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| Registros recuperados: 26 | |
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| Hatch, L. Upton; Atwood, Joseph A.; Segar, James. |
| A sequential decision-making model was developed, and data from farm-raised catfish production were used to demonstrate its use. Outcomes of sequences of decisions which satisfied chance constraints on ending cash balances were traced through a specified time period. Discrete choice variables were specified due to the fixed nature of pond facilities. Recourse actions specified were sale of production in excess of endogenously determined transfer levels or purchase of inputs to supplement needs of the next production stage. Production activities cannot be changed during the planning period. Only yield variability was considered due to its impact on relative competitiveness among growth stages. Deviations were calculated from endogenously determined target... |
| Tipo: Journal Article |
Palavras-chave: Farm Management. |
| Ano: 1989 |
URL: http://purl.umn.edu/30168 |
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| Brown, James A.; Bekkerman, Anton; Atwood, Joseph A.; Watts, Myles J.. |
| In the late 2000s, corn prices rose rapidly and were closely followed by prices of other major agricultural commodities. A widespread explanation for these market changes is an increased demand for corn in the production of ethanol, prompted by the introduction of programs intended to encourage biofuels production in the United States. In response to political pressures, the U.S. Congress considered amending three ethanol policies. It is likely that the interaction among the three policies can exacerbate these distortions. This study seeks to model the effects of simultaneous policy changes on multiple sectors of the blended gasoline marketing channel. |
| Tipo: Presentation |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 2012 |
URL: http://purl.umn.edu/124177 |
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| Atwood, Joseph A.. |
| This article demonstrates that the usefulness of time-state contingent investment evaluation models need not be constrained by limited time-state contingent markets. Dual solutions to stochastic programs can be used to obtain firm-specific values for risky investments while allowing linear dependence between initial values and later time-state contingent income-technical coefficients. The model could be useful when the exogenous a priori determination of appropriate (and project-specific) risk-adjusted discount rates and/or certainty equivalents is difficult or when the cash equivalents of noncash investment effects are difficult to estimate. |
| Tipo: Journal Article |
Palavras-chave: Risk and Uncertainty. |
| Ano: 1990 |
URL: http://purl.umn.edu/32067 |
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| Atwood, Joseph A.; Watts, Myles J.; Helmers, Glenn A.; Held, Larry J.. |
| A recent survey indicated that many procedures view risk in a safety-first context. Traditional methods used to impose safety-first constraints in optimization models have often been difficult to implement. This is particularly true when endogenous decisions affect the distribution of the chance-constrained random variable. This paper presents a method whereby probabilistic constraints can be easily imposed upon finitely discrete random variables. The procedure uses a linear version of the lower partial moment stochastic inequality. The resulting solutions are somewhat conservative but are less so than the results using the previously published mean income-absolute deviation stochastic inequality. |
| Tipo: Journal Article |
Palavras-chave: Production Economics; Research Methods/ Statistical Methods. |
| Ano: 1988 |
URL: http://purl.umn.edu/32152 |
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| Registros recuperados: 26 | |
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