近邻半监督聚类算法的MATLAB实现

本文提出了一种用Matlab实现近邻半监督聚类算法的实例,补充进入MATLAB工具箱,并使用该算法对三个UCI数据集进行聚类,并通过F-measure指标验证了该算法的有效性。     

可生物降解高吸水性树脂及其研究进展

简述了高吸水性树脂的生物降解机理及降解性能评价方法，综述了国内外可生物降解高吸水树脂的制备和发展情况，最后指出了其存在的缺陷和今后研究的方向。     

基于神经网络的Sarsa强化学习算法

标准的Sarsa算法对状态空间的要求是离散的且空间较小,而实际问题中很多的系统的状态空间是连续的或尽管是离散的但空间较大,这就要求有很大的空间来存储状态动作对(State-Action-Pair)。对此文中提出用BP网络队列保存SAPs,实验验证可以解决由于空间过大而带来的Q值表示问题。     

Immune Synapse Residency of Orai1 Alters Ca2+ Response of T Cells

CRAC, which plays important role in Ca²⁺-dependent T-lymphocyte activation, is composed of the ER-resident STIM1 and the plasma membrane Orai1 pore-forming subunit. Both accumulate at the immunological synapse (IS) between a T cell and an antigen-presenting cell (APC). We hypothesized that adapter/interacting proteins regulate Orai1 residence in the IS. We could show that mGFP-tagged Orai1-Full channels expressed in Jurkat cells had a biphasic IS-accumulation kinetics peaked at 15 min. To understand the background of Orai1 IS-redistribution we knocked down STIM1 and SAP97 (adaptor protein with a short IS-residency (15 min) and ability to bind Orai1 N-terminus): the mGFP-Orai1-Full channels kept on accumulating in the IS up to the 60th minute in the STIM1- and SAP97-lacking Jurkat cells. Deletion of Orai1 N terminus (mGFP-Orai1-Δ72) resulted in the same time course as described for STIM1/SAP97 knock-down cells. Ca²⁺-imaging of IS-engaged T-cells revealed that of Orai1 residency modifies the Ca²⁺-response: cells expressing mGFP-Orai1-Δ72 construct or mGFP-Orai1-Full in SAP-97 knock-down cells showed higher number of Ca²⁺-oscillation up to the 90th minute after IS formation. Overall, these data suggest that SAP97 may contribute to the short-lived IS-residency of Orai1 and binding of STIM1 to Orai1 N-terminus is necessary for SAP97-Orai1 interaction.     

隔震结构的温度应力研究

隔震结构是近年来受到广泛使用的一种新型结构形式。对新建工程——西安330kV西北郊变电站中的110kV配电楼采用隔震技术,这是隔震技术首次应用于电力系统中,实践证明取得了良好的效果。对该结构采用SAP2000程序及有限元分析方法,得到其在温度应力作用下的内力,并将计算结果与相同条件下采用抗震技术及采用后浇带方法等引起的不同温度应力问题进行了探讨研究。     

某大型火电厂主厂房钢框排架结构的弹塑性时程分析

为了研究大型火电厂主厂房钢结构框排架结构的抗震性能,对相似比为1/10的模型结构进行了拟动力试验.利用SAP2000软件对钢框排架进行了弹塑性时程分析,并与试验结果进行比较分析,两者吻合较好.研究结果表明:火电厂主厂房钢框排架结构在8度、9度罕遇地震作用下能满足变形要求,但结构存在较多的薄弱环节,在设计中应引起高度重视.     

利用Web Service实现SAP PORTAL与异构系统的集成

目前,越来越多的中国大型企业在信息化建设中采用了SAP的系统作为主干平台,但是因为种种原因,这些企业都存在信息资源整合的问题。首先,很多企业在使用SAP的系统前,已经使用过其它的信息平台,旧平台中的数据不能简单地废除;其次,大型企业的下属各单位可能采用的并非SAP的系统;再次,一个大型企业往往有多个信息化系统,这些系统之间则需要进行数据交流。所以,对于使用SAP平台的企业来讲,大量的集成工作是难免的。本文将以实例,来介绍利用Web Service技术实现SAP PORTAL与异构系统集成的工作。     

基于下一代Internet的服务管理研究

Internet is best effort network, on the whole, it doesn't provide any quality of service assurance for services. Especially,all kinds of stream media need more network performance and quality of service. Currently, because of existing many heterogeneous networks, such as telecommunication network, IP data network , mobile network and so on ,in order to break off this heterogeneous network isolated complexion ,research and developmentnext generation network must be carried out,only by this way,can these isolated heterogeneous network be merged into an all IP network. This network will provide enormous services for service users,how to manage these services effectively is a topic proposed by next generation internet. [1] gave research status for service management and advance,this paper researches service management requirement for next generation Internet and workflow etc,and based on these technique,a service management architecture model is proposed. It consists of service access layer, service deployment layer, service providing layer, service mapping layer, policy control layer and network element managing layer. These layers coordinate to implement service management.     

JCO访问SAP R/3接口分析与应用

SAP R/3是知名的ERP软件,它提供了先进的接口技术,基于JAVA平台的管理信息系统要实现与SAP互访需要通过SAP提供的JCO组件.介绍了SAP R/3目前流行的3种接口技术,以及通过JCO如何访问R/3接口.     

国内外超吸水性树脂现状与展望

介绍超吸水性树的分类,用途以及国内外生产现状和未来发展。