Evolutionary Method
Mostrando 13-24 de 309 artigos, teses e dissertações.
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13. An Implementation of Self-Organizing Maps for Airfoil Design Exploration via Multi-Objective Optimization Technique
ABSTRACT Design candidates obtained from optimization techniques may have meaningful information, which provides not only the best solution, but also a relationship between object functions and design variables. In particular, trade-off studies for optimum airfoil shape design involving various objectives and design variables require the effective analysis t
J. Aerosp. Technol. Manag.. Publicado em: 2016-06
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14. Comparisons Between Different Methods in Measuring Enzyme Similarity for Metabolic Network Alignment
Metabolic network alignments enable comparison of the similarities and differences between pathways in two metabolic networks and help to uncover the conserved sub-blocks therein. Such analysis is important in the understanding of metabolic networks and species evolution. The fundamental parts of metabolic network alignment algorithms all involve comparisons
Braz. arch. biol. technol.. Publicado em: 22/03/2016
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15. Developing and Multi-Objective Optimization of a Combined Energy Absorber Structure Using Polynomial Neural Networks and Evolutionary Algorithms
Abstract In this study a newly developed thin-walled structure with the combination of circular and square sections is investigated in term of crashworthiness. The results of the experimental tests are utilized to validate the Abaqus/ExplicitTM finite element simulations and analysis of the crush phenomenon. Three polynomial meta-models based on the evolved
Lat. Am. j. solids struct.. Publicado em: 2016
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16. Weldability studies and parameter optimization of AISI 904L super austenitic stainless steel using friction welding
Welding input parameters play a very significant role in determining the quality of a weld joint. The quality of the joint can be defined in terms of mechanical properties, distortion and weld-bead geometry. Generally, all welding processes are employed with the aim of obtaining a welded joint with the desired characteristics. The purpose of this study is to
Mat. Res.. Publicado em: 04/07/2014
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17. Bryophytes on rocky outcrops in the caatinga biome: a conservationist perspective
In the state of Paraíba, Brazil, there is an abundance of rocky outcrops, which are typical elements of the semi-arid landscape. Those outcrops provide refuge to species with morphological adaptations to stressful climates and to rare communities of plants, including bryophytes. Nevertheless, there have been no studies of bryophytes in such habitats in the
Acta Bot. Bras.. Publicado em: 2013-12
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18. Comparative analyses of classical phenotypic method and ribosomal RNA gene sequencing for identification of medically relevant Candida species
As the distribution of Candida species and their susceptibility to antifungal agents have changed, a new means of accurately and rapidly identifying these species is necessary for the successful early resolution of infection and the subsequent reduction of morbidity and mortality. The current work aimed to evaluate ribosomal RNA gene sequencing for the ident
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-04
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19. Advertisement call propagation and species recognition in anurans: in time and space / Propagação e reconhecimento específico do canto de anúncio de anuros: no tempo e no espaço
This study evaluates the influence of the vegetation structure on the advertisement call propagation and the evolution of acoustic communication in anurans. The first chapter reviews the literature on the effects of vegetation in the advertisement-call transmission, addressing directly or not, the Acoustic Adaptation Hypothesis. The studies found were analyz
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/05/2012
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20. A comparison of metrics for estimating phylogenetic signal under alternative evolutionary models
Several metrics have been developed for estimating phylogenetic signal in comparative data. These may be important both in guiding future studies on correlated evolution and for inferring broad-scale evolutionary and ecological processes (e.g., phylogenetic niche conservatism). Notwithstanding, the validity of some of these metrics is under debate, especiall
Genetics and Molecular Biology. Publicado em: 02/08/2012
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21. Application of an iterative method and an evolutionary algorithm in fuzzy optimization
This work develops two approaches based on the fuzzy set theory to solve a class of fuzzy mathematical optimization problems with uncertainties in the objective function and in the set of constraints. The first approach is an adaptation of an iterative method that obtains cut levels and later maximizes the membership function of fuzzy decision making using t
Pesqui. Oper.. Publicado em: 28/06/2012
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22. A new method for decision making in multi-objective optimization problems
Many engineering sectors are challenged by multi-objective optimization problems. Even if the idea behind these problems is simple and well established, the implementation of any procedure to solve them is not a trivial task. The use of evolutionary algorithms to find candidate solutions is widespread. Usually they supply a discrete picture of the non-domina
Pesqui. Oper.. Publicado em: 21/06/2012
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23. An experimental study of variable depth search algorithms for the quadratic assignment problem
This paper introduces a new variable depth search method for the Quadratic Assignment Problem. The new method considers the cost of edges assignment as the criterion to decide which vertices to exchange during local search moves. It also presents the results of an extensive experimental study that compares the performance of local search and variable depth s
Pesquisa Operacional. Publicado em: 03/04/2012
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24. Phylogeny, biogeography and divergence times in Passiflora (Passifloraceae)
As part of a long-term investigation on the evolution of Passiflora L., we investigated the divergence ages of the genus and diversification of its subgenera, relating them with biogeographical and/or historical events, and other characteristics of this taxon. The main aim of the present work was to evaluate the biogeographic distribution of this genus to be
Genet. Mol. Biol.. Publicado em: 2012