改革物理实验教学 提高学生综合素质

针对物理实验教学中存的问题,对实验教学的管理模式、教学内容、教学方法进行了综合改革,从而激发了学生的创造能力和提高了学和珠综合素质。     

基于概率图模型的科研文献主题演化研究

学术文献的主题分析对于研究者进行思路整理及发现研究主题非常重要.通过进一步的分析,能够理解主题如何发展变化,以及如何影响研究者的行为等等.探索了基于概率图模型的科研文献主题演化问题,特别分析了主题随时间的相互影响问题,提出了基于模块化网络的方法研究主题之间的相互关系,从而理解其相互影响.首先,利用主题模型获取时间文本的主题及其强度曲线,然后利用时间序列的逐段线性表示方法去除序列中的噪音,从而有效反映趋势信息,使得利用模块化网络能够更加准确地反映主题的影响关系,实验结果及其相关分析证明了方法的有效性.     

Systematic Dynamic Effects in Multiple Impact Pairs and Distributed Factors

In this paper in general the dynamic effects are considered and described, caused by different stand-ing waves in discrete and distributed systems with impacts and other strongly positional non-linear fac-tors, introduction of which in the models of me-chanical objects is dictated by the necessity to con-sider processes, accompanied with impacts of me-chanical subsystems of different nature.     

The challenge of fluid flow

You look up at the sky, and see a lovely cloud; you look down, and may see lovely ripples on a rivulet (or river). On a hot summer afternoon you see dancing dust devils; on a cold winter evening you can see smoke rising lazily from achulah, and hang up there as if it has given up. You peer at a telescope, and see intense supersonic jets, or vast whirling galaxies; you measure in a wind tunnel, and sense powerful tornadoes behind an aircraft wing. The universe is full of fluid that flows in crazy, beautiful or fearsome ways. In our machines and in the lab, as in terrestrial nature, one sees this amazing diversity in the flow of such a simple liquid like water or a simple gas like air. What is it that makes fluid flows so rich, so complex-some times so highly ordered that their patterns can adorn a saree border, sometimes so chaotic as to defy analysis? Do thesame laws governall that extraordinary variety? We begin with a picture gallery of a number of visible or visualized flows, and consider which ones we understand and which ones we do not, which ones we can compute and which ones we cannot; and it will be argued that behind those all-too-common but lovely flows lie deep problems in physics and mathematics that still remain mysteries.     

论教学理念的认识与计算机基础课程教学模式的改革

基于对计算机基础教学理念的认识和计算机教学模式的改革的一些看法和认识,认为应从教师专业化角度去看待教育过程,通过对目前计算机基础教学过程中存在问题的分析,特别是对重视课堂教学而忽视实践教学和项目设计训练的现状,探讨启发式教学和研究性学习的教学模式应用,通过改变考核方式作为惟一的学业评价手段,突出专题讨论作为一种比考试更重要的学生学业水平的鉴定形式.