Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 13
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Impact of Farmland Preservation Programs on the Rate of Urban Development AgEcon
Brinkman, Blondel A.; Miller, Douglas J.; Nickerson, Cynthia J..
Due to high losses of agricultural land in urbanizing areas over the past several years, state and local governments have adopted zoning regulations, right-to-farm ordinances, preferential property tax programs, and other means to protect agricultural land resources. Critics of the farmland preservation efforts note that these programs may only delay the ultimate conversion of farmland to urban uses and may simply shift urban development to neighboring areas (positive spillover effects). An alternative means of permanently protecting farmland is provided by purchase of development rights (PDR) programs, which enroll acreage from landowners who voluntarily sell the development rights to their farmland. Although ownership and all other property rights are...
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/19384
Imagem não selecionada

Imprime registro no formato completo
AGRICULTURAL LAND VALUES AND FUTURE LAND DEVELOPMENT AgEcon
Plantinga, Andrew J.; Miller, Douglas J..
We develop a theoretical model of land prices and urban expansion and derive a reduced-form expression for agricultural land values. This result dictates the specification of our econometric model in terms of variable choice and functional form. We find strong support for the model in an application to New York.
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 1999 URL: http://purl.umn.edu/21558
Imagem não selecionada

Imprime registro no formato completo
An Information Theoretic Approach to Ecological Estimation and Inference AgEcon
Judge, George G.; Miller, Douglas J.; Cho, Wendy K..
Tipo: Working or Discussion Paper Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/25065
Imagem não selecionada

Imprime registro no formato completo
Product Life Cycles and Innovation in the US Seed Corn Industry AgEcon
Magnier, Alexandre; Kalaitzandonakes, Nicholas G.; Miller, Douglas J..
The purpose of this study is to evaluate potential changes in the length of product life cycles in the US seed corn industry. We use the observed survival time on the market for hybrids sold during 1997-2009 to conduct a survival analysis. Our empirical results show that the average lifetimes of conventional and biotech corn hybrids have decreased over the last twelve years at similar rates and that the rate of decline in the life cycle length increased since 2004. We also find that the shorter product life cycles are closely linked to the accelerated levels of biotech product innovation in the US seed corn industry observed over the period of the analysis.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2010 URL: http://purl.umn.edu/61779
Imagem não selecionada

Imprime registro no formato completo
Product Life Cycles and Innovation in the US Seed Corn Industry AgEcon
Magnier, Alexandre; Kalaitzandonakes, Nicholas G.; Miller, Douglas J..
The purpose of this study is to evaluate potential changes in the length of product life cycles in the US seed corn industry. We use the observed survival time on the market for hybrids sold during 1997-2009 to conduct a survival analysis. Our empirical results show that the expected lifetimes for corn hybrids with single biotech traits are 5-15% longer than for hybrids with multiple (stacked) traits, and the expected lifetimes for conventional corn are 13-17% longer than stacked hybrids. Also, the product life cycles for all types of hybrids have decreased over the past twelve years (especially after 2004), but the rate of decline is roughly similar across hybrid types. Based on this evidence, we conclude that the shorter product life cycles are closely...
Tipo: Journal Article Palavras-chave: Accelerated failure time; Biotechnology; Product life cycle; Survival analysis; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Risk and Uncertainty.
Ano: 2010 URL: http://purl.umn.edu/93557
Imagem não selecionada

Imprime registro no formato completo
ESTIMATING WILLINGNESS-TO-PAY USING A POLYCHOTOMOUS CHOICE FUNCTION: AN APPLICATION TO PORK PRODUCTS WITH ENVIRONMENTAL ATTRIBUTES AgEcon
Hurley, Sean P.; Miller, Douglas J.; Kliebenstein, James B..
This paper utilizes a polychotomous choice function to investigate the relationship between socioeconomic characteristics and willingness-to-pay for embedded environmental attributes. Specifically, a two-stage estimation procedure with an ordered probit selection rule is used to predict the premium payers and the magnitude of the premium they are willing to pay.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/19924
Imagem não selecionada

Imprime registro no formato completo
Unilateral vs. Bilateral Incentives: Evidence from the U.S. Pork Industry AgEcon
Jang, Jongick; Miller, Douglas J.; Sykuta, Michael E.; Won, Seoung Joun.
The idea that individuals adapt their behaviors in response to changes in incentive systems is fundamental to most economic analysis. This paper incorporates the concept of price discovery costs into the incentive theory to offer a theoretical model and empirical evidence on the differential incentive effects of long-term contracts and spot markets. Using the US pork industry case where procuring intertemporally consistent weights of hogs have been critical to pork processors, we show why the effectiveness of unilaterally determined and posted incentive price for the hog quality by the pork packers on the intertemporal consistency erodes and why a bilateral incentive structure built through long-term hog procurement contracts is demanded, in the presence...
Tipo: Conference Paper or Presentation Palavras-chave: Long-term contracts; Incentive effects; Price discovery costs; MGARCH model; Livestock Production/Industries.
Ano: 2009 URL: http://purl.umn.edu/49521
Imagem não selecionada

