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A Sensor-Service Collaboration Approach for Target Tracking in Wireless Camera Networks

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china Communications 2017年第7期14卷 44-56页

作者： Shuai Zhao Le Yu state key laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications china Mobile information security Center

Mobile target tracking is a necessary function of some emerging application domains, such as virtual reality, smart home and intelligent healthcare. However, existing portable devices for target tracking are resource intensive and high-cost. Camera tracking is an effective location tracking way for those emerging applications which can reuse the existing ubiquitous video monitoring system. This paper proposes a dynamic community-based camera collaboration(D3C) framework for target location and tracking. The contributions of D3C mainly include that(1) nonlinear perspective projection model is selected as the camera sensing model and sequential Monte Carlo is employed to predict the target location;(2) a dynamic collaboration scheme is proposed, it is based on the local community-detection theory deriving from social network analysis. The performance of proposed approach is validated by both synthetic datasets and real-world application. The experiment results show that D3C meets the versatility, real-time and fault tolerance requirements of target tracking applications.

关键词： service collaboration camera tracking community detection sequential monte carlo

Privilege Flow Oriented Intrusion Detection Based on Hidden Semi-Markov Model

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Privilege Flow Oriented Intrusion Detection Based on Hidden ...

GIS and ANN model for landslide susceptibility mapping

The 1st chinese Conference on Trusted Computing and information security

作者： ZHONG An-ming, JIA Chun-fu College of information Technology and sciences. Nankai University. Tianjin 300071 .china state key laboratory of information security, institute of software of chinese academy of science, beijing 100039,china

＜正＞ A privilege flow oriented intrusion detection method based on HSMM （ Hidden semi-Markov Model） is discussed. The privilege flow model and HSMM are incorporated in the implementation of an anomaly detection IDS （Intrusion Detection System）. Using the data set of DARPA 1998, our experiment results reveal good detection performance and acceptable computation cost.

关键词： intrusion detection privilege flow model HSMM

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Journal of Geographical sciences 2001年第3期11卷 374-381页

作者： XU Zeng-wang (state key laboratory of Resources and Environment information System, institute of Geographic sciences and Natural Resources Research, CAS, beijing 100101, china) state key laboratory of Resources and Environment information System Institute of Geographic Sciences and Natural Resources Research CAS

Landslide hazard is as the probability of occurrence of a potentially damaging landslide phenomenon within specified period of time and within a given area. The susceptibility map provides the relative spatial probability of landslides occurrence. A study is presented of the application of GIS and artificial neural network model to landslide susceptibility mapping, with particular reference to landslides on natural terrain in this paper. The method has been applied to Lantau Island, the largest outlying island within the territory of Hong Kong. A three-level neural network model was constructed and trained by the back-propagate algorithm in the geographical database of the study area. The data in the database includes digital elevation modal and its derivatives, landslides distribution and their attributes, superficial geological maps, vegetation cover, the raingauges distribution and their 14 years 5-minute observation. Based on field inspection and analysis of correlation between terrain variables and landslides frequency, lithology, vegetation cover, slope gradient, slope aspect, slope curvature, elevation, the characteristic value, the rainstorms corresponding to the landslide, and distance to drainage Une are considered to be related to landslide susceptibility in this study. The artificial neural network is then coupled with the ArcView3.2 GIS software to produce the landslide susceptibility map, which classifies the susceptibility into three levels: low, moderate, and high. The results from this study indicate that GIS coupled with artificial neural network model is a flexible and powerful approach to identify the spatial probability of hazards.

关键词： GIS artificial neural network model landslide susceptibility mapping

Novel encryption model for multimedia data

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Journal of Systems Engineering and Electronics 2009年第5期20卷 1081-1085页

作者： Ye Dengpan~(1,2) & Lian Shiguo~3 1.The key laboratory of Aerospace information security and Trust Computing,Ministry of Education,Wuhan 430072,P.R.china 2.School of Computer science,Wuhan Univ.,Wuhan 430072,P.R.china 3.France Telecom R&D beijing,beijing 100080,P.R.china The key laboratory of Aerospace information security and Trust Computing Ministry of Education Wuhan 430072 P. R. China School of Computer Science Wuhan Univ. Wuhan 430072 P. R. China France Telecom R&D beijing Beijing 100080 P. R. China

A novel encryption model is proposed. It combines encryption process with compression process, and realizes compression and encryption at the same time. The model＇s feasibility and security are analyzed in detail. An... 详细信息

关键词： multimedia encryption model compression feasibility security.

