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A Hedonic Analysis on the Implicit Values of Fresh Tomatoes AgEcon
Huang, Chung L.; Lin, Biing-Hwan.
The food habits and dietary patterns of American consumers are changing and they are increasingly demanding food products that possess certain attributes relating to how the food was produced or processed. The objectives of the study are to analyze household purchase of fresh tomatoes and to determine the magnitudes of the price premium paid for the organic tomatoes by estimating a hedonic price model. The study uses the 2003 ACNielsen Homescan panel data. The data set represents a nationally representative panel of U.S. households, which provide food purchase data for at-home consumption. For empirical implementation, parameters of the hedonic model were estimated using the Box-Cox transformation procedure. The results indicated that consumers value the...
Tipo: Conference Paper or Presentation Palavras-chave: Box-Cox transformation; Fresh tomatoes; Hedonic price; Organic produce; Product attributes; Crop Production/Industries; D1; Q11.
Ano: 2006 URL: http://purl.umn.edu/25404
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A hedonic approach to estimating the supply of variety attributes of a subsistence crop AgEcon
Edmeades, Svetlana.
The paper extends the household hedonic model, as a non-market valuation tool, by estimating a supply function for variety attributes of a subsistence crop in a developing country. The model is applied to bananas in Uganda, making use of disaggregated data on variety-specific farm-gate banana bunch prices and attributes. The hedonic analysis is applied at the farm-gate, the first link in the market chain, while accounting for the semi-subsistence nature of banana producing households. Within the framework of the agricultural household, where consumption and production decisions are non-separable, prices reflect the implicit marginal valuation of both consumption and production attributes jointly. The paper is motivated by the need to quantify the value of...
Tipo: Report Palavras-chave: Small farms; Households models; Agricultural sector; Crops; Economic aspects; Crop diversification; Variety attributes; Decision making; Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/55424
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A history of Argentina in the twentieth century Buscador Latinoamericano
Luis Alberto Romero; Romero, Luis Alberto.
Tipo: Text Palavras-chave: ARGENTINA; HISTORIA; SIGLO XX.
Ano: 2006 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=109988&tab=opac&oai:flacso.org.ec:109988
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A importância do agronegócio familiar no Brasil Rev. Econ. Sociol. Rural
Guilhoto,Joaquim J. M.; Silveira,Fernando G.; Ichihara,Silvio M.; Azzoni,Carlos R..
Este trabalho teve por objetivo avaliar o nível de atividade do agronegócio da agricultura familiar no Brasil, para o período de 1995 a 2003. Através dos Modelos de Insumo-Produto foi possível estimar a importância do Produto Interno Bruto do agronegócio familiar no contexto nacional. Concretamente, os resultados demonstram que cerca de 1/3 do agronegócio brasileiro advém da produção agropecuária realizada pelos agricultores familiares, cabendo observar, também, que o desempenho recente da agropecuária familiar e de todo o complexo a ela articulada vem sendo bastante positivo, superando, inclusive, as taxas de crescimento relativas ao segmento patronal.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronegócio familiar; Produto Interno Bruto; Brasil; Insumo-produto.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032006000300002
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A incubação de empresas como processo de transferência de tecnologias. Infoteca-e
MODESTO JUNIOR, M. de S..
bitstream/item/43264/1/Doc.272.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Incubação de empresa.; Agronegócio; Transferência de Tecnologia..
Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/903057
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A infestação da vegetação arbórea do Passeio Público de Curitiba, Paraná, por erva-de-passarinho: um estudo de caso. Infoteca-e
ROTTA, E.; ARAUJO, A. J. de; OLIVEIRA, Y. M. M. de.
Foi analisada a infestação por erva-de-passarinho na população arbórea do Passeio Público de Curitiba,PR. No local predomina a vegetação arbórea nativa, correspondendo a 68% da composição florística total de 130 espécies de árvores nativas e exóticas. Essa predominância se repete, também, em relação ao número de indivíduos encontrados (60%) na população, que possui um total de 1.865 árvores. Três espécies de erva-de-passarinho ocorrem no local, infestando os troncos, copas e galhos das árvores: Tripodanthus acutifolius, Struthanthus vulgaris e Struthanhus polyrhysus, predominando a primeira espécie. Cerca de 14% da vegetação arbórea do Passeio Público encontra-se infestada por erva-de-passarinho, apresentando algum nível de infestação por uma das três...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Mistletoe; Muérdago; Gui; Parasita; Arborização urbana; Curitiba; Espécie exótica; Erva-de-passarinho.; Manejo..
Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/284775
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A INSERÇÃO ECONÔMICA DA COOPERATIVA AGROINDUSTRIAL LAR E SEUS REFLEXOS NA ARRECADAÇÃO DE ICMS, DOS MUNICÍPIOS ONDE MANTÉM SUAS PLANTAS INDUSTRIAIS AgEcon
Uribe-Opazo, Miguel Angel; Birck, Luiz Gilberto; Gimenes, Regio Marcio Toesca.
