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A PROGRAMMING APPROACH TO ESTIMATE PRODUCTION FUNCTIONS USING BOUNDS ON THE TRUE PRODUCTION SET AgEcon
Lambert, David K..
Varian (1984) developed procedures to establish bounds on a true convex negative monotonic production set that p-rationalizes a set of data consistent with the weak axiom of profit maximization. These bounds can provide additional information for estimating parametric production functions. A mathematical programming procedure is developed to maximize various measures of goodness of fit of alternative parametric specifications relative to the true production set.
Tipo: Working or Discussion Paper Palavras-chave: Nonparametric technique; Production; Production functions; Production Economics; Research Methods/ Statistical Methods.
Ano: 1997 URL: http://purl.umn.edu/12956
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An economic analysis of rice-based cropping systems in southern Jiangsu province, China International Rice Research Institute
Zhang, Linxiu.
146 l. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Barley; Cropping systems; Economic analysis; Costs and returns; Production functions; China.
Ano: 1986 URL: http://hdl.handle.net/123456789/1358
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Análise de oferta estática a partir de funções de produção. Repositório Alice
SIMÕES, R.; ALVES, E. R. de A.; LIMA, M. L. P.; WHITE JUNIOR, T. K..
1972
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Carne bovina; Oferta; Função de produção; Governador Valadares; Minas Gerais; Brasil; Beef; Supply; Production functions.
Ano: 1972 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1068652
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Assessment of agricultural land fund in the Czech Republic, importance and future AgEcon
Voltr, Vaclav.
Assessment of land depends on the production function of soil and additional connections given by environmental requirements, by the evaluation of public goods or by the requirements for formation a fair tax policy and even by the interests of landowners. Analysis of coherences during the soil appraisal shows a relatively strong dependence on the development of year-by-year yields and cost including subsidy policy, which is strongly reflected in the grasslands. Development of subsidies does not basically influence a long- term return and costs ratio for the production on arable land. The requirements for formation of prices are given due to the need for stability of the mutual relations between the quality of soil and climatic conditions, which manifests...
Tipo: Article Palavras-chave: Soil evaluation; Land value; Production functions; Land Economics/Use; Production Economics; GA; IN.
Ano: 2011 URL: http://purl.umn.edu/120239
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Choosing an Empirical Production Function: Theory, Nonnested Hypotheses, Costs of Specifications AgEcon
Hall, Harry H..
This paper considers the specification of a production function, using crop-yield response to agricultural lime as an example. The paper first reviews neoclassical production theory, observing that this theory specifies neither the form nor the arguments of a production function. Several functions that are consistent with the theory are then evaluated by goodness-of-fit tests, by nonnested-hypothesis tests, and by "costs of misspecification." Neither goodness-of-fit tests nor nonnested-hypothesis tests provide a clear choice among the candidate functions; costs of misspecification provide some choice.
Tipo: Working or Discussion Paper Palavras-chave: Functional forms; Neoclassical production theory; Production functions; Response functions; Specification.; Production Economics.
Ano: 1998 URL: http://purl.umn.edu/31977
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Development of new method to evaluate rice productive functions based on remote-sensing technique International Rice Research Institute
Takai, Toshiyuki.
28 p. : ill. Thesis (M.S.) -- Kyoto University
Tipo: Thesis Palavras-chave: Rice; Remote sensing; Production functions; Plant growth; Yields.
Ano: 2002 URL: http://hdl.handle.net/123456789/415
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EFFECT OF AGRICULTURAL RESEARCH & DEVELOPMENT ON THE GDP OF EU MEMBER STATES AgEcon
Mohamed, Zsuzsanna; Takacs, Szabolcs; Szucs, Istvan; Bedene Szoke, Eva.
Scientific research, together with technological development and innovation, is a key issue of knowledge-based economies. Having recognized this important role, the European Union has identified the increasing of its research budget to be one of its most important aims. The objective of the common programming of agricultural research is to examine the extent to which society is able to answer the challenges resulting from the Community-level development of renewable raw materials. Joining in the spirit of these endeavours, the aim of our research is to analyze the links between agricultural R&D expenditure and agricultural GDP in the EU member states, relying on the Eurostat database. Our computations were made using constant prices of 2000. The...
