Paul Preckel - Academia.edu (original) (raw)

Papers by Paul Preckel

Gtap Working Papers, 2009

There is a long and distinguished literature involving demand analysis using international cross-... more There is a long and distinguished literature involving demand analysis using international cross-section data. Such models are widely used for predicting national per capita consumption. However, there is nothing in this literature testing the performance of ...

... Joseph Steuben Howard Hendricks Jennings LaGrange Jefferson Tipton Scott Johnson Hancock Craw... more ... Joseph Steuben Howard Hendricks Jennings LaGrange Jefferson Tipton Scott Johnson Hancock Crawford Fayette Union Floyd Switzerland Montgomery Dearborn Huntington Bartholomew Vermillion Blackford Vanderburgh Ohio Lowest cost plants using the highest ...

This document contains a survey used to gather data for use in estimating the value of Bt corn wi... more 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 provides background information regarding the survey and contact information for questions.

The incentive for excess nitrogen application in seed corn production contracts is analyzed. We f... more The incentive for excess nitrogen application in seed corn production contracts is analyzed. We find that the lack of contract renewal certainty can encourage greater input use. In a geographic region where contract seed corn production is prevalent, we estimate that nitrogen use is increased by about 15%.

Http Dx Doi Org 10 1080 00036840050155832, Oct 4, 2010

ABSTRACT Motivated by a lack of Engel flexibility in commonly used demand systems, Rimmer and Pow... more ABSTRACT Motivated by a lack of Engel flexibility in commonly used demand systems, Rimmer and Powell developed a new demand system. This system, referred to AIDADS, is implicitly, directly additive, possesses marginal budget shares and thus Engel elasticities, that vary nonlinearly with expenditure such that predicted budget shares are restricted to the [0,1] interval. Due to these attractive Engel properties, AIDADS represents a significant contribution to the literature on demand analysis. This paper presents an alternative estimation procedure to the one used by Rimmer and Powell and examines its properties via a case study. The proposed approach avoids a linear approximation employed in Rimmer and Powell's estimation framework. Based on a small Monte Carlo study, it appears that the approach produces more accurate estimates of the parameters and Engel elasticities.

Staff Paper Department of Agricultural Economics Purdue University, Feb 1, 2000

The impact of identity preservation (IP) for genetically modified grains (GMOs) on the grain hand... more 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 programming model of the transshipment system from farms to grain elevators to grain users tracks shipments and costs through the marketing system. This study compares two different grain segregation strategies: segregating grain within the elevator and designating specific elevators as IP-only facilities. As the cost per unit for grain segregation increases, the designated plant strategy becomes the most cost efficient strategy.

Agricultural and Resource Economics Review, Feb 1, 1999

Page 1. A Model for the Economic Evaluation of Plantation Biomass Production for Co-firing with C... more Page 1. A Model for the Economic Evaluation of Plantation Biomass Production for Co-firing with Coal in Electricity Production Sara Nienow, Kevin T. McNamara, Andrew R. Gillespie and Paul V. Preckel Public and private electric ...

Planting Bt corn on large areas may lead to European corn borer (ECB) resistance to Bt. Scientist... more 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 refuge configurations may impact farm profits differently. This paper analyzes the economics of alternative refuge configurations in Indiana.

jpa, 1999

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M Som Manufacturing Service Operations Management, Jun 1, 2004

The supply chain in the food and agribusiness sector is characterized by long supply lead times c... more The supply chain in the food and agribusiness sector is characterized by long supply lead times combined with significant supply and demand uncertainties, and relatively thin margins. These challenges generate a need for management efficiency and the use of modern decision technology tools. We review some of the literature on applications of decision technology tools for a selected set of agribusiness problems and conclude by outlining what we see as some of the significant new problems facing the industry. It is our hope that we will stimulate interest in these problems and encourage researchers to work on solving them.

The CES is generalized by extension of the work of Hanoch (1975) resulting in implicit, direct an... more 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 elasticities are developed and observed to be variable, rather than constant as in the CES case.

Limited data on the allocation of inputs to different activities has limited agricultural economi... more Limited data on the allocation of inputs to different activities has limited agricultural economists' attempts to measure sub-sector productivity growth in agriculture. However, recent developments have enabled us to estimate total factor productivity (TFP) growth for crops and livestock accounting for input-output allocation. This paper extends previous work on TFP measurement for livestock into ruminants and non-ruminant productivity measurement, given the differences in productivity growth rates among these species. The results show that the nonruminant sector is more dynamic than the ruminant sector, driving most of the productivity growth within the livestock sector. Given the rapid rates of productivity growth observed recently, non-ruminant productivity in developing countries may soon be converging to the productivity levels of developed countries.

A two-sector dynamic model for agriculture and forestry is proposed. Agricultural yields are a fu... more A two-sector dynamic model for agriculture and forestry is proposed. Agricultural yields are a function of the rate of deforestation, the forest stock, and purchased inputs. We examine the impact of changes in the social discount rate, net returns to agriculture, and direct marginal benefits of the forest stock benefits on the optimal deforestation path under the assumption of a quadratic agricultural yield function. Finally, steady-state comparative static analysis is conducted. Q

Operations Research, Sep 1, 1993

Mathematical programming analysis has been quite effective for commercial farm planning in develo... more 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 difficult to reproduce the level of diversification observed on subsistence farms using a simple profit maximization framework. This paper proposes an alternative to the minimum consumption requirement approach for modeling subsistence farming households by treating consumption explicitly through a demand system motivated by Cobb-Douglas utility. A typical, linear programming-based production system is incorporated, allowing for the production of crops and livestock subject to constraints on resource availability.