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Daniel Tilley

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University of Nebraska Lincoln

Thomas Sporleder

Constantine Iliopoulos

Brian Mwanamambo

Fredrick Boykin

Manhattan College

Constantine Iliopoulos, PhD

Leibniz Institute of Agricultural Development in Central and Eatern Europe

George Hendrikse

Erasmus University Rotterdam

Thaleia Zariphopoulou

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Papers by Daniel Tilley

Coalition Development in the Agricultural Marketing System

The theory of agricultural coalition formation is enhanced by incorporating non-monetary benefits... more The theory of agricultural coalition formation is enhanced by incorporating non-monetary benefits, risk, and fairness. Producer's expected utility and investment decisions in the agricultural cooperative are affected by their perception about non-monetary benefits, risk and fairness associate with the cooperative investment. (Revised edition added in August 2002)

Impacts of U.S. Sugar Policy and the North American Free Trade Agreement in North American Sugar Containing Products

Sugar is one of the most protected agricultural commodities in the United States and other countr... more Sugar is one of the most protected agricultural commodities in the United States and other countries around the world through the use of production allotments, preferential marketing agreements, and tariffs. These protectionist measures lead to increased input costs for manufacturers of candies and soft drinks. The North American Free Trade Agreement (NAFTA) has in part altered the nature of sugar trade throughout the North American continent. This paper presents a game theoretical Cournot model which illustrates how trade in sugar containing products and the location of sugar containing product manufacturers in North America is likely to be impacted by the combined effects of U.S. sugar policy and NAFTA. Current international agreements which affect sugar confectioners are incorporated in the Cournot model such as NAFTA along with U.S. and Mexican re-export programs. Preliminary results indicate that domestic firms are at a cost disadvantage to firms that export into the domestic m...

A Variance Component Approach To Industry Cost Analysis

Journal of Agricultural and Applied Economics, 1979

Cost and volume data used in long-run cost studies often are observations from a single cross-sec... more Cost and volume data used in long-run cost studies often are observations from a single cross-section on firms or the average of multiple observations for each firm [1, 3, 5]. Averaging costs and volume over a time series is designed to eliminate the effect of short-run disturbances on the estimated long-run cost function. This practice results in a loss of information on the cost effects of short-run disturbances and significantly reduces the potential degrees of freedom that could result from pooling cross-sectional time-series data. In order to pool data, binary variables for each firm previously have been used to account for short-run fixed firm effects [4].

A Bid Price Equation for National Forest Timber Sales in Western Arkansas and Southeastern Oklahoma

Southern Journal of Applied Forestry, 2004

An equation relating bid price to timber sale characteristics was developed using regression tech... more An equation relating bid price to timber sale characteristics was developed using regression techniques on the basis of data from 150 timber sales that occurred between June 1992 and Dec. 1998 in the Ozark and Ouachita National Forests in Arkansas and southeastern Oklahoma. Predicted values of the real winning bid price are based on total sawtimber volume per sale, total pulpwood volume per sale, average sawtimber volume per acre, average sawtimber volume per tree, and the ratio of southern yellow pine #2 dimension lumber producer price index (PPI) to pine sawlog PPI. Sawtimber and pulpwood in these sales are mainly shortleaf pine (Pinus echinata Mill.). The most highly significant variables were total sawtimber volume and the ratio of southern yellow pine #2 dimension lumber PPI to pine sawlog PPI. The equation explains 95% of the variation in the total bid price data. South. J. Appl. For. 28(2):100–108.

Importance of Understanding Consumption Dynamics In Market Recovery Periods

Southern Journal of Agricultural Economics, 1979

Periods of reduced supplies due to exogenous shocks and subsequent high price levels have occurre... more Periods of reduced supplies due to exogenous shocks and subsequent high price levels have occurred for many agricultural commodities in the past decade. Consumers' adjustments to these events depend on the magnitude of the shocks and characteristics of the commodity. Understanding consumers' responses to these events requires recognition of rigidities that result in delays in consumer responses to prices. Recognition of rigidities in consumption relationships by using dynamic stock and flow adjustment models was popularized by Houthakker and Taylor [2]. The models recognize the role of inventories and habits resulting from previous purchase patterns in determining current consumption decisions.

