检索结果-内蒙古大学图书馆

18th International Conference on Advanced Information Networking and Applications

作者： Kim, KH Univ Calif Irvine DREAM Lab Dept EECS Irvine CA 92697 USA

ISBN: (纸本)0769520510

Wide area network (WAN) -based distributed computing (DC) has become an active field of research, especially under the label of grid computing. On the other hand, research on WAN-based real-time (RT) DC has remained in an embryonic stage. The situation is changing, however. Continuous increase in the availability of optical channels, called lambdas, along with steady decrease of their costs, have given rise to efforts to establish optical network infrastructure in which the possibility of dynamically allocating entire end-to-end light-paths to different message streams created by a moderate number of important applications is real. With such infrastructure there is no major obstacle in facilitating RT DC. The notion of RT distributed virtual computer (DVC), which can also be viewed as an RT sub-grid, is introduced. Then the challenging issues in adapting some promising technologies established for RT DC in LAN environments to enable realization of RT DVCs in WAN environments are discussed. programming model and resource management are the focus of the discussion.

关键词： real time grid optical network wide area WAN latency guaranteed bandwidth resource management programming model global time object TMO

来源：评论

学校读者我要写书评

暂无评论

Fundamental research challenges in real-time distributed computing

Fundamental research challenges in real-time distributed com...

引用

10th IEEE International Workshop on Future Trends of Distributed Computing Systems (FTDCS 2004)

作者： Kim, KH Univ Calif Irvine Dept EECS DREAM Lab Irvine CA 92697 USA

ISBN: (纸本)0769521185

The author presents a personal perspective on where research efforts are most urgently needed to advance the fundamental foundation for real-time distributed computing. At the top level the biggest fundamental research challenge is to enable high-level high-precision real-time distributed software design and programming accompanied by cost-effective guaranteeing of acceptable response times. This top-level goal cannot be realized without successful development of some key component technologies such as programming model and API and middleware possessing effective resource management capabilities. The state of the art and the promising research directions established by the community in those component technology areas are reviewed. The main type of network environments in which real-time computing applications have been realized are the LAN environments. Newly emerging network environments such as sensor networks at one end and optical grids at the other end add additional dimensions to the challenges posed to the research community. Those additional dimensions are also briefly reviewed.

关键词： real time distributed computing grid object LAN WAN sensor latency guarantee response times resource management programming model global time high level coordination

来源：评论

学校读者我要写书评

暂无评论

On the model of OoS multicast routing problems in active networks

On the model of OoS multicast routing problems in active net...

引用

2nd International Conference on Computer Networks and Mobile Computing

作者： Yu, ZW Pan, Y Wang, LC China Univ Min & Technol Beijing Beijing 100083 Peoples R China

ISBN: (纸本)0769520332

In this paper, we propose the concept of order of services (OoS) and construct the programming model of OoS multicast routing in active networks. We also give methods to assure services and to compute the violation degree of OoS. Then, based on an improved prufer encoding method, we design a novel genetic algorithm for the new model. The complexities of encoding and decoding of our algorithm do not exceed O(n(2)). A great number of numerical experiments suggest that our algorithm is feasible and efficient.

关键词： active networks genetic algorithms telecommunication network routing encoding multicast communication OoS order of services multicast routing active networks programming model violation degree prufer encoding method genetic algorithm

来源：评论

学校读者我要写书评

暂无评论

programming model for concept learning and its solution based on genetic algorithms

Programming model for concept learning and its solution base...

引用

3rd World Congress on Intelligent Control and Automation

作者： Li, MQ Kou, JS Zhou, J Tianjin Univ Inst Syst Engn Tianjin 300072 Peoples R China

ISBN: (纸本)7312012035

Learning from examples is an important branch of inductive learning, and is also the bottle-neck in concepts extraction of machine learning. Based on inductive learning theory, this paper applies combinatorial optimization method to setup the programming models of learning concepts of the prepositional logic formulas in the conjunctive normal form (CNF) and disjunctive normal form (DNF). Then, genetic algorithms (GA), specified to CNF learning, is designed. GA can find the multiple optimal solution in theory and practice, and experiments reveal that it runs more efficiently compared with heuristic algorithms of the GS type.

关键词： inductive learning programming model knowledge acquisition genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Applications on a multithreaded architecture: A case study with EARTH-MANNA

引用

PARALLEL COMPUTING 2002年第1期28卷 3-33页

作者： Sodan, AC GMD First Berlin Germany

Multithreading offers benefits with respect to the formulation of irregular dynamic programs and their dynamic scheduling, load balancing and interaction. Furthermore, low-cost communication on distributed-memory machines by remote-memory access is provided by some systems for efficient communication. EARTH is one of the few systems which combines both, while most other systems either focus on communication or provide multithreading in shared-memory environments. Dynamic irregular applications are often awkward to parallelize on distributed memory when using SPMD style programming via MPI and show different requirements for formulation. In addition, dynamic irregular applications also may show a fairly tight data coupling. Systems like EARTH are beneficial then, because they specifically support large number of small data exchanges by providing short startup times and the tolerance of even small latencies (offering very fine-grain threads). However, static regular applications with tight data coupling are supported too. On the example of EARTH, this paper investigates the benefits of low-cost communication and multithreading, parallelizing three AI applications with medium to high communication intensity. We present experimental results obtained on the MANNA machine. (C) 2002 Elsevier Science B.V. All rights reserved.

