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Electrical Communications and Computers (CONIELECOMP), 2012 22nd International Conference on

Date 27-29 Feb. 2012

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  • [Front cover]

    Publication Year: 2012 , Page(s): c1
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  • Welcome

    Publication Year: 2012 , Page(s): 1
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  • Foreword

    Publication Year: 2012 , Page(s): 1
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  • Acknowledgements

    Publication Year: 2012 , Page(s): 1
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  • Committee

    Publication Year: 2012 , Page(s): 1 - 5
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  • Organizing Committee

    Publication Year: 2012 , Page(s): 1
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  • Keynote speakers

    Publication Year: 2012 , Page(s): 1 - 5
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    These keynote speeches discuss the following: design of analog integrated circuits in submicrometer technologies; the role of interactive digital resources in mathematics education and research; probabilistic reasoning in answer set programming- the P-log approach; and service robots. View full abstract»

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  • Tutorials

    Publication Year: 2012 , Page(s): 1
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    Provides an abstract for each of the tutorial presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • CONIElECOMP2012 [Table of contents]

    Publication Year: 2012 , Page(s): 1 - 22
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  • Author index

    Publication Year: 2012 , Page(s): 1 - 6
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  • Performance comparison of three topologies of the island model of a parallel genetic algorithm implementation on a cluster platform

    Publication Year: 2012 , Page(s): 1 - 6
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (844 KB) |  | HTML iconHTML  

    Parallel genetic algorithms (PGAs) have been used to improve the potential of genetic algorithms, which are efficient search techniques that have been employed in producing satisfactory solutions to optimization problems in which the application of standard techniques is not feasible or recommended. We implemented three communication topologies of the island model of a PGA, with the aim of analyzing the performance of the migration models applied. The topologies implemented were the star, the unidirectional ring and the bidirectional ring topologies. The implementation was developed on a cluster platform through the use of the standard Message Passing Interface (MPI) library. In order to test the performance of the algorithm with its variants, well-known benchmark functions were used. View full abstract»

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  • MOGARS: Multi-objective genetic algorithm for the discovery of regulatory sequences

    Publication Year: 2012 , Page(s): 7 - 11
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (818 KB) |  | HTML iconHTML  

    This paper proposes the use of a multi-objective approach to discover regulatory sequences using genetic algorithms. Since regulatory sequences have different features, a multi-objective approach seems pertinent and a viable way. The variables to maximize with it are: similarity, length, support, and a weight matrix intended to achieve a guided search. We validated our proposal in a database of the Bacillus Subtilis bacteria. Our experimental results were considered as valuable discoveries by domain experts. View full abstract»

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  • Development of analytical abilities and collaborative learning assessment in undergraduate students through simulation games

    Publication Year: 2012 , Page(s): 12 - 16
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (694 KB) |  | HTML iconHTML  

    Business simulations have been used as effective educational environments that allow students to develop thinking and learning skills. Some of these environments have the characteristic of allowing geographical disperse teams to interact in an e-learning setting. The objective of this paper is to comparatively analyze the effect of this e-learning experience in the improvement of collaboration and analytical skills of the students who participate in the Carnegie Mellon business simulator in the UDLAP, comparing them with students that did not participated in the simulation game. The research was conducted using a quasiexperimental design with two non-random groups and only a post-test. According to this research, there's evidence to conclude that Carnegie Mellon Simulation is not a determining factor to develop abilities of collaboration learning and analysis capacity in the students that participate. View full abstract»

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  • Managing semantic-based forestry information via web

    Publication Year: 2012 , Page(s): 17 - 21
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (903 KB) |  | HTML iconHTML  

    Among the services provided by Internet, intelligent access to information resources (IRs) seems necessary, in order to contribute to decision-making. Information management systems should recognize and register the contents of IRs for storage and treatment purposes due to their exponential appearances in the web; therefore it is necessary to develop systems that consider the contents of IRs whether they are stored locally or remotely. This paper describes an approach for managing heterogeneous IRs using forestry resources as case study. The approach builds a semantic forest memory for which a prototype system to validate results has been implemented. View full abstract»

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  • Evaluation of a parallel approach implementation of the p-stable semantics

    Publication Year: 2012 , Page(s): 22 - 27
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (714 KB) |  | HTML iconHTML  

    In this paper we review some results about a parallel p-stable solver. We test an algorithm that searches for the p-stable models of a normal program based on stratification of logic programs. View full abstract»

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  • Organic nanopatch device improves sleep and enhances vital organ function

    Publication Year: 2012 , Page(s): 28 - 33
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1150 KB) |  | HTML iconHTML  

