当前美国中小学教师评价的特点及其启示

加强教师评价改革是美国以提高学生学业成绩为核心，促进教师素质和专业水平发展的重要举措。本文分析了美国教师评价出现的评价双重目的的统一，个别化督导与评价体系、评价聚集于学生的学习、教师档案袋等特点，由此展开了对我国当前教师评价改革的几点思考。     

沪深股市证券投资组合的实证研究

1996年5月6日至12月6日,我国股市正处于价值回归阶段,股份的信息含量较高,选择这一区间沪深股市各30只股票作样本数据,是迄今为止进行证券投资组合研究的最佳原始资料。若以均值－方差模型为理论基础、以二次规划为研究工具,在上述样本股范围内沪深股市各打出13组有效资产组合,并能勾画出沪深股市各自的有效边界以及由沪深股市有效边界共同构成的“新有效边界”。在此基础上则可对沪深股市有效边界及“新有效边界、的范围和特点、投资的最佳证券组合的变化及其相应折市场选择策略、有效证券组合的市场表面等问题作更深入的探讨。     

VaR约束对借贷资产组合的影响

VaR方法是目前国际上金融风险计量和管理中最有效的方法之一。本文分析了VaR约束在实际中借贷利率不同的情况下的应用,并提出了相应的最优资产配置方法,最后举例给予说明。     

Portfolio Assessment: More Than ABCs and 123s

Demands for educational accountability are being called for at all levels: preschool through graduate school. Standardized tests are being widely utilized, but this measurement is not appropriate for young children. Portfolio assessment is a more promising approach to measure children's growth, development, and achievement. This paper outlines criteria that portfolios must have in order to be effective assessment tools. Methods of gathering information and tips for portfolio development are shared and several examples of children's work samples are included     

基于看跌期权组合价值最大化的银行资产优化模型

银行危机的实质在于资产配置失误,资产优化配置事关银行的生存和发展。本文以银行债权组合价值最大化为目标函数,以组合风险价值VaR为约束条件控制资产组合风险的大小,建立了看跌期权组合价值最大化的银行资产分配模型。本模型主要特色与创新是通过卖出看跌期权的组合价值来客观地反映企业价值影响贷款清偿能力的本质属性。     

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。     

有价证券诈骗罪的几个疑难问题

有价证券诈骗罪是一种常见的金融诈骗犯罪。本文针对有价证券诈骗罪的犯罪对象及使用行为中的几个疑难问题予以探讨,为在司法实践中准确适用本罪提供理论依据。     

一类投资组合模型的模糊两阶段算法

对多目标证券组合投资模型进行了研究，模型以风险损失率作为风险。该模型是一多目标线性优化问题．我们采用模糊折衷算法对模型进行了求解，算例给出了该模型的一个实例的最优解。     

The use of portfolios to foster professionalism: attributes,outcomes, and recommendations

The main objective of this research was to review the characteristics of portfolios and their outcomes for teaching professionalism to undergraduate medical students. A systematic review on the use of portfolios in teaching professionalism to medical students identified 1257 papers. Of these, 11 articles met all inclusion criteria. According to the papers, the use of portfolios for teaching professionalism shows versatility, supports learning strategies and has the potential to be used in different contexts, including for formative and summative purposes. The weaknesses were based on the artificiality of the reflections, deficient instructions, time-consuming processes and preference among students for other teaching methods. Students complained about feeling that the reflection was ‘forced’, and they tended to write based on social conventions rather than reveal their true thoughts. Reflection is a powerful component of the portfolio, but the method by which it is taught could easily ruin its potential to boost professionalism. Requiring reflection did not ensure its achievement; increased understanding by students regarding how and why they were doing it, the clarity of assessment methods and constructive feedback might strengthen the potential for success. A framework was designed to support faculty members in developing and applying portfolios with a clear and broad view of this teaching strategy.