导弹子母弹抛撒的均匀性指标的

本文以导弹侵彻子母弹抛撒为背景，提出了一种适合于有限子弹抛撒的均匀性指标，并且运 用现代统计方法——Bayes Bootstrap法模拟了均匀性指标统计量的分布；另外，从火力 运用的观点出发，根据子母弹抛撒的均匀性指标的大小对战斗部毁伤效率的影响，确定了 均匀性指标的容许下限；应用统计检验方法给出了子母弹抛撒的均匀性的评定方法，为导弹侵彻子母弹抛撒的鉴定及同类武器该项目的鉴定提供可信且便于操作的方法。     

导弹子母弹抛撒的均匀性指标的确定及评定方法

本文以导弹侵彻子母弹抛撒为背景，提出了一种适合于有限子弹抛撒的均匀性指标，并且运用现代统计方法——ＢａｙｅｓＢｏｏｔｓｔｒａｐ法模拟了均匀性指标统计量的分布；另外，从火力运用的观点出发，根据子母弹抛撒的均匀性指标的大小对战斗部毁伤效率的影响，确定了均匀性指标的容许下限；应用统计检验方法给出了子母弹抛撒的均匀性的评定方法，为导弹侵彻子母弹抛撒的鉴定及同类武器该项目的鉴定提供可信且便于操作的方法。     

末修子母弹对集群目标毁伤概率的数值计算

建立了末修子母弹对集群目标毁伤概率的计算模型,根据集群目标布阵特点建立坐标系,采用Monte-Carlo试验统计法,随机模拟子母弹抛撒落点,通过判断子弹弹道末端对探测目标的打击弹道修正来得到被打中的目标编号,并用VC++编程实现了末修子母弹对集群目标的毁伤概率的计算.该计算模型为末修子母弹对集群目标的毁伤研究提供了科学实用的计算平台,其计算结果可以作为相关实弹试验设计的重要参考因素.     

末修子母弹对机场跑道封锁概率计算仿真研究

将机场跑道看作线目标,用末修子母弹对其攻击具有较高的射击效能。在分析末修子母弹抛撒和运动特性的基础上,提出一种模拟方法用来近似模拟威力椭圆环内末修子弹的落点,用Monte-Carlo法对末修子母弹对机场跑道的封锁概率仿真模拟,并进行了实例计算。结果表明用该方法计算末修子母弹对机场跑道的封锁概率简单、快速,且具有一定的可信性,为分析末修子母弹武器系统射击效能提供了参考工具,对研究末修子母弹对机场跑道的射击效能具有一定的参考价值。     

侵彻子母弹对机场跑道的封锁概率计算研究

论述了侵彻子母弹对跑道的封锁概率的MonteCarlo计算方法,并针对某型侵彻子母弹战斗部建立了数学模型和仿真模型,进行了实例计算,结果表明用该方法计算侵彻子母弹的封锁概率,简单、快速且可靠。最后分析了仿真次数对计算精度的影响。     

末端修正子母弹对面目标的射击效能评估

作为射击精度评估的常用指标,无论是圆概率偏差,还是命中概率都没有涉及面目标的功能结构的重要度,而命中重要程度不同的区域,其射击效能是不同的。针对末修子母弹打击面目标时射击效能的评价问题,在通过数值模拟法产生末修子母弹的落点散布,以及利用毁伤树分析方法对面目标进行功能区域划分的基础上,利用Monte-Carlo仿真方法计算了子母弹对各功能区域的命中概率Pi,并定义了基于区域结构及重要度的射击命中度和毁伤概率,从而综合评估了整体的射击效能。最后通过仿真算例说明了该方法的合理性,并利用均匀设计法定量分析了末修子母弹的性能参数对射击效能的影响。     

1999年总目次

·航天系统分析·导弹作战系统生存能力新概念汪民东　高晓光　(1—8)………………………………………………………………………导弹子母弹抛撒的均匀性指标的确定及评定方法唐雪梅　徐文旭　(1-11)…………………………………………………模型误差与轨道精度易东云　吴　翊　朱矩波　王正明　(1—15)……………………………………………………………弹体截断对弹载天线辐射特性的影响王　建　林昌禄　(2—48)………………………………………………………………武器装备研制费用分布理论模型研究吕建伟　李积源　付　黎　(3—14)………………     

