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In this article, we develop an empirical model of an agro-pastoral system subject to high climatic risk in order to test the impact of rainfall variability on livestock densities, land allocation patterns and herd mobility observed at the community level. Also, because grazing land is a common-pool resource, we determine the impact of cooperation on these decision variables. To capture different abilities of communities to cooperate in managing these externalities, we construct indices comprised of factors considered to affect the costliness of achieving successful cooperation. We then test hypotheses regarding the impact of rainfall variability and cooperation, using data collected in a semi-arid region of Niger. Results indicate that rainfall variability initially leads to higher densities, but the impact becomes negative as variability increases still further. This result indicates that the benefits of accumulating large herds in variable environments are eventually offset by the increasing probability of large losses. Mobility in the current period is strongly related to current rainfall, and is also positively related to long-term rainfall variability. Communities with characteristics hypothesised to favour cooperation have lower stock densities and greater herd mobility. Neither cooperation nor rainfall variability has a significant impact on the proportion of land allocated to crops or common pastures. 相似文献
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The End of Dual Containment: Iraq, Iran and Smart Sanctions 总被引:1,自引:0,他引:1
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Fraser Cameron 《北京周报(英文版)》2012,55(33)
While most of Europe goes on holiday or sits glued to the London Oympics,the euro sovereign debt crisis continues to preoccupy policymakers.In the last week of July,it appeared as if the crisis had reached Olympian proportions as the Spanish Government looked set to follow its banks and seek a bailout from the EU.Dealing with Greece is one problem.Dealing with Spain,and potentially Italy,are problems of a vastly different dimension.As rumors grew of a Spanish bailout request,markets fell and the euro dipped against the dollar. 相似文献
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Ryan S. Berry B.S. Michelle B. Aurelius M.D. Nancy Barickman M.S.W. L.I.S.W. Sarah L. Lathrop D.V.M. Ph.D. 《Journal of forensic sciences》2013,58(2):380-384
Medical examiner/coroner's (ME/C) offices investigate sudden, violent, and unexpected deaths, leaving those close to the deceased suffering traumatic loss with little in terms of support and counseling. We investigated a grief services program (GSP) at the New Mexico Office of the Medical Investigator (OMI) to better understand the needs of bereaved individuals, identify the services provided, and propose our findings as a model for others. A total of 1085 contacts occurred over 1 year, with the majority occurring at OMI (60.5%), followed by telephone (23.1%). Support was primarily provided to those suffering a loss due to homicide (28.8%) and suicide (26.1%). The roles grief counselors play in the setting of a GSP and ME/C office are multiple. Given the frequent utilization of OMI's GSP and diverse reasons for visits, it is apparent there is a need for GSPs at ME/C offices, particularly given the traumatic nature of deaths investigated by ME/Cs. 相似文献
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Eric G. Lambert Nancy L. Hogan Kelly Cheeseman 《Journal of Police and Criminal Psychology》2013,28(1):35-47
Fairness and justice are valued concepts throughout the entire criminal justice system, and they do not resonate any less with employees in the field of corrections. Distributive and procedural justice, two dimensions of organizational justice, were postulated to have salient outcomes for correctional staff. While a growing number of studies have examined the effects of distributive and procedural justice, their effects have not been fully explored. Strain-based work-family conflict occurs when conflict at work spills over and has a detrimental effect on home life. Hierarchical regression analysis of two different surveys of correctional staff, one at a private correctional facility for juveniles run on behalf of the state and another at an adult public state-run correctional facility, indicated that both distributive justice and procedural justice had negative relationships with strain-based work-family conflict. 相似文献
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This article considers some of the beneficial and detrimental influences of media coverage of celebrity criminal trials based on a survey administered during the criminal trial of O.J. Simpson. Analysis indicates those who exhibited a stronger psychological involvement with Simpson developed through repeated media exposure were more likely to believe his innocence. African American respondents also were more likely to believe in Simpson's innocence than were others. Gender had no effect on beliefs of Simpson's guilt or innocence. Those with a strong belief in the fairness of the United States justice system more strongly supported unrestricted media coverage of the trial. Anglo Americans more than African Americans believed Simpson's lawyers used the media effectively for their advantage. Learning about the justice system by following the case resulted in increased interpersonal discussions about the legal system. 相似文献