Diversity Gain
Mostrando 13-24 de 79 artigos, teses e dissertações.
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13. VHDL SIMPLE SYSTEM FOR DEVELOPING A SETUP OFMULTIPLE ANTENNAS / SISTEMA SIMPLES EM VHDL PARA O DESENVOLVIMENTO DE UM SETUP DE MÚLTIPLAS ANTENAS
MIMO systems (Multiple In - Multiple Out) are the rise of new tele- communication systems. They have the characteristic of generating greater channel capacity with low power transmitters, creating a more efficient use of energy. As the purpose is to provide higher data rate, conventional methods are too limited to improve this, and MIMO systems generate an i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/09/2012
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14. Estrutura hierárquica na resposta das distribuições geográficas de plantas do Cerrado à mudanças climáticas / Hierarchical structure in the response of geographic distributions of Cerrado plants to climate change
The climate can be considered an extremely important factor in vegetation distribution and its characteristics in a global context. Climate changes affect the global distribution of vegetation in the distant past and probably will affect in the future. Spatial distribution models of species (SDMs), also known as niche models are one of the best current tools
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/03/2011
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15. Fusão Homotípica e Heterotípica entre Vacúolos Parasitóforos de Leishmania spp / Homotypic and Heterotypic Fusion between Leishmania spp. Parasitophorous Vacuoles
Most non-viral intracellular pathogens gain entrance into human and animal host cells by classic or modifIed phagocytosis and are thus lodged in phagosomes which they may or not continue to occupy in the course of infection. Their survival and multiplication within host cells depend on modulation of the compositional and functional phenotypes of the phagosom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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16. Diversidade funcional da partição de biomassa, ganho de carbono e do uso da água em Coffea canephora, em resposta à disponibilidade hídrica / Functional diversity of biomass partitioning, carbon gain and water use in Coffea canephora, in response to water availability
A divergência funcional associada à partição de biomassa, ganho de carbono e uso da água foi estudada em 10 clones de Coffea canephora. Mudas com quatro pares de folhas, provenientes do enraizamento de estacas de ramos ortotrópicos, foram cultivadas a pleno sol, em vasos de 24 dm3. Quando atingiram oito meses, as plantas foram submetidas a regimes híd
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2010
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17. Systematics and Biogeography of the Didymopanax group of Schefflera (Araliaceae)
Schefflera is the largest genus in the angiosperm family Araliaceae, with about 900 species, of which c. 300 belong to five subgeneric groups in the Neotropical region. Previous phylogenetic studies of Schefflera have been limited to a small number of species from this region, and very little is know about phylogenetic relationships in the Brazilian-centered
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200910
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18. Analise da probabilidade de outage em canais de desvanecimento generalizados para combinadores sob interferencia co-canal / Outage probability analysis in generalized channels of combiners under cochannel interference
Diversity combining is an important technique usually employed to alleviate the unwanted efects of the cochannel interference. Equal-gain and maximal-ratio combining are considered here, as they are two of the most important space diversity methods. Unfortunately, the evaluation of the multifold nested integrals required in the exact outage probability analy
Publicado em: 2009
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19. Analysis of alternative splicing by using expressed sequence data / Análise de splicing alternativo utilizando dados de sequências expressas
Alternative splicing is a process by which the exons of the primary gene transcript are linked in different ways during RNA processing resulting in distinctive proteins. It is an important mechanism in eukaryotic gene expression that enhances proteome diversity and, therefore, the coding capacity of the genome. Different mechanisms seem affect alternative sp
Publicado em: 2009
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20. SeleÃÃo local de caracterÃsticas em agrupamento hierÃrquico de documentos
Hierarchical clustering of documents is used to provide interface for navigating through collections of documents, assisting in the activity of information retrieval. As the vectors representing the documents have a high dimensionality, the presence of irrelevant terms can harm the clustering algorithm. The use of feature selection in text clustering is able
Publicado em: 2009
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21. The housing space in São Paulo city: design studies / O espaço de doméstico na cidade de São Paulo: um projeto arquitetônico
Though it resembles many of metropolitan cities in the world today fractured, segregated, contradictory, and rich São Paulo inherits its configuration from a number of unique factors. Its rapid growth, both economic and demographic, on a specific territory has led to such a configuration that it must be properly understood so that future interventions, inte
Publicado em: 2009
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22. Research on the mechanisms of subtelomeric rearrangements in monosomy 1p36, extension of the spectrum of phenotypic and behavioral variability, diferential diagnosis and characterization of a critical region for obesity / Pesquisa dos mecanismos de rearranjos cromossômicos subteloméricos na monossomia 1p36, expansão do espectro da variabilidade fenotípica e comportamental, diagnósticos diferenciais e caracterização de uma região crítica para obesidade
Subtelomeric abnormalities are an important cause of mental retardation and birth defects. The mechanisms involved in the formation of subtelomeric rearrangements are now beginning to be elucidated. Breakpoint sequencing analysis of 1p36 rearrangements has revealed prevalence of different nonexclusive recombination-repair mechanisms. Rearrangements of 1p36 a
Publicado em: 2009
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23. Genetic polymorphisms at the leptin receptor gene in three beef cattle breeds
The genetic diversity of a single nucleotide polymorphism (SNP) at the exon 20 (T945M) of the leptin receptor gene (LEPR) and of three short tandem repeats (STRs BM7225, BMS694, and BMS2145) linked to LEPR was investigated in three beef cattle herds (Brangus Ibagé, Charolais, and Aberdeen Angus). A cheap and effective new method to analyze the T945M polymor
Genetics and Molecular Biology. Publicado em: 2008
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24. DinÃmica estrutural da comunidade arbÃrea de um fragmento de floresta semisecÃdua Ãs margens do Rio Capivari, Lavras/MG / Structural dynamics of arboreal community in a tropical semideciduous forest fragment at Capivari river border in Lavras, Minas Gerais.
The aim of this study was to describe the arboreal community dynamics of a semideciduous seasonal forest fragment Capivari river border in Lavras, Minas Gerais. The forest fragment is known as Capivari forest. The study was divided in three parts: the first is a general description of the approached issues, (chapter 1); the second is about the changes in for
Publicado em: 2008