Influence diagnostics and outlier tests for semiparametric mixed models

Summary. Semiparametric mixed models are useful in biometric and econometric applications, especially for longitudinal data. Maximum penalized likelihood estimators (MPLEs) have been shown to work well by Zhang and co-workers for both linear coefficients and nonparametric functions. This paper considers the role of influence diagnostics in the MPLE by extending the case deletion and subject deletion analysis of linear models to accommodate the inclusion of a nonparametric component. We focus on influence measures for the fixed effects and provide formulae that are analogous to those for simpler models and readily computable with the MPLE algorithm. We also establish an equivalence between the case or subject deletion model and a mean shift outlier model from which we derive tests for outliers. The influence diagnostics proposed are illustrated through a longitudinal hormone study on progesterone and a simulated example.     

市场结构与企业定价研究

本文首先从分析影响企业定价的市场结构入手 ,研究了处于不同市场结构环境中的企业定价战略 ,继而结合案例分析了不同市场结构的企业定价策略和技巧 ,特别是给出了几种实用的定量定价方法。在研究各种定价策略的基础上 ,提出了一个实用有效的定价程序。此外 ,本文还用博弈论的观点重点分析了寡头垄断市场的定价策略     

人才测评方法探讨

针对目前人才测评中存在的问题，首先界定人才概念；其次分析了影响人才素质高低的要素；再次分析了目前人才测评方法的缺陷；最后提出新的人才测评方法——模糊决策测评法，并通过例证分析说明其可行性，为企业选聘人才提供方法支持。     

Narrating Significant Experience: Reflective Accounts and the Production of (Self) Knowledge

Notwithstanding the rise of evidence-based practice, other tendencieswithin social work scholarship are also discernible. One ofthese is the study of the everyday, routine accomplishment ofpractice, drawing on microsociological methods and techniques.In this article, I apply techniques drawn from narrative anddiscourse analysis to the study of reflective practice accounts,which hold an important place in social work education. In particular,it is relevant to examine the form that reflective accountstake and the rhetorical and narrative devices deployed withinthem to accomplish a competent professional identity. My argumentis not that such accounts of practice are untruthful, ratherI propose that we would do well to move beyond taking texts(and talk) for granted and treating language as merely the mediumfor expressing inner thoughts and feelings. Social work shouldtake seriously the need to explore its modes of representationand to cultivate a more self-conscious approach to the way professionaland client identities are produced in practice.     

高校扩招后物理实验教学改革初探

针对高校扩招后学生人数增加与物理实验用房及设备数量、实验指导教师人数相对减少的矛盾 ,结合物理实验教学实践 ,从教育内容、教学方法、教学手段及考核制度四个方面提出了改革方案。     

浅谈泛读教学法(英文)

泛读是提高学生阅读能力最有效的途径.传统的教学模式不再是最有效的学习模式.所以我们需要探索新的教学方法来改革传统的教学模式.在本文中我提出一些泛读教学法共大家探讨.     

学生为本--高校德育新观念

"学生为本"的观念认为,大学德育的目的是为学生服务的,内容是根据学生生存、发展和健康成长的需要而确定的,德育的过程不仅是教师教育学生的过程,更应该是在教师的组织和引导下,在参与各种教育和教学活动中自我教育和相互教育的过程;在德育评价中,学生不仅是评价中的对象,也应是这一评价的主体.     

如何提高日语语法教学的效果

依据日语基础教学阶段的实际情况,提出应该重视日语语法教学并探讨了语法教学中应该注意的一些问题及方法。     

L'Intervention Sociologique After Twenty-Five Years: Can It Translate into English?

The sociological intervention is a research method developed in France by Alain Touraine in 1976 to explore social movement action. Since then it has undergone significant development, both in terms of the type of social experience explored and the broader research program framing it. Despite its importance, the intervention remains little known and virtually untested within English-language sociology. This article examines key dimensions of this research method through discussing several examples, and argues that the intervention has much to offer English-language sociologists concerned with questions of agency and reflexivity, relationship, narrative and experience.     

刘宋时期的陶渊明

颜延之、范泰和鲍照三位文学家都具有陶渊明情结。颜延之是陶学及陶渊明接受的第一人,《陶征士(?)》是陶学 的奠基之作。鲍照第一次发现了陶渊明的文学,并开辟了文学史上拟陶与和陶之风。