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| Registros recuperados: 29 | |
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| Davis, George C.. |
| The language of economics is the language of models. Understanding the structure of this language offers many benefits. Unfortunately, the structure is ubiquitous in implementation but absent in documentation. This paper documents the structure of models in the context of the theory reduction and testing process. The structure is used to explain why there are several legitimate ways to deal with nonspherical errors in econometric models and why the recent work on stochastic preferences and technologies is a progressive step forward for the discipline. A production modeling exercise is presented to help illuminate the concepts. |
| Tipo: Journal Article |
Palavras-chave: Methodology; Models; Theory reduction; Theory testing; Venn diagrams; Research Methods/ Statistical Methods. |
| Ano: 2004 |
URL: http://purl.umn.edu/31142 |
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| Davis, George C.; Perusquia, Ernesto. |
| Many agricultural economics departments are concerned about the vitality of their Ph.D. programs. A particular problem is insufficient student numbers to justify teaching certain courses or fields. As a consequence, much faculty time can be spent debating alternative program structures without any real idea of the likelihood that a proposed program structure will succeed. This article presents a framework for deriving some analytical and empirical results for alternative Ph.D. program structures. A downloadable program is used to generate some representative results that will hopefully help others minimize speculations and time spent in committee or departmental meetings. |
| Tipo: Journal Article |
Palavras-chave: Ph.D. programs; Student numbers; Teaching/Communication/Extension/Profession; A2; Q1. |
| Ano: 2002 |
URL: http://purl.umn.edu/15076 |
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| Davis, George C.. |
| In the past two decades, the profession has expended valuable resources testing structural change in meat demand with mixed results. Overlooked to date is a fundamental methodological problem that transcends all of the methods of testing for structural change. In this study, a formal logic framework is utilized in which methodological problems associated with any hypothesis test can be analyzed. Within this framework, it is proven that there is no valid test of any single hypothesis, including structural change. Because of this result, additional criteria from the methodology literature are then used to evaluate the literature on structural change in meat demand. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Logic; Meat demand; Methodology; Structural change; Demand and Price Analysis. |
| Ano: 1997 |
URL: http://purl.umn.edu/23975 |
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| Jensen, Kimberly L.; Davis, George C.. |
| This study identifies barriers perceived by agricultural exporters and examines how these perceptions influence use of export market strategies. Ordered logit models are used to estimate effects of perceived barriers and firm characteristics on export market strategies. The results from these models show that perceptions about import restrictions influence use of diversification of exports across products, competition influences use of competitive export pricing, and overseas product regulations affect product adaptation for export markets. |
| Tipo: Journal Article |
Palavras-chave: International Relations/Trade. |
| Ano: 1998 |
URL: http://purl.umn.edu/34557 |
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| Bryant, Henry L.; Davis, George C.. |
| This paper presents an information based model averaging and internal meta-analysis procedure that is easily applied to a large model space. In the application, the procedure is used to investigate the efficacy of some recently contested commodity promotion programs. The investigated model space consists of 576 demand systems. The internal meta-analysis indicates that theoretical restrictions and evaluation points are more important than alternative functional forms and explanatory variables in determining the elasticity values. The model averaging weights strongly support the theoretically consistent classical demand systems without promotion. The weighted or meta-price and meta-expenditure elasticities are presented and discussed. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Demand and Price Analysis. |
| Ano: 2003 |
URL: http://purl.umn.edu/21918 |
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| Holmes, Ashley; Serrano, Elena; Davis, George C.. |
| Children are one subpopulation that have seen a threefold increase in obesity over the last two decades but have received no attention in the menu labeling literature. The purpose of this study is to explore the effects of different menu labeling formats on purchases of children’s meals and parent-child decision-making at a family-oriented restaurant. The intervention consists of five children’s menus featuring six bundled, nutritionally diverse, and equally priced combinations that are implemented over about a year. Accompanying each menu is a survey postcard collecting information on the parent-child decision process in choosing the item. This is ongoing research and all data is not in but at this point, the very early evidence points toward child-menu... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Consumer/Household Economics; Food Consumption/Nutrition/Food Safety. |
| Ano: 2011 |
URL: http://purl.umn.edu/103816 |
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| Davis, George C.; Jensen, Kimberly L.. |
