检索结果-内蒙古大学图书馆

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2007年 4743 LNCS卷 XI-XII页

作者： Yang, Laurence T. Guo, Minyi Hsu, Ching-Hsien Park, Jong Hyuk Wang, Cho-Li Pan, Gang

No abstract available

ISBN: (纸本)9783540747666

No abstract available

关键词：

来源：评论

学校读者我要写书评

暂无评论

Use of binary logistic regression technique with Modis data to estimate Wild Fire Risk

Use of binary logistic regression technique with Modis data ...

引用

5th international symposium on Multispectral Image Processing and Pattern Recognition

作者： Fan, Hong Di, Liping Yang, Wenli Bonnlander, Brian Li, Xiaoyan George Mason Univ CSISS 6301 Ivy LaneSuite 620 Greenbelt MD 20770 USA Wuhan Univ Natl Lab Informat Engn Surveying Mapping & Remote Sensing Wuhan 430079 Peoples R China Florida Inst Human & Machine Cognit Pensacola FL 32502 USA

ISBN: (纸本)9780819469502

Many forest fires occur across the globe each year, which destroy life and property, and strongly impact ecosystems. In recent years, wildland fires and altered fire disturbance regimes have become a significant management and science problem affecting ecosystems and wildland/urban interface cross the United States and global. In this paper, we discuss the estimation of 504 probability models for forecasting fire risk for 14 fuel types, 12 months, one day/week/month in advance, which use 19 years of historical fire data in addition to meteorological and vegetation variables. MODIS land products are utilized as a major data source, and a logistical binary regression was adopted to solve fire forecast probability. In order to better modeling the change of fire risk along with the transition of seasons, some spatial and temporal stratification strategies were applied. In order to explore the possibilities of real time prediction, the Matlab distributing computing toolbox was used to accelerate the prediction. Finally, this study give an evaluation and validation of predict based on the ground truth collected. Validating results indicate these fire risk models have achieved nearly 70% accuracy of prediction and as well MODIS data are potential data source to implement near real-time fire risk prediction.

关键词： fire risk forecast binary logistic regression ROC evaluation MODIS distributed computing

来源：评论

学校读者我要写书评

暂无评论

Implementation and Performance Evaluation of Socket and RMI based Java Message Passing Systems

Implementation and Performance Evaluation of Socket and RMI ...

引用

international Conference on Software Engineering Research, Management and Applications (SERA)

作者： SeungJun Bang JinHo Ahn Kyonggi University Suwonsi Kyonggido Korea

Recently, as speeds of computer processors and networks are rapidly increasing, a lot of researches are actively progressing to develop efficient and lightweight parallel computing platforms using heterogeneous and networked computers. According to this technical trend, this paper designs and implements a message passing library called JMPI(Java Message Passing Interface) which complies with MP], the MPI standard specification for Java language. this library provides some graphic user interface tools to enable parallel computing environments to be configured very simply by their administrators and JMPI applications to be executed very conveniently. Especially, it is implemented as two versions based on two typical distributed system communication mechanisms, Socket and RMI. According to these communication mechanisms, the performance of each message passing system is evaluated by measuring its processing speed with respect to the increasing number of computers by executing three well-known applications. Experimental results show that the most efficient processing speedup can be obtained by increasing the number of the computers in consideration of network traffics generated by applications.

关键词： Sockets Java Message passing Computer networks Application software Concurrent computing parallel processing Libraries Computer graphics User interfaces

来源：评论

学校读者我要写书评

暂无评论

Non-Manipulable Aggregator Node Election Protocols for Wireless Sensor Networks

Non-Manipulable Aggregator Node Election Protocols for Wirel...

