Comparisons of the Unbiased Ridge Estimation to the Other Estimations

In this article, we employ the method of empirical likelihood to construct confidence intervals of conditional density for a left-truncation model. It is proved that the empirical likelihood ratio admits a limiting chi-square distribution with one degree of freedom when the lifetime observations with multivariate covariates form a stationary α-mixing sequence.     

One-and two-sample sign tests for ranked set sample selective designs

Statistical inference based on a ranked set sample depends very much on the location of the quantified observations. A selective design which determines the location of the quantified observations in a ranked set sample is introduced. The paper investigates the effects of selective designs on one and two sample sign test statistics. The Pitman efficiencies of one- and two sample sign tests are calculated for selective designs and compared with ranked set samples of the same size. If the design quantifies observations at the center points, then the proposed procedure is superior to a ranked set sample of the same size in the sense of Pitman efficiency. Some practical problems are addressed for the two-sample sign test.     

Reinterpreting between-group inequality

We evaluate observed inequality between population groups against a benchmark of the maximum between-group inequality attainable given the number and relative sizes of those groups under examination. Because our measure is normalized by these parameters, drawing comparisons across different settings is less problematic than with conventional inequality decompositions. Moreover, our measure can decline with finer sub-partitioning of population groups. Consequently, the exact manner in which one groups the population acquires greater significance. Survey data from various countries suggest that our approach can provide a complementary perspective on the question of whether (and how much) a particular population breakdown is salient to an assessment of inequality in a country. An erratum to this article can be found at     

Better May be Worse: Some Monotonicity Results and Paradoxes in Discrete Choice Under Uncertainty

It is not unusual in real-life that one has to choose among finitely many alternatives when the merit of each alternative is not perfectly known. Instead of observing the actual utilities of the alternatives at hand, one typically observes more or less precise signals that are positively correlated with these utilities. In addition, the decision-maker may, at some cost or disutility of effort, choose to increase the precision of these signals, for example by way of a careful study or the hiring of expertise. We here develop a model of such decision problems. We begin by showing that a version of the monotone likelihood-ratio property is sufficient, and also essentially necessary, for the optimality of the heuristic decision rule to always choose the alternative with the highest signal. Second, we show that it is not always advantageous to face alternatives with higher utilities, a non-monotonicity result that holds even if the decision-maker optimally chooses the signal precision. We finally establish an operational first-order condition for the optimal precision level in a canonical class of decision-problems, and we show that the optimal precision level may be discontinuous in the precision cost.     

中世纪法国习惯法学评介

中世纪法国习惯法学在法学史中占有重要地位。12～18世纪,习惯法学在法兰西的土地上走过了从形成到深入发展的全部历程。研讨这一时空背景下的法国习惯法学,能够获得启示。     

两司马治史之比较研究

司马迁和司马光是我国历史上的两位伟大的史学家,他们撰写的<史记>和<资治通鉴>对我国史学产生了深远的影响.他们二人处于不同的历史时代,其著作也有明显的不同.从体例上来讲,<史记>为纪传体,<资治通鉴>为编年体.另外他们二人在历史视野、对待史实的情感、思想倾向以及材料的取舍等方向也有较大的区别.     

Siting Praxeology. The Methodological Significance of “Public” in Theories of Social Practices

The concept of “site” is at the center of current debates in theories of social practices as well as in cultural anthropology. It is unclear, however, how to assess the associated methodological assumption that overriding social structures or cultural formations can manifest themselves in sites. The article draws on the conception of social practices and introduces the notion of “publicness” in order to explicate how and why sociality and social structures can be accessed through “siting”. Sites as well as social practices, it is claimed, have to be conceptualized as essentially public and thus principally observable phenomena. This assumption of publicness implicit to both site ontology and theories of social practices is unfolded on the basis of a praxeological reformulation of the paradigm of joint attention elaborated in developmental psychology. To avoid presentist misinterpretations, we then conceptualize sociality as chains of practices across time and space, drawing on the works of Theodore Schatzki, Ludwig Wittgenstein, Anthony Giddens and Bruno Latour. The public carriers of practices (artifacts, symbols, media, bodies) and the translocal structures they establish acquire particular significance in these approaches. In a further step, we present some methodological consequences of the “publicness assumption” and support our arguments by referring to Pierre Bourdieu's study on Distinction.     

If the PRS Experience in Latin America is a Disappointment,What is the Alternative?

This is a reflection inspired by Geske Dijkstra's article ‘The PRSP Approach and the Illusion of Improved Aid Effectiveness: Lessons from Bolivia, Honduras and Nicaragua’ (Development Policy Review 23 (4), July 2005) which questions the usefulness of the PRS approach in Latin America, building to a considerable degree on studies carried out in the three countries by the Institute of Social Studies (ISS), which Sida financed. ¹ 1 The reports are produced annually and available at http://www.iss.nl/prsp .
     

Return to work still possible after several years as a disability pensioner due to musculoskeletal disorders: a population-based study after new legislation in Sweden permitting "resting disability pension"

Different strategies have been used to stimulate a return to work (RTW) among individuals suffering from long-term ailments. In Sweden a new law on "resting disability pension" permits disability pensioners to go back to work without jeopardising their benefits. In this study different variables related to RTW during 2000 by means of this legislation were identified among disability pensioners with musculoskeletal disorders. Individuals in the study group, when compared to a control group, had more often been disability pensioners for several years, had additional education, estimated their previous job to have been physically strenuous to a lesser degree, were more satisfied with the treatment at the social insurance office and had a more positive self-image. This study shows that it may be meaningful to continue/resume rehabilitation efforts and to try to motivate an individual suffering from musculoskeletal disorders to return to work even after several years as a disability pensioner.     

网站"友情连接"所涉及的法律问题探讨

本文对网站“友情连接”现象进行了剖析 ,对该现象所涉及的多标志、知识价值隐性转移、连带责任、法律的地域作用、键面广告、连接网站性质变异等法律问题进行了分析 ,并提出了相关的制度化建议