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		<title><![CDATA[ Latin America Transactions, IEEE (Revista IEEE America Latina) - new TOC ]]></title>
		<link>http://null</link>
		<description>TOC Alert for Publication# 9907 </description>
		<year>2013</year>
		<month>May      </month>
		<day>20</day>
		<item>
			<title><![CDATA[IEEE Latin America Transactions Volume 11 Issue 1 February 2013]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502769]]></link>
			<description><![CDATA[This is the 1st special issue of the IEEE Latin America Transactions magazine of the year 2013. The special issues are published out of the four months that have regular issues. The regular issues are in March, June, September and December of each year.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502769]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>1</startPage>
			<endPage>11</endPage>
			<fileSize>1204</fileSize>
			<authors><![CDATA[Sechi Moretti Annoni Notare, Mirela;]]></authors>
		</item>
		<item>
			<title><![CDATA[6 DoF Simulation and 3D Modeling of a Nanosatellite]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502770]]></link>
			<description><![CDATA[This paper briefly describes a six degree of freedom simulator code characteristics and the nSat-IE satellite structural configuration, which fulfills two missions: data recovery and to be a technology development workbench. Besides this, this simulator will be used as a tool in order to obtain and study the results from the spacecraft orbit behavior. Two orbit simulation cases will be of paramount importance to check the code operation. It will be introduced as well a 3D satellite model (in development stage) witch take data from the simulator code in order to visualize the satellite when orbiting the earth. This 3D model is being developed using OpenGL and it will be coupled to the simulator code.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502770]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>12</startPage>
			<endPage>16</endPage>
			<fileSize>938</fileSize>
			<authors><![CDATA[Brito, Marcos;Rodriguez, Santiago;]]></authors>
		</item>
		<item>
			<title><![CDATA[A massive experience of computer equipment recycling]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502771]]></link>
			<description><![CDATA[The Waste Electrical and Electronic Equipment (WEEE) are an emerging fraction of municipal solid waste. This kind of waste has, among other pollutants, heavy metals like cadmium, lead and nickel, as well as mercury and brominated plastics and therefore require specific management for treatment. This paper presents the results obtained in the First Week of Computer Waste held in the month of April 2011 in relation to the amount of equipment received. This campaign was organized by the University and was the first experience massive collection of WEEE home computer in the province of Cordoba. The data collected were analyzed for the purpose of obtaining relevant information regarding the generation of this particular kind of waste in the province. It processed a total of 80 tons of computer equipment in which 20 tons were destined for use and recovery of materials remaining. In this context there is an opportunity to develop recycling processes transferable to local industry for both the resources from the recovery of materials such as jobs constitute an engine of economic renewal for the region.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502771]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>17</startPage>
			<endPage>20</endPage>
			<fileSize>525</fileSize>
			<authors><![CDATA[Reyna, Laura A.;Atea, Juan J.;Chesini, Ezequiel;Taborda, Ricardo A.M.;]]></authors>
		</item>
		<item>
			<title><![CDATA[A Practical Approach for Segmentation of Twigs on Samples of Yerba Mate by Digital Image Processing]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502772]]></link>
			<description><![CDATA[This paper discusses the implementation of the digital image processing techniques as a method for estimating the contents of twigs in samples of yerba mate. The hardware used in this paper, to obtain the analyzed images, consists of a desktop scanner and a personal computer. Then, using the designed and developed software for this purpose, the digital images obtained were processed and analyzed using a basic segmentation technique such as binarization with histogram thresholding. This paper compares two methods for estimating weight ratios from the binarized image. Preliminary experimental results using the proposed techniques, suggest that it may be estimated with an error less than 4% the percentage of twigs in a given batch of images. The speediness, simpleness and efficiency of the test, compared with current techniques, as well as, the reduced cost of the associated hardware, presents a viable, inexpensive and straightforward]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502772]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>21</startPage>
			<endPage>26</endPage>
			<fileSize>678</fileSize>
			<authors><![CDATA[Xiscatti Perez, Christian;Botteron, Fernando;]]></authors>
		</item>
		<item>
			<title><![CDATA[A Robust Model Predictive Control For Grid-Connected Voltage-Source Inverters]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502773]]></link>
			<description><![CDATA[Model predictive control is a new alternative in the control of power converters. The practical application of this controller demands a correct compensation of the computation delay. This compensation requires an estimation of the load current, usually attained in an open-loop manner, i. e. without error feedback of the model parameters. However, this strategy gives rise to diverse perturbations in the waveform, when there is a certain amount of parameter variation. In this work, the effects of this variation are analyzed and a way to reduce the distortion is proposed, using a Luenberger observer. This new approach is called Robust Model Predictive Control. The proposal is applied to a grid-connected voltage-source inverter. To validate the proposal, simulations are included in the paper.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502773]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>27</startPage>
			<endPage>33</endPage>
			<fileSize>731</fileSize>
			<authors><![CDATA[Judewicz, Marcos;Fischer, Jonatan;Herran, Mario;Gonzalez, Sergio;Carrica, Daniel;]]></authors>
		</item>
		<item>
			<title><![CDATA[Adjustable Tracking Algorithm with Adaptive Template Matching]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502774]]></link>
			<description><![CDATA[This paper presents an adjustable algorithm for object tracking in a sequence of images. It is a method designed to be effective in applications where some of the information on the object tracked is known. To establish the object position and size in a frame, adaptive template matching, location prediction through known trajectory, border information in the image, and data acquired in previous frames are used. This algorithm behaves nicely with sequences of images where the tracked object size and features vary considerably. It is also robust to some levels of occlusion, and it can be adapted to simpler applications to compete in speed with a basic correlation algorithm.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502774]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>34</startPage>
			<endPage>39</endPage>
			<fileSize>759</fileSize>
			<authors><![CDATA[Curetti, Maria;Garcia Bravo, Santiago;Arri, Gabriela S.;Mathe, Ladislao;]]></authors>
		</item>
		<item>
			<title><![CDATA[Alternative Admissible Biased Estimators]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502775]]></link>
			<description><![CDATA[In this work, a biased estimator obtained from an affine transformation of an unbiased estimator will be analyzed. In particular, the method proposed by Y. C. Eldar will be studied, and alternative approaches will be developed for the construction of biased estimators through transformations of unbiased ones. It is finally shown through simulations, that both estimators proposed in this work perform better than other estimators analyzed.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502775]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>40</startPage>
			<endPage>47</endPage>
			<fileSize>613</fileSize>
			<authors><![CDATA[Gama, Fernando;Casaglia, Daniel;Cernuschi Frias, Bruno;]]></authors>
		</item>
		<item>
			<title><![CDATA[An Experimental L1/L2 GNSS Receiver for High Precision Applications]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502776]]></link>
			<description><![CDATA[In this work we present the design and implementation of a GNSS receiver that can work with the civil signals of the L1 and L2 bands of GPS and GLONASS, and the E1 Open Service signal of Galileo. The developed prototype has two RF front-ends, one for the L1 band and another for the L2 band. The signals from each band are amplified and then down-converted to an intermediate frequency. The two local oscillator tones used for the mixing, and the clock signals for the next digitalization and processing stages are generated by a frequency synthesizer board, from a common reference. The digitalization and posterior processing of the signals can be carried out using generic devices, like an acquisition board and an FPGA, according to the Software Defined Radio (SDR) concept. In this way a programmable receiver is obtained. These kinds of receivers are versatile since they can be used for testing acquisition, tracking, and navigation algorithms for research and develop purposes. Commercial receivers do not have that capability, because their digital processing stages cannot be modified by the user. Moreover, a multi-band and multi-constellation receiver allows to greatly increase the performance in relation to mass market GNSS receivers which relay on only one navigation system and one carrier frequency. Measurements realized to the implemented prototype that validate the proposed design are presented.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502776]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>48</startPage>
			<endPage>53</endPage>
			<fileSize>985</fileSize>
			<authors><![CDATA[Lopez La Valle, Ramon;Garcia, Javier G.;Roncagliolo, Pedro A.;Muravchik, Carlos H.;]]></authors>
		</item>
		<item>
			<title><![CDATA[An Implementation of Reversible Watermarking for Still Images]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502777]]></link>
			<description><![CDATA[This paper presents a reversible data hiding algorithm. It provides good capacity by exploiting the correlation between neighboring pixels. Its application is appropriate in medical, cartographic and forensic images because it's possible to recover the original image and what's more the watermarked image is of very good quality so it can be used in some cases not very demanding. Its applications include authentication, integrity control, or inserting metadata]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502777]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>54</startPage>
			<endPage>59</endPage>
			<fileSize>1789</fileSize>
			<authors><![CDATA[Vargas, Laura;Vera, Elizabeth;]]></authors>
		</item>
		<item>
			<title><![CDATA[Analysis for the integration feasibility of OpenSPARC T1 and a Petri Nets processor to form a system with hardware synchronization capability]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502778]]></link>
			<description><![CDATA[OpenSPARC T1 is the open source version of the UltraSPARC T1 processor developed by Sun Microsystems. XiIinx development kit with a Virtex-5 gives the chance to test and change it. We analyzed the performance of the parts of OpenSPARC and Petri processor. We have considered several possibilities of adding a Petri processor to improve performance of processes that require synchronization]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502778]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>60</startPage>
			<endPage>64</endPage>
			<fileSize>496</fileSize>
			<authors><![CDATA[Nonino, Julian;Furey, Ignacio;Pisetta, Carlos R.;Micolini, Orlando;]]></authors>
		</item>
		<item>
			<title><![CDATA[Analysis, Simulation and Testing of RF Reception System of a RIR Type Radar]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502779]]></link>
			<description><![CDATA[This work presents the analysis of an RF (radio-frequency) receiver system which is part of a RIR (Range instrumentation Radar) type Radar. This radar has been unused for over 20 years, which is why a method to validate the correct performance of the reception chain and study modernization is required. The following consist of the simulation process created over LabVIEW systems with the objective of having a mathematical model of the receiver which is used to verify the correct functioning of the system. The results of the simulation are contrasted with testing performed over the system, obtaining very satisfactory results in the analysis of the antenna reception lobes and the process that measures the shifting in the RF axis.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502779]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>65</startPage>
			<endPage>70</endPage>
			<fileSize>799</fileSize>
			<authors><![CDATA[Anun, Matias;Menara, Agustin;Rodriguez Gonzalez, Santiago A.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Bulding of a Pain Threshold Measurement System]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502780]]></link>
			<description><![CDATA[Between March 2010 and November 2011 we have proceeded to build a device meant to quantify the pain threshold of a person through operator interaction,health professionals such as doctors, nurses, physiotherapists, and patient.This device is called pressure algometer, which determines the pressure at which a patient reaches his pain threshold by applying a known force on his body, and his feedback]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502780]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>71</startPage>
			<endPage>76</endPage>
			<fileSize>655</fileSize>
			<authors><![CDATA[Ceballos Barro, Nicolas;Paolasso, Lucas;Beltramone, Diego A.;Buonanotte, Federico;]]></authors>
		</item>
		<item>
			<title><![CDATA[Classification of Audible Signals by Characteristics of the Human Vocal Apparatus]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502781]]></link>
			<description><![CDATA[In this work, the performance of the Knn-algorithm for classifying different kinds of signals will be analyzed. In particular, the classification will be between two groups: voice and music signals. The distinctive features of speech signals will be exploited to separate them from musical ones. The classification will be based on mean and deviation of the amount of peaks from each spectogram line. In order to adapt the concept of line, thresholds have to be set. Finally, some improvements will be proposed, based on the obtention of other features and the setting of new thresholds for enhancement of performance.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502781]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>77</startPage>
			<endPage>80</endPage>
			<fileSize>776</fileSize>
			<authors><![CDATA[Llasat, Vanesa;]]></authors>
		</item>
		<item>
			<title><![CDATA[Comparative Analysis of Wavelet and EMD in the Filtering of Radar Signal Affected by Brown Noise]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502782]]></link>
			<description><![CDATA[In Electronic Warfare the goal of the attacker is interfering with communications of his adversary. A common type of attack is Jamming which corrupts the electronic devices signals by introducing intentionally different kinds of noise. In particular, in the context of radar systems, the attackers actions tend to avoid detection by the radar system. In this paper we carry out the signal processing of pulse radar in the presence of brown noise by two different digital filters: Discrete Wavelet Transform, DWT and Empiric Mode Decomposition, EMD. From the comparison between both results we obtain that EMD filtering is much more effective than DWT filtering for the situation described above.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502782]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>81</startPage>
			<endPage>85</endPage>
			<fileSize>681</fileSize>
			<authors><![CDATA[Grispino, Alberto S.;Petracca, Gabriel O.;Dominguez, Alfredo E.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Comparison of GIS Desktop Tools for Development of SIGPOT]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502783]]></link>
			<description><![CDATA[This paper wants to show a comparison of some GIS Desktop tools, bearing in mind the parameters of evaluation established on the ISO/IEC 9126-3 norm. The comparison was made by the Grupo de Investigacion en el Manejo de la Informacion GIMI within the project Sistema de Informaci??n Geogr??fico para Planes de Ordenamiento Territorial Municipal, to choose the best tool for the development of a suite guided to manage the Land Use Planning.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502783]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>86</startPage>
			<endPage>90</endPage>
			<fileSize>487</fileSize>
			<authors><![CDATA[Gonzalez, Juan S.;Caceres Castellanos, Gustavo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Cram??r-Rao Bound for Parameter Estimation in Sensor Arrays with Mutual Coupling]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502784]]></link>
