检索结果-内蒙古大学图书馆

International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： Guofu Feng Yuxing Sun WenZhong Li Sanglu Lu School of Information Science Nanjing Audit University Nanjing P.R. China State Key Lab. for Novel Software Technology Nanjing University Nanjing P.R. China

Heterogeneity among users is the main concern in building the unstructured P2P topology. However, the related algorithms either only pay attention to the weight heterogeneity in hitting the queries to improve the search success rate, or think much of the capability heterogeneity in data transmission to achieve load-balancing or high throughput. Because the search and transmission are two inseparable stages in an application, they perhaps do not work well in the real applications. The peers with high weight are easily overloaded, and the outstanding peers in data transmission may suffer from the deficiency in requests. Therefore, the optimization only in success rate does not simultaneously mean the optimization in throughput, and vice versa. In this paper an optimization solution of overlay network, ABAO (Adaptive Bandwidth-Aware Overlay), is proposed. In ABAO, the factors of weight heterogeneity in hitting requests and the capability heterogeneity in data transmission are both considered. The connections are adaptively adjusted with low cost according to the availab.e bandwidth and the availab.e requests. Accordingly the throughput can be improved to serve more customers. Our simulations show that our method can improve the system throughput as much as 22%.

关键词： Throughput Peer to peer computing Bandwidth Topology Network topology Data communication Optimization

来源：评论

学校读者我要写书评

暂无评论

On the channel capacity of MIMO Rayleigh-Lognormal fading channel

On the channel capacity of MIMO Rayleigh-Lognormal fading ch...

引用

2010 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2010

作者： Shen, Dongya Lu, Anxian Cui, Yanni Kuang, Fuqiang Zhang, Xiupu Wu, Ke Yao, Jianping School of Information Science and Eng. Yunnan University Kunming China State Key Lab. of Millimeter Waves of China Nanjing 210096 China Dept. of Electrical and Computer Eng. University of Concordia Montreal Canada Dept. of Electrical Engineering University of Montreal Montreal Canada School of Information Technology and Eng. University of Ottawa Ottawa Canada

ISBN: (纸本)9781424457052

The capacity of multiple input multiple output (MIMO) system over wireless channels has been investigated analytically and by simulation over different types of wireless fading channels, such as Rayleigh, Ricain and Nakagami fading channels. This paper paper first investigates the channel capacity of the MIMO channels over the Rayleigh-Lognormal fading channel. The paper derives the analytic expression of channel capacity n of the MIMO Rayleigh-Lognormal fading channel in integral form, gives the Eigenvalue Probability Density Function (PDF) of the MIMO Rayleigh-Lognormal fading channel. Numerical calculation for the channel capacity of MIMO Rayleigh-Lognormal fading channel is explored using two numerical calculation methods, Gaussian-Laguerre numerical integration and Gaussian-Hermite numerical integration. © 2010 IEEE.

关键词： Channel capacity

来源：评论

学校读者我要写书评

暂无评论

Design and implementation of a kind of EUPS for mobile service

引用

Journal of Information and Computational science 2010年第11期7卷 2248-2257页

作者： Zhang, Xiaodan Zhang, Degan Qiao, Xiaodong Liang, Bing Peng, Hongtao Institute of Scientific and Technical Information of China Beijing 100038 China Tianjin Key Lab. of Intelligent Computing and Novel software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China Beijing Petroleum Managers Training Institute Beijing 100096 China

In order to support mobile service of long-distance monitoring and controlling UPS based on Web, a kind of design and implementation solution of embedded UPS (EUPS) system is brought forward in this paper. The design and implementation of system is based on ATmega161 and RTL8019AS with TCP/IP protocol suite for communication. In the EUPS system, an embedded file system is designed and implemented which can store the data and index information on a serial EEPROM chip in structured way and communicate with MCU through I2C bus. By embedding the file system into UPS system or other information appliances, users can browse and manipulate local data on the web client side. Based on our experimental tests, the performance of EUPS can meet the requirements of Web-based mobile services. © 2010 Binary Information Press.