    Actigraphic measurements depicting movement during sleep, tissue bioimpedance images of different organs reflecting their physiological functional status, Leeds Sleep Evaluation Questionnaire as well as sleep diary data reflecting subjective self-evaluation of sleep were collected from 20 volunteers [5 males and 15 females, 20-79 (55 ± 12) years of age, 105-235 lbs (158 ± 36) in weight, and 5 - 6.4 ft (5.5 ± 0.3) in height] over a period of 3 weeks at baseline and at the end of each week afterwards. Baseline data were acquired from all subjects at the beginning of the study period before wearing an organic nanopatch device: the Silent Nights patch. After one week of accommodation to wearing the Actiwatches, Silent Nights patch was applied to the right temple 1 hour before sleep each night and worn throughout the night for 2 weeks. Subjects were instructed to keep well hydrated during the study period. All subjects served as their own control. The effects of Silent Nights patch on qualitative and quantitative measures of sleep were evaluated and the impact of quality of sleep on organ function was analyzed. The hypothesis to be tested was: The Silent Nights patch worn throughout the night for 2 weeks improves cellular physiologic functional status of different parts of the brain, cardiac ventricles, adrenal glands, and thyroid gland. The overall data in this pilot investigation demonstrated that this intervention produced considerable improvements in the objective and subjective measures of sleep and resulted in enhancement of physiological functional status of the brain, adrenal glands, cardiac ventricles, and thyroid gland. View full abstract»

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  • Software for inverse voltage calculations in the heart's surface

    Publication Year: 2012 , Page(s): 34 - 39
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1167 KB) |  | HTML iconHTML  

    This article shows the creation of a software that allows simulating the voltage in the epicardium by using inverse problems theory, and Tikhonov regularization. The software takes a mesh file containing two surfaces (heart and thorax) and calculates a transfer matrix using the volume conductor model. Then, with the selection of the Tikhonov regularization parameter gives a possible heart voltage distribution for a given data in the thorax. View full abstract»

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  • Design and construction of phototherapy system with temperature control

    Publication Year: 2012 , Page(s): 40 - 44
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1217 KB) |  | HTML iconHTML  

    In the application of phototherapy if the power density of the incident light is too high to induce a significant rise in target tissue temperature an state of localized hyperthermia can be induced which can match with phototherapy effects. This paper presents the development of phototherapy system with temperature control. The system allows the application of optical radiation at a wavelength of 630 nm, using light-emitting high power diodes. The developed system has a power control to irradiate the target tissue with an adequate power density. Also, the irradiation time it is automated. A temperature sensor is placed in the irradiated sample to control the temperature. This temperature control control allows the study of photodynamic therapy effects in synergy with the thermotherapy effects in the treatment of different diseases in external tissue. View full abstract»

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  • Experimental tests in tissue phantoms of a photoirradiation system with optical dosimetry for photodynamic therapy

    Publication Year: 2012 , Page(s): 45 - 49
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (838 KB) |  | HTML iconHTML  

    Photodynamic therapy involves the administration of a photosensitizer drug followed by a local illumination with light of specific wavelength. In the presence of oxygen molecules, the light illumination of photosensitizer can activate the production of reactive oxygen species which produce the death of malignant cells. Light dose is an important factor for reach an effective therapy. In this work it is presented an irradiation system which allows the application of radiation at 630 nm for 5-AminoLevulinic Acid superficial Photodynamic Therapy using as a light source, a light emitting diode and an automatic control of output optical power using the results of a model of distribution of radiation in depth for different optical properties. The system was tested in tissue phantoms which allow a more controlled environment than test in vivo or in vitro. View full abstract»

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  • The effects of blood glucose changes on frequency-domain measures of HRV signal in type 1 diabetes

    Publication Year: 2012 , Page(s): 50 - 54
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (986 KB) |  | HTML iconHTML  

    The analysis of time duration between consecutive R waves of electrocardiogram (ECG) is a standard method to evaluate the variations in heart rate. The physiological literature reveals that blood glucose levels modulate the autonomic nervous system (ANS) activity and heart rate variability (HRV) is representative of the cardiovascular autonomic function. In the research described here, a pilot investigation was carried out to investigate the relationship between HRV signal measures derived from ECG and arterial blood glucose changes in a female subject with type 1 diabetes mellitus (T1DM) subject during normoglycemic and mildly hyperglycemic conditions. A CleveLabs BioCapture wireless device was used to acquire ECG signals from a 160 Kg, 59.6 year old female volunteer with type 1 diabetes. The PhysioToolkit Software was used to extract the HRV signal and the Kubios software package was deployed to perform comprehensive HRV signal analysis. This software has an easy-to-use graphical user interface that displays the HRV signal and provides three options to calculate: Time-domain, Frequency-domain and Nonlinear Dynamics parameters from raw HRV signals. In its Frequency-domain analysis section, it provides frequency bands such as VLF (Hz), LF (Hz), and HF (Hz), with LF/HF as an index that reflects the sympathovagal balance of the ANS. ECG data were acquired for 30 minutes during normoglycemic condition and for another 30 minutes during mildly hyperglycemic conditions, while blood glucose levels were measured manually by the subject using a glucometer every 5 minutes. ECG signal segments of 5 minute durations were then processed to extract HRV signals and these in turn were analyzed to provide frequency-domain measures. The results indicated that blood glucose changes were inversely related to LF/HF. For this dataset, it was observed that mean ± std of the LF/HF decreased from 6.0 ± 1.04 to 0.91 ± 0.17 when blood glucose levels increased from 156- ± 22 mg/dl to 202 ± 29 mg/dl. Further investigation is underway to recruit more diabetic subjects to acquire a large dataset and explore the relationships between different HRV signal parameters and blood glucose changes under different gylcemic conditions in a comprehensive way. View full abstract»

