Region Merging
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. TRUST-REGION-BASED METHODS FOR NONLINEAR PROGRAMMING: RECENT ADVANCES AND PERSPECTIVES
The aim of this text is to highlight recent advances of trust-region-based methods for nonlinear programming and to put them into perspective. An algorithmic framework provides a ground with the main ideas of these methods and the related notation. Specific approaches concerned with handling the trust-region subproblem are recalled, particularly for the larg
Pesqui. Oper.. Publicado em: 2014-12
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2. Carotenoid biosynthesis structural genes in carrot (Daucus carota): isolation, sequence-characterization, single nucleotide polymorphism (SNP) markers and genome mapping.
Carotenoid pigments are important components of the human diet and carrots are the main dietary sources of the vitamin A precursors IX- and /3- carotene. Carotenoids play essential biological roles in plants and the genes coding for the carotenoid pathway enzymes are evolutionarily conserved, but little information exists about these genes for carrot. In thi
Theoretical and Applied Genetics. Publicado em: 2011
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3. Development and validation of the Brazilian version of the Attitudes to Aging Questionnaire (AAQ): an example of merging classical psychometric theory and the rasch measurement model
Background: Aging has determined a demographic shift in the world, which is considered a major societal achievement, and a challenge. Aging is primarily a subjective experience, shaped by factors such as gender and culture. There is a lack of instruments to assess attitudes to aging adequately. In addition, there is no instrument developed or validated in de
Publicado em: 2010
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4. Vacancies in carbon nanotubes: electronic, structural and transport properties / Vacâncias em nanotubos de carbono: propriedades eletrônicas, estruturais e de transporte
The main purpose of this dissertation is the study of the electronic and structural properties in the presence of different types of vacancies, in one of the most promising materials for nanoelectronics, carbon nanotubes. The defects studied in this work are monovacancy and multivacancies in (5, 5) armchair carbon nanotubes. For that purpose perform quantum
Publicado em: 2008
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5. Corporative Strategies: A Case Study in CVI Holding Santa Maria / Estratégias Corporativas: Um estudo de caso na Holding CVI Santa Maria
The present research, which treats about the development of Corporate Strategics, was done at Holding CVI, with home office in Santa Maria-RS city. The Holding CVI, that among others investments, works on beverage area, has as its main business, The Coca Cola Company franchise, in the region of Santa Cruz do Sul, Passo Fundo and Santa Maria, cities located i
Publicado em: 2006
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6. SegmentaÃÃo de imagens de radar de abertura sintÃtica por crescimento e fusÃo estatÃstica de regiÃes / Segmentation of synthetic aperture radar images by growth and statistical fusion of the regions
A cobertura regular de quase todo o planeta por sistemas de radar de abertura sintÃtica (synthetic aperture radar - SAR) orbitais e o uso de sistemas aerotransportados tÃm propiciado novos meios para obter informaÃÃes atravÃs do sensoriamento remoto de vÃrias regiÃes de nosso planeta, muitas delas inacessÃveis. Este trabalho trata do processamento de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2005
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7. Segmentação multi-níveis e multi-modelos para imagens de radar e ópticas / Multi-levels and multi-models segmentations for radar and optical images
This research presents an innovative automatic segmentation method (SegSAR) designed for radar and optical satellite imagery. The design of SegSAR is innovative because it encompasses (i) several common segmentation techniques such as region growing and merging, edge detection, and minimum area and homogeneity test, which are integrated in a pyramidal compre
Publicado em: 2005
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8. Comparative analysis of multisensor (TM/Landsat and SAR/ERS-1)and multitemporal scenes of Guaira region, Sao Paulo State, Brazil / Analise comparativa de imagens multissensores (TM/Landsat e SAR/ERS-1)e multitemporais, na regiao de Guaira, SP
The present work is intended to analyze and compare two data sets of different sensor systems, acquired in a short period of time and in two opposite seasons (winter and summer). To establish the comparison, two approaches were adopted: the first, qualitative, after visual interpretation of the data allied with information obtained from field work and, on th
Publicado em: 1994
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9. Role of the Ectodomain of the gp41 Transmembrane Envelope Protein of Human Immunodeficiency Virus Type 1 in Late Steps of the Membrane Fusion Process
The membrane fusion process mediated by the gp41 transmembrane envelope glycoprotein of the human immunodeficiency virus type 1 (HIV-1) was addressed by a flow cytometry assay detecting exchanges of fluorescent membrane probes (DiI and DiO) between cells expressing the HIV-1 envelope proteins (Env) and target cells. Double-fluorescent cells were detected whe
American Society for Microbiology.
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10. A nonsense mutation in the gene encoding 2′-5′-oligoadenylate synthetase/L1 isoform is associated with West Nile virus susceptibility in laboratory mice
A mouse model has been established to investigate the genetic determinism of host susceptibility to West Nile (WN) virus, a member of the genus flavivirus and family Flaviviridae. Whereas WN virus causes encephalitis and death in most laboratory inbred mouse strains after peripheral inoculation, most strains derived from recently trapped wild mice are comple
National Academy of Sciences.