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HLA(HighLevelArchitecture)是美国国防部 (DOD)提出的新一代仿真技术框架 ,其目的是解决各种类型仿真应用之间的互操作和仿真部件的可重用。本文简要介绍了HLA提出的背景及HLA核心RTI(RunTimeInfrastructure)的功能。本文还介绍了基于服务器 (Server)的层次过滤机制 ,并提出一种HLA/RTI实现方案———RTI-ICE 相似文献
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为了提高HLA仿真系统在高性能计算平台上的运行性能,针对高性能计算平台的高性能层次式通信环境,提出了一种共享内存/IB/以太网自适应RTI通信机制-SACM机制,该机制能够根据通信双方所在节点的网络拓扑信息,自适应建立延迟最小的通信连接,实现共享内存、IB等高速互连及以太网互连的自适应选择.同时在该通信机制中,针对节点内高速共享内存通信需求,提出了一种面向多盟员互连的共享内存通信算法,有效提高了节点内盟员通信效率.对象属性值更新延迟测试结果表明,该通信机制可以有效提高RTI在高性能计算平台的通信性能. 相似文献
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基于半实物仿真的HLA/RTI关键技术研究 总被引:1,自引:0,他引:1
分析了基于HLA/RTI的半实物仿真中实践管理、数据收集能力、RTI通用性以及网络传输安全等问题,研究了新的时间管理策略,提出了合理设置lookahead的算法,设计了数据收集的层次框架,并制定了研发RTI的通用原则和安全有效的网络传输方案,为现代半实物系统仿真提供了理论借鉴。 相似文献
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HLA虽然能够简化各类仿真系统的互操作和重用,但是接口规范与编程语言的绑定、缺乏与商业技术的融合等阻碍了它在商业领域的广泛应用,Web服务具有平台和厂商独立等良好特性,实现基于HLA分布式仿真的Web服务化能够将Web服务的优势附加给HLA.该文在分析了HLA不足和web服务优势的基础上,提出了HLA Web服务化,对比了互操作在两个上下文中的差异,分析了实现HLA Web服务化的三个层次;之后,概述了相关研究,重点讨论了实现Web使能RTI的关键技术问题及其解决方案;最后,设计了原型系统,测试结果显示原型系统能够初步实现RTI的Web服务化. 相似文献
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互联网的广泛普及和对LVC大规模仿真环境需求的增长,推动了对广域网环境下建模与仿真技术的研究。HLA Evolved和WebLVC标准均支持在广域网环境下建立分布仿真环境。重点介绍了HLA Evolved在广域网创建联邦的技术改进:WSDL API支持和容错支持服务,分析了WebLVC在解决基于Web的应用与传统建模与仿真领域互操作问题的几个关键技术,包括WebLVC协议和VR-Exchange。通过比较HLA Evolved和WebLVC的典型应用和网络拓扑、交互对象模型和通信模式,明确了这两种技术的不同应用领域和实现方式。 相似文献
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本文在HLA规范基础上,针对聚合层作战仿真系统的集成需要,提出一个面向Agent设计的仿真系统集成方法:AOSI(Agent Oriented simulations Integration)。它在面向对象设计基础上,将Object类扩展成系统级的具有自控机制的Agent类,并以之为模板生成Agent。同时为支持作战仿真系统无缝隙互操作的需求,本文将RTI接口设计成分别体现通信协议、同步协议和交互协议的三级公共父类,由Agent类继承。最后通过对现行作战仿真系统的Agent化改造,实现了一个面向联合作战仿真的聚合层多军兵种Agent的组合式集成模型。 相似文献
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为解决大规模复杂不确定性故障诊断问题的建模和推理难题,提出一种扩展的因子图模型——层次因子图,并给出了相应的推理及建模方法。该模型采用层次式拓扑结构表达问题领域的结构化知识,具备现有概率图模型的所有优点。经实例验证表明:所提出的层次因子图模型可以较好地解决大规模复杂不确定性故障诊断问题。 相似文献
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Lord Aikins Adusei 《African Security Review》2013,22(3):332-359
Energy continues to serve as the bedrock of modern economies and the main driver of modern society. For Africa, the production and supply of energy resources such as crude oil, natural gas, uranium, coal, biomass, biofuels and other renewables are an important source of employment, rents, taxes, royalties and profits. This sector brings in several tens of billions of dollars of revenue annually. The production and delivery of such resources, however, depend on critical infrastructures such as pipelines, refineries, processing plants, terminals, rigs, electrical energy pylons, substations, pump stations, vessels, and tankers. These infrastructures have been attacked by terrorists, insurgents, vandals and saboteurs, all of whom see them as targets against which to register their grievances and extract concessions from the state. This paper is a chronological account of some of the documented incidents of terrorism, insurgency, kidnapping, destruction, sabotage, and human casualties suffered in the oil and gas sectors in Africa between 1999 and 2012. It is based on data extracted from the databases of the RAND Database of World Terrorism Incidents and the University of Maryland's Global Terrorism Database (GTD). 相似文献
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In the Post-Bipolar Era the growing complexity of the military operations requires a new approach for the resolution of international crises. Since the end of the Cold War, peace support operations (PSO) have become the mainstay and principal occupation of most Western armies. At the same time, Italy has been one of the most important actors in such an area. The article focuses on the cooperation between military and civil components (a process called CIMIC) as a key variable in the Italian PSOs. We will analyse in detail the main lessons learned from past military interventions as well as the general context in which new tendencies are taking place. The maintaining of a minimum security frame becomes essential to fulfil activities ‘collateral’ to the mission: reconstructing services and infrastructure, food distribution, water and medication, law and order, de-mining, training of local forces, and supporting local institutions. These are the main tasks to obtain thrust and support from the population. 相似文献
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This article demonstrates the inconsistent and wavering Soviet attitude towards national liberation movements in general and the Palestinian organizations in particular. Until the late 1960s, the Soviets viewed these organizations with suspicion, hesitating to engage in political dialogue with them. However, in the 1970s, political and military events in the region, as well as modifications in the Kremlin's Cold War strategies, led to a general shift towards the Middle East in Soviet foreign policy. Soviet leaders showed increased willingness to provide certain Palestinian organizations with arms with which to conduct terrorist activities against Israeli, pro-Israeli, Jewish and Western targets. The article explores the complex relations between Palestinian organizations and the USSR in the field of international terror. The study also exposes and analyzes the nature and content of Soviet–Palestinian arms dialogues and transactions. It provides clear evidence that Soviet policymakers and other luminaries were fully informed of, and sometimes directly involved in, these transactions and dialogues at the highest levels. 相似文献
