There are a lot of different terminals existed in internet. Each of them has different demand on format andlanguage when it retrieves information. This paper introduces a Web news information publish model with multi-...There are a lot of different terminals existed in internet. Each of them has different demand on format andlanguage when it retrieves information. This paper introduces a Web news information publish model with multi-for-mat and multi-language capability. Within this model ,users no longer need specify format and language when he re-trieves information by any internet terminal. And information provider no longer need create copies for every format.A discrete model implement based on NewsML,a kind of XML standard used in news area,is presented in the paper.展开更多
射频识别RFID(Radio Frequency Identity)技术是一种非接触的自动识别技术,电子标签可以随身携带或者贴附在物体上,用户容易在不知不觉中被侵犯隐私。根据RFID系统中数据流的特点,提出了一种采集发布模型管理用户数据,允许用户定制数据...射频识别RFID(Radio Frequency Identity)技术是一种非接触的自动识别技术,电子标签可以随身携带或者贴附在物体上,用户容易在不知不觉中被侵犯隐私。根据RFID系统中数据流的特点,提出了一种采集发布模型管理用户数据,允许用户定制数据偏好规则和数据请求规则,只有当两者匹配时,请求者才能授权获得数据。该模型具有开放性、可靠性和隐私安全等特点。展开更多
针对7×24小时运行的系统,不能停止系统运行进行更新或维护的问题,根据OSGi(Open Service Gateway Initiative)框架的特点,在分析已有的服务动态更新方法基础上,克服已有策略不能保证服务更新前后的相互一致性和服务状态的一致性,...针对7×24小时运行的系统,不能停止系统运行进行更新或维护的问题,根据OSGi(Open Service Gateway Initiative)框架的特点,在分析已有的服务动态更新方法基础上,克服已有策略不能保证服务更新前后的相互一致性和服务状态的一致性,以及更新策略实现过程中的编程模型不佳问题,提出基于发布/订阅模型的服务动态更新策略。以静止状态理论为依据,利用Petri网形式化描述服务动态更新过程,从理论上验证该策略的有效性;同时,以Event Admin Service作为策略的实现工具,具有良好的编程模型,从而实现OSGi平台上的动态演化,实验结果表明该策略具有可行性。展开更多
文摘There are a lot of different terminals existed in internet. Each of them has different demand on format andlanguage when it retrieves information. This paper introduces a Web news information publish model with multi-for-mat and multi-language capability. Within this model ,users no longer need specify format and language when he re-trieves information by any internet terminal. And information provider no longer need create copies for every format.A discrete model implement based on NewsML,a kind of XML standard used in news area,is presented in the paper.
文摘射频识别RFID(Radio Frequency Identity)技术是一种非接触的自动识别技术,电子标签可以随身携带或者贴附在物体上,用户容易在不知不觉中被侵犯隐私。根据RFID系统中数据流的特点,提出了一种采集发布模型管理用户数据,允许用户定制数据偏好规则和数据请求规则,只有当两者匹配时,请求者才能授权获得数据。该模型具有开放性、可靠性和隐私安全等特点。
