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Walter B 《Transactions (Institute of British Geographers : 1965)》1980,5(3):297-317
"A time-space model, based on Hagerstrand's (1969) methodology, is used to illustrate the diffusion of a migration-stream into new areas at destination and the associated changes in community characteristics at different stages in the settlement sequence." Published regional census data and interviews with Irish-born residents of England provide data on Irish migration into and within Britain since the 1930s 相似文献
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The Resource Conservation and Recovery Act of 1976 (RCRA) assigns the Environmental Protection Agency responsibility for protecting the public from hazards created by industrial wastes. The Agency has understandably used its mandate to construct cradle to grave regulation of waste substances that pose health hazards. The regulations, however, are likely to hike costs of legal disposal by increasing the demand for disposal sites, while at the same time reducing the supply. The higher cost of disposal may give an advantage to larger, existing firms, may deter entry of new firms to both waste generating and disposal industries, and promote illicit disposal. RCRA therefore may have the paradoxical result of increasing public exposure to hazardous wastes. 相似文献
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Current figures (compiled in 1995) indicate that hazardous waste transporters (19,567 in number) ship approximately 16 million tons of hazardous waste annually in the United States (United States Environmental Protection Agency, 1995). While some state and local governments have enacted hazardous waste transport regulations for the protection of their citizens, the federal government has had primacy in initiating and setting the course of hazardous waste transport regulation. As a result, the predominant perspective on hazardous waste transport has been technical in orientation. This paper identifies and discusses how this technical perspective and the social perspective differ and what the consequences are for government policies and actions regarding hazardous waste transport. 相似文献