实时BIA技术对蛋白A与免疫球蛋白G相互作用的研究

应用实时BIA技术,探讨了蛋白A与小鼠免疫球蛋白G (MIgG)之间的相互作用,求出相互作用的动力学速率常数ka=5.07×10⁴ (mol/L)^-1s^-1,kd=9.65×10^-5(s^-1),结合常数KA=5.25×10⁸(mol/L)^-1.同时使用蛋白A固定的传感片用于MIgG浓度的检测,在 0.64～ 12mg/L浓度区间内,MIgG的响应值与其浓度有非常好的线性关系.     

基于实时新闻分析的馆藏资源推荐方法研究

如何在信息时代增加馆藏资源的可见度,提高馆藏资源的利用率,是一个急需研究和解决的问题。实时新闻和图书馆馆藏资源间的连接可以提高图书馆馆藏资源的可见度,增加图书馆馆藏资源的利用率,为用户提供丰富、全面的阅读资料和专业知识,帮助用户形成全面、深入阅读和思考的良好习惯。基于快数据处理技术的实时新闻分析和馆藏资源推荐框架,通过分析网络实时新闻获取用户感兴趣的话题,应用快数据处理技术、潜在语义分析、非负矩阵分解、权重矩阵分解等方法对数据进行语义分析和处理,对图书馆馆藏资源进行相关话题的分类和推荐。对OCLC的百万数据集和雅虎新闻的分析和实验表明,这种资源推荐框架和方法有较好的应用效果。图2。表1。     

神经网络在智能公交实时调度中的设计与实现

神经网络是一种新兴的数学建模方法,它具有识别复杂非线性系统的特性,比较适合实时调度。在智能公交实时调度中加入误差反向传播算法,利用误差反向传播算法超强的学习能力和泛化能力,通过对海量公交历史调度数据的学习,可以建立公交车到达目的站点的预测模型;通过实时GPS数据,就可以预测车辆到达目的地的大概时间,为建立智能公交调度提供极大方便。     

嵌入式实时数据库系统并发控制协议AC-Based OCC-FV研究

替代和补偿是实时事务的两个基本特点,也是并发控制的主体,同时给并发控制带来了新的问题。AC-Based OCC-FV协议把替代和补偿综合到乐观并发控制协议OCC-FV中来,对于处于接纳队列中的每个事务,尽可能地选择无冲突替代进入就绪队列,但这只是一个理想情况。如果冲突不可避免,不仅要选择一个合适替代参与并发控制,即使冲突发生时,也要确保系统始终处于一个安全状态。在冲突消解时,结合补偿的特点,对乐观并发控制协议OCC-FV进行了扩展,当事务失败后,立即调度相应补偿事务,以防止系统灾难的发生。     

基于Openfire+Spark构建IM实时交流平台

分析即时通讯交流工具在国内外图书馆应用现状,指出目前各种IM工具的不足之处,并提出以开源软件Openfire+Spark构建本地IM实时交流平台的解决方案。介绍Openfire和Spark软件的功能特点,指出技术思路,同时以南京大学图书馆的IM实时交流平台的搭建为例说明实践过程和应用效果。     

国内重点高校图书馆实时咨询服务调查研究

通过网页浏览、问卷调查及实时咨询等方式,从使用软件、服务时间、服务对象、服务效果等方面,对"211工程"高校图书馆实时咨询服务开展现状进行调查和分析,并就正确认识实时咨询、树立"大咨询"概念提供了一些思考和建议.     

An integrated DBP for streams with (<Emphasis Type="Italic">m,k</Emphasis>)-firm real-time guarantee

(m,k)-firm real-time or weakly hard real-time (WHRT) guarantee is becoming attractive as it closes the gap between hard and soft (or probabilistic) real-time guarantee, and enables finer granularity of real-time QoS through adjustingm andk. For multiple streams with (m, k)-firm constraint sharing a single server, an, on-line priority assignment policy based on the most recentk-length history of each stream called distance based priority (DBP) has been proposed to assign priority. In case of priority equality among these head-of-queue instances, Earliest Deadline First (EDF) is used. Under the context of WHRT schedule theory, DBP is the most popular, gets much attention and has many applications due to its straightforward priority assignment policy and easy implementation. However, DBP combined with EDF cannot always provide good performance, mainly because the initial, DBP does not underline the rich information on deadline met/missed distribution, specially streams in various failure states which will travel different distances to restore success states. Considering how to effectively restore the success state of each individual stream from a failure state, an integrated DBP utilizing deadline met/missed distribution is proposed in this paper. Simulation results validated the performance improvement of this proposal. Project supported by the National Natural Science Foundation of China (No.60203030) and Advanced Research Program of France-China (Nos. PRA S101-04, PRA S103-02)     

Design and FPGA verification of a novel reliable real-time data transfer system

Considering the increasing use of information technology with established standards, such as TCP/IP and XML in modem industrial automation, we present a high cost performance solution with FPGA （field programmable gate array） implementation of a novel reliable real-time data transfer system based on EPA （Ethemet for plant automation） protocol and IEEE 1588 standard. This combination can provide more predictable and real-time communication between automation equipments and precise synchronization between devices. The designed EPA system has been verified on Xilinx Spartan3 XC3S1500 and it consumed 75% of the total slices. The experimental results show that the novel industrial control system achieves high synchronization precision and provides a 1.59-ps standard deviation between the master device and the slave ones. Such a real-time data transfer system is an excellent candidate for automation equipments which require precise synchronization based on Ethemet at a comparatively low price.     

一种实时入侵检测系统设计与实现

针对IDS存在的漏报和误报率高的缺陷,本文首先在分析了主流操作系统Windows的消息驱动特征后,介绍了如何利用系统调用截获技术,将系统调用截获至判断机构,安全的系统调用继续,非安全系统调用则重定向到检测机构进行实时入侵检测。最后,本文提出了一种实时入侵检测系统的模型并给出了简单的实现方案。