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A framework of force of information influence and application for C4KISR system
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作者 MAO Shaojie DIAO Lianwang +6 位作者 SUN Yu WANG Heng YI Kan XU Xin MAO Xiaobin ZHANG Kecheng SHENG Long 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2024年第2期430-443,共14页
The subversive nature of information war lies not only in the information itself, but also in the circulation and application of information. It has always been a challenge to quantitatively analyze the function and e... The subversive nature of information war lies not only in the information itself, but also in the circulation and application of information. It has always been a challenge to quantitatively analyze the function and effect of information flow through command, control, communications, computer, kill, intelligence,surveillance, reconnaissance (C4KISR) system. In this work, we propose a framework of force of information influence and the methods for calculating the force of information influence between C4KISR nodes of sensing, intelligence processing,decision making and fire attack. Specifically, the basic concept of force of information influence between nodes in C4KISR system is formally proposed and its mathematical definition is provided. Then, based on the information entropy theory, the model of force of information influence between C4KISR system nodes is constructed. Finally, the simulation experiments have been performed under an air defense and attack scenario. The experimental results show that, with the proposed force of information influence framework, we can effectively evaluate the contribution of information circulation through different C4KISR system nodes to the corresponding tasks. Our framework of force of information influence can also serve as an effective tool for the design and dynamic reconfiguration of C4KISR system architecture. 展开更多
关键词 information warfare command control communications computer KILL intelligence surveillance reconnaissance(C4KISR)system information circulation force of information influence information entropy
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Geographies of Chemical Warfare in Vietnam: The Merry Band of Retirees
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作者 Bryan R. Higgins 《Open Journal of Soil Science》 2024年第9期530-536,共7页
This review explores the recent development of research on rainbow herbicides as chemical weapons and the geographies of chemical warfare in what is now the Socialist Republic of Vietnam. While the use and impacts of ... This review explores the recent development of research on rainbow herbicides as chemical weapons and the geographies of chemical warfare in what is now the Socialist Republic of Vietnam. While the use and impacts of Agent Orange have previously been well documented, the production and extensive application of five other rainbow agents by the United States military has only recently been investigated in detail. What is exceptional about this research of chemical warfare landscapes is that the 23 refereed journal publications in this review were designed, implemented, and published in a unique collective research project by Ken Olson and a Merry Band of Military Retirees. Their groundbreaking research portfolio includes many geographical dimensions and the political ecology of chemical warfare. This includes the extensive exposure of civilians in Vietnam to these chemical agents, exposure of US military personnel in Southeast Asia and Panama, exposure of civilians near the private industrial sites that produced these rainbow agents in North America and the hazardous soil contamination that perseveres at these sites in Vietnam and the US. Given this impressive research depth and global scope, this review explores the unique way this research portfolio was developed by a Merry Band of Retirees through an interview with its leader, Ken Olson. It examines the goals and ethical orientation of these military veterans, the political ecology involved, the creative strategies they utilized to produce this innovative research, and how they changed the way Veterans exposed to chemical warfare agents are treated by the US government. 展开更多
关键词 Chemical warfare Rainbow Agents GEOGRAPHY Merry Band of Retirees Political Ecology
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Electronic warfare system simulation based on SystemVue 被引量:1
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作者 Limin Liu Cheng Cheng Zhuangzhi Han 《International Journal of Modeling, Simulation, and Scientific Computing》 EI 2015年第3期155-171,共17页
