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Previous studies have established that repeat victimizations occur more frequently than would be expected if households within a particular area were victimized randomly. This implies that characteristics of the household affect the victimization rate. Even controlling for these characteristics, we find that a Poisson model does not capture the distribution of victimizations because repeat victimizations are more concentrated than it would indicate. This leads us to adopt the negative binomial generalization of the Poisson model. Our analysis uses sociodemographic attributes of the household and community-level characteristics to predict victimizations, with the victimization data being the observed number of property crime victimizations from the 1992 British Crime Survey. The negative binomial generalization is found to be highly statistically significant and the crime concentration it implies becomes much more marked as the predicted number of victimizations increases. 相似文献
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This article puts forward a method for the analysis of constraints faced by developing countries’ smallholder producers. It is consistent with theories of constraints, efficient in terms of cost and researchers’ time, and accessible to a non-technical audience. A hybrid of workshop discussion and individual data collection, it also draws on data and analyses available in most developing countries. The article presents an application to smallholder livestock systems in Tanzania and Uganda, reporting results and analysis relating constraints to households’ characteristics and conditions, and their stated goals. While limitations are identified, it is proposed for application in other development fields. 相似文献
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Derek S. Reveron Author Vitae 《Orbis》2006,50(3):453-468
The Bush administration's designation of its national strategy as a war on terror highlights the importance of combating terrorism on an international level. Fundamental to this effort is bilateral intelligence-sharing. Intelligence reform efforts to date have focused on improving intelligence-sharing within the U.S. intelligence community. However, critical intelligence can be gained through America's international partners. This paper assesses the state of bilateral intelligence-sharing relationships and the challenges that need to be overcome. 相似文献
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