检索结果-内蒙古大学图书馆

International Conference on Green Communications and Networks, GCN 2011

作者： Xu, Lijun Yang, Xianfeng Chen, Jun Institute of Computer and Information Engineering Xinxiang University Xinxiang 453003 Henan China School of Information Engineer Henan Institute of Science and Technology Xinxiang 453000 Henan China

ISBN: (纸本)9789400721685

information retrieval system for the current over-emphasis on the recall of information, the information retrieved and the user needs not related to most of this limitation, combined with Agent technology has the autonomy, responsiveness, cooperation, learning and other characteristics, to construct an Agent-based personalized search system user model, to provide users with a personalized search service. © 2012 Springer Science+Business Media B.V.

关键词： Search engines

来源：评论

学校读者我要写书评

暂无评论

Inertial Navigation Applications in Navigation and Positioning Research

Inertial Navigation Applications in Navigation and Positioni...

引用

2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Li Shufeng Li Cheng Yu Zhenghua Yan Guangwen Beijing Jiaotong University School of Computer and Information Technology Research & Innovation Institute of Beijing Watchdata System Co. Ltd

ISBN: (纸本)9781467321969

In order to improve the positioning precision and reliability in dead reckoning (DR), a novel algorithm is proposed on the basis of using accelerometers and gyroscopes in inertial navigation systems. The dead reckoning algorithm was validated with measured data and the actual results were compared with the Global Positioning system (GPS) and Real Time Kinematic (RTK) data.

关键词： accelerometers gyroscopes GPS dead reckoning

来源：评论

学校读者我要写书评

暂无评论

Implemention of cyber security situation awareness based on knowledge discovery with trusted computer

Implemention of cyber security situation awareness based on ...

引用

APWeb 2014 Workshops: 1st International Workshop on Social Network Analysis, SNA 2014, 1st International Workshop on Network and information Security, NIS 2014 and 1st International Workshop on Internet of Things Search, IOTS 2014

作者： Jiemei, Zeng Xuewei, Feng Dongxia, Wang Lan, Fang Beijing Aerospace Control Center Beijing 100296 China Beijing Institute of System Engineer National Key Laboratory of Science and Technology on Information System Security Beijing 100101 China

ISBN: (纸本)9783319111186

Situation awareness aims to provide the global security views of the cyberspace for administrators. In this paper, a novel framework of cyber security situation awareness is proposed. The framework is based on a trusted engine, and can be viewed from two perspectives, one is data flow, which presents the abstracting of cyber data, and the other one is logic view, which presents the procedure of situation awareness. The framework's core component is a correlation state machine, which is an extension of state machine, and used to model attack scenarios. The correlation state machine is a data structure of situation awareness, and stored in a trusted computer in order to avoid being tampered. It is created based on the technology of knowledge discovery, and after being created, it can be used to assess and predict the threat situation. We conclude with an example of how the framework can be applied to real world to provide cyber security situation for administrators. © Springer International Publishing Switzerland 2014.

关键词： Trusted computing

来源：评论

学校读者我要写书评

暂无评论

A framework of network security situation analysis based on the technologies of event correlation and situation assessment

A framework of network security situation analysis based on ...

引用

2011 5th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, IMIS 2011

作者： Xuewei, Feng Dongxia, Wang Shanwen, Ke Guoqing, Ma Jin, Li Beijing Institute of System Engineer National Key Laboratory of Science and Technology on Information System Security Beijing 100101 China Xichang Satellite Launch Center Sichuan 615000 China

ISBN: (纸本)9780769543727

After analyzing the existing research of network security situation awareness, a framework of situation analysis is proposed in this paper. It is an application and reification of the classic situation awareness model proposed by Tim bass. The framework is composed of three core contents, namely, situation information model, event correlation analysis technology and situation assessment technology. The information model defines what is situation and how to express them, the other two technologies are the implement means of acquiring these situation information. The hierarchic information model contains four levels: raw security datas, security entities, assessment report, and mission impact. Along with the rising of the model level, the quantity of the information decreases while the quality increases. The correlation technology focuses on achieving the security entities, that is the second level situation information. The situation assessment technology provides methods and means for acquiring the information belongs to the third and the fourth levels, namely, it is the technical guarantee of creating assessment report and mission impact. The framework provides guidance and technical support for the whole situation analysis procedure, and it is the foundation of the analysis work. © 2011 IEEE.

关键词： Network security

来源：评论

学校读者我要写书评

暂无评论

Analyzing and correlating security events using state machine

Analyzing and correlating security events using state machin...