Electronic warfare simulation can allow the realistic evaluation of the performance ofequipments and techniques, and it can also allow the realistic training of individualsunder conditions that, in real life, might ki... Electronic warfare simulation can allow the realistic evaluation of the performance ofequipments and techniques, and it can also allow the realistic training of individualsunder conditions that, in real life, might kill them. We propose a new scheme of EWsimulation system based on SystemVue. This paper mainly expounds the structure ofsystem and the key technology of subsystem establishment. As a proof of concept, aradar electronic reconnaissance simulation experiment is explained in this paper. Andthe results verify the feasibility of the scheme. 展开更多
关键词 Electronic warfare system systemVue SIMULATION signal processing
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Multiple chemical warfare agent simulant decontamination by self-driven microplasma 被引量:1
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作者 陈恕彬 王世宇 +1 位作者 朱安娜 王瑞雪 《Plasma Science and Technology》 SCIE EI CAS CSCD 2023年第11期12-21,共10页
Low-temperature plasma is a green and high-efficiency technology for chemical warfare agent(CWA)decontamination.However,traditional plasma devices suffer from the problems of highpower composition and large power-supp... Low-temperature plasma is a green and high-efficiency technology for chemical warfare agent(CWA)decontamination.However,traditional plasma devices suffer from the problems of highpower composition and large power-supply size,which limit their practical applications.In this paper,a self-driven microplasma decontamination system,induced by a dielectric-dielectric rotary triboelectric nanogenerator(dd-r TENG),was innovatively proposed for the decontamination of CWA simulants.The microplasma was characterized via electrical measurements,optical emission spectra and ozone concentration detection.With an output voltage of-3460 V,the dd-r TENG can successfully excite microplasma in air.Reactive species,such as OH,O(1D),Hαand O3were detected.With input average power of 0.116 W,the decontamination rate of 2-chloroethyl ethyl sulfide reached 100%within 3 min of plasma treatment,while the decontamination rates of malathion and dimethyl methylphosphonate reached(65.92±1.65)%and(60.88±1.92)%after 7 min of plasma treatment,respectively.In addition,the decontamination rates gradually decreased with the increase in the simulant concentrations.Typical products were identified and analyzed.This study demonstrates the broad spectrum and feasibility of the dd-r TENG-microplasma for CWA elimination,which provides significant guidance for their practical applications in the future. 展开更多
关键词 triboelectric nanogenerator MICROPLASMA DECONTAMINATION chemical warfare agents simulants(Some figures may appear in colour only in the online journal)
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New concepts and their applications in underwater acoustic warfare simulation system
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作者 DONG Yangze~(1,2), YAO Lan~(2) 1) Shanghai Jiaotong University, Shanghai 200030, 2) Shanghai Marine Electronic Equipment Research Institute, Shanghai 200025) 《声学技术》 CSCD 2004年第S1期29-31,共3页
An underwater acoustic warfare simulation system (UAWSS) with a structure of high level architecture (HLA) is studied based upon a previous research project. With the experience and lessons learned, some new concepts ... An underwater acoustic warfare simulation system (UAWSS) with a structure of high level architecture (HLA) is studied based upon a previous research project. With the experience and lessons learned, some new concepts are adopted in the implementation of UAWSS according to the essence of simulation and the objective of the system, among which are simulation synthetic environment, signal processing at other simulation nodes, decomposition of underwater sound channel, channel varying law and rules on system and parts evaluation, etc. Applications of these new ideas show that they are effective. 展开更多
关键词 UNDERWATER ACOUSTIC DECOY SIMULATION UNDERWATER ACOUSTIC warfare SIMULATION HLA SIMULATION SYNTHETIC
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Tensor-Centric Warfare V: Topology of Systems Confrontation
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作者 Vladimir Ivancevic Peyam Pourbeik Darryn Reid 《Intelligent Control and Automation》 2019年第1期13-45,共33页
In this paper, as a new contribution to the tensor-centric warfare (TCW) series [1] [2] [3] [4], we extend the kinetic TCW-framework to include non-kinetic effects, by addressing a general systems confrontation [5], w... In this paper, as a new contribution to the tensor-centric warfare (TCW) series [1] [2] [3] [4], we extend the kinetic TCW-framework to include non-kinetic effects, by addressing a general systems confrontation [5], which is waged not only in the traditional physical Air-Land-Sea domains, but also simultaneously across multiple non-physical domains, including cyberspace and social networks. Upon this basis, this paper attempts to address a more general analytical scenario using rigorous topological methods to introduce a two-level topological representation of modern armed conflict;in doing so, it extends from the traditional red-blue model of conflict to a red-blue-green model, where green represents various neutral elements as active factions;indeed, green can effectively decide the outcomes from red-blue conflict. System confrontations at various stages of the scenario will be defined by the non-equilibrium phase transitions which are superficially characterized by sudden entropy growth. These will be shown to have the underlying topology changes of the systems-battlespace. The two-level topological analysis of the systems-battlespace is utilized to address the question of topology changes in the combined battlespace. Once an intuitive analysis of the combined battlespace topology is performed, a rigorous topological analysis follows using (co)homological invariants of the combined systems-battlespace manifold. 展开更多
