Navegação Ciências Exatas e da Terra por Autor "Ducati, Jorge Ricardo"
Resultados 1-16 de 16
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Algorithm for soybean classification using medium resolution satellite images
Gusso, Aníbal; Ducati, Jorge Ricardo (2012) [Artigo de periódico]An accurate estimation of soybean crop areas while the plants are still in the field is highly necessary for reliable calculation of real crop parameters as to yield, production and other data important to decision-making ... -
Assessing the MODIS crop detection algorithm for soybean crop area mapping and expansion in the Mato Grosso State, Brazil
Gusso, Aníbal; Arvor, Damien; Ducati, Jorge Ricardo; Veronez, Maurício Roberto; Silveira Junior, Luiz Gonzaga da (2014) [Artigo de periódico]Estimations of crop areaweremade based on the temporal profiles of the EnhancedVegetation Index (EVI) obtained frommoderate resolution imaging spectroradiometer (MODIS) images. Evaluation of the ability of the MODIS crop ... -
Avaliação de impacto da reforma agrária no uso e na cobertura da terra por índice de estabilidade e indicador de tendência de mudanças Roberto Kiel, Dejanira Luderitz Saldanha, Jorge Ricardo Ducati
Kiel, Roberto; Saldanha, Dejanira Luderitz; Ducati, Jorge Ricardo (2011) [Artigo de periódico]A detecção de mudanças no uso e na cobertura da terra é uma aplicação do sensoriamento remoto que utiliza a dimensão temporal para analisar imagens, buscando a identificação das alterações nas respostas espectrais dos ... -
Avaliação do impacto da resolução espacial de modelos digitais de elevação sobre a estimativa de formação de ozônio superficial usando Models-3
Meira, Lindolfo; Ducati, Jorge Ricardo; Teixeira, Elba Calesso (2009) [Artigo de periódico]Este trabalho estabelece uma comparação básica entre dois cenários distintos de simulação da formação de ozônio superficial sobre o Estado do Rio Grande do Sul. No primeiro cenário usa-se um modelo digital de elevação com ... -
Balmer line photometry of the 30 doradus nebula
Strauss, Federico Maximo; Braz, M.A.; Ducati, Jorge Ricardo (1979) [Artigo de periódico]The 30 Doradus nebula was scanned at 29 strips of constant declination with a square diaphragm of 30" x 30" using Hα and Hβ interference filters. The absolute flux calibration was obtained from observations of six planetary ... -
Intrinsic colors of stars in the near-infrared
Ducati, Jorge Ricardo; Bevilacqua, Claudio Miguel; Rembold, Sandro Barboza; Ribeiro, Daiana (2001) [Artigo de periódico]Intrinsic infrared colors of stars in the Johnson 11 color system are derived. The database is a list of 3946 stars with observations in UBV RIJHKLMN, of all spectral types and luminosity classes, including carbon, T Tauri, ... -
Macrozoneamento do Estado do Rio Grande do Sul
Guasselli, Laurindo Antônio; Saldanha, Dejanira Luderitz; Suertegaray, Dirce Maria Antunes; Ducati, Jorge Ricardo; Fontana, Denise Cybis (2006) [Artigo de periódico]Earth imaging technologies using orbital platforms have allowed new approaches in the analyses, compartmentalization, and territorial visualization. These cartographic informations have many applications in agricultural, ... -
A method for simultaneous determination of A/sub v/ and R and applications
Ducati, Jorge Ricardo; Ribeiro, Daiana; Rembold, Sandro Barboza (2003) [Artigo de periódico]A method for the simultaneous determination of the interstellar extinction (AV) and of the ratio of total to selective extinction (R), derived from the 1989 Cardelli, Clayton, & Mathis fitting of the interstellar extinction ... -
Modelos estocásticos aplicados à avaliação dinâmica da paisagem florestal de remanescentes de mata atlântica no município de Caxias do Sul-RS
Cemin, Gisele; Ducati, Jorge Ricardo (2015) [Artigo de periódico]das áreas florestais do bioma Mata Atlântica no último século. Dados oficiais apontam redução de 71% das florestas contidas nesse bioma, sendo um indicativo preocupante, uma vez que é reconhecida mundialmente como o quinto ... -
Monitoring heat waves and their impacts on summer crop development in southern Brazil
Gusso, Aníbal; Ducati, Jorge Ricardo; Veronez, Maurício Roberto; Sommer, Victor; Silveira Junior, Luiz Gonzaga da (2014) [Artigo de periódico]Periods in the soybean summer cycle that are sensitive to the occurrence of high temperatures were studied. An analysis was performed on the variability of soybean yields associated with crop canopy temperatures during key ... -
Multichromatic colour–magnitude diagrams of the globular cluster NGC 6366
Campos, Fabíola; Kepler, Souza Oliveira; Bonatto, Charles Jose; Ducati, Jorge Ricardo (2013) [Artigo de periódico]We present multichromatic isochrone fits to the colour–magnitude data of the globular cluster NGC 6366, based on Hubble Space Telescope Advanced Camera for Surveys/Wide Field Channel and Southern Astrophysical Research ... -
Near-infrared integrated spectra of Galactic globular clusters : testing simple stellar population models
Riffel, Rogério; Dutra, Daniel Ruschel; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Santos Junior, Joao Francisco Coelho dos; Bonatto, Charles Jose; Ducati, Jorge Ricardo (2011) [Artigo de periódico]We present SOAR/OSIRIS cross-dispersed near-infrared (NIR) integrated spectra of 12 Galactic globular clusters that are employed to test Maraston NIR evolutionary population synthesis models, and to provide spectral ... -
Near-infrared surface photometry of early-type galaxies
Rembold, Sandro Barboza; Pastoriza, Miriani Griselda; Ducati, Jorge Ricardo; Rubio, Monica; Roth, Miguel (2002) [Artigo de periódico]CCD infrared (JHKs) photometry was performed on a sample of 10 elliptical and 2 lenticular galaxies. Isophotal parameters, brightness profiles, integrated colors and color gradients arepresented. Color gradients found arevery ... -
Spectral model for soybean yield estimate using MODIS/EVI data
Gusso, Aníbal; Ducati, Jorge Ricardo; Veronez, Maurício Roberto; Arvor, Damien; Silveira Junior, Luiz Gonzaga da (2013) [Artigo de periódico]Attaining reliable and timely agricultural estimates is very important everywhere, and in Brazil, due to its characteristics, this is especially true. In this study, estimations of crop production were made based on the ... -
Surface temperature patterns of Lagoa dos Patos, Brazil, using NOAA-AVHRR data : an annual cycle analysis
Zanotta, Daniel Capella; Ducati, Jorge Ricardo; Gonçalves, Glauber Acunha (2010) [Artigo de periódico]A processing chain for NOAA-AVHRR data can be used to retrieve lake surface water temperatures (LSWT) measurements based on a nonlinear sea surface temperature (NLSST) algorithm generally applied to open ocean conditions. ... -
The mass ratio and initial mass functions in spectroscopic binaries
Ducati, Jorge Ricardo; Penteado, Eduardo Monfardini; Turcati, Rodrigo (2011) [Artigo de periódico]Context. Spectroscopic binaries are important in studies of binary star-formation, since original information linked to the forming stars, such as the mass ratio, can be kept in the system and observationally retrieved. ...