引用

10th IEEE International Conference on computer and information technology, CIT-2010, 7th IEEE International Conference on Embedded Software and systems, ICESS-2010, 10th IEEE Int. Conf. Scalable Computing and Communications, ScalCom-2010

作者： Feng, Xuewei Wang, Dongxia Zeng, Jiemei Ma, Guoqing Li, Jin National Key Laboratory of Science and Technology on Information System Security Beijing Institute of System Engineer Beijing 100101 China Beijing Aerospace Control Center Beijing 100296 China

ISBN: (纸本)9780769541082

It is unfeasible to analyze the security events by the manual way for the security manager, because the number of the events is huge and the information contained in the events is meaningless. After analyzing the existing algorithms of security events correlation, we propose an attack scenario reconstruction technology based on state machine. The processes of attackers intruding into the cyberspace can be restored and the more comprehensive attack scenario description information will be generated using this technology. This working lets the security manager more comfy. The state machine based attack scenario reconstruction technology processes security events using clustering analysis and causal analysis concurrently, it builds a correlation state machine in memory for every attack scenario tree which is predefined by the security manager, when security events are coming, the certain state machines will process them, if the condition is satisfied, an attack scenario description information will be generated and then sent to the security manager. The correlating technology based on state machine is more timely and accurately, and at last, we use the DARPA2000 Intrusion Scenario Specific Data Sets to validate the technology, the experiment results show that it is feasible to analyze security events using the technology we proposed. © 2010 IEEE.

关键词： Managers

来源：评论

学校读者我要写书评

暂无评论

Dual-Tone Radio Interferometric Positioning systems for Multi-Target Localization Using a Single Mobile Anchor

引用

China Communications 2015年第1期12卷 25-35页

作者： LI Li'an WANG Yiyin MA Xiaoli CHEN Cailian GUAN Xinping Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China School of Electrical & Computer Engineering Georgia Institute of Technology

In this paper, a low-cost dualtone radio interferometric positioning system using a single mobile anchor is proposed to locate multiple targets at the same time. We name it mDRIPS. In mDRIPS, each target continuously transmits a dual-tone signal with its dedicated frequencies, and the mobile anchor receives the signals at different positions along its trajectory, Neither time synchronization between the mobile anchor and the targets nor time synchronization among the targets is required. We take the instability of targets clocks into consideration and develop an ESPRIT-type algorithm to estimate frequencies of each dual-tone signal. Furthermore, the time of arrival （TOA） of each target signal is extracted from the phase estimates of the received dual-tone signals. After measuring several TOAs at different locations along the anchor＇s trajectory, each target can be located. Since the frequency difference of the two tones of each dualtone signal is designed to be smaller than the channel coherence bandwidth, the same fading effect on these two tones can be eliminated. Moreover, the integer ambiguity problem due to phase wrapping is investigated, and a localization algorithm to deal with a simplified ambiguity problem is proposed. Numerical results demonstrate the efficiency of the proposed mDRIPS.

关键词： ranging localization mobile anchor radio interferometry oscillator instability

来源：评论

学校读者我要写书评

暂无评论

Modelling and Simulation of COVID-19 Outbreak Prediction Using Supervised Machine Learning

引用

computers, Materials & Continua 2021年第3期66卷 2397-2407页

作者： Rachid Zagrouba Muhammad Adnan Khan Atta-ur-Rahman Muhammad Aamer Saleem Muhammad Faheem Mushtaq Abdur Rehman Muhammad Farhan Khan Department of Computer Information System College of Computer Science and Information TechnologyImam Abdulrahman Bin Faisal UniversityDammam31441Saudi Arabia Department of Computer Science Riphah International UniversityLahore CampusLahore54000Pakistan Hamdard Institute of Engineering and Technology Hamdard UniversityIslamabad44000Pakistan Department of Information Technology Khwaja Fareed University of Engineering and Information TechnologyRahim Yar Khan64200Pakistan School of Computer Science NCBA&ELahore54000Pakistan Department of Forensic Sciences University of Health SciencesLahore54000Pakistan

Novel Coronavirus-19(COVID-19)is a newer type of coronavirus that has not been formally detected in *** is established that this disease often affects people of different age groups,particularly those with body disorders,blood pressure,diabetes,heart problems,or weakened immune *** epidemic of this infection has recently had a huge impact on people around the globe with rising mortality *** levels of mortality are attributed to their transmitting behavior through physical contact between *** is extremely necessary to monitor the transmission of the infection and also to anticipate the early stages of the disease in such a way that the appropriate timing of effective precautionary measures can be *** latest global coronavirus epidemic(COVID-19)has brought new challenges to the scientific *** Intelligence(AI)-motivated methodologies may be useful in predicting the conditions,consequences,and implications of such an *** forecasts may help to monitor and prevent the spread of these *** article proposes a predictive framework incorporating Support Vector Machines(SVM)in the forecasting of a potential outbreak of *** findings indicate that the suggested system outperforms cutting-edge *** method could be used to predict the long-term spread of such an outbreak so that we can implement proactive measures in *** findings of the analyses indicate that the SVM forecasting framework outperformed the Neural Network methods in terms of accuracy and computational *** proposed SVM system model exhibits 98.88%and 96.79%result in terms of accuracy during training and validation respectively.