关键词 Tensor-Centric warfare systemS CONFRONTATION systems-Battlespace TOPOLOGY Cobordisms and MORSE Functions Morse-Smale Homology Morse-Witten Cohomology Hodge-De Rham Theory
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“Cyberspace” or “Cyber warfare”研究热点与趋势分析
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作者 郑涛 李自力 +2 位作者 赵小强 郝烺超 谭跃进 《现代情报》 CSSCI 2013年第11期119-130,共12页
运用CitespaceⅡ信息可视化图谱软件对"cyberspace" or "cyber warfare"研究文献数据进行分析,绘制了共引网络图谱,并依据图谱中关键节点文献的知识基础,对研究热点及趋势进行了初步探讨,得出国外研究的热点与前沿... 运用CitespaceⅡ信息可视化图谱软件对"cyberspace" or "cyber warfare"研究文献数据进行分析,绘制了共引网络图谱,并依据图谱中关键节点文献的知识基础,对研究热点及趋势进行了初步探讨,得出国外研究的热点与前沿的相关结论,对"cyberspace" or "cyber warfare"的研究具有一定的参考价值。 展开更多
关键词 CitespaceⅡ CYBERSPACE CYBER warfare 网络空间 网络战 赛博空间 赛博战 研究热点 研究趋势
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Anthrax: A disease of biowarfare and public health importance 被引量:8
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作者 Ajay Kumar Goel 《World Journal of Clinical Cases》 SCIE 2015年第1期20-33,共14页
Bioterrorism has received a lot of attention in the first decade of this century. Biological agents are considered attractive weapons for bioterrorism as these are easy to obtain, comparatively inexpensive to produce ... Bioterrorism has received a lot of attention in the first decade of this century. Biological agents are considered attractive weapons for bioterrorism as these are easy to obtain, comparatively inexpensive to produce and exhibit widespread fear and panic than the actual potential of physical damage. Bacillus anthracis(B. anthracis), the etiologic agent of anthrax is a Gram positive, spore forming, non-motile bacterium. This is supposed to be one of the most potent BW agents because its spores are extremely resistant to natural conditions and can survive for several decades in the environment. B.anthracis spores enter the body through skin lesion(cutaneous anthrax), lungs(pulmonary anthrax), or gastrointestinal route(gastrointestinal anthrax) and germinate, giving rise to the vegetative form. Anthrax is a concern of public health also in many countries where agriculture is the main source of income including India. Anthrax has been associated with human history for a very long time and regained its popularity after Sept 2001 incidence in United States. The present review article describes the history, biology, life cycle, pathogenicity, virulence, epidemiology and potential of B. anthracis as biological weapon. 展开更多
关键词 ANTHRAX BACILLUS ANTHRACIS Biological warfare EPIDEMIOLOGY Infection PUBLIC health
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An approach for predicting digital material consumption in electronic warfare 被引量:6
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作者 Xiong Li Xiao-dong Zhao Wei Pu 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2020年第1期263-273,共11页
Electronic warfare is a modern combat mode,in which predicting digital material consumption is a key for material requirements planning(MRP).In this paper,we introduce an insensitive loss function(ε) and propose a ε... Electronic warfare is a modern combat mode,in which predicting digital material consumption is a key for material requirements planning(MRP).In this paper,we introduce an insensitive loss function(ε) and propose a ε-SVR-based prediction approach.First,we quantify values of influencing factors of digital equipments in electronic warfare and a small-sample data on real consumption to form a real combat data set,and preprocess it to construct the sample space.Subsequently,we establish the ε-SVR-based prediction model based on "wartime influencing factors-material consumption" and perform model training.In case study,we give 8 historical battle events with battle damage data and predict 3 representative kinds of digital materials by using the proposed approach.The results illustrate its higher accuracy and more convenience compared with other current approaches.Taking data acquisition controller prediction as an example,our model has better prediction performance(RMSE=0.575 7,MAPE(%)=12.037 6 and R^2=0.996 0) compared with BP neural network model(RMSE=1.272 9,MAPE(%)=23.577 5 and R^2=0.980 3) and GM(1,1) model(RMSE=2.095 0,MAPE(%)=24.188 0 and R^2=0.946 6).The fact shows that the approach can be used to support decision-making for MRP in electronic warfare. 展开更多
