趋势与前景:新世纪师范教育发展探寻

新世纪的中国师范教育将在以下方面出现新发展、新变化 :减少办学层次、开放培养体系、完善课程结构、促进一体化教育、提高专业化水平、掌握信息技术、加强高师教师队伍建设     

A dynamic decision model for portfolio investment and assets management

This paper addresses a dynamic portfolio investment problem. It discusses how we can dynamically choose candidate assets, achieve the possible maximum revenue and reduce the risk to the minimum level. The paper generalizes Markowitz's portfolio selection theory and Sharpe's rule for investment decision. An analytical solution is presented to show how an institutional or individual investor can combine Markowitz's portfolio selection theory, generalized Sharpe's rule and Value-at-Risk(VaR) to find candidate assets and optimal level of position sizes for investment (dis-investment). The result shows that the generalized Markowitz's portfolio selection theory and generalized Sharpe's rule improve decision making for investment.     

线切割电参数的合理选择

分析了线切割参数对线切割加工工艺指标的影响,指明了怎样合理选择切割线参数。     

当代中国贫富分化问题的哲学思考--以公民自由权利的生长为视角

在当代中国,市场经济体制的建立带来自由权利的不断扩大,然而由于社会的转型未能保障全体公民平等地扩大其自由权利,而加剧了由市场本身带来的贫富差距.参照西方市场经济发展过程中自由权利与贫富分化的研究,来理解当代中国转型期的实际问题,并试提出解决问题的方向.     

高校招生中“加分降线投档”政策之分析

“享受加分考生名单、录取结果要公示”,是高校招生要实现公开、公平与公正政策的表现之一。从公共政策和理性的视角审视,“加分降线投档”政策是政府为了解决招生过程中出现的特殊群体问题而制定的具体政策,具有公共政策的特质,对教育行动具有导向作用；该政策也是人们充分运用理性的结果,既能体现工具理性,也虑及价值平衡问题,给价值理性留有一定空间。     

EBF网络特征映射和恢复及其在鲁棒话者识别中的应用

The performance of speaker verification systems is often compromised under real-world environments. For example, variations in handset characteristics could cause severe performance degradation. This paper presents a novel method to overcome this problem by using a non-linear handset mapper. Under this method, a mapper is constructed by training an elliptical basis function network using distorted speech features as inputs and the corresponding clean features as the desired outputs. During feature recuperation, clean features are recovered by feeding the distorted features to the feature mapper. The recovered features are then presented to a speaker model as if they were derived from clean speech. Experimental evaluations based on 258 speakers of the TIMIT and NTIMIT corpuses suggest that the feature mappers improve the verification performance remarkably.     

再论高等职业教育是一种类型

本文从世界高等教育发展史、我国高等职业教育发展史和我国学位制度的演变说明高等职业教育是一种类型,并对今后我国职业教育的发展从认识上、制度上、具体办学上相应提出了建议。     

"3+文科综合或理科综合"高考方案的合理性因素分析

本文利用学生的各科会考成绩,科目包括语文、数学、英语、物理、化学、生物、政治、历史和地理共计9门课程,使用因素分析方法对“3 文科综合或理科综合”高考方案的合理性进行了分析。结果表明9门课程可以科学地分为三类:“文科综合”包括历史、政治、地理三门课程;“理科综合”包括化学、物理、生物三门课程;另外三门课程数学、英语、语文可以看作无论是文科学生还是理科学生都需要学习和考试的课程。这恰好与“3 文科综合或理科综合”的高考方案相对应,本文的研究结果从一个侧面说明了我国高考制度改革的科学性。     

Pre-service and In-service Secondary School Teachers’ Knowledge about Attention-deficit Hyperactivity Disorder (ADHD) and Attitudes toward Students with ADHD

This article reports on a mixed-method inquiry into pre-service and in-service secondary school teachers’ knowledge about Attention-deficit Hyperactivity Disorder (ADHD) and attitudes toward students with this disorder in Hong Kong. The inquiry revealed no differences between pre-service and in-service secondary school teachers concerning their knowledge of ADHD and attitudes toward students with ADHD. It also identified possible sources of participants’ knowledge and a variety of factors underlying their attitudes toward students with ADHD including sociocultural beliefs and working conditions. The findings call for teacher educators to develop better education programmes to support both pre-service and in-service teachers in undertaking the challenging task of teaching students with ADHD.     

Starting and Sustaining an Undergraduate Research Program: The SURIEM Experience at Michigan State University

Abstract

Mentoring undergraduate students in research is both rewarding and challenging. In this paper we present how we established a summer Research Experience for Undergraduates (REU) program in the mathematical sciences at Michigan State University. A goal of our REU is to include students who are at an early stage of their study of mathematics. We share our experiences in recruiting students, designing research projects, and mentoring our participants. We discuss the challenges we faced and the solutions we found while working with a diverse group of undergraduate students from across the nation.