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D. B. J. Schouten P. Hennipman A. Heertje C. de Galan Th. A. Stevers J. Wemelsfelder H. G. Advokaat J. Horring P. G. Ridder R. J. P. van Glinstra Bleeker J. B. D. Derksen J. S. Cramer F. W. C. Blom A. I. Diepenhorst J. A. Ponsioen A. A. van Rhijn J. G. Lulofs P. van Zuuren L. B. M. Mennes 《De Economist》1964,112(10):692-724
644.
We construct an elementary mechanism [Dutta, B., Sen, A., Vohra, R., 1995. Nash implementation through elementary mechanisms in economic environments. Review of Economic Design 1, 173–203] that Nash implements the constrained Walrasian correspondence. We extend it to incomplete and non-exclusive information economies by enlarging the message space of agents. In addition, measurability restrictions on allocations with respect to prices proper to constrained rational expectations equilibria are imposed in the outcome function. We show that by imposing such restrictions, the mechanism Bayesian implements the constrained rational expectations equilibrium correspondence. This result shows game-theoretic connections between these two market equilibrium concepts. However, these connections are obtained at the price of strong restrictions on the behavior of agents. 相似文献
645.
Biotechnology, whether applied to plants, animals, or humans is a rapidly expanding industry. Citizens, often organized in groups or organizations, wish to express their views and even to participate in the decision-making process that authorized to the marketing of new biotechnology derived products. In order to allow participation of the public in the debate on the ethical and social issues raised by biotechnology, it is important to select appropriate consultation mechanisms. Much may be learned from the experiences and mechanisms used in various countries.Part I of this report surveys various institutional models for public consultation activities. Part II then reviews various mechanisms used to address ethical and social issues with public participation and Part III highlights the strengths and weaknesses of these mechanisms in a Canadian context. 相似文献
646.
This article investigates the consumer welfare consequences of the recent code‐share agreement between Continental Airlines and Northwest Airlines. We develop a discrete choice model based on individual flight characteristics. This structural model recognizes that consumers (i) may have heterogeneous preferences for flight attributes, and (ii) may face different prices for the same flight. The empirical methodology also deals with the measurement error problem stemming from the absence of consumer‐level data on prices. The estimation results suggest that, whereas the code‐share agreement did not impact consumers significantly on average, it increased the average surplus of connecting passengers but decreased the average surplus of nonstop passengers. Interestingly, the magnitude of our welfare results may be attributed in large part to changes in product characteristics other than prices. 相似文献
647.
Olivier Ethgen Grégoire Jeanblanc Aurore Duguet Derek Misurski Timothy Juday 《Journal of medical economics》2017,20(2):162-170
Objective: To estimate the public health impact of comprehensive hepatitis C virus (HCV) screening and access to all-oral, interferon (IFN)-free direct-acting antivirals (DAAs) in the French baby-boomer population (1945–1965 birth cohorts).Methods: A sequential, multi-cohort, health-state transition model was developed to assess the impact of different hepatitis C screening and treatment strategies on clinical and economic outcomes in the 1945–1965 birth cohorts. Patients newly-diagnosed with chronic HCV were projected each year from 2016 to 2036 under three screening scenarios (70% [low], 75% [intermediate], and 80% [high] HCV awareness in 2036). Healthcare costs and clinical outcomes (number of liver-related deaths, quality-adjusted life-years [QALYs], life-years [LYs] spent in sustained virologic response [SVR] or with decompensated cirrhosis, hepatocellular carcinoma, or liver transplant) were compared among five treatment strategies (no antiviral therapy; IFN?+?ribavirin?+?protease inhibitor for fibrosis stages F2–F4, IFN-based DAAs for stages F2–F4, IFN-free DAAs for stages F2–F4, and IFN-free DAAs for stages F0–F4).Results: Diagnosis of HCV genotype 1 was projected for 4,953, 6,600, and 8,368 individuals in the low, intermediate, and high screening scenarios, respectively. In the intermediate scenario, IFN-free DAAs for stages F0–F4 had a favorable cost-effectiveness profile vs IFN-based or IFN-free treatment strategies for F2–F4 and offered the greatest return on investment (0.899 LYs gained in SVR and 0.933 QALYs per €10,000 invested).Conclusion: Comprehensive HCV screening and access to all-oral, IFN-free DAAs is a cost-effective strategy that could help diminish the upcoming burden of HCV in the French baby-boomer population. 相似文献
648.