			<description><![CDATA[The mutual coupling effect in a sensor array must be taken into account, since it degrades significantly the performance of the well-known signal direction finding algorithms. In this work, we derived the Cram??r-Rao bound on the estimation of the mutual coupling coefficients and of the signal direction of arrival, when the signal covariance matrix and the noise variance are unknown. The Cram??r-Rao bound plays an important role in estimation problems, since it allow us to study the performance of estimation methods under certain conditions. We use the calculated bounds to evaluate the performance of an estimation method of the mentioned parameters. This approach uses the multiple signal classification algorithm on an enlarged sensor array with auxiliary elements, whose number depends on the number of mutual coupling coefficients.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502784]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>91</startPage>
			<endPage>96</endPage>
			<fileSize>455</fileSize>
			<authors><![CDATA[Pascual, Juan Pablo;von Ellenrieder, Nicolas;Muravchik, Carlos;]]></authors>
		</item>
		<item>
			<title><![CDATA[Cytotoxicity of hydroxyapatite and morphology in composites with Ti]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502785]]></link>
			<description><![CDATA[Hydroxyapatite (Ca10(PO4)6(OH)2 is the material used to improve osseointegration of implants in humans. Traditionally Ti-based implant is coated with hydroxyapatite, but this presents several problems such as, low fracture toughness of hydroxyapatite, generation of interfacial cracks during the deposition step and low adhesion ceramic /metal. Furthermore some studies reported that some excellent Ti??HA bio-composites could be fabricated by the powder metallurgy (PM) technology. In present study it was investigate the cytotoxicity of coralline and bovine hydroxyapatite. Topography of Ti-HA composites obtained by powder metallurgy was evaluated by scanning electron microscopy. The results showed that HA samples analyzed did not affect cell viability. Furthermore, a good integration of HA to the matrix of Ti was observed by microscopy studies]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502785]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>97</startPage>
			<endPage>100</endPage>
			<fileSize>1311</fileSize>
			<authors><![CDATA[Comin, Romina;Reyna, Laura A.;Cid, Mariana P.;Oldani, Carlos R.;Salvatierra, Nancy A.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design and evaluation of pressure and electrocardiographic modules embedded in a Cardiac Hemodynamic Monitor]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502786]]></link>
			<description><![CDATA[This work presents the design and the implementation of a two-channels recording system and its adaptation to a FPGA-based acquisition system. The recorded signals are Electrocardiogram (ECG) and Intraventricular Pressure (IVP). Elements and circuits needed to incorporate the newly developed recording system to a previously developed FPGA-based Conductance Catheter System SCC are also presented. The result is a fully integrated system, in which the evaluation of each channel is carried out. ECG amplifier is evaluated by means of frequency response and common mode rejection ratio. Filter frequency response and two calibration methods, over 0-150 mmHg and 150-300 mmHg ranges, are used to evaluate PIV channel. Finally analogical to digital conversion and communication between two-channels recording system and FPGA-based acquisition system are tested. Satisfactory results are obtained.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502786]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>101</startPage>
			<endPage>107</endPage>
			<fileSize>914</fileSize>
			<authors><![CDATA[Cordoba, Luis Pedro;Gomez Lopez, Maria de los Angeles;Goy, Carla Belen;Herrera, Myriam C.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design and Implementation of a MPPT circuit for a Solar UAV]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502787]]></link>
			<description><![CDATA[This paper presents a maximum power point tracking (MPPT) circuit for an Unmanned Air Vehicle. The design of the MPPT is proposed utilizing a boost-converter topology. The power of the photovoltaic cells is monitored by a closed-loop microcontroller based control system, and the PWM signal of the boost converter continuously adjusted to extract maximum power. The MPPT is used to charge the Lithium-ion Polymer battery and feed the electrical load of the unmanned aircraft.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502787]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>108</startPage>
			<endPage>111</endPage>
			<fileSize>813</fileSize>
			<authors><![CDATA[Murdoch, Sebastian;Reynoso, Santiago;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design and Implementation of a Three-Phase DC-AC Converter for Microgrids Based on Renewable Energy Sources]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502788]]></link>
			<description><![CDATA[This paper proposes a three phase DC AC converter for autonomous microgrids based on renewable energy sources. The microgrid topology offer simple control characteristics, where the AC link does not need a complex voltage controller strategy. The DC AC converter (three phase inverter) generates output voltages with very low THD for any type of load. To obtain the before mentioned characteristics for the inverter, this work propose an internal model principle based controller structure in synchronous dq frame, with a reduced sampling and number of poles. With this structure, is possible to considerably improve the stability and dynamic system response, and mainly, the saturation of the low frequency insulating transformer is avoided. Also in this paper, is proposed a straightforward design methodology for the discrete internal model based controller. In order to validate the proposed digital controller structure, the design methodology and to demonstrate the steady state and transient performance, experimental results are presented from a 15kVA SVPWM modulated three-phase inverter, fully controlled by a DSC dsPIC30F4011.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502788]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>112</startPage>
			<endPage>118</endPage>
			<fileSize>617</fileSize>
			<authors><![CDATA[Carballo, Roberto;Nunez, Ruben;Kurtz, Victor H.;Botteron, Fernando;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design of a Current Measurement System in a Plasma Thruster with Rogowski Coil]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502789]]></link>
			<description><![CDATA[The development of plasma thrusters for microsatellites is mostly based in intensive testing, so the implementation of measurement devices for characterizing their real response is required. One of the most significant parameters is the current flowing through the plasma at the time of ignition; its quantification requires an instrument capable of measuring current peaks between -14 kA and +10 kA, without interrupting the circuit that produces it. That's why a Rogowski coil has been chosen as the ideal measurement method. When the coil is mounted around the conductor carrying the current to be measured, it produces a voltage proportional to its derivate. Using an operational amplifier, adapted to the discharge current frequency of the plasma generating circuit, an active integration of the Rogowski coil output signal is performed. The work begins by defining the Rogowski Coil characteristic parameters and the integrator circuit which converts its output to a signal proportional to the measured current. Subsequently, the related hardware is implemented and functional tests are performed.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502789]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>119</startPage>
			<endPage>125</endPage>
			<fileSize>777</fileSize>
			<authors><![CDATA[De Alessandro, Roque O.;Velez Ibarra, Maria D.;Brito, Hector H.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design of a Portable System for Continuous Recording of Arterial Parameters during 24h]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502790]]></link>
			<description><![CDATA[The simultaneous measurement of pressure and diameter in a central artery during 24 hours could bring new information about the variability of the arterial mechanical properties. In order to perform these measurements in an animal, it is essential to count with a device that could acquire the signals from the sensors with a proper preconditioning circuit and then transfer them wirelessly to be stored and processed remotely. In this paper we present the prototype of a new portable and autonomous device, capable of being hosted on the animal's back. Preliminary results obtained from a pilot experience in a sheep using the prototype are detailed and limitations are discussed.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502790]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>126</startPage>
			<endPage>129</endPage>
			<fileSize>890</fileSize>
			<authors><![CDATA[Bortolin, Lucas;Craiem, Damian;Gorgolino, Jorge;Santoriello, Gerardo;Lutenberg, Ariel;Graf, Sebastian;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design Study for a Cellular Culture Bioreactor Coupled with a Magnetic Stimulation System]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502791]]></link>
			<description><![CDATA[This article presents a design study performed to integrate a cellular culture bioreactor along with an external magnetic stimulation system, aimed at creating ideal environmental conditions that allow for cellular culture and cellular tissue growth to take place in three dimensions, under a sterile environment favorable for the development of bioorganic grafts which have been exposed to controlled electromagnetic fields. The different systems that have been designed and constructed are described along with their particular characteristics and all general considerations that were taken into account during the design process are presented, as well as the main variables that must be considered during implementation in order to guarantee constant and adequate function of the integrated systems, as well as reproducible results.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502791]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>130</startPage>
			<endPage>136</endPage>
			<fileSize>976</fileSize>
			<authors><![CDATA[Restrepo, Andres F.;Martinez, Luis J.;Pinedo, Carlos R.;Franco, Edinson;Cadavid, Hector;]]></authors>
		</item>
		<item>
			<title><![CDATA[Design, implementation and evaluation of a FPGA embedded digital systems course at the university level]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502792]]></link>
			<description><![CDATA[This work describes the first teaching experience of FPGA-based embedded digital systems at Facultad de Ciencias Exactas e Ingenier??a, Universidad Nacional de Tucum??n, Argentina. The course contents, modality and ways to assess student learning are detailed, also results obtained from student assessment and from course evaluation are presented. Hardware description languages are strategically taught to student with basic knowledge of digital systems. The course is oriented to electronics engineering advanced students and professionals from exact sciences' area. Course contents include VHDL language learning, practical work realization, and FPGA-based system design as a final evaluation. The course evaluation is performed by means of quantitative results obtained from student assessment- considering realized practical work and FPGA-based system design- and from an inquest answered by the learning group.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502792]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>137</startPage>
			<endPage>142</endPage>
			<fileSize>577</fileSize>
			<authors><![CDATA[Gomez Lopez, Maria de los Angeles;Goy, Carla B.;Herrera, Myriam C.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Detection of Human-Robot Collision using Kinetic]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502793]]></link>
			<description><![CDATA[In this work, a system capable of detecting human-robot potential collisions is presented. It is intended to assist a robotic arm on its movement around the working area. By detecting risk zones, it prevents the robot from interfering with the surgeons work. To accomplish this, it is necessary to place both the robot and the surgeon on a coordinate system. The tracking of the robot is achieved by detecting color labels that were placed on the robot's joints. On the other hand, the physician's position is obtained using Kinect's depth stream. The output of the system will be used by the robot to define risk zones and to avoid them by modifying its trajectory.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502793]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>143</startPage>
			<endPage>148</endPage>
			<fileSize>784</fileSize>
			<authors><![CDATA[Mathe, Ladislao;Caverzasi, Agustin;Saravia, Fernando;Gomez, Gabriel;Pedroni, Juan;]]></authors>
		</item>
		<item>
			<title><![CDATA[Development of a leakage current meter using differential method]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502794]]></link>
			<description><![CDATA[Although electrical medical equipments meet rigorous standards that ensure the safety and essential performance of the device, its needed to verify their status throughout serviceable lifespan. One of the parameters to check is the leakage current. The present work describes the development of an instrument for measuring total leakage current by differential method intended to verify the safety requirements established by international standard IEC62353.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502794]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>149</startPage>
			<endPage>154</endPage>
			<fileSize>548</fileSize>
			<authors><![CDATA[Rodriguez Aguada, Sebastian;Rodriguez, Conrado J.;Bruni, Rodrigo G.;Vanella, Oscar R.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Development of a Liquid Flow Meter for Aerospace Instrumentation]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502795]]></link>
			<description><![CDATA[This paper deals with the analysis, design, manu-facturing, testing and evaluation a turbine flow meter to measure liquid propellant flow in launching rockets. Axial turbine flow-meters exhibit superior performance when used with low kinematic viscosity fluids. Under subsonic turbulent flow conditions these instruments show a highly linear behavior with very good repeatability without any additional compensation (neither hardware nor software) and they also exhibit a low pressure drop at maximum liquid flow. A 10 liter/s @ 1 bar pressure drop flow-meter designed to be used with MMH and NTO liquid propellants is exposed. Starting from the turbine's motion equations, the relative incidence of active and parasitic torques is analyzed, both in stationary and transient flow conditions. The dependence of the instrument's proportionality factor (K-factor: pulses per liter) related to the properties of the flowing fluid and turbine dynamics is evaluated in both aforesaid situations. The instrument has been assembled and successfully tested. The paper includes some abridged benchmark results.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502795]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>155</startPage>
			<endPage>161</endPage>
			<fileSize>783</fileSize>
			<authors><![CDATA[Jazni, Jorge;Cova, Walter;Salomone, Javier E.;Gonzalez, Gustavo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Development of a Low-cost Upper-limb Myoelectrical Prosthestis and its Open Source Training System]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502796]]></link>
			<description><![CDATA[Bioelectrical signals are used more frequently in order to provide an alternative way to command devices, such as myoelectrical signals or electroencephalic signals ??the last ones used in Brain-Computer Interface applications-. The goal of this paper is using myoelectrical signals to command a robotic upperlimb prosthesis developed as well. The only requirement to be able to use the prosthesis would be to have a voluntary and accurate muscle control. In that way, a training system for prosthesis' future users has been developed in order to train their muscle control.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502796]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>162</startPage>
			<endPage>167</endPage>
			<fileSize>669</fileSize>
			<authors><![CDATA[Diaz Nocera, Aden;Beltramone, Diego A.;]]></authors>
		</item>
		<item>
			<title><![CDATA[DICOM RIS/PACS Telemedicine Network Implementation using Free Open Source Software]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502797]]></link>
			<description><![CDATA[The increasing incorporation of modern medical imaging equipment requires the operation of systems that store, transmit and display images, PACS (Picture Archiving and Communication System) via digital networks to provide health services with higher quality. These revolutionized radiology systems based on digital techniques, communications, visualization and information technologies. One of the major problems that arise in institutions working with Imaging Diagnosis (Dx) in the interconnection network or equipment, are the "bottlenecks" caused by the high flow of network data. This flux is given by the transfer of images in DICOM (Digital Imaging and Communications in Medicine) to the various devices that make up a DICOM network, called Service Class Users (SCU) and Service Class Providers (SCP). This paper describes the development and implementation of a network of medical images using free software and its compatibility with its own data network of a RIS (Radiology Information System). Describes techniques used for the interconnection of local nodes on a LAN (Local Area Network) remote WAN Wide Area Network) via Internet and WLAN (Wireless Area Network.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502797]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>168</startPage>
			<endPage>171</endPage>
			<fileSize>399</fileSize>
			<authors><![CDATA[Alvarez, Luis R.;Vargas Solis, Roberto;]]></authors>
		</item>
		<item>
			<title><![CDATA[Digital Processing of Fractographic Images for Welded Joints on Microalloy Steel API5L-X52 Aged]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502798]]></link>
			<description><![CDATA[Digital processing on fractographic images of fracture surfaces was performed, for the weld metal aged at 250 ; C for 500 and 900 hours. The digital analysis on fractographs was carried out using mathematical morphology and morphological transformation in order to gain specific structures of the images. The results showed that the mechanism of growth and coalescence of microcavities can be observed during the fractographic image segmentation.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502798]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>172</startPage>
			<endPage>176</endPage>
			<fileSize>641</fileSize>
			<authors><![CDATA[Mendoza, Oscar;Vargas, Benjamin;Mendoza, Juan;]]></authors>
		</item>
		<item>
			<title><![CDATA[Distributed System for Telemetrization of Limnimetric Stations]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502799]]></link>
			<description><![CDATA[A limnimetric station allows to measure the level of surface water from rivers and from this estimate their flow; providing useful analysis elements for the draw on and management of the water resources. Telemetered water level gauges were implemented, using a cell phone, allowing data acquisition and handling, which are relayed to a Server application via GSM / GPRS. The application Server redirects warnings notifications of extreme events from the remote system. It has a Management System Database. Finally, a Client application allows to manage the stored information.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502799]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>177</startPage>
			<endPage>182</endPage>
			<fileSize>811</fileSize>
			<authors><![CDATA[Micolini, Orlando;Alasia, Melisa A.;Martinez, Pablo;Pereyra, Martin;]]></authors>
		</item>
		<item>
			<title><![CDATA[Dynamics of Micro-Air-Vehicles with Flapping Wings: A Multibody System Approach]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502800]]></link>
			<description><![CDATA[This paper presents the development of a dynamic model to study the flight mechanics of a micro-air-vehicle with flapping wings. This model is based on Lagrange's equations for constrained systems. The micro-air-vehicle is modeled as a collection of three rigid bodies a central body and two wings. The wings have prescribed motions relative to the central body, i.e., they are kinematically driven. The numerical integration of all the governing equations, which are differential-algebraic, is performed simultaneously and interactively in the time domain. The integration scheme couples a 4th-order predictor-corrector method, the modified method of Hamming, with a procedure to stabilize the resulting differential-algebraic equations.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502800]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>183</startPage>
			<endPage>189</endPage>
			<fileSize>984</fileSize>
			<authors><![CDATA[Antonio, Bruno;Guillermo, Cristian;]]></authors>
		</item>
		<item>
			<title><![CDATA[Embedded System for the Command of a High-Gain Antenna Pedestal with GPS Coordinates]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502801]]></link>
			<description><![CDATA[This paper develops and implements an embedded system for the command of a high-gain antenna pedestal. It is based on the use of GPS parameters transmitted by an aerospace vehicle via an RF link. These directional antennas allow to optimize the reception of high frequency radio link, increasing the scope and reducing the weight requirements of the onboard batteries. Equations are implemented by the system to transform GPS coordinates in pedestal commands.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502801]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>190</startPage>
			<endPage>195</endPage>
			<fileSize>1002</fileSize>
			<authors><![CDATA[Alem, Leandro;Passini, Hugo;Minutta, Ruben;]]></authors>
		</item>
		<item>
			<title><![CDATA[Evaluation of Impedance Spectroscopy as a Transduction Method for Bacterial Biosensors]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502802]]></link>
			<description><![CDATA[Biosensors are simple, feasible and cost-effective devices where biological specificity and selectivity, and electronic miniaturization are combined. Degrading microorganisms, such as the M7 species of Streptomyces genus, can specifically be used as biorecognition element, for lindane detection and quantification. Furthermore, electrochemical impedance spectroscopy is a non-destructive technique that allows evaluating bacterial activity by measuring conductivity changes in a culture&#61472; medium. In this work, instrumental conditions were optimized to apply this method as transduction principle in bacterial biosensors. By means of electrochemical impedance spectroscopy, concentrations of chloride ions close to the environmental lindane values were measured. This is a suitable, simple and economical technique for use as a transduction method in biorecognition devices for organochlorine pesticides detection, particularly lindane.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502802]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>196</startPage>
			<endPage>200</endPage>
			<fileSize>550</fileSize>
			<authors><![CDATA[Lopez Rodriguez, Maria L.;Madrid, Rossana;Giacomelli, Carla;]]></authors>
		</item>
		<item>
			<title><![CDATA[Evaluation of Stretcher Alignment in Radiotherapy using Computed Tomography]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502803]]></link>
			<description><![CDATA[Currently, a wider and more frequent use of Computed Tomography (CT) volumes are used for planning the radiotherapy treatment of oncological patients. These image volumes are instrumental in positioning the patient and the precise incidence of radiation fields. Any error in such a process will adversely affect the result of the treatment and, consequently, the health of the patient. Therefore, quality control is mandatory throughout this process. As regards image acquisition, the controls are typically executed manually, implying a tedious repetitive task. This problem spurred the need to develop an algorithm that allows eliminating this issue while it evaluates and corrects the main concern as well. Particularly, an algorithm for automatic control of the entire positioning process is proposed here which prevents errors from deviation on both the longitudinal and transversal axes of the arrangement. The alignment will vary according to the anatomical part to be treated and the type of stretcher support, among other aspects. The application was developed by resorting to free software tools (GLP) and the libraries for processing, segmenting and recording of medical images (ITK). The algorithm detects these deviations on both axes by applying threshold methods, morphologic operations and Hough's Transform. This algorithm is currently operative in the Medical Image Processing Server of the Nuclear Medicine School Foundation (FUESMEN) of Mendoza, Argentina.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502803]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>201</startPage>
			<endPage>206</endPage>
			<fileSize>606</fileSize>
			<authors><![CDATA[Velasques, Marcelo F;Graffigna, Juan Pablo;Aguero, Hector;Holeywell, Pablo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Frequency and Total Harmonic Distortion Estimation Based on Adaptive Filters]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502804]]></link>
			<description><![CDATA[In this paper, a low computacional cost total harmonic distortion and frecuency estimation method is proposed. This method is based on adaptive digital filters allowing tracking the fundamental frequency variations. Real time experimental results obtained using a fixed point digital signal processor development kit are presented. They show an acceptable performance and have a robust behavior to signal distortions such as frequency fluctuations, high harmonic content, subharmonic and interharmonics.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502804]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>207</startPage>
			<endPage>212</endPage>
			<fileSize>850</fileSize>
			<authors><![CDATA[Moya, Sergio E.;Vilar, Javier N.J.;Korpys, Ricardo A.;Kolodziej, Javier E.;]]></authors>
		</item>
		<item>
			<title><![CDATA[FxLMS and MFxLMS Stability Constrains when used in Active Noise Control]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502805]]></link>
			<description><![CDATA[This paper presents a comparison of the stability of the MFxLMS and FxLMS algorithms, applied to the low frequency narrowband Active Noise Control (ANC). This work focuses on the study of the secondary path in a headset, and the effect of its variations in the system's stability. The analysis is completed with simulations that support the conclusions.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502805]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>213</startPage>
			<endPage>217</endPage>
			<fileSize>956</fileSize>
			<authors><![CDATA[Gonzalez, Fernando;Rossi, Roberto;Molina, German R.;Parlanti, Gustavo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Heterogeneous Multi-Core System, synchronized by a Petri Processor on FPGA]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502806]]></link>
			<description><![CDATA[This report describes the development of a hardware mechanism to improve synchronization in a multicore architecture, using Petri's formalisms. A module that interfaces with two Microblaze processors is developed. Then it is implemented in a FPGA, thus constituting an heterogeneous multicore system with synchronization capability by hardware.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502806]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>218</startPage>
			<endPage>223</endPage>
			<fileSize>639</fileSize>
			<authors><![CDATA[Micolini, Orlando;Pereyra, Martin;Gallia, Nicolas;Alassia, Melisa;]]></authors>
		</item>
		<item>
			<title><![CDATA[Implementation of a Noise Reduction Algorithm in a Hearing Aid Device Based on a dsPIC]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502807]]></link>
			<description><![CDATA[Nowadays there are many people affected by hearing impairments. The cost of assistive listening devices leaves out of reach for many people a technological solution. In the search of an economical alternative, low-cost DSPs arises as a good choice. However, it could be difficult to decide which has the best cost - effectiveness trade off among all devices offered in the market. The main goal of this work, then, is to determine the memory requirements of three noise reduction methods. It is done in order to select the algorithm that uses fewer resources, which will be implemented on a hearing aid device based on a low-cost DSP. This assistive listening device through digital signal processing techniques can get the basic features of a high-end assistive listening device. Objective experiments are performed to analyze the performance of the implemented system..]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502807]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>224</startPage>
			<endPage>229</endPage>
			<fileSize>531</fileSize>
			<authors><![CDATA[Uriz, Alejandro J.;Aguero, Pablo D.;Castineira Moreira, Jorge;Tulli, Juan C.;Gonzalez, Esteban L.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Lyapunov Exponent Analysis Applied to a Hyperchaotic Prey-predator Model]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502808]]></link>
			<description><![CDATA[A stability analysis of strange and simple attractors of a prey-predator map is performed. An evolution of the species along generations is computed with the purpose of contrasting with more sophisticated measures of complexity theory. It can be noticed that graphs of iterations alert on the presence of complex dynamics in certain regions of the parameter space. The computation of the Lyapunov characteristic exponents (LCE) shows regions of hyperchaos, an unusual fact in 2-dimensional maps that could be useful in signal encoding for secure communication.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502808]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>230</startPage>
			<endPage>235</endPage>
			<fileSize>1151</fileSize>
			<authors><![CDATA[Abrego, Francisco J.;Moiola, Jorge L.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Measurement Module S parameters for vector network analyzer]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502809]]></link>
			<description><![CDATA[The most frequently used to characterize RF devices is the Vector Network Analyzer (VNA). A VNA is constituted by a RF generator, measurement modules and multiple receivers. This work focuses on the implementation of the module S-parameter measurement, for cellular mobile bands from 0.8 to 2 GHz addition to complying with the characteristics of a VNA this module with the generator is an instrument independently for use in laboratory measurements, calibration and production lines in the electronics industry. We designed and implemented the distribution system of the signal, Directional Couplers, Radio Frequency Switching for Keys, Programmable Attenuators steps and a control system based on Micro controller.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502809]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>236</startPage>
			<endPage>241</endPage>
			<fileSize>1081</fileSize>
			<authors><![CDATA[Bianco, Fernando L.;Naldini, German;Amado, Jose;Chiale, Santiago;Gonzalez, Felipe;]]></authors>
		</item>
		<item>
			<title><![CDATA[Mitigation Of Scattering Polarization In F.O. Regarding The Method Of Installation]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502810]]></link>
			<description><![CDATA[Today there are value added services such as ADSL, or the use of technologies such as GSM, which cause the transfer of large volumes of information on their transport networks. In turn, these networks are formed by optical fiber links, which are limited by several factors such as PMD. This phenomenon of light reduces the efficiency of transmission systems and the bandwidth. It has been found that the PMD can be seriously affected during transport and installation. This paper to compare the different installation techniques based on the value of PMD associated with the use of them. The results show that the use of an appropriate method of installation as the installation of fiber optic in tritubo by blow, would mitigate the PMD value associated with the link respect other installation methods, and demonstrate the importance of reducing efforts lateral traction and torsion of the installation process in the optical fiber during installation.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502810]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>242</startPage>
			<endPage>245</endPage>
			<fileSize>567</fileSize>
			<authors><![CDATA[Peretti, Gaston C.;Depetris, Leonardo;Alegre, Leandro;Vignolo, Agustin;]]></authors>
		</item>
		<item>
			<title><![CDATA[Myoelectric Signal Processing Using Time-Frequency Distribution]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502811]]></link>
			<description><![CDATA[This paper presents the use of digital signal processing methods in time-frequency, for analysis and classification of human myoelectric signals, sensed by surface electrodes. The simultaneous analysis in both planes, time and frequency, permits to extract information for obtaining statistical patterns associated with a particular muscle activity. The methodology employed is the use of the Wigner-Ville transform on digitally acquired signals of electrical activity of brachioradialis muscle sets and carpal flexor. For the analysis and classification was developed dedicated software in Matlab. In terms of hardware development, this is based on bioinstrumentation amplifiers with analognoise cancellation, and microcontrollers DSPIC with digital filtering. The results obtained, in respect to the extraction of statistical standards, allow us to deliver classified information in the form of tables and graphs on the electrical activity of muscle bundles. These results can also be used in systems man-machine interface for control of mechanisms or human prosthesis, as in the experimental trials in a electromechanical claw as described later. The sampled data set was obtained from individuals with no apparent problem in muscle function, but it is hoped that its use in individuals with specific muscular problems, is of most interest to medical specialists in the field. It is concluded that the use of this methodology is appropriate and satisfactory in the analysis and classification of myoelectric signals for diagnostic purposes or for applications in electromechanical prosthetic systems.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502811]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>246</startPage>
			<endPage>250</endPage>
			<fileSize>822</fileSize>
			<authors><![CDATA[Perez, Jorge;Ferrao, Hilda N.;Juarez, G.E.;]]></authors>
		</item>
		<item>
			<title><![CDATA[New Magnet Design for Fast-Field-Cycling Nuclear Magnetic Resonance]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502812]]></link>
			<description><![CDATA[A new magnet design for fast-field-cycling nuclear magnetic resonance is described. A topic of interest is the compensation of the magnetic field homogeneity during the generation of the pulsed magnetic field. In contrast with previous solutions, the magnet system here discussed can be electronically controlled. In Kelvin-type magnets used today, the homogeneity of the field is set-up through a current density distribution along the air-cored cylinders that compose the magnet coil. A common feature of this type of magnets is that the magnetic field value and its homogeneity are affected by thermo-mechanical stress during the strong current pulses applied to the coil. In the new design here presented, the problem can be circumvented through a multicoil arrangement driven by individual current sources, allowing an automatic correction of the magnetic field drift and the homogeneity.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502812]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>251</startPage>
