对高校团干意识培养的认识与把握

高校团干的素质现状与党和国家对高校共青团工作的要求仍有一定距离,这呼唤高校团干意识的培养。与团干共性相融,又向高校团干个性倾斜的高校团干意识的重要组成应包括:强烈的责任意识;自觉的学习意识;主动的服务意识;积极的创新意识;务实的实践意识。应着眼于高校团干自身的努力;把好高校团干队伍的入口;做好高校团干队伍的培训;严把高校团干队伍的考核;给予工作上的信任、政治上的关心、生活上的照顾;以从内部和外部共同推动高校团干意识的培养与内化。     

论脱化

夫脱化之法 ,其为义也大矣 ,自来诗家造语 ,率以祖述为常 ,虽有剽窃偷盗之讥 ,不减引古取旧之用。在于古人 ,既已心知其实 ;抑于今世 ,则或闻听而骇。是以今兹所论也 ,虽托昔贤之为说 ,殆犹重发此秘于天日乎 ?顾脱化之为义 ,向有牵缠 ,故入作之为要 ,略需分理 ;而唯辨于祖述之必存 ,则尤进乎语汇之先在矣。至若脱化之为法 ,乃在祖、作之同异 ,与夫翻新之变化 ,且以语工字简为尊尚 ,而视融化无迹为极至也。     

The two-sample -test with a known ratio of variances

We consider the two-sample t-test where error variances are unknown but with known relationships between them. This situation arises, for example, when two measuring instruments average different number of replicates to report the response. In particular we compare our procedure with the usual Satterthwaite approximation in the two sample t-test with variances unequal. Our procedure uses the knowledge of a known ratio of variances while the Satterthwaite approximation assumes only that the two variances are unequal. Simulations show that our procedure has both better size and better power than the Satterthwaite approximation. Finally, we consider an extension of our results to the General Linear Model.     

Some robust design strategies for percentile estimation in binary response models

For the problem of percentile estimation of a quantal response curve, the authors determine multiobjective designs which are robust with respect to misspecifications of the model assumptions. They propose a maximin approach based on efficiencies which leads to designs that are simultaneously efficient with respect to various choices of link functions and parameter regions. Furthermore, the authors deal with the problems of designing model and percentile robust experiments. They give various examples of such designs, which are calculated numerically.     

多元广义压缩最小二乘估计

引进了多元线性模型中回归系数β＝Ｖｅｃ（Ｂ）的广义压缩最小二乘估计β（Ａ），讨论了它的约方误差与均方残差的性质，指出了根据均方误差准则选取Ａ值的主要缺陷，采用了一种选取Ａ值的新准则Ｑ（ｃ），它包含均方误差准则和最小二乘准则作为特例，并从理论上证明了Ｑ（ｃ）准则的优良性．     

共青团对新时期高校学生社团的再认识与管理

作为高校团工在新条件下的重要载体,团组织须充分重新认识高校学生社团的积极作用:有利于提高思想、科学、文化素质与实践创新能力,促进学生的广泛参与、培养合作意识和社会适应能力,建设高品位校园文化;同时,对其数量类型、管理、活动、互补、指导等发展欠缺问题,也应有清醒的意识与足够的重视;才能在管理上确立正确引导、自主活动、统筹管理、协调发展的基本原则,明确如下基本工作思路:完善机制、提高活动质量与社团领导者的素质、协调与第一课堂的关系、以评促进的严格考核。     

Impact of Value‐Added Service Features in e‐Retailing Processes: An Econometric Analysis of Web Site Functions

We examine the impact of three classes of Web site functions (foundational, customer‐centered, and value‐added) upon e‐retailer performance. Using secondary panel data for 2007–2009 on operating characteristics of over 600 e‐retailers, our econometric analysis finds that only the value‐added service functions are positively associated with changes in e‐retail sales revenues across time. We also observe a decreasing marginal impact of deploying additional value‐added service features. To account for possible alternate explanations, we control for firm‐ and time‐specific fixed effects, merchant types, merchandise categories, and order fulfillment strategies. By further decomposing e‐retail sales revenues into Web site traffic, conversion rate, and average order value, we find that Web site functions affect e‐retail sales revenues mainly through their impact on Web site traffic. Our investigation demonstrates the empirical research usefulness of the Voss conceptual e‐service sand cone model. Our results identify for managers where to focus ongoing e‐retailing system development efforts, yet suggest that focusing too many retailing capabilities on exploratory and experimental value‐added service features may backfire, potentially leading to worsening e‐retailer performance.     

Likelihood‐based inference for correlated diffusions

The authors address the problem of likelihood‐based inference for correlated diffusions. Such a task presents two issues; the positive definite constraints of the diffusion matrix and the likelihood intractability. The first issue is handled by using the Cholesky factorization on the diffusion matrix. To deal with the likelihood unavailability, a generalization of the data augmentation framework of Roberts and Stramer [Roberts and Stramer (2001) Biometrika 88(3), 603–621] to d‐dimensional correlated diffusions, including multivariate stochastic volatility models, is given. The methodology is illustrated through simulated and real data sets. The Canadian Journal of Statistics 39: 52–72; 2011 © 2011 Statistical Society of Canada     

文化对广告言语的制约

本文从广告言语是文化的一个组成部分谈起 ,指出文化对广告言语有巨大的制约作用 ,并且从物质文化、制度文化、心理文化三个方面详细论述了文化对广告言语的制约作用