A Stochastic Simulation Analysis of a Small-Scale Catfish Processing Plant

Southern Journal of Agricultural Economics, 1992

Stochastic simulation was used to analyze revenues and costs for a small-scale catfish processing... more Stochastic simulation was used to analyze revenues and costs for a small-scale catfish processing plant under various combinations of operating capacity utilization and price paid for live fish. The probability for a positive level of daily net income ranged from 11 to 100 percent depending on the price paid for live fish and level of operating capacity utilized. Daily average total cost per pound of live fish processed changed by 2.10 percent given a 10 percent change in live fish processed. Short-term cyclical patterns in revenues and costs suggest a need for financial planning to provide for possible year-end revenue shortfalls.

The Packing Simulation Model

Southern Journal of Agricultural Economics, 1987

The Packing Simulation Model is a micro-computer application program designed for researchers, ex... more The Packing Simulation Model is a micro-computer application program designed for researchers, extension personnel, bankers, packing managers, or other specialists who plan the operations of a packing facility or simulate its financial performance. PACKSIM produces pro forma financial statements for packing facilities based on flexible crop mixes and packing assumptions. Variations can be made in the product harvest schedule, price, quality, quantity, input costs and requirements, packing efficiency, overhead, and loan terms.

Consumer Expenditures at Direct Produce Markets

Southern Journal of Agricultural Economics, 1989

Interviews of customers at direct produce markets were conducted to determine why expenditure pat... more

Catfish Producer Harvest Response to Production and Asymmetric Price Risk

Journal of Agricultural and Applied Economics, 1991

Harvest response to production and asymmetric price risk was analyzed using an ordinary least squ... more Harvest response to production and asymmetric price risk was analyzed using an ordinary least squares model. Statistically significant responses to production-quality and output price risk were indicated. Results suggest that alternative pricing strategies designed to reduce risk may alter harvest response and decrease month to month harvest variability.

Production Responses and Price Determination in the Florida Watermelon Industry

Southern Journal of Agricultural Economics, 1979

This article presents a model of the Florida watermelon industry that quantifies aggregate entry ... more This article presents a model of the Florida watermelon industry that quantifies aggregate entry and exit decisions and the effect of interregional competition on prices received by Florida growers. The model development is presented first and is followed by estimation of the model's parameters. Policy implications from the model are then developed.

Demand and Competition Among Supply Sources: The Indonesian Fruit Import Market

Journal of Agricultural and Applied Economics, 1997

Indonesia is a rapidly growing and competitive market for U.S. fruit. A restricted, source-differ... more Indonesia is a rapidly growing and competitive market for U.S. fruit. A restricted, source-differentiated, almost ideal demand system is estimated for apples, oranges, grapes, and other fruit in Indonesia. The Marshallian expenditure elasticities for U.S. fruit are estimated to be between 1.01 and 1.21. For grapes and oranges, competition with other fruits appears to be more important than competition with other supply sources. For apples, strong sourcedifferentiated substitution relationships are found.

Irreversible Import Shares for Frozen Concentrated Orange Juice in Canada

Southern Journal of Agricultural Economics, 1983

Canada is the most important U.S. export market for frozen concentrated orange juice, accounting ... more Canada is the most important U.S. export market for frozen concentrated orange juice, accounting for over 8 million gallons of exports each of the past 9 years. Brazil and the U.S. are the dominant suppliers of orange juice in Canada. Prior to 1975, the U.S. held more than 60 percent of the Canadian market.

Effectiveness of Inductive and Deductive Teaching Methods in Learning Agricultural Economics: A Case Study1

Nacta Journal, Sep 1, 2004

Determinants of Studentsâ First Impressions of Instructors and Courses

Students evaluated instructors and courses in the first two weeks of the fall semester to determi... more Students evaluated instructors and courses in the first two weeks of the fall semester to determine the factors that form impressions in the early stages of the semester. Results indicate differences exist between upper and lower division courses with presentation of material and perceived workload as key factors that students use to form first impressions.