The water footprint of energy from biomass: A quantitative assessment and consequences of an increasing share of bio-energy in energy supply 总被引:2,自引:0,他引:2
This paper assesses the water footprint (WF) of different primary energy carriers derived from biomass expressed as the amount of water consumed to produce a unit of energy (m3/GJ). The paper observes large differences among the WFs for specific types of primary bio-energy carriers. The WF depends on crop type, agricultural production system and climate. The WF of average bio-energy carriers grown in the Netherlands is 24 m3/GJ, in the US 58 m3/GJ, in Brazil 61 m3/GJ, and in Zimbabwe 143 m3/GJ. The WF of bio-energy is much larger than the WF of fossil energy. For the fossil energy carriers, the WF increases in the following order: uranium (0.1 m3/GJ), natural gas (0.1 m3/GJ), coal (0.2 m3/GJ), and finally crude oil (1.1 m3/GJ). Renewable energy carriers show large differences in their WF. The WF for wind energy is negligible, for solar thermal energy 0.3 m3/GJ, but for hydropower 22 m3/GJ. Based on the average per capita energy use in western societies (100 GJ/capita/year), a mix from coal, crude oil, natural gas and uranium requires about 35 m3/capita/year. If the same amount of energy is generated through the growth of biomass in a high productive agricultural system, as applied in the Netherlands, the WF is 2420 m3. The WF of biomass is 70 to 400 times larger than the WF of the other primary energy carriers (excluding hydropower). The trend towards larger energy use in combination with an increasing contribution of energy from biomass will enlarge the need for fresh water. This causes competition with other claims, such as water for food. 相似文献
649.
Olivier Butzbach 《Business History》2018,60(5):754-777
AbstractInstitutional analyses of population-level organisational change seem particularly well suited to the task of further incorporating historical concerns into organisational theory, as has been advocated by a growing number of authors, both within business history and management and organisation studies. Such an approach has been applied, in particular, to studies of shifts in organisational forms within the early-twentieth-century US thrift industry. The aim of this article, building on the case study of British building societies during the nineteenth and twentieth centuries, is to uncover both the promises and the limitations of this approach in terms of historical epistemology and methodology, and suggest ways to further consolidate the historical grounding of similar approaches to organisational change. In particular, detailed attention paid to sources and to periodisation may point towards improvements in methodology, both within historical institutionalism and neo-institutionalist history. 相似文献
650.
Decision theory offers a formal approach to decision making, which is often viewed and taught as the rational way to approach managerial decisions. Half a century ago it generated high hopes of capturing and perhaps replacing intuition, and providing the “right” answer in practically all managerial situations. Today it seems fair to say that decision theory has not lived up to these expectations. Behavioral science provides ample evidence that managers fail to follow the dicta of decision theory, even when these are explained to them. As a result, executives often find decision theory frustrating and useless and prefer to rely on their intuition. This paper suggests that this extreme conclusion is unwarranted and calls for a re-appraisal of decision theory. We propose that it should not always be regarded as a mathematical tool that produces the answer; rather, it can be viewed as a framework for a dialog between the decision maker and the decision theorist. In one extreme, the decision theorist studies the problem and provides the “correct’’ answer. But in another, the decision theorist only challenges the decision maker's intuition and logic. In between, a whole gamut of possible dialogs exists, in which decision theory doesn't replace intuition, but supports and refines it. 相似文献