Tipo: Journal Article Palavras-chave: EU; R&D intensity; Production functions; Combination of production factors; EU; K&Fintenzitás; Termelési funkciók; Termelési tényezők kombinációja; Agricultural and Food Policy; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2010 URL: http://purl.umn.edu/99202
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Growth dynamics and yield of melon as influenced by nitrogen fertilizer Scientia Agricola
Castellanos,María Teresa; Cabello,María Jesús; Cartagena,María del Carmen; Tarquis,Ana María; Arce,Augusto; Ribas,Francisco.
Nitrogen (N) is an important nutrient for melon (Cucumis melo L.) production. However there is scanty information about the amount necessary to maintain an appropriate balance between growth and yield. Melon vegetative organs must develop sufficiently to intercept light and accumulate water and nutrients but it is also important to obtain a large reproductive-vegetative dry weight ratio to maximize the fruit yield. We evaluated the influence of different N amounts on the growth, production of dry matter and fruit yield of a melon 'Piel de sapo' type. A three-year field experiment was carried out from May to September. Melons were subjected to an irrigation depth of 100% crop evapotranspiration and to 11 N fertilization rates, ranging 11 to 393 kg ha-1 in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: LAI; LAD; Dry matter accumulation; Production functions; Leaf nitrogen concentration.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200009
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Improved cultivars of pearl millet in Tamil Nadu: adoption, impact, and returns to research investment Open Agri
C..
Palavras-chave: Millets; Hybrids; Production functions; Private sector; Variable costs; Grain; Fixed costs; Sampling; Breeds (animals); Products.
Ano: 2000 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4220
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Production function estimation in Stata using inputs to control for unobservables AgEcon
Petrin, Amil; Poi, Brian P.; Levinsohn, James.
A key issue in the estimation of production functions is the correlation between unobservable productivity shocks and input levels. Profit-maximizing firms respond to positive productivity shocks by expanding output, which requires additional inputs. Negative shocks lead firms to pare back output, decreasing their input usage. Olley and Pakes (1996) develop an estimator that uses investment as a proxy for these unobservable shocks. More recently, Levinsohn and Petrin (2003a) introduce an estimator that uses intermediate inputs as proxies, arguing that intermediates may respond more smoothly to productivity shocks. This paper reviews Levinsohn and Petrin’s approach and introduces a Stata command that implements it.
Tipo: Journal Article Palavras-chave: Levpet; Production functions; Productivity; Endogeneity; GMM estimator; Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/116231
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Risk premiums and GM traits AgEcon
Nolan, Elizabeth; Santos, Paulo.
An argument in favor of the development of genetically modified (GM) hybrids is that their presence is considered to be risk decreasing. On this basis, insurance premiums for corn growers in the United States who plant approved hybrids have been reduced. In this study we investigate, using a large dataset of experimental data compiled from reports of results from experimental field trials of corn hybrids by the State Agricultural Extension Services of ten universities over 20 years, whether the presence in a corn hybrid of a GM trait, or a combination of these traits, is likely to increase or decrease risk. The effects of input use on production uncertainty can be quantified through the specification and estimation of heteroskedastic production functions...
Tipo: Conference Paper or Presentation Palavras-chave: Production functions; Yield; Risk; Skewness; Corn; Genetically modified traits; Crop Production/Industries; Risk and Uncertainty; C2; Q12; Q16.
Ano: 2011 URL: http://purl.umn.edu/103692
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Water use efficiency and economic return of fresh vegetable in organic cultivation AGRIAMBI
Carvalho,Daniel F. de; Pinto,Marinaldo F.; Monte,José A.; Mello,Gabriel A. B. de; Sousa,Camila P. de.
ABSTRACT The optimization in the use of irrigation is a necessity due to water scarcity and the increasing demand for food. The objective of this study was to evaluate the effect of different irrigation depths on the economic efficiency of lettuce, eggplant, beet and carrot, cultivated in an organic production system. The evaluations were performed based on production functions obtained in field experiments conducted from 2006 to 2011, and survey of prices of products and inputs, determining the irrigation depths corresponding to the maximum gross profit and the maximum water use efficiency. Additionally, the relative yield reduction was evaluated for different percent increments in the economically optimal irrigation depth. It was observed that the crops...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Economic analysis; Production functions; Analysis of costs; Irrigation depth.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000700637
Registros recuperados: 12
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