关键词 ELECTRONIC warfare SUPPORT VECTOR regression(SVR) Prediction model DECISION-MAKING
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Portable System for CWA Detection Using Micro Array Gas Sensor 被引量:4
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作者 J.H.Kwak Y.T.Lim +6 位作者 G.H.Kim N.J.Choi H.D.Park G.H.Rue J.S.Huh J.C.Kim D.D.Lee 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期124-128,共5页
Biochemistry weapon is raising new tools of war and terror.This research is an experiment about portable system for CWAs (chemical warfare agents) detection using micro array gas system.CWAs were divided into four typ... Biochemistry weapon is raising new tools of war and terror.This research is an experiment about portable system for CWAs (chemical warfare agents) detection using micro array gas system.CWAs were divided into four types such as blood, nerve,vesicant,and choking agent.To detect various CWAs,semiconductor thick film sensor array based on tin oxide was fabricated and their gas responses were examined.Operating temperature was range of 250℃to 350℃and gas concentration was range of 0.1μg/g to 10μg/g.Sensor array was measured as operating temperatures,concentrations for four simulant agents of CWAs.Extracted parameters from results were carried out classification among CWAs through the principal component analysis (PCA).Also,classification of gases is studied using adaptive resonance theory (ART) that is one of neural network algorithm.Results displayed using PDA system. 展开更多
关键词 SNO2 chemical warfare agents(CWAs) portable system ART ARRAY PCA
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Waveform design for radar and extended target in the environment of electronic warfare 被引量:3
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作者 WANG Yuxi HUANG Guoce LI Wei 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2018年第1期48-57,共10页
Transmit waveform optimization is critical to radar system performance. There have been a fruit of achievements about waveform design in recent years. However, most of the existing methods are based on the assumption ... Transmit waveform optimization is critical to radar system performance. There have been a fruit of achievements about waveform design in recent years. However, most of the existing methods are based on the assumption that radar is smart and the target is dumb, which is not always reasonable in the modern electronic warfare. This paper focuses on the waveform design for radar and the extended target in the environment of electronic warfare. Three different countermeasure models between smart radar and dumb target, smart target and dumb radar, smart radar and smart target are proposed. Taking the signal-to-interferenceplus-noise ratio(SINR) as the metric, optimized waveforms for the first two scenarios are achieved by the general water-filling method in the presence of clutter. For the last case, the equilibrium between smart radar and smart target in the presence of clutter is given mathematically and the optimized solution is achieved through a novel two-step water-filling method on the basis of minmax theory. Simulation results under different power constraints show the power allocation strategies of radar and target and the output SINRs are analyzed. 展开更多
关键词 waveform design extended target electronic warfare CLUTTER water-filling method
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A joint optimization algorithm for focused energy delivery in precision electronic warfare 被引量:3
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作者 Zhong-ping Yang Shu-ning Yang +3 位作者 Qing-song Zhou Jian-yun Zhang Zhi-hui Li Zhong-rui Huang 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2022年第4期709-721,共13页
Focused energy delivery(FED) is a technique that can precisely bring energy to the specific region,which arouses wide attention in precision electronic warfare(PREW).This paper first proposes a joint optimization mode... Focused energy delivery(FED) is a technique that can precisely bring energy to the specific region,which arouses wide attention in precision electronic warfare(PREW).This paper first proposes a joint optimization model with respect to the locations of the array and the transmitted signals to improve the performance of FED.As the problem is nonconvex and NP-hard,particle swarm optimization(PSO) is adopted to solve the locations of the array,while designing the transmitted signals under a feasible array is considered as a unimodular quadratic program(UQP) subproblem to calculate the fitness criterion of PSO.In the PSO-UQP framework established,two methods are presented for the UQP subproblem,which are more efficient and more accurate respectively than previous works.Furthermore,a threshold value is set in the framework to determine which method to adopt to take full advantages of the methods above.Meanwhile,we obtain the maximum localization error that FED can tolerate,which is significant for implementing FED in practice.Simulation results are provided to demonstrate the effectiveness of the joint optimization algorithm,and the correctness of the maximum localization error derived. 展开更多
