共查询到18条相似文献，搜索用时 312 毫秒
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随着信息社会的发展,运行在网络中的设备及业务越来越多,时间的精确性与可靠性是各种设备及业务系统正常运行的基础保障。对比了流行的GPS及NTP时间同步方式,并介绍了NTP的基本配置。 相似文献
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网络时间协议是用于时间同步的一种协议,它实现一台计算机客户端从另一台时间服务器或者相关的时间源获取时间并同步。介绍了NTP协议的原理以及在不同操作系统中的应用。 相似文献
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光纤通信作为目前较为理想的通信方式具有很多优势,SDH通信系统因其具有统一规范的速率以及自愈同步等特征被广泛应用。本文在介绍SDH传输网络及时间同步的概念的基础上,对SDH网络中频率和时间同步、时钟同步方式、以及SDH同步时钟组网原则、组网方式和时钟配置等关键技术进行了讨论和研究。 相似文献
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南水北调东线工程沿线水资源的供给和需求都存在明显的时间与空间的不均匀性.为解决这种不均匀性,实现工程的供水目标,将图论的相关理论与方法引入到东线工程中,界定了南水北调东线水资源的网络系统.提出了南水北调东线水资源的时间配置与空间配置相结合的网络配置新思路,阐述了东线水资源的网络配置内涵;在分析空间配置与时间配置内容与关系的基础上,设计和分析了南水北调东线水资源的网络配置框架,从而为东线水资源配置提供参考. 相似文献
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从资源配置视角看,网络信息生态系统的核心是网络信息资源动态配置。本文利用复杂适应系统理论,深入探讨网络信息生态系统信息资源动态配置的动力和过程,全面分析网络信息资源动态配置的主要形态——信息资源流,构建网络信息资源流模型。 相似文献
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在如今的信息时代,VPN技术凭借其特有的灵活性、安全性、经济性和扩展性,已经成为企业主流的远程访问方式之一。可以帮助远程用户、公司分支机构、商业伙伴及供应商同公司的内部网建立可信的安全连接。从VPN的初级配置着手进行论述,使初学者能快速配置出简单有效的VPN服务器。 相似文献
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针对高等院校科研管理中存在的时间浪费现象,指出时间管理在高校科研管理中的重要性,并引用实例详细阐述了如何在实际工作中通过选择工作重心、促进科研团队合作以及利用现代科技手段有效节约时间、借用时间和减少时间浪费,从而最大限度地开发科研教师的时间资源. 相似文献
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Joe Nandhakumar 《The Information Society》2002,18(4):251-262
This article reports an ethnographic study that investigates the ways in which time was experienced and managed in an information systems (IS) development project. The study is based on 6 months of intensive overt participant observation of the development of Executive Information Systems in a large multinational company. Drawing on time geography, this article discusses a social perspective of time and social dynamics of time management in IS development project teams and outlines its implications for formal approaches to time management. 相似文献
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Soraj Hongladarom 《The Information Society》2002,18(4):241-249
Time is affected significantly by the spread of the Internet throughout the world. On the one hand, the new communication technologies provide for "round-the-clock" operation, threatening to obliterate time as a function of a culture's sense of identity. On the other hand, the Internet enables local cultures to resist the globalizing and homogenizing tide. The situation points to a dilemma. Local cultures find it hard to resist integrating itself with the world through the Internet, but at the same time they feel a real need to protect and to promote their identities. This article tries to show that local cultures find the medium an appropriate and effective one in putting forward their agenda. As the globalizing force signified by the Internet tends to occur at a superficial level, different conceptions of time can coexist at the same time. The emerging conception of time is thus characterized neither by the premodern one of identification of time with nature, nor by the modern one of an abstract entity pointing forward, but by a "web" allowing for different strands to go their own way while weaved together to create a coherent pattern, and this is how the dilemma is resolved. A case study of the Thai conceptions of time and the current debate on changing the time standard is presented in order to illustrate the point. 相似文献
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以上海、杭州、武汉、深圳等地高科技企业的研发团队为研究样本,考察时间压力、时间个性差异和研发团队创新绩效间的影响机制,研究表明,不同类型的时间个性差异对研发团队创新绩效的影响也不同,时间认知特征差异与研发团队创新绩效正相关,时间情感特征差异与研发团队创新绩效负相关;时间压力对时间认知特征差异与研发团队创新绩效间的关系、时间情感特征差异与研发团队创新绩效间的关系,均具有显著的调节效应。 相似文献
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具有时变不确定参数的线性时滞系统的鲁棒镇定 总被引：1，自引：0，他引：1
研究了具有时变不确定参数的线性时滞系统的鲁棒镇定问题．提出鲁棒稳定化控制器一种新的设计方法．现有的一些结果可以作为本文的一些特例得到． 相似文献
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Nicola Green 《The Information Society》2002,18(4):281-292
The current explosion in mobile computing and telecommunications technologies holds the potential to transform "everyday" time and space, as well as changes to the rhythms of social institutions. Sociologists are only just beginning to explore what the notion of "mobility" might mean when mediated through computing and communications technologies, and so far, the sociological treatment has been largely theoretical. This article seeks instead to explore how a number of dimensions of time and space are being newly reconstructed through the use of mobile communications technologies in everyday life. The article draws on long-term ethnographic research entitled "The Socio-Technical Shaping of Mobile Multimedia Personal Communications," conducted at the University of Surrey. This research has involved ethnographic fieldwork conducted in a variety of locales and with a number of groups. This research is used here as a resource to explore how mobile communications technologies mediate time in relation to mobile spaces. First the paper offers a review and critique of some of the major sociological approaches to understanding time and space. This review entails a discussion of how social practices and institutions are maintained and/or transformed via mobile technologies. Ethnographic data is used to explore emerging mobile temporalities. Three interconnected domains in mobile time are proposed: rhythms of mobile use, rhythms of mobile use in everyday life, and rhythms of mobility and institutional change. The article argues that while these mobile temporalities are emerging, and offer new ways of acting in and perceiving time and space, the practical construction of mobile time in everyday life remains firmly connected to well-established time-based social practices, whether these be institutional (such as clock time, "work time") or subjective (such as "family time"). 相似文献