Irregular Field
Mostrando 1-12 de 65 artigos, teses e dissertações.
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1. Estudo das historiografias de Paul Karlson, Konstantin Ríbnikov, Howard Eves e Bento de Jesus Caraça: diferentes modos de ver e conceber o conceito de função
Resumo: Este artigo tem como objetivo apresentar parte dos estudos que foram feitos sobre as historiografias escritas pelos autores Paul Karlson, Konstantin Ríbnikov, Howard Eves e Bento de Jesus Caraça. Destacaram-se os modos de ver e conceber o conceito de função dos quatro autores. Tais estudos fazem parte de uma pesquisa de cunho teórico, caracteriz
Ciênc. educ. (Bauru). Publicado em: 20/12/2019
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2. Stem Modelling of Eucalyptus by Terrestrial Laser Scanning
ABSTRACT The objective of this work was to obtain the stem volume from 3D-cloud points generated by terrestrial laser scanning in Eucalyptus stands. The processing started with using algorithms for tree detection in plantation (TDP) and stem filtering (Filter Dmax). Then, the acquisition of the total height was made semi-automatically and tridimensional mode
Floresta Ambient.. Publicado em: 22/08/2019
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3. Wind Tunnel Investigation of the Wind Patterns in the Launching Pad Area of the Brazilian Alcântara Launch Center
ABSTRACT This paper presents a wind tunnel study of the flow patterns in the main Brazilian Space Port, the Alcântara Launch Center (ALC), located in the Northwest region, over an irregular coastal cliff of 40 m height. In the ALC region, constant winds of strong incidence are very common, which can change the characteristics of the atmospheric boundary lay
J. Aerosp. Technol. Manag.. Publicado em: 14/01/2019
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4. MEASUREMENT AND ANALYSIS OF A FIELD AREA BASED ON AN ADAPTIVE KALMAN FILTER
ABSTRACT: This paper proposed the use of an adaptive Kalman filter (AFK) to improve Global Positioning System (GPS) positioning accuracy to measure a tractor operational area. First, we used MATLAB to identify the operation trajectory. Then, we used different colors to show the area of operation. Finally, we used an image-processing method to calculate the e
Eng. Agríc.. Publicado em: 2017-09
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5. Sampling Design of Soil Physical Properties in a Conilon Coffee Field
ABSTRACT Establishing the number of samples required to determine values of soil physical properties ultimately results in optimization of labor and allows better representation of such attributes. The objective of this study was to analyze the spatial variability of soil physical properties in a Conilon coffee field and propose a soil sampling method better
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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6. 3D COMPOSITIONAL RESERVOIR SIMULATION IN CONJUNCTION WITH UNSTRUCTURED GRIDS
Abstract In the last decade, unstructured grids have been a very important step in the development of petroleum reservoir simulators. In fact, the so-called third generation simulators are based on Perpendicular Bisection (PEBI) unstructured grids. Nevertheless, the use of PEBI grids is not very general when full anisotropic reservoirs are modeled. Another p
Braz. J. Chem. Eng.. Publicado em: 2016-06
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7. LAS ASOCIACIONES DE MIGRANTES HAITIANOS EN EL ECUADOR: ENTRE DEBILIDAD Y RESISTENCIA
Abstract The Haitian associative initiatives in Ecuador have to be seen within the context generated by the 2010 earthquake in Haiti. This is a population that has been forced to migrate, but it is not considered within the parameters of protection under the Convention Relating to the Status of Refugees (1951), so they are left in lack of protection due to t
REMHU, Rev. Interdiscip. Mobil. Hum.. Publicado em: 2015-06
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8. Comparative Sensibility Study of WO3 ph Sensor Using EGFET and Ciclic Voltammetry
In this present study, the investigation about pH sensorial properties of WO3, via sol-gel, was evaluated by Voltammetry and Extended Gate Field Effect Transistor techniques. The X-ray diffractogram indicates the presence of a lamellar structure, d = 0.69 nm, resulting in WO3.2H2O. From Scanning Electron Microscopy of WO3.2H2O was observed a process correspo
Mat. Res.. Publicado em: 2015-02
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9. Field-scale spatial correlation between contents of iron oxides and CO2 emission in an Oxisol cultivated with sugarcane
Soil CO2 emission (FCO2) is one of the main sources of carbon release into the atmosphere. Moreover, FCO2 is related to soil attributes governing the transfer of gases from soil to the atmosphere. This study aimed firstly to describe the spatial variability of hematite (Hm), goethite (Gt), iron extracted with sodium dithionite-citrate-bicarbonate (Fed) conte
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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10. Gestão de recursos hídricos : o caso da ocupação do solo e uso dos recursos hídricos do setor habitacional Vicente Pires - DF
The modernization of civilization was based on a developmental model based on massive use of natural resources. Among the many problems related to urban environment, the issue of water resources is likely to be one of the most immediate, taking in the discussion regarding the development, worldwide, an increasing importance. Thus, this study aims to discuss
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2012
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11. Avaliação da distribuição da dose absorvida em radioterapia com campos irregulares e alargados / Evaluation of absorbed dose distribution in radiotherapy with irregular and extended fields
Na elaboração do planejamento do tratamento de câncer com radiações ionizantes, o médico radioterapêuta, através dos protocolos clínicos, determina a dose de radiação diária para cada tipo específico de tumor e, junto com o físico, durante os procedimentos de simulação dos campos de tratamento, fazem a localização das áreas a serem tratada
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2012
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12. A estrutura do campo magnético na Pequena Nuvem de Magalhães / The magnetic field structure at the Small Magellanic Cloud
A Pequena Nuvem de Magalhães (PNM) é uma galáxia irregular e rica em gás, que juntamente com a Grande Nuvem de Magalhães (GNM) orbita a Via Láctea (VL). Elas formam um sistema triplo em constante interação. A PNM possui metalicidade baixa, e consequentemente seu meio interestelar (MI) apresenta propriedades particularmente diferentes das observadas p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012