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1.
[目的/意义]从建构主义视角出发,综述国外“搜索即学习”领域中“将信息搜索视为学习过程”的研究成果,为今后探索用户网络信息搜索中的知识变化主题提供理论基础和方法论支持。[方法/过程]围绕用户网络信息搜索中用户领域知识结构的变化、用户系统知识结构的变化、用户知识变化的搜索实验任务设计、面向用户学习的信息检索系统优化设计4个分主题进行分析和总结。[结果/结论]第一,意义建构理论和建构主义学习理论可以有效地揭示用户信息搜索过程中的学习机制。第二,用户网络信息搜索中的学习同时包括领域知识学习和系统知识学习两部分,但是已有的研究却缺乏对这两个组成部分交互机制的探索。第三,已有的研究设计了面向用户学习的检索算法,并优化或开发了相应的搜索系统。  相似文献   

2.
介绍了如何基于人机工程学的理念设计自主学习网络平台,阐述了用户需求分析、用户界面、用户至上、人机交互等观点,对平台内容基于人机工程学的展现手段和方式作了具体的描述。  相似文献   

3.
阮冬生  李森 《科教文汇》2009,(35):81-82
教育游戏的设计开发是个系统化工程,而教育游戏的交互界面设计是这个工程的一个重要环节。其好坏直接影响着学习者的游戏化学习体验,是教育游戏能否发挥其教育功能的重要内容。文章从用户的角度,以相关的理论为基础,探讨了以用户为设计中心的RPG类型的教育游戏界面设计。  相似文献   

4.
孙敏 《内江科技》2007,28(10):86-86,127
交互设计应该着重关注使用者的行为研究,从目标导向的角度来思考什么样的沟通方式和环境才是用户所乐于接受的.同时需要进行严格的调查和研究,洞察用户的目标、行为和心理习惯,并提供给开发人员可以实现的方案.  相似文献   

5.
吴鸣  徐伟 《情报探索》2009,(10):88-90
从网络教学课件设计目标、开发环境及其几个主要交互模块的功能实现中.阐述了实现信息检索交互式网络教学平台的设计方法及思想。  相似文献   

6.
分析现有关联数据可视化技术的缺陷,提出一种以用户为中心的关联数据可视化方案,用户不需要掌握专业的语义网技术、程序开发技能和可视化知识,即可对任意关联数据进行可视化展示。基于Mazumdar视图框架提出通用可视化概念框架,基于用户交互分析设计可视化工作流,基于可视化工作流设计软件架构,并提出软件平台的技术实现方案。  相似文献   

7.
信息系统开发中的需求分析   总被引:3,自引:0,他引:3  
刘玉照  陈萍丽  王莉莉 《情报杂志》2003,22(5):71-72,75
论述了信息系统开发过程中需求分析阶段的七个关键过程:确定系统目标、明确用户需求、形成,用户需求报告、设计系统界面、设计逻辑模型、完成系统需求说明书和形成文档。着重阐述了用户需求报告、系统界面形成的过程,并强调了开发过程中文档的重要性。  相似文献   

8.
目标导向的交互设计方法   总被引:1,自引:0,他引:1  
目标导向的交互设计方法关注用户的目标,在研究产品的实际用户和潜在用户的基础上,定义出具体的原型用户(人物角色persona);使用人物角色作为脚本提纲(scenarios)的主要人物,把人物角色作为定义产品功能、行为和形式的主要工具,在设计过程中遵循行为设计的原理。  相似文献   

9.
为了方便工程设计者快速、简易地建立天线结构优化设计模型,开发了天线结构优化设计可视化建模环境。在这个环境中用户可以通过人机界面交互确定设计的目标系统、约束系统和变量系统。开发过程中涉及的一些关键技术,重点是I-DEAS软件的二次开发技术Open I-DEAS的具体应用,包括Dephi与I-DEAS的链接,在Dephi下编程控制I-DEAS图形界面中的选取操作并处理选取结果。  相似文献   

10.
目标导向的交互设计方法关注用户的目标,在研究产品的实际用户和潜在用户的基础上,定义出具体的原型用户(人物角色persona);使用人物角色作为脚本提纲(scenarios)的主要人物,把人物角色作为定义产品功能、行为和形式的主要工具,在设计过程中遵循行为设计的原理。  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
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."  相似文献   

19.
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.  相似文献   

20.
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.  相似文献   

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