A heuristic algorithm for cube packing with time schedule

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science china(information sciences) 2010年第1期53卷 18-29页

作者： LI Wei1, HUANG WenQi2, JIANG DongChen1 & LIU XiangLong1 1state key laboratory of software Development Environment, Beihang University, beijing 100191, china 2School of Computer science and Technology, Huazhong University of science and Technology, Wuhan 430074, china 1. state key laboratory of software Development Environment Beihang University Beijing 100191 China2. School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

Packing problem has been proved to be an NP-hard problem. Many algorithms such as simulation annealing algorithm, genetic algorithm and other heuristic algorithms have been proposed to solve twodimensional and three-dimensional packing problem. To solve the cube packing problem with time schedule, this paper first introduces some concepts such as packing level, space distance and average neighbor birth order and then proposes a greedy algorithm. The algorithm tries every feasible corner greedily to calculate the space utilization, packing level, space distance, average neighbor birth order of this placement, and chooses the best placement according to these criteria. Theoretical analysis indicates that the time complexity of this algorithm is O(A2B2C2T 2n5). The experiments show that the average space utilization of non-guillotine cutting test cases is 98.81%, and the average space utilization of guillotine cutting test cases achieves 99.87%. Furthermore, optimal solutions of more than half cases are achieved by this algorithm. The experimental results show that this algorithm can solve the problem of cube packing with time schedule effectively and effciently.

关键词： cube packing problem time schedule packing level space distance average neighbor birth order

Measuring-basis-encrypted six-state quantum key distribution scheme

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Progress in Natural science:Materials International 2006年第1期16卷 84-89页

作者： CHEN Pan1, DENG Fuguo1, WANG Pingxiao1 and LONG Guilu1,2 (key laboratory for Quantum information and Measurements and Department of Physics, Tsinghua University, beijing 100084, china 2. key laboratory for Atomic and Molecular Nanosciences, Tsinghua University, beijing 100084, china) [a]Department of Physics Tsinghua University Key Laboratory for Quantum Information and Measurements Beijing China [b]Tsinghua University Key Laboratory for Atomic and Molecular NanoSciences Beijing China

A six-state quantum key distribution scheme with measuring-basis encryption technique, which is based on the six-state protocol and the MBE protocol, is proposed. In this modified six-state quantum key distribution protocol, Alice and Bob use a control key to synchronize the use of their measuring-basis so that they always use the same measuring-basis. This modified six-state quantum key distribution protocol retains the advantage of higher security and at the same time has a higher efficiency.

关键词： quantum key distribution measuring-basis encrypted six-state security.

Digital earth, Virtual Reality and urban seismic disaster simulation

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Journal of Geographical sciences 2000年第2期10卷 119-128页

作者： HE Jian-bang, HU Zhi-yong, YE Ze-tian, LI Hui-guo, WANG Jin-feng (state key laboratory of Resources & Environment information Systems, chinese academy of sciences, beijing 100101, china)

US Vice President Al Gore's vision of Digital Earth applies us with prospects for brand-new ways of solving problems the earth is facing such as seismic disaster. ms paper first briefly introduces the concept of Digital Earth. Then in the context of Digital Earth. the Origin, concept and application of Virtual Reality technology are reviewed. After that we present in detail our preliminary case study--CVR-USD (Computer Virtual Reality for Urban Seismic Disaster Simulation) System which aims to simulate and manage seismic disaster through integrating RS, GIS and VR technologies. For this system, we've built USD subsystem, developed SMVR software to implement CVR. and also developed a Spatial Dare Analysis Package to handle spatial data related to earthquake disaster.

关键词： Digital Earth, Virtual Reality seismic disaster simulation remote sensing, GIS

The Study and Perspective of Mobile Agent security

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The Journal of china Universities of Posts and Telecommunications 2004年第4期11卷 48-53页

作者： MU Honga~1 WANG Ru-chuan~(1,2) WANG Hai-yan~11.Department of Computer science and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,P.R.china 2.state key laboratory of information security(Graduate School of chinese Aeademy of sciences),beijing 100039,P.R.china Department of Computer science and Technology Nanjing University of Posts and Telecommunications Nanjing 210003

security is an important issue for the widespread deployment of applications based on software agent *** is generally agreed that without the proper countermeasures in place,use of agent-based applications will be *** many projects have focused on the security issues of mobile agent and many mechanisms have been proposed tosolve the security *** paper discusses the security issues and the *** it points out some direc-tions for the research of the mobile agent security.

关键词： mobile agent mobile code security cryptography

Construction of Resilient Functions

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Construction of Resilient Functions