Satellite Imagery
Mostrando 13-24 de 78 artigos, teses e dissertações.
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13. Exploring the association between Trypanosoma cruzi infection in rural communities and environmental changes in the southern Gran Chaco
The association between land use and land cover changes between 1979-2004 in a 2.26-million-hectare area south of the Gran Chaco region and Trypanosoma cruzi infection in rural communities was analysed. The extent of cultural land, open and closed forests and shrubland up to 3,000 m around rural communities in the north, northwest and west of the province of
Memórias do Instituto Oswaldo Cruz. Publicado em: 2012-03
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14. Impacts of the Belo Monte hydroelectric dam construction on pioneer vegetation formations along the Xingu River, Pará State, Brazil
There is an important pioneer vegetation formation along the Xingu River in the area where the Belo Monte hydroelectric dam is being constructed that is highly adapted to a seasonally fluctuating water levels. The aim of this study was to examine the habitat and flora of the pioneer formations in the Belo Monte area. The area was divided in three sections fo
Braz. J. Bot.. Publicado em: 2012
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15. Data mining in large sets of complex data / Mineração de dados em grande conjuntos de dados complexos
Due to the increasing amount and complexity of the data stored in the enterprises\ databases, the task of knowledge discovery is nowadays vital to support strategic decisions. However, the mining techniques used in the process usually have high computational costs that come from the need to explore several alternative solutions, in different combinations, to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2011
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16. Mapeamento de cobertura vegetal do bioma Cerrado: estratégias e resultados.
ABSTRACT: Mapping Cerrado's vegetation cover is difficult because of its geographical extemt (~ 204,7 million hectares), high seasonality, and high spatial and temporal dynamics of its land use activities. The objective of this study was to map the vegetation cover of the Cerrado biome in the 1:250,000 scale using Landsat satellite imageries from the year of
Planaltina. Publicado em: 2011
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17. Images aerophotogrametric and orbital in determining the use and occupancy of land and Permanent Preservation Areas (PPAs) / Imagens aerofotogramétricas e orbitais na determinação do uso ecupação da terra e de áreas de preservação permanente
With this study we evaluated the result of different methodologies in determining the use and occupancy of land and permanent preservation areas using digital aerial photographs with spatial resolution of 1m (scenario 01) and satellite imagery with a spatial resolution of 0.5 m ( scenario 02), photointerpreted screen, on a scale of 1:2000 mapping, watershed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/09/2010
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18. La geología, geomorfología, pedología y uso de la tierra en las municipalidades de Puerto López (Colombia) y Uberlândia (Brasil)
On account of the precaution to raise the quality of life for people in Brazil and Colombia, isolated studies were developed to know the main human and physical resources and thus establish standards for proper management and exploitation of the territory. The aim of this study was to map and compare the geology, geomorphology, soils and land use and natural
Sociedade & Natureza. Publicado em: 2010-08
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19. Determining and mapping the beginning of summer crops cycle in the state of Parana through satellite imagery and rainfall data / Determinação e mapeamento de inicio do ciclo para culturas de verão no estado do Parana por meio de imagens de satelite e dados de precipitação
A agricultura está fortemente ligada às condições meteorológicas, tornando-se uma atividade de risco. Sendo assim, um sistema de monitoramento e previsão de safras é necessário para evitar grandes perdas. O monitoramento agrícola, aliado a estudos de varibilidade meteorológica, é de extrema importância, pois determina a melhor época em que deve
Publicado em: 2010
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20. Hidrogeomorphologic and hidrosedimentologic analyses to compare two watersheds of Itaipu reservoir / Análises hidrogeomorfológicas para comparação de duas bacias hidrográficas contribuintes do reservatório de Itaipu
The aim of this research was to perform hidrogeomorphologic and hidrosedimentologic analyses and comparing two watersheds that drain into the reservoir Itaipu: Iguatemi-MS and Piquiri-PR. The hidrogeomorphologic analyses of the watersheds comprised evaluations of the potential sediment load yield through selected morfometric parameters. The hidrosedimentolog
Publicado em: 2009
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21. Dynamic of Native forests in areas of Eucalyptus expansion in São Paulo State, Brazil / Dinâmica de florestas nativas em áreas de expansão de eucalipto no Estado de São Paulo
The expansion of the Brazilian silviculture has been developed in distinct steps, requiring a better understanding of its processes in space and time to qualify and quantify its impacts. As regards space, environmental questioning concerning the activity pushed the forestry industry for meeting environmental legislation. In Eucalyptus farms, a main concern w
Publicado em: 2009
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22. AGRO CLIMATIC ZONING FOR THE SUGAR-CANE CROP IN THE RIO GRANDE DO SUL/BRAZIL THROUGH OF THE GEOPROCESSING: CASE STUDY TO THE CONCIUL OF JAGUARI / ESTUDO DO POTENCIAL CLIMÁTICO PARA CANA-DE-AÇÚCAR (Sacharum ssp.) NO RIO GRANDE DO SUL POR MEIO DE GEOPROCESSAMENTO: ESTUDO DE CASO NO MUNICÍPIO DE JAGUARI
This work approaches an agro climatic zoning for the sugar cane crop (Sacharum ssp.) in the State of the Rio Grande do Sul Brazil through techniques of geoprocessing. The study was organized in thematic chapters including, in first, all municipalities of the State and, in a second moment, a rectangle centered in the municipality of Jaguari, main producer of
Publicado em: 2008
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23. Influência do uso da terra na incidência de processos de dinâmica superficial na região de Marília (SP)
The study area comprises the western portion of the Marília Plateau, State of São Paulo, southeastern Brazil, whose geological substrate encompasses Cretaceous sedimentary rocks of the Bauru Group and local Cenozoic units like colluvium aprons, fluvial terrace deposits, in situ regoliths, and modern alluvial deposits. In a geomorphologic sense, the study a
Publicado em: 2008
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24. Road detection over informal settlements in a suburban area of Sao Paulo city by using high resolution satellite image and a object-based classification approach. / Detecção da malha viária na periferia urbana de São Paulo utilizando imagens de alta resolução espacial e classificação orientada a objetos.
Uncontrolled sprawl occurring in large cities of developing countries requires intensive mapping efforts to update geodatabases. The intense urbanization process experienced since the 70s in Sao Paulo city illustrates very well the reported scenario. Despite aerial data and, more recent, high spatial resolution satellite data which have been employed as basi
Publicado em: 2007