军事通信网络效能评估中的多数据源融合方法

通过分析军事通信网络效能评估数据源的特征,提出了一种融合专家经验、仿真和实测数据评估军事通信网络效能的方法。包括用信念图统一表达数据形式;以实测数据为训练样本,使用支持向量机拟合网络参数与性能指标关系模型,通过比较预测值与仿真结果获取仿真数据可信度;采用扩展贝叶斯法融合多源数据,给出了基于多数据源的军事通信网络效能评估流程;最后以评估某舰艇编队军事通信网络效能为例,给出了具体融合过程,结果表明融合多数据源的评估结果的有效性和可信性更高。     

多特征融合文本聚类的新闻话题发现模型

融合新闻命名实体、新闻标题、新闻重要段落、文本语义等多特征影响,提出基于多特征融合文本聚类的新闻话题发现模型。模型根据新闻的多特征影响,提出一种多特征融合文本聚类方法。该方法针对新闻标题、新闻重要段落等特征因素构建向量空间模型及相似度算法,基于潜在狄利克雷分配模型构建主题空间模型及相似度算法,针对命名实体构建命名实体模型及相似度算法,并将三种相似度算法形成最优融合。基于多特征融合文本聚类方法,模型改进了用于新闻话题发现的Single-Pass算法。实验是在真实新闻数据集上开展的,实验结果表明:该模型有效地提高了新闻话题发现的准确率、召回率和综合评价指标,并具有一定的自适应能力。     

小生境粒子群支持向量机的网络故障诊断

针对支持向量机(SVM)在网络故障诊断中应用存在的参数设置和诊断模型复杂的问题,提出一种基于小生境粒子群优化的SVM解决方案。算法在进行参数寻优的同时考虑支持向量个数,实现对诊断模型复杂度的优化,并采用小生境粒子群算法进行求解,提高算法跳出局部最优的能力。在DARPA数据集上的实验表明本文提出的方法能够有效提高诊断模型的泛化性和诊断速度。     

基于数据场改进的目标分群算法

针对支持向量聚类算法训练样本不稳定问题,引入数据场概念,提出一种基于数据场的支持向量聚类算法,将数域空间构成的数据场中势值较高样本作为训练集获得模型再进行预测聚类。将改进的算法用于态势估计中目标分群问题,仿真结果表明:该算法在样本容量不是很高条件下的准确率较传统算法有所提高,很好地解决了训练样本选择影响聚类效果的问题,但改进后算法耗时较原先有所增加。     

基于时序的舰空导弹试验靶标数据处理

在舰空导弹试验鉴定中,靶标真值数据、武备内部数据有一个显著的特点是基于时间序列,靶标真值数据处理的目的是转为严格对应武器系统内部报文时序的真值序列;系统分析了四点外推剔点算法、拉格朗日及牛顿插值算法、坐标转换算法的实际应用,深入研究了基于时间序列的靶标真值数据处理分析的方法流程,并给出了在某型舰空导弹试验中的具体应用实例。研究的内容方法,在舰空导弹试验中有着实际的应用基础,此方法对于基于时间序列的试验数据分析有着极强的借鉴意义和推广价值。     

一种基于多组PSO的支持向量机参数优化算法

支持向量机具有优良的学习能力和推广能力,然而其性能依赖于算法参数的选取.在粒子群优化算法的基础上,提出了一种基于多组粒子群优化的支持向量机参数优化算法,该算法将各粒子自动分成多个组,能较快地在支持向量机算法参数取值范围内搜索到相应数据的算法最优参数和最优性能.     

一种舰载作战系统系泊对准约定真值预估方法

针对舰载作战系统系泊对准中普遍的使用标定地标的大地测量数据进行真值计算的方法,提出了基于极坐标变换迭代算法,推导了二维的舰载探测器探测方位角和探测距离的对准计算算法.并分析了在不同标定地标条件下给定的大地测量目标真值转换到探测器回转中心所的角度、距离约定真值,建立一种约定真值的预估方法,在探测器精度允许的情况下可用该方...     

