共查询到20条相似文献，搜索用时 218 毫秒
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伴随着RFID技术的流行,RFID中间件在完成数据的遴选、时间过滤和管理方面起着非常重要的作用,但中间件只提供业务接口,很难自行提升安全性能。该文作者设计了一款灵活的RFID中间件,除了实现和完善基本的RFID中间件功能外,还针对当前RFID安全威胁,提供了灵活的安全架构。安全架构整体和每一模块都是集中管理的,为安全性能的提高提供了极大的便利,同时隐藏了复杂性,保证了系统和标签数据的安全。 相似文献
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分布式对象中间件是为了解决分布计算和软件复用过程中存在的异构问题而提出的。本文分析了分布式对象中间件的发展,探讨了基于XML的中间件的实现架构。 相似文献
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分布式对象中间件是为了解决分布计算和软件复用过程中存在的异构问题而提出的。本文分析了分布式对象中间件的发展，探讨了基于XML的中间件的实现架构。 相似文献
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本文基于嵌入式ARM9硬件环境和开放式Linux操作系统,探究了一种嵌入式RFID数据采集终端。RFID中间件就是运行在该终端之上的软件,完成原始数据信息的分析与过滤。它采用模块化结构,具有良好的独立性和移植行。模块化架构方法可以缩短开发周期,利于软件系统的后期维护和扩展。嵌入式平台下的RFID数据采集终端为射频识别技术的实际应用带来更为广阔的天地。 相似文献
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《科技成果管理与研究》2010,(8):I0002-I0002
华南理工大学刘发贵教授领导的课题组所完成的“RFID应用集成中间件技术研究与开发”项目受到国家863计划重点项目课题资助。该项目攻克了RFID中间件及其应用的关键技术，取得一系列知识产权， 相似文献
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本文首先分析总结了物联网概念和特点,并在此基础上提出了物联网的三层体系架构:感知层、网络传输层和应用层;接着明确了三层架构体系中各层的功能;最后重点讨论了实现各层功能所需的关键技术:RFID、无线传感网、中间件等. 相似文献
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李霞 《科技成果管理与研究》2010,(7):124-126
1项目简介
华南理工大学刘发贵教授领导的课题组所完成的“RFID应用集成中间件技术研究与开发”项目受到国家863计划重点项目课题资助。该项目结合我国RFID技术及产业化发展现状，从国情出发，坚持自主创新与集成创新相结合，攻克了RFID中间件及其应用的关键技术，取得一系列知识产权， 相似文献
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ICE(Internet Communications Engine)是一种面向对象的中间件平台,为构建面向对象的客户服务器应用提供了工具、API和库支持。无论部署环境如何,这些应用的源码都是可移植的。主要阐述了中间件在分布式软件开发中的应用。介绍了分布式开发理论与中间件的发展和现状,另外着重介绍了ICE及ICE的一些理论,实现和服务。 相似文献
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分析数据集合访问的过程,针对.NET架构的实际应用,根据.NET架构提供的类和对象,提出数据访问中间件的结构。并使用外观模式、工厂模式、单件模式实现此中间件。 相似文献
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本文简介了国际信息与文献联合会(FID)及其第48届大会的基本情况,同时简述了德国国家信息技术中心的状况,并针对上述内容思考了几个有关现代信息领域的问题。 相似文献
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The structure and evolution of industrial clusters: Transactions, technology and knowledge spillovers 总被引：2，自引：0，他引：2
In this paper, we investigate the relationship between location patterns, innovation processes and industrial clusters. In order to do this we extend a transactions costs-based classification into a knowledge-based taxonomy of clusters, along the lines suggested by a critical revision of the main assumptions underlying most of the existing literature on spatial clusters. Our arguments show that the transactions costs approach and the innovation and technological regimes framework are broadly consistent, and that real insights into the microfoundations, nature, and evolution of clusters can be provided by these classification systems. 相似文献
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This paper studies the impact of R&D spending on output as well as forecasting the impact of a regionally enhanced R&D tax credit on the ‘user cost’ (or price) of R&D expenditure and subsequently the demand for R&D. The example we use of a ‘disadvantaged’ region is Northern Ireland (partly because it has the lowest levels of R&D spending in the UK, and partly because the necessary data is available for this region). We find that in the long run, R&D spending has a mostly positive impact on output across various manufacturing industries. In addition, plants with a zero R&D stock experience significant one-off negative productivity effects. As to the adjustment of R&D in response to changes in the ‘user cost’, our results suggest a rather slow adjustment over time, and a long-run own-price elasticity of around −1.4 for Northern Ireland. We also find that to have a major impact on R&D spending in the Province, the R&D tax credit would need to be increased substantially; this would be expensive in terms of the net exchequer cost. 相似文献
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A large amount of literature provides empirical evidence in support of Marshall or Jacobs theories regarding the specialization or diversity effects on the economic performance of regions. This paper surveys these scholarly contributions and summarizes their results according to their similarities and differences. The reviewed empirical work presents a diverse picture of possible conditions and circumstances under which each kind of externalities could be at work. The wide breadth of findings is generally not explained by differences in the strength of agglomeration forces across industries, countries or time periods, but by measurement and methodological issues. The levels of industrial and geographical aggregation together with the choice of performance measures, specialization and diversity indicators are the main causes for the lack of resolution in the debate. The 3-digit industrial classification seems to be the level at which MAR and Jacobs effects are undistinguishable from one another, and this is often exacerbated by a high level of geographical aggregation. 相似文献
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