运行中的GSM移动通信系统无线调优的探讨     

张敏洪  杨德庄 《中国科学院研究生院学报》2001,18(1):1-5

用数学优化思想对运行中的GSM移动通信系统覆盖进行一个整体调优，通过建立数学模型描述其优化问题，并用目标更动法给出一优化算法解决工程调优中全局优化不周的缺陷.  相似文献   

Engendering Democratic Participation via the Net: Access, Voice, and Dialogue     

Nancy B. Kurland 《The Information Society》1996,12(4):387-406

Information technology in the form of the Internet and its commercial offspring (referred to in this article collectively as the Net) has received much attention as a vehicle to increase political participation. In this article, we explore the potential of the Net, a vast, loosely coupled system of electronic forums, for facilitating and hindering democratic participation. In so doing, we identify five assumptions that undergird the claim that the Net will enhance democratic participation and suggest that increased democratic participation rests on three fundamental characteristics: access, voice, and dialogue. In order for this network of electronic forums to facilitate democratic participation, educational, economic, and cultural barriers to access, voice, and dialogue must be overcome. The final part of this article raises additional challenges to realizing democracy via the Net.  相似文献   

中国社会现代化的路径图          下载免费PDF全文

何传启 《中国科学院院刊》2006,21(5):373-378

社会现代化是现代化的一个重要领域,是国家现代化的重要组成部分。《中国现代化报告2006》系统阐述了社会现代化的原理和方法。本文讨论该报告的三个要点:(1)什么是社会现代化;(2)中国社会现代化的国际差距;(3)中国社会现代化的路径图。  相似文献   

危机信息的传播模式与影响因素研究   总被引：14，自引：0，他引：14  

魏玖长  赵定涛 《情报科学》2006,24(12):1782-1785

本文利用Shannon和Weaver的信息传播模式建立了危机事件的信息模式，这种模式易于解释危机信息传播过程中所受到的影响因素。并从危机事件的属性、危机编码、通道、危机解码、噪声、危机反馈环节分析了影响危机信息传播效果的因素。  相似文献   

Researching Internet Communities: Proposed Ethical Guidelines for the Reporting of Results   总被引：4，自引：0，他引：4  

Storm A. King 《The Information Society》1996,12(2):119-128

Communication researchers and social scientists are quickly discovering the value of data that exists in the postings of members of Internet e-mail, Usenet, and real-time groups. The ability to communicate with one's peers, no matter how esoteric the interests, is causing an explosion in the number of new virtual communities. The interpersonal dynamics of these groups are increasingly coming under the scrutiny of academic research. The publicly available archived records of Internet virtual communities are being analyzed for a wide variety of research interests. The ability to do naturalistic observations of group dynamics, as they are exhibited in these exchanges of text, has captured the attention of many researchers. The institutional review boards of major universities are granting researchers exempt or expedited (exempt from full review) status for this work, due to the public nature of the notes being analyzed. These studies often involve the lack of informed consent, where the group members under study are unaware they are being monitored. There is a potential for psychological harm to the members of these groups, depending on the way results are reported. This article explores the ethical considerations that must be taken into account to protect cyberspace participants. The guidelines proposed are based on the American Psychological Association ethical guidelines for use of human subjects in research. An explanation is offered as to how such guidelines can best be applied to the study of Internet communities. The constructs of Group Accessibility (the public/private nature of the actual cyberspace occupied by a group) and Perceived Privacy (the level of privacy that group members assume they have) are defined and proposed as two dimensions by which individual Internet communities may be evaluated in order to assure the ethical reporting of research findings.  相似文献   

基于DICOM标准的PACS系统的设计与研究   总被引：2，自引：0，他引：2  

吴云  杨丹  姚伟新 《中国科技信息》2006,(13):109-109,113

本文在遵循DICOM标准的基础上，提出了一种实用的PACS实现框架，并重点阐述了信息交换子系统等关键技术。  相似文献   

网络信息传播中语言现象的研究     

刘天明 《现代情报》2007,27(11):58-60

当前网络信息传播中，一种特殊的信息符号——网络语言备受关注，其相关研究多从语言学或传播学的角度展开。本文则试图将网络信息传播环境与之相结合．对这一虚拟世界的信息符号进行一定的总结和概述，并指出今后应该致力的研究重点。  相似文献   

论我国团体标准化主体边界之认定     

陈俊华  许方  李美青 《科技管理研究》2019,39(7)

团体标准具有促进科技创新等重要作用。在我国有关团体标准的主体制度中，是否要对团体标准化主体的边界以“法人资格”为限制，值得进一步讨论。实践中，存在一定数量的产业技术联盟等社会团体可能未获“法人资格”，但却具备了开展团体标准化活动的专业能力。诚然，无须将“法人资格”作为硬性的准入门槛，而应将“专业能力”作为必备的资格条件，并突出技术组织对团体标准化活动的的支撑作用。继而有必要通过法制化路径引入主体备案制度，为非法人社会团体在标准化领域创造合法空间，从而在一定程度上缓解实际需求与相对严苛的现行法律环境之间的张力。  相似文献   

吉林省哲学社会科学规划网络管理信息系统设计与实施   总被引：3，自引：1，他引：3  

刘贵富  金中祥  徐岩  崔晓静  刘兴琴 《情报科学》2004,22(6):641-645,667

吉林省哲学社会科学规划网络管理信息系统的投入使用和吉林社科规划网站的正式开通，标志着吉林社科规划管理工作开始走上网络化、信息化和科学化的发展轨道，表明吉林社科规划管理工作走在了全国同行的前列。该系统现已成为吉林省哲学社会科学规划办公室，社会科学管理机构和社会科学工作者之间工作和交流的现代化平台。  相似文献   

无线短信通信系统的设计与实现     

刘晓度 《科技创业月刊》2007,20(2):194-195

探讨了GSM网络的短信服务功能,分析了短信服务的基本体系结构,阐述了GSM短信数传功能在车辆定位与导航领域的作用及其实现。  相似文献