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Full-Text Articles in Life Sciences

A Statistical Regression Model To Determine Financial Cash Flow For Wind Energy Based On Tax Structure, Matthew Dae Joong Ritsema Jan 2004

A Statistical Regression Model To Determine Financial Cash Flow For Wind Energy Based On Tax Structure, Matthew Dae Joong Ritsema

Retrospective Theses and Dissertations

A financial cash flow for wind turbines is based on an energy entity's tax structure. Using statistical regression of various wind turbines and wind maps, a theoretical model for energy output was calculated. The turbines were separated by the rated size of the turbine. With the theoretical model, financial output was generated for four different types of tax structures. A total of eight test cases were simulated. Special consideration was given to the impact of Production Tax Credits (PTC) and Renewable Energy Production Incentives (REPI). The object is to determine what type of business and tax structure would have ...


An Economic Perspective On Iowa Farm Diversification In The Twentieth Century, Matthew Edward Miller Jan 2003

An Economic Perspective On Iowa Farm Diversification In The Twentieth Century, Matthew Edward Miller

Retrospective Theses and Dissertations

The thesis examines farm-level diversification in Iowa over the past century. Economic theory is employed to propose explanations for observed trends in diversification. The hypothesis says that agricultural production technology has been the driving force behind the emergence of large, highly specialized farms in Iowa. Applications from portfolio theory, the theory of the farm, and agronomics are also utilized to flesh out the theory section. Two indexes, entropy and the Hirschman-Herfindahl index, are constructed using production and price data from the Census of Agriculture. The indices show diversification as relatively constant from 1885 to 1930, after which, a strong specialization ...


A Stochastic Model Of Maize Gene Dispersal, David G. Ripplinger Jan 2003

A Stochastic Model Of Maize Gene Dispersal, David G. Ripplinger

Retrospective Theses and Dissertations

The spatial distribution of maize genes is predicted using a two dimensional Lagrangian stochastic (LS) model that meets sub-inertial and well-mixed conditions. Using wind data from central Iowa, a Weibull distribution is fit. From this distribution, a series of Monte Carlo simulations are run using the LS model in three forms. The final two forms of the model are based on USDA regulations for the production of pharmaceutical producing corn, demonstrating the model's suitability for analyzing the risk of transgene dispersal in maize. Special considerations are given to the large size of maize pollen, the likelihood of pollen seepage ...


Second Moment Characterization Of Agricultural Export And Income Projection Models, Andrew Dean Miller Jan 2003

Second Moment Characterization Of Agricultural Export And Income Projection Models, Andrew Dean Miller

Retrospective Theses and Dissertations

Agricultural outlook baseline projections published by FAPRI, USDA and the OECD are intended as policy analysis tools. It is shown that projections have been used as forecasts. Therefore, users of baseline projections need information about the past performance of baseline projections. This thesis measures the projection errors of baseline projections using RMSE and MAPE and assesses the ability of models to predict directional movements. The baseline model results are compared to corresponding results of naive models. For projection errors, a mixed model is used to estimate the mean bias and confidence intervals about the mean. Projections of corn, soybean, wheat ...


Farmland Ownership And Tenure In Iowa, 1982-1997: A Fifteen Year Perspective, Charles Anthony Pieper Jan 1999

Farmland Ownership And Tenure In Iowa, 1982-1997: A Fifteen Year Perspective, Charles Anthony Pieper

Retrospective Theses and Dissertations

The 1997 Farmland Ownership and Tenure study focuses on aspects of farmland ownership and tenancy in Iowa and compares 1997 data with trends from similar studies conducted in 1982 and 1992. Agricultural landholding types considered in the study include sole ownership, joint tenancy(husband and wife only), co-ownership(other joint ownership and tenants in common), partnership (including general, limited and limited liability partnership), trusts, estates,corporations, and limited liability companies. Demographics of landowners are included in the study and encompass age, gender, education, occupation, marital status, and residency. Acquisition, anticipated transfer, and management of farmland were also analyzed. A major ...


