大型稀疏线性代数迭代库在YH 机上的高效实现

本文讨论了大型稀疏线性代数方程组的迭代算法、加速方法、存贮技术及并行算法。结合向量机特点,采取有效程序优化措施,开发研制了标量和向量库程序。在ＹＨ系列机上试算结果表明：大型稀疏线性代数向量迭代库比标量迭代库速度有较大提高。当Ｎ≥１００时,在ＹＨ─１机上加速比约２～８;在ＹＨ─２机上约２～７;当迭代次数增加时,加速比提高更明显;库中共轭梯度（ＣＧ）加速方法能有效地加快收敛,可减少迭代次数一半以上。     

坦克火控系统处理射表的两种算法

射表的处理速度是火控系统的关键,提高射表的处理速度能够缩短整个系统的反应时间。本文对此提出了两种算法,并作了比较。     

建筑构件的火灾危险性评估

火灾中,起火建筑的内部构件以及相邻建筑物的外部构件都要受到火灾高温及火焰热的作用。本文定量评估了威胁上述建筑构件的火灾因素．旨在为人们综合考虑采取合理的防火技术措施提供理论依据。     

四元数在火控中的应用

介绍了四元数的定义、代数运算、三角形式和指数形式以及球面表示形式;综述了四元数在刚体姿态控制,计算机三维图像旋转,彩色图像处理和信号处理分析等实际应用中表示的物理含义,着重探讨了四元数理论在火控领域中应用方法,并对比传统欧拉角火控模型,分析了应用四元数火控模型的优点。最后从理论上得出,四元数理论方法在常规兵器火控系统有广阔的应用前景。     

人民空军战略的发展演变及规律

新中国印年来，空军战略发展演变可划分为三个基本阶段：一是从1949～1956年，空军建立初期，担负支援渡海作战、准备解放台湾的重任，在战略上注重进攻力量建设，属于初级的攻防兼备型战略。二是从1957～1999年，作战任务发生变化，由支援渡海作战变为维护国家领空安全，建立的是国土防空型空军，属于防空型战略。三是1999年以后，随着世界新军事变革和国家利益拓展的要求，空军由国土防空型转变为攻防兼备型，属于攻防兼备型战略。     

The incentive effect of acceptance sampling plans in a supply chain with endogenous product quality

This article studies a firm that procures a product from a supplier. The quality of each product unit is measured by a continuous variable that follows a normal distribution and is correlated within a batch. The firm conducts an inspection and pays the supplier only if the product batch passes the inspection. The inspection not only serves the purpose of preventing a bad batch from reaching customers but also offers the supplier an incentive to improve product quality. The firm determines the acceptance sampling plan, and the supplier determines the quality effort level in either a simultaneous game or a Stackelberg leadership game, in which both parties share inspection cost and recall loss caused by low product quality. In the simultaneous game, we identify the Nash equilibrium form, provide sufficient conditions that guarantee the existence of a pure strategy Nash equilibrium, and find parameter settings under which the decentralized and centralized supply chains achieve the same outcome. By numerical experiments, we show that the firm's acceptance sampling plan and the supplier's quality effort level are sensitive to both the recall loss sharing ratio and the game format (i.e., the precommitment assumption of the inspection policy). © 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013     

Dynamic regulation on innovation and adoption of green technology with information asymmetry

This study investigates a regulator's dynamic policy to motivate firms' research on and adoption of green technology. In the proposed model, a firm makes unobservable efforts and can hide the technology's arrival from the regulator to avoid adoption costs. We find that the optimal policy follows a simple structure and induces part-time efforts, rather than the maximal effort reported in previous studies. In particular, the regulator should offer no subsidy before the arrival of a technology report, provide a one-time subsidy contingent upon that report, and always set a termination deadline. At the deadline, the firm is forced to select an external option that is associated with social costs. The optimal report-based subsidy decreases with time. Under the optimal policy, the firm works until an effort deadline, makes no effort thereafter, and reports the technology as soon as it arrives. This study also characterizes the necessary and sufficient conditions under which the optimal policy reduces to one that leads, in terms of throughout time, to effort that is maximal or minimal. Our results indicate that policymakers should implement a policy that compensates firms more in the present and less in the future.     

浅谈质量工作长效机制执行力与质量管理体系运行的有效性

本文从发挥领导作用,提高质量意识,强化企业对质量管理体系长效机制入手,对建立健全质量管理体系文件,使之具有可操作性和可检查性,确保质量管理体系和质量管理工作有效运行进行了论述。     

数字化激光弹丸速度测量技术研究

数字化激光光幕将互相关算法应用到弹丸初速测量领域,明显提高了在复杂干扰环境下弹丸速度测量的精度和可靠性。实现了一套测量系统满足所有平射弹丸速度测量需求的目的。     

战区弹道导弹多层拦截方法

针对战区弹道导弹拦截战法中的"发射-评估-发射"策略,以拦截器消耗量最少、系统稳健性最好为优化目标,建立了多目标线性规划数学模型,并进行了仿真,证明了这种拦截策略的优越性;也对导弹防御体系的最佳结构进行了论证.给出了计算方法、数据及结论,具有重要的指导意义.