近代中国留日陆军士官生人数考究

据笔者所看到的资料，关于近代中国留日陆军士官生的人数，常出现不一致，而留日陆军士官生在近代中国的地位与作用日益得到学术界的关注。所以，本文拟从相关史料的来源、人数统计所要说明的一些特殊情况和其人数变化所反映的中日关系等方面进行梳理与考证。     

复杂作战网络建模及模型特征

针对传统网络模型难以反映多军种联合作战特点的问题,在传统树状网络拓扑模型的基础上加入了横向连接,构建了一个基于复杂网络的联合作战网络模型。该模型打破了"以平台为中心"的作战样式,体现了信息化条件下联合作战的特点。定义了网络模型的若干参数,通过对仿真计算结果的统计,分析了该模型的特征参数,得出该作战网络具有规则网络和随机网络的特性,且模型从整体上体现出树状层次性、无标度性和小世界特性。     

On the exponentially weighted moving variance

MacGregor and Harris (J Quality Technol 25 (1993) 106–118) proposed the exponentially weighted mean squared deviation (EWMS) and the exponentially weighted moving variance (EWMV) charts as ways of monitoring process variability. These two charts are particularly useful for individual observations where no estimate of variability is available from replicates. However, the control charts derived by using the approximate distributions of the EWMS and EWMV statistics are difficult to interpret in terms of the average run length (ARL). Furthermore, both control charting schemes are biased procedures. In this article, we propose two new control charts by applying a normal approximation to the distributions of the logarithms of the weighted sum of chi squared random variables, which are respectively functions of the EWMS and EWMV statistics. These new control charts are easy to interpret in terms of the ARL. On the basis of the simulation studies, we demonstrate that the proposed charts are superior to the EWMS and EWMV charts and they both are nearly unbiased for the commonly used smoothing constants. We also compare the performance of the proposed charts with that of the change point (CP) CUSUM chart of Acosta‐Mejia (1995). The design of the proposed control charts is discussed. An example is also given to illustrate the applicability of the proposed control charts. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2009     

UML在水下输送艇指挥控制系统分析中的应用

在对水下输送艇指挥控制系统进行需求描述的基础上,遵循统一建模语言UML系统分析的一般过程,分别建立了系统的用例模型、静态模型、行为模型、交互模型和实现模型,并对所建模型逐一进行了测试,测试结果表明了该模型建立的正确性,为下一步系统软件的设计和实现奠定了基础。     

围绕"三个确保"加强部队思想政治建设的着力点

紧紧围绕"三个确保"时代课题,大力加强新形势下部队思想政治建设,要强化政治意识,切实把高举旗帜、听党指挥作为思想政治建设的根本出发点;强化大局意识,切实把确立和巩固科学发展观重要指导地位作为思想政治建设的首要任务;强化责任意识,切实把培育当代革命军人核心价值观作为思想政治建设的重要基础工程;强化使命意识,切实把围绕中心、服务打赢作为思想政治建设的核心要求;强化创新意识,切实把解决问题、丰富内容作为思想政治建设的最终落脚点.     

非线性最小二乘算法在双基地雷达目标定位中的应用

双基地雷达的目标定位解是一个非线性优化问题,引入了高斯-牛顿迭代法解非线性最小二乘方程组,为了提高迭代的收敛性和目标位置解的准确性,采用精度最高的一组测量子集单元解算出的定位解作为迭代初始值,并充分利用了所有的观测信息.仿真结果表明,采用该种算法迭代次数少,比简化加权最小二乘算法(SWLS)有更准确的目标定位解,从而使得整个受控区域内的定位精度有较大提高,定位性能得到优化和改善.     

Optimizing natural gas pipeline transmission with nonuniform elevation: A new initialization approach

In this paper, we develop an iterative piecewise linear approximation approach with a novel initialization method to solve natural gas pipeline transmission problems with the nonuniform network elevation. Previous approaches, such as energy minimization methods, cannot be applied to solve problems with the nonuniform network elevation because they exclude pressure range constraints, and thus provide solutions far from optimum. We propose a new initialization model that considers pressure range constraints and improves the optimality of the solutions and the computational efficiency. Furthermore, we extend the energy minimization methods and provide the necessary conditions under which the extended methods operate in networks with the nonuniform elevation. We test the performances of the methods with previously reported pipeline networks from the literature, with the open data set GasLib, and with our industrial collaborator. The initialization approach is shown to be more efficient than the method with fixed initial breakpoints. The newly proposed initialization approach generates solutions with a higher accuracy than the extended energy minimization methods, especially in large‐size networks. The proposed method has been applied to natural gas transmission planning by the China National Petroleum Corporation and has brought a direct profit increase of 330 million U.S. dollars in 2015‐2017.     

复杂相似标的招投标模型分析研究

分析了信息在招投标过程中的应用,研究了相似标的在招投标管理中的机制模型,实现了招投标管理中复杂标的的机制设计。最后,对模型的应用进行了分析研究,证明了该模型可以有效提高招投标效率。     

新疆初中生学校生活满意度调查研究

本研究采用自编调查问卷对409名新疆S市初中生进行学校生活满意度调查,结果表明：（1）初中生的学校生活满意度总体状况较高,但自我满意度和学习环境满意度较低;（2）年级、成绩、学校或班级活动参与程度和家庭经济状况是影响初中生学校生活满意度的主要人口统计学变量,其中初一年级学生的教学满意度和学习环境满意度高于其他两个年级的初中生,成绩优秀的学生的同学关系满意度、自我满意度和家庭满意度明显高于成绩中等和较差的学生,经常参加活动的学生的同学关系满意度、自我满意度和学习环境满意度高于偶尔和从来不参加活动的学生。最后,研究提出提高初中生学校生活满意度的相关对策。     

雷达电子战环境仿真支撑软件设计与实现

利用专业仿真软件,从信号级角度实现对雷达电子战作战效果的建模和仿真计算,得到功能级仿真所需要的指标参数,并将相应的功能进行封装,而作为功能级仿真的一个支撑平台,仿真结果表明该方法可行,结果可信.