Robustness in Network Protocols and Distributed Applications of the Internet

2008 ◽  
pp. 61-86 ◽  
Author(s):  
Jürgen Vogel ◽  
Jörg Widmer
Keyword(s):  
Network Protocols ◽  
Distributed Applications ◽  
The Internet

An Introductory Tutorial for Developing Multiuser Virtual Environments

1994 ◽  
Vol 3 (4) ◽  
pp. 255-264 ◽  
Author(s):  
Rich Gossweiler ◽  
Robert J. Laferriere ◽  
Michael L. Keller ◽  
Randy Pausch
Keyword(s):  
Virtual Environments ◽  
Virtual Environment ◽  
Source Code ◽  
Dead Reckoning ◽  
Distributed Applications ◽  
The Internet ◽  
Improve Performance ◽  
Distributed Application ◽  
Broadcast Communication ◽  
Position Data

This paper is an introductory level tutorial describing how to implement a distributed multiparticipant virtual environment (VE). This tutorial is intended for students who are competent programmers and who now wish to implement a distributed multiparticipant application. We describe the fundamental concepts of distributed computing for multiplayer simulations and provide a concrete example, including C source code available via the Internet. The template program demonstrates a simple multiplayer, distributed application, where each player controls the position of a space ship, and communicates the ship's position data over the network. The template uses broadcast communication and a technique called dead-reckoning to improve performance. We give detailed instructions on how to obtain and modify the template, so that students can quickly create their own distributed applications. We conclude by briefly discussing advanced issues that are important when constructing more sophisticated multiparticipant VEs.

Designing networks for challenging applications

2014 ◽  
Vol 56 (6) ◽  
Author(s):  
Björn Scheuermann
Keyword(s):  
Research Group ◽  
Network Protocols ◽  
The Internet ◽  
Core Network ◽  
Scarce Resources ◽  
Design Philosophy ◽  
Application Requirements

AbstractMost networks in use today, most prominently the Internet, follow a design philosophy which aims to support a broad range of applications. This comes to a limit when the combination of application and environment poses increasing challenges with respect to scarce resources (like bandwidth, latency or energy). It also fails if the challenges stem from application requirements that are violated by core network protocols, like, for instance, anonymity requirements in a network using unique addresses. This observation motivates an overarching perspective on the design of network protocols in such cases, which takes the interplay between network and application explicitly into consideration – a challenge which is tackled for several application areas in my research group.

Effectiveness of Web Services

2010 ◽  
pp. 1754-1762
Author(s):  
Kamel Karoui ◽  
Fakher Ben Ftima
Keyword(s):  
Web Services ◽  
Mobile Agents ◽  
Business Models ◽  
Critical Factor ◽  
Cost Effective ◽  
Distributed Applications ◽  
The Internet ◽  
Heterogeneous Environments ◽  
Application Performance ◽  
Distributed Information

With the development of the Internet, the number of people buying, selling, and performing transactions is expected to increase at a phenomenal rate. The emergence of e-commerce applications has resulted in new net-centric business models. This has created a need for new ways of structuring applications to provide cost-effective and scalable models. Mobile Agents (MA) systems are seen as a promising paradigm for the design and implementation of distributed applications, including e-commerce. MA are also useful in applications requiring distributed information retrieval because they move the location of execution closer to the data to be processed. While MA have generated considerable excitement among the research community, they have not been applied into a significant number of real applications. Web services (WS) are emerging as a dominant paradigm for constructing distributed business applications and enabling enterprise-wide interoperability. A critical factor to the overall utility of WS is a scalable, flexible and robust discovery mechanism; an application can be built by integrating multiple services together to make a more efficient service. WS represent a major development in the e-commerce sector. They enable companies to capitalize on their existing architecture by making their application services accessible via the Internet. The application of MA and WS technologies to e-commerce will provide a new way to conduct business-to-business (B2B), business-to-consumer (B2C), and consumer-to-consumer transactions (C2C) and facilitate the communication between heterogeneous environments. In this article, we first focus on these two technologies of actuality and show their integration in an e-commerce system. Second, we present different kinds of interaction between MA and WS and study their effect on application performance. We also study an example that illustrates an e-commerce system including three categories of transactions: -Shopping transactions: a customer delegates one MA for research and purchase of articles online. The MA will interact with available WS to find the article and its best price. -Salesman transactions: to valorize their products, WS will invoke MA to make publicity for the customers. -Auction transactions: for this type of transaction, a MA (respectively a WS) can sell and buy a product from/to others MA (WS) by auction. Finally, we conclude with a discussion on our inferences and their implications. This work is structured as follows: Section “background” reviews the notions of e-commerce system, WS and MA paradigms. Section “Web services and mobile agents’ technologies on e-commerce system” presents the integration of these two paradigms on the e-commerce system. In section “performance evaluation,” we evaluate the performances of our approach and we study an illustrated example in the section “a case study.” The section “future trends” presents our future perspectives and we end this work with the “conclusion” in the last section.

A collaboration model for better reliability and performance for object-based distributed applications over the Internet

2003 ◽  
Vol 16 (2/3) ◽  
pp. 78 ◽  
Author(s):  
Allan K.Y. Wong ◽  
Tharam S. Dillon ◽  
May T.W. Ip ◽  
Wilfred W.K. Lin ◽  
Brian H.T. Wong
Keyword(s):  
Distributed Applications ◽  
The Internet ◽  
Collaboration Model ◽  
Object Based ◽  
And Performance

STRUCTURE, NETWORK PROTOCOLS OF THE INTERNET OF THINGS FOR QUALITY PRODUCTION CONTROL

2020 ◽  
Vol 21 (4) ◽  
pp. 478-482
Author(s):  
U. A. Vishnyakou ◽  
◽  
B. H. Shaya ◽  
A. H. Al-Masri ◽  
S. H. Al-Hajj ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Production Control ◽  
Network Protocols ◽  
The Internet ◽  
The Internet Of Things ◽  
Quality Production

CyberAgent: Collaborative Agents for Distributed Applications Over the Internet

2001 ◽  
Author(s):  
J. Shi ◽  
G. Q. Huang ◽  
K. L. Mak
Keyword(s):  
Distributed Applications ◽  
The Internet ◽  
Relationship Model

Abstract This paper is mainly concerned with developing the broking agents called CyberAgent for collaborations among distributed applications over the Internet. Based on a flexible relationship model — CyberWorkflow — among CyberAgents, parameters can be transferred among applications with dataflows between CyberAgents, and applications are to be activated sequently according to controlflows among CyberAgents. Details of CyberAgent and CyberWorkflow are discussed in this paper. A case study is introduced in this paper to demonstrate how eight CyberAgents can be used in a Lucas DFA application suit to facilitate collaborations among eight sub-applications, each one occupying an individual CyberAgent. Concluding discussion is provided at the end of this paper.

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