侵华日军暴行的铁证——日军战俘及投诚官兵控诉日军暴行档案揭秘

解放军档案馆馆藏档案中,珍藏着多件抗战期间被改造日军战俘和投诚日军官兵控诉侵华日军暴行的档案,从暴行直接参与者、见证人的视角,反思、忏悔和揭露侵华日军对中国军民所犯下的累累罪行,是研究侵华日军暴行极其重要的历史文献。70多年后的今天,公布和研究这些档案史料,对于世人了解日本侵华战争的血腥历史和日本军国主义的滔天罪行,驳斥日本右翼势力刻意篡改历史、美化侵略行径的恶毒言论,警示爱好和平的人们,具有十分重要的意义。     

被动全向声纳浮标跟踪潜艇的优化布放方法

反潜飞机利用被动全向声纳浮标可以隐蔽地跟踪潜艇,但浮标消耗量大。在满足定位精度的条件下,如何优化布放浮标以便有效增加跟踪时间是一个亟待解决的问题。首先分析了浮标探测性能和浮标群相对位置对定位精度的影响,得到浮标布放的五种基本原则;然后结合水下目标跟踪技术提出了两种用被动全向声纳浮标跟踪潜艇的优化布放方法:一种是利用遗传算法来优化每一枚浮标的布放位置,另一种是将一批次投放2-4枚浮标的多维优化问题简单转换成一维优化问题来确定浮标的布放位置。最后仿真计算了这两种方法的跟踪性能及浮标消耗量。仿真结果表明,两种优化布放方法均能满足跟踪要求,前者的浮标消耗量比后者略少,但后者的投放批次少很多,有利于减少人员的工作量。     

Deterministic and stochastic scheduling with teamwork tasks

We study a class of new scheduling problems which involve types of teamwork tasks. Each teamwork task consists of several components, and requires a team of processors to complete, with each team member to process a particular component of the task. Once the processor completes its work on the task, it will be available immediately to work on the next task regardless of whether the other components of the last task have been completed or not. Thus, the processors in a team neither have to start, nor have to finish, at the same time as they process a task. A task is completed only when all of its components have been processed. The problem is to find an optimal schedule to process all tasks, under a given objective measure. We consider both deterministic and stochastic models. For the deterministic model, we find that the optimal schedule exhibits the pattern that all processors must adopt the same sequence to process the tasks, even under a general objective function GC = F(f₁(C₁), f₂(C₂), … , f_n(C_n)), where f_i(C_i) is a general, nondecreasing function of the completion time C_i of task i. We show that the optimal sequence to minimize the maximum cost MC = max f_i(C_i) can be derived by a simple rule if there exists an order f₁(t) ≤ … ≤ f_n(t) for all t between the functions {f_i(t)}. We further show that the optimal sequence to minimize the total cost TC = ∑ f_i(C_i) can be constructed by a dynamic programming algorithm. For the stochastic model, we study three optimization criteria: (A) almost sure minimization; (B) stochastic ordering; and (C) expected cost minimization. For criterion (A), we show that the results for the corresponding deterministic model can be easily generalized. However, stochastic problems with criteria (B) and (C) become quite difficult. Conditions under which the optimal solutions can be found for these two criteria are derived. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

基于时滞的现代空防对抗兰彻斯特方程模型

针对现代战争中空防对抗过程的复杂,分析了现代作战条件下空袭与防空作战的主要特点,建立了基于时滞的现代空防对抗兰彻斯特方程模型,给出了该模型参数的求取方法,并进行了算例仿真分析,得到了有价值的仿真结果,为现代空防与防空作战提供了指导。     

The bottleneck problem with minimum quantity commitments

Given an edge‐distance graph of a set of suppliers and clients, the bottleneck problem is to assign each client to a selected supplier minimizing their maximum distance. We introduce minimum quantity commitments to balance workloads of suppliers, provide the best possible approximation algorithm, and study its generalizations and specializations. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2006     

信息化车辆装备试验场建设探析

本文主要阐述了建设信息化车辆装备试验场的必要性、基本概念、基本特点与建设的基本途径,旨在为我军轮式车辆装备试验场的信息化建设提供参考。     

军工企业转型问题中的三个不等式

在当前鼓励民营资本进入军品市场,参与军工企业的改组改造这一政策背景下,分析了当前军工企业转型中的竞争与管制、姓"军"与姓"民"、法制与法治等三对辩证关系,澄清了对民营资本参与军工企业改组改造这一举措的模糊认识,对更好地推进优质民营企业参与军工建设有现实意义。     

硫二甘醇及其相关氧化产物的硅烷化衍生反应条件优化及应用

研究了衍生气相色谱法测定芥子气的降解产物硫二甘醇、硫二甘醇亚砜和硫二甘醇砜的方法,并对影响衍生反应的溶剂、温度、时间和衍生试剂用量进行了优化,该法操作简便、灵敏度高。     

甲基三硫代膦酸二乙酯合成反应液的气相色谱-质谱分析

在OPCW第18次水平考试土样中检测到一未知化合物,经多种分析技术测定,判断可能是甲基三硫代膦酸二乙酯．对合成甲基三硫代膦酸二乙酯的反应液进行了气相色谱一质谱测定,并对此反应液中的部分产物进行了质谱解析．     

复合材料组合梁的分布参数传递函数法分析模型

应用分布参数传递函数法分析了复合材料组合梁在轴压载荷作用下的振动与稳定性问题。通过引入对偶变量，利用Ｌｅｇｒｅｎｄｒｅ 变换和Ｌａｐｌａｃｅ 变换，建立了可进入Ｈａｍ ｉｌｔｏｎ 体系的混合能量变分原理，并推导出了结构在复频域内的状态空间控制方程， 从而得到了任意边界条件下组合梁振动与稳定性问题的传递函数精确解。分析了一阶和高阶横向剪切变形、转动惯量、细长比、材料各向异性等多种因素对组合梁固有频率和屈曲载荷的影响。文中最后给出了数值算例， 验证了本方法的有效性和适应性。