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	Provedor de dados AgEcon (2) Autor Balcombe, Kelvin George (1) Du, Xiaodong (1) Hennessy, David A. (1) Salois, Matthew J. (1) Tiffin, J. Richard (1) Yu, Cindy L. (1) Mais... Palavra-chave Quantile regression. (2) Research Methods/ Statistical Methods (2) Agricultural and Food Policy (1) C11 (1) C14 (1) C21 (1) C23 (1) Calorie and nutrient consumption (1) Crop Production/Industries (1) Crop insurance (1) Food Consumption/Nutrition/Food Safety (1) Food Security and Poverty (1) Food and nutrition policy (1) Gibbs sampler (1) Income elasticities (1) International Development (1) Just and Pope technology (1) Negative skewness (1) Nonparametric (1) O10 (1) Mais... Tipo do documento Conference Paper or Presentation (1) Working or Discussion Paper (1) Ano 2011 (1) 2010 (1) País United States (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Testing Day’s Conjecture that More Nitrogen Decreases Crop Yield Skewness AgEcon Du, Xiaodong; Hennessy, David A.; Yu, Cindy L.. While controversy surrounds skewness attributes of typical yield distributions, a better understanding is important for agricultural policy assessment and for crop insurance rate setting. Day (1965) conjectured that crop yield skewness declines with an increase in low levels of nitrogen use, but higher levels have no effect. In a theoretical model based on the law of the minimum (von Liebig) technology, we find conditions under which Day’s conjecture applies. Employing four experimental plot datasets, we investigate the conjecture by introducing (a) a flexible Bayesian extension of the Just-Pope technology to incorporate skewness, and (b) a quantile-based measure of skewness shift. For corn yields, the Bayesian estimation provides strong evidence in favor... Tipo: Working or Discussion Paper Palavras-chave: Crop insurance; Gibbs sampler; Just and Pope technology; Negative skewness; Quantile regression.; Crop Production/Industries; Political Economy; Research Methods/ Statistical Methods; Risk and Uncertainty. Ano: 2010 URL: http://purl.umn.edu/93471 Impact of Income on Calorie and Nutrient Intakes: A Cross-Country Analysis AgEcon Salois, Matthew J.; Tiffin, J. Richard; Balcombe, Kelvin George. The relationship between income and nutrient intake is explored. Nonparametric, panel, and quantile regressions are used. Engle curves for calories, fat, and protein are approximately linear in logs with carbohydrate intakes exhibiting diminishing elasticities as incomes increase. Elasticities range from 0.10 to 0.25, with fat having the highest elasticities. Countries in higher quantiles have lower elasticities than those in lower quantiles. Results predict significant cumulative increases in calorie consumption which are increasingly composed of fats. Though policies aimed at poverty alleviation and economic growth may assuage hunger and malnutrition, they may also exacerbate problems associated with obesity. Tipo: Conference Paper or Presentation Palavras-chave: Calorie and nutrient consumption; Food and nutrition policy; Income elasticities; Nonparametric; Panel; Quantile regression.; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Development; Research Methods/ Statistical Methods; C11; C14; C21; C23; O10; O47; Q18. Ano: 2011 URL: http://purl.umn.edu/103647 Registros recuperados: 2 Primeira ... 1 ... Última

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