Paul V. Preckel, Gerald E. Shively, Timothy G. Baker, Mei-chin Chu, Jessica Eide Burrell
This study examines incentives for input use under tournament contracts. We analyze implications of contract design for nitrate-based environmental externalities generated by agricultural producers....
The Earnings Effects of Multilateral Trade Liberalization: Implications for Poverty (2004)
Hertel, Thomas W., Ivanic, Maros, Preckel, Paul V., Cranfield, John A. L.
Most researchers examining poverty and multilateral trade liberalization have had to examine average, or per capita effects, suggesting that if per capita real income rises, poverty will fall. This...
Changes in the Structure of Global Food Demand (1998)
Cranfield, John A L, Hertel, Thomas W, Eales, James S, Preckel, Paul V
A newly developed demand system is used to estimate the response of food and food product demand to per capita expenditure changes. The resulting Engel elasticities are then used to project food and...
The GAMS Callable Program Library for Variational and Complementarity Solvers (1994)
Steven P. Dirkse, Michael C. Ferris, Paul V. Preckel, Thomas Rutherford
The GAMS modeling language has recently been extended to enable the formulation of Mixed Complementarity Problems (MCP). The GAMS Callable Program Library (CPLIB) is a set of Fortran subroutines...
Intertemporal equilibrium models:--development and results. (1983)
Thesis--Stanford Univ., 1983.
The Earnings Effects of Multilateral Trade Liberalization: Implications for Poverty
Thomas W. Hertel, Maros Ivanic, Paul V. Preckel
Most researchers examining poverty and multilateral trade liberalization have had to examine average, or per capita effects, suggesting that if per capita real income rises, poverty will fall. This...
Multilateral Trade Liberalization and Poverty in Brazil and Chile
Thomas W. Hertel, Paul V. Preckel, Maros Ivanic
This paper combines results from a newly available international, cross-section consumption analysis, with earnings data from household surveys from Brazil and Chile, to analyze the implications of...
Diffusion and spillover of new technology: a heterogeneous-agent model for cassava in West Africa
Michael E. Johnson, William A. Masters, Paul V. Preckel
Understanding what determines the geographic spread of innovations can help guide the funding and implementation of research and extension programs. Our approach uses household survey data as model...
Alejandro Nin, Channing Arndt, Thomas W. Hertel, Paul V. Preckel
Technical dependencies as well as data constraints limit our ability to allocate inputs across sectors and hence our ability to measure sectoral productivity. We adapt a directional measure of...
Preckel, Paul V, Harrington, David, Dubman, Robert
The goal of Howitt's positive mathematical programming procedure is to calibrate a mathematical programming model so that it will reproduce a set of base data for the primal variables. This article...
Least Squares and Entropy: A Penalty Function Perspective.
Mathematical measures of entropy as defined by Shannon and cross entropy as defined by Kullback and Leibler are currently in vogue in the field of econometrics, primarily due to the comprehensive...
Economic Replacement of a Heterogeneous Herd
Kathryn A. Boys, Ning Li, Paul V. Preckel, Allan P. Schinckel, Kenneth A. Foster
A model was developed to determine the optimal slaughter weights of pigs with heterogeneous growth raised in a 1,000 head barn and marketed in truckload groups. Under commonly used revenue schemes,...
Projecting world food demand using alternative demand systems
Yu, Wusheng, Hertel, Thomas W., Preckel, Paul V., Eales, James S.
Poverty analysis using an international cross-country demand system
Cranfield, J. A. L., Preckel, Paul V, Hertel Thomas W.
This paper proposes a new method for ex ante analysis of the poverty impacts arising from policy reforms. Three innovations underlie this approach. The first is the estimation of a global demand...
Sara Nienow, Kevin T. McNamara, Andrew R. Gillespie, Paul V. Preckel
Public and private electric utilities are considering co-firing biomass with coal as a strategy to reduce the levels of C02, S02 and NO, in stack emissions, as well as a response to state legislative...
Field time constraints for farm planning models
Etyang, Martin N., Preckel, Paul V., Binkley, James K., Doster, D. Howard
Efficient survey sampling of households via Gaussian quadrature
Channing Arndt, Julia Kozlitina, Paul V. Preckel
The collection of data through surveys is a costly and time-consuming process, particularly when complex economic data are involved. The paper presents an efficient approach, based on Gaussian...
