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Accelerating the Shuffled Frog Leaping algorithm by parallel implementations in FPGAs

Accelerating the Shuffled Frog Leaping algorithm by parallel...

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2010 IEEE 5th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2010

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos S. Coelho, Leandro Ayala-Rincón, Mauricio Department of Mechanical Engineering Automation and Control Group/GRACG University of Brasilia Brasilia D.F. Brazil Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia D.F. Brazil

ISBN: (纸本)9781424464388

Meta-heuristics are efficient techniques for solving large scale optimization problems in which traditional mathematical techniques are impractical or provide sub-optimal solutions. The Shuffled Frog Leaping algorithm (SFLA) is a stochastic iterative method, bio-inspired on the memetic evolution of a group of frogs when seeking for food, which combines the social behavior-based of the particle swarm optimization technique (PSO) and the global information exchange of memetic algorithms. However, the SFLA algorithm suffers on large execution times, being this problem clearly evident when solving complex optimization problems for embedded applications. This drawback can be overcome by exploiting the parallel capabilities of the SFLA. This paper proposes a hardware parallel implementation of the SFLA algorithm (HPSFLA) using FPGAs (Field programmable gate Arrays) and the efficient floating-point arithmetic. The proposed architecture allows the SFLA to improve the functionality of the algorithm as well as to decrease the execution times by implementing parallel frogs and parallel memeplexes. Three well-known benchmark problems have been used to validate the implemented algorithm and simulation results demonstrate that the HPSFLA speeds-up by factors of 362, 727 and 211 a C-code implementation using an embedded microprocessor for the Sphere, Rastrigin and Rosenbrock benchmarks problems, respectively. Synthesis, simulation and execution time results demonstrate the effectiveness of the proposed HPSFLA architecture for embedded optimization systems. © 2010 IEEE.

关键词： Global optimization

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A scalable method for detecting multiple loci associated with traits using TF-IDF weighting and association rule mining

A scalable method for detecting multiple loci associated wit...

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IEEE International Conference on Bioinformatics and Biomedicine Workshops (BIBMW)

作者： Sunwon Lee Jaewoo Kang Junho Oh Department of Graduate Program in Bioinformatics Korea University Seoul South Korea Department of Computer Science and Engineering Korea University Seoul South Korea

The recent advance in SNP genotyping has made a significant contribution to reduction of the costs for large-scale genotyping. The development also has dramatically increased the size of the SNP genotype data. The increase of the volume of the data, however, has posed a huge obstacle to the conventional analysis techniques that are typically vulnerable to the high-dimensionality problem. To address the issue, we propose a method that exploits two well-tested models: the document-term model and the transaction analysis model. The proposed method consists of two phases. In the first phase, we reduce the dimensions of the SNP genotype data by extracting significant SNPs through transformation of the data in lieu of the document-term model. In the second phase, we discover the association rules that signify the relations between the SNPs and the traits, through the application of the transactional analysis in the reduced-dimension genotype data. We validated the discovered rules through the literature survey. Experiments were also carried out using the HGDP panel data provided by the Foundation Jean Dausset-CEPH, which prove the validity of our new method for identifying appropriate dimensional reduction and associations of multiple SNPs and traits.

关键词： Association rules Data models Analytical models Diseases Asia Context

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Computational and biological approach to understand the 3′ UTR-mediated posttranscriptional regulation of alfalfa cytosolic glutamine synthetase genes

Computational and biological approach to understand the 3′ ...

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2nd International Conference on Bioinformatics and Computational Biology 2010, BICoB 2010

作者： Simon, Bindu Sengupta-Gopalan, Champa Yelavarthi, Pavan K. Ranjan, Desh Graduate Program in Molecular Biology New Mexico State University Las Cruces NM 88003 United States Dept. of Plant and Environmental Sciences New Mexico State University Las Cruces NM 88003 United States Department of Computer Science New Mexico State University Las Cruces NM 88003 United States Department of Computer Science Old Dominion University Norfolk VA 23529 United States

ISBN: (纸本)9781617381119

Glutamine synthetase (GS) is a key enzyme in nitrogen metabolism in plants. One of the GS isoforms in plants, GS1, is transcriptionally regulated. Our recent studies show that a soybean GS1, Gmglnβ 1, gene is posttranscriptionally regulated by its 3′UTR. It is of interest to know if the 3′UTR-mediated posttranscriptional regulation of GS1 genes is a universal phenomenon or is it limited to Gmglnβ 1 gene only. The 3′UTR-mediated posttranscriptional regulation of alfalfa GS1 genes (MsGS100 and MsGS13) was investigated using both computational and biological approaches. For our first set of study, we used CisFind, a software tool that identifies unextendable common patterns among sequences, to analyze the 3′UTRs of GS1 genes. CisFind analysis of the 3′UTRs showed that the 3′UTR of MsGS100 shared common putative cis-element motifs with the Gmglnβ 1 3′UTR whereas these elements were absent in the 3′UTR of MsGS13 gene. The computational results were verified using transgenic approach, and the results confirmed the computational analysis. The 3′UTR of MsGS 100 plays a similar role as the 3′UTR of Gmglnβ 1 gene in posttranscriptional regulation of a reporter gene while the 3′UTR of the MsGS13 does not. CisFind, was also used in analyzing the region in the 3′UTR of MsGS13 that could be responsible for its nodule enhanced expression (by detecting putative cis-elements that are overrepresented in the 3′UTR of nodule-enhanced GS1 genes).

