资金时间价值因素对延迟策略选择的影响研究

研究资金时间价值和不同的产品价值构成对延迟策略选择的影响问题. 首先定义了资金 时间价值的概念, 并按产品价值构成划分了产品的类型, 明确了延迟策略的种类. 然后建立了 不同延迟策略下, 在考虑资金时间价值因素和不考虑资金时间价值因素时的产品成本模型. 在 此基础上, 针对不同价值构成的产品, 分析其最优的延迟策略, 说明了资金时间价值因素对延 迟策略选择的影响. 从而为企业更好地利用延迟策略降低成本, 增强竞争力提供了理论基础.     

泰尼埃的结构句法理论

本文从泰尼埃1959年的著作出发,讨论了图式、配价、依存关系等构成结构句法的基本成分,并且从语言信息处理的角度,探讨了泰尼埃结构句法的形式化问题.泰尼埃的"结构句法"是一种面向分析和理解的语言理论,是一种语义驱动的功能句法理论,是一种基于虚图句式的理论,在计算语言学和语言教学等领域得到了广泛应用.     

Assessment of the Gould-Shih procedure for sample size re-estimation

The power of a clinical trial is partly dependent upon its sample size. With continuous data, the sample size needed to attain a desired power is a function of the within-group standard deviation. An estimate of this standard deviation can be obtained during the trial itself based upon interim data; the estimate is then used to re-estimate the sample size. Gould and Shih proposed a method, based on the EM algorithm, which they claim produces a maximum likelihood estimate of the within-group standard deviation while preserving the blind, and that the estimate is quite satisfactory. However, others have claimed that the method can produce non-unique and/or severe underestimates of the true within-group standard deviation. Here the method is thoroughly examined to resolve the conflicting claims and, via simulation, to assess its validity and the properties of its estimates. The results show that the apparent non-uniqueness of the method's estimate is due to an apparently innocuous alteration that Gould and Shih made to the EM algorithm. When this alteration is removed, the method is valid in that it produces the maximum likelihood estimate of the within-group standard deviation (and also of the within-group means). However, the estimate is negatively biased and has a large standard deviation. The simulations show that with a standardized difference of 1 or less, which is typical in most clinical trials, the standard deviation from the combined samples ignoring the groups is a better estimator, despite its obvious positive bias.     

From the state to the family or to the market? Consequences of reduced residential eldercare in Sweden

This article analyses the changing roles of the state, family and market in providing care for older people in Sweden, in relation to Scandinavian welfare ideals of universalism and de‐familisation. Since 2000 every fourth residential care bed has disappeared and the increase in homecare services has not compensated for the decline. Instead family care (defined here as help from adult children and other non‐cohabiting family or friends) has increased in all social groups: help by daughters mainly among older people with shorter education and help by sons among those highly educated. Use of privately purchased services has also increased but continues to play a marginal role. Family care remains more common among older people with less education whereas privately purchased services are more common among those with higher education. This dualisation of care challenges universalism, and working‐class daughters continue to be most affected by eldercare cutbacks.     

关于加强硕士研究生入学考试复试工作的若干思考

本文分析了我国研究生招生过程中不重视复试的原因和弊端,并提出了做好研究生招生复试工作的具体措施.     

Un plafond à caissons : les femmes à l’EHESS

The feminization of employment at the École des hautes études en sciences sociales (EHESS) in Paris has fallen off after an early start and it remains low. This is not to be set down so much to the formally discriminating nature of the recruitment examination (concours) as to competition, the accumulation of social capital and the methods for producing job applications. The initial feminization owed much to long inhouse careers, as women were recruited without sitting for an examination but into subordinate positions from which they could move upwards. This trend came to a halt as this channel of recruitment was shut down and a more elitist, relational and competitive one was opened that leads fewer women to enter job applications. The situation is not a stalemate however. A group of women professors has managed to place the gender question on the agenda and this seems to have given a (weak) boost to feminization.     