			<endPage>256</endPage>
			<fileSize>743</fileSize>
			<authors><![CDATA[Kruber, Stephan;Farrher, German;Anoardo, Esteban;]]></authors>
		</item>
		<item>
			<title><![CDATA[NMR-SSC Magnetic Field Profiler Applied to Magnetic Field Shimming]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502813]]></link>
			<description><![CDATA[A new methodology aimed to control the spatial dependence of a magnetic field within a volume of interest is described. The designed hardware uses Nuclear Magnetic Resonance (NMR) to sense the magnetic field. A modified version of the Statistical Signal Characterization (SSC) method was used to analyze the NMR signal, providing a dynamical definition of the characterization parameters. The information is used to control the currents driving a set of coils that introduce corrections in the spatial dependence of the main field generated by an independent unit (magnet or electromagnet). As a practical matter, we deal with the particular case of magnetic field shimming.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502813]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>257</startPage>
			<endPage>262</endPage>
			<fileSize>702</fileSize>
			<authors><![CDATA[Segnorile, Hector;Forte, Guillermo;Farrher, German;Anoardo, Esteban;]]></authors>
		</item>
		<item>
			<title><![CDATA[Non-Invasive Vein Detection Method using Infrared Light]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502814]]></link>
			<description><![CDATA[This research aims at studying the feasibility to use Near Infrared Light (NIR) as a method to detect veins in a non-invasive procedure. The research is based on the construction of an artificial vision system which captures an image through a CMOS optical sensor to outline and see the venous network mesh. The acquired image is then processed and optimized using Matlab software to emphasize areas of interest and to eliminate unnecessary information. The project also includes a stage in which the image obtained is projected over the patients' skin, obtaining an artificial visualization of the venous network. The results set the bases for future research and potential applications in the field of health.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502814]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>263</startPage>
			<endPage>267</endPage>
			<fileSize>632</fileSize>
			<authors><![CDATA[Marcotti, Aida;Hidalgo, Maria Belen;Mathe, Ladislao;]]></authors>
		</item>
		<item>
			<title><![CDATA[Numerical Analysis of Si and GaAs Solar Cells Exposed to Space Radiation]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502815]]></link>
			<description><![CDATA[In this paper, we present a study about Si and GaAs space solar cells by means of numerical simulations. We have investigated the variations of the short-circuit current, open circuit voltage and maximum power point, before and after the devices were irradiated with 10 MeV protons and fluences between 109 and 1013 p+/cm2. The simulation results allow to obtain the optimum solar cell with specific requirements for space applications.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502815]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>268</startPage>
			<endPage>273</endPage>
			<fileSize>1366</fileSize>
			<authors><![CDATA[Cappelletti, Marcelo A.;Casas, Guillermo A.;Cedola, Ariel P.;Peltzer y Blanca, Eitel L.;]]></authors>
		</item>
		<item>
			<title><![CDATA[OpenCL Overview, Implementation, and Performance Comparison]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502816]]></link>
			<description><![CDATA[High performance parallel computing was something exclusive for expensive specialized hardware some years ago. But now we can find powerful parallel processors in many home graphics card whose interface has been recently opened by many manufacturers for general purpose computing. OpenCL, created by the world most important processors manufacturers, went a little further, aiming for a platform and manufacturer independent parallel language. However, understanding this new processing paradigm is challenging and critical for future computation demanding applications. The first approach of this document is to provide a deep technical background of OpenCL architecture. Second, we propose an implementation of a matrix product calculation OpenCL kernel directly implemented in C++ without wrappers so as to describe in detail the OpenCL programming flow. Thirdly, different platforms and algebraic scenarios are created for this program concluding that the improvement of calculation performance can reach up to 3 orders of magnitude over the same algorithm in plain C++.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502816]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>274</startPage>
			<endPage>280</endPage>
			<fileSize>767</fileSize>
			<authors><![CDATA[Fraire, Juan A.;Ferreyra, Alejandro;Marques, Carlos;]]></authors>
		</item>
		<item>
			<title><![CDATA[Optimization and Evaluation of an Arterial Thrombus Retrieval Device]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502817]]></link>
			<description><![CDATA[The aim of this work was the optimization of an arterial clot retrieval device made of Ni-Ti in the shape of a helical spring. Wire was obteined from GAC International Inc., a company dedicated to the development of products vinculated to orthodontic and orthopedic, and then employed for its development. Finite Element (FE) simulation was used to compare the effects in the clot when different shapes of springs, cylindrical and conical, are used. Abaqus 6.9 was the software chosen to develop those simulations. The assessment of the device using an in vivo model was attempted; an experimental protocol was developed, using the abdominal aorta of the rat for effective in vivo testing of the endovascular catheter-delivered device. Taking into account the results obtained with the FE analysis it was concluded that the utilization of conical shaped springs is better than cilindrical due to the lower stress caused in the clot in this case, that avoids its rupture. The in vivo intervention was succesfull, the generation of the clot in the aorthic artery of a rat was achieved and so was the extraction of it.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502817]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>281</startPage>
			<endPage>286</endPage>
			<fileSize>987</fileSize>
			<authors><![CDATA[Pollano, Antonella;Suarez, Marta;Rivarola, Angelica;Dominguez, Alejandro;]]></authors>
		</item>
		<item>
			<title><![CDATA[Orientation Control with Velocity Feedback Loop for an Aerospatial Gimbal Nozzle Implemented in a Hardware-in-the-loop Simulation Environment]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502818]]></link>
			<description><![CDATA[This article presents the implementation of a real-time simulator of a position controller with velocity feedback to control the orientation of a gymbal noozle used in liquid fueled launch vehicles. The plant's mathematical model is comented, and Lyapunov's second method is used to verify system's closed loop stability. The implementation of the hardware-in-the-loop simulation model is also presented]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502818]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>287</startPage>
			<endPage>292</endPage>
			<fileSize>619</fileSize>
			<authors><![CDATA[Pedroni, Juan P.;Cova, Walter;]]></authors>
		</item>
		<item>
			<title><![CDATA[Passivity Based Control of a Three-Phase Front End Converter]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502819]]></link>
			<description><![CDATA[A passivity-based nonlinear controller for a three-phase front end converter used for connection of renewable energy sources to the grid is presented in this paper. The control objectives are to inject all the generated power into the grid and control the reactive power exchanged with the power system. The system is represented by its port-controlled Hamiltonian model and the controller is designed by interconnection and damping assignment. The design of the controller allows a direct control of the DC link dynamics and avoids the use of derivatives in the implementation of the control equations. The performance of the proposed control strategy is validated through simulations.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502819]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>293</startPage>
			<endPage>299</endPage>
			<fileSize>997</fileSize>
			<authors><![CDATA[Serra, Federico;De Angelo, Cristian;Forchetti, Daniel;]]></authors>
		</item>
		<item>
			<title><![CDATA[Processing of ambient vibration records for the estimation of the fundamental vibration period of soil deposits]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502820]]></link>
			<description><![CDATA[It is presented the processing of ambient vibration records, using a technique proposed by Nakamura in 1989, for the estimation of the fundamental horizontal vibration period of soil deposits. This technique of noninvasive nature allows us, by recording a few minutes of ambient noise, to characterize the dynamic behavior of the soil. A module for the elimination of transients recorded during the measurement was added to the program written to perform the processing of the data in order to preserve the stationary parts of the records. The aim of the fundamental horizontal vibration period estimation is to evaluate local site effects and thus anticipate the damage caused by earthquakes. As a case of study it is presented a seismic micro-zonation work for the city of Mayaguez in Puerto Rico, whose result is an isoperiod soil map for that city.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502820]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>300</startPage>
			<endPage>306</endPage>
			<fileSize>1602</fileSize>
			<authors><![CDATA[Ritta, Raul J.;Massa, Julio C.;Chiappero, Guillermo D.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Recommendations for triboelectricity control in hospital environment]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502821]]></link>
			<description><![CDATA[This paper discuss associated problems with generation of triboelectric charges in the hospital environment, intrinsic damage happening and methods to mitigate associated risks derivate to this phenomenon]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502821]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>307</startPage>
			<endPage>313</endPage>
			<fileSize>564</fileSize>
			<authors><![CDATA[Wain, Gustavo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Remote Monitoring System of ECG and Human Body Temperature Signals]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502822]]></link>
			<description><![CDATA[The paper presents a remote monitoring system for electrocardiographic and temperature signals. The system consists of a hardware module for acquisition, a Bluetooth transmission module and finally a displaying module (PC or mobile devices). Information is sent via IP (GPRS or WiFi) to a database server containing clinical data, which can be accessed through a web application. The system was assessed by testing different patients with the support of a medical doctor, obtaining a positive performance.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502822]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>314</startPage>
			<endPage>318</endPage>
			<fileSize>745</fileSize>
			<authors><![CDATA[Tello, Juan Pablo;Manjarres, Oscar;Quijano, Mauricio;Blanco, Arcelio;Varona, Fabian;Manrique, Maria;]]></authors>
		</item>
		<item>
			<title><![CDATA[Research of NIR exposure levels in diagnostic MRI environments]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502823]]></link>
			<description><![CDATA[In view of concern regarding the possible adverse health effects that may be derived from exposure to non-ionizing radiation in the radio frequency spectrum, the evaluation of different exposure scenarios is needed. Within these scenarios can be considered the magnetic resonance imaging systems used for medical diagnosis. This article identifies areas of human exposure to radiofrequency fields closer to MRI systems and evaluates the electromagnetic power density existing in these areas. The levels measured are similar to, or lower than those observed in other scenarios, and comply with national and international directives.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502823]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>319</startPage>
			<endPage>323</endPage>
			<fileSize>482</fileSize>
			<authors><![CDATA[Rodriguez, Conrado J.;Vanella, Oscar R.;Bruni, Rodrigo G.;Taborda, Ricardo A.M.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Segmentation and 3D Reconstruction of Microbial Biofilms]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502824]]></link>
			<description><![CDATA[Capability of microbial biofilms to form biofilms is really important in biotechnology industries, environmental applications and medical applications. Therefore, the study of the structure and development of these organisms is essential. In this paper we develop and implement an algorithm, based on Mathematical Morphology, to analyze the structure and growing of microbial biofilms. This algorithm allows segmentation of a stack of images acquired from in vivo observation of microorganisms, using an inverted phase contrast microscope. Finally, a 3D reconstruction for an efficient visualization of the structure and topography of biofilms is done]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502824]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>324</startPage>
			<endPage>328</endPage>
			<fileSize>724</fileSize>
			<authors><![CDATA[Bouchet, Agustina;Pastore, Juan I.;Di Meglio, Leonardo;Robuschi, Luciana;Ballarin, Virginia;]]></authors>
		</item>
		<item>
			<title><![CDATA[Segmentation of Bone Marrow Biopsies by Mathematical Morphology in Color Spaces]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502825]]></link>
			<description><![CDATA[Anatomic and pathologic reports of histological slides give results indicating the presence of trabeculae, hematopoietic and fat cells. This allows evaluating the grade of some metabolic disorder, comparing normal values with pathological ones. Generally, quantifications are carried out by simple visual inspection presenting big inter-and intra-user differences. This work presents an automatic method for detecting different types of tissues in bone marrow biopsies using Mathematical Morphology in color spaces, in order to determine the marrow cellularity accurately. The method was tested with 30 images of bone marrow biopsies presenting different distributions of cellularity.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502825]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>329</startPage>
			<endPage>333</endPage>
			<fileSize>626</fileSize>
			<authors><![CDATA[Pastore, Juan I.;Bouchet, Agustina;Moler, Emilce;Ballarin, Virginia;]]></authors>
		</item>
		<item>
			<title><![CDATA[Selection of Induction Machine Models for Efficiency Evaluation in Electric Vehicles]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502826]]></link>
			<description><![CDATA[Different induction machine (IM) models are evaluated, with the aim to determine its usefulness in efficiency studies for electric vehicles (EV) traction drives. In particular, two simple IM models proposed in the literature, which take into account the additional losses, are compared. With this aim, model parameters are adjusted from experimental tests performed on a 4 kW IM. Then, results obtained from both models at different operating points are compared. Even when the estimation errors are similar when using both models, one of them is chosen because of its simplicity. Finally, a simple application of this model is proposed, which consists in use the model for obtaining a complete efficiency map of the IM, without need further essays. Such efficiency map can be used to evaluate the overall efficiency of the traction drive of an EV, or in EV design.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502826]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>334</startPage>
			<endPage>340</endPage>
			<fileSize>697</fileSize>
			<authors><![CDATA[Aguilera, Facundo;de la Barrera, Pablo Martin;De Angelo, Cristian Hernan;]]></authors>
		</item>
		<item>
			<title><![CDATA[Simulation and Analysis of the Radiation Pattern of Microstrip Patch-Type Antenna]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502827]]></link>
			<description><![CDATA[This paper presents the results of a research project aimed at studying the behavior of the radiation pattern of a patch antenna through computer simulations. In this sense, is present the basic guidelines for design, implementation and preliminary simulation of different antenna prototypes through an algorithm simulator developed in MATLAB ?? environment. Comparative studies of the simulation values are performed with the software LVDAM-ANT?? which relate simulation data with actual experimental values. The results obtained demonstrate the efficiency of the simulation algorithm developed to underpin the study presented in this paper.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502827]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>341</startPage>
			<endPage>346</endPage>
			<fileSize>801</fileSize>
			<authors><![CDATA[Martinez Campo, Sergio;Jimenez Bermudez, Rosa;Guzman Serna, Fabio;Oliveira, Mario Orlando;Perrone, Oscar E.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Software evolution and design patterns]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502828]]></link>
