学生网上评教评价模型的建构

如何提供一种公平有效的计算方法对教师课程评分进行科学合理排序,对于教师课堂教学的公正评价具有重要意义。本模型利用概率统计、仿真、修正抛弃和分级加权打分的方法得到了较为理想的多目标优化模型,并运用MATLAB7.0编程计算得出对教师课堂教学质量的公正排序。     

人工神经网络在课堂教学质量评价体系中的应用

利用人工神经网络方法建立高等学校教师课堂教学质量评价模型,并在Matlab系统内得以实现。实验表明,人工神经网络用于教师课堂教学质量评价中完全可行。     

提高高校课堂教学质量的调查与思考

课堂教学质量评价有不同的评价主体,其中学生和教师同行评价是最主要的两个主体。通过对两个评价主体课堂教学质量评价结果的比较,探讨提高课堂教学质量的途径。     

电子信息工程类专业课堂教学质量评价方法研究

教师课堂教学质量评价是高校教学管理的重要环节。科学反映课堂教学效果有利于教师课后教学反思,进一步改善教学质量。采用层次分析法,通过建立数学模型,构建了课堂教学质量评价指标体系,从而实现了对课堂教学质量的量化评价。     

一种教学质量评价新方法

本文采用信息熵理论确定评价指标的权重,使其具有客观性,用模糊综合评价方法进行教师的课堂教学质量评价。将专家对教师课堂教学质量评价与学生对教师课堂教学质量评价相结合,构成一个决策表。     

教师课堂教学质量评价若干问题探讨

课堂教学质量是学校教育的生命线。良好的课堂教学质量评价可以推动学校的教学管理和教学改革,提高课堂教学质量和教师的教学水平,最终培养出高素质的合格人才。但是目前的教师课堂教学质量评价从评价主体、评价方式和评价功能上都存在一定问题。本文提倡发展性教师课堂教学质量评价,注重发挥教师自评和自我反思的作用;积极发挥质的评价和开放性评价的作用;弱化评价的鉴定和奖惩功能,充分发挥评价的促进和发展功能。     

高校教师课堂教学质量评估方法探讨

通过分析高校学生在对教师课堂教学质量评估中人为偶然因素引起的偏差，提出了消除常见人为偶然因素的原始评估数据采集方法和数据处理方法，得出了可以较科学、客观、公正地反映教师课堂教学的实际水平的教师个人课堂教学质量实际评估结果，所提出的教师课堂教学质量评估方法简洁明了、操作方便，实用价值高。     

课堂教学质量评价方法的探索与实践

教学质量评价是对教学质量进行过程控制的重要手段.本文以宁波广播电视大学东校区为例,阐释了构建多元化教学质量评价体系的思路,探讨了从全方位、多角度、多层次探索课堂教学质量评价的方法,并运用因子分析法,结合SPSS统计软件,对教学质量评价数据进行综合分析,得出了具有一定参考价值的计算分析结果.以此为依据,对在校授课教师的教学质量进行客观评价.     

农村中学课堂教学质量的评价研究

农村中学课堂教学质量的评价是农村学校对教师工作绩效考核的一个重要手段。建立了农村中学课堂教学质量评价指标体系,同时运用理想解法为农村中学课堂教学质量的评价提供优选,为农村中学评价课堂教学质量提供一个简便易行的操作方案。     

以课堂教学评价量表实施促教师课堂教学评价能力提升——以中医学院附中课堂教学评价量表实施为例

课堂教学评价不仅要对一堂课的是与否、好与坏作出判断,更重要的是对课堂教学进行价值引导。本文从创建课堂教学评价新体系,聚焦质量;形成课堂教学评价新理念,促进改变;注重课堂教学评价的实施,成长自我三个方面结合学校实际论述了我校课堂教学评价表的主要内容,实施过程和设计理念,旨在通过科学、合理的实施课堂教学评价表来提高课堂教学的质量,促进我校教师的专业发展,进而提升所有教师的教学评价能力。     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

To serve and promote science development via innovation

CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing.     

Tracing the origin and early radiation of birds——Paleornithologist ZHOU Zhonghe

With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants."     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

The Information Environment and Universal Service

This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.