Conference Presentations by Carlos Raimundo Erig Lima
This work describes the implementation of an environment for simulating control systems based on ... more This work describes the implementation of an environment for simulating control systems based on the reconfigurable logic that can be used for supporting undergraduate engineering students. This environment aims at supplying the requirements
found in the academy, as well as in industrial applications, for open systems, easily adapted to other specifications, and with accessible cost and large processing power. By exploring modularity in reconfigurable logic, it is possible to adapt the system to new project requirements.
Papers by Carlos Raimundo Erig Lima
A comparison of FPGA and FPAA technologies for a signal processing application
Departamento de Engenharia Elétrica, Universidade Positivo Rua Prof. Pedro Viriato P. de Souza, 5... more Departamento de Engenharia Elétrica, Universidade Positivo Rua Prof. Pedro Viriato P. de Souza, 5300 - 81280-330 - Curitiba (PR) - Brazil [email protected] ... Heitor S. Lopes, Carlos R. Erig Lima ... Departamento de Eletrônica, Universidade Tecnológica Federal do ...
Computing and Informatics / Computers and Artificial Intelligence, Jan 26, 2012
Multiple sequence alignment is a central topic of extensive research in computational biology. Ba... more Multiple sequence alignment is a central topic of extensive research in computational biology. Basically, two or more protein sequences are compared to evaluate their similarity and to identify conserved regions. This work reports a methodology for parallel processing of a multiple sequence alignment algorithm (ClustalW) in an environment of networked computers. A detailed description of the modules that compose the distributed system is provided, giving special attention to the way a dynamic programming algorithm is run in multilevel parallelism. Extensive experiments were done to evaluate performance and scalability of the reported method. Results suggest that the proposed method is very promising for large-scale multiple protein sequence alignment.
The design of controllers in multi-variable systems represents a complex problem due to several c... more The design of controllers in multi-variable systems represents a complex problem due to several controlled variables not mutually independent. Traditional techniques based on variables decoupling have limitations that encourage the use of Evolutionary Computation (EC) methods. This work compares the performance of PID controllers tuned using Genetic Algorithms (GA) and Particle Swarm (PSO) with other related works in the literature. A classical model of two inputs and two outputs is used for simulation and comparison. The simulation results using EC methods, especially the PSO-based, approach showed a better performance than other relevant works described in literature.
Resumo -Do ponto de vista computacional, a modelagem e simulac ¸ão de reverberac ¸ão artificial é... more Resumo -Do ponto de vista computacional, a modelagem e simulac ¸ão de reverberac ¸ão artificial é uma tarefa bastante difícil que requer grande capacidade computacional. Este trabalho objetiva investigar a aplicabilidade de Algoritmos Genéticos (AG) para ajustar os parâmetros de um modelo de reverberador artificial recursivo. É apresentada uma descric ¸ão detalhada da metodologia empregada no problema, bem como os critérios de simplificac ¸ão para torná-lo computacionalmente viável. A Curva de Decaimento de Energia (CDE) é utilizada para medir a similaridade perceptual entre a resposta do modelo e a resposta ao impulso de uma sala real onde ocorre a reverberac ¸ão, como parte da func ¸ão de fitness do AG. Os resultados dos experimentos mostraram que o modelo proposto, juntamente com o AG, foram capazes de gerar uma CDE significativamente próxima da CDE correspondente à região de reverberac ¸ão tardia da sala real. Palavras-chave -Algoritmo genético, reverberac ¸ão, áudio, processamento de sinais.
Preliminary Steps Towards Protein Folding Prediction Using Reconfigurable Computing
Page 1. Preliminary Steps Towards Protein Folding Prediction Using Reconfigurable Computing 1 Nil... more Page 1. Preliminary Steps Towards Protein Folding Prediction Using Reconfigurable Computing 1 Nilton B. Armstrong Jr., Heitor S. Lopes, Carlos R. Erig Lima Bioinformatics Laboratory (CPGEI) & Electronics Department Federal University of Technology – Paraná Av. ...
Tools based on Machine Learning methods have been widely used in the bioinformatics, mainly in th... more Tools based on Machine Learning methods have been widely used in the bioinformatics, mainly in the construction of classifiers. Detection of genes is still an open problem. Identifying the promoter region laying prior the gene itself is an impor- tant aid to detect a gene. This paper aims at comparing several Machine Learning methods applied to the construction of classifi-
Construction and improvement heuristics applied to the capacitated vehicle routing problem
2009 World Congress on Nature & Biologically Inspired Computing (NaBIC), 2009
The capacitated vehicle routing is a problem of combinatorial optimization that has aroused major... more The capacitated vehicle routing is a problem of combinatorial optimization that has aroused major interest because it is present in various areas (logistics, transport and other) and, it is a problem of considerable difficulty. There are currently various techniques that have been developed to try to solve this problem efficiently. In this article, we present a solution to this problem
A study of topology in insular Parallel Genetic Algorithms
2009 World Congress on Nature & Biologically Inspired Computing (NaBIC), 2009
Page 1. A Study of Topology in Insular Parallel Genetic Algorithms Leonardo G. Tavares Department... more Page 1. A Study of Topology in Insular Parallel Genetic Algorithms Leonardo G. Tavares Department of Electrical Engineering Positivo University Rua Prof. Pedro Viriato P. de Souza, 5300 81280-330, Curitiba (PR), Brazil [email protected] ...
