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131.
An Optimum Population for North and Latin America 总被引:1,自引:0,他引:1
The population of North America, which now stands at nearly 300 million people, is projected to double in about 60 years, while the population of nearly 500 million people in South America is projected to double in less than 40 years. Both of these populations obtain more than 99% of their food from the land, and this percentage will increase as these populations grow. Maintaining fertile and ample land is critical if these large populations are to be fed. Soil degradation by soil erosion is a serious problem on both continents. In addition, agricultural land is being lost to urbanization and highways because of rapid population growth. Nearly a half hectare of land is needed for urbanization for each person added to the North American population; this is already causing serious problems with agriculture in some states in the United States. The land resources that are critical for food production will be especially so if the populations of both continents double to nearly 2 billion. Land resources will also be critical when both continents deplete their fossil fuels in less than 100 years and have to turn to renewable energy sources. With about 2 billion people, there will be serious shortages of food, water, and energy resources and the standard of living will significantly decline. Our assessment suggests that for a relatively high standard of living in North and South America each continent should have no more than about 200 million people, or a total of 400 million. 相似文献
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Since the introduction of federal mental health legislation in 1963, there has been a changing emphasis on evaluation and accountability. With direct federal funding of community mental health services, accountability demands were met through expectations for local agency evaluation activities which were overseen by federal authorities. The advent of the New Federalism and the shift to block grant funding of mental health services to state mental health authorities have shifted responsibility for evaluation to the states and local programs. This paper reviews federal mental health statutes to trace the extent and locus of required evaluation activities and discusses two approaches to carrying out program evaluation: "top-down" where the evaluation topic, method, and data collection are mandated by an administering or funding body; and "bottom-up" approaches where the subject, method of study, and data to be collected are developed in response to a felt need at the local agency level. A case study of each approach as used at the state level in mental health is examined. Based on the literature and the case studies, conclusions are presented on the pro's and con's of each method in meeting accountability demands and the barriers which must be overcome for either method to be successful. 相似文献
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Sandra Minor Bulmer PhD Syed Irfan MPH Raymond Mugno PhD Barbara Barton RN MPH Louise Ackerman MPH 《Journal of American college health : J of ACH》2013,61(4):383-390
Abstract Objective: This study examined alcohol consumption patterns and trends at a public university in the Northeast from 2002 to 2008. Participants: Stratified random sampling was used to select undergraduate students enrolled in courses during spring semesters in 2002, 2004, 2006, and 2008. Methods: Data were collected during regularly scheduled classes for 4 measures of alcohol consumption and 5 demographic categories using the Core Alcohol and Drug Survey. Results: Four groups showed significant increases in both frequency and volume of alcohol consumption—students who were female, over 21 years of age or over, living off-campus, or performing well academically. There were no decreasing trends for any demographic group. These results differ from national college health surveys, which have shown alcohol use remaining steady during this period. Conclusions: Campus-specific trend data can provide unique perspectives and guide programming efforts. These trends suggest a need for new intervention strategies on this campus. 相似文献
135.
Sandra Klopper 《Social Dynamics》2013,39(1):39-51
This paper explores a number of issues raised by William Burton's annotated photographs of professional artists (or craft specialists) taken at his mission station in Katanga province in the 1930s. It focuses, in particular, on why Burton recorded the names of two carvers, one a chief, the other a court sculptor attached to the Nkulu chieftainship. The questions raised by this decision leads me to consider the relationship between indigenous consumer attitudes to African artists, and changing perceptions of the identity and status of these artists by foreign buyers and art historians since the early 20th century. In the course of this discussion I draw attention to the fact that it is only in context‐specific studies of patronage that meaningful attempts have been made to address the ways in which artists themselves have responded to the increasingly complex marketplace in which they now work. 相似文献
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Sandra Waddock 《International Journal of Value-Based Management》2001,14(3):237-246
This paper explores values that underpin corporate citizenship embedded in operating practices as they affect stakeholders.
Fundamentally, the paper argues that corporate citizenship is embedded integrally in the day-to-day operating practices that
companies develop to relate to their important stakeholders. This systems perspective incorporates not only the objective
but also subjective and intersubjective aspects of human civilization and arguably provides a systems basis for thinking about
the roles and responsibilities of the corporation in society.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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