引用

international symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)

作者： Michael Sirivianos Dirk Westhoff Frederik Armknecht Joao Girao University of California Irvine USA NEC Europe Ltd. dirk.westhoff@netlab.nec.de NEC Europe Ltd. frederik.armknecht@netlab.nec.de NEC Europe Ltd. joao.girao@netlab.nec.de

Aggregator nodes commonly have the ability to read, corrupt or disrupt the flow of information produced by a wireless sensor network (WSN). Despite this fact, existing aggregator node election schemes do not address an adversary that strives to influence the election process towards candidate nodes that it controls. We discuss the requirements that need to be fulfilled by a non-manipulable aggregator node election protocol. We conclude that these requirements can be satisfied by a distributed random number generator function in which no node is able to determine the output of the function. We provide and compare three protocols that instantiate such function.

关键词： Nominations and elections Wireless application protocol Wireless sensor networks Peer to peer computing Cryptographic protocols Microsensors Energy states Energy consumption National electric code Europe

来源：评论

学校读者我要写书评

暂无评论

Cooperation and Directionality: A Co-opdirectional MAC for Wireless Ad Hoc Networks

Cooperation and Directionality: A Co-opdirectional MAC for W...

引用

international symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)

作者： Zhifeng Tao thanasis Korakis Yevgeniy Slutskiy Shivendra Panwar Leandros Tassiulas Mitsubishi Electric Research Laboratories Cambridge MA USA Department of Electrical and Computer Engineering Polytechnic University Brooklyn NY USA Department of Electrical Engineering Columbia University New York NY USA Department of Electrical and Computer Engineering Polytechnic University Brooklyn NY Computer Engineering and Telecommunications Department University of Thessaly Volos Greece

Advances in cooperative communications and directional antenna design so far have taken place in parallel, if not in isolation from each other. To explore the role they may play in the next generation of wireless networks, it is important to design and evaluate protocols that can provide co-opdirectionality, the capability of tapping into the combined potential of both cooperation and transmission directionality. Inspired by the protocols presented in [1] and [2], we propose a novel co-opdirectional MAC that fully leverages both cooperation diversity and transmission directionality1. Special attention has been paid to the protocol design so that the new MAC would not only inherit the advantages of two previous protocols, but also avoid their weaknesses in the wireless ad hoc environment. the protocol thus delivers a superior performance, as our extensive simulations confirm. To the best knowledge of the authors, this paper represents the first effort to deal with the challenges of integrating cooperation and directional capabilities at the MAC layer.

关键词： Mobile ad hoc networks Media Access Protocol Wireless application protocol Directional antennas Next generation networking Wireless networks Physical layer Technological innovation Computer networks Concurrent computing

来源：评论

学校读者我要写书评

暂无评论

Improving Downlink UMTS Capacity by Exploiting Direct Mobile-to-Mobile Data Transfer

Improving Downlink UMTS Capacity by Exploiting Direct Mobile...

引用

international symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)

作者： Larissa Popova thomas Herpel Wolfgang Koch University of Erlangen Nuremberg Germany

the goal of this work is to analyze the feasibility of a peer-to-peer file sharing technique in mobile cellular environments, taking into account key characteristics and peculiarities of the UMTS radio access network (UTRAN). the concept is referred here to as mobile-to-mobile (m2m). Our research efforts explore the performance benefits of m2m file sharing applications in UMTS networks in terms of releasing overall downlink capacity. In our concept the users that are interested in downloading a popular file form a mobile cooperative community and using the fact that traffic load of multimedia services is asymmetrically distributed between uplink and downlink, contribute their own currently not used uplink capacity for providing the packets of the content to other users within the group in multicast mode on the uplink carrier frequencies. As a result a major part of the traffic is shifted away from the downlink, making the released downlink capacity available for providing better quality of service (QoS) for real-time services. Two alternative scenarios of serving user requests (m2m and conventional UMTS mode) have been analyzed. the results indicate a dramatic increase in service probability and overall throughput gain of up to 85 % in a UMTS network, supported by the m2m data transmission mode. Furthermore, results show that by a well-designed m2m routing policy and proper utilization of uplink resources substantial reduction of the expected file download time can be achieved.