La barrière et le plafond de vitrail. Analyser les carrières féminines dans les organisations religieuses

Research conducted mainly in the United States and France on how ordination works like a barrier to the feminization of religious staffs in various Christian and Jewish organizations has brought to light factors for distinguishing several cases: women either gain formal access to religious offices, or informally exercise religious duties, or are barred from religious offices. The second part of this article examines the level in these organizations where this barrier has been lifted, in particular the dissymmetries between men's and women's careers. Emphasis is laid on comparisons with other professions, since similar processes operate underneath the religious sphere's apparent differences, as reflected by the phrase “stained-glass ceiling”.     

Playing work,or gamification as stultification

ABSTRACT

The contrast between work and play as activities collapses if play is seen, following anthropologist Thomas Malaby, as a disposition towards the indeterminate. Once play is positioned as a state of mind, activities that constitute work need not be disjunct from playful behavior. Yet for most workers, work is rarely if ever playful, and attempts to import play behavior into the workplace (‘gamification’) do not result in greater playfulness. Part of this problem results from specific aesthetic values for games having dominated both work and play. As Roger Caillois warned half a century ago, sport-like values have increasingly saturated the culture of the overdeveloped world. Meanwhile, gamification processes have only been able to export task-focussed reward structures from the domain of play – practices that descend from Dungeons & Dragons, but that have been denuded of their playful qualities. In parallel to the gamification of work has been the gamification of games, namely an increasing emphasis on tasks to structure video game play (e.g., achievements), and thus make them more compelling yet less playful. In so much as this entails forcing particular patterns of understanding onto both players and workers, this makes gamification a parallel to Jacques Rancière's stultification in education: a binding of wills instead of an emancipation. If we want a world where work could be more playful, we must begin by breaking the cultural dominance of sport-like and task-like aesthetics of play, and endeavour to overcome the underlying fears that prevent work from being played.     

Disembodied politics: commitment and formal distance in Rancière*

Abstract

In light of the theme and concerns of the present collection of essays, we may ask whether ‘distance in general’, and ‘critical distance in particular’ (Fredric Jameson), has truly disappeared with postmodernity. Proposing an immediate and interruptive political engagement with local issues, Jacques Rancière’s articulation of political mobilisation does seem to confirm this claim. Upon further inspection, however, his emancipatory politics repeat the same mistake of valuing an abstract universal at the expense of a concrete particular, however paradoxical this may seem at first sight. The present article develops this thesis in three moments. On the first hand, it highlights Rancière’s notion of conflict as being institutive of politics. Secondly, it connects this ‘sensible’, and Rancière’s understanding of politics as being aesthetic, to Kant’s ‘Transcendental Aesthetics’. The French author sees in the leading section of the first Critique the grounding possibility of (I) freeing up time and space within the social realm; (II) the representation of a common political surface that can be reshaped; (III) political equality; (IV) emancipation. The last section shows how this recourse to the transcendental subject in Rancière’s politics follows and embraces a traditional position in the history of philosophy whereby identity is denigrated at the profit of a disembodied universalism.     

Adaptive designs for pivotal trials: discussion points from the PSI Adaptive Design Expert Group

The Committee for Medicinal Products for Human Use (CHMP) is currently preparing a guideline on 'methodological issues in confirmatory clinical trials with flexible design and analysis plan'. PSI (Statisticians in the Pharmaceutical Industry) sponsored a meeting of pharmaceutical statisticians with an interest in the area to share experiences and identify potential opportunities for adaptive designs in late-phase clinical drug development. This article outlines the issues raised, resulting discussions and consensus views reached. Adaptive designs have potential utility in late-phase clinical development. Sample size re-estimation seems to be valuable and widely accepted, but should be made independent of the observed treatment effect where possible. Where unblinding is necessary, careful consideration needs to be given to preserving the integrity of the trial. An area where adaptive designs can be particularly beneficial is to allow dose selection in pivotal trials via adding/dropping treatment arms; for example, combining phase II and III of the drug development program. The more adaptations made during a late-phase clinical trial, the less likely that the clinical trial would be considered as a confirmatory trial. In all cases it would be advisable to consult with regulatory agencies at the protocol design stage. All involved should remain open to scientifically valid opportunities to improve drug development.