Video transfers across IP and ATM networks have received much research attention during the last ten years. Various video services are expected in the future, enabled by the rapid development in video coding and broadband network technology. This paper gives an introduction to the issues involved in asynchronous video transfers. Brief overviews of video coding, rate control, multiplexing, as we...

Asynchronous Transfer Mode (ATM) technology performance is evaluated for Class C (variable bit rate, asynchronous) data transfer, as would be typically found when migrating legacy applications to an ATM environment. Of particular interest are the end-to-end latencies obtainable using ATM networks to transfer time critical data. Latencies obtained using Classical IP over ATM and raw ATM using th...

FDDI network is a network that can provide real-time message delivery, It supports two classes of messages: synchronous class and asynchronous class. Guaranteeing deadlines of real-time messages with FDDI synchronous mode has been studied extensively. However, most existing FDDI products support asynchronous message transmission only. In this paper, we develop an analytic method for guaranteein...

Focusing on the tadditional test automation technique’s lack in the AJAX Web application and based on the AJAX key techniques and asynchronous work mode ,a special asynchronous test automation method for the AJAX Web application is analyzed and designed. The design of the structure frame of the center of the AJAX test automation technique and a pair of program defined functions access and wait ...

The objective of the INSTANCE (Intermediate Storage Node Concept) project is to support asynchronous communication in server-based systems, like World-Wide Web and Video-on-Demand, more efficiently by a new structure for server-based systems. The proposed approach will lead to a structure that is capable to support concurrently a higher number of clients with lower costs (compared to traditiona...

A new mode of carbene-catalyzed heteroatom activation and asymmetric reactions is disclosed. The reaction starts with addition a carbene catalyst to (benz)imidazole-derived aldimine substrate. Subsequent oxidation proton transfer lead the formation catalyst-bound triaza-diene as key intermediate, in which nitrogen atom at site remote catalyst-substrate bond activated. This unusual intermediate ...

To improve network bandwidth utilization, the asynchronous transfer mode (ATM) forum has standardized available bit rate (ABR) service which requires a number of parameters to be negotiated during connection setup. MCR is the minimum cell rate guaranteed by the network and can be used to provide an acceptable quality of service for applications. In this study, explicit forward congestion indica...

Interaction plays an important role to the success of distance learning. As most distance learning environments utilize mainly asynchronous ComputerMediated Communication (CMC) systems, interaction research that focuses on synchronous CMC is largely ignored. This study scrutinize the patterns of learnerlearner interaction in a distance-learning environment. Student interactions in synchronous a...

In February 1999, the ATM Forum international consortium approved the first version of its security specifications aiming to protect communications over Asynchronous Transfer Mode (ATM) networks by offering data confidentiality, partners authentication, etc. In order to improve those specifications, a new approach to negotiate some security services has been presented at the ATM Forum and will ...