子母弹对航空母舰舰载机群毁伤计算的像素仿真法

对于采用子母弹攻击航空母舰舰载机群的毁伤效果分析问题,存在相当大的难度,为对子母弹攻击舰载机群毁伤评估提供一个快速、初步的结果,在对舰载机群进行易损性分析的基础上,采用像素仿真的模拟方法,实现了多弹攻击下舰载机群毁伤效果的计算机模拟计算.仿真计算结果表明,自寻的弹道导弹携带子母式战斗部能够对航空母舰舰载机群实现一定的毁伤.     

壳体对云爆弹药燃料抛撒影响的仿真分析

建立了带壳体云爆弹药抛撒燃料过程的动力学仿真模型，分析了圆柱壳体的断裂准则。壳体材料采用Steinberg—Guinan本构方程，断裂准则采用Taylor断裂应力准则。应用Autodyn软件对内部爆炸载荷下不同壳体材料的液体燃料的抛撒进行了仿真，得到了最大压力值和最大速度值以及速度曲线，并对结果进行了分析。得出结论：提出的带壳体云爆弹药燃料抛撒的仿真模型和方法是可行的；壳体降低燃料的抛撒速度；合理选择内外壳体材料有利于提高燃料的抛撒速度。     

制导炸弹命中精度的仿真研究

命中精度是制导武器中最重要的指标之一,故此在进行半实物仿真前需要考虑影响命中精度的多种因素,进行数字仿真研究.首先简单介绍了命中精度的表示与计算,然后阐述了仿真中的几个主要模型,详细分析影响制导炸弹命中精度的各种误差干扰源,最后通过六自由度数字仿真深入分析了多种误差干扰对命中精度的影响及影响大小.仿真结果表明:影响命中精度的主要因素是GPS误差:在多种误差干扰条件下,系统具有较好的命中精度,为半实物仿真打下坚实的基础.     

The 12th International Conference on Service Systems and Service Management ICSSSM'15

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Enterprise resource planning implementation decision & optimization models

To study the uncertain optimization problems on implementation schedule, time-cost trade-off and quality in enterprise resource planning (ERP) implementation, combined with program evaluation and review technique (PERT), some optimization models are proposed, which include the implementation schedule model, the timecost trade-off model, the quality model, and the implementation time-cost-quality synthetic optimization model. A PERT-embedded genetic algorithm (GA) based on stochastic simulation technique is introduced to the optimization models solution. Finally, an example is presented to show that the models and algorithm are reasonable and effective, which can offer a reliable quantitative decision method for ERP implementation.     

A calculus for services innovation

Innovation in the services area - especially in the electronic services （e-services） domain - can be systematically developed by first considering the strategic drivers and foci, then the tactical principles and enablers, and finally the operational decision attributes, all of which constitute a process or calculus of services innovation. More specifically, there are four customer drivers （i.e., collaboration, customization, integration and adaptation）, three business foci （i.e., creation-focused, solution-focused and competition-focused）, six business principles （i.e., reconstruct market boundaries, focus on the big picture not numbers, reach beyond existing demand, get strategic sequence right, overcome organizational hurdles and build execution into strategy）, eight technical enablers （i.e., software algorithms, automation, telecommunication, collaboration, standardization, customization, organization, and globalization）, and six attributes of decision informatics （i.e., decision-driven, information-based, real-time, continuously-adaptive, customer-centric and computationally-intensive）. It should be noted that the four customer drivers are all directed at empowering the individual - that is, at recognizing that the individual can, respectively, contribute in a collaborative situation, receive customized or personalized attention, access an integrated system or process, and obtain adaptive real-time or just-in-time input. The developed process or calculus serves to identify the potential white spaces or blue oceans for innovation. In addition to expanding on current innovations in services and related experiences, white spaces are identified for possible future innovations; they include those that can mitigate the unforeseen consequences or abuses of earlier innovations, safeguard our rights to privacy, protect us from the always-on, interconnected world, provide us with an authoritative search engine, and generate a GDP metric that can adequately measure the growing knowledge economy,     

