基于Virtools的洞库工程维护管理虚拟训练系统

为了解决洞库工程教学训练缺乏直观性和实践性的难题,利用Revit,Sketch Up和3D Max软件进行三维模型构建,以漫游中的基本图形变换和位置实时显示技术为例介绍了相关数学原理及Virtools编程实现过程,实现预定功能后发布了洞库工程维护管理虚拟训练系统。该虚拟训练系统具有功能演示、虚拟漫游、虚拟施工、维护管理虚拟训练和考核评估等功能,可以让学员身临其境地学习洞库工程维护管理的相关知识,有效地提高了教学效果。     

From rivals to partners: AirSea Battle and the US air force–navy relationship

AirSea Battle (ASB) has generated significant publicity, controversy, and debate among scholars, analysts, commentators, and observers of US defense strategy. However, a research gap exists concerning formal analysis of the impact of the operational concept on the relationship between the US Air Force (USAF) and the US Navy (USN). The impact of the ASB operational concept on the USAF–USN relationship is examined across the issue areas of strategy, budgets, weapons procurement, and training. These four issue areas represent important areas of historical conflict and competition between the Air Force and Navy. The conclusion is that ASB is ushering in a new era of Air Force–Navy partnership that advances the inter-service dynamic from “jointness” toward integration. The emergent USAF–USN partnership therefore represents a significant development in US defense politics and defense strategy.     

矩阵变换器自抗扰控制策略研究

矩阵变换器的输出电压易受各种因素的影响,为了改善输出性能,将自抗扰控制技术应用于矩阵变换器的闭环控制中。分析了自抗扰控制器的特性,提出了一种双闭环自抗扰控制策略,即电流内环与电压外环均采用一阶简化的自抗扰控制算法。仿真结果表明:该方法不仅可以有效地抑制多种扰动的影响,而且比PI控制具有更优的动静态性能,可满足高性能矩阵变换器系统的控制要求。     

浮空器气体混充定高建模与仿真

依据浮空器浮重平衡特性以及理想气体状态方程,探索了一种气体混充控制浮空器平飞高度的定高方式,并对浮空器气体混充定高技术进行了总体设计研究。考虑到热力学特性对于浮空器上升过程和平飞过程的重要性,结合工程热力学中混充气体的热物性能,以超压气球作为研究对象,分析球体上升和平飞过程中的热环境,并与动力学模型进行耦合。在此基础上,对混充气球上升及平飞过程进行力学仿真,得到气球上升过程中高度、速度、气体温度以及压强的变化,验证了浮空器混充定高技术的可行性,为后续浮空器飞行试验提供指导。     

单兵信息系统协同作战技术研究

协同作战是提高体系作战能力,发挥整体作战效能的关键,针对单兵班组在未来信息化条件下单兵作战单元协同作战的协同模式、协同流程、协同策略,协同指挥、协同作战效能评估等方面进行阐释,对未来单兵信息系统班组协同作战技术研究具有一定的指导意义。     

The limits of robotic solutions to human challenges in the land domain

In the face of rapid technological change and the creation of ambitious military modernisation programmes, this paper argues that land forces, in managing the relationship between force levels and the adoption of military robotics, must recognise that there are inherent limits to techno-centric force reduction efforts and realise the inefficacy of substituting skilled soldiers with robots. It begins with an overview of how the proper integration of robotics into a military’s force structure can improve capability, save lives and potentially reduce costs, but suggests that common accounts of robot utility are exaggerated and endanger the risk assessment processes governing the adoption of said technologies and relevant personnel settings. The paper explores the limits of robotic solutions to military problems, discussing their technical limitations, redundancy and related issues that, when combined with a technico-moral skills degradation problem also detailed within, point to the need to reshape force structures to suit the adoption of robotics while preserving existing levels of human staffing.     

改进IAHP-CIM模型的雷达组网探测能力评估方法

针对雷达组网探测能力的评估问题,采用鱼骨图法对影响雷达组网探测能力的多种因素进行梳理,得到结构层次清晰的指标评价体系。采用改进的区间层次分析—控制区间和记忆模型对该指标体系进行评估,具体方法是:运用区间层次分析法构造区间判断矩阵;利用蛙跳算法求解区间判断矩阵中满足最小一致性的确定性矩阵;利用控制区间和记忆模型来确定各指标的风险概率,实现指标体系的评估。以具体的案例为对象进行仿真实验,结果表明,所提评估方法有效,评估结论相对客观、可信,对雷达组网探测能力评估具有一定参考价值,从而为雷达组网的优化部署奠定良好基础。     

评估飞控系统的风洞虚拟飞行试验系统与关键技术

为向开展具体的风洞虚拟飞行试验技术提供引导,针对应用于飞控系统评估的风洞虚拟飞行试验系统及关键技术进行了分析。基于传统意义上的飞控系统评估方法的不足,分析风洞虚拟飞行试验应用于飞控系统评估的优势;按飞控系统常用的姿态控制回路及制导控制回路的组成形式,介绍风洞虚拟飞行试验系统方案与工作原理,详细分析它与半实物仿真系统的差异;分析风洞虚拟飞行试验应用于飞控系统评估需解决的关键技术问题,包括风洞虚拟飞行试验评估方法、飞行器模型设计技术、飞控系统改进技术及模型支撑技术。     

Indications and warning in Belgium: Brussels is not Delphi

The terrorist attacks in France and Belgium of 2015–2016 that occurred while these countries were in a heightened state of alert raise questions about indications and warning methodology as well as effectiveness of the blanket-protection deployment of security services assisted even by the military. Response and perhaps even more anticipation may require strategic rethinking in light of the predatory attacks that target the most vulnerable spots of the public space. This study looks at threat analysis in Belgium as conducted through her intelligence fusion centre Coordination Unit for Threat Analysis (CUTA)?????? since its inception in 2006. With a special focus on what is known, at the time of writing, about the terrorist attacks in Paris and Brussels, this study hopes to put into context how the system (mal)functions and will also consider the preventive measures that respond to the threat, and the international aspects which have implications far beyond Belgian borders. Therefore, a case is made for not just a Belgian homeland security framework, but one that fits into an EU-wide security concept.     

Hardening the Hard,Softening the Soft: Assertiveness and China’s Regional Strategy

There is a growing view that the emerging brand of Chinese regional diplomacy in recent years is increasingly assertive. This article attempts to make better sense of this perceived more forceful Chinese diplomacy. It argues that Chinese regional behavior is more profitably understood through the lens of a two-pronged foreign policy strategy that combines two particular aspects. One is a tougher and more uncompromising approach toward issues that China regards as concerning its core interests. The other is a more flexible and cooperative position toward interests that, while significant, are of secondary importance.