大学英语教学中翻译技巧的训练

分析了大学英语教学中忽视翻译技巧训练的问题,从语言心理学的角度,论述了翻译理论的实质和翻译技巧训练的重要性;最后讨论了教学中如何安排翻译技巧训练     

海战场信息系统和武器系统综合仿真技术研究

本文分析了海战场信息系统仿真的特点,介绍了可以应用于海战场信息系统和武器系统综合仿真的高层体系结构(HLA)技术,描述了澳大利亚国防科学与技术组织(DSTO)基于HLA技术的虚拟舰艇概念和潜在的应用,以及虚拟舰艇结构和层次化联邦共同体概念的设计方法。     

混合现实技术在军事训练中的应用优势——以美军综合训练环境为例

随着科技手段的进步,现代战争的作战样式不断发展。信息化条件下的作战对军事训练提出了更高要求,传统的训练方法与模式亟待改进。混合现实技术的应用开辟了军事训练新模式。这种针对数据的可视化集成运用以及在其基础上开发的训练系统,通过对数据的处理利用实现了军事训练效果的有效评估。本文以美国陆军综合训练环境这一混合现实技术在军事训练中的典型应用案例作为对象,分析概述了综合训练环境的世界地形、训练模拟软件及训练管理工具三大组成部分的功能特点、架构组成,并根据混合现实技术的发展状况探析综合训练环境的应用优势,以期为军队混合现实技术在军事训练中的应用提供一定借鉴。     

基于贝叶斯混合源分离方法的声纳探测误差模型

声纳的探测误差模型是声纳仿真的核心技术。针对现有的声纳误差白噪声模型仿真逼真度低的问题,提出了基于贝叶斯混合源分离方法,建立了声纳的探测误差模型,提高了声纳误差模型的性能。与传统的白噪声仿真方法相比,基于贝叶斯混合源分离方法的声纳误差仿真模型具有较好的逼真度,可以有效地对声纳探测误差进行建模和预测。     

Capturing Contemporary Innovation: Studying IDF Innovation against Hamas and Hizballah

The question of what enables some militaries to innovate effectively is of great interest to both scholars and commanders. However, the traditional models of military innovation fail to capture the complex innovation process. This study develops a new analytical framework that examines the pressures on and incentives for military innovation in the international, civil/military, organizational, and cultural planes and uses it to evaluate Israel Defense Forces (IDF) innovation between 2000 and 2009. Based on interviews with Israeli commanders and extensive research in Israel, this work finds that the IDF struggled to innovate before the 2006 war against Hizballah, but innovated effectively after the conflict once military and civilian leaders understood threats similarly. New models are needed to analyze the contemporary multi-dimensional innovative process.     

基于路径规划的敏捷卫星姿态机动反馈控制方法

为了避免奇异状态,单框架控制力矩陀螺(SGCMG)操纵律要求框架角进行快速转动,需要消耗较多的能量,并会对SGCMG和卫星系统带来一系列潜在危害。针对该问题,提出基于路径规划和反馈控制相结合的姿态机动控制方法。根据固定时间姿态机动的任务需求,以能量为优化指标,采用伪谱法优化机动路径并回避奇异状态;将最优控制量作为参考数输入,并利用基于系统限制状态的反馈控制方法消除不确定性和扰动的影响。反馈控制基于名义输入进行数值积分得到的预测状态量,并与期望终端状态比较形成控制误差信号。该方法将卫星和SGCMG作为整体规划姿态运动,能够有效避免奇异状态。结合工程实际,在闭环控制仿真中考虑了卫星角速度和SGCMG框架角的初始偏差。仿真结果表明:本文算法能够有限避免奇异状态,且能消除初始姿态角速度和框架角不确定的影响。     

基于波导干涉条纹的目标距离特征量提取方法

浅海波导中目标辐射噪声LOFAR谱图存在明暗相间的干涉条纹,从中可以提取出目标距离特征量信息,它反映了目标运动过程中的距离变化率。低信噪比情况下,条纹特征不够清晰,提取的距离特征量值精度会降低。提出了一种边缘定向增强型偏微分方程去噪方法,对LOFAR谱图进行处理,使条纹特征更加明显。海试数据处理结果表明,去噪处理后提取出的距离特征量精度明显提高。为满足实时性需要,提出了基于CUDA的距离特征量实时处理方法,实验结果表明能大幅提高算法运行速度。     

新型装备作战指挥信息系统军事需求论证的反向分析方法

基于新型装备作战指挥信息系统构成及功能,提出了"体系作战效果-作战运用方式-关键能力需求-需求方案决策优化"的军事需求映射机制,构建了新型装备作战指挥信息系统军事需求论证的反向分析总体框架,并分析反向分析方法的内容和设计了流程。该研究对新型作战力量指挥信息系统的顶层设计和工程建设具有一定的价值,对于开展其他复杂系统的体系结构研究也具有借鉴意义。     

基于HLA的维修保障仿真系统设计研究

针对作战单元维修保障能力评估的需求,提出建立基于HLA的维修保障仿真分析平台。在分析维修保障系统构成和运行过程的基础上,阐述了仿真联邦的设计思想和构建方法,并进行了系统设计。根据实际系统的运行逻辑开发了联邦剧情,基于HLA的开发和执行过程模型构建了联邦系统框架,设计了联邦对象模型,并指出了仿真实现的关键技术所在。     

Development of cost effective personnel armour through structural hybridization

The objective of the present study is to develop cost effective thermoplastic hybrid laminate using Dyneema® HB50 and Tensylon®HSBD 30A through structural hybridization method. Laminates having 20 mm thickness were fabricated and subjected to 7.62 × 39 mm mild steel core projectile with an impact velocity of 730 ± 10 ms⁻¹. Parameters such as energy absorption, back face deformation and rate of back face deformation were measured as a function of hybridization ratio. It was observed that hybrid laminate with 50:50 ratio (w/w) of Tensylon® and Dyneema® with Tensylon® as front face showed 200% more energy absorption when compared to 100% Tensylon® laminate and showed equal energy absorption as that of expensive 100% Dyneema® laminate. Moreover, hybrid laminate with TD50:50 ratio showed 40% lower in terms of final back face deformation than Dyneema® laminate. Rate of back face deformation was also found to be slow for hybrid laminate as compared to Dyneema® laminate. Dynamic mechanical analysis showed that, Tensylon® laminate has got higher stiffness and lower damping factor than Dyneema® and hybrid laminates. The interface between Tensylon® and Dyneema® layers was found to be separating during the penetration process due to the poor interfacial bonding. Failure behaviour of laminates for different hybridization ratios were studied by sectioning the impacted laminates. It was observed that, the Tensylon® laminate has undergone shear cutting of fibers as major failure mode whereas the hybrid laminate showed shear cutting followed by tensile stretching, fiber pull out and delamination. These inputs are highly useful for body armour applications to design cost effective armour with enhanced performance.