			<description><![CDATA[The livings being are the most complex and evolved machines. They have been evolving during three thousands of millions of years from very simple elements to become sophisticated living machines. The livings being have been improving their constitution and capabilities adapting themselves to the restrictions imposed by the context. These restrictions include the fight for the supremacy within the same species as well as between different ones. This evolution could be performed because every living being has a record about all its essence: the DNA. With all the information of every living being in its DNA, as if it were requirements of a software system, the species have been transferring its constitutional information to its descendent. The concept of reutilization exists in software development too. Nevertheless, the reutilization of living being is extremely superior compared with the reutilization in software engineering. In this paper we analyze the evolution of the living being and with compared it with software development, in order to enrich the reutilization of knowledge in software development.These instructions give you guidelines for preparing papers for IEEE TRANSACTIONS and JOURNALS. Use this document as a template if you are using Microsoft Word 6.0 or later. Otherwise, use this document as an instruction set. The electronic file of your paper will be formatted further at IEEE. Define all symbols used in the abstract. Do not cite references in the abstract. Do not delete the blank line immediately above the abstract, it sets the footnote at the bottom of this column.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502828]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>347</startPage>
			<endPage>352</endPage>
			<fileSize>430</fileSize>
			<authors><![CDATA[Solinas, Miguel;Antonelli, Leandro;]]></authors>
		</item>
		<item>
			<title><![CDATA[Software secure building aspects in Computer Engineering]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502829]]></link>
			<description><![CDATA[An application includes software and communications infrastructure. As for the latter there own solutions to focus on security, there to build secure software solutions. However, the construction of secure software remains a problem due to a strategy that proposes to incorporate security as an aspect to consider when it has implemented most or all of the functional requirements. The equal treatment of functional and security requirements is the starting point to ensure an improvement in software security. Incorporate security into every stage of Software Development Life Cycle (SDLC) is another criterion that contributes and leads to a conceptually Secure SDLC. To this we must add a special emphasis on including security from the elicitation of requirements. In all cases the security treatment should be approached with criteria to allow evidence to be used best practices for its construction and the best solutions to meet security requirements. This paper presents criteria used to build secure software, incorporating Security Patterns, since requirements elicitation phase.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502829]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>353</startPage>
			<endPage>358</endPage>
			<fileSize>536</fileSize>
			<authors><![CDATA[Solinas, Miguel;Antonelli, Leandro;Fernandez, Eduardo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Time Series Forecasting Using Bayesian Method: Application to Cumulative Rainfall]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502830]]></link>
			<description><![CDATA[In this work an algorithm to adjust parameters using a Bayesian method for cumulative rainfall time series forecasting implemented by an ANN-filter is presented. The criterion of adjustment comprises to generate a posterior probability distribution of time series values from forecasted time series, where the structure is changed by considering a Bayesian inference. These are approximated by the ANN based predictor in which a new input is taken in order for changing the structure and parameters of the filter. The proposed technique is based on the prior distribution assumptions. Predictions are obtained by weighting up all possible models and parameter values according to their posterior distribution. Furthermore, if the time series is smooth or rough, the fitting algorithm can be changed to suit, in function of the long or short term stochastic dependence of the time series, an on-line heuristic law to set the training process, modify the NN topology, change the number of patterns and iterations in addition to the Bayesian inference in accordance with Hurst parameter H taking into account that the series forecasted has the same H as the real time series. The performance of the approach is tested over a time series obtained from samples of the Mackey-Glass delay differential equations and cumulative rainfall time series from some geographical points of Cordoba, Argentina.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502830]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>359</startPage>
			<endPage>364</endPage>
			<fileSize>518</fileSize>
			<authors><![CDATA[Rodriguez Rivero, Cristian;Pucheta, Julian;Herrera, Martin;Sauchelli, Victor;Laboret, Sergio;]]></authors>
		</item>
		<item>
			<title><![CDATA[Traceability Proposal in Calibration of Electrosurgery Equipment]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502831]]></link>
			<description><![CDATA[The international Vocabulary of metrology defines traceability like the property of a measurement result by which the measurand can be related to a reference by means of an uninterrupted and documented chain of comparisons, each one of which contributes to the measurement uncertainty. Basing on this definition we can speak of traceability like the succession of patterns and calibrations that relate a measurement result to a reference. The present work shows the importance of these concepts applied in the area of electromedical equipment, more specifically in the calibration of electrosurgery equipment. In this work also discuss the operation of electrosurgical equipment, the parameters being to calibrate by means of analyzers, how they instruments make the measurement of the parameters previously mentioned and the methods of calibration.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502831]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>365</startPage>
			<endPage>369</endPage>
			<fileSize>551</fileSize>
			<authors><![CDATA[Gomez, German;]]></authors>
		</item>
		<item>
			<title><![CDATA[Traffic Analysis over a VoIP Server]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502832]]></link>
			<description><![CDATA[This paper describes a traffic study over a VoIP server. The aim is to perform a study to know the traffic of communications of the current system installed and so what is the bandwidth needed to replace the existing traditional phone system for a new IP telephony system. After this study we used a simulator to know which is the maximum traffic supported by the VoIP server, to know if the system can support all users connected. Finally there will be a study to know what the bandwidth needed to establish a link between two VoIP servers located at two sites separated by a distance of 3 Km.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502832]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>370</startPage>
			<endPage>375</endPage>
			<fileSize>606</fileSize>
			<authors><![CDATA[Micolini, Orlando;Herrera, Augusto;]]></authors>
		</item>
		<item>
			<title><![CDATA[Verifying Properties of Scenarios with Fixed Points]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502833]]></link>
			<description><![CDATA[During the requirements elicitation phase a software engineer tries to determine what the customer really wants (and needs.) This task requires, on the one hand, strong communication skills and, on the other hand, a good engineering background to construct a coherent set of requirements. There is a thus a conflict informal and formal techniques. Scenarios are a powerful communication tool and may be given a formal semantics so that they may be amenable to formal verification. We present a method to verifying properties of scenarios based on fixed points of predicate transformers. This work is adapted from an approach that had been originally proposed by Sifakis for transition systems. Scenarios are modelled in a similar way to Diijkstras guarded commands.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502833]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>376</startPage>
			<endPage>381</endPage>
			<fileSize>446</fileSize>
			<authors><![CDATA[Wehbe, Ricardo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Vertical Underwater Acoustic Channel Model in Sensor Networks for Coastal Monitoring]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502834]]></link>
			<description><![CDATA[In this paper a propagation model of acoustic signals in an underwater channel is analyzed. This one is applied to a short vertical communication link. In this way, it's possible to predict the transmission loss, the noise level, the propagation delay and the general shapes of the used acoustic signals. These parameters can be used to design an efficient communication system for transmitting information between a buoy in the surface of the sea, that compose a sensor network for coastal monitoring in the San Jorge gulf, and a data acquisition system in the bottom of the sea. The transmitted signals are encoded using Spread Spectrum Direct Sequence techniques, employing Golay sequences. The simulations results obtained show that it's possible to correctly detect the encoded signals even in those cases where an adverse condition of channel absorption and low SNR are present.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502834]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>382</startPage>
			<endPage>388</endPage>
			<fileSize>736</fileSize>
			<authors><![CDATA[Pires, Jorge;Colombo, Martin;Gallardo, Jose;De Maziani, Carlos;Alcoleas, Romulo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Vibrating Intrinsic Reverberation Chamber for Electromagnetic Compatibility Measurements]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502835]]></link>
			<description><![CDATA[This paper introduces the basic concepts and implementation of a Vibrating Intrinsic Reverberation Chamber (VIRC). This kind of chambers is used in electromagnetic compatibility testing, and offer some advantages compared to traditional chambers. An introduction, an overview of theoretical principles, a description of the VIRC recently built at the CAERCEM research center at Instituto Tecnol??gico de Buenos Aires, and some measurements obtained during its initial characterization process are included.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502835]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>389</startPage>
			<endPage>395</endPage>
			<fileSize>681</fileSize>
			<authors><![CDATA[Serra, Ramiro;Rodriguez, Andres;]]></authors>
		</item>
		<item>
			<title><![CDATA[Watermark Detector Based on Stochastic Resonance Phenomenon]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502836]]></link>
			<description><![CDATA[In this work it is presented an application of the striking Stochastic Resonance phenomenon to Telecommunication field. This allows the detection of signals in very low signal-noise scenarios only if the appropriated amount of noise is added. As a result of our analysis we developed a prototype over FPGA development board which consists of a detector system of watermarks in audio signals based on Stochastic Resonance mechanism.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502836]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>396</startPage>
			<endPage>401</endPage>
			<fileSize>735</fileSize>
			<authors><![CDATA[Lanfranco, Sebastian;Mazzini, Lucas Horacio;Dominguez, Alfredo Eduardo;Naguil, Jorge Luis;]]></authors>
		</item>
		<item>
			<title><![CDATA[Waveform Selection for Electrical Impedance Tomography]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502837]]></link>
			<description><![CDATA[Electrical Impedance Tomography (EIT) is a non??invasive method that can be used to estimate the electrical conductivity of the head tissues. It is based on the measurement of electric potential on the scalp generated by the injection of a small electric current. If the generated electric potential distribution is measured with an Electroencephalography (EEG) equipment, the neural activity of the brain will produce signals that may affect the EIT measurements. In the present work we propose a method to reduce the effect of these signals and show a procedure to obtain the minimum number of samples that is needed to neglect the effect of the brain activity. The method requires the obtention of the optimum waveform for the applied current to minimize the variance of the electric potential estimation. As an example, the method is applied to two sets of EEG measurements of two patients, and we determine the optimum waveform and minimum number of samples for each measurement set. We also show that the replacement of the optimum waveform by a sinusoid with arbitrary phase does not significantly affect the estimations, but a previous spectral analysis of the brain activity must be performed in order to determine convenient frequencies]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502837]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>402</startPage>
			<endPage>407</endPage>
			<fileSize>683</fileSize>
			<authors><![CDATA[Fernandez-Corazza, Mariano;Beltrachini, Leandro;von Ellenrieder, Nicolas;Muravchik, Carlos;]]></authors>
		</item>
		<item>
			<title><![CDATA[ZigBee Wearable Sensor Development for Upper Limb Robotics Rehabilitation]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502838]]></link>
			<description><![CDATA[This paper presents a novel tool oriented to upper limb therapy and rehabilitation and a new wireless sensors technology application in rehabilitation robotics destined to post-stroke patients. Design was based on Inertial Measurement Units (IMUs) communicating trough of a ZigBee Network. This Body sensor network allows kinematics register and electrical activity quantification in muscles during rehabilitation therapy. The IMU implementation was based on a direction cosine matrix. The validation technique was represented by a kinematics measurement of tridimensional videography. Simultaneous registers, from cameras of kinematics videography and IMUs were compared on the gesture of reaching and grasping repetitions.&#61472;]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502838]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>408</startPage>
			<endPage>413</endPage>
			<fileSize>756</fileSize>
			<authors><![CDATA[Braidot, Ariel A.;Cifuentes, Carlos C.;Frizera Neto, Anselmo;Frisoli, Melisa;Santiago, Alfonso;]]></authors>
		</item>
		<item>
			<title><![CDATA[A Model For Permanent Magnet Synchronous Machines With Demagnetization Faults]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502839]]></link>
			<description><![CDATA[An analytical model for permanent magnet synchronous machines with demagnetization faults is proposed. Using this model, the effects of fault on the induced EMF for different winding configurations are analyzed. The results are validated for two winding configurations by a finite element model. Finally, experimental results for a machine with demagnetization are presented to validate the proposal]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502839]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>414</startPage>
			<endPage>420</endPage>
			<fileSize>836</fileSize>
			<authors><![CDATA[Ruschetti, Cristian;Verucchi, Carlos;Bossio, Guillermo;Garcia, Guillermo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Benders Decomposition applied to Security Constrained Unit Commitment]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502840]]></link>
			<description><![CDATA[Security Constrained Unit Commitment is a large scale optimization problem of fundamental application in modern power system operation control centers. Benders decomposition is one of the most applied methodologies on the Security Constrained Unit Commitment Problem. One of the related drawbacks with this methodology is its oscilating behaivior wich in turns affects the convergence of the algorithm. In this work several options to improve the convergence of the Benders algorithm are presented]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502840]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>421</startPage>
			<endPage>425</endPage>
			<fileSize>489</fileSize>
			<authors><![CDATA[Alemany, Juan M.;Magnago, Fernando;Moitre, Diego;]]></authors>
		</item>
		<item>
			<title><![CDATA[Cables and conductors protection, part I: cables]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502841]]></link>
			<description><![CDATA[The objective of the work is to show the requirements of the protection of cables against overcurrents, proposing an application guide, maximising the use of its load capability. It is analysed the behaviour of the cables in front of short circuits and overcurrents, explaining the thermal and electrodynamical limitations. The operation of the current limiting and expulsion fuses is studied. The methodology is presented to specify the curves current-time of the cables. It is considered the heating by the overcurrents in the conductor, screen and shield, calculating the life loss following the Arrhenius law. As a result it is in detail indicated the procedure of coordination of the characteristic curves of the cable and fuses, pointing out the best fuse. It is concluded that the low voltage high breaking capacity (HBC) and expulsion fuses possess appropriate characteristic curves for cable protection.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502841]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>426</startPage>
			<endPage>431</endPage>
			<fileSize>497</fileSize>
