张家界机场气象预报指标诊断系统

张家界荷花机场气象预报室从业务需要出发,编制了一套指标诊断系统,应用于实际业务中,对提高预报的准确性、做好日常航空飞行的气象保障工作具有较好的指导意义。系统采用可视化编程,引进气象学诊断分析相关原理方法,使系统本身具有自动性、适用性和可再开发性等特点。     

钢铁企业全厂仪表维修设施设计初探

以我国某大型钢铁企业全厂仪表维修设施的设计方案为例,简要说明了仪修设施的设计原则、全厂仪表维修的一般解决方案,较详细地介绍了仪修设施专业划分、实验室及维修车间的设置和主要设备构成,为该类项目的设计和工程建设提供一定参考。     

DCS系统在新型干法水泥生产线中的应用

介绍了在新型干法水泥生产线中全厂全线采用DCS系统进行设计应用,对企业降低费用、提高效率和生产率具有十分重大意义。     

Chinese-based research on subject-covered information retrieval supervised by textual semantic domain

By means of analysis of artificial intervention in ready-retrieved text, training set used to compare with new texts from large-scale real texts corpus is provided. It is based on the data-originated presentation of training set that a special formula to calculate semantic cohesion between new texts and training set is devised. The semantic cohesion of new text is the average value of semantic evaluation of all elements involved, and semantic evaluation of an element depends on its semantic relevance with the training set and on the semantic ratio of its domain to synonymous domain. In terms of empirical verification a conclusion is drawn that semantic cohesion is the key measurement standard of textual retrieval. Despite the advantages of textual retrieval, limitations of formula-raised condition and analyst＇s accomplishments make the analysis involved in this paper imperfect.     

Exponential stability for uncertain neutral systems with Markov jumps

This paper deals with the global exponential stability problems for stochastic neutral Markov jump systems （MJSs） with uncertain parameters and multiple time-delays. The delays are respectively considered as constant and time varying cases, and the uncertainties are assumed to be norm bounded. By selecting appropriate Lyapunov-Krasovskii functions, it gives the sufficient condition such that the uncertain neutral MJSs are globally exponentially stochastically stable for all admissible uncertainties. The stability criteria are formulated in the form of linear matrix inequalities （LMIs）, which can be easily checked in practice. Finally, two numerical examples are exploited to illustrate the effectiveness of the developed techniques.     

基于ZigBee协议的无线传感器网络研究

长期以来,业界一直想要建立一种低价、低传输率、短距离、低功率的无线通讯标准.Bluetooth的出现一定程度上解决了这一问题,但是具有Bluetooth功能的传输模块售价一直居高不下,严重影响了其技术的普及和推广.ZigBce是一种新兴的近距离、低复杂度、低功耗、低数据速率、低成本的无线网络技术,它是一种介于无线标记技术和蓝牙之间的技术提案,主要用于近距离无线连接.结合传感器技术,通过使用CHIPCON公司最新的CC2430的射频SoC芯片介绍了Zig-Bee协议的无线传感器网络系统的开发与应用,并给出了一个实际系统的软硬件设计方案.最后对该设计方案进行测试,给出测试结果,证明了该方案的可行性.     

wxSocket分析及其应用

wxSocket为跨平台网络编程提供了另一种实现方法,它屏蔽了各操作系统Socket操作上细微的差异,使得开发人员能专注于编写业务逻辑.wxSocket中最重要的类是wxSocketBase,它为使用wxSocket提供了统一的接口,并且形成了wxSocket中各类的使用模式和事件机制.     

基于人工免疫的网络安全态势评估模型

本文将人工免疫原理应用到网络安全态势评估的研究中.通过对入侵检测模型中有关自体、非自体、抗原的形式化描述,建立了抗体细胞的演化机制、动态免疫记忆、免疫监视等免疫机制.依据人体免疫系统抗体浓度的变化与病原体入侵强度的对应关系,建立了网络安全态势实时定量计算模型.