THE 8~(th) INTERNATIONAL CONGRESS ON INDUSTRIAL AND APPLIED MATHEMATICS

正August 10-14,2015Beijing,China The International Congress on Industrial and Applied Mathematics(IClAM)is the premier international congress in the field ofapplied mathematics held every four years under the auspices ofthe International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists and entrepreneurs fiom around the world will gather in Beijing,China for the 8th IClAM to be held at     

论生物系统中的功能不守恒性

根据能量守恒定律，能量一次转换所做的总功应等于输入的总能量。但在生物系统中，能量的转换是多次的，其总功之和大于系统输入的总能量，此现象称之为功能不守恒性。能量转换效率越高，功能差别越大。能量通过细胞水平的多次转换，总功可提高至2倍左右。能量通过生态系统水平多次转换，总功可提高至1．4倍左右。通过系统内各子系统能流之和称为序能，反映了系统有序性大小，它取决于系统输入总能量和能量转换效率。根据序能原理，用GDP^2／9(GDP为国内生产总值，Q为能量总输入)反映人类社会功能和效率，要比单纯用GDP更客观。绿色GDP应同时考虑使GDP^2／Q增长最大和使自然生态系统的序能最大。人的经济行为和动物的行为对策也符合序能原理。     

Dealing with Human Relations in Chinese Systems Practice

This paper is about the Wuli, Shili, Renli (WSR) systems methodology. An important concept within this, Renli, has been developed from Confucian philosophy to clarify to Chinese researchers the necessity of dealing with human relations in systems practice. At present, the only formal means of operationalizing Renli that people are exploring in China is to import from the West methods for organizing debate. However, the concept of Renli suggests that more is needed than methods alone. In particular, facilitation skills are required. It is argued that the development of facilitation skills can be enhanced if researchers can gain both theoretical and practical knowledge of group dynamics, and engage in activities of self-reflection to look at, and alter, their own roles in these dynamics and the wider sociopolitical system. There are therefore three aspects to Renli: the use of systems methods for organizing debate, the acquisition of facilitation skills, and self-reflection geared toward the development of facilitation skills and enhanced critical awareness of the politics of intervention.     

云环境中邮件服务器面向传输的优化设计

随着云计算的发展,新的应用不断涌现,但电子邮件服务依然占有着重要的地位.邮件服务器是一种I/O密集的应用.在云计算时代,越来越多的用户邮件保存在服务器端,邮件在从客户端传输到服务器端之前,邮件或者邮件的部分内容在服务器端可能已经存在.基于这种现象,提出了一种方案,通过引入计算的代价来降低通信量,从而提高邮件服务器的处理能力.对电子邮件的格式和SMTP协议进行了扩充,引入了附件和正文分离传输的模式.在邮件传输时,客户端先计算附件的散列值,并作为正文的一部分传输到服务器端,服务器端再根据散列值来判断附件是否需要传输.     

金工工艺的优化设计

运用价值工程与运筹工程理论, 在金工工艺单项设计指标优化的基础上, 对其设计指标也进行了全面优化。     

基于 SVR 的期权价格预测模型

提出了运用非参数方法SVR与改进的期权定价方法结合的期权价格预测模型.首先利用股票价格收益率的偏度和峰度对传统的期权定价方法计算出期权的价格进行修正.然后,通过引入非参数方法SVR对其结果进行拟合来减小传统参数模型的误差,并建立SVR滑动窗口预测模型.由于传统的方法不能有效的把握实际期权价格的运动趋势和非线性的特点,所以在第一阶段的预测后, 在第二阶段引入SVR来解决其非线性,进而减小误差. 最后,利用我国长虹CWB1权证以及随机10只认购权证日价格数据进行实证检验.结果表明: 在预测精度方面, 非参数方法要优于传统的参数方法,而改进后的期权定价方法比传统的方法更符合实际情况.