消防救援环境ZigBee无线传感器网络路由协议研究     

周麟  阚凤龙 《科技广场》2010,(1):51-53

文章在分析比较了目前流行的几种无线传感器网络路由协议的基础上,结合灭火救援工作方面的特点和需求,提出了一种适用于灭火救援工作环境的网状拓扑结构的ZigBee无线传感器网络的路由算法,并从路由建立、路由维护、路由恢复等方面进行了详细描述。该路由算法对其它具有ZigBee网状拓扑结构的系统具有一定的参考价值。  相似文献   

Towards understanding integration in research and research policy   总被引：1，自引：0，他引：1  

Terttu Luukkonen  Maria Nedeva 《Research Policy》2010,39(5):674-686

Increasing the level of integration is currently an important policy objective for European research. This brings to light issues regarding the meaning and nature of integration and integration in research; issues associated with the mechanisms to enable and facilitate higher levels of integration in research as part of a policy process; and issues related to the assessment and evaluation of success or failure of policy instruments. The paper addresses these issues by introducing a nuanced conceptualisation developed with particular reference to the policy task for promoting integration and proposing a framework that captures essential features in integrative processes in research—both at the level of researchers and organisations. Furthermore, an empirical example of a Network of Excellence is used to illustrate how the proposed framework can be applied.  相似文献   

Co-operative ties and innovation: Some new evidence for UK manufacturing     

Philip R. Tomlinson 《Research Policy》2010,39(6):762-775

Drawing upon survey data from 436 firms, this paper explores the impact of co-operative ties upon levels of innovation (both product and process) in five UK manufacturing industries. Unlike a number of previous studies in this area, the data itself captures both the scale and multi-dimensional nature of both co-operation and innovation. The paper finds evidence to support the hypothesis that vertical co-operative ties are a significant factor in explaining firms’ levels of innovative performance. However, the empirical analysis suggests that it is the strength of such ties - and not just their existence - which are important with stronger dyadic relations between firms having a positive and significant impact upon levels of innovation. The analysis also finds that in some sectors, horizontal co-operative ties are (albeit to a lesser extent) also important.  相似文献   

基于Zigbee的无线温度传感器网络设计与实现     

周浩慧 《人天科学研究》2010,(7):86-88

为有效地监控和管理煤矿安全,提高矿井安全生产监控技术,设计并开发了基于ZigBee协议的无线温度传感器网络。该网络由若干分站和探头组成。探头负责将温度传感器所采集到的信息反馈给分站,从而达到对一块区域进行温度监控的目的。实时监测矿工周围环境的温度,预防事故发生。本系统通过软件升级,可以实现人员定位监测,系统附加值高。  相似文献   

基于公钥基础设施的园区网络安全系统设计与实现     

付永平  赵银亮  任秦安  钟生海  付争方 《安康学院学报》2006,18(1):104-107

本文研究了园区网络的特点,设计了基于公钥基础设施的园区网络安全系统,并基于JAVA技术实现了该系统.  相似文献   

论企业技术创新网络的构建   总被引：1，自引：0，他引：1  

鲁晓 《许昌学院学报》2007,26(2):60-64

企业的技术创新网络是企业在创新过程中的联网行为,企业通过创新合作关系与其他企业、高校和科研机构、政府以及中介机构联结在一起,形成了企业的技术创新网络.创新网络的构建是企业在网络中进行技术创新的第一步,包括外界技术源的搜索、企业的纵向产品开发系列、企业与政府的联结网络以及其他网络的构建四个方面.企业创新网络是企业为应付创新复杂化和市场竞争加剧等系统性挑战而形成的一种新型的制度安排,它对于高新技术企业的成长和发展以及我国企业形成核心竞争力,有着不可忽视的推动作用.  相似文献   

Shifts in Thinking through a Teachers' Network     

LINDA MITCHELL 《Early Years: An International Journal of Research and Development》2003,23(1):21-34

This article describes the organisation of a teachers' professional network and the teachers' use of 'pedagogical documentation' to analyse, reflect on and critique pedagogical practice. It explores ways in which a forum and process were created for teachers to think about assumptions, values and the purpose of education, explore reciprocal influences of teachers' and children's interactions, and deepen opportunities for parents and children to contribute to the curriculum. It discusses policy and practice implications and points to ways for engaging in a broader debate.  相似文献   

营造良好信息氛围,提高学生信息素养     

章敏丽 《宁波广播电视大学学报》2005,3(3):63-64

随着社会信息化程度的不断提高，信息素养已成为时代对人类的新要求，提高在校学生的信息素养也成为现代教育的新任务。本文结合实际教学工作，阐述如何在学生日常生活中营造良好信息氛围，提高学生的信息素养。  相似文献   

复杂通信网络中异常QoS目标寻迹的研究     

杨英 《河北软件职业技术学院学报》2019,21(2):10-12,21

针对传统异常目标计算机制在复杂通信网络中适应度不足的问题,提出一种对资源偏好度较低的异常目标寻迹算法。该算法通过参照异常目标周围参考节点的坐标数据来分析节点之间的可能间距和测试间距,并根据相应条件展开对比进而确定可能的最终目标。经过三组实验测试表明,改进后的异常目标寻迹算法能够良好地应对复杂通信网络中多个模糊节点广播错误数据情形下的寻迹问题。  相似文献   

Optical Character Recognition for printed Tamil text using Unicode   总被引：1，自引：0，他引：1  

SEETHALAKSHMI R.  SREERANJANI T.R.  BALACHANDAR T.  Abnikant Singh  Markandey Singh  Ritwaj Ratan  Sarvesh Kumar 《浙江大学学报(A卷英文版)》2005,6(11):1297-1305

INTRODUCTION Optical Character Recognition (OCR) deals with machine recognition of characters present in an input image obtained using scanning operation. It refers to the process by which scanned images are electroni- cally processed and converted to an editable text. The need for OCR arises in the context of digitizing Tamil documents from the ancient and old era to the latest, which helps in sharing the data through the Internet. Tamil language Tamil is a South Indian language spo…  相似文献