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Feature selection based on binary particle swarm optimization and neural networks for pathological voice detection

Feature selection based on binary particle swarm optimizatio...

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Latin America Congress on Computational Intelligence (LA-CCI)

作者： Taciana A. Souza Micael A. Souza Washington C. de A. Costa Silvana C. Costa Suzete E. N. Correia Vinícius J. D. Vieira Academic Unity of Industry Federal Institute of Education Science and Technology of Paraíba João Pessoa Brasil Academic Unity of Industry Federal Institute of Education Science and Technology of Paraíba João Pessoa Brasil Electrical Engineering Post-graduation Program Federal University of Campina Grande João Pessoa Brazil Universidade Federal de Campina Grande Campina Grande PB BR

Laryngeal pathologies directly affect the quality of the voice. In the last years, digital signal processing techniques have been applied for detection of vocal fold pathologies through speech signal analysis. In this work, a binary Particle Swarm Optimization (PSO) algorithm using Multilayer Perceptron (MLP) neural network is employed for the selection of the most significative features in a pathological voice detection system. The discrimination between healthy and pathological speech signals are obtained by 52 Haralick texture features, extracted from two-dimensional wavelet coefficients of the speech signals recurrence plots. The fitness function adopted is based in the maxima accuracy rate. Experimental results show that the use of PSO increased the accuracy rates with a minimum number of features.

关键词： Feature extraction Speech Pathology Wavelet transforms Particle swarm optimization Neural networks

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RepoSDN: An repository organization and coordination method of software defined networks applications

RepoSDN: An repository organization and coordination method ...

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IEEE Symposium on Network Operations and Management

作者： Rômulo S. Pinheiro Billy A. Pinheiro Rafael P. Esteves Antônio J. G. Abelém Computer Science Post-graduation Program (PPGCC) Federal University of Pará (UFPA) Electrical Engineering Post-graduation Program (PPGEE) Federal University of Pará (UFPA) Federal University of Rio Grande do Sul (UFRGS)

ISBN: (纸本)9781479909117

programmability is one of the key factors on software defined networks (SDN), once it allows to decouple between data plan and control plan. However, in such context, managing several applications' inputs and outputs is a little explored task on controllers field, which are not in a controlled and organized environment. This article proposes a method to make SDN applications to reach the administrator, allow him to manage his use in the network. This proposal is validated through performance tests in the repository, which stores the applications, along with developed modules to help its management and control, making the organization and coordination method safe, efficient and adjustable to any controller on software-defined network.

关键词： Software Computer architecture Organizations Servers Hardware Process control Standards organizations

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Specific absorption rate (SAR) in the head of Google glasses and Bluetooth user's

Specific absorption rate (SAR) in the head of Google glasses...

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IEEE Latin-American Conference on Communications, LATINCOM

作者： Y. A. A. Pizarro A. A. de Salles S. Severo J. L. T. Garzón S. M. R. Bueno Post-graduation program in electrical engineering Federal University of Rio Grande do Sul Porto Alegre RS Brazil

Two popular wireless communication devices are considered in this paper. Firstly, the Bluetooth which is one of the most popular mobile accessories and the Google glasses which are a representation of the new futuristic vision. It is well known that the absorption of electromagnetic waves on the human head for a certain period of time may lead to health problems such as headaches, or even worse, brain cancer. The Specific Absorption Rate (SAR) is simulated for three different head models and compared with the available international recommendations. The first model used is the Specific Anthropomorphic Mannequin (SAM phantom), as well as two realistic models of human head (i.e., a 34 years old adult and a 10 years old child). The simulations were performed using the finite difference time domain (FDTD) method and the frequency used to feed the antennas was 2.45 GHz.

关键词： Google Antennas Glass Bluetooth Phantoms Magnetic heads Head

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Methodology proposal for multicriteria optimization using NSGA-II in industrial applications

Methodology proposal for multicriteria optimization using NS...

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IEEE/IAS International Conference on Industry Applications (INDUSCON)

作者： A. O. Castro U. H. Bezerra J. C. Leite M. S. S. Azevedo Post Graduation Program in Electrical Engineering - PPGEE Federal University of Para - UFPA Belém Pará Brazil Galileo Technology Institute of Amazon - ITEGAM Manaus Amazonas Brazil

The optimization problems of industrial process attracted many researches since the early 90's of the last century. The production volume increase, lifespan shorten of the products and technological advances pushed the industries to seek for low cost and quick implementation solutions. One of the processes that became the core for increasing the sales volumes was the Surface Mount Technology - SMT composed by printing, automated chip mounting and reflow which replaced the Through Hole Technology - THT. This paper formulated a new point of view for modular chip mounters based on the already known feeder assignment problem and head motion problem applying the global optimization using the nonsorting dominance genetic algorithm the NSGAH in regard of the total cycle time reduction. The modeling of the fitness functions were presented and the multi criteria optimization tool was described using the machine functions and constraints. The same method could be applied to describe other type of machines to support future research.

关键词： Optimization Sociology Statistics Magnetic heads Genetic algorithms Linear programming Head

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Empirical ARMA Outdoor Propagation Model for Amazon Cities

Empirical ARMA Outdoor Propagation Model for Amazon Cities

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European Conference on Antennas and Propagation

作者： Ramz L. Fraiha Lopes Allan B. Costa Allan S. Braga Herminio S. Gomes Simone G. C. Fraiha Josiane C. Rodrigues Jasmine P. L. Araujo Bruno S. L. Castro Gervasio P. S. Cavalcante Institute of Technology - Electrical Engineering Post Graduation Program Federal University of Para - UFPA

In this work is proposed an empirical Autoregressive Moving-Average (ARMA) model for signal strength prediction in outdoor environments. A Genetic Algorithm (GA) was employed to calibrate the model (finding coefficien... 详细信息

ISBN: (纸本)9781467321877

关键词： ARMA model Outdoor Propagation Genetic Algorithm Genetic Algorithm (GA) Source code city Outdoors OUTDOOR ENVIRONMENT Signal Intensity

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A multicriteria approach for meter placement in distribution systems

A multicriteria approach for meter placement in distribution...

