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Current Internet has become an essential communication infrastructure, not only for information transfer but also as a key component of social infrastructures, such as e-government, energy/traffic controls, finance, learning, health, etc. Even though the Internet has evolved towards high-bandwidth network architectures offering transparent transport services for fixed and mobile applications, its...
A key challenge in developing RESTful Web systems is the lack of software development frameworks that support REST principles. This article gives practical guidelines for designing frameworks for developing such systems. Derived from intuitive formal models, these guidelines enable a development process that improves separation of concerns and the modifiability of developed systems. The authors analyze...
The World Wide Web has become an important platform for delivering services in the last decade. Openness and flexibility are indeed key factors for the success of the Web where end-users develop applications freely. As a consequence, end-users become producers and consumers of contents and services. End-users rely for their communication needs on communication platforms (CPs). CPs managed by Service...
Due to the system obturation, surveillance service based on dedicated network can not be accessed by different network technologies and has no mobility. The surveillance application based on Internet can not provide security and QoS guarantee. This paper proposes a new architecture which is based on IP Multimedia Subsystem (IMS), and analyzes the advantages of the introduction of IMS. Furthermore,...
Multimedia conferencing is becoming a hot topic of communication in recent years. There are already a few products of multimedia conferencing based on H.323. SIP, which is a more feasible protocol, is put on the agenda of being the call signaling protocol for conferencing. Most of the researches on SIP-based multimedia conferencing, however, have still remained on theories or experiments. In this...
The development of an open architecture for multimedia data integration and visualization in template based distributed applications is a challenge for the scientific researches. Because of characteristics of multimedia data, their management and querying techniques are unlike than those of traditional data. We can increase the potential use of multimedia data across various applications by storing...
Thanks to the attractions of the multimedia, namely interactivity and multimodality, it seems that web sites and CD-ROMs have the capacity to transmit heritage information to the public. But ultimately they miss real cognitive or educational purposes. Consequently, this article suggests enriching the conception of educational products, combining the potential of video games with the methods of representation...
Many real-time communication protocols have been studied to guarantee the communication requirements of distributed real-time systems. But, current techniques lack all or most of these requirements specially bounded message delivery time. In this paper we have proposed a Mac layer protocol called RDM+ with concepts similar to Round Data Mailer multi layer protocol. Our simulation results show that...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
Internet Relay Chat (IRC) is a critical application in military networks for maintaining situational awareness and conducting battle management at all echelons. But these networks are often subject to frequent disconnections, limited bandwidth, and long delays, especially when using satellite services and field radios. Such conditions are inhospitable to TCP, and thus the standard IRC protocol, which...
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