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801.
We consider the non homogeneous gamma process as a degradation model. The hitting time of a deterministic or random level is studied here. We provide its distribution (both cdf and pdf) explicitly in the first case and in the second case when the threshold is exponentially or gamma distributed. The general case for a random threshold can be approximated by considering mixtures of Erlang distributions. Aging properties are also discussed in this article. 相似文献
802.
803.
Despite the widespread deployment of CCTV through most major cities and towns in great Britain, and the importance of surveillance to contemporary debates within the social sciences, there remains relatively little detailed research concerned with the practical use of these technologies in the workplace. In this paper, we examine how personnel in the operation rooms in London Underground use CCTV and related equipment to identify problems and events and to develop a co-ordinated response. In particular, we consider how personnel configure scenes to make sense of and interpret the conduct of the travelling public in organizationally relevant ways, and how they shape the ways in which both passengers and staff see and respond to each others' actions. In addressing how personnel constitute the sense and significance of CCTV images, we reflect on the development of information processing systems which are designed to automatically detect conduct and events. 相似文献
804.
Gollier Christian Weikard Hans-Peter Wesseler Justus 《Journal of Risk and Uncertainty》2004,29(1):5-6
Journal of Risk and Uncertainty - 相似文献
805.
806.
Joppke C 《The British journal of sociology》2004,55(2):237-257
This article discusses a recent retreat of multiculturalism in the liberal state. This retreat has occurred both at the level of theory and policy. With the help of some recent liberal critiques of multiculturalism, the first part maps out some shortcomings of the notion of minority integration through cultural recognition, particularly with respect to immigrants. The second part discusses a retreat from multiculturalism policies in three states that had been prominently committed to them: Australia, the Netherlands, and Britain. This practical retreat of multiculturalism is due to a variety of factors, their importance differing across cases: the chronic lack of public support for multiculturalism policies; inherent deficits and failures of multiculturalism policies, especially in socio-economic respect; and a new assertiveness of the liberal state to impose liberal principles. 相似文献
807.
Rawls (1971, 1993) suggests that a primary goods index should be the basis for interpersonal comparisons in a theory of justice, but it is well known that in general this approach is not compatible with the Pareto principle. This is the indexing impasse. Sen (1985, 1991) argues that this is partly due to the fact that the approach does not take note of the citizens orderings of these bundles of valuable objects. He suggests an intersection approach, which is an incomplete approach to interpersonal comparisons based on judgements that are shared implications of the relevant set of weighting schemes. In this paper, we show that the intersection approach does not provide any solution to the indexing impasse. Unless the individuals have identical preferences, the intersection approach is incompatible with the Pareto principle.
This paper originates from the second chapter of Brun (1998). An earlier version was presented at a conference on Non Welfaristic Issues in Normative Economics at the University of Caen in June 1999, and we should like to thank the participants at the conference for their discussion of the paper. Moreover, we are grateful to Geir B.Asheim, Alexander Cappelen, Kåre P. Hagen, Aanund Hylland, Marc Fleurbaey, John Roemer, Eivind Stensholt, Gaute Torsvik, and an anonymous referee for valuable comments and suggestions. The usual disclaimer applies. 相似文献
808.
809.
Jacques C Ladouceur R 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2003,19(4):427-431
Previous studies have shown that prevalence rates among youths may be inflated due to a problem in understanding the questions of the SOGS-RA and DSM-IV-MR-J. This article reports another reason why prevalence rates of pathological gambling among youths may be inflated. In 1992, Fisher proposed 9 criteria (the DSM-IV-J) for diagnosing pathological gambling among youths, and formulated 12 questions (the Test questions) to identify the presence of these criteria. An analysis of a sample of studies using the DSM-IV-J reveals that some researchers have incorrectly used the 12 Test questions instead of the 9 criteria, which may have led to overestimated prevalence rates among youths. Other measurement issues may also be contributing to the overestimation of problem gambling in young people. The methodological implications of these issues are discussed. 相似文献
810.