大力推进新时代中国特色科技兴军

习主席站在时代发展与战略全局的高度,着眼军队建设全局,深刻阐述了科技兴军在强军征程中的重要作用,明确了科技兴军的举措抓手,丰富和发展了新时代党的强军思想理论体系。必须毫不动摇地坚持走中国特色科技兴军之路,为实现党在新时代的强军目标提供强有力的支撑。     

基于窗口预测匹配的序列图像点目标轨迹检测算法

序列图像中运动点目标轨迹的实时检测算法,是目标识别、实时跟踪处理系统中的关键算法之一。在分析不同层次处理方法的基础上,给出了一种基于预测、窗口匹配的点轨迹预测—匹配检测算法,并根据仿真实验的效果,指出此算法可有效地对低信噪比序列图像运动点目标轨迹进行实时检测,具有多目标轨迹检测能力。     

Dynamic inventory and pricing models for competing retailers

We address infinite‐horizon models for oligopolies with competing retailers under demand uncertainty. We characterize the equilibrium behavior which arises under simple wholesale pricing schemes. More specifically, we consider a periodic review, infinite‐horizon model for a two‐echelon system with a single supplier servicing a network of competing retailers. In every period, each retailer faces a random demand volume, the distribution of which depends on his own retail price as well as those charged by possibly all competing retailers. We also derive various comparative statics results regarding the impact several exogenous system parameters (e.g., cost or distributional parameters) have on the equilibrium decisions of the retailers as well as their expected profits. We show that certain monotonicity properties, engrained in folklore as well as in known inventory models for centralized systems, may break down in decentralized chains under retailer competition. Our results can be used to optimize the aggregate profits in the supply chain (i.e., those of the supplier and all retailers) by implementing a specific wholesale pricing scheme. © 2003 Wiley Periodicals, Inc. Naval Research Logistics, 2004.     

Dual sourcing: Responsive hedging against correlated supply and demand uncertainty

This article analyzes dual sourcing decisions under stochastically dependent supply and demand uncertainty. A manufacturer faces the trade‐off between investing in unreliable but high‐margin offshore supply and in reliable but low‐margin local supply, where the latter allows for production that is responsively contingent on the actual demand and offshore supply conditions. Cost thresholds for both types of supply determine the optimal resource allocation: single offshore sourcing, single responsive sourcing, or dual sourcing. Relying on the concept of concordance orders, we study the effects of correlation between supply and demand uncertainty. Adding offshore supply to the sourcing portfolio becomes more favorable under positive correlation, since offshore supply is likely to satisfy demand when needed. Selecting responsive capacity under correlated supply and demand uncertainty is not as straightforward, yet we establish the managerially relevant conditions under which responsive capacity either gains or loses in importance. Our key results are extended to the broad class of endogenous supply uncertainty developed by Dada et al. [Manufact Serv Operat Mange 9 (2007), 9–32].© 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012     

基于能量度量的星载AIS信号自适应码元同步抽取算法

基带信号码元同步抽取是目前星载AIS(Automatic Identification System)信号处理中的一个难点问题,针对过零检测和迟门早门等现有算法存在的不足,提出了基于能量度量的基带信号自适应码元同步抽取算法。将基带信号根据采样率和码速率的比值分割成相同的段的组合,之后分别计算每个段内相应样点的能量度量,最后选择使能量度量最大时的样点集作为最优同步抽取样点,该样点集具有最大信噪比。仿真结果验证了该算法误码率优于过零检测和迟门早门算法。     

关键循环到粗粒度可重构体系结构的存储感知映射

针对已有工作面向粗粒度可重构结构(CGRA)研究循环映射的不足,提出一种新颖的存储感知的关键循环映射方法 MALP。该方法定义RCP_CGRA体系结构模型并阐述关键循环到CGRA的映射问题,通过引入结合数组分簇的多面体数据域划分方法进行循环存储分析,根据分析结果,结合体系结构资源约束实现了循环的有效映射。实验结果表明,与已有的方法相比,MALP方法能够快速分析存储需求并有效降低循环映射的资源占用率,提高数据吞吐量,进一步提升了CGRA上循环映射的性能。     

Screening and selection procedures with control variates and correlation induction techniques

We consider the problem of identifying the simulated system with the best expected performance measure when the number of alternatives is finite and small (often < 500). Recently, more research efforts in the simulation community have been directed to develop ranking and selection (R&S) procedures capable of exploiting variance reduction techniques (especially the control variates). In this article, we propose new R&S procedures that can jointly use control variates and correlation induction techniques (including antithetic variates and Latin hypercube sampling). Empirical results and a realistic illustration show that the proposed procedures outperform the conventional procedures using sample means or control variates alone. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012     

对当前消防部队信息化建设的思考

目前消防部队信息化建设取得了初步成效,但与部队需求还存在一定差距,存在着对信息化建设认识不够高、信息化应用不深入、专业人才偏少、人员素质偏低、投入资金不足等问题,并针对存在的问题提出了解决对策。     

恒压变频控制设备在消防水灭火系统中的应用

分析了传统消防水灭火系统存在易锈死难改造等问题,介绍了恒压变频供水系统的基本工作原理和设计思路,论证了恒压变频供水系统在消防水灭火系统中应用的可行性,研究了将恒压变频控制设备应用到消防水灭火系统中应注意的几个问题,为改进消防水灭火系统提供了又一方法。     

航站楼消防设计若干问题探讨

消防设计的合理性对于航站楼安全运行具有重要意义。目前,国内尚未出台航站楼设计防火规范,因此,航站楼消防设计还处于探索和积累经验的阶段。介绍了航站楼消防设计四个阶段、重要设计难点,结合工程实际问题,对消防设计思路系统化进行了梳理,力图为设计者提供少许帮助。