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Registros recuperados: 4
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An Optimal Surveillance Measure Against Foot-and-Mouth Disease in the United States AgEcon
van Ha, Pham; Che, Tuong Nhu; Kompas, Tom.
Surveillance programs on farms and in the local environment provide an essential protection against the importation and spread of exotic diseases. Combined with border quarantine measures, these programs protect both consumers and producers from major health concerns and disease incursions that can potentially destroy local agricultural production and supporting industries, as well as generate substantial losses in trade and tourism. However, surveillance programs also impose costs in the form of expenditures on the surveillance program itself, along with the costs of disease management and eradication should an incursion occur. Taking border quarantine expenditures as given, this paper develops a stochastic optimal control model (with a jump-diffusion...
Tipo: Conference Paper or Presentation Palavras-chave: Surveillance measures; Border quarantine; Disease incursion and spread; Foot- and-Mouth disease; Stochastic optimal control; Livestock Production/Industries; Q1; Q17; Q18.
Ano: 2007 URL: http://purl.umn.edu/10354
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Capacity reduction, quota trading and productivity: the case of a fishery AgEcon
Fox, Kevin J.; Grafton, R. Quentin; Kompas, Tom; Che, Tuong Nhu.
We present the first ex post study that quantitatively analyses the effects of a licence buyback and enhanced quota trading on the profitability and productivity of individual vessels in a fishery. Using firm-level data and a profit index decomposition method, we find that small and large vessels and three different trawler fleets all experienced substantial productivity gains in the year immediately following a licence buy-back and the establishment of a quota brokerage service. The apparent ongoing benefits of the buy-back and increased quota trading over the sample period are in stark contrast to the generally unfavourable long-term outcomes commonly associated with vessel buy-backs in input-controlled fisheries.
Tipo: Journal Article Palavras-chave: Capacity reduction; Fishery; Productivity; Quota trading; Productivity Analysis.
Ano: 2006 URL: http://purl.umn.edu/116929
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Efficiency Gains and Cost Reductions from Individual Transferable Quotas: A Stochastic Cost Frontier for the Australian South East Fishery AgEcon
Kompas, Tom; Che, Tuong Nhu.
In this paper efficiency gains and associated cost reductions from increases in traded quota are estimated with a stochastic cost frontier for the Australian South East Trawl Fishery (SETF). Estimation of this frontier also provides key information on the relative importance of input costs in the SETF, returns to scale, variations in costs as a result of trade in quota and the economic performance of each fishing vessel, year to year. Final estimations indicate that increases in the volume of quota traded have resulted in considerable efficiency gains and cost reductions in the SETF, ranging from 1.8 to 3.5 cents per kilogram for surveyed vessels for every one per cent increase in the volume of quota traded, or 1 to 2.4 per cent of total variable costs,...
Tipo: Conference Paper or Presentation Palavras-chave: Individual transferable quotas; Stochastic cost frontier; Fishery efficiency; International Relations/Trade; Q22; Q28.
Ano: 2003 URL: http://purl.umn.edu/57907
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Technology choice and efficiency on Australian dairy farms AgEcon
Kompas, Tom; Che, Tuong Nhu.
Deregulation of the Australian dairy industry, specifically the removal of price subsidies to ‘market milk’, as well as ongoing drought in many dairy regions, has placed considerable pressure on farm cash income and a search for ways in which dairy farms can be made to operate more efficiently. Using traditional farm survey data and a unique biannual data set on farm technology use, this paper estimates a stochastic production frontier and technical efficiency model for dairy farms in New South Wales and Victoria, determining the relative importance of each input in dairy production, the effects of key technology variables on farm efficiency, and overall farm profiles based on the efficiency rankings of dairy producers. Results show that production...
Tipo: Journal Article Palavras-chave: Australian dairy farms; Dairy production and efficiency; Dairy technology; Stochastic production frontier; Livestock Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/116921
Registros recuperados: 4
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