基于ASP.NET技术的VB网络课程学习平台的设计

介绍利用ASP．NET技术来构建一个VB网络课程学习平台,以及建立VB网络课程学习平台的必要性、设计思想、界面与导航设计、功能设计和维护。该学习平台具有多媒体授课系统、协作学习系统、辅助教学系统、在线调查系统和管理系统等功能。     

课程VC6多媒体课件的制作简介

本文介绍了基于网络的多媒体课件的应用．简要介绍了Authorware，并以课程VC6多媒体课件的制作为例，介绍了多媒体课件的制作过程。     

多媒体网络舆情衰退期形成的评估指标体系构建研究

[目的/意义]对多媒体网络舆情是否进入衰退期进行评估,丰富多媒体网络舆情相关研究。[方法/过程]通过文献调研法构建多媒体网络舆情衰退期形成的评估指标体系,采集案例数据并利用BP神经网络对构建的指标体系进行评估。[结果/结论]文章构建的多媒体网络舆情衰退期形成的评估指标体系具有一定的可行性和实用性,能够对多媒体网络舆情是否进入衰退期进行有效评估。     

开放式计算机网络课程教学模式研究

开放式网络教学模式采用多媒体和网络通信技术结合,创造一个开放的数字化学习平台,从根本上改变了传统教学模式。重点探讨了在计算机网络课程中构建开放式的网络教学平台,通过网络化教学与课堂教学有机结合,培养学生的信息素养、创新精神和综合能力,使教学水平迈上一个新台阶。     

高职院校网上模拟法庭建设初探

随着计算机技术、网络技术、多媒体技术以及现代通信技术的发展,高职院校都相继不同程度地在网络上建立了各专业实践课程操作平台。但是在法学教育方面,利用网络进行课程实践受各种因素影响,存在着不足。本文主要针对当前高职院校法学实践课开展情况的现状,阐述利用网络构建模拟法庭的设计方案和实现技术。     

网络环境下的大学语文教学

运用多媒体和网络技术开展大学语文教学,体现了大学语文课程的信息化进程,在网络环境下,及时抓住现代信息技术发展带来的契机,构建新的大学语文教学模式已成为当前高校的一个重要任务。本文通过分析网络环境下的大学语文教学模式,为大学语文教学模式的转型提出了有效的策略。     

大学英语视听说网络多媒体教学的语用能力培养研究

现代大学英语教学走入了一个以网络多媒体为主要辅助工具的阶段,而视听说课堂和网络多媒体的关系尤为紧密。鉴于视听说课程的多媒体教学目前还存在很多问题,本文着重探讨该如何最大限度地发挥网络多媒体在视听说教学上的作用。     

网络学习环境下的日语教学实践

根据网络学习环境下的日语教学现状和实践,笔者提出从事现代远程教育的教师既要积极大胆的开发适应教育大众化、终身化的日语网络课程和多媒体学习软件,又要利用网络媒体的组合,初步构建起以学生为主体、以语言技能训练为主要内容的日语教学模式。     

模拟电子技术基础网络多媒体课件的制作

在网络课程中,制作网络多媒体课件是一个系统性的工程,因为它集不同学科、不同理论、不同技术于一身。本文主要以模拟电技术课程为实例,论述了模拟电子技术基础网络多媒体课件制作的要求、制作原则和方法,并进行了具体课件的设计。     

大学英语视听说网络多媒体教学的语用能力培养研究

现代大学英语教学走入了一个以网络多媒体为主要辅助工具的阶段,而视听说课堂和网络多媒体的关系尤为紧密。鉴于视听说课程的多媒体教学目前还存在很多问题,本文着重探讨该如何最大限度地发挥网络多媒体在视听说教学上的作用。     

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.     

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.     

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.     

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.     

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.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

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.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence