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In a leap of faith, Citibank in 1989 designed a point-of-service plan aimed at containing health care costs in the long term without sacrificing quality of care. In 1994 a study was undertaken to empirically evaluate whether these goals had been achieved. The study supported Citibank's overall managed care strategy, providing objective, quantifiable data that can lead to greater efficiencies. 相似文献
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Previous studies of the potential market for battery electric vehicles (BEVs) from different research streams have failed to converge on a single, robust estimate. What these previous research streams share are untested or implausible assumptions about consumer response to new transportation technology. We frame the BEV purchase decision in terms of a household's entire stock of vehicles, car purchase behavior and travel behavior. Within this framework, households which own both electric vehicles and gasoline vehicles are called ‘hybrid households’. Because nearly all consumers are unfamiliar with the characteristics of BEVs, we designed an interactive interview based on week-long travel diaries, which we call Purchase Intentions and Range Estimation Games (PIREG) to explore hypothetical hybrid household vehicle use. Our primary finding is that consumers' perceived driving range needs are substantially lower than previous hypothetical stated preference studies conclude. We find evidence of a viable market for BEVs with 60 to 100 miles driving range. 相似文献
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Lena Lindbjerg Sperling Anders Oskar Kjøller-Hansen 《Economics Letters》2012,115(2):252-255
We perform development accounting in accordance with
[Weil, 2005] and [Weil, 2007] in a cross-state analysis of India. Results of similar magnitude are found, demonstrating that health can account for 1% to 18% of income differences depending on the health measure. 相似文献
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Seed interventions are the major agricultural response during emergency and recovery phases of humanitarian relief. They are implemented by diverse agencies, and widely promoted: for instance the FAO alone managed 400 such projects between 2003 and 2005. However, seed aid suffers from a lack of critical attention, perpetuating widespread myths among practitioners, policymakers, and the larger humanitarian community. This paper challenges five predominant myths about seed aid: (1) seed aid is needed whenever food aid is; (2) seed aid can do no harm; (3) disasters wipe out seed systems; (4) effective implementation is a straightforward logistical exercise, and; (5) improved seed is the best form of aid. These myths are juxtaposed with recent empirical work across a range of countries, particularly in Eastern and Southern Africa. The perpetuation of such myths highlights a serious absence of scrutiny of emergency seed aid, and helps explain why such aid is repeated year after year in many sites, with little apparent positive effect. The paper argues that the invisibility of seed aid is a major cause for the lack of oversight and concludes that donors and farmer beneficiaries must become centrally involved in seed aid governance. 相似文献
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Michael Staak Hans Peter Ipsen Wulf-Henning Roth Karl Sieg Dieter Farny Manfred Werber Hansjürgen Herrmann Jürgen Sieger Hanns Köhler Herbert Waldemer Karl-Otto Körber Bruno Schönfelder Géza v. Puskäs Edgar Müller-Gotthard Othard Raestrup Fritz Hauss Erwin Deutsch Dieter Farny Klaus Sperling 《保险科学杂志》1985,74(1):111-168
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Since the late‐1980s, empirical analysis has typically analysed the extent of market power in the food industry using structural econometric models drawing on an approach commonly termed the new empirical industrial organisation (NEIO). In this paper, we examine what has been learned from the use of this methodology, and consider whether it has relevance for empirical analysis of market power in food retailing, and the nature of vertical contractual arrangements between food manufacturers and retailers. 相似文献