有限元分析课程引入问题式学习(PBL)教学探索

在分析传统教学与问题式学习PBL(problem-based learning)教学各自利弊的基础上, 将PBL教学法引入工科研究生有限元分析课程教学. 通过 改革课程体系和创新评价体系, 整合知识结构, 进行问题设计, 分步具体实施. 优化了教学 内容, 加强了研究生自学能力及科学研究能力的培养, 激发了学生的想象力和创造力. 同时, 对教学内容与课时数的矛盾, 理论教学和工程应用的矛盾以及有限师资和众多学生的矛盾等 PBL教学中难点问题的处理, 作了初步的探索.     

Subject mix and productivity in Portuguese universities

Recent changes in higher education, especially associated with its massification, have led to calls for more accountability and to an increasing need to evaluate universities’ performance. However, comparing universities with different subject mixes poses some significant problems. In this article, a linear mixed-effect model methodology allowing for random effects at university level is used to measure the productivity of Portuguese public universities, taking into account their subject composition, for a period of five years (1997–2001). The results show that subject mix is an important factor in explaining the variability in productivity between universities. However, even taking account of subject mix, a lot of inefficiency is found in the system, and a significant variability in productivity among universities exists.     

Measurement of the feedback coefficient by monitoring the power difference at power jump point in self-mixing vibration signal

This paper proposed a new method for measuring the feedback coefficient in the self-mixing interference. In experiment, the value of feedback coefficient is obtained by measuring the power difference at power jump point that based on the self-mixing vibration sensing system. It realized the measurement of feedback coefficient in range of 1–7.8 and shows a good agreement with the theoretical derivation and the corresponding simulation. Meanwhile, there is a good fitting result with the determination coefficient of 0.98 and line-width broadening factor of 3.245 respectively, which also realized measurement of feedback coefficient and line-width broadening factor at the same time.     

Nonparametric estimation of education productivity incorporating nondiscretionary inputs with an application to Dutch schools

In this paper we develop a Malmquist productivity index for public sector production characterized by the influence of environmental variables. We extend Johnson and Ruggiero (2011) to the more general case of variable returns to scale to further decompose the Malmquist productivity index into technical, efficiency, scale and environmental change. We apply our model to analyze productivity of Dutch schools using 2002–2007 data. The results indicate that the environment influences the productivity index as well as the technical, efficiency, scale and environmental change components. We see that schools with a moderate classification of environment have the highest productivity numbers. In line with expectations, schools with the worst environment also perform worse and would perform better with an improved environment.     

基于教育基金保险的期权定价

本文基于文献[1]引入一种基于教育年金保险的欧式看涨期权,它赋予合约持有人在约定时间以约定价格购买一份连续支付一定年限的教育年金的权利,本文运用保险精算和期权定价的二叉树方法对其进行的定价,并说明这种合约方便于一些低收入家庭进行教育投资.     

大学物理实验考试改革初探

本简单介绍大学物理实验教学改革中考试的改革，以提高大学物理实验课程的教学效果及学生的学习效果。     

2009—2018年《化学教育》“问题讨论与思考”栏目分析与研究

以 2009—2018 年《化学教育》期刊“问题讨论与思考”栏目的载文为研究对象,采用系统查阅年度总目录与阅读原始文献相结合的方法,从载文的数量、内容、作者、引文等 4 个方面进行统计分析。发现近 10 年《化学教育》“问题讨论与思考”栏目的年均载文量为33篇;研究内容涉及化学知识讨论、教学讨论、实验探究、教材讨论、习题讨论等;载文作者所属地区、机构分布不均衡;研究方法以思辨和化学实验为主;作者之间的合作研究成为一种趋势;引文数量呈现逐渐增多的趋势。     

电子技术实验课改革初探

本文概括介绍了本系在电子技术实验课教学改革方面的一些探索和尝试     

Learning objects and objectives towards automatic learning construction

This paper presents a method that creates instructionally sound learning experiences by means of learning objects. The method uses a mathematical model, distinguishes two kinds of Learning Objects Properties and proceeds in two major steps: first, the Course Creation is transformed into Set Covering under specific requirements derived from Learning Theories and practice; second, the Alternative Learning Sources are selected by using a similarity measure specially defined for this purpose.     

A Raman spectral analysis of the ammonium iodide—dioxane complex

The solid state complex between ammonium iodide and 1,4-dioxane has been found by TGA studies to be a ($\text{1}\text{1}$) adduct rather than a ($\text{1}\text{2}$) adduct as previously formulated. The laser Raman spectra of NH₄I· dioxane and ND₄I· dioxane in the N-H and N-D stretching regions show decreases in frequency compared to NH₄I and ND₄I which are consistent with hydrogen bonding of the N-H · O variety as a means of incorporation of the dioxane into the salt crystal lattice.