关键词 Focused energy delivery Localization error Particle swarm optimization Precision electronic warfare Unimodular quadratic program
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ANALYSES ON SYSTEMATIC CONFRONTATION OF FIGHTER AIRCRAFT 被引量:3
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作者 HuaiJinpeng WuZhe HuangJun 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2002年第1期37-43,共7页
Analyses of the systematic confrontation between two military forcfes are the highest hierarchy on opera-tional effectiveness study of weapon systema.The physi-cal model for tactical many-on-many engagements of an aer... Analyses of the systematic confrontation between two military forcfes are the highest hierarchy on opera-tional effectiveness study of weapon systema.The physi-cal model for tactical many-on-many engagements of an aerial warfare with heterogeneous figher aircraft is estab-lished.On the basis of Lanchester multivariate equations of square law,a mathematical model corresponding to the established physical model is given.A superiorityh parame-ter is then derived directly from the mathematical model.With view to the high -tech condition of modern war-fare,the concept of superiority parameter which more well and truly reflects the essential of an air-to-air en-gagement is further formulated.The attrition coeffi-cients,which are key to the differential equations,are de-termined by using tactics of random target assignment and air-to-air capability index of the fighter aircraft.Hereby,taking the mathematical model and superiority parameter as cores,calculations amd analyses of complicate systemic problems such as evaluation of battle superiority,prog-mostication of combat process and optimization of colloca-tions have been accomplished.Results indicate that a clas-sical combat theory with its certain recent development has received newer applications in the military operation research for complicated confrontation analysis issues. 展开更多
关键词 AERIAL warfare suste atoc cpmfrpmatopm op-eratopmal effectovemess SUPERIORITY parame-ter Lanchester equation FIGHTER AIRCRAFT 战斗机 战斗机 作战效能 空战 武器对抗
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Electronic warfare in the optical band:Main features,examples and selected measurement data 被引量:3
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作者 Roman Ostrowski Artur Cywinski Marek Strzelec 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2021年第5期1636-1649,共14页
The paper presents the possibilities of,and methods for,acquiring,analysing and processing optical signals in order to recognise,identify and counteract threats on the contemporary battleground.The main ways electroni... The paper presents the possibilities of,and methods for,acquiring,analysing and processing optical signals in order to recognise,identify and counteract threats on the contemporary battleground.The main ways electronic warfare is waged in the optical band of the electromagnetic wave spectrum have been formulated,including the acquisition of optical emitter signatures,as well as ultraviolet(UV)and thermal(IR)signatures.The physical parameters and values describing the emission of laser radiation are discussed,including their importance in terms of creating optical signatures.Moreover,it has been shown that in the transformation of optical signals into signatures,only their spectral and temporal parameters can be applied.This was confirmed in experimental part of the paper,which includes our own measurements of spectral and temporal emission characteristics for three types of binocular laser rangefinders.It has been further shown that through simple registration and quick analysis involving comparison of emission time parameters in the case of UV signatures in“solar-blind”band,various events can be identified quickly and faultlessly.The same is true for IR signatures,where the amplitudes of the recorded signal for several wavelengths are compared.This was confirmed experimentally for UV signatures by registering and then analyzing signals from several events during military exercises at a training ground,namely Rocket Propelled Grenade(RPG)launches and explosions after hitting targets,trinitrotoluene(TNT)explosions,firing armour-piercing,fin-stabilised,discarding sabots(APFSDS)or high explosive(HE)projectiles.The final section describes a proposed model database of emitters,created as a result of analysing and transforming the recorded signals into optical signatures. 展开更多
关键词 OPTOELECTRONICS Electronic warfare Optical signature
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THE SYSTEM SIMULATION OF THREE-DIMENSIONAL RADAR 被引量:3
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作者 ZhangWei XiangJingcheng WangXuegang 《Journal of Electronics(China)》 2004年第5期407-412,共6页