Modeling the impact of technological change on nutrition and marketed surplus
Ahmed, Mohamed M., Preckel, Paul V., Baker, Timothy G., Lopez-Pereira, Miguel
Economics of erosion-control and seed-fertilizer technologies for hillside farming in Honduras
Lopez-Pereira, Miguel A., Sanders, John H., Baker, Timothy G., Preckel, Paul V.
Eskigun, Erdem, Uzsoy, Reha, Preckel, Paul V., Beaujon, George, Krishnan, Subramanian, Tew, Jeffrey D.
A General Equilibrium Framework for the Food Marketing System.
Peterson, Everett B, Hertel, Thomas W, Preckel, Paul V
This paper develops a general framework for the analysis of marketing margins and the food system. It extends previous work by: (i) disaggregating farm-level production, food processing and food...
James S. Eales, Thomas W. Hertel, Paul V. Preckel
This paper assesses the ability of five structural demand systems to predict demands when estimated with cross sectional data spanning countries with widely varying per capita expenditure levels....
Nutrition and the Economics of Swine Management.
Boland, Michael A, Foster, Kenneth A, Preckel, Paul V
Current methods of formulating animal rations lead to excess nutrient excretion which can potentially lead to excess manure nutrients and an increase in economic costs. These methods do not recognize...
ROBUSTNESS OF NON-PARAMETRIC MEASUREMENT OF EFFICIENCY AND RISK AVERSION
Settlage, Daniel M., Preckel, Paul V.
This paper examines the performance of a risk-adjusted non-parametric approach to measuring efficiency and risk aversion. Prior work is extended to the case where agent behavior is motivated by...
ESTIMATING THE VALUE OF BT CORN: A MULTI-STATE COMPARISON
Hyde, Jeffrey, Martin, Marshall A., Preckel, Paul V., Edwards, C. Richard, Dobbins, Craig L.
Bt corn offers a powerful tool to control European corn borers and some other pests. Because pest infestations and farming practices differ across the Corn Belt, economic benefits also differ. This...
A Comparison of RAS and Entropy Methods in Updating IO Tables
Ahmed, Syud Amer, Preckel, Paul V.
Since the first half of the 20th century, the input-output (IO) table has been the backbone of much empirical work used to support policy analysis and develop economy-wide models. The need for...
Global Nutrition Impacts of Rapid Economic Growth in China and India
Hertel, Thomas W., Verma, Monika, Bouet, Antoine, Cranfield, John A., Preckel, Paul V.
Despite record global economic growth in past decade – malnutrition remains a serious problem in many parts of the world. According to the United Nations’ Food and Agriculture Organization (FAO),...
IMPLICIT ADDITIVE PREFERENCES: A FURTHER GENERALIZATION OF THE CES
Preckel, Paul V., Cranfield, John A.L., Hertel, Thomas W.
The CES is generalized by extension of the work of Hanoch (1975) resulting in implicit, direct and indirect relationships between utility and consumption. Expressions for substitution and income...
Maintaining Parameter Invariance in Censored Micro-Level Data
Preckel, Paul V., Eales, James, Lillywhite, Jay M.
Research Methods/ Statistical Methods,
Optimal Management of Molds in Stored Corn
Yigezu, Yigezu A., Alexander, Corinne E., Preckel, Paul V.
Long term storage of corn is becoming more common due to the recent increase in the demand for corn by ethanol plants. Infection of maize kernels by toxigenic fungi remains a challenging storage...
The New Economics of Livestock Production Management
Hubbs, Todd, Preckel, Paul V., Schinckel, Allan P., Deen, John, Foster, Kenneth A., Curtis, Stanley E., ...
The importance of heterogeneity of animal attributes in livestock production is assessed. Preliminary results indicate that variance and skew measures of attributes may be becoming more important...