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  • A remote monitoring system for a mechanotherapy device in neuromuscular rehabilitation

    Publication Year: 2012 , Page(s): 55 - 58
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (775 KB) |  | HTML iconHTML  

    Motor disability is one of the most pressing health issues, that is why there is a great interest in the development of tools helping patients who suffer a temporary disability to have a proper rehabilitation, otherwise could result in a permanent disability of the patient. Mechanotherapy is one of the most common therapies and the pulleys apparatus is one of the most used tools due to their effectiveness and versatility. However it is based purely with mechanical elements. The developed system allows to monitoring the pulleys apparatus during a rehabilitation sessions at the same time that records the evolution of patient in a virtual environment. View full abstract»

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  • Data Rate Reduction (DRR) as Fading Mitigation Technique for a wideband channel

    Publication Year: 2012 , Page(s): 59 - 64
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (960 KB) |  | HTML iconHTML  

    In this paper we present the results obtained to implement the Fading Mitigation Technique (FMT) by variable transmission rate (DRR) for a communication link through a multi-tap wideband channel model. The system is considered as a random process so that the data rate inside the mitigation algorithm is switching by the variable component with respect to time of the received symbols. The channel model consists in a multi-tap transversal filter on an urban environment. Inside the paper, we make a comparison of the results of BER (Bit Error Rate) according to the variation of the Signal to Noise Ratio (SNR) and the Eb/N0 obtained in the switching of rate with the wideband channel and an AWGN channel as reference. View full abstract»

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  • Design of an array based on an antipodal balanced Vivaldi antenna

    Publication Year: 2012 , Page(s): 65 - 69
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1441 KB) |  | HTML iconHTML  

    Due to the many breakthroughs in the field of based pulse radars and ultra wide bandwidth (UWB) systems, researches of every component of those systems have been performed in recent years. As well as, in order to match the great bandwidth that pulse-based radar needs to optimally work, UWB antennas were developed for this purpose. In this paper an array based on an antipodal balanced Vivaldi antenna is studied by simulating firstly a unique Vivaldi antenna element and analyzing its return loss, gain, etc. Then a five element antenna array was built in the HFSS simulator. The gain, as it was expected, has been increased to be closed to 16 dBi and maintaining the good S11 performance of one single Vivaldi antenna. View full abstract»

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  • Voice communication through the internet for mobile devices

    Publication Year: 2012 , Page(s): 70 - 73
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (822 KB) |  | HTML iconHTML  

    We developed an application to transmit voice through the Internet for communication of mobile devices in real time. It is explained the way of configuring a server and the clients (mobile terminals) for voice transmission over IP. The server is in charge of the system administration and the establishment and control of the proper connections to the clients. The clients are provided with the necessary programs to interact with the server. This application enhances the functionality of mobile devices without an extra cost of the service. View full abstract»

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  • Acceleration of the reflectance field acquisition using independent component analysis

    Publication Year: 2012 , Page(s): 74 - 79
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3922 KB) |  | HTML iconHTML  

    In order to generate photorealistic images, a central problem in computer graphics is the description of an object reflectance model. The reflectance field technique describes the object surface properties and can be used for photorealistic rendering. The reflection of surfaces can be described as a high dimensional reflectance function. For complex surfaces, an analytical model is not always easy to formulate, therefore the direct real-world surface acquisition is preferred. The reflectance is typically acquired with a camera or array of cameras that capture the reflectance field of the object surface but the reflectance information can be composed of thousands of images, depending on the surface material properties and the camera resolution. In this work we proposes a systematic strategy that incorporates Independent Component Analysis (ICA) to acquire the reflectance field and reducing by orders of magnitude the required number of captured images and keeping the same reflectance field quality. In our experiments, a reflectance field can be obtained with only 26 images, compared to the classical approach that require thousands of images, with an error less than 2%. View full abstract»

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