面向军事行动的后勤保障系统架构与关键技术

为了解决传统系统忽略后勤保障与军事行动间交互作用的局限性,从后勤保障对军事行动的感知与响应视角,对面向军事行动的后勤保障系统进行研究.在分析系统需求的基础上,构建响应灵敏和柔韧健壮的系统架构,给出系统实现关键技术,动态捕捉后勤保障对军事行动的协同效应.该系统的研究可为后勤保障提供决策信息,对于提高后勤保障力度具有重要作用.     

多媒体教学课件的设计制作及应用

计算机技术、多媒体技术、互联网技术的发展丰富了计算机辅助教学(CAI)的手段,作为计算机辅助教学应用于课堂教学最常见的表现形式——多媒体教学课件应运而生.介绍了不同用途的多媒体课件类型和一般制作方法,对使用Microsoft PowerPoint软件制作的课堂教学类PPT课件展开详尽探讨,结合作者实际教学经验,总结归纳了教学课件的设计和制作应遵循的原则、课件制作技巧以及在艺术处理上应注意的问题,同时对课件的应用提出了建议.     

面向中小企业的电商平台挖掘系统设计

中小企业电商平台在资金和技术不足的情况下,难以快速有效的构建简单而实用的电商数据挖掘系统.文章从分析电商海量数据资源的来源、提取方法及其流程入手,提出了一个基本的数据挖掘系统方案架构,从而实现为中小企业电商平台服务的一整套数据挖掘系统.该系统架构简单实用、易搭建、易整合,可以为中小企业提供更好的服务支持.     

农网工程管理问题及改进举措分析

随着我国经济的发展,加强农网工程建设已经成为了提升农村用电水平的重要保障。目前,农网工程在推动三农发展方面发挥着非常重要的作用,这对提升城镇化建设和农村经济发展水平有重要的意义。然而,在农网工程实施的过程中,其管理方面存在许多问题。基于此,全面分析了农网工程管理方面存在的问题,并就存在的问题提出了相应的改进方法。     

基于6LoWPAN和ARM的校园无线传感网络设计

为了实现对校园多种传感信息的实时采集、处理和监控,以及对电器实现智能控制.本文采用TI公司的CC2530无线模块实现了无线传感网络的自定义组建与通信.客户端采用PC、iOS和Android三种实现,能够随时登陆查看相应信息,并远程控制电器.本方案解决了校园与互联网的信息无缝连接问题,具有广阔的应用前景.     

基于双层安全体系的移动办公应用平台设计与实现

针对移动办公应用的需求,采用HTML5技术和Android系统进行开发,本文提出一种基于双层安全体系的移动办公应用平台。系统通过移动中间件实现了多类型移动设备的统一接入,对企业OA、报账系统、公文处理进行了接口设计,无缝接入企业原有系统的数据和报表,并提供了链路安全和应用安全双层安全体系的保障,为企业人员实时、有效地获取相关工作信息提供了便利。     

基于物联网技术的乳业食品质量安全跟踪追溯系统研究

传统乳业食品跟踪追溯系统不能有效地应对三聚氰胺等乳业食品质量安全问题,因而需要研究基于物联网技术的乳业食品安全跟踪追溯系统。在探讨了物联网技术与乳业食品安全跟踪追溯系统的概念和关系后,着重分析了当前一些较为重要的跟踪追溯系统,并指出了这些策略的优缺点。最后分析了当前亟待解决的问题,展望了其未来的发展趋势。     

An analysis of the exponential stability of linear stochastic neutral delay systems

This paper is concerned with the analysis of the mean square exponential stability and the almost sure exponential stability of linear stochastic neutral delay systems. A general stability result on the mean square and almost sure exponential stability of such systems is established. Based on this stability result, the delay partitioning technique is adopted to obtain a delay‐dependent stability condition in terms of linear matrix inequalities (LMIs). In obtaining these LMIs, some basic rules of the Ito calculus are also utilized to introduce slack matrices so as to further reduce conservatism. Some numerical examples borrowed from the literature are used to show that, as the number of the partitioning intervals increases, the allowable delay determined by the proposed LMI condition approaches h_max, the maximal allowable delay for the stability of the considered system, indicating the effectiveness of the proposed stability analysis. Copyright © 2013 John Wiley & Sons, Ltd.     

Probability‐weighted nonlinear stochastic optimal control strategy of quasi‐integrable Hamiltonian systems with uncertain parameters

The nonlinear stochastic optimal control problem of quasi‐integrable Hamiltonian systems with uncertain parameters is investigated. The uncertain parameters are described by using a random vector with λ probability density function. First, the partially averaged Itô stochastic differential equations are derived by using the stochastic averaging method for quasi‐integrable Hamiltonian systems. Then, the dynamical programming equation is established based on stochastic dynamical programming principle. By minimizing the dynamical programming equation with respect to control forces, the optimal control forces can be derived, which are functions of the uncertain parameters. The final optimal control forces are then determined by probability‐weighted average of the obtained control forces with the probability density of the uncertain parameters as weighting function. The mean control effectiveness and mean control efficiency are used to evaluate the proposed control strategy. The robustness of the proposed control is measured by using the ratios of the variation coefficients of mean control effectiveness and mean control efficiency to the variation coefficients of uncertain parameters. Finally, two examples are given to illustrate the proposed control strategy and its effectiveness and robustness. Copyright © 2014 John Wiley & Sons, Ltd.