Implementation of a Parallel Algorithm for Protein Pairwise Alignment Using Reconfigurable Computing
2006 IEEE International Conference on Reconfigurable Computing and FPGA's (ReConFig 2006), 2006
Page 1. Implementation of a Parallel Algorithm for Protein Pairwise Alignment Using Reconfigurabl... more Page 1. Implementation of a Parallel Algorithm for Protein Pairwise Alignment Using Reconfigurable Computing Guilherme L. Moritz, Cristiano Jory, Heitor S. Lopes, Carlos R. Erig Lima Bioinformatics Laboratory (CPGEI) & Electronics ...
Reconfigurable Hardware Computing for Accelerating Protein Folding Simulations Using the Harmony Search Algorithm and the 3D-HP-Side Chain Model
Lecture Notes in Computer Science, 2011
Simulation of the Dynamic Behavior of One-Dimensional Cellular Automata Using Reconfigurable Computing
Lecture Notes in Computer Science
Page 1. Simulation of the Dynamic Behavior of One-Dimensional Cellular Automata Using Reconfigura... more Page 1. Simulation of the Dynamic Behavior of One-Dimensional Cellular Automata Using Reconfigurable Computing Wagner R. Weinert, César Benitez, Heitor S. Lopes⋆, and Carlos R. Erig Lima Bioinformatics Laboratory ...
An Electric Energy Quality Meter Using Hardware Reconfigurable Computing
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006
Page 1. 0-7803-9514-X/06/$20.00 ©2006 IEEE ICIEA 2006 An Electric Energy Quality Meter Using Hard... more Page 1. 0-7803-9514-X/06/$20.00 ©2006 IEEE ICIEA 2006 An Electric Energy Quality Meter Using Hardware Reconfigurable Computing Angelo Hafner1,2, Carlos R. Erig Lima 1, Heitor S.Lopes1 1 Federal Technological University of Paraná Av. ...
Multiple Sequence Alignment Using Reconfigurable Computing
Lecture Notes in Computer Science
RITA, 2021
The parallelism allowed by FPGAs has attracted attention for knowing applications that need proce... more The parallelism allowed by FPGAs has attracted attention for knowing applications that need processing power. However, the need for specific and very technical development language has not stimulate its broad use. As an alternative, there are High-level Synthesis Languages (HSL), which allow less complicated FPGA use. However, they do not tend to take full advantage of the FPGA technology. Therefore, another alternative was developed, based on the Notification Oriented Paradigm (NOP), called NOP for Digital Hardware (NOP-DH). NOP allows development in high level with its rule-oriented language called NOPL. Its entity decoupling, parallelism, and redundancy avoidance are useful for best performance. In turn, the NOP-DH brings NOP for the FPGA context with the benefits observed in software but enhanced by hardware nature. This paper reviews the NOPL for NOP-DH (NOPL-DH) that aims high level programming for FPGA. The paper proposes the NOPL-DH test by independent developers, by develop...
Energies, 2020
A multi-agent architecture for a Non-Intrusive Load Monitoring (NILM) solution is presented and e... more A multi-agent architecture for a Non-Intrusive Load Monitoring (NILM) solution is presented and evaluated. The underlying rationale for such an architecture is that each agent (load event detection, feature extraction, and classification) outperforms others of the same type in particular scenarios; hence, by combining the expertise of these agents, the system presents an improved performance. Known NILM algorithms, as well as new algorithms, proposed by the authors, were individually evaluated and compared. The proposed architecture considers a NILM system composed of Load Monitoring Modules (LMM) that report to a Center of Operations, required in larger facilities. For the purposed of evaluating and comparing performance, five load event detect agents, five feature extraction agents, and five classification agents were studied so that the best combinations of agents could be implemented in LMMs. To evaluate the proposed system, the COOLL and the LIT-Dataset were used. Performance i...
IFAC Proceedings Volumes, 2000
This article presents the detennination of dynamic equation to manipulators like antropomorphic a... more This article presents the detennination of dynamic equation to manipulators like antropomorphic arm with n-DOF. It was built in MA THEM A TIC A environment, according the method of Euler-Lagrange and is concerned with the actuator fusion in the links structure in DC motor selection process that modifies the dynamic geometric parameters, due of typical operations defined in the manipulators design phase. This work concentrate on the analytic DC motor and reducer specification for each joint too, according drive type, and load that drops previously on its during the accomplishment of a task, that is specified for the wanted manipulator or antropomorphic prostheses.
A Fast Simulator in FPGA for LUT-Based Combinational Logic Circuits of Arbitrary Topology for Evolutionary Algorithms
Journal of Circuits, Systems and Computers, 2016
Current works on generation of combinational logic circuits (CLC) using evolutionary algorithms (... more Current works on generation of combinational logic circuits (CLC) using evolutionary algorithms (EA) propose solutions using field-programmable gate array (FPGA) to accelerate the process of combinational circuit simulation, a step needed in order to evaluate the level of correctness of each individual circuit. However, the current works fail to separate the two distinct problems: the EA and the circuit simulator. The insistence of treating both problem as a single one results in works that fail to address either properly, restricting solutions to simple circuits and to topologically restrictive circuit simulators, while providing very limited data on the results. In this work, we address the circuit simulator problem exclusively, where we propose an architecture for fast simulation of n-LUT CLC of arbitrary topology. The proposed architecture is modular and makes no assumptions on the specific EA to be used with. We provide detailed performance results for varying circuit dimension...
Arquitetura Paralela Reconfigurável de Alto Desempenho aplicada a Métodos Numéricos
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Conference Presentations by Carlos Raimundo Erig Lima
found in the academy, as well as in industrial applications, for open systems, easily adapted to other specifications, and with accessible cost and large processing power. By exploring modularity in reconfigurable logic, it is possible to adapt the system to new project requirements.
Papers by Carlos Raimundo Erig Lima