			<authors><![CDATA[Gomez, Juan C.;Campetelli, N.G.;Reineri, C.A.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Cables and conductors protection, part II: overhead conductors]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502842]]></link>
			<description><![CDATA[One of the applications of fuses is the overhead lines protection. Usually the fuse is selected taking into account selective coordination, thus the overhead line is not protected against overheating, which causes two application limits, the mechanical strength weakening, and the minimum distance to earth. The conductor over-temperature for steady-state conditions can be assessed by using a simple exponential equation. A simplified solution is proposed, which gives for each current value the time needed to reach the limit temperature, being a time-current characteristic. The over-temperature as time function was assessed, in order to calculate the useful life lost and the conductor creep. This simple methodology allows a more rational fuse selection for the bare overhead conductor protection.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502842]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>432</startPage>
			<endPage>438</endPage>
			<fileSize>644</fileSize>
			<authors><![CDATA[Gomez, Juan C.;Florena, E.;Zamarillo, G.;Amatti, Juan C.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Characterization of Voltage Sags and its Impact on Sensitive Loads in a MV System with Distributed Generation for Single-phase Fault]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502843]]></link>
			<description><![CDATA[This paper presents an analysis and detailed study on the impact of the inclusion of distributed generation (DG) in MT distribution system to mitigate the effects of voltage sags and associated events such as unbalance and overvoltage in sensitive equipment of the users due to a single phase fault. Modeling in ATP / EMTP of a real system in its different load states and changes in indicators of GD has concluded that the presence of distributed generation is beneficial, attenuating the effects of voltage sags during faults in the sensitive equipment and therefore can be considered as a solution and a basic alternative in electrical systems.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502843]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>439</startPage>
			<endPage>446</endPage>
			<fileSize>651</fileSize>
			<authors><![CDATA[Piumetto, Miguel;Gomez Targarona, Juan C.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Compensation with Hybrid Active Power Filter in an Industrial Plant]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502844]]></link>
			<description><![CDATA[This paper presents the application of a hybrid active power filter for reactive and harmonic compensation at the level of Medium Voltage (MV) of an electrical network of an industrial plant. It is considered as control algorithm, the application of the d-q theory and performing the current measuring in the system, establishing a feedback control loop (feedback). It is analyzed a hybrid topology called Shunt Hybrid Active Power Filter SHAPF. This proposal uses an existing capacitor bank, transformed into a passive filter, and connected in series with the Active Filter to build a hybrid filter in which the compensation supplement is made by the active filter. We analyze different scenarios of operation. The topology has very good performance under steady state and transient]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502844]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>447</startPage>
			<endPage>452</endPage>
			<fileSize>1242</fileSize>
			<authors><![CDATA[Corasaniti, Fabian;Barbieri, Beatriz;Arnera, Patricia;]]></authors>
		</item>
		<item>
			<title><![CDATA[Development Of Unconventional Equipment For Medium Voltage Operations-ENRUTADOR]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502845]]></link>
			<description><![CDATA[The four position load break disconnector switch or Enrutador, is the result of a design work, which starts on the actual needs to have simpler, integral, functional and economic technological solutions, for the insertion of transformers in medium voltage networks. In this paper we propose a tentative design for the device and develop the checks that will qualify its suitability and technical feasibility of manufacturing and operation.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502845]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>453</startPage>
			<endPage>459</endPage>
			<fileSize>1224</fileSize>
			<authors><![CDATA[Gauna, Marco A.;Sbarato, Sergio O.;Ybanez, Jose F.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Distributed Generation: impact on Protections and Power Quality]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502846]]></link>
			<description><![CDATA[The present energy crisis drives to carry to an extreme the use of all the available energy sources, which need to be connected in their closest point. Traditional electric systems are changing their characteristics. Power quality is one of the aspects modified by the presence of distributed generation (DG), specially respect to harmonics, flicker, voltage sags and overvoltages. The new protection problems of the different parts of the system are explained. The contribution of generators to short circuit currents is analyzed. Philosophy changes are studied, such as: fault current bi-directionality, modification of the protection reach, failures of the overcurrent coordination, etc. It is analyzed the impact of the ??islanding operation". It is concluded that DG application offers technical-economic advantages so much to the utility as to the user.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502846]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>460</startPage>
			<endPage>465</endPage>
			<fileSize>829</fileSize>
			<authors><![CDATA[Gomez, Juan C.;Vaschetti, Jorge;Coyos, Carlos;Ibarlucea, C.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Dynamic Modeling, Simulation and Control of Hybrid Energy Storage System Based on Compressed Air and Supercapacitors]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502847]]></link>
			<description><![CDATA[In this paper, the dynamic modeling and the control design of hybrid energy storage system based on compressed air and supercapacitors (CAES-SC) is presented, which converts excess energy from the power supply to stored pneumatic energy by using a compressor. Efficient charging and discharging of the device is performed under maximum power conditions, so that the machine speed is adjusted for this requirement, and the energy delivered to the power system is controlled through an intermittent operation of the pneumatic converter. In order to smooth the desired output power of the system, a supercapacitors bank (SC) is utilized. In this context, power electronics and its control play a significant role in the integration of the CAES-SC system into the network. The dynamics of the power conditioning system (PCS) and the hybrid energy storage unit with SCs (SCES), affect the validity of the CAES-SC system for power system dynamic control, allowing controlling the energy exchange between all devices. The dynamic performance of the proposed systems is evaluated by digital simulation in SimPowerSystems of MATLAB/Simulink.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502847]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>466</startPage>
			<endPage>472</endPage>
			<fileSize>1084</fileSize>
			<authors><![CDATA[Martinez, Maximiliano;Molina, Marcelo G.;Frack, Federico;Mercado, Pedro E.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Economic Dispatch of Energy and Reserve in Competitive Markets Using Meta-heuristic Algorithms]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502848]]></link>
			<description><![CDATA[This paper proposes a methodology for the economic dispatch of energy and reserve, in which the reserve requirement is obtained endogenously in the optimization process of the energy dispatch. The formulation assumes that the reserve can be offered both by generation units and flexible demands, which is optimized together with the active power dispatch. To solve this problem, we propose the use of an innovative hybrid methodology that integrates traditional linear programming to calculate the optimal power flow nested within a meta-heuristic algorithm, whose control variable is the reserve vector (reserve assigned to each unit). Thus, faults and congestion of the transmission system are taken into account by providing an optimal location of the reserve. In addition, this paper compares two meta-heuristic models: An evolutionary model widely used in various optimization problems, Evolutionary Particle Swarm Optimization (EPSO) and a novel model known as Mean-Variance Mapping Optimization (MVMO]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502848]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>473</startPage>
			<endPage>478</endPage>
			<fileSize>641</fileSize>
			<authors><![CDATA[Chamba, Marlon;Ano, Osvaldo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Educational Software for Power Quality Analysis]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502849]]></link>
			<description><![CDATA[This paper presents educational software that allows users to generate, detect and classify electrical power disturbance signals using a Wavelet Transform and Neural Networks based algorithm. This software includes four main modules: a) Signal Acquisition Module that allows the incorporation of waveforms stored in a data base; b) Generation Module which permits the generation of diverse disturbed waveforms; c) Detections Module provides tools to analyze different disturbance detection algorithms and d) Classification Module that determines the disturbance type using different pattern classification methods.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502849]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>479</startPage>
			<endPage>485</endPage>
			<fileSize>801</fileSize>
			<authors><![CDATA[De Yong, David;Reineri, C.;Magnago, Fernando;]]></authors>
		</item>
		<item>
			<title><![CDATA[Emulation of Synchronous Generator for Frequency Control of Smart Microgrids]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502850]]></link>
			<description><![CDATA[Microgrids (MGs) are emerging as a new paradigm for the integration of Distributed Generation (DG) assets. These novel grid structures present significant benefits to the Electric Power System. One of the most important benefits is the reliability improvement due to the capacity of islanded stand-alone operation. Nevertheless, this stand-alone operation can bring some problems related to frequency control, especially in MGs with many DG units connected through power electronics interfaces. In this case, the frequency control capacity and hence the stability margins are drastically reduced. This paper presents the design and implementation of a proton exchange membrane fuel cell integrated with supercapacitor energy storage and its control strategy for the frequency control of ac-MGs]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502850]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>486</startPage>
			<endPage>491</endPage>
			<fileSize>889</fileSize>
			<authors><![CDATA[Frack, Pablo F.;Martinez, Maximiliano;Molina, Marcelo G.;Mercado, Pedro E.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Forecasting of the Transformer Core Destruction Factor by means of Multivariate Methods for Data Analysis]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502851]]></link>
			<description><![CDATA[In designing and building of transformers, the core destruction factor is the superposition of all effects that cause a difference between the value of the core losses calculated during the design stage of the unit and the measured value after built. In this paper, two methods for forecasting the core destruction factor are proposed. One based on Mahalanobis distance and the other one based on cluster analysis. A comparison of the results obtained by conventional calculation procedure with respect to those obtained through the proposed methodologies is developed. Finally, the expected cost savings by applying the methods proposed in this article are estimated.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502851]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>492</startPage>
			<endPage>498</endPage>
			<fileSize>518</fileSize>
			<authors><![CDATA[Diaz, Guillermo A.;Romero Quete, Andres A.;Mombello, Enrique E.;Furlan, Norma L.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Harmonic State Estimation on a Radial Distribution System with Distributed Generation]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502852]]></link>
			<description><![CDATA[In the present work, a state estimation technique is applied to calculate the amplitudes and phase angles of the harmonic currents injected at the buses of a power distribution system. To this effect, the model of a 50-Hz 13.2-kV 4-bus radial system is used. The grid (source) and a generator are connected at opposite ends of the system, following a configuration known as distributed generation, which is becoming quite usual nowadays. In this particular implementation, the nodal harmonic voltages are presented as the state variables instead of the harmonic currents. This follows the same structure as a traditional fundamental frequency state estimation. As a further step, the injected harmonic currents are calculated from the corresponding injected powers and nodal voltages.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502852]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>499</startPage>
			<endPage>504</endPage>
			<fileSize>463</fileSize>
			<authors><![CDATA[Ferreyra, Diego;Sarmiento, Carina;Reineri, Claudio;]]></authors>
		</item>
		<item>
			<title><![CDATA[High Reliability and Performance PWM Inverter for Standalone Microgrids]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502853]]></link>
			<description><![CDATA[In this paper a high reliability and performance single-phase PWM inverter for standalone microgrids is presented. To obtain the before mentioned characteristics this work propose, two different controller structures and a straightforward design methodology for these controllers, based on the internal model principle. In order to validate the proposed design methodology, digital controllers and to demonstrate the steady state and transient performance, experimental results are presented from a 5kVA PWM modulated single phase inverter, fully controlled by a DSP TMS320F2407.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502853]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>505</startPage>
			<endPage>511</endPage>
			<fileSize>792</fileSize>
			<authors><![CDATA[Botteron, Fernando;Carballo, Roberto;Nunez, Ruben;Quintana, Angel;Fernandez, Guillermo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Management of Mechanical Vibration and Temperature in Small Wind Turbines Using Zigbee Wireless Network]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502854]]></link>
			<description><![CDATA[This paper presents the development of a methodology to manage the mechanic vibration and temperature from Small Wind Turbine (SWT). The objective with this research is propose a new diagnostic and protection tool through analysis and monitoring signals of vibration and temperature from wind turbines, aiming predict a need of preventive maintenance and mostly avoids catastrophic failures. For this feature the system will be composed of a Triple Axis accelerometer who will identify vibration, thermocouples to identify the temperatures at critical points of wind turbine, a microcontroller hardware which will make acquisition and processing of signals from sensors and finally a wireless transmission system using technology ZigBee. The post processing is performed remotely through a computer that receives the data submitted via wireless network presenting them to the user via graphical interface. The software of User friendly interface will have the functionality plus online display of received data also the possibility of storing and reporting data rates of vibration and temperature obtained during monitoring. Finally featuring the prototype of the hardware and software as well as some results obtained in experimental scale.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502854]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>512</startPage>
			<endPage>517</endPage>
			<fileSize>876</fileSize>
			<authors><![CDATA[Diogo Spacek, Anderson;Hideo Ando Junior, Oswaldo;Mota Neto, Joao;Coelho, Vilson;Oliveira, Mario;Shaeffer, Lirio;Gruber, Vilson;]]></authors>
		</item>
		<item>
			<title><![CDATA[Patterns Extraction for Lightning Transmission Lines Protection Based on Principal Component Analysis]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502855]]></link>
			<description><![CDATA[Protection relays are designed and applied in power systems to protect equipment from excessive damage and to maintain system integrity and stability. The main operations of relays such as early fault identification, rapid equipment isolation and fault location are imperative to maintain the reliability and integrity of the system. However, traditional protection schemes, such as Transient Based Protection (TBP) and protection schemes based on impedance measurements suffers mal-operation due to the presence of lightning stroke on transmission lines. Therefore, in order to avoid mal-operation and delayed tripping, protection schemes must be able to discriminate lightning strokes correctly. With this purpose, almost all lightning transmission lines protective relaying algorithms use integral transforms such as the Fourier transform and the wavelet transform. However those techniques can only provide an average attribute of the signals or their components. This work, introduces Principal Component Analysis (PCA) to extract patterns of lightning strokes on transmission lines. Results show that lightning stroke can exhibit well-defined patterns which can be used to classification and location of lightning strokes.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502855]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>518</startPage>