关键词： multithreading latency reduction latency hiding programming model irregular dynamic applications

来源：评论

学校读者我要写书评

暂无评论

Mapping applications of cellular automata into applications of cellular automata networks

引用

COMPUTER PHYSICS COMMUNICATIONS 2002年第1-2期147卷 724-728页

作者： Calidonna, CR Di Gregorio, S Furnari, MM CNR Ist Cibernet Eduardo Caianiello I-80078 Pozzuoli NA Italy Univ Calabria Dipartimento Matemat I-87036 Arcavacata Di Rende CS Italy

Cellular automata proved to be a promising model to simulate several complex systems: the requirement is that space and time, taken into account, have to be discretizable, while the system to be simulated has to satisfy locality and uniformity in the evolutionary space. Often, in dealing with the simulation of real complex systems some properties of locality are lost and consequently standard CA model application is very difficult. For this reason it is useful to extend the classical CA model and introduce feasible mechanisms in order to take advantage of the parallelism source of this computational model. With this aim the Cellular Automata Network (CAN) model was conceived that includes the advantages of classical CA models and introduces a new source of parallelism, i.e. the network of cellular automata. In this paper we deal with a sort of heuristics in order to map CA applications into CANs. This mapping can also be extremely useful as a proposal of a methodology to drive the modeling and simulation activity of complex phenomena that can be easily fragmented according to local interaction and components. (C) 2002 Elsevier Science B.V. All rights reserved.

关键词： cellular automata programming model complex system simulation data and task parallelism

来源：评论

学校读者我要写书评

暂无评论

Mapping applications of cellular automata into applications of cellular automata networks

Mapping applications of cellular automata into applications ...

引用

Europhysics Conference on Computational Physics (CCP 2001)

作者： Calidonna, CR Di Gregorio, S Furnari, MM CNR Ist Cibernet Eduardo Caianiello I-80078 Pozzuoli NA Italy Univ Calabria Dipartimento Matemat I-87036 Arcavacata Di Rende CS Italy

关键词： cellular automata programming model complex system simulation data and task parallelism

来源：评论

学校读者我要写书评

暂无评论

Irrigation water demand for the decision maker

引用

ENVIRONMENT AND DEVELOPMENT ECONOMICS 2002年第4期7卷 643-657页

作者： Bontemps, C Couture, S INRA ESR F-31326 Casianet Tolosan France INRA Lab Econ Forestiere Nancy France

This paper deals with the problems of estimating irrigation water demand. We propose an original method of estimation in two steps. First, we develop a dynamic programming model in order to explain the optimal irrigation management plan. Based on a microeconomic approach describing the farmer's behavior, this economic model, introducing an agronomic model, and an algorithm of solution search, is used to compute a realistic database. Second, these data are used to estimate profit functions by a non-parametric method. The irrigation water demand function is estimated using a non-parametric derivation procedure. An application to irrigation water demand is proposed in the southwestern area of France where conflicts appear frequently. The same results appear for different climates: for small quantities of water available, irrigation water demand seems to be quite inelastic. If one increases the total quantity, of water available, the shape of the curve changes and the demand appears more elastic. The threshold price at which the changes in price-responsiveness appears, depends on weather conditions and range from 0.30 F/m(3) in a wet year to 1.60 F/m(3) in a dry year. These results are crucial information for the regulator in order to analyze the effects of a water regulation policy, based on prices. The impact of an increase in the water price will depend not only on the climate but also on the location of the initial and final prices on the demand function.

关键词： irrigation water demand water pricing programming model nonparametric method

来源：评论

学校读者我要写书评

暂无评论

The JavaSeal mobile agent kernel

引用

AUTONOMOUS AGENTS AND MULTI-AGENT SYSTEMS 2001年第4期4卷 359-384页

作者： Bryce, C Vitek, J Univ Geneva Object Syst Grp CH-1211 Geneva 4 Switzerland Purdue Univ Dept Comp Sci W Lafayette IN 47907 USA

Mobile agents show promise as a new distributed programming paradigm in which locality plays a central role-programs that are able to move closer to their data can overcome limitations of connectivity, latency or bandwidth. Mobility also enables distributed systems to evolve;for instance, the deployment of a new service over a network can be programmed as part of the service itself. Of course, moving programs introduces new challenges. One of these is related to program structure: How much of a computation should be moved? Where are the boundaries between mobile and immobile entities drawn? A second challenge is to provide security guarantees: How can the actions of mobile agent be controlled? And what kinds of security properties can we realistically expect to enforce? We answer these questions within the framework of the JavaSeal mobile agent system kernel. JavaSeal provides several abstractions for constructing agent systems in Java. Our basic building block is the seal which is a nested encapsulated computation fragment with sharply delineated boundaries. Strands are sequential threads of computation bound to a seal. Capsules transfer passive seals and objects over communication channels;Traffic over channels is regulated by portals. We argue that these abstractions are sufficient to program secure mobile agent systems. An electronic commerce application built over our kernel is used as a demonstrator.

关键词： agent platform kernel security programming model

来源：评论

学校读者我要写书评

暂无评论

The WebSphere Application Server architecture and programming model

引用

IBM SYSTEMS JOURNAL 1998年第3期37卷 336-348页

作者： Bayeh, E IBM Corp Software Solut Div Res Triangle Pk NC 27709 USA

This paper discusses the infrastructure that IBM is providing to support the World Wide Web and to facilitate Web applications and commerce. This effort started as an architecture called the Network Computing Framework (NCF), and is now the foundation of the IBM WebSphere Application Server(TM). The WebSphere Application Server is a product ISM first delivered in June 1998. In this paper we discuss this architecture and programming model. We start with a brief introduction and history of the NCF, then examine the architecture of the WebSphere Application Server. We take a close look at the core run time of the WebSphere Application Server, then delve into the Java(TM) programming model that supports this architecture. We also present the reasons why Java is a prominent part of this architecture, and see what relevant technologies Java provides for this run time.

关键词： .servlets programming model Web servers

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：