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| Registros recuperados: 10 | |
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| Driscoll, Paul J.; McGuirk, Anya M.. |
| Quadratic flexible forms, such as the translog and generalized Leontief, are separability inflexible. That is, separability restrictions render them inflexible with regard to separable structures. A class functional forms is proposed that is flexible with regard to general production structures and remains flexible regarding weakly separable structures when separability restrictions are imposed, thus permitting tests of the separability hypothesis. Additionally, the restricted forms are parsimonious; that is they contain the minimum number of parameters with which flexibility can be achieved. |
| Tipo: Journal Article |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 1992 |
URL: http://purl.umn.edu/30947 |
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| McGuirk, Anya M.; Mundlak, Yair. |
| The introduction of modern crops varieties in the mid-1960s caused a dramatic change, known as the “green revolution”, in agricultural production in Asia, as elsewhere. However, in spite of their yields, the process of adoption of these varieties has taken a long time, and even today traditional varieties are still widely grown. Various reasons, such as imperfect information, uncertainty, inadequate human capital, and institutional constraints, have been given for this slow diffusion. This research during 1960-79 emphasizes the role of economic incentives and resource availability in determining the pace of technology adoption. Only three years after their introduction, the modern wheat varieties accounted for 70 percent of the wheat area in Punjab.... |
| Tipo: Report |
Palavras-chave: Agriculture; Economic aspects; India; Punjab; International Development. |
| Ano: 1991 |
URL: http://purl.umn.edu/42125 |
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| McGuirk, Anya M.; Preston, Warren P.; Jones, Gerald M.. |
| A mailed questionnaire was used to assess consumer concerns and potential consumption response attributable to the introduction of bovine somatotropin (bST). Responses from 605 households in Virginia are described and analyzed. Logit models were estimated to identify which issues shape consumers decisions to alter milk purchases contingent on the introduction of bST and to determine whether socioeconomic characteristics explain consumers attitudes toward these issues. Estimates based on survey responses point toward sizable reductions in fluid milk purchases if bST is introduced. Large retail price reductions are predicted to be insufficient to offset these estimated decreases. Consumer education and marketing strategies are discussed. |
| Tipo: Journal Article |
Palavras-chave: Food Consumption/Nutrition/Food Safety; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1992 |
URL: http://purl.umn.edu/30375 |
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| Kaltsas, Ioannis K.; Bosch, Darrell J.; McGuirk, Anya M.. |
| Omitting spatial characteristics such as proximity to amenities from hedonic land value models may lead to spatial autocorrelation and biased and inefficient estimators. A spatial autoregressive error model can be used to model the spatial structure of errors arising from omitted spatial effects. This paper demonstrates an alternative approach to modeling land values based on individual and joint misspecification tests using data from Roanoke County in Virginia. Spatial autocorrelation is found in land value models of Roanoke County. Defining neighborhoods based on geographic and socioeconomics characteristics produces better estimates of neighborhood effects on land values than simple distance measures. Implementing a comprehensive set of individual and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use. |
| Ano: 2005 |
URL: http://purl.umn.edu/19406 |
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| McGuirk, Anya M.; Driscoll, Paul J.; Alwang, Jeffrey Roger; Huang, Huilin. |
| A misspecification testing strategy designed to ensure that the statistical assumptions underlying a system of equations are appropriate is outlined. The system tests take into account information in, and interactions between, all equations in the system and can be used in a wide variety of applications where systems of equations are estimated. The system testing approach is demonstrated by modeling U.S. consumer demand for meats. The example illustrates how the approach can be used to disentangle issues regarding structural change and other forms of model misspecification. |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1995 |
URL: http://purl.umn.edu/30938 |
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| McGuirk, Anya M.; Spanos, Aris. |
| This paper focuses on the practice of serial correlation correcting of the Linear Regression Model (LRM) by modeling the error. Simple Monte Carlo experiments are used to demonstrate the following points regarding this practice. First, the common factor restrictions implicitly imposed on the temporal structure of yt and xt appear to be completely unreasonable for any real world application. Second, when one compares the Autocorrelation-Corrected LRM (ACLRM) model estimates with estimates from the (unrestricted) Dynamic Linear Regression Model (DLRM) encompassing the ACLRM there is no significant gain in efficiency! Third, as expected, when the common factor restrictions do not hold the LRM model gives poor estimates of the true parameters and estimation of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2002 |
URL: http://purl.umn.edu/19905 |
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| Registros recuperados: 10 | |
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