Economic And Financial Analysis Of Large Scale Closed Cooperative Swine Production Under Uncertainty In Iowa, Michael Charles Poray Jan 1997

Economic And Financial Analysis Of Large Scale Closed Cooperative Swine Production Under Uncertainty In Iowa, Michael Charles Poray

Retrospective Theses and Dissertations

This research evaluates the opportunities for small grain farmers in Iowa to organize a joint large scale swine production operation. Different business organizational structures' legal and tax implications are examined for a joint large scale production operation. Based on the suitability from reviewing current the legal and tax regulations, the closed (defined membership) cooperative was selected as the organizational business structure for the proposed group of small grain farmers. The returns from establishing closed cooperatives owned by grain producers to produce hogs in Iowa are evaluate. Using a computer simulated production model incorporating both biological and price factors, the uncertainty ...


Analysis Of Agricultural Policy In Russia, Sergei Strokov Jan 1996

Analysis Of Agricultural Policy In Russia, Sergei Strokov

Retrospective Theses and Dissertations

No abstract provided.


The Effects Of Incorporating Fee-Based Integrated Crop Management Consulting Services In Grain Marketing And Input Supply Cooperatives, John Alan Yeomans Jan 1995

The Effects Of Incorporating Fee-Based Integrated Crop Management Consulting Services In Grain Marketing And Input Supply Cooperatives, John Alan Yeomans

Retrospective Theses and Dissertations

No abstract provided.


An Evaluation Of The Impacts Of Land Voiding Caused By Degrading Waterways: An Engineering Economic Approach, Landon Leath Morris Jan 1994

An Evaluation Of The Impacts Of Land Voiding Caused By Degrading Waterways: An Engineering Economic Approach, Landon Leath Morris

Retrospective Theses and Dissertations

No abstract provided.


Predicting Loan Repayment Performance: A Case Of Kenyan Farm Borrowers, Ruth M. A. Otima Jan 1994

Predicting Loan Repayment Performance: A Case Of Kenyan Farm Borrowers, Ruth M. A. Otima

Retrospective Theses and Dissertations

No abstract provided.


Iowa Farmland Ownership And Tenure, 1982-1992: Analysis And Comparison, Ann Marie Schultz Jan 1994

Iowa Farmland Ownership And Tenure, 1982-1992: Analysis And Comparison, Ann Marie Schultz

Retrospective Theses and Dissertations

No abstract provided.


A Panel Data Approach To The Intercountry Metaproduction Function, Yu Yaguchi Jan 1994

A Panel Data Approach To The Intercountry Metaproduction Function, Yu Yaguchi

Retrospective Theses and Dissertations

No abstract provided.


Rationing In Agricultural Credit Markets: Evidence From Iowa Farm Operators, Gayatri C. Weerawardane Jan 1993

Rationing In Agricultural Credit Markets: Evidence From Iowa Farm Operators, Gayatri C. Weerawardane

Retrospective Theses and Dissertations

No abstract provided.


Applications Of Contingent Claims Theory To Microeconomic Problems , David A. Hennessy Jan 1993

Applications Of Contingent Claims Theory To Microeconomic Problems , David A. Hennessy

Retrospective Theses and Dissertations

In this thesis contingent claims techniques have been applied to various specifications of the economic problem of optimizing the expected value of a welfare function. In paper I we consider the relationship between financial market completeness, corn production, and the corn target price program. Using the observation that the program is similar to a government issued put option, we found that the per acre program benefit, at around 20/acre was quite large, that the program encourages producers to trade options, and that the existence of contingent markets facilitates the policy maker in decoupling agricultural support. In paper II we ...


Tradeoffs In Balancing Multiple Objectives Of An Integrated Agricultural Economic And Environmental System , P. G. Lakshminarayan Jan 1993

Tradeoffs In Balancing Multiple Objectives Of An Integrated Agricultural Economic And Environmental System , P. G. Lakshminarayan

Retrospective Theses and Dissertations

This research, which integrates the economic and environmental processes in a multiobjective framework to find comprehensive solution, is a departure from the traditional approach. The problem is motivated by multiattribute utility and social welfare theory, and the conditions for optimality are derived. Since agricultural nonpoint source pollution (NPS) pollution is a nonmarket externality, a motivation based on public policy and social costs is provided to include environmental quality decisions. A conceptual framework for integrating the multidisciplinary models is presented. The environmental data needs of the integrated system was obtained from spatially simulated predictions of the biogeophysical process model, a mathematical ...


