Monte Carlo calculations on transmutation of plutonium and minor actinides of pebble bed high temperature reactor

The paper aimed to maximize the fuel burnup performance of plutonium and minor actinides fueled pebble bed high temperature reactor (PBMR-400). The PBMR-400 was designed as a reference core. The neutronic calculations were performed by the code combination MCNP-ORIGEN-MONTEBURNS. In this study, neutronic performances of three different types of nuclear fuels (Reactor Grade Plutonium – RGPu; Weapon Grade Plutonium – WGPu and Minor Actinides – MAs) combined with natural uranium were conducted in a PBMR-400 full core. The neutronic performances were compared with the original uranium fuel designed for this reactor. Neutronic calculations showed that 9.6 wt % enriched uranium has a core effective multiplication factor (k_eff) of 1.2395. Corresponding to this k_eff values the natural UO₂/RG-PuO₂; natural UO₂/WG-PuO₂ and natural UO₂/MAO₂ mixture were found 70%/30%, 76%/24% and 63%/37%, respectively. The operation times were computed as ∼2000, ∼2500 and 1400 days whereas, the corresponding burnup values were obtained as ∼163 000, ∼194 000 and ∼116 000 MWD/T, respectively, for end of life k_eff set equal to 1.08.     

Technical and institutional factors in the emergence of project management

This paper explores the fundamental question of why the practice and discipline of project management emerged during the 1940s through the 1960s in the United States. Although projects have been around for millennia, not until the middle of the 20th century in the U.S. military–industrial–academic complex did project management become formalized in institutional processes and as an academic discipline. The paper argues that technical complexity and novelty were the primary factors driving project management and its engineering counterpart systems engineering, as a new organizational form. Institutional factors such as the need for legal separation between government and industry created important secondary effects that drove the particular forms in which project management evolved. This paper uses examples from large scale, complex projects of the 1940s through 1960s in the aerospace and computing industries to tease out the fundamental technical and institutional factors that led to the emergence of project management in these two key American industries during this period.     

A comprehensive survey on computer vision based concepts,methodologies, analysis and applications for automatic gun/knife detection

The ability to detect gun and gun held in hand or other body parts is a typical human skill. The same problem presents an imperative task for computer vision system. Automatic observer independent detection of hand held gun or gun held in the other body part, whether it is visible or concealed, provides enhance security in vulnerable places and initiates appropriate action there. Compare to the automatic object detection systems, automatic detection of gun has very few successful attempts. In the present scope of this paper, we present an extensive survey on automatic detection of gun and define a taxonomy for this particular detection system. We also describe the inherent difficulties related with this problem. In this survey of published papers, we examine different approaches used in state-of-the-art attempts and compare performances of these approaches. Finally, this paper concludes pointing to the possible research gaps in related fields.     

物联网技术对军事电子信息系统发展的影响和思考

叙述了物联网技术对军事电子信息系统发展作用和影响,以及建立物联网武器需求体系的重要性和发展物联网武器需要重视的几个关键技术问题。提出了研究、开发和应用国产软硬件产品和技术的重要性。     

现代自动武器数字化设计制造流程研究

探讨了现代自动武器数字化设计制造的工作模式和流程,为实现数字化产品设计、仿真分析、工艺设计、工装设计、产品装配、检验检测等在自动武器数字化协同平台下的并行与协同提供了参考。对自动武器数字化设计制造协同平台集成关系进行分析,从各阶段的工作内容、参与人员和输入输出等方面与自动武器传统模式进行对比,分析了数字化设计制造对工作模式、组织结构等产生的革命性变化,举例说明了自动武器数字化设计制造协同平台的主要运行过程,为自动武器数字化设计制造的实施与推动提供了参考。     

武器系统发射动力学CAD软件研究

从工程应用出发，采用多体系统动力学方法和软件工程基本理论，设计了一套武器系统发射动力学CAD分析软件，利用这一软件对武器系统发射过程进行了仿真计算，计算结果表明软件符合设计要求，可用于工程计算和设计。     

高技术武器与先进火炸药技术

阐述了“高技术”概念的产生和发展，指出先进火炸药技术是军事高技术的一个重要组成部分，是高技术武器发展的物质基础。文中强调先进火炸药技术可为高技术武器实现“远、准、隐、钝、小”等特性提供有力技术支撑，并就火炸药技术重点研究方向提出了建议。     

武器装备体系作战效能评估方法分析

界定武器装备体系及其作战效能的概念，从评估的主客观程度、得出评估结果的基本途径、评估过程、评估时机4个不同角度对作战效能评估方法进行分类，并对各类方法进行简要比较。在此基础上分析5种相对常用的评估方法（试验统计法、SEA法、ADC法、指数法、计算机仿真法），为效能评估方法的选用提供了依据。     

电磁脉冲武器对电子对抗装备损伤模式分析

在现代电子战中,电磁环境日益恶劣,强电磁脉冲对电子对抗装备工作的可靠性和安全性构成了极其严重的威胁,产生的破坏效应已不容忽视。本文简要介绍了电磁脉冲产生的基本原理及特性;对电磁脉冲武器的杀伤破坏因素及威胁机理进行分析;建立了电磁脉冲弹的效能模型;研究了电磁脉冲武器对电子对抗装备的损伤模式以及提出了减少电磁脉冲损伤的几点措施。     

基于Web服务的武器系统建模与仿真

论述了基于Web服务的武器系统建模与仿真的结构及方法,目的在于促进可扩展建模与仿真框架XMSF在武器装备仿真中的应用.依照B/W/D三层体系结构,确定了应用层、服务层与资源层软件的主要组成.在对用户界面、Web服务器、仿真服务器、数据库及模型库接口的主要功能及开发方案进行分析的基础上,提出了建立武器系统论证支持、试验设计与鉴定、作战使用等仿真应用服务的实现方法,并应用于某型武器系统的研究.仿真结果表明,Web服务可以提高模型的可重用性及互操作性,为开展武器装备建模与仿真提供了新的技术途径.