Multicasting on the Internet and its Applications

Sample

Srihari Nelakuditi, Zhi-Li Zhang

Under Quality of Service (QoS) routing, paths for flows are selected based upon the knowledge of resource availability at network nodes and the QoS requirements of flows. QoS routing schemes proposed differ in the way they gather information about the network state and select paths based on this information. We broadly categorize these schemes into best-path routing and proportional routing. The best-path routing schemes gather global network state information and always select the best path for an incoming flow based on this global view. On the other hand, proportional routing schemes proportion incoming flows among a set of candidate paths. We have shown that it is possible to compute near-optimal proportions using only locally collected information. Furthermore, a few good candidate paths can be selected using infrequently exchanged global information and thus with minimal communication overhead. Localized Quality Of Service Routing For The Internet, describes these schemes in detail demonstrating that proportional routing schemes can achieve higher throughput with lower overhead than best-path routing schemes. It first addresses the issue of finding near-optimal proportions for a given set of candidate paths based on locally collected flow statistics. This book will also look into the selection of a few good candidate paths based on infrequently exchanged global information. The final phase of this book will describe extensions to proportional routing approach to provide hierarchical routing across multiple areas in a large network. Localized Quality Of Service Routing For The Internet is designed for researchers and practitioners in industry, and is suitable for graduate level students in computer science as a secondary text.

Sample

Lyman Chapin

Communication Systems: The State of the Art captures the depth and breadth of the field of communication systems: -Architectures and Protocols for Distributed Systems; -Network and Internetwork Architectures; -Performance of Communication Systems; -Internet Applications Engineering; -Management of Networks and Distributed Systems; -Smart Networks; -Wireless Communications; -Communication Systems for Developing Countries; -Photonic Networking; -Communication Systems in Electronic Commerce. This volume's scope and authority present a rare opportunity for people in many different fields to gain a practical understanding of where the leading edge in communication systems lies today-and where it will be tomorrow.

Sample

Olaf Zimmermann, Mark Tomlinson, Stefan Peuser

"The ongoing Web services trend is ubiquitously featured already - many publications on Web services exist. The first wave of enterprise-scale applications and projects exploiting the benefits of the technology is on its way. However, there is still a lack of experience in the field - technical decision makers are struggling about when to apply which elements of the technology, and how to do so. This is a variation of the well-known "chicken and egg" problem: no project without an architectural decision, no architectural decision without experience, no experience without a project. This book provides technical guidance and helps the reader to cut the Gordian knot." Key Topics - Seven - sometimes controversial - Perspectives on Web services, covering the entire project lifecycle from opportunity identification to design, development, and deployment - Introduction to Web services architectures as defined by the World Wide Web Consortium (W3C), and their Java 2 Enterprise Edition (J2EE) instantiations - Understanding the Web services building blocks SOAP, WSDL, and UDDI - Business scenarios and functional/non-functional requirements for Web services solutions - Patterns for Web services projects and related architectural decisions - Sample implementation platform: IBM WebSphere Studio integrated development environment and IBM WebSphere Application Server Version 5 - Full-scope implementation of an end-to-end case study, including hands-on instructions for development and deployment - Apache SOAP 2.3 as well as JAX-RPC programming through JSR 109 and Apache Axis - Interoperability between Microsoft .NET C# and Apache SOAP - Runtime topologies for Web services solutions, deployment to WebSphere, transport layer and Web services security - Best practices for design and management of Web services projects - Trends such as Grid computing and the semantic Web Features: - Project-centric approach including lessons learnt and pitfalls to avoid - Many sample project deliverables, including checklists to decide whether Web services are an appropriate solution to a given business problem - Guide to W3C recommendations and other Web services specifications - Full source code for a complete reference implementation - Many rich illustrations, website support, and extensive pointers to other Web resources This book will provide everything that a project team needs to know about design, development and deployment of Web services with the IBM WebSphere product family. Taking a realistic and pragmatic view on the subject, this book will be an essential part of every Java Web service developer's bookshelf. Meet fictitious members of the target audience as they find their way through a first-of-a-kind Web services project, and hear their opinions on the topic at hand. Benefit from the real-world experience the authors gained during numerous client projects and workshops.

Sample

Frank Puppe (ed

A special year like 1999 invites one to draw a balance of what has been achieved in the roughly 30 years of research and development in knowledge based systems (still abbreviated as XPS following the older term “expert systems”) and to take a look at th what the future may hold. For the 5 German conference on knowledge-based systems we therefore asked current and former speakers of the four working groups (FG’s) in the subdivision of knowledge-based systems (FA 1.5) of the German association of Informatics (GI) to present a survey of and future prospects for their respective fields: knowledge engineering, diagnosis, configuration, and case-based reasoning. An additional 14 technical papers deal with current topics in knowledge-based systems with an equal emphasis on methods and applications. They are selected from more than 50 papers accepted in the 4 parallel workshops of XPS-99: a) Knowledge Management, Organizational Memory and Reuse, b) various fields of applications, c) the traditional PuK Workshop (planning and configuration), and d) the GWCBR (German workshop on case-based reasoning). The other papers presented at these workshops are not included in this volume but are available as internal reports of Würzburg university together with the exhibition guide that emphasizing tool support for building knowledge based systems.