The Impact Of Land Tenure On The Use Of Sustainable Agricultural Practices, Daniel M. Koster Jan 1993

The Impact Of Land Tenure On The Use Of Sustainable Agricultural Practices, Daniel M. Koster

Retrospective Theses and Dissertations

No abstract provided.


Essays In Dynamic Adjustment, Structural Change And Data Analysis: Applications To The Demand For Meat In The Us , Jacinto Fama Fabiosa Jan 1993

Essays In Dynamic Adjustment, Structural Change And Data Analysis: Applications To The Demand For Meat In The Us , Jacinto Fama Fabiosa

Retrospective Theses and Dissertations

A number of reasons are cited in the literature to explain the over rejection of theoretical demand properties in empirical studies. This dissertation examines two of the most common explanations; the Dynamic Adjustment Hypothesis (DAH) and the Structural Change Hypothesis (SCH), as it is applied to meat demand in the U.S. That is, failure to account for dynamics and variation of parameters over time may be the root cause of the over rejection. Despite the inclusion of dynamics and parameter variation in the model, however, the theoretical demand properties still can not be accepted;The first paper clearly shows ...


Forecasting The Probability Distribution Of Us Harvest Time Average Corn Prices , Daniel Michael O'Brien Jan 1993

Forecasting The Probability Distribution Of Us Harvest Time Average Corn Prices , Daniel Michael O'Brien

Retrospective Theses and Dissertations

A procedure is developed which provides preharvest forecasts of the probability distribution of U.S. harvest time average corn prices. Crop-weather models are used to estimate the relationship between corn yields, technology trends and weather conditions for seventeen corn producing regions in the U.S. Corn Belt at monthly intervals throughout the growing season. Probability distributions of U.S. corn production forecasts are derived based on historic production forecast accuracy. To produce price forecasts, a corn price model is estimated from corn supply and demand information available to the market at harvest time. Forecasts of the probability distribution of U ...


Risk Management Strategies And Iowa Farmers: A Logit Analysis Of The Use Of Federal Crop Insurance, Jana Pinkasova Jan 1993

Risk Management Strategies And Iowa Farmers: A Logit Analysis Of The Use Of Federal Crop Insurance, Jana Pinkasova

Retrospective Theses and Dissertations

No abstract provided.


Environmental Pollution Control Under Alternative Incentive Structures , Ramu Govindasamy Jan 1993

Environmental Pollution Control Under Alternative Incentive Structures , Ramu Govindasamy

Retrospective Theses and Dissertations

The present study examines environmental pollution control under alternative incentive structures with an emphasis on the effectiveness and practicality of alternative policy tools. The focus is on three instruments for controlling pollution: (1) Environmental Bonds; (2) Budget Balancing Incentive Mechanisms; and (3) Environmental Rank Order Tournaments;Environmental bonds typically require more information for implementation than either budget balancing incentive mechanisms or rank order tournaments. However, there is a trade-off between the cost savings from acquiring information and the potential costs from committing an error in assigning pollution control responsibility;Paper I examines the limits to environmental bonds. It identifies three ...


Agricultural Trade Liberalization In Morocco: The Case Of Oilseeds Sector, Samia Moulay-Benaissa Jan 1992

Agricultural Trade Liberalization In Morocco: The Case Of Oilseeds Sector, Samia Moulay-Benaissa

Retrospective Theses and Dissertations

No abstract provided.


Supply Response And Food Demand In Lampung, Indonesia, Yoke Muelgini Jan 1992

Supply Response And Food Demand In Lampung, Indonesia, Yoke Muelgini

Retrospective Theses and Dissertations

No abstract provided.