关键词： Websites

来源：评论

学校读者我要写书评

暂无评论

High level architecture evolved modular federation object model

引用

Journal of systems Engineering and Electronics 2009年第3期20卷 625-635页

作者： Wang Wenguang Xu Yongping Chen Xinx Chen Xin Li Qun Wang Weiping Coll. of Information System and Management National Univ. of Defense Technology Changsha 410073 P. R. China Beijing Key Lab. of Intelligent Telecommunications Software and Multimedia Beijing Univ. of Posts and Telecommunications Beijing 100876 P. R. China State Key Lab. for Complex Systems Simulation Beijing 100101 P. R. China

To improve the agility, dynamics, composability, reusability, and development efficiency restricted by monolithic federation object model （FOM）, a modular FOM is proposed by high level architecture （HLA） evolved product development group. This paper reviews the state-of-the-art of HLA evolved modular FOM. In particular, related concepts, the overall impact on HLA standards, extension principles, and merging processes are discussed. Also permitted and restricted combinations, and merging rules are provided, and the influence on HLA interface specification is given. The comparison between modular FOM and base object model （BOM） is performed to illustrate the importance of their combination. The applications of modular FOM are summarized. Finally, the significance to facilitate compoable simulation both in academia and practice is presented and future directions are pointed out.

关键词： model federation object model review modular federation object model base object model composability high level architecture evolved simulation.

来源：评论

学校读者我要写书评

暂无评论

TACS: A transparent application bandwidth management system

TACS: A transparent application bandwidth management system

引用

IEEE 9th International Conference on computer and Information Technology, CIT 2009

作者： Chen, Xianqin Long, Xiang Gao, Xiaopeng Ma, Junjie State Key Lab. of Virtual Reality Technology and System School of Computer Science and Technology Beijing University of Aeronautics and Astronautics Beijing 100191 China

ISBN: (纸本)9780769538365

With the rapid advance of computer and network technology, more and more applications are deployed in the customer-side network. These applications require different quality of service (QoS), but have to share a few bandwidth limited internet connections. Owing to the IP network's best-effort delivery mechanism, the QoS requirements are hard to be satisfied. There have been plenty of QoS solutions in research and industry areas, however, few of them are easy to understand or to deploy. Therefore, we provide a solution, based on a simple and clear model, has the ability of transparently deployed at the inner side of customer's gateway device and controlled in the application-oriented way. We also introduce a straightforward QoS policy definition language to allow user to create QoS rules for various applications. We conduct the evaluation of our proto type system running upon mid-end industrial personal computer under both the lab.testbed and the practical network. In the lab.test, our system achieves 200Mbps throughput, in the practical field test, our system successfully manages a 100Mbps internet link for over 3000 active users. © 2009 IEEE.

关键词： Quality of service

来源：评论

学校读者我要写书评

暂无评论

Study on tourism emergency attribute reduction based on rough set

Study on tourism emergency attribute reduction based on roug...

引用

2009 International Conference on Computational Intelligence and software Engineering, CiSE 2009

作者： Gao, Tian Du, Junping Wang, Su Beijing Key Lab. of Intelligent Telecommunication Software and Multimedia School of Computer Science Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781424445073

This paper describes attribute extraction, attribute classification and data cleaning process in tourism emergency, builds a widely applicable decision table, and uses the attribute reduction algorithm based on the importance of Pawlak property. The results proves that the decision table after reduction is more beneficial to obtain useful decision rules, on the premise of maintaining constant dependence of condition attributes and decision attributes. ©2009 IEEE.

关键词： Decision tables

来源：评论

学校读者我要写书评

暂无评论

Research on remote sensing image retrieval based on geographical and semantic features

Research on remote sensing image retrieval based on geograph...

