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This paper develops a methodology to estimate the regional economic impacts of electricity lifeline disruptions caused by a catastrophic earthquake. The methodology is based on specially designed input-output and linear programming models. A simulation of a major earthquake in the New Madrid Seismic Zone near Memphis, Tennessee, indicates the potential production loss over the recovery period could amount to as much as 7 percent of gross regional product. Reallocation of scarce electricity across sectors could reduce the impacts substantially. Additionally, an improved restoration pattern of electricity transmission substations across subareas could reduce losses even more.  相似文献   
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This study investigated changes in Australian children's independent mobility levels between1991 and 2012. Data from five cross-sectional studies conducted in 1991, 1993, 2010, 2011 and 2012 were analysed. Parent and child surveys were used to assess parental licences for independent mobility and actual independent mobility behaviour in children aged 8–13 years. Findings show declines in the proportion of young children (≤10 years of age) being allowed to travel home from school alone (1991: 68%, 1993: 50%, 2010: 43%, 2011: 45%, 2012: 31%) and travel on buses alone (1991: 31%, 1993: 15%, 2010: 8%, 2011: 6%, 2012: 9%). Furthermore, the proportion of children travelling independently to school decreased (1991: 61%, 1993: 42%, 2010: 31%, 2011: 32%, 2012: 32%). Significantly fewer girls than boys travelled independently to school at each time point (p??.001). Overall, the findings suggest that Australian children's independent mobility levels declined between 1991 and 2012.  相似文献   
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This article examines the newsboy as both an important figure of early twentieth-century Irish streets and also a vital final link in the chain of media production and distribution at the time. Despite the advent of industrial communications and manufacturing processes in print culture well before the end of the nineteenth century, newspapers in particular were ultimately dependent upon boys as young as eleven years old to sell copies, especially in urban areas. Newsboys were very visible and audible figures on Irish city streets, and presumably because of this were themselves the subject of frequent newspaper stories. This article explores the way in which newsboys were both part of the newspaper industry while simultaneously being represented in the press as exemplars of the urban working classes for middle-class readers.  相似文献   
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Historical perspectives can be embedded into policy initiatives through a process of ‘past-proofing’—ensuring new policies take the study of the past into consideration. We describe how this was done in a project looking at patient access to general practice in the NHS. We argue that current preoccupations with timeliness which have led to the marginalisation of other dimensions of access are connected to a broader process of neo-liberal reform since the 1970s. This reflection can support a reframing of the terms of current debates on a major issue in British health care. It has wider implications for the policy relevance of history.  相似文献   
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