THE ECONOMICS OF REFUGE DESIGN FOR BT CORN
Hyde, Jeffrey, Martin, Marshall A., Preckel, Paul V., Dobbins, Craig L., Edwards, C. Richard
Planting Bt corn on large areas may lead to European corn borer (ECB) resistance to Bt. Scientists recommend planting a non-Bt corn refuge as part of a resistance management strategy. Different...
TRADE POLICY, FOOD PRICE VARIABILITY, AND THE VULNERABILITY OF LOW-INCOME HOUSEHOLDS
Hertel, Thomas W., Preckel, Paul V., Reimer, Jeffrey J.
We utilize a global trade model to generate distributions of commodity and factor prices based on observed uncertainty in rice production. This is done for three trade policy regimes. We then assess...
MODELING THE MOTIVATION FOR DIVERSIFICATION ON SUBSISTENCE FARMS IN THE ETHIOPIAN HIGHLANDS
Preckel, Paul V., Ahmed, Mohamed M., Ehui, Simeon K.
Mathematical programming analysis has been quite effective for commercial farm planning in developed countries, but less so for subsistence farms in developing countries. In particular, it is...
A Modified, Implicit, Directly Additive Demand System
Cranfield, J.A.L., Preckel, Paul V., Hertel, Thomas W.
A recently developed demand system, nicknamed AIDADS, offers a more general approach to capturing consumption preferences. AIDADS generalizes the LES by assuming marginal budget shares vary...
Approximating Bayesian Posteriors using Multivariate Gaussian Quadrature
Cranfield, John, Preckel, Paul V., Liu, Songquan
Research Methods/ Statistical Methods,
ENTROPY-BASED SEEMINGLY UNRELATED REGRESSION
Harmon, Alice, Preckel, Paul V., Eales, James S.
We adapt the classical SUR procedure to a minimum cross entropy approach to estimate linear systems of equations where the errors across equations are correlated. We conclude that our entropy-based...
CHANGES IN THE STRUCTURE OF GLOBAL FOOD DEMAND
Cranfield, John A.L., Hertel, Thomas W., Eales, James S., Preckel, Paul V.
A newly developed demand system is used to estimate the response of food and food product demand to per capita expenditure changes. The resulting Engel elasticities are then used to project food and...
ESTIMATING THE VALUE OF BT CORN: A SURVEY
Hyde, Jeffrey, Martin, Marshall A., Preckel, Paul V., Edwards, C. Richard, Dobbins, Craig L.
This document contains a survey used to gather data for use in estimating the value of Bt corn within a particular region. The survey instrument is provided in an appendix. The body of this paper...
IMPLICIT ADDITIVE PREFERENCES: A GENERALIZATION OF THE CES
Preckel, Paul V., Cranfield, John A.L., Hertel, Thomas W.
The CES is generalized by extension of the work of Hanoch (1975) resulting in implicit, direct and indirect relationships between utility and consumption. Expressions for substitution and income...
IMPACT OF IDENTITY PRESERVATION OF NON-GMO CROPS ON THE GRAIN MARKET SYSTEM
Vandeburg, Jennifer M., Fulton, Joan R., Dooley, Frank J., Preckel, Paul V.
The impact of identity preservation (IP) for genetically modified grains (GMOs) on the grain handling system for a typical region in the Eastern Corn Belt is examined. A cost minimizing linear...
LEAST SQUARES AND ENTROPY AS PENALTY FUNCTIONS
Mathematical measures of entropy as defined by Shannon (1948) and Kullback and Leibler (1951) are currently in vogue in the field of econometrics, primarily due to the comprehensive work by Golan,...
PROJECTING WORLD FOOD DEMAND USING ALTERNATIVE DEMAND SYSTEMS
Yu, Wusheng, Hertel, Thomas W., Preckel, Paul V., Eales, James S.
Computable General Equilibrium (CGE) models are increasingly being used to project world food markets in order to support forward-looking policy analysis. Such projections hinge critically on the...
Ahmed, Mohamed M., Preckel, Paul V., Ehui, Simeon
Access to credit is one strategy for promoting the adoption of yield-enhancing technologies. However, advancing credit to smallholder farmers for encouraging technology adoption is a complex policy...
Ludena, Carlos E., Hertel, Thomas W., Preckel, Paul V., Foster, Kenneth, Nin, Alejandro
There is considerable interest in projections of future productivity growth in agriculture. Whether one is interested in the outlook for global commodity markets, future patterns of international...
