Permutations
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. Membrane Stress Proclivities in the Mammalian Labyrinth
Introduction The membranes of the inferior division of the labyrinth in some mammals appear more vulnerable to hydropic distention than those of the superior division. This finding in guinea pigs, cats, and humans has been attributed to the evidently thinner membranes with implied higher stress levels. Objective The objective of this study is to identify
Int. Arch. Otorhinolaryngol.. Publicado em: 2014
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2. Logical reasoning and the game of chess : in search of relations / Raciocinio logico e o jogo de xadrez : em busca de relações
This study aimed to research if there is a positive correlation between the performances at the game of chess and on the Logical Thought Evaluation Scale (Echelle de Developpement de la Pensée Logique - EDPL). The theoretical basis for this study has been Jean Piaget´s Genetic Epistemology, focusing on the concepts of real, possible and necessary. Particip
Publicado em: 2010
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3. Dinâmica populacional e efeitos de variáveis ambientais sobre a fauna de pequenos mamíferos em um fragmento de floresta com araucária no sul do Brasil
Natural populations of small rodents fluctuate continually over time and the population dynamics of any living organism are shaped by both intrinsic and extrinsic factors. Small mammals populations can show a continuum dynamic activity, ranging from stability to regular cycles of variable amplitude. The species dynamics is also known to be influenced by the
Publicado em: 2010
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4. ESTRUTURA GENÉTICA DE Tibouchina papyrus (Pau-papel) EM ÁREAS NATURAIS DE CAMPO RUPESTRE NO CERRADO
(Genetic structure of Tibouchina papyrus (Pohl) Toledo (pau-papel) in natural areas of Cerrado rupestrian fields). This paper has the aim describe the genetic of variability of Tibouchina papyrus (Pohl) Toledo local populations, from the regions of Serra Dourada and Serra de Pirineus, in Goiás State, Central Brazil. The six RAPD primers generated a total of
Publicado em: 2008
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5. Comparação algebrica de genomas : o caso da distancia de reversão / Algebraic genome comparison : the case of reversal distance
In the last decades we have seen a great progress in molecular biology. That lead to a large volume of data on molecules, DNA and proteins, essential for life.The current stage of research lies in the pursuit of tools to extract information with biological relevance from this data. In this context, comparison of genomes is an important tool and genome rearra
Publicado em: 2007
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6. Algebraic analysis of genome rearrangement problems : algorithms and complexity / Analise algebrica de problemas de rearranjo em genomas : algoritmos e complexidade
O sucesso na obtenção de cadeias completas de DNA de alguns organismos tem incentivado a busca de novas técnicas computacionais capazes de analisar esse montante de informação para aplicá-lo na descoberta de novos remédios, aumento da produção de alimentos e investigação do processo de evolução dos seres vivos, entre outras aplicações. A compa
Publicado em: 2007
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7. Aplicações do principio da inclusão e exclusão / Applications of the inclusion and exclusion principle
In this work we present important results from enumerative combinatorics, with an emphasis on the Principle of Inclusion and Exclusion. Relevant applications of this principle are presented to illustrate its use
Publicado em: 2006
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8. Projeto de EntrelaÃadores para cÃdigos turbo
Interleavers perform a central role in the near channel capacity performance of turbo codes. Besides been introduced as simple random permutations, nowadays there are several classes of interleavers like s-random, DRP, polynomial, and quasi-cyclic that provide a better performance for turbo codes in an AWGN channel and/or are simpler to store. This work has
Publicado em: 2006
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9. Generating permutations and combinations in lexicographical order
We consider producing permutations and combinations in lexicographical order. Except for the array that holds the combinatorial object, we require only O(1) extra storage. The production of the next item requires O(1) amortized time.
Journal of the Brazilian Computer Society. Publicado em: 2001
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10. Problemas industriais de seqüenciamento de padrões: alguns resultados de complexidade e novos modelos de busca local / Industrial pattern seguencing problems: some complexity results and new local search models
In this thesis we explore some industrial pattern sequencing problems arising in settings as distinct as the scheduling of flexible machines, the design of VLSI circuits, and the sequencing of cutting patterns. This latter setting presents us the minimization of open stacks problem, which is the main focus of our study. Some complexity results are presented
Publicado em: 2001
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11. Industrial pattern seguencing problems: some complexity results and new local search models / Problemas industriais de seqüenciamento de padrões: alguns resultados de complexidade e novos modelos de busca local
Nesta tese nós exploramos alguns problemas industriais originários de tarefas tão distintas quanto a programação de uma máquina flexível, o projeto de circuitos integrados VLSI e o sequenciamento de padrões de corte. Desta última tarefa provêm o problema de minimização de pilhas em aberto que é o principal foco do estudo. Alguns resultados de co
Publicado em: 2001
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12. Propriedade dos uns consecutivos e arvores PQR
In the present work we formalize Meidanis and Munuera s PQR trees and their relationship with the Consecutive Ones Property and with Booth and Lueker s PQ trees. We show that a PQR tree built for a colIection C of subsets of a ground set U is able to store alI permutations of U that verify the consecutive ones property. We introduce two algorithms that build
Publicado em: 1997