			<endPage>524</endPage>
			<fileSize>506</fileSize>
			<authors><![CDATA[Morales, Jhon A.;Orduna, Eduardo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Power System Harmonics Estimation Using Clonal Selection Algorithm]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502856]]></link>
			<description><![CDATA[The three-phase voltage and current waveforms from an Power System (PS) are not considered pure sinusoids due to the presence of, among others, the harmonic distortion. This paper presents an approach based on Clonal Selection algorithm for the estimation of harmonic components. The Clonal Selection Algorithm (CLONALG) is a technique of search / optimization inspired by the theory of Clonal Selection. The technique uses an population of antibodies to search within a multi-dimensional space. The results demonstrate that the method can accurately identify the harmonic components in a distorted waveform, and are better than the results obtained by a classical technique (Discrete Fourier Transform).]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502856]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>525</startPage>
			<endPage>530</endPage>
			<fileSize>659</fileSize>
			<authors><![CDATA[Holanda, Luanna;Rabelo, Ricardo;Lemos, Marcus;Barbosa, Daniel;]]></authors>
		</item>
		<item>
			<title><![CDATA[PV cells protection by using class PV fuses]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502857]]></link>
			<description><![CDATA[During the last 50 years, the application of Photovoltaic cells (PV cells) has increased at a high speed. PV cells have special characteristics that require protective devices specifically designed for this application, among which the fuse presents optimum features. The main characteristics are: dc power generation, low short-circuit current and low X/R ratios, behavior influenced by temperature, etc. The most used gPV fuse specification is the new IEC 60269-6, that gives some rough guidelines. Also fuse manufacturers give ??application rules?? that have some inconsistencies and difficult the fuse selection. The need for more coordinated work between PV cells and fuses manufacturers is stressed, indicating the areas where this work is required.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502857]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>531</startPage>
			<endPage>537</endPage>
			<fileSize>536</fileSize>
			<authors><![CDATA[Gomez, Juan C.;Tourn, Daniel;Nesci, S.;Zamarillo, G.R.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Reconfiguration of electrical networks by an Ant Colony Optimization algorithm]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502858]]></link>
			<description><![CDATA[Electricity distribution companies constantly require improvements in service, and an appropriate reduction in costs of the system. Finding the optimal configuration of the distribution network reduces power losses, which impacts directly on costs, also leading to significant energy savings. Over recent decades, the problem of network reconfiguration for loss minimization and for other purposes has been widely studied. The algorithms improve the previously obtained minimum power loss and also reduce computational times. This paper proposes the study and application of an algorithm based on Ant Colony Optimization, method covered in the paradigm of Swarm Intelligence, sub-discipline of Computational Intelligence. We show an easy network codification and we performed a detailed study of the ranges of values for the configuration parameters of the algorithm. We achieved the optimal result for testing networks and we found appropriate configurations for more complex networks, taking low computational times.&#61472;]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502858]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>538</startPage>
			<endPage>544</endPage>
			<fileSize>500</fileSize>
			<authors><![CDATA[Scenna, Felix;Anaut, Daniel;Passoni, Lucia I.;Meschino, Gustavo J.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Simulation of a Wind-Power Plant Linked to a Transmission Grid&#61630;Part I: Modeling the Basic Wind Farm]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502859]]></link>
			<description><![CDATA[This paper is divided into two parts, the first presents the modeling and simulation of a wind generator connected to the power grid, is covered in detail each component of the wind farm. For the simulation package is used Alternative Transients Program (ATP) showing the versatility of this model to incorporate non-existent models. All parameters respond to simulated models of commercial properties and specifications provided by power system operators. Shows in detail the implementation of the wind turbine by using the simulation language MODELS ATP itself. The paper concludes with a simulated wind contingency showing the response of the entire chain. The ATP package is shown capable of simulating the studies requested by the Compa????a Administradora del Mercado Mayorista El??ctrico (CAMMESA). The second part deals with two basic studies related to wind power, capacitive compensation and blade control.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502859]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>545</startPage>
			<endPage>552</endPage>
			<fileSize>965</fileSize>
			<authors><![CDATA[Vaschetti, Jorge;Gomez Targarona, Juan C.;Arcurio, Jorge;]]></authors>
		</item>
		<item>
			<title><![CDATA[Simulation of a Wind-Power Plant Linked to a Transmission Grid:Part II: Capacitive Compensation and Pitch Control]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502860]]></link>
			<description><![CDATA[In the first part of this paper discussed the modeling and simulation of the components that make up a wind farm, the following is a basic study on two aspects that arise in a wind farm, the capacitive compensation and blade control. The review of the compensation done at static and dynamic problems is presented with some possible solutions. The concepts of blade control are presented and the simulation of two types of control, fixed gain and variable gain are given. The exchange of active power and reactive power between the grid and the wind farm is analyzed and the effects and solutions to various contingencies wind are shown. It shows the ability of the package ATP (Alternative Transients Program) to conduct studies of Stage I, Stage II and Stage III requested by the Compa????a Administradora del Mercado Mayorista El??ctrico (CAMMESA), especially those that refer to electromagnetic transients and power quality.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502860]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>553</startPage>
			<endPage>559</endPage>
			<fileSize>913</fileSize>
			<authors><![CDATA[Vaschetti, Jorge;Gomez Targarona, Juan C.;Arcurio, Jorge;]]></authors>
		</item>
		<item>
			<title><![CDATA[Some considerations in the behavior of Grounding Systems with impulsive solicitations]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502861]]></link>
			<description><![CDATA[This paper discusses the methodology used in the desing of Grounding Systems (GS) with slow and fast impulses. We identify the more important parameters related to the behavior of the GS for these types of impulses. We discussed if the values of these parameters are significant in the magnitudes values considered for the traditional design of a GS. &#61472;]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502861]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>560</startPage>
			<endPage>565</endPage>
			<fileSize>611</fileSize>
			<authors><![CDATA[Ybanez, Fernando;Molina, German R.;Piumetto, Miguel;Carvajal, Gerardo;]]></authors>
		</item>
		<item>
			<title><![CDATA[Transmission Expansion Planning under Uncertainty: An Approach based on Real Option and Game Theory against Nature]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502862]]></link>
			<description><![CDATA[Generally, transmission networks are not adapted to the new paradigms of the emerging power markets; therefore, transmission lines often operate under significant congestion levels. These issues are even more increased in power systems with high levels of demand growth, where usually even larger grid reinforcements are required. In addition, the technical and economic feasibilities of expansion alternatives are affected by the major uncertainties of the emerging economies. Consequently, this paper proposes a transmission system expansion approach focused on analysis and management of the risks which impact on the assessment of transmission investments. In this context, the valuations of transmission investments under random uncertainties are performed in terms of the social welfare, by designing risk management strategies based on real option concepts. Finally, non-random uncertainties are analyzed by criteria based on game theory against nature, in order to assess the robustness of a given expansion alternative under unforeseen scenarios. The approach is illustrated by a real application to the transmission syst]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502862]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>566</startPage>
			<endPage>571</endPage>
			<fileSize>561</fileSize>
			<authors><![CDATA[Lopez, Sonia;Aguilera, Alexander;Blanco, Gerardo;]]></authors>
		</item>
		<item>
			<title><![CDATA[A Constructivist Approach for Teaching Embedded Systems]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502863]]></link>
			<description><![CDATA[Due to the technological breakthrough of recent years, electronic devices have become an important part of everyday life. Most of these devices falls within the class of systems called embedded systems. This article presents a proposal for a course on embedded systems. The proposal is based on a constructivist approach to teaching, with particular emphasis on problem-based learning.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502863]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>572</startPage>
			<endPage>578</endPage>
			<fileSize>419</fileSize>
			<authors><![CDATA[Ordinez, Leo;Alimenti, Omar;]]></authors>
		</item>
		<item>
			<title><![CDATA[A Motivating Experience for Learning Alternaing Current]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502864]]></link>
			<description><![CDATA[This paper describes a proposal for teaching the concept of alternating current. While carrying out the task, the active participation of students will be encouraged. The teaching strategies will be directed to promote active learning, motivating curiosity and experimentation. In this way, students will establish more solid relationships between theory and practice. With this objective in mind, common elements and instruments currently used in a laboratory of electronics will be used to teach the relationship between perceptible effects and the mathematic model which describes alternating current. From the wave's observable characteristics, students will be able to find the relationship with the image display by the oscilloscope. Other new technical concepts will also be introduced, such as noise, signal, distortion and link. Once the student has interpreted these concepts, he will be able to understand the most relevant parameters of an electric signal. This paper will argue not only the importance of this learning methodology, in which students are in charge of their own discoveries but also the relevance of this kind of practical activities in the training of future engineers. During the years in which this methodology was incorporated, students showed higher motivation in learning and were also able to make interesting hypothesis and elaborate more accurate conclusions.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502864]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>579</startPage>
			<endPage>584</endPage>
			<fileSize>763</fileSize>
			<authors><![CDATA[Drudi, Susana;Litvack, Federico;Chesini, Ezequiel;Castro, Ana;Pisetta, Renzo;Becerra, Lucas;]]></authors>
		</item>
		<item>
			<title><![CDATA[A Robotics Club Experience as a complement to Engineering Education]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502865]]></link>
			<description><![CDATA[The Robotics Club of the School of Engineering of the Universidad de Buenos Aires is an extracurricular activity which has the objective to be a space for learning robotics. In the present paper we describe the organization and working methodology of the Club. We analyze the difficulties of this activity and enumerate our achievements up to date. We also set out new challenges for the non-formal education techniques, particularly those referred to maintaining students' motivation.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502865]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>585</startPage>
			<endPage>590</endPage>
			<fileSize>900</fileSize>
			<authors><![CDATA[Chiesa, Alberto Lucas;Corbellini, Ernesto M.;Gonzalez, Tomas A.;Burman, Ariel;]]></authors>
		</item>
		<item>
			<title><![CDATA[Actions Towards the Application of Intelligent Systems in Computer Education]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502866]]></link>
			<description><![CDATA[In this work we present two courses of action as part of a research project which is focused in the use of intelligent tutoring systems and robots to improve the learning process of programming for the engineering field. The first method we use is the application of neural networks to the prediction of academic performance of students of programming and, on the other hand, we are developing practical activities based in robot programming for the same student universe as a motivational tool. These actions are the first steps to a learning strategy based on feedback and motivation, by applying intelligent systems in the process of teaching and learning programming applied to engineering field.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502866]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>591</startPage>
			<endPage>595</endPage>
			<fileSize>427</fileSize>
			<authors><![CDATA[Diaz, Laura C.;Algorry, Aldo;Eschoyez, Maximiliano;Barto, Carlos;]]></authors>
		</item>
		<item>
			<title><![CDATA[Assessment of the Learning Efficacy in Engineering Classrooms]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502867]]></link>
			<description><![CDATA[This work describes the experiences shared by professors in Electric Machinery, and Electric Machinery and Installations, included in Electromechanical Engineering and Electronics Engineering respectively, at the San Francisco Regional Faculty of the National Technological University. Said experiences were gained while attempting to improve the efficiency and efficacy of the teaching-learning process in the classroom by means of a continuous learning assessment system which was aimed at fostering participation and proactivity among the students, both in the classroom and in the final exams. After almost one decade of testing and discussion, these professors finally developed a method applying proven pedagogical techniques in which students combine commitment, interchange, written production and shorter delays to pass the subject examination.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502867]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>596</startPage>
			<endPage>599</endPage>
			<fileSize>514</fileSize>
			<authors><![CDATA[Gallo, Omar;Ferreyra, Diego;Beinotti, Raul;]]></authors>
		</item>
		<item>
			<title><![CDATA[BDD-based Algorithm for the Minimum Spanning Tree in Wireless Ad-hoc Network Routing]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502868]]></link>
			<description><![CDATA[Dynamic power controlled routing has become a viable alternative to traditional routing protocols in wireless ad hoc networks, particularly with the goal of making a more efficient power management. The existing schemes in this approach tend to converge to a route comprised of a minimum spanning tree between the source and destination nodes. However, this final route is found by an iterative procedure. In the current paper, a proposal is made which builds the final route in one step, by calculating the corresponding minimum spanning tree using a low complexity algorithm based on BDDs.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502868]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>600</startPage>
			<endPage>601</endPage>
			<fileSize>377</fileSize>
			<authors><![CDATA[Yanez-Marquez, Cornelio;Lopez-Yanez, Itzama;Camacho-Nieto, Oscar;Arguelles-Cruz, Amadeo Jose;]]></authors>
		</item>
		<item>
			<title><![CDATA[Evaluation of Desertification Processes in Ouricuri-PE Through Trend Estimates of Times Series]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502869]]></link>
			<description><![CDATA[Desertification is one of the world's direst environmental and ecological issue. However, the absence of reliable methods of identifying the processes of desertification is one of the main factors related to the critical study of this topic. This work has a goal to present a model capable of carrying out this task, by using estimation methods on temporal series of images. In this sense, a Landsat TM images were used to evaluate the degradation in Ouricuri, located in the State of Pernambuco, through the techniques of PDI (Image Processing), using the Normalized Difference Vegetation Index (NDVI) and the implementation of methods tendency estimation of temporal series. Thematic maps were produced of the degraded area between the years 1989 and 2009 to evaluate the evolution of this period of desertification, plus the estimation of soil degradation in the year 2019.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502869]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>602</startPage>
