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	Provedor de dados AgEcon (2) CIGR Journal (1) PAB (1) Autor Bontemps, Christophe (1) Burrell, Alison M. (1) Castillo, Bernardo (1) França,José Alexandre de (1) Igarashi,Seiji (1) Igarashi,Wagner Teigi (1) Orozco, Valerie (1) Requillart, Vincent (1) Saab,Otávio Jorge Grigoli Abi (1) Silva,Marcelo Augusto de Aguiar e (1) Mais... Palavra-chave Empirical models (4) Agricultural and Food Policy (1) Agricultural mechanization (1) D40 (1) Demand and Price Analysis (1) Food products (1) Glycine max (1) L81 (1) Leaf wetness sensors (1) Mechanization. (1) Percentage of leaf wetness (1) Pricing (1) Private labels (1) Q13 (1) Quantitative integrated assessment (1) Soils (1) Teaching/Communication/Extension/Profession (1) Traction. traction (1) Tractors (1) “black box” (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Conference Paper or Presentation (1) Journal Article (1) Ano 2018 (1) 2015 (1) 2008 (1) 2005 (1) País United States (2) Brazil (1) China (1) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Estimation of soybean leaf wetness from meteorological variables PAB Igarashi,Wagner Teigi; Silva,Marcelo Augusto de Aguiar e; França,José Alexandre de; Igarashi,Seiji; Saab,Otávio Jorge Grigoli Abi. Abstract: The objective of this work was to determine models for the estimation of leaf wetness percentage at three heights in the soybean (Glycine max) canopy, using meteorological variables from stations installed at the crop site and at an agrometeorological station. The experiment was conducted in three harvest seasons, in an area cropped with soybean, in the municipality of Londrina, in the state of Paraná, Brazil. To collect the meteorological variables, electronic trees were installed at four heights (0.3, 0.6, 0.9, and 1.7 m) in the crop and a station was installed in an agrometeorological station. The data were separated according to days with and without rain, and the analyses of correlation and of simple and multiple regressions were carried... Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Empirical models; Leaf wetness sensors; Percentage of leaf wetness. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001001087 Confirming the Price Effects of Private Labels Development AgEcon Bontemps, Christophe; Orozco, Valerie; Requillart, Vincent. We study the price response of national brands to the development of private labels. We use monthly data from a consumer survey reporting their purchases for 218 food products. We show that when private labels have a significant effect on national brands prices (144 cases over 218), that is positive (89%). We also show that the increase in the prices of national brand products is explained by a strategy of product differentiation. Finally, price reaction of national brands differs with the type of private labels they are facing. This paper confirms, on a larger number of products, previous empirical results. Tipo: Conference Paper or Presentation Palavras-chave: Private labels; Pricing; Empirical models; Food products; L81; Q13; D40; Demand and Price Analysis. Ano: 2005 URL: http://purl.umn.edu/24735 Art or science? The challenges of publishing peer reviewed papers based on linked models AgEcon Burrell, Alison M.. The methodology used in a linked model system is generally too voluminous and of insufficient interest to form the basis of a peer-reviewed journal article. To be readily acceptable to an economics journal, the simulation results should provide economic insight and contribute to the economics literature. Tipo: Journal Article Palavras-chave: Quantitative integrated assessment; Empirical models; “black box”; Agricultural and Food Policy; Teaching/Communication/Extension/Profession. Ano: 2008 URL: http://purl.umn.edu/97712 Evaluation of five traction models for agricultural tractors in Colombia CIGR Journal Castillo, Bernardo. The behavior of traction devices of agricultural tractors has been modeled by analytical techniques and through the use of empirical equations, the latter methodology has shown good results and numerous applications. This article presented the evaluation of four empirical traction models and one semi-empirical in order to establish the model that best fit to Colombian agricultural soil mechanization and to propose a tool that better assess the traction behavior of tractors in the field. Taking into account all terrains conditions evaluated, the model that best adjusted was the Gee-Clough and collaborators model and it was possible to explain the 90% of the draft forces measured. Also the model of Evans and others, using improved prediction coefficients of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural mechanization; Tractors; Traction. traction; Empirical models; Tractors; Soils; Mechanization.. Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3369 Registros recuperados: 4 Primeira ... 1 ... Última

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