引用

2009 International Conference on Image Analysis and Signal Processing, IASP 2009

作者： Wei, Li Wang, Weihong Lu, Feng Software College Zhejiang University of Technology Hangzhou China State Key Lab. of Resources and Environmental Information System CAS Beijing China

ISBN: (纸本)9781424439867

Based on geographical and semantic features of remote sensing image, the paper presents a universal remote sensing image data model, and analyzes the logical structure and storage methods of this model. Based on the model, the paper puts forward a remote sensing image retrieval method, and makes analysis of the process of remote sensing image retrieval. At last, on basis of computer and database technology, the method is tested;the test results confirm the validity of the approach. ©2009 IEEE.

关键词： Image retrieval

来源：评论

学校读者我要写书评

暂无评论

A PSO algorithm based on orthogonal test design

A PSO algorithm based on orthogonal test design

引用

5th International Conference on Natural Computation, ICNC 2009

作者： Wang, Shu Chen, Ling Department of Computer Science Yangzhou University Yangzhou 225009 China State Key Lab. of Novel Software Technology Nanjing University Nanjing 210093 China

ISBN: (纸本)9780769537368

We present a particle swarm optimization algorithm OT-PSO using orthogonal test technique. Based on the classical PSO, OT-PSO searches for local optimum in the neighbor area of the global best solution by using the method of orthogonal test design. OT-PSO can probe the solutions uniformly distributed in the search space and select the better ones. Using those better solutions OT-PSO can guide the particles searching towards the correct direction in the latter iterations so as to speed up the convergence, get more precise solutions and avoid local optimum. Our experimental results show that OT-PSO algorithm not only has faster convergence speed, but also can improve the accuracy of solutions effectively and enhance the robustness of the algorithm. © 2009 IEEE.

关键词： Particle swarm optimization (PSO)

来源：评论

学校读者我要写书评

暂无评论

Metrics of graph abstraction for component-based software architecture

Metrics of graph abstraction for component-based software ar...

引用

2009 WRI World Congress on computer science and Information Engineering, CSIE 2009

作者： Guo, Wei Xiong, Zhong-Wei Xu, Ren-Zuo College of Mathematics and Computer Science Jianghan University Wuhan 430072 China State Key Lab. of Software Engineering Wuhan University Wuhan 430072 China

ISBN: (纸本)9780769535074

The challenges for building the component-based software architecture are how to estimate the assembly of reusable software components and make the properties forecast to the associated architecture. To address these issues, this paper discerns the assembly patterns of components and proposes using graph theory to depict the component-based architecture at first. Then, the component assembly graph has been defined as the abstract representation of the component assembly in the architecture, which is a key factor in determining the suitable architectural structure. Based on such graph theory, some metrics have been defined to measure the components assembly. At the end, the paper discusses how to optimize the architecture from component level, which also shows the graph theory should be paid attention to for the software engineering in future. © 2008 IEEE.

关键词： Graph theory

来源：评论

学校读者我要写书评

暂无评论

Research on unified network access control architecture

Research on unified network access control architecture

引用

IEEE 9th International Conference on computer and Information Technology, CIT 2009

作者： Liu, Yabin Zhang, Huanguo Zhang, Liqiang Zhao, Bo Computer School Wuhan University Wuhan Hubei China Key Lab. of Aerospace Information Security and Trusted Computing MOE Wuhan Hubei China State Key Lab. of Software Engineering Wuhan University Wuhan Hubei China

ISBN: (纸本)9780769538365

Border access control, network security mechanism and system access control are three separately access control procedures when user accessing the resource on network. Network access control mechanism, which adding the authentication of endpoint's platform besides the classical identity-based border access control, enhances the level of protection for network resources to some extent. In the existing network access control mechanisms, TNC has been trying to integrate the network access control mechanism and network security mechanism to add dynamic characteristics, but still can not cover the whole resource access control process. Once a user passes the authentication, he can still make damage to the system. This paper proposes a Unified Network Access Control (UNAC) architecture which effectively integrates the network access control, network security mechanism and system access control through the trust degree, and it can achieve dynamically user control during the resource accessing period. © 2009 IEEE.

关键词： Authentication

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：