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Since its introduction to a wondering public in 1972, the Cox proportional hazards regression model has become an overwhelmingly popular tool in the analysis of censored survival data. However, some features of the Cox model may cause problems for the analyst or an interpreter of the data. They...
Persistent link: https://www.econbiz.de/10009442279
Categorical and limited dependent variable models are routinely estimated via maximum likelihood. It is well-known that the ML estimates of the parameters are inconsistent if the distribution or the skedastic component is misspecified. When conditional moment tests were first developed by Newey...
Persistent link: https://www.econbiz.de/10009442280
The area under the receiver operating characteristic (ROC) curve is often used to summarize and compare the discriminatory accuracy of a diagnostic test or modality, and to evaluate the predictive power of statistical models for binary outcomes. Parametric maximum likelihood methods for fitting...
Persistent link: https://www.econbiz.de/10009442283
The present paper demonstrates that treating multidestination trips (MDT) as single‐destination trips does not involve any systematic upward or downward bias in consumer surplus (CS) estimates because the direct negative effect of a price increase (treating MDT as a single‐destination trip)...
Persistent link: https://www.econbiz.de/10009442606
The architecture of the firm involves determination of a boundary that encompasses the functions managed by thefirm. The past decade has seen substantial reorganization of firms where vertical or horizontal integration has beenunbundled into weaker forms of collaborations including value chains...
Persistent link: https://www.econbiz.de/10009442664
The interconnections of agriculture and energy markets have increased through the rise in the new biofuel agribusinesses and the oil–ethanol–corn linkages. The question is whether these linkages have a causal structure by which oil prices affect commodity prices and through these links,...
Persistent link: https://www.econbiz.de/10009442693
This work was aimed at analysing the effects of the sudden food price explosion followed by pricecrash which occurred recently on the foreign trade of the food economy. Comparison of the balances of thedifferent countries was difficult due to the differences in the absolute dimensions; therefore...
Persistent link: https://www.econbiz.de/10009442698
In this article, intraseasonal fishing is modeled as a differential game between fishers in a total allowable catch (TAC)–regulated fishery with and without individual fishing quotas (IFQs). Heterogeneous harvest values are included by incorporating time-specific harvest costs and a...
Persistent link: https://www.econbiz.de/10009442721
This article characterizes anticipated changes in fleet structure, vessel harvesting activity, and economic performance in the Pacific Coast groundfish fishery under an individual fishing quota management program. Results suggest that the current fleet of 117 vessels will be reduced by roughly...
Persistent link: https://www.econbiz.de/10009442722
Self management of natural resources has started to gain increasing attention as an alternative tool to command-and-control and market-based tools, but the fundamental question remains: is self management economically beneficial such that it should be promoted in the first place? This article...
Persistent link: https://www.econbiz.de/10009442723