Involvement of Practical Projects in Undergraduate and Graduate Teaching

2009 Reno, Nevada, June 21 - June 24, 2009, 2009

In recent years, the undergraduate and graduate level instrumentation and control courses offered... more In recent years, the undergraduate and graduate level instrumentation and control courses offered in the Department of Biosystems and Agricultural Engineering (BAE) at Oklahoma State University (OSU) have been emphasizing hands-on skill training through extensive laboratory exercises and a required group class project. The class projects are selected through a discussion between students and the instructor. They should stimulate students’ interests while maintaining the requirement for the course outcomes. More and more practical research projects are involved. Undergraduate students, most at junior level, gain practical experience before taking their senior design course. Graduate students use the class project to establish measurement platforms for their research project. This paper will present an example of a class project which was related to a research project.

Designing an International Joint Venture Negotiation Game

Simulation & Gaming, 1996

The success of developing a Joint Venture Simulation Game to model the common management problems... more The success of developing a Joint Venture Simulation Game to model the common management problems encountered in the negotiation and management of an international joint venture is evaluated. The business simulation game was designed to communicate abstract concepts such as partner rapport, transfer price conflicts, and marketing disagreements to executives of state-owned agribusinesses in Indonesia. The study examines the actions of the Indonesian agribusiness executives during the game relative to the learning objectives.

Protocol analysis of meat buyer's product selections

Agribusiness, 1995

Protocol analysis of meat buyer&#39;s product selections found that in more than 80% of the b... more Protocol analysis of meat buyer&#39;s product selections found that in more than 80% of the buyers&#39; decisions, a high-involvement decision process was used. Most of the buyers use a compensatory process in which product attributes are allowed to compensate one for the other. Some buyers used a phased process in which the second phase was a high-involvement compensatory process. Protocol

Food irradiation: A proposed economic research agenda and implications for agribusiness

Agribusiness, 1987

In April 1986 the US Food and Drug Administration (FDA) approved low level irradiation of fresh f... more In April 1986 the US Food and Drug Administration (FDA) approved low level irradiation of fresh fruits and vegetables for insect control and delayed ripening. The Department of Energy (DOE) is interested in establishing six food irradiation research facilities in the US. This article provides a background on food irradiation and identifies the research issues likely to become important as food irradiation becomes commercial. Peaceful use of atomic energy has been a policy goal for more than 30 years since passage of the Atomic Energy Act of 1954. Particular emphasis is soon to be placed on food and agricultural applications. Through its Civilian Byproducts Utilization (CBU) Program, the Department of Energy intends to build six irradiation research facilities to explore commercial applications to food pmducts. Planned to be built in Iowa, Florida, Oklahoma, Washington, Alaska, and Hawaii,' these facilities will specialize in particular applications to demonstrate the benefits of irradiated agricultural commodities. For example, the proposed Iowa facility will primarily study meats, while fresh vegetables will be handled in the Oklahoma center.' The range of potential applications is very broad. For fresh fruits and vegetables, applications include sprout inhibition, insect disinfestation, senescence delay, and parasite inactivation. Although a pioneer in irradiated food research and home of 35% of the world's installed radiating materials, the United States has not become involved in food irradiation on a commercial scale, with the exception of spice^.^ The FDA has

Impact of international coffee agreement abandonment on Indonesian coffee prices

Agribusiness, 1996

International Coffee Agreement (ICA) impact on prices, premiums, and discounts for coffee grades ... more International Coffee Agreement (ICA) impact on prices, premiums, and discounts for coffee grades are determined. Data for 967 transactions from 1987 to 1991 are used to estimate a hedonic price model. ICA abandonment reduced prices received and reduced the premiums paid for wet-processed high quality Robusta cofee. 01996

Can Faculty Change Initial Impressions on Student Evaluations of Teaching?

Expectations of a course and instructor are formed prior to engagement in the course which affect... more Expectations of a course and instructor are formed prior to engagement in the course which affect learning. By understanding the factors that are involved in setting these expectations, instruction and student learning may be improved. This paper seeks to determine if student expectations set the basis for course and instructor appraisal and what factors affect these expectations or changes from expectations. Results indicate that while instructor appraisal does not change over the course of the semester, variables related to instructor appraisal do change. How worthwhile students view the course can also positively or negatively impact overall course appraisal.