To provide a test platform for Electronic Warfare (EW) system, it is needed to simulate the radar received Intermediate Frequency (IF) signals and radar system functions.This letter gives a description of a radar syst... To provide a test platform for Electronic Warfare (EW) system, it is needed to simulate the radar received Intermediate Frequency (IF) signals and radar system functions.This letter gives a description of a radar system simulation software developed for frequencyphase scanning three-dimensional (3-D) radar. Experimental results prove that the software could be used for system evaluation and for training purposes as an attractive alternative to real EW system. 展开更多
关键词 system simulation Electronic warfare(EW) Three-dimensional(3-D) radars Intermediate Frequency (IF) signals
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Building a highly available and intrusion tolerant database security and protection system ( DSPS) 被引量:2
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作者 蔡亮 杨小虎 董金祥 《Journal of Zhejiang University Science》 EI CSCD 2003年第3期287-293,共7页
Database Security and Protection System (DSPS) is a security platform for fighting malicious DBMS. The security and performance are critical to DSPS. The authors suggested a key management scheme by combining the serv... Database Security and Protection System (DSPS) is a security platform for fighting malicious DBMS. The security and performance are critical to DSPS. The authors suggested a key management scheme by combining the server group structure to improve availability and the key distribution structure needed by proactive security. This paper detailed the implementation of proactive security in DSPS. After thorough performance analysis, the authors concluded that the performance difference between the replicated mechanism and proactive mechanism becomes smaller and smaller with increasing number of concurrent connections; and that proactive security is very useful and practical for large, critical applications. 展开更多
关键词 Information warfare Proactive security Intrusion tolerant DSPS(Database Security and Protection system)
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Grid architecture model of network centric warfare 被引量:1
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作者 Yan Tihua Wang Baoshu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2006年第1期121-125,共5页
NCW(network centric warfare) is an information warfare concentrating on network. A global network-centric warfare architecture with OGSA grid technology is put forward,which is a four levels system including the user ... NCW(network centric warfare) is an information warfare concentrating on network. A global network-centric warfare architecture with OGSA grid technology is put forward,which is a four levels system including the user level, the application level, the grid middleware layer and the resource level. In grid middleware layer,based on virtual hosting environment, a BEPL4WS grid service composition method is introduced. In addition, the NCW grid service model is built with the help of Eclipse-SDK-3.0.1 and Bpws4j. 展开更多
关键词 network centric warfare OGSA grid service composition BPEL4WS.
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Review and Analysis: Successful Use of Soil Tunnels in Medieval and Modern Warfare and Smuggling 被引量:1
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作者 Kenneth R. Olson David R. Speidel 《Open Journal of Soil Science》 2020年第5期194-215,共22页
For more than 2500 years, soil tunnels have been used in warfare and smuggling. Initially tunnels were utilized to attack fortresses that were underlain by unconsolidated (non-bedrock) soil materials. Later tunnels pr... For more than 2500 years, soil tunnels have been used in warfare and smuggling. Initially tunnels were utilized to attack fortresses that were underlain by unconsolidated (non-bedrock) soil materials. Later tunnels provided housing and served as smuggling corridors. The medieval warfare undermining technique involved digging soil tunnels with wooden or beam props to hold up the soil ceilings. Then flammable material, such as hay or straw, was put in the tunnel and set on fire. The fire burnt the support beams which collapsed the soil tunnel ceilings and undermined the overlying perimeter wall. Later gunpowder and dynamite replaced fire when attempting to collapse a tunnel, fortress or perimeter defense. Modern warfare soil tunnels were the pathways used to move troops, weapons and supplies to the other side of a border or wall for surprise attacks. Most of the soil tunnels were placed in easy-to-dig unconsolidated soil materials that had a low water table and were not subject to flooding. Eventually, machinery was used to drill through bedrock permitting deeper and longer tunnels for troop movement or smuggling. However, when drilling through bedrock under international borders, the process creates both noise and vibrations which were often detected by the enemy. Once discovered the tunnels were often collapsed by blowing up the tunnel, injection of gas, filling with water or