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Paul Rich 《Small Wars & Insurgencies》2013,24(1):39-56
The September 11 global crisis prompted by the attacks on the World Trade Center and the Pentagon raises major questions concerning the nature and trajectory of terrorism in the post-Cold War global order. Hitherto, terrorism has been largely debated by analysts at the level of nation states. Terrorist and insurgent movements have also been largely anchored in nationalist and ethnic power bases even when they have sought to mobilise a transnational ideological appeal on religious or class grounds. There have been a few exceptions to this pattern such as the alliance between the German Baader-Meinhof group and the Japanese Red Army Faction, but even such international alliances as this did not, until at least the 1980s, presage anything like a global terrorist network necessitating a global strategic response. This study examines terrorism and global strategic responses. 相似文献
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Jelmer Brouwer 《Small Wars & Insurgencies》2013,24(5):835-856
This article analyses to what extent the Burmese KNU insurgency made use of external support from states, refugees, and diasporas. Based on extensive fieldwork it is concluded that support from neighbouring states and refugees has for years kept the Karen rebellion alive. Western countries perceived forms of resistance to the illegitimate Burmese regime as just and have therefore played a crucial role in the continuation of conflict in Karen State. It is important that policymakers and donors as well as executing organizations continue to reflect critically on the way they exercise their work. 相似文献
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Aleksander Zdravkovski 《Small Wars & Insurgencies》2013,24(5-6):941-963
ABSTRACTWhat was the scope of the Bosnian jihadi participation in the war in Syria? Did the Bosnian volunteers tend to join one particular faction? Why did the Bosnian youngsters decide to join the holy war in the Levant? Was this an organized and hierarchical process or was this a grassroots movement? Last, were all the Salafis in Bosnia supportive of this dynamic or did this process cause internal frictions? These are some of the questions that this research will try to answer. 相似文献
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Christopher Davis 《Defence and Peace Economics》2013,24(3):145-177
The Soviet Union was able to develop a large military-industrial complex and become the world's second superpower despite deficiencies in its centrally planned economy because defence was given high priority status and special planning, rationing and administrative mechanisms were used to attain national security objectives. However, in the period 1976-85 the effectiveness of priority protection diminished and defence institutions experienced more of the problems typical of the shortage economic system. The heavy defence burden also created growing difficulties for the civilian economy. The attempts by the Gorbachev government to reform the defence sector and improve defence-economic relationships during perestroika (1985-91) uniformly failed. For most of the transition period, the Russian military-industrial complex has been adversely affected by its low priority status, cuts in defence spending, instability of the hybrid politico-economic system, and negative growth of the economy. The armed forces and defence industry have been reduced in size and their outputs of military services and equipment have fallen to low levels. Nevertheless, the Russian armed forces still have over one million troops, significant stocks of sophisticated conventional weapons, and a large nuclear arsenal. The government of President Putin has raised the priority of the defence sector, increased real defence spending, and adopted ambitious plans to revive Russian military power. It is likely, though, that tight resource constraints will hamper efforts to reform the armed forces and to upgrade weapons. By 2010 Russia will be an important, but not dominant, military power in Eurasia. 相似文献
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Bettina Renz 《Small Wars & Insurgencies》2013,24(1):55-77
The collapse of the Soviet Union precipitated the massive expansion of drug use and trade in Russia. The country now has one of the largest populations of injecting drug users in the world and has become the largest single-country market for Afghan heroin. In 2003 the Federal Service for the Control of the Drugs Trade was created to coordinate a comprehensive counternarcotics strategy appropriate to the scale of this threat. The service continues to face a number of challenges in its early stages of development. However, it has made considerable advances in improving responses to large-scale organised crime and in building international cooperation. 相似文献