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# IEEE Latin America Transactions

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Displaying Results 1 - 10 of 10
• ### Computational Technique to UPML Absorbing Boundary Conditions by FDTD: A Complete Approach

Publication Year: 2005, Page(s):1 - 6
Cited by:  Papers (1)
| | PDF (409 KB)

Visual servoing concerns several fields of research including vision systems, robotics and automatic control. Visual servoing can be useful for a wide range of applications and it can be used to control many different dynamic systems (manipulator arms, mobile robots, autonomous underwater vehicles, aircraft, etc.). However, visual servoing systems are not complete efficiency due to the numerous pr... View full abstract»

• ### Modeling and Simulation of Active Node

Publication Year: 2005, Page(s):7 - 13
| | PDF (500 KB)

Active Networks (ANs) was founded to insert programmability in the intermediate part of the IP Network, in order to improve both the flexibility and performance of the Network through dynamic insertion of both servicios and protocols. This paper describes the activity of simulation performed in the Active Network DistRibuted Open Infrastructure Development project (ANDROID). In ANDROID an infrastr... View full abstract»

• ### System Based on Computational Intelligence for Ophthalmology Image Understanding

Publication Year: 2005, Page(s):14 - 22
| | PDF (487 KB)

In this project a computational system of images analysis was developed based on machine learning techniques to aid the diagnosis in the optometry area, particularly, an objective and automatic system of ocular refraction errors measurement (astigmatism, hypermetropia and short-sightedness). The results of the work suggest a way to improve the images interpretation from the acquisition technique... View full abstract»

• ### Analysis and Comparison of Multimedia Inter-stream and Group Synchronisation Algorithms

Publication Year: 2005, Page(s):23 - 32
Cited by:  Papers (2)
| | PDF (946 KB)

In this paper an analysis and comparison of multimedia synchronisation algorithms is presented. After presenting the three types of multimedia synchronisation (intra-stream, inter-stream and group synchronisation), only inter-stream and group synchronisation algorithms are considered. The main synchronisation techniques included in most of the analysed algorithms have also been classified. Finally... View full abstract»

• ### CO2 Laser Capacitive-excited with Radio Frequency of 450 kHz

Publication Year: 2005, Page(s):33 - 38
Cited by:  Papers (2)
| | PDF (559 KB)

The present work described the build and characterization of a CO2 laser excited with a capacitive electric discharge of radio frequency of 450 kHz. The system used two external electrodes cooled with water and the discharge is product in a gas flow of 75 m/s, with a mixture gas of CO2:N2:He with proportion of 1:10.2:11.5 and 45 mbar of pressure. The discharge tube is of 22 mm of internal diameter... View full abstract»

• ### Analysis of Performance of Adjustable-Speed Drives during Voltage Sags

Publication Year: 2005, Page(s):39 - 46
Cited by:  Papers (1)
| | PDF (501 KB)

The induction motors are the most common electric machines on industrial systems and with extended applications when adjustable speed drives (ASD) are used. The speed drives are based on power electronic devices and therefore they are highly sensitive to electric disturbances such as voltage sags, interruption, etc. Voltage sags has become one of most common power quality problems in the electrica... View full abstract»

• ### Coherent Demodulation of the Output Signal of Optical Voltage Transformer

Publication Year: 2005, Page(s):47 - 52
Cited by:  Papers (1)
| | PDF (493 KB)

This work addresses a technique of coherent demodulation based on the synchronous detection of peak and valley values of the photocurrent produced by a photodiode connected through an optical fiber to the output of a recover interferometer, which is part of an Optical Voltage Transformer (OVT). The adopted OVT topology allows the recover interferometer output signal to hold the relevant informatio... View full abstract»

• ### Analysis of the Harmonic Distortion and the Effects of Attenuation and Diversity in Residential Areas

Publication Year: 2005, Page(s):53 - 59
Cited by:  Papers (2)
| | PDF (373 KB)

This work analyzes the waves of currents in residential loads, evaluating the effects of attenuation and diversity in the cancellation of harmonics, pondering their influence in the prediction of distortion indexes in a distribution system. Starting from signals of currents registered in laboratory and subsequently treated with Fast Fourier's Transformation, the loads were modeled like sources of ... View full abstract»

• ### A new Bandwidth Estimation Approach for Fractal Processes

Publication Year: 2005, Page(s):60 - 70
Cited by:  Papers (1)
| | PDF (609 KB)

Recent extensive traffic analyses carried out over different network technologies have shown network traffic in its "monofractal" or "multifractal" nature as well as in its impact on network performance. Based on the results of these "monofractal" and "multifractal" traffic studies we introduce a new traffic parameter, capable of simultaneously expressing both "monofractal" and "multifractal" char... View full abstract»

• ### Generating Ensemble of Classifiers through Unsupervised Feature Selection

Publication Year: 2005, Page(s):71 - 77
Cited by:  Papers (1)
| | PDF (433 KB)

In this paper we propose a strategy to create ensemble of classifiers based on unsupervised features selection. It takes into account a hierarchical multi-objective genetic algorithm that generates a set of classifiers by performing feature selection and then combines them to provide a set of powerful ensembles. The proposed method is evaluated in the context of handwritten month word recognition,... View full abstract»

## Aims & Scope

IEEE Region 9 provides IEEE Latin America Transactions to enable the publication of non-published and technically excellent papers from Latin American engineers, in Spanish or Portuguese languages.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Mirela Sechi Moretti Annoni Notare
mirela@ieee.org
+55(48)9981-4823