This article presents an analysis of the insertion into the process of agroindustrialization of LAR Agroindustrial Cooperative from the municipality of Medianeira (State of Paraná) and its effect on the collection of ICMS (Tax on Transfer of Goods and on Transport Services Interstate, Intercity, and on Communication) in the cities where the cooperative has manufacturing plants for the period ranging from 2000 to 2004. The methodology used was documentary research and case study. The results of the research reveal that LAR Agroindustrial Cooperative has positively contributed to ICMS collection in the municipalities of Medianeira, Itaipulândia, Missal, Matelândia, Céu Azul, and Santa Helena.
Tipo: Journal Article Palavras-chave: Agricultural processing; Regional development; ICMS..
Ano: 2006 URL: http://purl.umn.edu/43803
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A irrigação de pomares cítricos em Sergipe. Infoteca-e
RESENDE, R. S..
bitstream/item/26149/1/f-18.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Citricultura; Irrigação; Pomar..
Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/875025
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A la vanguardia del desarrollo reflexiones desde el Banco Mundial Buscador Latinoamericano
ed. por Indermit S. Gill; Todd Pugatch.
Tipo: Text Palavras-chave: BANCO MUNDIAL; FINANZAS INTERNACIONALES.
Ano: 2006 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=115752&tab=opac&oai:flacso.org.ec:115752
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A Lagrangian analysis of the Indian-Atlantic interocean exchange in a regional model - art. no. L14611 ArchiMer
Doglioli, Andrea; Veneziani, M; Blanke, Bruno; Speich, Sabrina; Griffa, A.
We present a new numerical Lagrangian technique based on the coupling of transport computation with spin analysis of trajectories. This method was applied to results from a high-resolution numerical model of the oceanic region around South Africa. We estimated an Indian-Atlantic leakage of about 14 Sv. In the western Cape Basin, approximately 30% of this transport is due to trapping eddies with a ratio between cyclones and anticyclones transport of 1.3. These findings are briefly discussed with respect to recent observations of the highly nonlinear regime found in this area of the Cape Basin.
Tipo: Text Palavras-chave: Anticyclones transport; Cyclones transport; The Indian Atlantic interocean exchange; South Africa; Numerical model.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1847.pdf
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A large multi-pathogen waterborne community outbreak linked to faecal contamination of a groundwater system, France, 2000 ArchiMer
Gallay, A; De Valk, H; Cournot, M; Ladeuil, B; Hemery, C; Castor, C; Bon, F; Megraud, F; Le Cann, Pierre; Desenclos, Jc.
A large waterborne outbreak of infection that occurred during August 2000 in a local community in France was investigated initially via a rapid survey of visits to local physicians. A retrospective cohort study was then conducted on a random cluster sample of residents. Of 709 residents interviewed, 202 (28.5%) were definite cases (at least three liquid stools/day or vomiting) and 62 (8.7%) were probable cases (less than three liquid stools/day or abdominal pain). Those who had drunk tap water had a three-fold increased risk for illness (95% CI 2.4-4.0). The risk increased with the amount of water consumed (chi-square trend: p < 0.0001). Bacteriological analyses of stools were performed for 35 patients and virological analyses for 24 patients....
Tipo: Text Palavras-chave: Waterborne outbreak; Rotavirus; Norovirus; Gastroenteritis; Epidemiology; Campylobacter coli.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1696.pdf
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A Lender's Perspective on Contract Poultry Production (Power Point Presentation) AgEcon
Bounds, Kenny.
Tipo: Conference Paper or Presentation Palavras-chave: Livestock Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/33276
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A Limited Dependent Variable Analysis of Integrated Pest Management Adoption in Uganda AgEcon
Kasenge, Valentine; Taylor, Daniel B.; Bonabana-Wabbi, Jackline.
In Uganda overall crop loss due to pests exceeds that caused by drought, soil infertility, or poor planting material. Integrated Pest Management (IPM) technologies can reduce pest damage to crops by emphasizing non-chemical control methods thereby reducing potential negative effects of chemicals on the environment while preserving profitability. This study investigates the adoption of eight IPM practices including intercropping, crop rotation, two improved varieties, incorporating an '‘exotic weed chaser'’, optimal planting dates, optimal planting density and fertilizer use. Variables include market forces, social factors, management factors, and technology delivery mechanisms. Results were consistent across the multivariate logit and ordered logit...
Tipo: Conference Paper or Presentation Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2006 URL: http://purl.umn.edu/21040
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A link between the hippocampal and the striatal memory systems of the brain Anais da ABC (AABC)
Rossato,Janine I.; Zinn,Carolina G.; Furini,Cristiane; Bevilaqua,Lia R.M.; Medina,Jorge H.; Cammarota,Martín; Izquierdo,Iván.
