小散远部队单位疫情防控工作思考【专题】

重大疫情具有突发性强、危害性大等特点，一旦发生，极易在防疫准备不充足的小散远部队单位造成爆发。加强基层疫情防控基础建设贵在平时，势在必行。本文首先对重大疫情的特点和小散远部队单位防疫工作面临的现实困难进行了分析，并对开展新时代基层单位疫情防控工作进行了思考，最后提出了应在思想政治教育、军地联动、心理辅导和防疫效果评估等方面予以加强的小散远部队单位疫情防控工作系统框架，以期为提高部队基层防疫效率提供参考。     

Dynamic signatures and their use in comparing the reliability of new and used systems

The signature of a system with independent and identically distributed (i.i.d.) component lifetimes is a vector whose ith element is the probability that the ith component failure is fatal to the system. System signatures have been found to be quite useful tools in the study and comparison of engineered systems. In this article, the theory of system signatures is extended to versions of signatures applicable in dynamic reliability settings. It is shown that, when a working used system is inspected at time t and it is noted that precisely k failures have occurred, the vector s [0,1]^n‐k whose jth element is the probability that the (k + j)th component failure is fatal to the system, for j = 1,2,2026;,n ‐ k, is a distribution‐free measure of the design of the residual system. Next, known representation and preservation theorems for system signatures are generalized to dynamic versions. Two additional applications of dynamic signatures are studied in detail. The well‐known “new better than used” (NBU) property of aging systems is extended to a uniform (UNBU) version, which compares systems when new and when used, conditional on the known number of failures. Sufficient conditions are given for a system to have the UNBU property. The application of dynamic signatures to the engineering practice of “burn‐in” is also treated. Specifically, we consider the comparison of new systems with working used systems burned‐in to a given ordered component failure time. In a reliability economics framework, we illustrate how one might compare a new system to one successfully burned‐in to the kth component failure, and we identify circumstances in which burn‐in is inferior (or is superior) to the fielding of a new system. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2009     

基于HLA的电子战飞机作战仿真系统研究

目前电子战飞机战术使用方法仿真研究主要采用功能级仿真的方法,以雷达方程和干扰方程为理论基础,围绕侦察接收机和干扰机部分功能或部分工作参数进行建模,不能满足组建完整的"系统—系统"级作战仿真的要求,同时也达不到信号级建模仿真的精度和逼真度。针对上述问题,采用信号级仿真的方法,根据当前仿真技术的发展以及航空作战对电子战的新要求,提出并设计了基于HLA的电子战飞机作战仿真系统,并对各联邦成员的构成、开发过程以及关键技术进行了研究,最后以一个电子战飞机随队干扰作战仿真为例,系统分析了基于HLA的电子战飞机作战仿真系统的开发过程。仿真结果验证了模型和方法的有效性,可为电子战飞机作战系统作战效能的分析评估提供平台和依据,对于指导电子战飞机的战术使用具有积极意义。     

主动防护系统分布式火控平台设计与仿真

为设计和验证主动防护系统的分布式火控原理和算法，设计了主动防护系统分布式火控验证平台。根据主动防护系统的攻击原理和功能要求，构造了完整的硬件结构和软件架构，给出了详细的仿真流程，并对系统中涉及的各关键技术进行了分析和建模。最后，整个系统采用面向对象的程序设计方法和虚拟现实技术，实现了数字化的主动防护系统分布式火控仿真系统平台。该平台能够在虚拟作战场景中模拟真实的作战场景，能够有效地再现主动防护系统对目标的打击过程，也为主动防护系统的分布式火控原理验证和功能测试提供了技术手段。     

型号研制与产品数据管理

介绍了产品数据管理(PDM)的概念和基本功能,结合当前型号研制的特点和计算机信息技术应用的状况、发展,研究了型号研制产品数据管理的需求、功能及实施,为当前型号研制依靠CIMS技术实现产品数据管理提出了8条基本原则。     

Does Military Spending Nonlinearly Affect Economic Growth in South Africa?

Using annual data collected from 1988 to 2015, this study provides evidence of a non-linear relationship between military spending, economic growth and other growth determinants for the South African economy. The empirical study is based on estimates of a logistic smooth transition regression (LSTR) model and our empirical results point to an inverted U-shaped relationship between military spending and economic growth for the data. Furthermore, our empirical results suggest that the current levels of military spending, as a component of total government expenditure, are too high in the South African economy and need to be transferred towards more productive non-military expenditure in order to improve the performance of economic growth and other growth determinants.     

无源RFID系统中推断式二进制搜索算法

在现有的RFID标准中，一般标签ID都由几个不同含义区间组成。针对这种特点，提出推断式二进制防碰撞算法：在识别每个区间段的ID时，利用某个特定读写器中的前缀库推断该区间段各个位的取值，以便减少待识别标签ID的位数。同时，通过调整参数u，可以对系统可靠性进行控制。仿真实验表明，在没有新前缀出现的情况下，推断式二进制防碰撞算法能够将QT算法的识别速度提高3倍、标签平均响应次数降低3／4。     

虚拟现实系统的建模方法

采用先进的建模方法 ,开发组织和管理复杂的虚拟环境 ,不仅能够提高开发效率 ,甚至关系到项目开发的成败。研究了面向对象和面向智能体两种虚拟现实 (VR)系统设计的基本方法。