关键词： Downlink 3G mobile communication Peer to peer computing Quality of service Cellular networks Radio access networks Telecommunication traffic Frequency throughput Data communication

来源：评论

学校读者我要写书评

暂无评论

Mobile parallel computing

Mobile parallel computing

引用

5th international symposium on parallel and distributed computing

作者： Doolan, Daniel C. Tabirca, Sabin Yang, Laurence T. Natl Univ Ireland Univ Coll Cork Dept Comp Sci Cork Ireland St Francis Xavier Univ Dept Comp Sci Antigonish NS B2G 2W5 Canada

ISBN: (纸本)0769526381

this paper outlines how the Mobile Message Passing Interface (MMPI) may be used for parallel computation. MMPI allows parallel programming of mobile devices over a Bluetooth network. this paper gives an overview of the MMPI library, and demonstrates that mobile devices are capable of parallel computation. An example of Matrix Multiplication O(n(3)) is used to show this.

关键词： parallel processing systems

来源：评论

学校读者我要写书评

暂无评论

distributed formulation of artificial reconstruction technique with reordering of critical data sets\

Distributed formulation of artificial reconstruction techniq...

引用

5th international symposium on parallel and distributed computing

作者： Butrylo, Boguslaw Tudruj, Marek Masko, Lukasz Bialystok Tech Univ Ul Wiejska 45A PL-15351 Bialystok Poland Polish Acad Sci Inst Comp Sci PL-01237 Warsaw Poland Polish Japanese Inst Informat Technol PL-02008 Warsaw Poland

ISBN: (纸本)0769526381

this paper discusses iterative algorithms for reconstruction of 2D images. the formulation of the distributed algorithm and its properties are described. the details of the distributed implementation of the ART (Algebraic Reconstruction Technique) are presented. parallel implementation in a parallel system based on dynamically configurable clusters is proposed.

关键词： Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

parallel and distributed computing with Java

Parallel and distributed computing with Java

引用

5th international symposium on parallel and distributed computing

作者： Baker, Mark A. Grove, Matthew Shafi, Aamir Univ Reading Sch Syst Engn Reading RG6 6AY Berks England Univ Portsmouth DSG Portsmouth PO1 2UP Hants England

ISBN: (纸本)0769526381

the Java language first came to public attention in 1995. Within a year, it was being speculated that Java may be a good language for parallel and distributed computing. Its core features, including being objected oriented and platform independence, as well as having built-in network support and threads, has encouraged this view. Today, Java is being used in almost every type of computer-based system, ranging from sensor networks to high performance computing platforms, and from enterprise applications through to complex ***. In this paper the key features that make Java a good language for parallel and distributed computing are first discussed. Two Java-based middleware systems, namely MPJ Express, an MPI-like Java messaging system, and Tycho, a wide-area asynchronous messaging framework with an integrated virtual registry are then discussed. the paper concludes by highlighting the advantages of using Java as middleware to support distributed applications.

关键词： distributed computer systems

来源：评论

学校读者我要写书评

暂无评论

An agent-based approach to grid service monitoring

An agent-based approach to grid service monitoring

引用

5th international symposium on parallel and distributed computing

作者： Rochford, Keith Coghlan, Brian Walsh, John Univ Dublin Trinity Coll Dept Comp Sci Dublin 2 Ireland

ISBN: (纸本)0769526381

the centralised management of distributed computing infrastructures presents a number of considerable challenges, not least of which is the effective monitoring of physical resources and middleware components to provide an accurate operational picture for use by administrative or management staff. the detection and presentation of real-time information pertaining to the performance and availability of computing resources is a difficult yet critical activity. this architecture is intended to enhance the service monitoring experience of a Grid operations team. We have designed and implemented an extensible agent-based architecture capable of detecting and aggregating status information using low-level sensors, functionality tests and existing information systems. To date it has been successfully deployed across eighteen Grid-Ireland sites.

关键词： Grid computing

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：