Coalition Development in the Agricultural Marketing System

The theory of agricultural coalition formation is enhanced by incorporating non-monetary benefits... more The theory of agricultural coalition formation is enhanced by incorporating non-monetary benefits, risk, and fairness. Producer's expected utility and investment decisions in the agricultural cooperative are affected by their perception about non-monetary benefits, risk and fairness associate with the cooperative investment. (Revised edition added in August 2002)

Impacts of U.S. Sugar Policy and the North American Free Trade Agreement in North American Sugar Containing Products

Sugar is one of the most protected agricultural commodities in the United States and other countr... more Sugar is one of the most protected agricultural commodities in the United States and other countries around the world through the use of production allotments, preferential marketing agreements, and tariffs. These protectionist measures lead to increased input costs for manufacturers of candies and soft drinks. The North American Free Trade Agreement (NAFTA) has in part altered the nature of sugar trade throughout the North American continent. This paper presents a game theoretical Cournot model which illustrates how trade in sugar containing products and the location of sugar containing product manufacturers in North America is likely to be impacted by the combined effects of U.S. sugar policy and NAFTA. Current international agreements which affect sugar confectioners are incorporated in the Cournot model such as NAFTA along with U.S. and Mexican re-export programs. Preliminary results indicate that domestic firms are at a cost disadvantage to firms that export into the domestic m...

A Variance Component Approach To Industry Cost Analysis

Journal of Agricultural and Applied Economics, 1979

Cost and volume data used in long-run cost studies often are observations from a single cross-sec... more Cost and volume data used in long-run cost studies often are observations from a single cross-section on firms or the average of multiple observations for each firm [1, 3, 5]. Averaging costs and volume over a time series is designed to eliminate the effect of short-run disturbances on the estimated long-run cost function. This practice results in a loss of information on the cost effects of short-run disturbances and significantly reduces the potential degrees of freedom that could result from pooling cross-sectional time-series data. In order to pool data, binary variables for each firm previously have been used to account for short-run fixed firm effects [4].

A Bid Price Equation for National Forest Timber Sales in Western Arkansas and Southeastern Oklahoma

Southern Journal of Applied Forestry, 2004

An equation relating bid price to timber sale characteristics was developed using regression tech... more An equation relating bid price to timber sale characteristics was developed using regression techniques on the basis of data from 150 timber sales that occurred between June 1992 and Dec. 1998 in the Ozark and Ouachita National Forests in Arkansas and southeastern Oklahoma. Predicted values of the real winning bid price are based on total sawtimber volume per sale, total pulpwood volume per sale, average sawtimber volume per acre, average sawtimber volume per tree, and the ratio of southern yellow pine #2 dimension lumber producer price index (PPI) to pine sawlog PPI. Sawtimber and pulpwood in these sales are mainly shortleaf pine (Pinus echinata Mill.). The most highly significant variables were total sawtimber volume and the ratio of southern yellow pine #2 dimension lumber PPI to pine sawlog PPI. The equation explains 95% of the variation in the total bid price data. South. J. Appl. For. 28(2):100–108.

Importance of Understanding Consumption Dynamics In Market Recovery Periods

Southern Journal of Agricultural Economics, 1979

Periods of reduced supplies due to exogenous shocks and subsequent high price levels have occurre... more Periods of reduced supplies due to exogenous shocks and subsequent high price levels have occurred for many agricultural commodities in the past decade. Consumers' adjustments to these events depend on the magnitude of the shocks and characteristics of the commodity. Understanding consumers' responses to these events requires recognition of rigidities that result in delays in consumer responses to prices. Recognition of rigidities in consumption relationships by using dynamic stock and flow adjustment models was popularized by Houthakker and Taylor [2]. The models recognize the role of inventories and habits resulting from previous purchase patterns in determining current consumption decisions.