一种基于Tsallis熵的最小二乘支持向量机稀疏算法

最小二乘支持向量机(Least Squares Support Vector Machine,LS-SVM)算法是一种优化的支持向量机(Support Vector Machine,SVM)算法,针对该算法稀疏性差,支持向量过多的问题,提出了一种基于Tsallis熵的稀疏算法。分析了最小二乘支持向量机算法的训练过程,提出了增量算法和Tsallis熵的概念,以此为基础提出了一种解决算法稀疏性的改进算法;最后对算法进行了仿真。仿真结果表明,该改进算法相比于传统算法稀疏性更强,适用于大样本集的系统辨识。     

基于网络环境的应急指挥数据集成与挖掘研究

分析了网络环境下的应急指挥的信息来源,进行了数据库设计。基于应急指挥数据源,创建了多维数据集,实现了不同主题构建不同的多维数据集的技术要求。以SQLServer2010集成服务的API为基础,开发了ETL工具,实现了数据抽取、清洗及装载等任务。基于数据挖掘理论,通过决策树算法生成智能决策指挥方案。     

基于模糊聚类的多目标跟踪算法

提出了一种新的基于模糊聚类的多目标跟踪算法,该算法通过一种改进的模糊聚类算法,首先得到可能的目标数和测量点迹与目标预测位置之间的隶属度,然后结合Kalman滤波将隶属度作为权值系数对预测新息向量进行加权,来实现目标状态估计的更新。仿真结果表明,传统数据融合多目标跟踪算法,一般需要假定目标数并且在多目标密集时易产生关联错误而导致跟踪发散,新算法通过模糊聚类客观有效地确定了目标数并且通过加权过程保证了对多目标密集时的高精度。     

Helping hands: civil–military cooperation and Italy's military operation abroad

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.     

Terrorism,insurgency, kidnapping,and security in Africa's energy sector

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).     

A1 Qaeda and the radical Islamic challenge to western strategy

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.     

Tacit support for terrorism: The rapprochement between the USSR and Palestinian guerrilla organizations following the 1967 war

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.     

The UK,interrogation and Iraq, 2003–2008

The UK’s interrogation operations during the conflict in Iraq (2003–2008) are often portrayed by the media as involving significant amounts of mistreatment. This article demonstrates that these practices are not necessarily representative of the UK’s interrogation operations across this conflict. In doing so it contributes to the limited literature on the practice of interrogation and on the UK’s combat operations in Iraq. The UK’s interrogation capability, and therefore its intelligence-gathering capability, is shown to have rested primarily with the military’s Joint Forward Interrogation Team (JFIT). The JFIT suffered from limitations to the number, training and experience of its interrogators and interpreters. It is argued that maintaining a permanent, higher level of preparedness for interrogation by the British armed forces is desirable.     

Remembering and forgetting Mirambo: Histories of war in modern Africa

ABSTRACT

While the study of organised violence is considered essential to understanding the history of the West, and accordingly imbued with various layers of meaning and remembrance, war is widely regarded as inimical to the modern nation in Africa and stable development more broadly. Using examples drawn from primarily from East Africa, this paper considers the ways in which warfare in the deeper (‘precolonial’) past has been framed and envisioned in recent decades, in particular by governments whose own roots lie in revolutionary armed struggle and who began life as guerrilla movements. While in some cases particular elements of the deeper past were indeed mobilised in pursuit of contemporary political goals, in many other scenarios histories of precolonial violence were beheld as problematic and unworthy of remembrance. This paper highlights the paradox and ambiguity which has attended the memory of key aspects of Africa’s deeper past.     

Helping hands: external support for the KNU insurgency in Burma

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.     

SIM—LISP:一个通信网络管理专家系统外壳的设计与实现

本文介绍了笔者为开发名为OONMES的网络管理专家系统所实现的一个简单专家系统工具SIM-LISP。SIM-LISP是一个用C/C++语言来实现的模拟LISP语言的可调用函数集,它短小精巧,速度快,可以完成针对网管专家系统的事实或规则知识的表示、匹配、合一和推理等基本操作,并有与知识对象的连接功能,是网管专家系统内核实现的支撑环境。     

Al Qaida on the US invasion of Afghanistan in their own words

This article consists of selected translations from captured interviews and dairies of Al Qaida members. The time period covered is from mid-2001 to early 2002 and concerns their operations in Afghanistan. The material clearly conveys a range of emotion, from confident to despondent, as well as efforts to contest the US actions. The first several pages give the reader context and some possible “lessons learned,” but the story(ies) are best told by the Al Qaida members themselves. All names are pseudonyms.     

基于GTST-DMLD-ESD的装备RMS建模仿真

装备的RMS是装备的重要设计参数,是影响战备完好和保障能力的关键因素.引入GTST-DMLD作为主要建模工具,建立起装备系统的RMS描述模型,以ESD为补充和扩展,对维修过程进行建模.并以GTST-DMLD-ESD模型作为装备RMS仿真的核心,对装备RMS仿真模型的总体框架进行了研究,并对各模块进行了较为详细的探讨.