关键词： Coronavirus outbreak machine learning artificial intelligence

来源：评论

学校读者我要写书评

暂无评论

Compact sequential aggregate signatures

Proceedings of the ACM Symposium on Applied Computing

引用

Proceedings of the ACM Symposium on Applied Computing 2007年 249-253页

作者： Mu, Yi Susilo, Willy Zhu, Huafei School of Information Technology and Computer Science University of Wollongong Wollongong NSW 2522 Australia Department of System and Information Security Institute for Infocomm Research 21 Heng Mui Keng Terrace Singapore Singapore

ISBN: (纸本)1595934804;9781595934802

In this paper, a new notion which we call compact sequential aggregate signatures is introduced and formalized. Informally, a compact sequential aggregate signature states the following thing: for a given message vector m=(m"1, m(ι)), a public key vector PK=(PK"1, PK(ι)) and a path p=(v"1, v(ι)), where vi=(idi, PKi), the size of the third component σ in a sequential aggregate signature (m, p, σ) is independent of the path length ι We propose a novel implementation of RSA-based regular signature scheme that works in an extended domain, and then transform it into a compact sequential aggregate signature scheme that works in a common domain such that the size of overflow bits is independent of the path length ι Finally, we show that our implementation is provably secure in the random oracle model assuming that the RSA problem is hard. Copyright 2007 ACM.

关键词： Electronic document identification systems

来源：评论

学校读者我要写书评

暂无评论

Control of a Quadruped Robot with Bionic Springy Legs in Trotting Gait

引用

Journal of Bionic engineering 2014年第2期11卷 188-198页

作者： Mantian Li Zhenyu Jiang Pengfei Wang Lining Sun Shuzhi Sam Ge State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150001 P. R. China Institute of Intelligent Systems and Information Technology University of Electronic Seience and Technology of China Chengdu 610000 P.R. China Department of Electrical and Computer Engineering the National University of Singapore Singapore 117576 Singapore

Legged robots have better performance on discontinuous terrain than that of wheeled robots. However, the dynamic trotting and balance control of a quadruped robot is still a challenging problem, especially when the robot has multi-joint legs. This paper presents a three-dimensional model of a quadruped robot which has 6 Degrees of Freedom （DOF） on torso and 5 DOF on each leg. On the basis of the Spring-Loaded Inverted Pendulum （SLIP） model, body control algorithm is discussed in the first place to figure out how legs work in 3D trotting. Then, motivated by the principle of joint function separation and introducing certain biological characteristics, two joint coordination approaches are developed to produce the trot and provide balance. The robot reaches the highest speed of 2.0 m.s-1, and keeps balance under 250 Kg.m.s-1 lateral disturbance in the simulations. The effectiveness of these approaches is also verified on a prototype robot which runs to 0.83 m.s-1 on the treadmill, The simulations and experiments show that legged robots have good biological properties, such as the ground reaction force, and spring-like leg behavior.

关键词： legged robots locomotion control quadruped robot trotting gait

来源：评论

学校读者我要写书评

暂无评论

Energy Efficient Relay Positioning and Power Allocation for One-Way N-Relay Channel

引用

Journal of Donghua University(English Edition) 2016年第1期33卷 127-133页

作者：周健朱灿焰王东林季爱明 Institute of Intelligent Structure and System Soochow University Department of Information Engineering Suzhou Global Institute of Software Technology Department of Electricaland Computer Engineering New York Institute of Technology at Nanjing

Two end-users which have symmetric traffic requirements in terms of data rate are considered. They exchange information in Rayleigh flat-fading channels and multiple serial half-duplex relay nodes are employed to extend the communication coverage and assist the bidirectional communication between them using the analog network coding( ANC) protocol. With the objective of minimizing the sum transmit energy at the required data rate c,the optimal relay positioning and power allocation problem is firstly investigated and then the sub-optimal solutions for a two-relay channel are proposed,due to no close-form optimal solution. Furthermore,a sub-optimal scheme of relay positioning and power allocation,called equal-distance equal-transmit-power( EDEP) for an arbitrary Nrelay channel,N > 1 is proposed. Simulation results demonstrate a consistence with our proposed scheme.

关键词： analog network coding(ANC) energy efficient communication relay positioning and power allocation N-relay channel

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：