关键词： Amino acids

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UAV relay network to support WSN connectivity

UAV relay network to support WSN connectivity

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2010 International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, ICUMT 2010

作者： De Freitas, Edison Pignaton Heimfarth, Tales Netto, Ivayr Farah Lino, Carlos Eduardo Pereira, Carlos Eduardo Ferreira, Armando Morado Wagner, Flávio Rech Larsson, Tony IDE Halmstad University Halmstad Sweden Computer Science Department Federal University of Lavras Lavras Brazil Institute of Informatics Federal University of Rio Grande do Sul Porto Alegre Brazil Defense Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil

ISBN: (纸本)9781424472857

An important problem in Wireless Sensor Networks (WSN) is the occurrence of failures that lead to the disconnection of parts of the network, compromising the final results achieved by the WSN operation. A way to overcome such problem is to provide a reliable connection to support the connectivity via other types of nodes that communicate with the sensor nodes. This paper proposes the usage of a network composed by Unmanned Aerial Vehicles (UAVs) as a relay network to guarantee the delivery of data produced by WSN nodes on the ground to the users. Results from simulations of the proposed technique are provided and discussed. ©2010 IEEE.

关键词： Antennas

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Lung Cancer Diseases Diagnostic Asistance Using Gray Color Analysis

Lung Cancer Diseases Diagnostic Asistance Using Gray Color A...

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International Conference on Computational Intelligence, Modelling and Simulation (CSSIM)

作者： Paulus Ford Lumban Gaol Graduate Program in Informatics Engineering Department of Computer Science Bina Nusantara University Jakarta Indonesia Bina Nusantara University Jakarta Indonesia

Errors in diagnosing the disease is a critical risk that must be faced by any person giving treatment to the hospital. Medical treatment can not always be done with perfect accuracy. Lung cancer is one of the most deadly disease that prone to misdiagnose. In general, some practitioners tend to “read” cancer in x-ray rontgen image as tumor this could be fatal. To generate a diagnose, a general practitioner use three kind of examination i.e : patient History, Radio logic examination, phisical examination. In this paper, Gray color for image indexing and retrieval are investigated. The features are derived based on the statistical distribution of Harralick feature from image sample. By utilizing the proposed invariant features, the similarity measure between query and database images provides reliable retrieval results.

关键词： Pixel Image color analysis Cancer Diseases Lungs Databases Biomedical imaging

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Enhanced wireless sensor network setup strategy supported by intelligent software agents

Enhanced wireless sensor network setup strategy supported by...

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9th IEEE Sensors Conference 2010, SENSORS 2010

作者： De Freitas, Edison Pignaton Heimfarth, Tales Netto, Ivayr Farah De Sá, Alex Guimarães Cardoso Pereira, Carlos Eduardo Ferreira, Armando Morado Wagner, Flávio Rech Larsson, Tony IDE Halmstad University Halmstad Sweden Computer Science Department Federal University of Lavras Lavras Brazil Institute of Informatics Federal University of Rio Grande do Sul Porto Alegre Brazil Defense Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil

ISBN: (纸本)9781424481682

A well know problem in the Wireless Sensor Network (WSN) research area is the usage of appropriate strategies to setup the sensor nodes such that they may accomplish sensing missions. This problem refers to the selection of appropriate nodes to perform the different tasks required to the missions' accomplishment and may be thus characterized as an instance of the task and resource allocation problem. Traditional approaches consider pre-planned strategies, which are not flexible to deal with changes in the network and environment operating conditions. This paper presents an enhanced agent-oriented strategy, which consists of a usage of mobile intelligent agents to disseminate missions and nodes' information over the network, as well as stationary software agents installed in the sensor nodes to provide advanced reasoning apparatus for decision making purposes. The proposed enhancement complements the original agent-based approach with robustness features required to overcome extreme adverse conditions in which an ordinary WSN presents poor results. Results from simulations provide evidences of the efficiency of the complete enhanced approach. ©2010 IEEE.

关键词： Sensor nodes

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Comparison between two FPGA implementations of the particle swarm optimization algorithm for high-performance embedded applications

Comparison between two FPGA implementations of the particle ...

