用XML表示和发布图文混合信息

可扩展标识语言XML以其合理的数据组织结构和可扩展的特性,广泛适合于表示各类复杂的数据形式。利用XML表示和发布图文混合信息具有很重要的实际价值。基于实例介绍了使用XML表示和发布图文混合信息内容的方法和过程。     

标准并行接口汉字热敏微型打印机的实现

介绍标准并行接口汉字热敏微型打印机的电路原理、标准汉字库芯片汉字点阵的结构和数据格式、读汉字库和点阵代码调理的程序设计算法。     

A QoS-aware composition method supporting cross-platform service invocation in cloud environment

With the increasing popularity of cloud computing technologies, more and more service composition processes are enacted and executed in could environment. Compared with the various and approximately infinite application requirements from end users, the web services held by a cloud platform are usually limited. Therefore, it is often a challenging effort to develop a service composition, in such a situation that only part of the functional qualified candidate services could be found inside a cloud platform. In this situation, the absent services will be invocated in a cross-platform way outside the cloud platform. In view of this challenge, a QoS-aware composition method is investigated for supporting cross-platform service invocation in cloud environment. Furthermore, some experiments are deployed to evaluate the method presented in this paper.     

Layered Working-Set Trees

The working-set bound [Sleator and Tarjan in J. ACM 32(3), 652–686, 1985] roughly states that searching for an element is fast if the element was accessed recently. Binary search trees, such as splay trees, can achieve this property in the amortized sense, while data structures that are not binary search trees are known to have this property in the worst case. We close this gap and present a binary search tree called a layered working-set tree that guarantees the working-set property in the worst case. The unified bound [B?doiu et al. in Theor. Comput. Sci. 382(2), 86–96, 2007] roughly states that searching for an element is fast if it is near (in terms of rank distance) to a recently accessed element. We show how layered working-set trees can be used to achieve the unified bound to within a small additive term in the amortized sense while maintaining in the worst case an access time that is both logarithmic and within a small multiplicative factor of the working-set bound.     

关于强化政工干部培训和管理的思考

介绍了国企政工干部培训和管理中存在的问题和成因,并有针对性地提出了加强政工干部工作队伍的对策措施。     

逐点比较直线插补算法的优化

基于八方向插补算法,提出一种改进的逐点比较插补算法。通过最大插补误差分析,利用解析求解、数值比较及计算机运算,得到一种插补精度较高、运算速度较快、速率较平稳的偏差计算方法。     

基于Snort的混合入侵检测系统的研究与实现

在分析研究snon系统的优缺点的基础上,利用其开源性和支持插件的优势,针对其对无法检测到新出现的入侵行为、漏报率较高以及检测速度较低等问题,在snon系统的基础上结合入侵检测中的数据挖掘技术,提出一种基于snort系统的混合入侵检测系统模型。该系统模型在snort系统原有系统模型基础上增加了正常行为模式构建模块、异常检测模块、分类器模块、规则动态生成模块等扩展功能模块。改进后的混合入侵检测系统能够实时更新系统的检测规则库,进而检测到新的入侵攻击行为;同时,改进后的混合入侵检测系统具有误用检测和异常检测的功能,从而提高检测系统检测效率。     

TiO2对烧成镁钙砖烧结性能的影响

研究了两种晶型的TiO2(锐钛矿型和金红石型)作为添加剂对烧成镁钙砖烧结性的影响.结果表明,两种晶型的TiO2都能显著促进镁钙砖的烧结,其中以锐钛矿晶型为添加剂的效果好于金红石型的.XRD分析结果表明,TiO2与CaO反应生成了CaTiO3,这是加入TiO2使镁钙砖烧结性变好的主要原因.     

山东蓝宝石的色源和改色研究

报道了山东蓝宝石的ＸＰＳ，ＳＩＭＳ的测试结果，基于成份分析，光谱测试数据及对改色处理结果的分析，作出了关于山东蓝宝石的色源解释。山东蓝－宝石含铁量明显偏高，Ｆｅ＾２＋－Ｔｉ＾４＋离子间的电荷转移及Ｆｅ＾２＋，Ｆｅ＾２＋离子对的电子跃迁这两种机制的迭加，是造成其色深，失透的基本     

C3H6选择性催化还原NO催化剂Ag／γ—A12O3的研究

采用低负载量的(0～3％)Ag／γ-A12O3体系作为C3H6选择性催化还原(C3H3-SCR)NO的催化剂，考察了银负载量、反应温度、空速对NO转化率的影响．同时对于原料气中氧的作用进行了研究．结果表明：银负载量为1．5％时，催化剂表现出最高的反应活性；在考察的条件范围内，原料气中含氧对NO的还原有促进作用，适宜的氧浓度为0．27％；反应温度的过高会导致还原气中C3H6大幅度转化为CO2。