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51.
The southern pine beetle (SPB) is among the leading biological agents killing southern pine species in the eastern United States. In light of recognized spatiotemporal autocorrelation in SPB outbreaks, we devise a spatiotemporal block bootstrapping method that can be applied to analyze spatiotemporally dependent infestations. We also identify the relevant risk determinants and evaluate their impacts on the frequency of SPB outbreaks. For example, we find forest type, climate, and natural disasters like storm and forest management are all significantly associated with SPB risks. Using the results of a statistical model, we design a county-level group index insurance plan that generates estimates of actuarially fair premium rates for timber stands containing southern pine species. Given that no government-provided compensation scheme for SPB epidemics currently exists, application of this new insurance product could reduce forest owners losses. Our study offers an approach to analyzing and protecting against risks of other destructive pests affecting the timber sector. 相似文献
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This article extends the economic theory of index numbers to the aggregation of price risk over commodities in production. Superlative indexes of aggregate price risk are related to Tornqvist and Fisher−type output quantity indexes. An application to major crops in Manitoba illustrates the empirical importance of the analysis. 相似文献
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The factors determining foreign bank efficiency are investigated using a three stage research method. It is found that host market incumbency reduces efficiency of foreign banks in Australia, resulting in over use of inputs. Factors underlying the limited global advantage hypothesis of Berger et al. [Berger, Allen N., DeYoung, Robert, Genay, Hesna, Udell, Gregory F., 2000. Globalisation of financial institutions: Evidence from cross-border banking performance. Brookings-Wharton Papers on Financial Service 3, 23–120] are identified, in that nationality specific factors represented by dummy variables are not significant once other relevant effects are controlled for. Parent profitability is not found to result in increased host nation efficiency, while parent credit rating effects are mixed. Some evidence is presented that banks from more financially sophisticated nations are more efficient. The implications of these results are explored from the perspectives of bank management and bank regulators. 相似文献
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Matthew Cole Mara Miele Peter Hines Keivan Zokaei Barry Evans Jo Beale 《International Journal of Consumer Studies》2009,33(2):162-167
Animal farming exceeds all forms of transport in terms of global greenhouse gas (GHG) emissions. Despite the implications of the seriousness of addressing animal farming in relation to mitigating the effects of GHG emissions, to date, the relationship between consumer behaviour and climate change has tended to neglect the role of animal foods. This paper reports on a pilot study in which six UK households were ‘shadowed’ to facilitate the investigation of the relationship between animal food practices and environmental practices, as they emerge in day‐to‐day life. Results indicate that most participants make no connection between the two issues at present, in terms of awareness or practice. However, animal foods do have an ambiguous and complex status in most participants' food practices; for instance, being viewed as problematic for reasons of health or animal welfare. This finding suggests that further research is needed into the potential for raising awareness of the link between animal‐based foods and climate change. This might have a role to play in shifting food practices towards more plant‐based, less GHG intensive, foods. 相似文献
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Frank Barry 《Development Southern Africa》2000,17(3):289-305
Ireland has been the economic success story of the 1990s. Growth in GNP and in employment has far exceeded those seen elsewhere. We ask first whether this is simply a delayed catching-up process. Even if this turns out to be so, the question remains as to what the key differences in policy were between the unsuccessful phase, from 1950 to 1988, and the phenomenally successful phase since then. We present a brief overview of the key differences in terms familiar from conventional growth theory, and go on to look more carefully at the constellation of factors explaining the precise timing of the turnaround in economic fortunes. 相似文献
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For good or bad, shopping and gifting are intertwined. This research looks at sources of gratification associated with shopping for gifts. More particularly, the roles played by general and specific shopping orientations in shaping gift shopping value and satisfaction are examined. Results from testing a theoretical model suggest that gift shopping orientations, such as agape, may dominate general shopping orientations, such as price consciousness. Also, the important role played by utilitarian shopping value is consistent with gift shopping more as a job than as a source of leisure. However, the results fall short of suggesting a negative relationship between gift shopping and hedonic shopping value. So gift shopping may be a job, but a job that is not so horrible after all. © 2007 Wiley Periodicals, Inc. 相似文献
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