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2010 IEEE 5th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2010

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos S. Coelho, Leandro Ayala-Rincón, Mauricio Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia D.F. Brazil Industrial and Systems Engineering Graduate Program LAS/PPGPES Pontifical Catholic University of Parana Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia D.F. Brazil

ISBN: (纸本)9781424464388

Particle Swarm Optimization (PSO) algorithms have been proposed to solve engineering problems that require to find an optimal point of operation. There are several embedded applications which requires to solve online optimization problems with a high performance. However, the PSO suffers on large execution times, and this fact becomes evident when using Reduced Instruction Set computer (RISC) microprocessors in which the operational frequencies are low in comparison with the high operational frequencies of traditional personal computers (PCs). This paper compares two hardware implementations of the parallel PSO algorithm using an efficient floating-point arithmetic which perform computations with large dynamic range and high precision. The full-parallel and the partially-parallel PSO architectures allow the parallel capabilities of the PSO to be exploited in order to decrease the running time. Three well-known benchmark test functions have been used to validate the hardware architectures and a comparison in terms of cost in logic area, quality of the solution and performance is reported. In addition, a comparison of the execution time between the hardware and two C-code software implementations, based on a Intel Core Duo at 1.6GHz and a embedded Microblaze microprocessor at 50MHz, are presented. © 2010 IEEE.

关键词： Global optimization

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Photonic crystal defects with increased surface area for improved refractive index sensing

Photonic crystal defects with increased surface area for imp...

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Conference on Lasers and Electro-Optics, CLEO 2010

作者： Kang, Christopher Christopher Phare Weiss, Sharon M. Vlasov, Yurii A. Assefa, Solomon Interdisciplinary Graduate Program in Materials Science Vanderbilt University Nashville TN 37235 United States Department of Physics and Astronomy Vanderbilt University Nashville TN 37235 United States Department of Electrical Engineering and Computer Science Vanderbilt University Tennessee 37235 United States IBM T.J. Watson Research Center Yorktown Heights NY 10536 United States

Photonic crystal cavities with tunable surface area via multiple-hole defects were investigated for increased resonance wavelength shifts upon exposure to variable-index analytes. Sensitivity was improved by 10% compa... 详细信息

ISBN: (纸本)9781557528896

关键词： Refractive index

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Photonic crystal defects with increased surface area for improved refractive index sensing

Photonic crystal defects with increased surface area for imp...

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Conference on Lasers and Electro-Optics

作者： Kang, Christopher Phare, Christopher Weiss, Sharon M. Vlasov, Yurii A. Assefa, Solomon Interdisciplinary Graduate Program in Materials Science Vanderbilt University Nashville TN 37235 United States Department of Physics and Astronomy Vanderbilt University Nashville TN 37235 United States Department of Electrical Engineering and Computer Science Vanderbilt University 37235 United States IBM. T.J. Watson Research Center Yorktown Heights NY 10536 United States

Photonic crystal cavities with tunable surface area via multiple-hole defects were investigated for increased resonance wavelength shins upon exposure to variable-index analytes. Sensitivity was improved by 10% compar... 详细信息

ISBN: (纸本)9781557528902

关键词： Surface defects

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Hydrogen sensors based on zinc oxide nanoparticles

Hydrogen sensors based on zinc oxide nanoparticles

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IEEE International Conference on Nano/Micro Engineered and Molecular Systems

作者： Samerjai, Thanittha Liewhiran, Chaikarn Wisitsoraat, Anurat Phanichphant, Sukon Nanoscience and Nanotechnology Program Graduate School Chiang Mai University Chiang Mai Thailand Department of Physics and Materials Science Faculty of Science Chiang Mai University Chiang Mai Thailand National Electronics and Computer Technology Center 112 Pahol Yothin Rd Pathumthani Thailand NANOTEC Center of Excellence Chiang Mai University Chiang Mai Thailand

ISBN: (纸本)9781424465439

Pure ZnO, pure MgO and 5 wt%MgO/ZnO nanocomposites were produced by flame spray pyrolysis (FSP) in a single step using zinc naphthenate and magnesium acetate tetrahydrate as Zn and Mg precursors. The particle properties were analyzed by XRD, BET and TEM analyses. The sensing films were prepared by mixing the nanoparticles into an organic paste composed of ethyl cellulose and terpineol as a vehicle binder and solvent, respectively. The resulting paste was spin-coated on Al2O3 substrates interdigitated Au electrodes. The gas sensing of H2 concentration ranging from 0.5-1 vol% was studied at 300oC in dry air. The 5 wt% MgO/ZnO nanocomposites film showed higher sensitivity. The sensitivity increased and the response time decreased with increasing H2 concentrations. ©2010 IEEE.

关键词： Zinc oxide

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