A Stochastic Simulation Analysis of a Small-Scale Catfish Processing Plant

Southern Journal of Agricultural Economics, 1992

Stochastic simulation was used to analyze revenues and costs for a small-scale catfish processing... more Stochastic simulation was used to analyze revenues and costs for a small-scale catfish processing plant under various combinations of operating capacity utilization and price paid for live fish. The probability for a positive level of daily net income ranged from 11 to 100 percent depending on the price paid for live fish and level of operating capacity utilized. Daily average total cost per pound of live fish processed changed by 2.10 percent given a 10 percent change in live fish processed. Short-term cyclical patterns in revenues and costs suggest a need for financial planning to provide for possible year-end revenue shortfalls.

The Packing Simulation Model

Southern Journal of Agricultural Economics, 1987

The Packing Simulation Model is a micro-computer application program designed for researchers, ex... more The Packing Simulation Model is a micro-computer application program designed for researchers, extension personnel, bankers, packing managers, or other specialists who plan the operations of a packing facility or simulate its financial performance. PACKSIM produces pro forma financial statements for packing facilities based on flexible crop mixes and packing assumptions. Variations can be made in the product harvest schedule, price, quality, quantity, input costs and requirements, packing efficiency, overhead, and loan terms.

Consumer Expenditures at Direct Produce Markets

Southern Journal of Agricultural Economics, 1989

Interviews of customers at direct produce markets were conducted to determine why expenditure pat... more

Catfish Producer Harvest Response to Production and Asymmetric Price Risk

Journal of Agricultural and Applied Economics, 1991

Harvest response to production and asymmetric price risk was analyzed using an ordinary least squ... more Harvest response to production and asymmetric price risk was analyzed using an ordinary least squares model. Statistically significant responses to production-quality and output price risk were indicated. Results suggest that alternative pricing strategies designed to reduce risk may alter harvest response and decrease month to month harvest variability.

Production Responses and Price Determination in the Florida Watermelon Industry

Southern Journal of Agricultural Economics, 1979

This article presents a model of the Florida watermelon industry that quantifies aggregate entry ... more This article presents a model of the Florida watermelon industry that quantifies aggregate entry and exit decisions and the effect of interregional competition on prices received by Florida growers. The model development is presented first and is followed by estimation of the model's parameters. Policy implications from the model are then developed.

Demand and Competition Among Supply Sources: The Indonesian Fruit Import Market

Journal of Agricultural and Applied Economics, 1997

Indonesia is a rapidly growing and competitive market for U.S. fruit. A restricted, source-differ... more Indonesia is a rapidly growing and competitive market for U.S. fruit. A restricted, source-differentiated, almost ideal demand system is estimated for apples, oranges, grapes, and other fruit in Indonesia. The Marshallian expenditure elasticities for U.S. fruit are estimated to be between 1.01 and 1.21. For grapes and oranges, competition with other fruits appears to be more important than competition with other supply sources. For apples, strong sourcedifferentiated substitution relationships are found.

Irreversible Import Shares for Frozen Concentrated Orange Juice in Canada

Southern Journal of Agricultural Economics, 1983

Canada is the most important U.S. export market for frozen concentrated orange juice, accounting ... more Canada is the most important U.S. export market for frozen concentrated orange juice, accounting for over 8 million gallons of exports each of the past 9 years. Brazil and the U.S. are the dominant suppliers of orange juice in Canada. Prior to 1975, the U.S. held more than 60 percent of the Canadian market.

Effectiveness of Inductive and Deductive Teaching Methods in Learning Agricultural Economics: A Case Study1

Nacta Journal, Sep 1, 2004

Determinants of Studentsâ First Impressions of Instructors and Courses

Students evaluated instructors and courses in the first two weeks of the fall semester to determi... more Students evaluated instructors and courses in the first two weeks of the fall semester to determine the factors that form impressions in the early stages of the semester. Results indicate differences exist between upper and lower division courses with presentation of material and perceived workload as key factors that students use to form first impressions.