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10th International Conference on the European Energy Market, EEM 2013

作者： Milbradt, Rafael G. Canha, Luciane N. Zorrilla, Pedro B. Abaide, Alzenira R. Pereira, Paulo R. Schmaedecke, Sandro M. Post-Graduation Program in Electrical Engineering Federal University of Santa Maria UFSM Santa Maria Brazil State Company of Electric Power Distribution of Rio Grande Do sul - CEEE-D Porto Alegre Brazil

ISBN: (纸本)9781479920082

One of the principles of Smart Grids is to have a communication network that will integrate equipment allowing the monitoring and operation to be performed in real time in order to improve the quality indicators. However, this migration to an automated and monitored environment will demand many resources that will be used to perform the migration gradually. Therefore, this work proposes a methodology for allocation of meters with the function of improving the accuracy of state estimation algorithms, but also considering other selection criteria, given the fact that many of automation equipment such as reclosers, automated switches, voltage controllers also perform the function of meters. The paper demonstrates the implementation of a state estimator based on the WLS method, which serves as the basis for the analysis of quantitative criteria such as the accuracy of the estimator, losses, voltage levels and reliability. Thus, the criteria are analyzed considering the needs defined by experts through the Analytic Hierarchy Process, so alternatives of locations and equipment can be prioritized. Finally, the methodology is demonstrated by experimental evaluation on a real feeder. © 2013 IEEE.

关键词： State estimation

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Empirical ARMA Indoor Propagation Model for WLAN Signals in 2.4GHz

Empirical ARMA Indoor Propagation Model for WLAN Signals in ...

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European Conference on Antennas and Propagation

作者： Ramz L. Fraiha Lopes Allan B. Costa Herminio S. Gomes Nadson W. P. Souza Bruno W. Martins Gervasio P. S. Cavalcante Institute of Technology - Electrical Engineering Post Graduation Program Federal University of Pará - UFPA Belém - PA Brazil

ISBN: (纸本)9781467321877

Representing the signal power at a studied environment through a mathematical model is one major challenge of signal propagation study. In this work is proposed an empirical Autoregressive Moving-Average (ARMA) model for signal strength prediction in indoor environments. A Genetic Algorithm (GA) was employed to calibrate the model (finding coefficients), thus, allowing future improvements without major changes to the program source code.

关键词： WLAN ARMA model Indoor Propagation Genetic Algorithm wireless local area network (WLAN) Genetic Algorithm (GA) Source code signal power propagation Propagation signals INDOORS

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Development of an intelligent virtual environment applied to mastology for diagnosis and training

Development of an intelligent virtual environment applied to...

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International Conference on Computer Medical Applications (ICCMA)

作者： Jaclason Machado Veras Sofiane Labidi Nilson Santos Costa Thiago Pinheiro Agricultural School of Teresina - CAT Federal University of Piaui - UFPI Teresina Brazil Post-graduation Program in Electrical Engineering Federal University of Maranhão - UFMA São Luís Brazil Post-graduation Program in Electrical Engineering Federal University of Maranhão - UFMA São Luís Brazil

This paper aims to present a proposal for developing an intelligent virtual environment based on multi-agent systems, neural networks, ontology and Fourier transform. Its main purposes are training professionals of health field through e-learning and the diagnosis of diseases affecting mammary glands, providing an improvement in conditions of diagnostics in the medicine area.

关键词： Training Ontologies Virtual environments Neural networks Diseases Breast cancer

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A multicriteria approach for meter placement in monitoring of smart distribution systems

A multicriteria approach for meter placement in monitoring o...

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International Universities Power engineering Conference (UPEC)

作者： Rafael G. Milbradt Luciane N. Canha Pedro B. Zorrilla Alzenira R. Abaide Paulo R. Pereira Sandro M. Schmaedecke Post-Graduation Program in Electrical Engineering Federal University of Santa Maria-UFSM Santa Maria Brazil State Company of Electric Power Distribution of Rio Grande do Sul CEEE-D Porto Alegre Brazil

关键词： Indexes State estimation Accuracy Monitoring Measurement uncertainty Reliability Investment

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T-slot PIFA with excitation of the ground plane resonant modes and considerations of the interaction between antenna, mobile handset and user's head

T-slot PIFA with excitation of the ground plane resonant mod...

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SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics (IMOC)

作者： J. L. T. Garzon A. A. de Salles A. C. O. Pedra S. Severo Post-Graduation Program in Electrical Engineering Federal University of Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil Technology College SENAI National Service of Industrial Education Porto Alegre Rio Grande do Sul Brazil

ISBN: (纸本)9781479913961

This paper presents a T-slot planar inverted F antenna (PIFA) for wireless mobile communications GSM/UMTS/WCDMA systems. A modified ground plane is used to increase the bandwidth. A prototype is implemented and the differences in performance of the antenna with and without the presence of the mobile handset and the user's head are estimated. The simulations are performed using the finite difference time domain (FDTD) method.

关键词： Antennas Multiaccess communication Spread spectrum communication Antenna measurements Finite difference methods Time-domain analysis Microphones

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