非负定方差阵下的证券组合投资决策模型研究

在用于度量投资风险的方差阵为非负定时，本文建立并研究了允许卖空与不允许卖空情形下证券组合投资决策模型，同时给出了计算最优投资比例系数的方法。     

Dress rehearsal: a Bourdieusian analysis of body work in career portfolio programs

This article examines how career portfolio programs at two secondary schools establish corporeal regimes. Both programs require students to compose portfolios that plot their trajectories through school and into paid work. Prior to graduation, students defend their portfolios before panels of educators and businesspeople. Employing the Bourdieusian concepts of capital and habitus, this article investigates how these programs set up systems that value certain kinds of bodies. Further, it examines how students negotiate these systems and display different kinds of bodies in different kinds of ways. Ultimately, it is argued these disparate bodily performances are read by authorities as indicators of the types of paths students are travelling or should travel into the future.     

基于风险分散化的资产组合分析模型

本文运用概率论与线性代数方法相结合以数学模型来对风险投资进行定量表达,建立了资产组合的分析模型,解决在投资活动中人与风险的抗争关系,以及风险、收益与组合之间的矛盾同一关系。在保持一定收益的前提下,通过资产组合,对风险进行分散化,降低风险,最后给了例证。     

化学档案袋评价的实施及案例

档案袋评价是化学课程标准倡导的评价方式之一。本文简述了初中化学教学中实施档案袋评价对学生发展的意义,阐述了化学档案袋评价的实施过程及其注意点,并提供了实践案例。     

发挥电子档案袋在高校英语教育中的作用

电子档案袋在学生的学习过程中扮演重要角色,可以显示学生的学习目的、活动、能力、学习成果及其最终发展水平,由高校英语教师牵头,师生,家长和社会配合,尝试创造性地建立：[消息部]、[方法部]、[分享部]、[开放评价]、[学生档案]等不同专项的电子档案袋,积极发挥电子档案袋在英语教育中的作用,促进英语教育改革,使高校英语教育迈出新的步伐。     

英国对华直接投资的制约因素——基于投资诱发要素组合理论

以投资诱发要素组合理论为依据,分析了英国对华直接投资的制约因素,认为我国政府必须采取提高行政效率、加强中英经贸合作等措施,以促进英国对我国的直接投资.     

浅谈档案袋评价在高校教学中的应用

高校教学中传统的评价方式多以量化评价为主,只关注学生的学习结果。这样的评价方式不利于学生综合能力的发展,因此,高校教学中应适当引入质性评价。档案袋评价注重评价的过程性和发展性,在关注学生学习结果的同时也关注学生的学习过程,是比较适合高校教学的一种质性评价方式。     

美国重要癌症基金资助现状分析

本文综合美国主要癌症基金过去7年中对癌症项目的资助情况,从项目的领域分布、项目的数量变化、项目的类型分布、癌症种类情况等多个角度,分析美国癌症基金的资助现状和特点,对了解和把握国外癌症研究方向有借鉴意义,同时为我国癌症基金工作提供有益思路。     

美国教学档案袋评价述评

在美国,教师评价的代表性方式由原来的书面测验、课堂听课发展到教学档案评价.本文着重介绍教学档案的内涵、美国教学档案袋的开发和评价方法方面的经验,并评述教学档案袋评价的优势和不足.     

Documenting professional practice through the use of a professional portfolio

Many early childhood practitioners use pedagogical documentation as an important process that enables children's thinking to be represented in a form that can be readily shared with others (Dahlberg et al., 1999 Dahlberg G Moss P Pence A (1999) Beyond quality in early childhood education and care: postmodern perspectives (London, Falmer Press)  [Google Scholar]). Documentation in the form of a professional portfolio provides a vehicle for reflection and an appreciation of the complexities and ambiguities of professional practice in the human professions. The nursing and teaching professions have also embraced professional portfolios as a means through which accountability to self and to others can be judged. However, it is the fusion of process and product within professional portfolio development that enables those involved in the human professions to examine, reflect on, understand, explain and further develop their professional practice. It is through this interrogation of practice that we can not only gain insight into our capabilities but also the theories, beliefs and values that underpin the wisdom of our professional practices. The process of professional portfolio development can be enriching and empowering. An outline for organizing a professional portfolio is provided.