Involvement of Practical Projects in Undergraduate and Graduate Teaching

2009 Reno, Nevada, June 21 - June 24, 2009, 2009

In recent years, the undergraduate and graduate level instrumentation and control courses offered... more In recent years, the undergraduate and graduate level instrumentation and control courses offered in the Department of Biosystems and Agricultural Engineering (BAE) at Oklahoma State University (OSU) have been emphasizing hands-on skill training through extensive laboratory exercises and a required group class project. The class projects are selected through a discussion between students and the instructor. They should stimulate students’ interests while maintaining the requirement for the course outcomes. More and more practical research projects are involved. Undergraduate students, most at junior level, gain practical experience before taking their senior design course. Graduate students use the class project to establish measurement platforms for their research project. This paper will present an example of a class project which was related to a research project.

Designing an International Joint Venture Negotiation Game

Simulation & Gaming, 1996

The success of developing a Joint Venture Simulation Game to model the common management problems... more The success of developing a Joint Venture Simulation Game to model the common management problems encountered in the negotiation and management of an international joint venture is evaluated. The business simulation game was designed to communicate abstract concepts such as partner rapport, transfer price conflicts, and marketing disagreements to executives of state-owned agribusinesses in Indonesia. The study examines the actions of the Indonesian agribusiness executives during the game relative to the learning objectives.

Protocol analysis of meat buyer's product selections

Agribusiness, 1995

Protocol analysis of meat buyer&#39;s product selections found that in more than 80% of the b... more Protocol analysis of meat buyer&#39;s product selections found that in more than 80% of the buyers&#39; decisions, a high-involvement decision process was used. Most of the buyers use a compensatory process in which product attributes are allowed to compensate one for the other. Some buyers used a phased process in which the second phase was a high-involvement compensatory process. Protocol

Food irradiation: A proposed economic research agenda and implications for agribusiness

Agribusiness, 1987

In April 1986 the US Food and Drug Administration (FDA) approved low level irradiation of fresh f... more In April 1986 the US Food and Drug Administration (FDA) approved low level irradiation of fresh fruits and vegetables for insect control and delayed ripening. The Department of Energy (DOE) is interested in establishing six food irradiation research facilities in the US. This article provides a background on food irradiation and identifies the research issues likely to become important as food irradiation becomes commercial. Peaceful use of atomic energy has been a policy goal for more than 30 years since passage of the Atomic Energy Act of 1954. Particular emphasis is soon to be placed on food and agricultural applications. Through its Civilian Byproducts Utilization (CBU) Program, the Department of Energy intends to build six irradiation research facilities to explore commercial applications to food pmducts. Planned to be built in Iowa, Florida, Oklahoma, Washington, Alaska, and Hawaii,' these facilities will specialize in particular applications to demonstrate the benefits of irradiated agricultural commodities. For example, the proposed Iowa facility will primarily study meats, while fresh vegetables will be handled in the Oklahoma center.' The range of potential applications is very broad. For fresh fruits and vegetables, applications include sprout inhibition, insect disinfestation, senescence delay, and parasite inactivation. Although a pioneer in irradiated food research and home of 35% of the world's installed radiating materials, the United States has not become involved in food irradiation on a commercial scale, with the exception of spice^.^ The FDA has

Impact of international coffee agreement abandonment on Indonesian coffee prices

Agribusiness, 1996

International Coffee Agreement (ICA) impact on prices, premiums, and discounts for coffee grades ... more International Coffee Agreement (ICA) impact on prices, premiums, and discounts for coffee grades are determined. Data for 967 transactions from 1987 to 1991 are used to estimate a hedonic price model. ICA abandonment reduced prices received and reduced the premiums paid for wet-processed high quality Robusta cofee. 01996

Can Faculty Change Initial Impressions on Student Evaluations of Teaching?

Expectations of a course and instructor are formed prior to engagement in the course which affect... more Expectations of a course and instructor are formed prior to engagement in the course which affect learning. By understanding the factors that are involved in setting these expectations, instruction and student learning may be improved. This paper seeks to determine if student expectations set the basis for course and instructor appraisal and what factors affect these expectations or changes from expectations. Results indicate that while instructor appraisal does not change over the course of the semester, variables related to instructor appraisal do change. How worthwhile students view the course can also positively or negatively impact overall course appraisal.