Using Futures And Option Contracts To Manage Price And Quantity Risk: A Case Of Corn Farmers In Central Iowa , Li-Fen Lei Jan 1992

Using Futures And Option Contracts To Manage Price And Quantity Risk: A Case Of Corn Farmers In Central Iowa , Li-Fen Lei

Retrospective Theses and Dissertations

The overall objective of this study is to examine the optimal responses of a risk-averse corn producer to price and quantity risks within a framework where both futures and option contracts are available as risk management tools. The corn farmer is selected as a representative decision maker because corn is the most important crop in Iowa;Numerical techniques are used to solve the expected utility maximization problem for the corn producer. In forming his subjective probability distributions about random variables, the farmer is assumed to predicate output which will be sell to cash market at a later date and use ...


Economic Impacts Of Growth Promotants In The Beef, Pork And Poultry Industries , Brian Lee Buhr Jan 1992

Economic Impacts Of Growth Promotants In The Beef, Pork And Poultry Industries , Brian Lee Buhr

Retrospective Theses and Dissertations

Advances in biotechnology have resulted in the potential for use of growth promotants in commercial livestock production. Somatotropins and beta-agonists are the two growth enhancers most likely to be used in beef, pork, and chicken production. The growth promotants increase production efficiency and also result in improved lean composition of meat;Commercial availability of growth promotants will have impacts on all participants in meat production, including producers, processors, consumers, crop producers, and the government, and their possible use has been controversial. The objective of this study is to determine the likely economic impacts of the adoption of growth promotants by ...


The Economics Of Reducing Sulfonamide Residues In Pork, Virginia Marie Berger Jan 1992

The Economics Of Reducing Sulfonamide Residues In Pork, Virginia Marie Berger

Retrospective Theses and Dissertations

No abstract provided.


The Reform Of The Agricultural Policy In The European Economic Community: An Italian Farm Simulation Study, Giovanni Giardini Jan 1992

The Reform Of The Agricultural Policy In The European Economic Community: An Italian Farm Simulation Study, Giovanni Giardini

Retrospective Theses and Dissertations

No abstract provided.


The Effect Of Health Information On The Implicit Prices Of Nutrients, Soma Sen Jan 1992

The Effect Of Health Information On The Implicit Prices Of Nutrients, Soma Sen

Retrospective Theses and Dissertations

No abstract provided.


Determination Of Optimal Crop Combinations On Zambian Farms: Incorporation Of Certainty And Risk Considerations In Mathematical Programming Models, Judith Nanyangwe Lufumpa Jan 1991

Determination Of Optimal Crop Combinations On Zambian Farms: Incorporation Of Certainty And Risk Considerations In Mathematical Programming Models, Judith Nanyangwe Lufumpa

Retrospective Theses and Dissertations

No abstract provided.


The Location Of The North American Cattle-Feeding Industry: A Nonspatial Modeling Approach, Shawn Arthur Hamilton Jan 1991

The Location Of The North American Cattle-Feeding Industry: A Nonspatial Modeling Approach, Shawn Arthur Hamilton

Retrospective Theses and Dissertations

No abstract provided.


U.S. Livestock Production And Factor Demand: A Multiproduct Dynamic Dual Approach, K. Eswaramoorthy Jan 1991

U.S. Livestock Production And Factor Demand: A Multiproduct Dynamic Dual Approach, K. Eswaramoorthy

Retrospective Theses and Dissertations

There is a need for modeling livestock production and factor use incorporating the interlinked dynamics of breeding herd adjustments in a theoretically consistent manner. Therefore, a multiple input-multiple output theoretical model is developed based on the adjustment cost hypothesis of production relationship involving sluggish adjustments of quasi-fixed inputs. Employing the results of intertemporal analogue of Hotelling's lemma, a system of equations of optimal output supply, variable input demand, and quasi-fixed inputs (livestock breeding herds) investment is derived. Various issues like aggregation, expectation formation, and nonjointness in implementing this theoretical model are appraised.;A normalized quadratic value function is used ...