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| Asche, Frank; Guttormsen, Atle G.; Kristofersson, Dadi; Roheim, Cathy A.. |
| A frequently encountered problem in import demand estimation is how to account for competition between imports and domestic production. Traditionally, use of the Armington model has been a way to handle this problem. This is a disaggregate model which distinguishes commodities by country of origin with import demand determined in a separable two-step procedure. The model appears frequently in analysis of international agricultural markets. However, the Armington model relies on a set of weak separability assumptions, which several authors have shown to be highly questionable. In this paper, a new aggregation theorem, the Generalized Composite Commodity Theorem (GCCT), is applied to test whether imports can be treated as a separate group. An advantage with... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Armington; Separability; GCCT; Demand system; Sword fish; International Relations/Trade; F18; Q11; Q22. |
| Ano: 2005 |
URL: http://purl.umn.edu/19432 |
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| Asche, Frank; Tveteras, Sigbjorn. |
| During the last two decades there has been a tremendous growth in the production of intensively farmed fish. This growth has been accompanied by a substantial reduction in prices. As this enhances the competitiveness of farmed fish, concerns are often raised with respect to the market impact of new aquaculture species. Of particular interest is the relationship to wild species in the output market as well as in the input market because of the demand for feed. In this paper we investigate what we know about market interactions based on two simple market models, where the difference between the two models is whether the competing product is wild-caught seafood or a traditionally produced product. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Aquaculture; Market interaction; Fishmeal trap; Livestock Production/Industries; Marketing. |
| Ano: 2005 |
URL: http://purl.umn.edu/56003 |
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| Asche, Frank; Tveteras, Ragnar. |
| This study deals with modeling of production risk by means of a two-step procedure. In contrast to earlier studies of production risk, we do not immediately adopt restrictive functional forms for the risky production technology. We first test for the presence of production risk. If production risk is found to be present, the mean and risk functions are estimated separately. This allows the use of more flexible functional forms for both the mean and the risk functions than commonly found in the literature. An empirical application to Norwegian salmon farming, where restrictive specifications of the technology are rejected, demonstrates the validity of our approach. Presence of production risk many primary production sectors implies that this approach should... |
| Tipo: Journal Article |
Palavras-chave: Production Economics. |
| Ano: 1999 |
URL: http://purl.umn.edu/30790 |
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| Johnston, Robert J.; Roheim, Cathy A.; Donath, Holger; Asche, Frank. |
| An analysis of consumer preferences for seafood labeled with information about environmental production attributes is introduced into the food labeling literature. International seafood ecolabeling programs have proposed to create market-based incentives for fisheries managers to promote sustainable fisheries. We investigate differences in consumer preferences for ecolabeled seafood across the United States and Norway. Using a contingent-choice telephone survey of random households in each nation, a wide range of factors is found to influence consumers' likelihood of purchasing ecolabeled seafood. Consumer preferences differ by price premium, species, consumer group, and certifying agency. The effect of these factors often differs between the United... |
| Tipo: Journal Article |
Palavras-chave: Consumer/Household Economics. |
| Ano: 2001 |
URL: http://purl.umn.edu/31157 |
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| Asche, Frank; Guttormsen, Atle G.; Roll, Kristin H.. |
| In this paper we are investigating how production risk may influence the way a risk averse producer like a subsistence farmer chooses optimal input levels. Risk averse producers will take into account both the mean and the variance of output, and therefore we expect them to choose input levels which differ form the optimal input level of risk neutral producers. Production risk is of particular importance in developing countries, since variance in production here may have grave consequences for the farmer and his family. To model the production decision problem under such circumstances we have made use of the fact that production risk can be treated as heteroskedasticity. Our analysis is based on a dataset obtained from a survey on smallholders in the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management. |
| Ano: 2006 |
URL: http://purl.umn.edu/25574 |
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| Asche, Frank; Tveteras, Sigbjorn. |
| Intensive fish farming has faced a number of environmental challenges both locally and globally. In this paper we review some of the most important environmental issues that has faced fish farming and then see how the industry has handled these challenges. Salmon aquaculture has probably faces more of these challenges than any other farmed species, with the possible exception of shrimp aquaculture. We concentrate on empirical evidence related to salmon, although the issues related to other farmed species are similar to that of salmon. Other environmental issues include degradation of local habitat, disruption of ecological systems, and detrimental impact on wild species. Evidence suggests that most of the local environmental problems have been... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy; Livestock Production/Industries. |
| Ano: 2005 |
URL: http://purl.umn.edu/55998 |
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