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| Registros recuperados: 26 | |
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| Flaten, Ola; Lien, Gudbrand D.. |
| The EU regulation governing organic production will require 100% organic feed in organic dairy systems from August 2005 compared with 85% currently in Norway. This study aimed to assess adjustments in resource use and financial impacts on organic dairy herds using a discrete stochastic programming model. Farm management effects of the regulatory change varied between farm types. For the two organic dairy systems examined, both having a milk quota of 100 000 litres but with varying farmland availability, the introduction of the 100% organic feed regulation resulted in an economic loss of approximately 6-8% of the net income compared to the current regime. The economic loss was mainly due to the considerable higher price of organic compared to conventional... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Feed regulation; Organic farming; Milk production; Stochastic programming; Livestock Production/Industries. |
| Ano: 2005 |
URL: http://purl.umn.edu/24245 |
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| Hegrenes, Agnar; Kristensen, Anders Ringgaard; Lien, Gudbrand D.. |
| A model is presented to investigate the optimal economic life cycle of grass leys with winter damage problems in northern Norway and to determine the threshold of winter damage before it is profitable to re-seed. A two-level hierarchic Markov process has been constructed using the MLHMP software. The model takes uncertainty concerning yield potential, damage estimation and weather dependent random fluctuations into account. A Kalman filter technique is used for updating of knowledge on yield potential and damage level. The application of the model is demonstrated using data from two commercial Norwegian farms. Since parameter estimates vary considerably among farms, it is concluded that decision support concerning optimal economic life cycle of grass leys... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/25848 |
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| Hardaker, J. Brian; Richardson, James W.; Lien, Gudbrand D.; Schumann, Keith D.. |
| A method of stochastic dominance analysis with respect to a function (SDRF) is described and illustrated. The method, called stochastic efficiency with respect to a function (SERF), orders a set of risky alternatives in terms of certainty equivalents for a specified range of attitudes to risk. It can be applied for conforming utility functions with risk attitudes defined by corresponding ranges of absolute, relative or partial risk aversion coefficients. Unlike conventional SDRF, SERF involves comparing each alternative with all the other alternatives simultaneously, not pairwise, and hence can produce a smaller efficient set than that found by simple pairwise SDRF over the same range of risk attitudes. Moreover, the method can be implemented in a simple... |
| Tipo: Journal Article |
Palavras-chave: Risk and Uncertainty. |
| Ano: 2004 |
URL: http://purl.umn.edu/117962 |
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| Lien, Gudbrand D.; Kumbhakar, Subal C.; Hardaker, J. Brian. |
| Little attention has been given in the agricultural economics literature to the impact of off-farm work on farm productivity and efficiency. More knowledge about what determines part-time farming and whether farm productivity and efficiency are affected by part-time farming could help policy makers introduce better targeted rural development policies. This paper aims to fill the above-mentioned gaps by first analysing factors that influence the choice of off-farm work; and then examining how off-farm work influences productivity and technical efficiency at the farm level. An unbalanced panel data set from 1991 to 2005 from Norwegian grain farms is used for this purpose. The results show that the likelihood of off-farm work and the share of time allocated... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Off-farm work; Productivity; Efficiency; Unobserved heterogeneity; Panel data; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/6701 |
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| Flaten, Ola; Lien, Gudbrand D.; Tveteras, Ragnar. |
| Agriculture and aquaculture have common features associated with their biological nature affecting risk exposure of the businesses. The aim of this paper is to compare risk exposure in salmon farming and agricultural enterprises in Norway by using an implicit error component model to examine the risk structure of yields, prices and economic returns at the farm level. Results indicate a higher farm-level year-to-year variability in yields, prices and economic returns in salmon farming than in agricultural enterprises. The variability in livestock enterprises was generally lower than for crop enterprises. Return on assets was highest in salmon farming with an average annual return of 9.2%. All of the agricultural farm types exhibited a negative average... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Risk analysis; Variability; Norway; Risk and Uncertainty. |
| Ano: 2008 |
URL: http://purl.umn.edu/44052 |
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| Hardaker, J. Brian; Lien, Gudbrand D.. |
| A method of stochastic dominance analysis with respect to a function (SDRF) is described and illustrated. The method, called stochastic efficiency with respect to a function (SERF), partitions a set of risky alternatives in terms of certainty equivalents for a specified range of attitudes to risk. It can be applied for any utility function with risk attitudes defined by corresponding ranges of absolute, relative or partial risk aversion coefficients. SERF involves comparing each alternative with all the other alternatives simultaneously, not pairwise as with conventional SDRF. Hence it yields a subset of the efficient set found by SDRF. Moreover, the method is readily implemented in a simple spreadsheet with no special software needed. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Risk analysis; Stochastic dominance with respect to a function; Risk aversion.; Risk and Uncertainty. |
| Ano: 2003 |
URL: http://purl.umn.edu/12954 |
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| Registros recuperados: 26 | |
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