Teaching collaborative skills with a group leader computer tutor

This paper discusses how a group leader computer tutor may aid students in learning collaborative skills in a co-operative learning environment. However, students need to learn collaborative skills and practice using them. The group leader computer tutor discussed in this paper is designed on the principles of co-operative learning, intelligent tutoring systems and computer-supported collaborative work within an intelligent collaborative learning system (ICLS). The group leader aims to facilitate group work on the task level and to teach students how to use collaborative skills in the discussion level as students work on networked computers in the Jigsaw method of co-operative learning. The ICLS and its group leader were used by two classes at a liberal arts university. Qualitative research shows that the students' co-operative attitudes changed and academic achievement improved from pre- to post-treatment. Students, especially, used the communication skill of openness in comment type discussions. The students enjoyed working collaboratively through the ICLS and their teachers thought that the experience was valuable for them.     

试论高校干部考核指标体系的正确使用

提出了考核高等院校中层管理干部的基本原则,构建了干部考核的指标体系,论述了考核体系的正确使用方法.     

现阶段我国失业问题加剧的原因分析

人口增长对经济发展的持续的压力、经济发展过程中的结构性问题、体制转轨过程中机制转换和竞争加剧以及我国的高劳动参与率等是现阶段我国失业加剧的主要原因。     

Schlieren Visualization of Marangoni Effect in Gas-Liquid Systems

This paper is focused on the Marangoni effect in the gas-liquid mass transfer systems. A series of experiments were conducted to observe Marangoni effect by a laser Schlieren system. Experimental investigations of the occurrence of Marangoni convection were presented. The typical polygonal patterns and even the reaching of chaotic interfacial flow were observed. The visual evidences were discussed and the characteristic time and scale of Marangoni convection were obtained approximately as 0.5 s and 1 mm according to the Schlieren images. From the perspective of hydrodynamic instability, the mechanism of the Marangoni convection was investigated. Though many external factors have influence on the interfacial instability, the local surface-tension gradient is the primary reason for the Marangoni convection. The small-scale interfacial flow increases the surface renewal rate. Consequently, due to the occurrence of the Marangoni effect, the mass transfer rate can be significantly enhanced.     

"协同学"理论在成人教育教学中的应用

协同学理论是著名物理学家哈肯在70年代初研究激光理论时提出的.协同学是研究协同系统在外参量的驱动下和在子系统之间的相互作用下,以自组织的方式在宏观尺度上形成空间、时间或功能有序结构的条件、特点及其演化规律.本文通过对成人教学过程的分析和现代教学要求对比协同学理论,提出了运用协同原理进行教学,帮助学生形成学习的自组织,使其终身受用的一种教学理念及运用方法.     

一类非线性扰动中立型系统的鲁棒镇定

讨论了一类非线性扰动中立型系统的鲁棒镇定问题．在非线性不确定性满足增益有界条件下，首先给出了自由系统鲁棒稳定的一个充分条件，接着通过构造无记忆状态反馈控制器，给出了闭环系统渐近稳定的充分条件．     

比较文明文化学的中国理论体系新建构——读方汉文教授新作《比较文化学新编》

方汉文教授新作《比较文化学新编》是以比较文化学的历史阶段、学科中心范畴与基本观念、学科的研究为学理依据,以八大文明体系、四次文化复兴运动、文化体系的可通约性与可比性以及冲突与融合为研究客体。《新编》是新世纪比较文明文化学理论体系新建构的里程碑。     

汉英语同辈亲属称谓语研究——以伦理观为视角

中国和英语国家存在着巨大的文化差异,伦理观则是其中之一。该文探讨了因为伦理观的不同,导致双方汉英语同辈亲属称谓的不同。因为中国长期存在着重男轻女的思想,所以在中文中,指陈对象"男"的称谓要多于指陈对象"女"的称谓。而正是由于同一指陈对象有两个及两个以上的词汇,故在中国,同一指陈对象产生的不同词汇在人们的心理距离上有远近差别。指陈对象"男"的称谓在人们心理中的距离要近于指陈对象"女"的称谓。而在英语国家,由于长期奉行的男女平等观念,所以在同辈亲属词汇的创造上不存在指陈对象"男"方面的词汇大于指陈对象"女"方面的词汇,当然也不存在同一指陈对象有两个或两个以上的不同词汇及在人们的心理距离有远近的不同。     

梁肇庭客家研究思想述略

梁肇庭是海外研究客家成就最卓著者之一,他成功将美国著名汉学家施坚雅的区域系统理论和西方人类学的族群理论引入客家研究,他的客家研究思想集中体现在其遗著《中国历史上的移民与族群性:客家人、棚民及其邻居》一书中。以作者的译稿为基础,介绍和分析梁肇庭的主要客家研究思想。     

开放环境下信息网络安全问题与对策研究

信息安全是开放的基础。开放环境下引起信息安全问题的主要因素有三个:病毒的危害、硬件故障或缺陷、人为因素或管理制度欠缺。预防措施有操作系统和杀毒软件选用、操作系统和网络设置与监控等;检测方法和处理工具采用的是容错型多启系统盘。