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991.
Probabilistic risk analyses often construct multistage chance trees to estimate the joint probability of compound events. If random measurement error is associated with some or all of the estimates, we show that resulting estimates of joint probability may be highly skewed. Joint probability estimates based on the analysis of multistage chance trees are more likely than not to be below the true probability of adverse events, but will sometimes substantially overestimate them. In contexts such as insurance markets for environmental risks, skewed distributions of risk estimates amplify the "winner's curse" so that the estimated risk premium for low-probability events is likely to be lower than the normative value. Skewness may result even in unbiased estimators of expected value from simple lotteries, if measurement error is associated with both the probability and pay-off terms. Further, skewness may occur even if the error associated with these two estimates is symmetrically distributed. Under certain circumstances, skewed estimates of expected value may result in risk-neutral decisionmakers exhibiting a tendency to choose a certainty equivalent over a lottery of equal expected value, or vice versa. We show that when distributions of estimates of expected value are, positively skewed, under certain circumstances it will be optimal to choose lotteries with nominal values lower than the value of apparently superior certainty equivalents. Extending the previous work of Goodman (1960), we provide an exact formula for the skewness of products. 相似文献
992.
993.
Abbott L. Ferriss 《Social indicators research》2001,55(3):361-361
Authors Index
Index of Authors Volume 55, 2001 相似文献994.
Hagerty Michael R. Cummins Robert A. Ferriss Abbott L. Land Kenneth Michalos Alex C. Peterson Mark Sharpe Andrew Sirgy Joseph Vogel Joachim 《Social indicators research》2001,55(1):1-96
A number of governments and public policy institutes have developed Quality of Life Indexes – statistics that attempt to measure the quality of life for entire states or regions. We develop 14 criteria for determining the validity and usefulness of such QOL indexes to public policy. We then review 22 of the most-used QOL indexes from around the world. We conclude that many of the indexes are successful in that they are reliable, have established time series measures, and can be disaggregated to study subpopulations. However, many fall short in four areas: (1) indexes vary greatly in their coverage and definitions of domains of QOL, (2) none of the indexes distinguish among the concepts of input, throughput, and output that are used by public policy analysts, (3) they fail to show how QOL outputs are sensitive to public policy inputs, and (4) none have examined convergent validity against each other. We conclude that many of these indexes are potentially very useful for public policy and recommend research to further improve them. 相似文献
995.
Ransdell LB 《Journal of women & aging》2001,13(1):39-55
Women have been traditionally ignored in health and medical research. Some reasons for this mentality include a fear of harming a woman's reproductive ability, fear that variations in the menstrual cycle could confound results, fear that a woman's body could not withstand the rigors of clinical research, and an assumption that male and female body chemistry is similar. Thankfully, these fears and assumptions are being challenged and several major data-bases, designed specifically to study women's health, have emerged. The purpose of this paper is to: (1) characterize the major longitudinal studies on women's health, (2) summarize the major discoveries from these studies that are relevant to older women, and (3) pose several future directions for research throughout the paper. 相似文献
996.
This is a study about aging women veterans who served in the military during the 1940s, 1950s and 1960s. The Veterans Administration (VA) represents a formal network of health and support services that offers a wide range of benefits for veterans. However, older women veterans may not be aware of, or benefit from, all that may be available to them. The purpose of this study was to learn about aging women veterans' knowledge and utilization of services and benefits available through the VA. Telephone interviews were conducted in April 1998 with 220 women veterans in Massachusetts who were age 60 + years. There was generally strong identification with veterans' organizations among the women surveyed. These women veterans were likely to receive medical care-a major benefit available through the VA. The benefits veterans were least likely to know about included services that may be particularly relevant and helpful to an aging veteran, such as long-term care and home adaptation services. Strategies are suggested to enhance outreach efforts to aging veterans. 相似文献
997.
Correspondence to Professor Richard Hugman, School of Social Work, University of New South Wales, Sydney, NSW 2052, Australia. E-mail: r.hugman{at}unsw.edu.au Summary The postmodern turn in social theory has raisedquestions for understanding the social world. The implicationsof these debates for social work values and ethics are the centralfocus of this article. The implications of a postmodern viewof social work are examined and compared with criticisms ofpostmodern theory. It is argued that a critical considerationof postmodern insights may assist social work to examine thediverse, provisional and uncertain nature of all aspects ofour world, including knowledge and skills, values and ethics.Such an approach strengthens the case for a discursive modelof ethics. 相似文献
998.
999.
The Comprehensive Everglades Restoration Plan, enacted in 2000, is a $7.8 billion federal/state investment in restoring the Florida Everglades ecosystem. The plan is a negotiated compromise between divergent interests in south Florida and promises to provide water and flood control for urban and agricultural users while maintaining a priority commitment to the natural system when allocating water produced by the 30-year project. The environmental community calls for independent scientific review of un-tested technologies, early and substantial hydrologic benefits to the remaining Everglades, including Everglades National Park, and strong programmatic regulations of the federal project to ensure that ecological restoration remains its primary purpose in spite of inherently conflicting interests at the state and local level. 相似文献
1000.
The immaturity of the evidence base in some areas of child welfare practice demands that practitioners approach the development and refinement of practice in a systematic way that explicitly seeks to build on and learn from experience. The efforts of public child welfare agencies in Boston and Cleveland show that it is possible to draw on a broader base of knowledge and experience while responding to unique conditions and circumstances in each agency's community. 相似文献