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11.
Allen V. Kneese and F. Lee Brown, The Southwest Under Stress .
Richard A. Berk, et al., Water Shortage . 相似文献
Richard A. Berk, et al., Water Shortage . 相似文献
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Helen Cinsburg 《政策研究杂志》1979,8(3):359-368
Passage of the Humphrey-Hawkins Full Employment and Balanced Growth Act of 1978 is the most recent step in the development of a national full employment policy. This article traces the origin of the legislative debate over full employment back to the 1940s, the only previous time that Congress gave serious consideration to full employment legislation. It analyzes the conflicting economic and political interests and philosophies that led to the defeat of the Full Employment Bill of 1945 and to passage of weaker legislation, the Employment Act of 1946, which dropped the commitment to full employment. The article then traces the contours of unemployment since World War II: recurrent recessions; significant unemployment between recessions; the unequal distribution of joblessness, hitting hardest at groups such as minorities, women, and youths; and growing urban and regional unemployment. Some of the hidden social, human and economic costs of unemployment are explored. So is the relationship between unemployment and crime, poverty, welfare, the urban crisis and inequality. Full employment reemerged as a major issue in the 1970s because of the impetus from groups whose unemployment problems persist between recessions. Coalitions of these groups pressed for a national policy to secure full employment for all groups. This led to passage of the Humphrey-Hawkins Act. But the controversy over full employment has not ended. Attempts to implement the Act, the article concludes, may heighten underlying controversies over issues such as inflation, wage, price and profit controls, the environment, and job creation and may make full employment one of the leading domestic issues of the 1980s. 相似文献
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Ryan Hoult Helen Goldsworthy Elisa Lumantarna 《Journal of Earthquake Engineering》2018,22(8):1447-1478
This research investigates the plastic hinge length in lightly reinforced rectangular walls typically found in regions of low-to-moderate seismicity. Poor performance has been exhibited by lightly reinforced concrete walls in past earthquake events. A series of finite element analyses have been carried out which demonstrate that if the longitudinal reinforcement ratio in the wall is below a certain threshold value, there will not be sufficient reinforcement to cause secondary cracking, and instead fracture of the longitudinal reinforcement at a single crack could occur. A plastic hinge length equation has been derived based on the results from the numerical simulations. 相似文献
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Home range is commonly understood to be the distance from home that children are allowed to go in the outdoor environment with the term being used within various academic disciplines. Different factors influence children's home range including traffic, age, parental fears and understandings of what it means to be a good parent. Research addressing home range over different generations has identified a context of changes in the built environment, demography and technology. This paper reports results from three generations of two families in Sheffield in the north of England and confirms a reduction in four major domains: home range, variety of outdoor spaces visited, range of activities undertaken and the number of companions. 相似文献
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