Two major memory systems have been recognized over the years (Squire 1987): the declarative memory system, which is under the control of the hippocampus and related temporal lobe structures, and the procedural or habit memory system, which is under the control of the striatum and its connections. Most if not all learning tasks studied in animals, however, involve either the performance or the suppression of movement; this, if learned well, may be viewed as having become a habit. It is agreed that memory rules change from their first association to those that take place when the task is mastered. Does this change of rules involve a switch from one memory system to another? Here we will comment on: 1) reversal learning in the Morris water maze (MWM), in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hippocampus; Striatum; Declarative memory; Procedural memory; Habits; Learning.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300011
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A Look at Food Price Elasticities and Flexibilities AgEcon
Huang, Kuo S..
The matrices of food price elasticities and flexibilities derived from a complete food demand system approach are theoretical consistent and reciprocal with each other. The statistical estimates, however, show that by using the inverted elasticities to represent flexibilities or vice versa, cause sizable measurement errors. For agricultural policy and program analyses, directly estimated food price elasticities and flexibilities should be used.
Tipo: Conference Paper or Presentation Palavras-chave: Demand and Price Analysis.
Ano: 2006 URL: http://purl.umn.edu/25572
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A los amigos invisibles visiones de Arturo Uslar Pietri Buscador Latinoamericano
comp. por Laura Febres.
Tipo: Text Palavras-chave: LITERATURA VENEZOLANA; SIGLO XX; HISTORIA.
Ano: 2006 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=122718&tab=opac&oai:flacso.org.ec:122718
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A Marketing Systems Approach to Removing Distribution Barriers Confronting Small-Volume Fruit and Vegetable Growers AgEcon
Hall, Charles R.; Brooker, John R.; Eastwood, David B.; Epperson, James E.; Estes, Edmund A.; Woods, Timothy A..
Tipo: Journal Article Palavras-chave: Crop Production/Industries; Marketing; L11; L25.
Ano: 2006 URL: http://purl.umn.edu/94364
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A Market-Window Analysis for Crown-Cut Broccoli Produced in Southwest Virginia AgEcon
Dillard, John; Kmak, Heather; Russ, M.J.; Coale, Charles W., Jr.; Bratsch, Tony; Reaves, Dixie Watts.
This research determines the profitability for farmers of marketing film-wrapped Crown-Cut broccoli in Southwest Virginia. Historical price data was collected in three eastern terminal markets (Atlanta, Baltimore, and Philadelphia) for Crown-Cut and bunched broccoli from October 1998 to January 2005. Cost-of-production budgets were estimated for Crown-Cut broccoli. The economic data was entered into a market window analysis and the profitability of each market was evaluated. The profitability of Crown-Cut broccoli was illustrated by market-window graphics. Market windows were generated using an analysis platform developed by Kalo (1998). The profitability estimates were calculated by posting historical market prices by week in a Microsoft Excel spreadsheet...
Tipo: Journal Article Palavras-chave: Crop Production/Industries; Marketing.
Ano: 2006 URL: http://purl.umn.edu/8553
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A Mata Geweke–Hajivassiliou–Keane multivariate normal simulator AgEcon
Gates, Richard.
An accurate and efficient numerical approximation of the multivariate normal (MVN) distribution function is necessary for obtaining maximum likelihood estimates for models involving the MVN distribution. Numerical integration through simulation (Monte Carlo) or number-theoretic (quasi–Monte Carlo) techniques is one way to accomplish this task. One popular simulation technique is the Geweke–Hajivassiliou–Keane MVN simulator. This paper reviews this technique and introduces a Mata function that implements it. It also computes analytical first-order derivatives of the simulated probability with respect to the variables and the variance–covariance parameters.
Tipo: Journal Article Palavras-chave: GHK; Maximum simulated likelihood; Monte Carlo; Quasi–Monte Carlo; Importance sampling; Number-theoretic statistics; Research Methods/ Statistical Methods.
Ano: 2006 URL: http://purl.umn.edu/117569
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A mathematical model for growth in weight of silver catfish (Rhamdia quelen) (Heptapteridae, Siluriformes, Teleostei) Ciência Rural
Benaduce,Ana Paula da Silva; Rodrigues,Luiz Alberto Díaz; Mistro,Diomar Cristina; Baldisserotto,Bernardo.
The use of a mathematical model applied to biological science helps to predict the specific data. Based on biological data (weight and age) of silver catfish, Rhamdia quelen, a mathematical model was elaborated based on a nonlinear difference equation to demonstrate the relationship between age and growth in weight. Silver catfish growth was described following the Beverton-Holt model Pt+1 = (r Pt) / (1+ a Pt ), where r > 0 is the maximum growth rate and a > 0 is a constant of growth inhibition. The solution of this equation is Pt= 1 /{[1/P0 - a / (r-1)] 1/r t + a/ (r-1)}, were P0 is the initial weight of the fish. Through this model it was observed that the female reaches the theoretical maximum weight approximately at the age of 18 years and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nonlinear difference equation; Teleost; Weight-at-age; Growth.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000500042
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