wastewater, or inserting barriers. A series of case studies will be examined with the goal of determining soil and site criteria required to permit successful tunneling. The most restrictive soil and geologic conditions will be identified as well as potential mitigation methods used to overcome the site restrictions will be documented. Countries with warfare or smuggling issues along their borders, such as Israel and United States, need to identify the sections of the border most likely to be undermined by soil tunnels. In the case of Israel their entire border is susceptible as a result of the favorable arid climate, soils and geology. The US border with Mexico can become vulnerable wherever a new wall is created. Without a wall there is usually no need for soil tunnels. The US Department of Homeland Security and border patrol will need to monitor the noise and vibrations, just like the Israel does, to identify future soil tunnel locations. Eventually most of 3200 km border will have a wall that will become the target of more soil tunnels for smuggling goods and people from Mexico into the United States. 展开更多
关键词 Soil Tunnels Tunnel warfare Undermining SMUGGLING Fortresses UNITED STATES BORDER Wall Israel BORDER Mexico BORDER UNITED STATES BORDER Rio Grande River
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Study on QOS Routing in Network Centric Warfare
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作者 梁永生 张乃通 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2005年第3期250-255,共6页
The concept of network centric warfare (NCW) and the distributed equal-node network architecture in NCW are introduced in this paper. The data flow requirement model in NCW is presented. Based on synthetic analysis ... The concept of network centric warfare (NCW) and the distributed equal-node network architecture in NCW are introduced in this paper. The data flow requirement model in NCW is presented. Based on synthetic analysis of network resource, the QOS (Quality of Service) parameters and their characters, the high requirement of real-time synchronization in NCW, the single QOS routing constraint, and the network latency between the detector and weapon control station, are presented. To take an example for 3-node brigade (regiment) level NCW demonstration platform, the algorithm of end-to-end network latency and path information in NCW are presented. The algorithm program based on Server/Client architecture is developed. The optimal path is the link whose latency between the detector and weapon control station is the smallest. This paper solves the key issue and satisfies the needs on network latency in NCW. The study results can be widely applied in the decision of the optimal path which is based on multiple service provision points. 展开更多
关键词 network centric warfare (NCW) quality of service (QOS) ROUTING network latency latency algorithm optimal path
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A prototype portable instrument employing micro-preconcentrator and FBAR sensor for the detection of chemical warfare agents
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作者 Xu Yan Hemi Qu +2 位作者 Ye Chang Wei Pang Xuexin Duan 《Nanotechnology and Precision Engineering》 CAS CSCD 2022年第1期43-48,共6页
The presence of chemical warfare agents(CWAs)in the environment is a serious threat to human safety,but there are many problems with the currently available detection methods for CWAs.For example,gas chromatography–m... The presence of chemical warfare agents(CWAs)in the environment is a serious threat to human safety,but there are many problems with the currently available detection methods for CWAs.For example,gas chromatography–mass spectrometry cannot be used for in-field detection owing to the rather large size of the equipment required,while commercial sensors have the disadvantages of low sensitivity and poor selectivity.Here,we develop a portable gas sensing instrument for CWA detection that consists of a MEMSfabricated micro-preconcentrator(μPC)and a film bulk acoustic resonator(FBAR)gas sensor.The μPC is coated with a nanoporous metal–organic framework material to enrich the target,while the FBAR provides rapid detection without the need for extra carrier gas.Dimethyl methylphosphonate(DMMP),a simulant of the chemical warfare agent sarin,is used to test the performance of the instrument.Experimental results show that the μPC provides effective sample pretreatment,while the FBAR gas sensor has good sensitivity to DMMP vapor.The combination of μPC and FBAR in one instrument gives full play to their respective advantages,reducing the limit of detection of the analyte.Moreover,both the μPC and the FBAR are fabricated using a CMOS-compatible approach,and the prototype instrument is compact in size with high portability and thus has potential for application to in-field detection of CWAs. 展开更多
关键词 Micro-preconcentrator Film bulk acoustic resonator Chemical warfare agent Microelectromechanical system
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