Mathematical Morphological
Mostrando 13-24 de 25 artigos, teses e dissertações.
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13. Avaliação da largura ideal de Florestas Ribeirinhas considerando modelagem matemática, estimativa de erosão por ¹²³CS e aspectos ecológicos / Riparian Forest width evaluation using mathematical modeling,137Cs technique and ecologycal aspects.
The main hypotheses of the present study regarding the evaluation of the efficiency of riparian forest to sediment retention were: 1. Riparian Forest is an efficient system for sediment retention in watersheds; 2. Different Riparian Forests widths present different efficiencies for this function and, 3. Widths of riparian forests to sediment retention vary a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2006
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14. Morfometria geometrica e modelagem matematica em Lantana camara L. (Verbenaceae) / Mathematical modeling and mporphometric relations in the vegetative body of Lantana camara L. (Verbenaceae) in Brazil
The taxonomy of Lantana camara has been the target of discussion by taxonomists all over the world. The morphological, ecological and chemical plasticity observed is very extensive. Some autors consider that L. camara is a species complex instead of a monotypic taxon, composed of up to 150 different taxa. In this sudy, the variability of L. camara is studied
Publicado em: 2006
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15. "Multiresolution design of morphological operators from examples" / "Projeto multirresolução de operadores morfológicos a partir de exemplos"
The task of finding a good solution for an image processing problem is often very complex. It usually depends on the knowledge, experience and intuition of an image processing specialist. This complexity has served as a motivation for some research groups to create techniques for automatically designing image operators based on a collection of input and outp
Publicado em: 2006
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16. Rheological and morphological characterization of Streptomyces olindensis growing in batch and fed-batch fermentations
Mathematical correlations between rheological properties of the fermentation broth (consistency index, K, and flow behavior index, n), biomass concentration (X) and average clump dimension (D) of Streptomyces olindensis in bioreactor cultivations were obtained, during batch and fed-batch processes. Two types of correlations were compared: the first considere
Brazilian Journal of Chemical Engineering. Publicado em: 2005-03
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17. A comparative study on associative memories with emphasis on morphological associative memories / Um estudo comparativo em memorias associativas com enfase em memorias associativas morfologicas
Memórias associativas neurais são modelos do fenômeno biológico que permite o armazenamento de padrões e a recordação destes apos a apresentação de uma versão ruidosa ou incompleta de um padrão armazenado. Existem vários modelos de memórias associativas neurais na literatura, entretanto, existem poucos trabalhos comparando as varias propostas. N
Publicado em: 2005
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18. Mathematical modeling of electro-rotation spectra of small particles in liquid solutions: Application to human erythrocyte aggregates
Electro-rotation can be used to determine the dielectric properties of cells, as well as to observe dynamic changes in both dielectric and morphological properties. Suspended biological cells and particles respond to alternating-field polarization by moving, deforming or rotating. While in linearly polarized alternating fields the particles are oriented alon
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-02
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19. AnÃlise de imagens digitais em patologia utilizando morfologia matemÃtica e lÃgica nebulosa
This work presents a set of tools and methods for image analysis in Pathology using Mathematical Morphology and Fuzzy Logic. A new method for image classification based and synthetic bands generation by the use of morphological transformations in feature extraction and spacial expansion and Fuzzy Logic in the final classification is proposed. Also, the libra
Publicado em: 2003
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20. Desenvolvimento de plastico biodegradavel a base de amido de milho e gelatina pelo processo de extrusão : avaliação das propriedades mecanicas, termicas e de barreira / Development of a biodegradable plastic base of cornstarch and gelatin by the process of extrusion: evaluation of mechanical properties, thermal and barrier
Due to the increasing accumulation of synthetic plastic rubbish, damaging the ecosystem, various strategies are being followed aimed at decreasing this aggression by way of prevention, reduction, recycling and chemical valorization of the synthetic materials, and especially by the use of biodegradable polymers. The use of starch to make thermoplastic materia
Publicado em: 2003
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21. O uso de algoritmos genéticos na decomposição morfológica de operadores invariantes em translação aplicados a imagens digitais / The use of genetic algorithms in the morphological decomposition of translation invariant operators applied to digital images
Este trabalho usa um algoritmo genético na decomposição de operadores invariantes em translação para imagens digitais. Esta decomposição tem a forma de uma união (resp. interseção) de operadores sup-geradores (resp. inf-geradores). Esses operadores são construídos a partir dos quatro operadores elementares da Morfologia Matemática que, por sua v
Publicado em: 1998
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22. Uma abordagem morfológica para casamento de padrões / Morphological approach for template matching
In this work, a morphological representation for template matching in grayscale images is presented. This representation is obtained through the composition of the Pattern Matching Operator with the Operator for Global Maximum GrayLevel Location, which can be expressed in terms of the following classes of Mathematical Morphology elementary operators: dilatio
Publicado em: 1997
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23. Pentagon packing models for "all-pentamer" virus structures.
A connection is made between 1) the observed structures of virus capsids whose capsomers are all pentamers and 2) the mathematical problem of determination of the largest size of a given number of equal regular spherical pentagons that can be packed on the surface of the unit sphere without overlapping. It is found that papillomaviruses provide the conjectur
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24. Increased noise as an effect of haploinsufficiency of the tumor-suppressor gene neurofibromatosis type 1 in vitro
In human diseases related to tumor-suppressor genes, it is suggested that only the complete loss of the protein results in specific symptoms such as tumor formation, whereas simple reduction of protein quantity to 50%, called haploinsufficiency, essentially does not affect cellular behavior. Using a model of gene expression, it was presumed that haploinsuffi
National Academy of Sciences.