			<endPage>606</endPage>
			<fileSize>959</fileSize>
			<authors><![CDATA[Nunes Sousa, Willamys Rangel;Sousa Couto, Mailson;Felix Castro, Angelica;Pereira Santos Silva, Marcelino;]]></authors>
		</item>
		<item>
			<title><![CDATA[Fast Route Convergence in Dynamic Power Controlled Routing for Wireless Ad??hoc Networks]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502870]]></link>
			<description><![CDATA[Previous work in wireless ad-hoc network routing has given rise to dynamic power controlled routing, which in turn enables variable-range transmissions. However, one limitation found in such protocols is the inclusion of at most one redirector in the route at each iteration. The work presented here introduces a redirector discovery algorithm which reaches the final route in less iterations, by including the possibility of adding two redirectors in each iterations. With this faster route convergence, greater power savings may be achieved, with the corresponding advantages this brings]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502870]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>607</startPage>
			<endPage>608</endPage>
			<fileSize>400</fileSize>
			<authors><![CDATA[Lopez Yanez, Itzama;Camacho Nieto, Oscar;Yanez Marquez, Cornelio;Uriarte Arcia, Abril Valeria;]]></authors>
		</item>
		<item>
			<title><![CDATA[Hybrid Multiple-Filter-Multiple-Wrapper Method Used for Gene Selection from Biomedical Database.]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502871]]></link>
			<description><![CDATA[In this paper, it is proposed a hybrid multiple-filter/multiple-wrapper method for selection and classification of DNA-microarray data. The wrapper algorithm GA/TS/SVM, combines relevant genes obtained of five data filtering methods, to perform an efficiently guided search of a subset gene of the bases obtained from the DNA-microarray technology. In the experimental results, it is observed that the method GA/TS/SVM works accurately, and achieves a lower classification error rate using a smaller number of selected genes than other methods reported in literature.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502871]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>609</startPage>
			<endPage>615</endPage>
			<fileSize>1009</fileSize>
			<authors><![CDATA[Hernandez, Luis Alberto;Bonilla, Edmundo;Morales, Roberto;Hernandez, Jose Crispin;Diaz, Angel;]]></authors>
		</item>
		<item>
			<title><![CDATA[Intelligent Systems Applied to Computer Engineering Teaching]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502872]]></link>
			<description><![CDATA[Accreditation processes in Engineering in Argentina made evident that management and performance of learning processes should be enforced to achieve standards. Teaching of Fundamentals of Computer Science is part of every Engineering Career but, even at the international level, it had been proved that it is almost impossible to satisfy those standard goals, being the origin of numerous research papers. It had been established that its difficulty resides in a lack of comprehension of scientific conceptual maps because of erroneous mental models, but results based on these ideas are not definitive, at most are only partial diagnostics. This research permits conclude that it is necessary to complement the comprehension of students mental models with a concrete motivation based don virtual and actual robots.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502872]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>616</startPage>
			<endPage>618</endPage>
			<fileSize>386</fileSize>
			<authors><![CDATA[Barto, Carlos;Diaz, Laura C.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Long Distance Data Wireless Link Lab]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502873]]></link>
			<description><![CDATA[This paper shows a lab homework assignment about long distance wireless LAN data links taught as part of a course at the Computer Engineering career at the Universidad Nacional de Tucum??n. Throughout the paper, analytical estimations are discussed first and, based on them, feasibility analysis of the link is carried on. Then, real tests are made on short and long distance radio links and compared, arriving to important conclusions about the homework and the behavior of wireless radio link.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502873]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>619</startPage>
			<endPage>624</endPage>
			<fileSize>803</fileSize>
			<authors><![CDATA[Saade, Sergio;Bilbao, Javier;Lutz, Federico;]]></authors>
		</item>
		<item>
			<title><![CDATA[Modeling and Specifying Requirements for Cyber-Physical Systems]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502874]]></link>
			<description><![CDATA[Cyber physical systems have to do with a strong interaction between the physical world and a computing system, which should be transparent to an external observer. In this paper, an approach for modeling and specifying requirements for these systems is presented. It is called 3D Approach and it is based on the well known 4 Variable Model. The proposed extension intends to tackle the particularities involved in the development of cyber-physical systems by a multidisciplinary team and consequently it emphasizes a practical and applied point of view. The 3D Approach came out as the result of systematizing lessons learned in the design of a biodigester, which allows the anaerobic digestion of biomass for the production of biogas.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502874]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>625</startPage>
			<endPage>632</endPage>
			<fileSize>831</fileSize>
			<authors><![CDATA[Ordinez, Leo;Alimenti, Omar;Rinland, Emilia;Gomez, Marisa;Marchetti, Jorge;]]></authors>
		</item>
		<item>
			<title><![CDATA[Performance Analysis of Interface Bonding and Channel Bonding at Point to Point]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502875]]></link>
			<description><![CDATA[In this research, we have done the experiment by applying interface bonding and channel bonding techniques using Point to Point topology on wireless 802 11n to achieve greater performance of network transmission compare with normal wireless link. Some of parameters are used to measure the performance of the proposed methods, such as delay, jitter, data loss rate and throughput that applied on TCP/UDP protocols. Some of experiment setup such as Different Packet Sizes and Directional Traffic Flows also conducted to measures the capability of proposed methods. The results showed that Channel Bonding has significant throughput improvement when applied at Point to Point connection used wireless 802 11n by optimizing the available bandwidth. Different result is obtained with Interface Bonding where the performance transmission is lower than normal link.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502875]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>633</startPage>
			<endPage>635</endPage>
			<fileSize>431</fileSize>
			<authors><![CDATA[Shidik, Guruh Fajar;Noh, Zul Azri Bin Muhamad;]]></authors>
		</item>
		<item>
			<title><![CDATA[Pertinence in Engineering A student opinion]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502876]]></link>
			<description><![CDATA[The challenges and the new models of higher education make it necessary to reconsider the ties between the State, universities and society. Within this context the Alfa III Project ?? USO I: University, Society and Innovation Improvements in Engineerings education pertinence in Latin America. takes place. This project aims to improve the quality of professional training, which implies pedagogical structures and social pertinence improvement. This paper deals with education in Engineering through some key issues, Institutional strengthening that comes from evaluations and accreditations, and training based on certain competences as an answer to educational needs in the actual century. The paper presents an approach form computer engineering that students from Facultad de Ciencias Exactas, F??sicas y Naturales-UNC-RA.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502876]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>636</startPage>
			<endPage>639</endPage>
			<fileSize>416</fileSize>
			<authors><![CDATA[Guzman, Claudia;Cerato, Adriana;Campaner, Gertrudis;Valeiras, Nora;]]></authors>
		</item>
		<item>
			<title><![CDATA[Process Control as a Source of Integrator Problems for a Differential Equations Course in Bioengineering]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502877]]></link>
			<description><![CDATA[Bioengineering is a multidisciplinary program. With its foundations in basic science, Bioengineering applies different technological principles in order to solve problems in the health area. Mathematics, thanks to its methodological and conceptual insights, is an invaluable tool not only in the education of future bioengineers, but also in their professional activities. However, Mathematics courses represent an obstacle to many engineering students. Enhancing the teaching of Mathematics in this context is a need and a challenge for teachers. In this work, problem-solving activities that were carried out in a Differential Equations course are described. They aimed at fostering both the development of the students learning strategies, and the linking of mathematical concepts and methods to other areas. We focused on the possibility of bridging the gap between Differential Equations and Process Control through integrative problem-solving activities that articulate both perspectives and modes of thought..&#61472;]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502877]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>640</startPage>
			<endPage>645</endPage>
			<fileSize>496</fileSize>
			<authors><![CDATA[Merino, Gabriela A.;Anino, Maria M.;Ravera, Emiliano P.;]]></authors>
		</item>
		<item>
			<title><![CDATA[Rainfall Forecasting Using Sub sampling Nonparametric Methods]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502878]]></link>
			<description><![CDATA[This article presents a comparison of two sub sampling nonparametric methods for designing algorithms to forecast time series from the cumulative monthly rainfall. Both approaches are based on artificial feed-forward neural networks ANNs. The main contribution is to divide the rainfall time series forecasting problem using non-parametric methods by subdivision into stages of smoothing, so in this manner the time series are smoothed in order to simplify the prediction problem. The first case depicts an algorithm to forecast high roughness time series that set the parameters of a nonlinear autoregressive model NAR based on ANNs, which uses as a reference the Hurst parameter associated to the time series. The second case, the methodology consists of generating smoothing time series by sampling the time series data, and each individual time series is associated with a predictor filter. Thus, depending on the data, others time series are obtained by sampling with an increasing interval. For each one of the time series generated, a specific ANN-based filter is adjusted, and each one generates a forecast that is then averaged among other subsamples time series, resulting so in a mix of predictor filters. The results are evaluated on high roughness time series from the Mackey Glass Equation MG and from cumulative monthly historical rainfall data from one geographic location. The results are encouraging; deserve study and investment in implementation effort for the geographical locations of interest]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502878]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>646</startPage>
			<endPage>650</endPage>
			<fileSize>641</fileSize>
			<authors><![CDATA[Pucheta, Julian;Rodriguez Rivero, Cristian;Herrera, Martin;Salas, Carlos;Sauchelli, Victor;]]></authors>
		</item>
		<item>
			<title><![CDATA[Rational Agents for the Test of Rational Agents]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502879]]></link>
			<description><![CDATA[Intelligent agents are seen as a promising technology to deal with the development of complex systems. Aiming at improving the agent performance, the utility function is responsible for mapping a possible state ,or set of state, with a utility degree associated. Although there are some efforts to facilitate the development of agent based systems, little has been done to propose methods and techniques to test these systems. In this work, we propose the conception of an approach that uses rational agents who are able to test others rational agents. More specifically, in addition to the designer of the agent, the approach involves a tester agent, a monitoring agent and one or more agents for representing the task environment of the tested agent. The test result must indicate the performance of the agent and, especially, the goals that are not being met.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502879]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>651</startPage>
			<endPage>657</endPage>
			<fileSize>504</fileSize>
			<authors><![CDATA[Silveira, Francisca Raquel Vasconcels;Campos, Gustavo Augusto Lima;Cortes, Mariela Ines;]]></authors>
		</item>
		<item>
			<title><![CDATA[Representation Systems in the Evolution of Technology]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502880]]></link>
			<description><![CDATA[Technology evolved, in part, by the possibility of accumulation of knowledge supported by several external systems of representation (words, graphs, charts, diagrams). Each system of representation emphasizes an aspect of the object or phenomenon it represents. You can recognize their participation in the possibility of complexity and innovation of the artifactual world, as well as the exchange and backup of technical information. It is reasonable to assume that new modes of perception have affected the ways of interpreting, understanding, and finally, designing and building new technology products..]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502880]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>658</startPage>
			<endPage>663</endPage>
			<fileSize>408</fileSize>
			<authors><![CDATA[Drudi, Susana;Gangoso, Zulma;]]></authors>
		</item>
		<item>
			<title><![CDATA[Signal Processing In Embedded Systems]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502881]]></link>
			<description><![CDATA[The implementation of algorithms by means of signal processors usually lacks a friendly user interface, mainly because of the difficulty involved in their creation and maintenance. One practical solution to this problem, both in education and industry, is the integration of signal processors within embedded systems. This configuration enables a designer to easily implement an interface that does not only allow the visualization of the process, but also admits the possibility of changing parameters in real time.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502881]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>664</startPage>
			<endPage>667</endPage>
			<fileSize>468</fileSize>
			<authors><![CDATA[Dewald, Kevin;Jacoby, Daniel;]]></authors>
		</item>
		<item>
			<title><![CDATA[The need for formal education on Information Security]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502882]]></link>
			<description><![CDATA[Information Security is a critical element in all the organizations today. It represents a whole new specialization, and is not yet covered by our higher educational system, which actually is not providing qualified professionals, despite of the good level of Argentina in information security field, but far from world class educational systems. This work analyzes the importance of information security courses in engineering careers, the big need of the industry, and how the educational system could cover that gap, by including different courses in the study plans, and thinking of the relative relevance that it could have for engineers in their future jobs.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502882]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>668</startPage>
			<endPage>670</endPage>
			<fileSize>438</fileSize>
			<authors><![CDATA[Pacheco, Federico;]]></authors>
		</item>
		<item>
			<title><![CDATA[University and ICT. The case: Race Electromechanical Engineering from National Technological University Faculty San Francisco Regional]]></title>
			<link><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502883]]></link>
			<description><![CDATA[This paper presents the results of a project whose main purpose is to analyze the incorporation of new information technologies and communication in university teaching practices and, to study the transformation that, with regard to teaching methods, came from its use, trying to trace the causes that have led to implement or not these tools. The research was conducted through analysis of a case, opting for this method as a qualitative research strategy designed to capture subjective and objective aspects of reality studied and, as a unit of study we selected all subjects and all the theoretical and practical classes that make up the current curriculum of Electromechanical Engineering degree from National Technological University Faculty San Francisco Regional. The results showed that the remarkable view of the main actors, teachers and students, was the incorporation of technology in teaching in university classrooms. These results provide information for policy makers interested in developing or modifying curricula taking into account the use of these tools in the teaching.]]></description>
			<pubDate><![CDATA[Feb.  2013]]></pubDate>
			<guid><![CDATA[http://null/xpl/articleDetails.jsp?arnumber=6502883]]></guid>
			<volume>11</volume>
			<issue>1</issue>
			<startPage>671</startPage>
			<endPage>676</endPage>
			<fileSize>440</fileSize>
			<authors><![CDATA[Neira, Rodolfo;]]></authors>
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