无人机技术中国专利分布情况及其专利情报运用

无人机技术是近年兴起的一项涵盖领域宽、技术难度高、战场和市场应用前景均十分广阔的前沿技术.文章分析了1986年-2012年份期间在中国申请的、其专利名称、权利要求和摘要中包含有“无人机”、“无人驾驶飞机”或者“无人驾驶飞行器”等关键词的专利检索结果分布情况.文章对如何在国防科研中积极有效地运用专利情报以及加强科研过程中的保密工作提出了建议.     

基于解析结构模型的网络空间信息防御能力分析

针对网络空间信息防御需求及特点,利用解析结构模型方法,分析网络空间信息防御能力的影响要素及其关系,建立网络空间信息防御能力影响要素的层次结构模型,并找出核心要素和关键环节,为网络空间信息防御能力建设提供决策支持。     

Securing a border under asymmetric information

We study a stochastic interdiction model of Morton et al. IIE Transactions, 39 (2007):3–14 that locates radiation sensors at border crossings to detect and prevent the smuggling of nuclear material. In this model, an interdictor places sensors at customs checkpoints to minimize a potential smuggler's maximum probability of crossing a border undetected. We focus on a model variant in which the interdictor has different, and likely more accurate, perceptions of the system's parameters than the smuggler does. We introduce a model that is tighter and uses fewer constraints than that of Morton et al. We also develop a class of valid inequalities along with a corresponding separation procedure that can be used within a cutting‐plane approach to reduce computational effort. Computational results demonstrate the effectiveness of our approach.Copyright © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 91–100, 2014     

Born violent: Armed political parties and non-state governance in Lebanon's civil war

We know little of the internal governing practices of non-state actors once in control of territory. Some territories have witnessed the establishment of new institutions of public goods remarkably similar to state institutions. This article compares four armed political parties governing territory during the Lebanese civil war. These non-state violent actors established complex political and economic institutions and administrative structures. Despite the wide range of ideologies and identities of these actors, they all converged in their institutional priorities, although not in their capacities or the particular ways of achieving those priorities. Data from interviews and the actions of the armed political parties suggest a combination of ideology and desire for control is causal in generating public institutions, partly attributable to the high degree of citizen activism marking the Lebanese case.     

New maximum entropy methods for modeling lifetime distributions

This article introduces two new maximum entropy (ME) methods for modeling the distribution of time to an event. One method is within the classical ME framework and provides characterizations of change point models such as the piecewise exponential distribution. The second method uses the entropy of the equilibrium distribution (ED) for the objective function and provides new characterizations of the exponential, Weibull, Pareto, and uniform distributions. With the same moment constraints, the classical ME and the maximum ED entropy algorithms generate different models for the interarrival time. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 427–434, 2014     

基于分形维数的数字调制信号识别

在复杂的电磁环境下,如何快速准确地对低信噪比下的常见通信信号进行较全面的识别是一个亟待解决的问题。在对信号分形维数仿真讨论的基础上,提出了一种新的通信信号识别方法。首先,对接收到的信号进行预处理,然后提取其盒维数和信息维数,将两者作为识别的特征参数,最后基于支持向量机实现未知信号的识别。由仿真结果分析可知:预处理后的信号序列的盒维数和信息维数分离度高且受噪声和信号参数的影响小,识别结果较好。在信噪比为5 dB时,不同调制类型信号间的识别准确率最低为87%。     

基于信息熵理论的团装备保障设置模式评价

针对团装备保障层次设置模式优选时缺乏定量分析的问题,运用信息熵理论,建立了相应拓扑结构的时效和质量结构熵模型,尝试对团装备保障层次设置的组织结构有序度进行客观评价,为团装备保障层次设置模式的选择提供科学依据。     

DM2的军事电子信息系统体系结构设计数据集成方法

基于DM2提出与设计工具无关的军事电子信息系统体系结构集成方法,通过数据集成进而实现体系结构设计成果的集成;根据集成过程中数据处理的需要,分为预处理、文件合并和冗余处理3个阶段;在描述3个阶段所采用方法的基础上,对每个阶段分别进行了实验,不仅证明各阶段方法的有效性,也证明了基于DM2的体系结构集成方法的可行性和有效性。     

指控信息特征的分析与捕获方法

为了进一步提高指挥信息系统的信息推荐效率,从信息本身和用户两个角度出发分析了指控信息的形式化描述方法,并提出了基于文本分析和配置文件描述的特征捕获方法。经案例验证,该方法对于军事应用中的信息推荐技术有一定的支持作用。     

军事信息系统体系结构技术研究与应用思考

美军的实践经验表明,体系结构是破解大系统顶层设计难题的有效手段。在分析体系结构概念内涵的基础上,通过综合考察美军体系结构框架和设计方法的发展情况,结合国内军事信息系统体系结构技术研究的传统做法和工程经验,建立了"五视图"体系结构框架,提出了基于"五视图"的体系结构设计方法,探讨了体系结构技术工程应用的几点思考与切身体会,最后给出了未来发展的几点建议,为提高国内军事信息系统体系结构应用的规范化、工程化水平提供参考与借鉴。