Terrain Parameters
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Individualization of soil classes by disaggregation of physiographic map polygons
Resumo: O objetivo deste trabalho foi desagregar os polígonos de mapas de unidades fisiográficas, de modo a individualizar as classes de solos ocorrentes em cada unidade, para representá-las como unidades de mapeamento simples de solos e gerar um mapa de solos com maior detalhe cartográfico que o mapa original, ampliando a utilidade desses dados em deman
Pesq. agropec. bras.. Publicado em: 14/10/2019
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2. Wheel-surface model parameters estimation: sand humidity influence on traction effort of all-terrain unmanned vehicle
Abstract The aim of the paper is to present the experimental results for material model of the sand, case of wet and dry probe. Since traction and side forces derivation methodology and tire-round interaction models for on-road vehicles are widely described, there is a lack of methods for off-road vehicles. The methodology, presented in this work, includes t
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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3. ENERGY EFFICIENCY OF A CENTER PIVOT IRRIGATION SYSTEM
ABSTRACT This study aimed to evaluate the energy efficiency of a center pivot irrigation system operating in a terrain of variable topography. Values of Pumping Energy Efficiency (PEE), Supply Energy Efficiency (SEE), Global Energy Efficiency (GEE) and Specific Energy (Es in kWh m-3) computed at 18 different angular positions of the lateral line were used as
Eng. Agríc.. Publicado em: 2018-04
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4. Utilização da técnica de co-krigagem com inclinação máxima e altitude do terreno no delineamento de zonas de manejo: granulometria do solo e disponibilidade hídrica / Using the technique of cokriging with maximum slope of the terrain and altitude in the delineation of management zones: grain size and soil water availability
In Brazil, few studied are related about soil sampling strategies in areas with more than one type soil and various features of the landscape, these strategies are important to map the spatial variability of physical attributes: size fractions, as well as the correlation of these with geomorphologic parameters: altitude and maximum slope of the sampled area
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012
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5. Avaliação de algoritmos e modelos digitais de elevação para extração automática da drenagem / Automatic drainage network extraction using digital elevation models
This work is an evaluation of automatic processes for drainage extraction from Digital Elevation Models (DEM), as related to different data sources, terrain types, algorithms and operation parameters. SRTM, Topodata and GDEM data of four (4) watersheds with distinct geomorphometries were processed through six (6) different flow algorithms (D8, Rho8, Dinf, Mf
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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6. Digital soil mapping using multiple logistic regression on terrain parameters in Southern Brazil / Mapeamento digital de solos utilizando regressões logísticas múltiplas e parâmetros do terreno no sul do Brasil
Os levantamentos de solos são fontes de informação necessárias para o planejamento de uso das terras, entretanto eles nem sempre estão disponíveis. Este estudo propõe o uso de regressões logísticas múltiplas na predição de ocorrência de classes de solos a partir de áreas de referência. Baseado no mapa original de solos em formato digital e par
Publicado em: 2010
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7. Comparação de métodos de mapeamento digital de solos através de variáveis geomorfométricas e sistemas de informações geográficas
Mapas pedológicos são fontes de informações primordiais para planejamento e manejo de uso do solo, porém apresentam altos custos de produção. A fim de produzir mapas de solos a partir de mapas existentes, o presente trabalho objetiva testar e comparar métodos de classificação em estágio único (regressões logísticas múltiplas multinomiais e Bay
Publicado em: 2010
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8. Physiographic characterization of the Antas River hydrographic basin, Poços de Caldas Plateau, MG / Caracterização fisiografica e avaliação hidrologica na bacia do Ribeirão das Antas, Planalto de Poços de Caldas, MG
The objective of this paper is to determine some physiographical parameters regarding the Antas River Basin, Poços de Caldas Plateau, presenting one set technical information essential to the water resources management. Hydrographic basin dimensional values are quantitative parameters that allow the elimination of certain subjectivity from basin characteriz
Publicado em: 2008
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9. A novel antena for airborne radar : tridimensional Yagi / Um novo tipo de antena para radar aerotransportado : Yagi tridimensional
Embedded systems using Synthetic Aperture Radar (SAR), in orbital or airborne platforms, have often been used for remote sensing. When these systems are applied to vegetal cover and biomass studies, signals with frequency above 1 GHz do not properly penetrate in the vegetation. On the other hand, the use of signals with frequencies in P band (400 MHz) allows
Publicado em: 2008
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10. Mapeamento geomorfolÃgico e de processos erosivos da bacia hidrogrÃfica do rio Botafogo â PE utilizando tÃcnicas de geoprocessamento
This work presents the result of geomorphological and sedimentlogical studies and also erosion processes at the Botafogo Watershade, located 40 km north of Recife, Pernambuco State, Northeastern Brazil. In order to treat and analyse cartographic charts and remote sensing products , geoprocessing techniques were used. The data were validated and taken togethe
Publicado em: 2008
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11. Tthe evaluation of different methods employed in landslide risk analysis: the application of a methodological proposal in Ubatuba, SP / Avaliação de metodologias de análise de risco a escorregamentos: aplicação de um ensaio em Ubatuba,SP
The main objective of this research was the evaluation of different methods employed in landslide risk analysis and the application of a methodological proposal of landslide risk evaluation based on terrain evaluation techniques. These techniques present an approach of integrated geoenvironmental factors and have the purpose of contributing to the prevention
Publicado em: 2007
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12. Acquisition and processing of morphometric parameters derivatives from SRTM model / Aquisição e processamento de dados morfométricos derivados do modelo digital de elevação SRTM
SRTM data is distributed at horizontal resolution of 1arcsec (aprox. 30m) for areas within the USA and at 3arcsec (aprox. 90m) resolution for the rest of the world. A 90m resolution can be considered suitable for small or medium-scale analysis, but it is too coarse for more detailed purposes. One alternative is to interpolate the SRTM data at a finer resolut
Publicado em: 2007