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排序方式: 共有200条查询结果,搜索用时 15 毫秒
1.
Will Sanders 《Australian journal of political science》1988,23(1):32-47
This paper analyses the development of an Aboriginal ‘workfore’ program which operates in remote communities, the Community Development Employment Projects (CDEP) scheme, from its conception back in the mid 1970s through to the present day. It identifies a number of distinct periods in the development of the program; a period of debate surrounding its conception, an initial pilot period of operation beginning in 1977 in which the scheme endured both significant criticism and severe budgetary and administrative problems, a period of review and hesitation from 1980 to 1983 and a period of expansion and success since 1984. These changing fortunes of the CDEP scheme are explained through reference to three underlying forces which have contributed to the development of the program over the years; bureaucratic politics, Aboriginal community politics in remote areas and the the rising levels of unemployment in the Australian community more generally. 相似文献
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Ralph M. Braid 《Journal of regional science》1996,36(2):217-234
ABSTRACT. This paper examines the socially optimal locations of branch facilities (or small stores) and main facilities (or large stores) on a finite linear market that is uniformly populated from position 0 to position 1. Each consumer has a probability w of finding the desired service (or product) at a branch facility, and a probability 1 of finding the desired service (or product) at a main facility. Two types of consumer search are considered: phone search and visit search. Different assumptions are made about the numbers of branch facilities and main facilities (each involving one or two facilities of each type). Under visit search, the socially optimal locations of branch facilities tend to be closer to main facilities than under phone search, and this tendency is more pronounced for smaller values of w. 相似文献
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Ralph E. J. Boerner Michael N. DeMers John W. Simpson Francisco J. Artigas Alejandra Silva Leslie A. Berns 《Geographical analysis》1996,28(1):56-66
This study examined landcover change during 1940–1988 in two contiguous landscapes of approximately 12,400 hectares in central Ohio, USA: an inertial till plain area and a more dynamic moraine area. Agriculture dominated both landscapes throughout, however, the cover of natural vegetation and urban-suburban development increased over time on the moraine while natural vegetation decreased and agriculture increased on the till plain. Markov process models for landcover change were constructed for three 14–17-year time intervals and for the entire forty-eight-year study period. Probabilities of self-replacement for agricultural lands (0.91–0.97) were higher and those for forests (0.54–0.65) lower than those reported for other landscapes. Predictions of landcover percentages for fifty years in the future were made using Markov process models derived from actual cover changes in 1940–1957, 1971–1988, and 1940–1988. All three models produced similar predictions for the inertial till plain area. In contrast, the three models' predictions differed considerably for the moraine area. Only the 1971–1988 transition matrix was sensitive to increases in urbanization and reforestation which began on the moraine in the 1970s. These results indicate that reliance on lengthy study intervals and net rates of change can obscure spatial and temporal patterns of landcover change that are caused by natural and socioeconomic factors operating on shorter time scales. 相似文献
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