A multiple model discrimination procedure

The case of selecting between a set of fixed models is considered. The true model is assumed to be contained in the set of proposed models and errors are taken to be normally distributed. A sequential procedure which yeilds probabilities of incorrect selections is proposed. The procedure is shown to have optimal properties and is extended to the estimated model case by a bootstrap procedure.     

国际金融危机中的冷战思维分析

主流价值观的差异决定社会治理模式不同,而经济管理手段是由社会治理模式来决定的。冷战思维是2008年国际金融危机的重要成因之一,它继承着资本主义同盟的冷战任务、在全球扩展资本主义意识形态的民主价值观、遏制和消灭社会主义的发展模式。冷战思维在两个层次影响国际金融:第一,对异质发展模式的敌视,加剧了国际政治经济运行的动荡;第二,对社会进行新自由主义的治理与经济管理,致使金融危机难以避免。     

Behavior Management of Client Contacts in a Real Estate Brokerage

A Project intended to increase client-contacting behavior on the part of 16 real-estate sales persons was described. Both contacts with prospective (initials) and with established clients (followups) were targeted for change. During a 20-week baseline, agent self-reports were used as a basis for posting weekly charts of contact behavior together with measured sales and listing performances. A conjunctive token-reinforcement procedure involving both contact behaviors was introduced during a 15 week intervention phase. For all agents as a group, a sustained increase in both behaviors was noted during this phase. Additional analyses revealed, however, that for low baseline performers, the intervention effect was only short-lived. During a subsequent three-week prewithdrawal stage, the increased behavion from the previous phase reverted nearly to baseline levels, despite the continued intervention, in response to instructions that program withdrawal was imminent. Contact behaviors further declined to below baseline levels during the following 4-week withdrawal stage when both posting and token procedures were actually discontinued. A tenninal 6 week reversal phase was marked by a nearly full recovery for all agents of asymptotic intervention levels of contact behavior under a reversed conjunctive token reinforcement schedule. Evidence indicating a correlation between changes in contact behaviors and changes in sales was presented. Also, other company benefits presumably derived from the program were described. Finally, the outcomes of this study were discussed in terms of several important validity concerns.     

“厨房情结”：为什么让女性欲罢不能——评吉本芭娜娜的《厨房》与《满月》

在吉本芭娜娜的《厨房》和续集《满月》中，厨房不仅成为樱井美影摆脱孤独的寄托，更成为她维持生活的依靠。这种欲罢不能的厨房情结并非现代女性袁层生活的映照，而与女性深层次的传统继承有关，与女性的生理本能和心理需求有关。它是现代女性与社会妥协调和的产物。     

Everyday shame

This article explores aspects of the everyday through a consideration of shame. Drawing on and extending Bourdieu’s notion of the habitus, notably in relationship to Silvan Tomkins’ affect theory, and to Bourdieu’s predecessor Marcel Mauss, the paper argues for the positivity of everyday shame. The very different although complementary privileging of the physiological in Tomkins and in Mauss allows for a radical rearticulation and understanding of the habitus and of everyday life. In this article, their understandings serve to provide a model that more fully comprehends the productive nature of shame within postcolonial societies.     

The maximum likelihood estimators of the parameters of the gamma distribution are always positively biased

Several authors have conjectured, on the basis of their numerical work, that the maximum likelihood estimators of the shape and scale parameters of the Gamma distribution are positively biased. It is proved that their conjecture is always true.     

一类二阶非线性差分方程正解的存在性

主要利用推广的Riccati变换,建立了一类比较广泛的二阶非线性差分方程正解存在的充分和必要条件.     

DISTRIBUTION-FREE TESTS BASED ON SUB-SAMPLE EXTREMA FOR TESTING AGAINST POSITIVE DEPENDENCE

A class of distribution-free tests based on U-statistics has been proposed for testing the null hypothesis of independence against positive quadrant dependence. The tests are based on U-statistics and the Kendall's-tau test belongs to this class.     

纳米技术的正负效应及社会控制初探

纳米技术是一门崭新的综合性科学技术,将对21世纪经济、社会和国防产生重大影响,很可能成为21世纪的主导技术。纳米技术的发展既能带来正效应,也能带来负效应,目前,社会对纳米技术的负面效应认识不够。只有对纳米技术实施有效的社会控制,才能引导它向健康方向发展。     

锂离子二次电池正极材料尖晶石型LiMn_2O_4的研究进展

近年来,锂离子电池因其优异的特性,发展十分迅速。锂离子电池的优异性能与电池的材料选择,材料的制备工艺等密切相关。正极材料LiMn2O4是近几年锂离子电池研究的热点,但其在循环过程中的容量衰减是制约锂离子电池商品化的关键。本文介绍了不同正极材料的结构、电化学性能、研究现状,侧重于阐述控制锂离子电池循环过程中可逆嵌锂容量和稳定性的嵌锂电极材料的结构性质。