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Identifying Risk Factors Affecting Weather- and Disease-Related Losses in the U.S. Farm-Raised Catfish Industry AgEcon
Hanson, Terrill R.; Shaik, Saleem; Coble, Keith H.; Edwards, Seanicaa; Miller, J. Corey.
Two double-limit tobit models are used to identify significant risk factors that most affect farm-raised catfish losses from weather-related events and from disease outbreaks. Results of the weather loss model indicate that the variables for operator education level, number of ponds, pond water depth, production management strategy, past experience with severe losses from low oxygen levels from off-farm power outages, past experience with severe losses from diseases, and being in the South are statistically significant. Results of the disease loss model indicate that the variables for operator experience and pond water depth are significant. De-velopment of models explaining weather and disease losses through observable variables pro-vides a better...
Tipo: Journal Article Palavras-chave: Aquaculture; Tobit; Risk management; Columnaris; Enteric septicemia of catfish; Weather losses; Livestock Production/Industries; Risk and Uncertainty.
Ano: 2008 URL: http://purl.umn.edu/44736
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Market Structure Conduct Performance Hypothesis Revisited Using Stochastic Frontier Efficiency Analysis AgEcon
Shaik, Saleem; Allen, Albert J.; Edwards, Seanicaa; Harris, James.
Stochastic frontier analysis, which is used to estimate the technical efficiency, is extended to examine the market structure, conduct and performance hypothesis for the U.S. trucking industry. The technical efficiency measure takes into account not only the relationship between inputs used in the production of output but also simultaneously examine the importance of market structure conduct factors on the performance of the firm. An empirical application to U.S. trucking carriers over the period 1994-2003 is examined. Results reveal that the variables average haul, average load, debt-to-equity and market concentration significantly affected technical efficiency. Capital, fixed and variable input variables were significant in the production function...
Tipo: Report Palavras-chave: Demand and Price Analysis; Marketing.
Ano: 2009 URL: http://purl.umn.edu/55121
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Market Structure Conduct Performance (SCP) Hypothesis Revisited using Stochastic Frontier Efficiency Analysis AgEcon
Edwards, Seanicaa; Allen, Albert J.; Shaik, Saleem.
Use of efficiency measures as a proxy for performance to test the market structure-conduct-performance (SCP) hypothesis is explored. Utilizing Battese and Coelli specification, we estimate stochastic frontier production function and SCP equations with output and efficiency measures as endogenous variables. An empirical application to U.S. trucking carries over the period 1994-2003 with emphasis on the agricultural commodity and refrigerated food products carriers is examined. Results reveal that the variables average haul, average load and market concentration significantly affected the efficiency of firms with 2-8 number of years within each firm.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2006 URL: http://purl.umn.edu/21350
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