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| Registros recuperados: 54 | |
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| Somda, Zana C.; Allison, John R.; Ely, L.O.; Newton, G.L.; Wetzstein, Michael E.. |
| The production of excess on-farm manure is placing continuous pressures on dairy producers to meet or exceed standards for environmental regulations while maintaining profitability and competitiveness. Evaluation of the effects of recycling nutrients on the profitability of the whole farm enterprise is important for a dairy operation. The objective of this study was to develop a linear programming model that evaluates the economic performance of a dairy operation considering production and environmental constraints. The main goal was to maximize profits from the dairy enterprise considering milk production, manure production, crop production while maintaining a balance of nutrients in the system. Results from simulation analyses showed greater effects... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/35167 |
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| Vedenov, Dmitry V.; Duffield, James A.; Wetzstein, Michael E.. |
| The hypothesis underlying this analysis is that in the presence of volatile gasoline prices competitive market forces will yield alternative, less volatile fuels as substitutes. A real-option pricing approach was employed for this analysis by modeling investment under uncertainty for the case of comparing stochastic prices of substitute commodities. Based on real options, threshold decision rules were developed for the adoption of portfolio fuels such as ethanol and conventional gasoline blends. Considering this portfolio effect, the benefit-to-cost ratios are above four for the alternative blends under varying discount rates and time horizons. This provides a strong indication that consumer demand exists for these portfolio fuels. Competitive markets will... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19182 |
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| Zhang, Zibin; Jin, Xiangrong; Dong, Xuebing; Wetzstein, Michael E.. |
| Since the beginning of this century, China’s annual GDP growth is over 9%. This growth is fueled by large increases in energy consumption, led by a coal-dominated energy structure, and associated with higher sulfur dioxide emissions and industry dust. In 2008, China accounted for over 17% of the world’s total primary energy consumption and accounts for nearly three-quarters of global energy growth. At an average annual energy growth rate over 12% since 2000, China’s future share of primary energy consumption will continue to increase. A consequence of this growth is China becoming the global leader in sulfur and carbon dioxide emissions. To deal with these energy and environmental challenges, the government set energy saving and pollution reduction... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental productivity efficiency; Hyperbolic distance function; China's energy policy; Environmental Economics and Policy; Productivity Analysis; Resource /Energy Economics and Policy. |
| Ano: 2010 |
URL: http://purl.umn.edu/60918 |
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| Price, T. Jeffrey; Wetzstein, Michael E.. |
| Optimal entry and exit thresholds for Georgia commercial peach production are calculated when both price and yield follow a Brownian motion process. The thresholds are based on an irreversible sunk-cost investment model, where revenue from peach production is affected by the timing of when to enter production. Results indicate stability in Georgia peach production, with growers who are currently producing peaches remaining in production and potential peach growers delaying investment unless they have the ability of earning enhanced returns. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1999 |
URL: http://purl.umn.edu/30874 |
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| Fleming, Ronald A.; Bazen, Ernest F.; Wetzstein, Michael E.. |
| Student evaluation of teaching (SET) is employed as an aid in improving instruction and determining faculty teaching effectiveness. However, economic theory indicates the existence of externalities in SET scores that directly influence their interpretation. As a test of this existence, a multinomial-choice, ordered data estimation procedure is employed to identify course externalities influencing SET. These externalities include student class standing, required courses, class size, days a class meets, class meeting time, classroom location, and classroom design. Results indicate that externalities have a significant impact on teaching evaluations. Thus, failure to internalize these externalities will lead to biases in SET and questionable use of SET... |
| Tipo: Journal Article |
Palavras-chave: Externalities; Ordered probit; SET; Teaching evaluation; A20; A22; I21. |
| Ano: 2005 |
URL: http://purl.umn.edu/43486 |
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| Registros recuperados: 54 | |
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