Imprime registro no formato completo
ENTROPY-BASED ESTIMATION AND INFERENCE IN BINARY RESPONSE MODELS UNDER ENDOGENEITY AgEcon
Miller, Douglas J.; Mittelhammer, Ronald C.; Judge, George G..
This paper considers estimation and inference for the binary response model in the case where endogenous variables are included as arguments of the unknown link function. Semiparametric estimators are proposed that avoid the parametric assumptions underlying the likelihood approach as well as the loss of precision when using nonparametric estimation. Suggestions are made for how the utility maximization decision model can be altered to permit attributes to vary across alternatives.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/20319
Imagem não selecionada

Imprime registro no formato completo
Minimum Divergence Moment Based Binary Response Models: Estimation and Inference AgEcon
Mittelhammer, Ronald C.; Judge, George G.; Miller, Douglas J.; Cardell, N. Scott.
This paper introduces a new class of estimators based on minimization of the Cressie-Read (CR) power divergence measure for binary choice models, where neither a parameterized distribution nor a parameterization of the mean is specified explicitly in the statistical model. By incorporating sample information in the form of conditional moment conditions and estimating choice probabilities by optimizing a member of the set of divergence measures in the CR family, a new class of nonparametric estimators evolves that requires less a priori model structure than conventional parametric estimators such as probit or logit. Asymptotic properties are derived under general regularity conditions and finite sampling properties are illustrated by Monte Carlo sampling...
Tipo: Working or Discussion Paper Palavras-chave: Nonparametric binary response models and estimators; Conditional moment equations; Finite sample bias and precision; Squared error loss; Response variables; Cressie-Read statistic; Information theoretic methods; Research Methods/ Statistical Methods; C10; C2.
Ano: 2005 URL: http://purl.umn.edu/25020
Imagem não selecionada

Imprime registro no formato completo
IMPACT OF FARMLAND PRESERVATION PROGRAMS ON THE RATE OF URBAN DEVELOPMENT AgEcon
Miller, Douglas J.; Nickerson, Cynthia J..
This paper examines whether purchase of development right (PDR) programs slow the rate of farmland conversion or shift land and amenity losses to adjacent areas. We use county-level data from several Northeastern states with existing PDR programs to estimate the probability that farmland is converted to urban use from 1982 to 1997. We then use the fitted model to test for the significance of the PDR programs in reducing the rate of urban development.
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development.
Ano: 2003 URL: http://purl.umn.edu/22170
Imagem não selecionada

Imprime registro no formato completo
Estimating Willingness to Pay Using a Polychotomous Choice Function: An Application to Pork Products with Environmental Attributes AgEcon
Hurley, Sean P.; Miller, Douglas J.; Kliebenstein, James B..
Bid data from a Vickrey auction for pork chops with embedded environmental attributes were analyzed. It was found that approximately 62% of the participants had a positive WTP for the most "environmentally friendly" package of pork. Thirty percent of the participants had no WTP, and 8% had a negative WTP. A polychotomous choice model was used to accommodate data having an anchoring point within the distribution of the data. Standard variables found in the WTP literature coupled with this model were used to predict participants who were premium payers and non-premium payers using an estimated ordered probit equation.
Tipo: Journal Article Palavras-chave: Anchoring points; Environmental attributes; Ordered probit; Polychotomous choice functions; Pork; Vickrey auction; Willingness to pay; Consumer/Household Economics; Demand and Price Analysis.
Ano: 2006 URL: http://purl.umn.edu/8618
Imagem não selecionada

Imprime registro no formato completo
The Impact of Collusion on Price Behavior: Empirical Results from Two Recent Cases AgEcon
Bolotova, Yuliya; Connor, John M.; Miller, Douglas J..
We used extensions of traditional ARCH and GARCH models to examine the difference in the behavior of the first two moments of the price distribution during collusion and the absence of it using prices from two recently discovered conspiracies, citric acid and lysine. According to our results, the citric acid conspiracy increased prices by 9 cents per pound relative to pre-cartel and post-cartel periods. The lysine conspiracy managed to raise prices by 25 cents per pound. In addition, the variance of prices during the lysine conspiracy was lower than the variance of prices during pre-cartel and post-cartel periods as we expected. In contrast, the variance of prices during the citric acid conspiracy was higher relative to more competitive periods.
Tipo: Conference Paper or Presentation Palavras-chave: Demand and Price Analysis.
Ano: 2005 URL: http://purl.umn.edu/19164
Imagem não selecionada

Imprime registro no formato completo
AN ALTERNATIVE APPROACH TO DETERMINING THE ELASTICITY OF EXCESS DEMAND FACING THE UNITED STATES AgEcon
Miller, Douglas J.; Paarlberg, Philip L..
The United States embarked on a policy assuming excess demands for commodities are elastic. Some analysts question the success of that policy and argue that excess demands for farm commodities are inelastic. The controversy is deepened because the two traditional techniques for determining excess demand elasticities yield opposing estimates. We use an alternative technique based on observed variation in commodity prices, production, and use. The point estimates show excess demands for wheat, coarse grains, soybeans, rice, and cotton are elastic. However, a one-sided bootstrap test cannot reject the null hypothesis that the excess demands for wheat, coarse grains, and soybeans are inelastic.
Tipo: Conference Paper or Presentation Palavras-chave: Demand and Price Analysis.
Ano: 2001 URL: http://purl.umn.edu/20587
Registros recuperados: 13
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional