基于最小误差模型估计的地空导弹飞行试验数据相容性检验

提出了基于递推最小模型误差估计(RMMEE)的地空导弹飞行试验数据相容性检验的方法,该方法采用导弹位置和弹体角位移测量,不仅能在线重构六自由度弹道参数,而且能估计捷联惯导的动态误差,从根本上克服了Klein模型的局限性。该方法对导弹速度、位置估值的初值不敏感,即使存在较大的捷联惯导动态误差,仍具有良好的收敛性和稳健性。     

指数型产品可靠性验收试验的一种贝叶斯方法

采用贝叶斯方法 ,利用大量的历史数据和工程技术人员的丰富经验确定先验分布 ,制定出验收试验的一种新方案 .按照这一方案 ,在确保产品质量的前提下 ,可大大节省试验时间 ,从而得到十分可观的经济效益 .     

小型直流发电机输出特性自动测试系统

提出了一种基于PC机的小型直流发电机输出特性自动测试系统 ,该系统利用直流变送器测量发电机输出功率 ,并给出了试验结果。     

随机相位信号检测模型及其在移动通信保密系统中的应用

通过对随机相位信号检测模型的分析 ,介绍了一种基于该检测模型的对于经FSK调制的随机相位信号的检测方法 ,并阐述了该方法在一种蜂窝式移动通信保密系统中的应用     

Minimizing makespan on a single batch processing machine with nonidentical job sizes

We deal with the problem of minimizing makespan on a single batch processing machine. In this problem, each job has both processing time and size (capacity requirement). The batch processing machine can process a number of jobs simultaneously as long as the total size of these jobs being processed does not exceed the machine capacity. The processing time of a batch is just the processing time of the longest job in the batch. An approximation algorithm with worst‐case ratio 3/2 is given for the version where the processing times of large jobs (with sizes greater than 1/2) are not less than those of small jobs (with sizes not greater than 1/2). This result is the best possible unless P = NP. For the general case, we propose an approximation algorithm with worst‐case ratio 7/4. A number of heuristics by Uzosy are also analyzed and compared. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 226–240, 2001     

Case‐based reasoning and improved adaptive search for project scheduling

Most scheduling problems are notoriously intractable, so the majority of algorithms for them are heuristic in nature. Priority rule‐based methods still constitute the most important class of these heuristics. Of these, in turn, parametrized biased random sampling methods have attracted particular interest, due to the fact that they outperform all other priority rule‐based methods known. Yet, even the “best” such algorithms are unable to relate to the full range of instances of a problem: Usually there will exist instances on which other algorithms do better. We maintain that asking for the one best algorithm for a problem may be asking too much. The recently proposed concept of control schemes, which refers to algorithmic schemes allowing to steer parametrized algorithms, opens up ways to refine existing algorithms in this regard and improve their effectiveness considerably. We extend this approach by integrating heuristics and case‐based reasoning (CBR), an approach that has been successfully used in artificial intelligence applications. Using the resource‐constrained project scheduling problem as a vehicle, we describe how to devise such a CBR system, systematically analyzing the effect of several criteria on algorithmic performance. Extensive computational results validate the efficacy of our approach and reveal a performance similar or close to state‐of‐the‐art heuristics. In addition, the analysis undertaken provides new insight into the behaviour of a wide class of scheduling heuristics. © 2000 John Wiley & Sons, Inc. Naval Research Logistics 47: 201–222, 2000     

地(舰)空导弹测试系统维修性设计的实践与思考

导弹测试系统是由多种设备组合而成,其功能是对导弹进行综合测试。导弹测试系统是多次反复使用的设备,维修性是其重要设计指标之一。从导弹测试系统维修性设计指标要求出发,就导弹测试系统维修性设计的有关问题进行论述,提出了设计中应重视的问题。     

美军装备试验鉴定发展历程分析及启示

美军装备试验经历近百年的发展,已形成较为成熟的试验鉴定模式和管理评价体制,试验鉴定能力也处于世界领先水平.美军在装备发展历程中的经验做法十分值得学习和借鉴.本文分析了美军装备试验鉴定发展历程和特点,研究了其试验组织结构的科学构成和运行机制,归纳总结了美军装备试验发展的客观规律和科学经验.在此基础上,得到了顺应装备发展趋...     

基于网络的高校教学案例资源管理系统设计与实现

结合某高校案例教学的实际需求,研究设计了基于.NET平台三层架构的教学案例资源管理系统,实现了灵活的管理授权、可定制分级审核、实时案例编辑和简单实用的案例教学互动等功能,具有较强的可移植性、扩充性和可维护性,在实际应用中获得了良好的效果。     

武警总队应急车辆故障诊断系统研究

将人工神经网络和基于案例推理技术结合用于车辆故障诊断系统中,构建了ANN与CBR结合模型,阐述了各子系统的基本功能及相互关系,并对关键技术进行了详细解释。实例诊断表明,ANN和CBR方法的结合有效地弥补了它们各自的缺陷,提高了应急条件下车辆的维修保障能力。