Spatial Criterion
Mostrando 13-24 de 36 artigos, teses e dissertações.
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13. Detecção de movimentos suspeitos em seqüências de vídeo
Its proposed in this work new techniques to automate processes in electronic surveillance systems. The input of the algorithm described is the trajectories of people captured from real filmed sequences, which are used to define pedestrian behavior patterns. The proposed model is based in two criteria to define behaviors as usual or unusual: spatial occupancy
Publicado em: 2007
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14. Extração de atributos de forma e seleção de atributos usando algoritmos genéticos para a classificação de regiões / Shape feature extraction and feature selection using genetic algorithm for region classification
Discrimination power of earth surface targets has been continuously bettered with the increasing remote sensors technological advances. Urban systems applications are one of the areas that recently took benefit of these advances, particularly when using high resolution remote sensing data. In this scale, however, it is often necessary to take into account th
Publicado em: 2007
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15. Qualidade do ajuste de modelos geoestatÃsticos utilizados na agricultura de precisÃo
Researches about the spatial variability of the soil attributes that influence the productivity are highly important for the development of new technologies that benefits the agriculture. To verify the variability of these attributes we used the geostatistic that offers techniques to the obtainment of information concerning this variability. The processes of
Publicado em: 2006
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16. Habitat use of Tropical Screech Owl (Megascops choliba) and Burrowing Owl (Athene cunicularia) on patchez of cerrado in state of São Paulo, Brazil / Uso do hábitat da corujinha-do-mato Megascops choliba e da coruja-buraqueira Athene cunicularia (Strigiformes: Strigidae) em remanescentes de cerrado da região central do Estado de São Paulo
The Cerrado biome is the largest, richest and perhaps the most threatened tropical savannah of the world. However, most part of its natural areas has been transformed on agrosystems and pastures where basic principles of conservation werent respected. Each biological group or taxa are affected on different ways by this change. Birds of prey are particularly
Publicado em: 2006
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17. Application of geostatistical methods to identify the spatial dependence in the data analysis of a fan systematic design experiment / Aplicação de métodos geoestatísticos para identificação de dependência espacial na análise de dados de um experimento em delineamento sistemático tipo "leque"
Systematic designs are utilized in many areas, such as: forestry, horticulture, soils, etc. In forestry, the systematic designs are frequently used for preliminary studies and they aim at evaluating the largest number of possible spacings. However, there are some limitations on their use. The first limitation is the systematic design (non-randomized) of plan
Publicado em: 2005
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18. Psychomotor Profile: Characterization of Schoolchildren Attending the First Grade at a Private Elementary School. / Perfil psicomotor: caracterização de escolares da primeira série do ensino fundamental de colégio particular.
The aim of this study was to characterize the psychomotor profile of schoolchildren attending the first grade in Elementary School, considering their gender, gestational age and physical aspect, as well as to analyze the relationship between motor and school performances. After obtaining parental consent, 37 children (20 boys and 17 girls) aging 6,5 to 7,8 y
Publicado em: 2005
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19. Estimando o preço implícito de amenidades urbanas: evidências para o município de São Paulo. / "Estimating urban amenities implicit prices: evidences from São Paulo City"
In this work, I use a hedonic equation to estimate the implicit prices of urban amenities based on housing market data for the city of São Paulo. I test two different specifications, one with the original independent variables, and another with factors to correct for multicollinearity. In addition to the traditional monocentric model, I include an accessibi
Publicado em: 2003
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20. Métodos de amostragem no levantamento da comunidade arbórea em floresta estacional semidecidual. / Sampling methods for surveying in tree species community in a semideciduous forest.
Sampling methods for surveying in tree species community in a semideciduos forest were compared. First was applied the angle count sampling method and select the best basal area factor to study the tree community. The criterion of inclusion adopted was all trees with DBH >10cm. The basal factors 2, 3 and 4 m 2 ha -1 sampled 596, 408 and 297 individuals and 5
Publicado em: 2002
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21. Metodos estatisticos para localização otima de estações de mensuração de poluição em rede fixa
Optimal experiments designs are used in this work to define the optimal siting of a network of new pollution-measuring stations, to be contracted or expanded. Firstly we consider a regression model (called Model A) to represent the relationship between measured concentrations and geographic coordinates. Model A shows itself as inadequate for environmental da
Publicado em: 1996
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22. The contrast sensitivity of human colour vision to red-green and blue-yellow chromatic gratings.
A method of producing red-green and blue-yellow sinusoidal chromatic gratings is used which permits the correction of all chromatic aberrations. A quantitative criterion is adopted to choose the intensity match of the two colours in the stimulus: this is the intensity ratio at which contrast sensitivity for the chromatic grating differs most from the contras
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23. Conformational aspects of antiviral activity of deoxyguanosine acyclic analogues.
Conformational possibilities of a series of deoxyguanosine analogues possessing or lacking antiviral activity were evaluated using methods of the molecular mechanics. Comparison of the spatial structures of acyclic analogues with one another and with the spatial structures of deoxyguanosine demonstrates restricted conformational mobility for compounds devoid
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24. Topographical amnesia.
The ability to learn to criterion a visually-guided stylus maze was found impaired in patients with right posterior cerebral damage, not only in comparison with controls but also with other hemisphere-damaged groups. The contribution of the corresponding left sided area to this task is dubious, and certainly not substantial. This finding points to the indepe