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| Huck, Petra; Salhofer, Klaus. |
| Dynamic evolutions of resource stocks with stochastic elements in the transition equation are in general very difficult to master. Their handling requires a deep understanding of control theory, probability theory and sometimes even of game theory due to strategic interaction of 'agents'. But without strong mathematical backgrounds, students from adjacent research fields have a hard time with control theory. The same is true for probability theory and game theory. One way to avoid this problem is to change the aim: instead of target function optimization, guarantee the continuance of the system within certain boundaries. The latter relates to Viability theory. Unfortunately, even Viability theory requires more mathematics than the 'average' student... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21451 |
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| Huck, Petra; Salhofer, Klaus; Tribl, Christoph. |
| In this paper we develop a theoretical model of competition among marketing cooperatives (co-ops) in a spatial market setting assuming uniform delivered pricing and Loschian conduct. The model is an extension to Alvarez et al.'s (2000) spatial competition model for investorowned firms (IOF). Theoretical results include i) that the prices for raw milk are, ceteris paribus, higher in a pure market of coops than in a pure IOF market; ii) that even coops may imperfectly transmit price changes upstream; and iii) that the price farmers receive for their raw product is a function of economic space (distance times transportation costs) between coops. We test our theoretical findings for milk processing co-ops in Northern Germany using data of monthly average... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Spatial competition; Oligopsony; Milk processing; Cooperatives; Agribusiness; L13; Q13. |
| Ano: 2006 |
URL: http://purl.umn.edu/25633 |
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| Huck, Petra. |
| We utilize Viability theory to evaluate the effects of CAP. A differential equation describes the dynamic development of soil productivity. If farmers do without entitlement, they are free in soil handling. And as we assume they are short-term profit maximizers, they miss to pay attention to soil conservation. Soil productivity is at risk; correspondingly, economic sustainability is at risk. But if farmers activate their entitlements, they become obliged to soil conserving measures. The model demonstrates that the decision to participate or not at the "entitlement & cross compliance"-program, depends on payment-level and the effects of the decision depend on the dynamics of the environmental system. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Sustainability; Agriculture; Viability Theory; Environmental Economics and Policy; Farm Management. |
| Ano: 2007 |
URL: http://purl.umn.edu/7582 |
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