Optimal management of molds in stored corn
Yigezu, Yigezu A., Alexander, Corinne E., Preckel, Paul V., Maier, D.E., Woloshuk, C.P., Mason, L.J., ...
Long term storage of corn is becoming more common due to the recent increase in the demand for corn by ethanol plants. Infection of maize kernels by toxigenic fungi remains a challenging storage...
Impact of Identity Preservation of Non-GMO Crops on the Grain Market System
Vandenberg, Jennifer M., Fulton, Joan R., Dooley, Frank J., Preckel, Paul V.
The events of 1999 highlight the importance of the need for identity preservation (IP) of products that result from genetic modification. In April of 1999, Archer Daniels Midland Co. and A. E. Staley...
A Comparison of RAS and Entropy Methods in Updating IO Tables
Ahmed, Syud Amer, Preckel, Paul V.
Since the first half of the 20th century, the input-output (IO) table has been the backbone of much empirical work used to support policy analysis and develop economy-wide models. The need for...
Global Nutrition Impacts of Rapid Economic Growth in China and India
Hertel, Thomas W., Verma, Monika, Bouet, Antoine, Cranfield, John A., Preckel, Paul V.
Despite record global economic growth in past decade – malnutrition remains a serious problem in many parts of the world. According to the United Nations’ Food and Agriculture Organization...
NUTRITION AND THE ECONOMICS OF SWINE MANAGEMENT
Boland, Michael A., Foster, Kenneth A., Preckel, Paul V.
Current methods of formulating animal rations lead to excess nutrient excretion which can potentially lead to excess manure nutrients and an increase in economic costs. These methods do not recognize...
THE VALUE OF PUBLIC INFORMATION FOR MICROECONOMIC PRODUCTION DECISIONS
Preckel, Paul V., Loehman, Edna T., Kaylen, Michael S.
Procedures are needed to evaluate the benefits of the provision of information. This paper shows how to apply a money metric definition of the value of information for this purpose. The application...
ECONOMIC ANALYSIS OF PHOSPHORUS - REDUCING TECHNOLOGIES IN PORK PRODUCTION
Boland, Michael A., Preckel, Paul V., Foster, Kenneth A.
Soil phosphorus levels have increased as pork production has become concentrated. Phosphorus-based manure management regulations for land application have been proposed by policy makers. The...
CONTRACT INCENTIVES AND EXCESSIVE NITROGEN USE IN AGRICULTURE
Preckel, Paul V., Shively, Gerald E., Baker, Timothy G., Chu, Mei-Chin, Burrell, Jessica Eide
This study examines incentives for input use under tournament contracts. We analyze implications of contract design for nitrate-based environmental externalities generated by agricultural producers....
The Value of Bt Corn in Southwest Kansas: A Monte Carlo Simulation Approach
Hyde, Jeffrey, Martin, Marshall A., Preckel, Paul V., Buschman, Lawrent L., Edwards, C. Richard, Sloderbeck, Phillip E., ...
While most Corn Belt farmers consider planting Bt corn to control European corn borer, southwestern Kansas farmers must also take into account an array of other insect pests, including corn rootworm,...
Li, Ning, Preckel, Paul V., Foster, Kenneth A., Schinckel, Allan P.
An approach to the development of the economically optimal dietary concentration of Paylean, duration of the Paylean feeding, and dietary lysine concentration for finishing hog production is...
Nienow, Sara, McNamara, Kevin T., Gillespie, Andrew R., Preckel, Paul V.
Public and private electric utilities are considering co-firing biomass with coal as a strategy to reduce the levels of CO2, SO2 and NO, in stack emissions, as well as a response to state legislative...
Evaluation of Alternative Coordination Systems Between Producers and Packers in the Pork Value Chain
Poray, Michael, Gray, Allan, Boehlje, Michael, Preckel, Paul V.
Industrial Organization, Livestock Production/Industries,
Bista, Bhawna, Hubbs, Todd, Richert, Brian T., Tyner, Wallace E., Preckel, Paul V.
Livestock Production/Industries,