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21.
Udvarhelyi IS Relman AS Binder GM Spence RK Kennedy EM Grossman JH Termeer HA Raines LJ Marincola E Pyle TO 《Harvard business review》1994,72(5):45-7, 50, 52 passim
In "Making Competition in Health Care Work" (July-August 1994), Elizabeth Olmsted Teisberg, Michael E. Porter, and Gregory B. Brown ask a question that has been absent from the national debate on health care reform: How can the United States achieve sustained cost reductions while at the same time maintaining quality of care? The authors argue that innovation driven by rigorous competition is the key to successful reform. A lasting cure for health care in the United States should include four basic elements: corrected incentives to spur productive competition, universal insurance to secure economic efficiency, relevant information to ensure meaningful choice, and innovation to guarantee dynamic improvement. In this issue's Perspectives section, eleven experts examine the current state of the health care system and offer their views on the shape that reform should take. Some excerpts: "On the road to innovation, let us not forget to develop the tools that allow physicians, payers, and patients to make better decisions." I. Steven Udvarhelyi; "Health care is not a product or service that can be standardized, packaged, marketed, or adequately judged by consumers according to quality and price." Arnold S. Relman; "Just as antitrust laws are the wise restraints that make competition free in other sectors of the economy, so the right kind of managed competition can work well in health care." Edward M. Kennedy "Biomedical research should be considered primarily an investment in the national economic well-being with additional humanitarian benefits." Elizabeth Marincola. 相似文献
22.
Consumers and the producers have shown interest in organics, but there exist gaps in their common interest. Producers require premiums for their products based on the peculiarity of their production circumstances and the perceived benefits inherent in their products. Predicting consumer willingness to pay a premium for the environmental benefits of organics (WTPe) is a challenge and is of interest in this study. The contingent valuation method was used to gather information on WTPe from a sample that yielded 2,099 surveys. The econometric test ordered probit regression and other analyses were carried out. On average, respondents indicated WTP 23% premium. The proposed hypotheses were tested, and all were accepted except social demographic variables that presented a mixed outcome. The results have implications for consumer sensitization and enlightenment programs of the wine industry, wine market segmentation, and government’s climate change policy. This study is exploratory and has presented a snapshot scenario. Confirmatory and longitudinal studies are recommended to validate this study’s outcomes. 相似文献
23.
OPTIMAL INVESTMENT STRATEGIES FOR CONTROLLING DRAWDOWNS 总被引:5,自引:0,他引:5
We analyze the optimal risky investment policy for an investor who, at each point in time, wants to lose no more than a fixed percentage of the maximum value his wealth has achieved up to that time. In particular, if M t is the maximum level of wealth W attained on or before time t , then the constraint imposed on his portfolio choice is that Wt α M t , where α is an exogenous number betweenα O and 1. We show that, for constant relative risk aversion utility functions, the optimal policy involves an investment in risky assets at time t in proportion to the "surplus" W t - α M t . the optimal policy may appear similar to the constant-proportion portfolio insurance policy analyzed in Black and Perold (1987) and Grossman and Vila (1989). However, in those papers, the investor keeps his wealth above a nonstochastic floor F instead of a stochastic floor α M t . the stochastic character of the floor studied here has interesting effects on the investment policy in states of nature when wealth is at an all-time high; i.e., when Wt = M t . It can be shown that at W t = M t , α M t is expected to grow at a faster rate than W t , and therefore the investment in the risky asset can be expected to fall. We also show that the investment in the risky asset can be expected to rise when W t is close to α M t . We conjecture that in an equilibrium model the stochastic character of the floor creates "resistance" levels as the market approaches an all-time high (because of the reluctance of investors to take more risk when W t = M t ). 相似文献
24.
This article contributes to the literature examining how stress during the early stages of life impacts later-life health using a novel proxy for stress: risk of military induction during the Vietnam War. The article estimates that an increase in induction risk in young adulthood is associated with higher rates of obesity, endocrine disease, and hypertension later in life. These findings do not appear to be cohort effects; these associations exist only for men who did not serve in the war, not for same-aged women. These results suggest stress experienced during early adulthood can have adverse health consequences later in life. 相似文献
25.
We examine two different ways to subsidize charitable giving: by a rebate (returning a portion of the donation to the giver) or by a match (adding additional donations to the giver's donation). In previous experimental research, we have shown that participants give more to charity under the match than under an equivalent rebate. The previous within-subject experimental design required participants to make a series of decisions under both types of subsidy. Each decision consisted of an allocation of an endowment between the subject and a charity chosen by the subject from a specified list. This article examines whether that result is an artifact of the previous within-subjects design: subjects may have failed to fully distinguish the two types of subsidy. In the current article, we report results from a between-subjects design, where participants are required to make only one type of decision—involving rebates or involving matching subsidies. Our results confirm previous findings. 相似文献
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We report results of an experiment designed to assess the impact of Hurricane Katrina on the pattern and level of charitable contributions of donors. The study includes an experimental measure of charitable giving and targets three charities: the American Red Cross, the Salvation Army, and Oxfam International. In the experiment subjects make allocation decisions from three endowments ($10, $20, and $50) and with four different matching subsidies (0%, 25%, 50%, and 100%), with the matching amount provided by the experimenter. Two locations (Texas and Minnesota) and two information conditions are used. Survey measures of sympathy, risk perceptions, and perceptions of Katrina victims are also collected. The probability and amount of giving are responsive to the experimental design parameters—the endowment and match. We find evidence of “Katrina overload” as those closest to the disaster respond negatively to Katrina-related priming information. Perceptions of the psychological attitudes of the victims of the disaster have a significant effect on the amount given. 相似文献
28.
The divorce rate in the United States has increased over the last 40 years. This increase was accompanied both by growing female labor force participation and rising female income. These changes were accompanied by a significant reduction in the birth rate for married women. This article uses time-series data and cointegration techniques to determine the direction of causality between these variables. Analysis of the impulse functions show that the divorce rate will increase if either female labor force participation or income increases. Positive innovations to the divorce rate increase the labor force participation rate of married women. Rising levels of income lead to greater female participation in the labor market. 相似文献
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Industry classifications are used by investors, economists, and policy makers for a great variety of purposes. The traditional economic‐activity‐based systems (Global Industry Classification Standard, North American Industry Classification System, Standard Industrial Classification, and Fama–French) have been supplemented in recent years by alternative classification systems. Our purpose is to provide another alternative system that forms classification groups based on the structure of firm financial statements. Using cluster analysis, a multivariate tool that forms groups where their characteristics are similar within groups and distinct across groups, we form clusters of large U.S. firms based on their common‐size financial statements (percentage breakdowns of balance sheets and income statements). We characterize the financial clusters based on their industry classifications and other economic information and assess the ability of financial clusters and industry groups, separately and jointly, to explain stock return correlations of all pairs of firms. Our results demonstrate that using financial clusters and industry groups together proves advantageous relative to using either alone. 相似文献