| Two-stage utility maximization theory has been widely used in the literature to estimate import demand for agricultural commodities that are often inputs. This article examines the overlooked conceptual and empirical limitations of applying two-stage utility maximization theory to model the demand for imported commodities that are inputs. A discussion is presented about how the underutilized theory of two-stage profit maximization overcomes these limitations. Also discussed are the conditions under which errors illustration of the two-stage profit maximization procedure is provided. |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis; International Relations/Trade. |
| Ano: 1994 |
URL: http://purl.umn.edu/30757 |
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| Jensen, Kimberly L.; Jakus, Paul M.; Davis, George C.. |
| The USDA's Market Access Program (formerly Market Promotion Program) recently underwent a major change to redirect all branded products export promotion funds to small domestic firms and cooperatives. The redirection responded to criticisms by the General Accounting Office of past allocations of branded products export promotion funds to large, experienced exporters. This study uses a firm-level analysis to examine whether firm size and export experience matter in how effectively firms use the promotion funds to increase their revenues. The results support neither the GAO criticisms nor the recent program redirection. |
| Tipo: Journal Article |
Palavras-chave: International Relations/Trade. |
| Ano: 2003 |
URL: http://purl.umn.edu/31630 |
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| Davis, George C.; Jacob, Jacy; Good, Deborah J. |
| Food intake is greatly influenced by economic factors. Consequently, neuroeconomics has been identified as a new and important area for understanding the interaction between genotypes and phenotypes related to food intake. A foundational element of economics is choice between alternatives. Changing food choices are a central element in the explanation of the increasing obesity rates in human populations. The purpose of this research is to incorporate the key element of choice into the investigation of food intake and weight-related phenotypes for mice in an operant chamber setting. Using normal mice, and mice with a mutation in the Tubby gene (Tub-Mut) which results in adult onset obesity, this research will investigate different behavioral responses... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food Consumption/Nutrition/Food Safety. |
| Ano: 2011 |
URL: http://purl.umn.edu/103390 |
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| Baral, Ranju; Davis, George C.; You, Wen. |
| In operation for more than 40 years and now in all 50 states and 6 territories, the Expanded Food and Nutrition Education Program has become a cornerstone in US nutrition education. The aim of the program is to assist limited resource audiences to acquire the knowledge, skills, attitudes, and changed behavior necessary for nutritionally sound diets, and to contribute to their personal development and improvement of the overall family diet and nutritional well-being. However, very little is known about the effectiveness of this program, especially at the national level. The purpose of this research is to determine the effectiveness of money spent on the Expanded Food and Nutrition Education Program in satisfying its stated goals for adult participants.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Nutrition Education; Food Security and Poverty; Health Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/103345 |
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| Shumway, C. Richard; Davis, George C.. |
| Consistent aggregation ensures that behavioural properties which apply to disaggregate relationships apply also to aggregate relationships. The agricultural economics literature which has tested for consistent aggregation or measured statistical bias and/or inferential errors due to aggregation is reviewed. Tests for aggregation bias and errors of inference are conducted using indices previously tested for consistent aggregation. Failure to reject consistent aggregation in a partition did not entirely mitigate erroneous inference due to aggregation. However, inferential errors due to aggregation were small relative to errors due to incorrect functional form or failure to account for time series properties of data. |
| Tipo: Journal Article |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2001 |
URL: http://purl.umn.edu/117388 |
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| You, Wen; Davis, George C.. |
| The increased prevalence of childhood obesity is a major concern for society. This study aims at exploring the influence of the parents (especially parental time allocation choices) on childrens obesity-related health outcomes and examining the potential differences between the fathers and the mothers marginal effects. A household with two parents and one child is modeled. The household production theory and the collective household modeling structure are combined. The model treats the mother, the father and the child as three separate agents with individual preferences. The two parents interaction is modeled within the collective model framework by assuming that they will reach Pareto efficient resource allocation between them. In order to capture... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food Consumption/Nutrition/Food Safety; Health Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/9737 |
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| Registros recuperados: 29 | |
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