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| Registros recuperados: 26 | |
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| Cook, Steven. |
| The recently examined durability-asymmetry hypothesis of Cook (1999) is re-evaluated using the diagnostic tests of time deformation proposed by Stock (1987, 1988). An application of these tests to disaggregated data on U.S. consumers’ expenditure provides further support for this hypothesis, with the findings given an economic interpretation in terms of variables evolving at differing speeds over different phases of the business cycle. Additionally, building upon the studies of Cover (1992), Karras (1996) and Rhee and Rich (1995), recent research by Arden et al. (2000) has shown the relaxation of the assumptions of linearity and symmetry typically employed in macroeconometric models to result in monetary policy having clear asymmetric effects on the... |
| Tipo: Journal Article |
Palavras-chave: Time deformation; Asymmetry; Non-linearity; Consumers’ expenditure; Consumer/Household Economics; C12; E32. |
| Ano: 2003 |
URL: http://purl.umn.edu/43990 |
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| Veeman, Michele M.; Li, Yu. |
| This project applies statistical models to analyse the relative importance ratings for selected food risk issues given in January 2003 by a representative cross-Canada sample of consumers. Ratings for environmental risks that may be associated with agriculture are also assessed. Results of ordered probit econometric models that analyze the influence of respondent's socio-economic and demographic characteristics on food and environmental risk ratings indicate that these are influenced by gender, age, income, employment and location of residence. Males tended to choose lower risk ratings; residents of Quebec tended to give higher risk ratings to most of the queried food and environmental safety issues. The results suggest that measures of trust in... |
| Tipo: Report |
Palavras-chave: Food safety; Environmental risks; Risk perceptions; Quantitative assessment; Food Consumption/Nutrition/Food Safety; C12; D12; I19; Q18. |
| Ano: 2006 |
URL: http://purl.umn.edu/91557 |
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| Tumusiime, Emmanuel; Brorsen, B. Wade; Mosali, Jagadeesh; Johnson, Jim; Locke, James; Biermacher, Jon T.. |
| The parameters of yield response functions can vary by year. Past studies usually assume yield functions are nstochastic ‘‘limited’’ stochastic. In this study, we estimate rye– ryegrass yield functions in which all parameters are random. The three functional forms considered are the linear response plateau, the quadratic, and the Spillman-Mitscherlich. Nonstochastic yield models are rejected in favor of stochastic parameter models. Quadratic functional forms fit the data poorly. Optimal nitrogen application recommendations are calculated for the linear response plateau and Spillman-Mitscherlich. The stochastic models lead to smaller recommended levels of nitrogen, but the economic benefits of using fully stochastic crop yield functions are small because... |
| Tipo: Journal Article |
Palavras-chave: Cereal rye–ryegrass; Monte Carlo; Nitrogen; Random parameters; Stochastic plateau; Production Economics; Q10; C12; D24. |
| Ano: 2011 |
URL: http://purl.umn.edu/117949 |
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| Uaiene, Rafael N.; Arndt, Channing. |
| This article provides estimates of farm household efficiency and its determinants among smallholder farmers in Mozambique. A translog stochastic frontier production function and a first difference model incorporating a model of farm household inefficiency effects are applied to test the existence of agricultural farm household inefficiencies and their determinants in Mozambique. The null hypothesis of equal farm household efficiency among households was rejected. Variation in farm household efficiency indicates that access to agricultural technology is a severe constraint for most farm households. Factors such as access to advisory services, access to rural credit, membership to an agricultural association, use of improved agricultural technology... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Stochastic frontier analysis; Farm production efficiency; Productivity Analysis; C12; C13. |
| Ano: 2009 |
URL: http://purl.umn.edu/51438 |
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| Kristofersson, Dadi; Rickertsen, Kyrre. |
| Fishers in quota-regulated fisheries find it to their advantage to discard less valuable fish at sea to increase the value of their catch. A theoretical model describing the high-grading behavior of fishers is presented, and an empirical model is derived as well as a testing strategy to test for high-grading and to estimate the discarded amount of each grade. The model is applied to data for the Icelandic quota regulated cod fishery during the period September 1998 to June 2001. The results indicate that highgrading occurs in the Icelandic cod fishery for both long-line and net vessels. However, the discard rates are small, and the results clearly suggest that the ban on discards in Iceland has effectively dealt with high-grading. The estimated discard... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: ITQ's; Highgrading; Empirical estimation; Resource /Energy Economics and Policy; Q21; Q22; C12. |
| Ano: 2005 |
URL: http://purl.umn.edu/24722 |
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| Registros recuperados: 26 | |
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