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Environmental markets have several institutional features that provide a new context for the use of auctions and that have not been studied previously. This paper reports on laboratory experiments testing three auction forms—uniform and discriminatory price sealed‐bid auctions and an ascending clock auction. We test the ability of subjects to tacitly or explicitly collude in order to maximize profits. Our main result is that the discriminatory and uniform price auctions produce greater revenues than the clock auction, both with and without explicit communication. The clock appears to facilitate successful collusion, both because of its sequential structure and because it allows bidders to focus on one dimension of cooperation (quantity) rather than two (price and quantity).© 2009 by the Association for Public Policy Analysis and Management.  相似文献   
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This model evaluates the use of dental stone casts derived from maxillary tissues and from the internal aspects of maxillary dentures for edentulous postmortem identification. Tissue topography of the total cast and of rugae tracings photographed from the casts were evaluated for identification accuracy in twenty-eight trials for each of the two designs. Eight casts were examined in each trial. The trial was designed as matching or nonmatching, and as an equivocal or unequivocal decision by the examiner. Unequivocal decisions with 100% accuracy resulted when the entire dental cast was evaluated. Seventy-nine percent accuracy with equivocation in some trials resulted when only rugae tracings from the casts were evaluated. This investigation supported use of stone casts derived from the internal anatomy of maxillary dentures for forensic science identification when cast topography in toto was considered.  相似文献   
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Abstract: The administrative discretion of civil servants is a central topic in public administration literature. Some authors view it as necessary and beneficial, while other researchers see it is a source of widespread abuse. However, reforms inspired by the “new public management” taking place in a number of public administrations are promoting greater managerial flexibility. In parallel with these modernization initiatives directed at administration, scandals continue to shake politico‐administrative life, and ethical issues are increasingly at the heart of public action. It is within this context that we question the relationship between an increasing managerial discretion and the development of an ethics infrastructure. Which areas are at risk? Can ethics help overcome the potential abuses of power? How do managers perceive their ability to be flexible and the role of ethics in their work? How do you implement the ethical requirements developed in various standards documents? These are the principal themes addressed in this article that presents the findings of a qualitative case study conducted in a Quebec ministry in 2008–2009. Our results show that, contrary to what promoters of the new public management claim, managers have little, if any, discretionary power in matters of financial management. Their actions and decisions are strictly governed by hierarchical control mechanisms or a computer system. This explains in part why taking ownership of general principles and establishing an ethics infrastructure remain a formal process.  相似文献   
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The authors report on West European trends in follow-up arrangements of national quality assurance procedures. They argue that external quality assurance ought to adopt a broader conception of quality than is now often the case. Next, the general public ought to have a guarantee that external quality assurance is valid (through meta-evaluation) and has consequences (through follow-up arrangements). Follow-up currently is not well developed in many European countries in a formal sense, but is receiving more attention as external quality assurance is maturing. Finally, the authors link national quality assurance to the European dimension; an international network could fulfil important functions in making quality assurance transparent and credible across Europe. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   
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