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| Registros recuperados: 337 | |
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| Mo, Lijia. |
| This study examined whether the efficiency measures were invariant to choice of parametric and nonparametric methods for a sample of 183 wheat farms. The efficiency measures from the deterministic parametric method were smaller than those from the deterministic method. There was a trade-off between scale efficiency and economic efficiency. In the deterministic nonparametric method, the economic efficiency, scale efficiency and overall efficiency results were invariant to the number of inputs or the dimensionality. Only allocative and pure technical efficiency measures depended on the dimensionality. This work illustrated the importance of holding curvature for the cost function in stochastic frontier results. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Efficiency analysis; Deterministic nonparametric method; Parametric stochastic frontier; Production Economics; Q11. |
| Ano: 2009 |
URL: http://purl.umn.edu/56427 |
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| 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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| Walsh, Marie E.; Torre Ugarte, Daniel de la; English, Burton C.; Jensen, Kimberly L.; Hellwinckel, Chad M.; Menard, R. Jamey; Nelson, Richard G.. |
| Analysis of the potential to supply 25% of projected 2025 U.S. transportation fuels indicates sufficient biomass resources are available to meet increased demand while simultaneously meeting food, feed, and export needs. Corn and soybeans continue to be important feedstocks for ethanol and biodiesel production, but cellulose feedstocks (agricultural crop residues, energy crops such as switchgrass, and forestry residues) will play a major role. Farm income increases, mostly because of higher crop prices. Increased crop prices increase the cost of producing biofuels. |
| Tipo: Journal Article |
Palavras-chave: Biodiesel; Biofuels; Biomass; Cellulose feedstocks; Crop residues; Ethanol; Forest residues; Switchgrass; Agribusiness; Resource /Energy Economics and Policy; O11; Q11; Q41. |
| Ano: 2007 |
URL: http://purl.umn.edu/6514 |
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| Josling, Timothy E.; Valdes, Alberto. |
| This paper outlines a methodological approach for use by FAO to collect, analyze and monitor agricultural policy indicators (API) for developing countries. The aim is to establish a consistent and comparable set of policy indicators, allowing analysts to examine whether agriculture in particular countries is being stimulated or retarded by the set of policies employed. The API should also be useful in the context of quantitative models of policy impacts and market projections. Ideally, the indicators should function as building blocks for the more comprehensive policy measurement. This paper is presented in four parts. Part I gives an overview of the rationale for monitoring, the relationship between policy monitoring, quantitative modeling and evaluation,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agricultural policy; Trade and development; Policy indicators; Domestic support; Agricultural and Food Policy; Q11; Q17; Q18; O10; O19. |
| Ano: 2004 |
URL: http://purl.umn.edu/23789 |
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| Hopper, Jared A.; Peterson, Hikaru Hanawa; Burton, Robert O., Jr.. |
| Price-quality relationships for alfalfa hay were analyzed by hedonic pricing models using 1996-2001 Wisconsin auction data. Individual nutrients included in the analysis all affected alfalfa price, with acid detergent fiber accounting for the largest impact. Alternative pricing models, based on an aggregate quality index or detailed quality information, were similar in their ability to predict price. However, disaggregating price predictions to account for differences in relative feed value (RFV) and crude protein (CP) indicate that both RFV and CP are important determinants of price and that aggregating the two into a quality index is not warranted. |
| Tipo: Journal Article |
Palavras-chave: Aggregate index; Alfalfa; Auction data; Hedonic pricing models; Quality; Q11. |
| Ano: 2004 |
URL: http://purl.umn.edu/43462 |
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| Davis, Christopher G.; Blayney, Donald P.; Cooper, Joseph C.; Yen, Steven T.. |
| This study examines retail fluid milk products purchase data from Nielsen 2005 home scan data. The demand for seven categories of fluid milk products were estimated: whole milk, whole flavored milk, reduced fat milk, flavored reduced fat milk, buttermilk, canned milk and all other fluid milk products. Analyses of the purchases of seven fluid milk categories based on the Nielsen 2005 home scan retail data are used to determine the roles marital status, age, race, education, female employment status and location play in the empirical estimations of aggregate demand elasticities. To derive the demand elasticities, a censored translog demand system is used. The results reveal that price and income are the main determinants of demand for fluid milk products... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Nielsen home scan retail data; Milk demand; Elasticities; Fluid milk; Reduced fat milk; Whole milk; Flavored milk; Canned milk; Buttermilk; Non-linear AIDS; Censored translog demand system; Consumer/Household Economics; Demand and Price Analysis; C25; D12; Q11. |
| Ano: 2009 |
URL: http://purl.umn.edu/51791 |
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| Parcell, Joseph L.; Mintert, James R.; Plain, Ronald L.. |
| An inverse live-hog model was estimated to analyze whether there has been a recent increase in the magnitude of live-hog, own-quantity demand flexibility. Estimating the impact of processing capacity-utilization rate changes on live-hog prices was a second objective of this research. Results indicate that live hog prices have become more responsive to changes in hog slaughter, slaughter weight, cold storage stocks, and changes in the processing capacity-utilization rate. Finally, model results indicate that the sharp increase in processing capacity-utilization rates, the increase in average dressed weight, and the increase in hog slaughter all had a negative effect on the live-hog prices. |
| Tipo: Journal Article |
Palavras-chave: Capacity utilization; Live hog demand; Structural change; Q11; Q12; Q13; D40. |
| Ano: 2004 |
URL: http://purl.umn.edu/43476 |
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| Egelkraut, Thorsten M.; Garcia, Philip; Irwin, Scott H.; Good, Darrel L.. |
| Using 1971-2000 data, we examine the accuracy of corn and soybean production forecasts provided by the USDA and two private agencies. All agencies improved their forecasts as the harvest progressed, and forecast errors were highly correlated and unbiased. The relative forecast accuracy of the agencies varied by crop and month. For corn, USDA’s forecasts ranked as most accurate of the three agencies in all periods except for august during the recent period and improved most markedly as harvest progressed. For soybeans, forecast errors were very similar, with the private agencies ranking as most accurate for August and September and making largest relative improvements for August during the recent period. The USDA forecasts were dominant for October and... |
| Tipo: Journal Article |
Palavras-chave: Corn; Private agencies; Production forecasts; Soybeans; USDA; Q11; Q13; C82; Q18. |
| Ano: 2003 |
URL: http://purl.umn.edu/37835 |
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| Registros recuperados: 337 | |
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