价值工程的产生及其应用综述

本文回顾了价值工程的产生和发展历史,评述了国内外价值工程的发展历程和主要经验,分析了价值工程应用中存在的主要问题。     

带费用的校对问题的最优停止

本文用逼近的方法给出了校对问题中Poisson模型与二项模型的最优停止规则,并得出了二项模型中参数π具有先验分布β(a,b),a>0,b>0时报酬序列的结构。     

防空C~3I通信子网信息模型

分析了防空Ｃ３Ｉ系统通信子网数据到达、处理、传递的随机分布规律及其影响的诸因素,并提出了数据到达的ＡＲ（１）随机序列模型。分析所得出的结论,对建立仿真系统及通信子网性能分析有参考价值。     

教材印量决策模型研究

根据院校教材的需求特点及自印教材的费用发生特点,研究提出了３种适合于院校自印教材印量决策的随机库存模型．所提出的模型实用性强,对节省院校教材保障经费将起到直接的作用．     

CDEST专家系统工具及其与数据库的接口

介绍、推荐了一种新的专家系统工具──ＣＤＥＳＴ（ＣｈｉｎｅｓｅＤｉａｇｎｏｓｉｓＥｘｐｅｒｔＳｙｓｔｅｍＴｏｏｌ）,并给出了ＣＤＥＳＴ与数据库接口的详细实现方法。     

对话式电路设计系统中电路图构成及光笔检索的一种方法

本文讨论利用数据结构中所存贮的连接点的行、列定位信息,使电路图重显或平移、放大以及对电路图进行光笔检索和修改的一种算法。     

Combined variance reduction techniques in fully sequential selection procedures

In the past several decades, many ranking‐and‐selection (R&S) procedures have been developed to select the best simulated system with the largest (or smallest) mean performance measure from a finite number of alternatives. A major issue to address in these R&S problems is to balance the trade‐off between the effectiveness (ie, making a correct selection with a high probability) and the efficiency (ie, using a small total number of observations). In this paper, we take a frequentist's point of view by setting a predetermined probability of correct selection while trying to reduce the total sample size, that is, to improve the efficiency but also maintain the effectiveness. In particular, in order to achieve this goal, we investigate combining various variance reduction techniques into the fully sequential framework, resulting in different R&S procedures with either finite‐time or asymptotic statistical validity. Extensive numerical experiments show great improvement in the efficiency of our proposed procedures as compared with several existing procedures.     

一种面向复杂地理空间栅格数据处理算法并行化的任务调度方法

随着并行计算技术的成熟,地理空间栅格数据处理算法的并行化研究成为新的热点。聚焦于处理流程包含多个计算步骤的复杂地理空间栅格数据处理算法,基于空间计算域理论,提出了一个随着算法处理流程而动态变化的任务调度方法。实验证明,该方法在算法流程的每一个计算步都会调整任务分组方案,因此相比于传统任务调度方法,任务调度的负载均衡效果更好,并行算法程序的运行时间更短。     

Shock model in Markovian environment

A Markov modulated shock models is studied in this paper. In this model, both the interarrival time and the magnitude of the shock are determined by a Markov process. The system fails whenever a shock magnitude exceeds a pre‐specified level η. Nonexponential bounds of the reliability are given when the interarrival time has heavy‐tailed distribution. The exponential decay of the reliability function and the asymptotic failure rate are also considered for the light‐tailed case. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2005     

可变落点的再入机动飞行器姿控系统设计

基于选择的姿态反馈控制系统结构,从姿控系统稳定性能提高的角度,设计了控制系统反馈参数,以适应可变落点引起的飞行器参数变化。通过机动飞行器的六自由度飞行弹道仿真,表明所设计的姿态反馈控制系统控制效果较好,可适应预定区域内的飞行落点变化要求。