Functional standardization activities in ISO and in regional workshops are currently addressing network layer relays for the interconnection of several types of subnetworks. This paper addresses the problem of congestion control in relay systems for LAN/WAN interworking. Particularly, the congestion behavior of the X.25 protocol relay is analyzed from simulations. The load/throughput and load/t...

Large scale High Performance Computing and Communication (HPCC) applications (e.g. Video-on-Demand, and HPDC) would require storage and processing capabilities which are beyond existing single computer systems. The current advances in networking technology (e.g. ATM) have made high performance network computing an attractive computing environment for such applications. However, using only high ...

The MALLBA project tackles the resolution of combinatorial optimization problems using generic algorithmic skeletons implemented in C++. A skeleton in the MALLBA library implements an optimization method in one of the three families of generic optimization techniques offered: exact, heuristic and hybrid. Moreover, for each of those methods, MALLBA provides three different implementations: seque...

This paper describes how video streaming from or to mobile participants of a video conference can be supported by a so called “Mobility Gateway“. The gateway interconnects a mobile client, through a wireless link, to a fixed network LAN or WAN multicast environment and performs intelligent operations on the video stream like transcoding, congestion control etc. in order to provide the mobile us...

This note addresses the question of whether self-similar processes are suucient to model packet network traac, or whether a broader class of multifractal processes is needed. By using the absolute moments of aggregate traac measurements , we conclude that measured local-area network (LAN) and wide-area network (WAN) traac traces, with the sample means subtracted, are well modelled by random pro...

This paper describes the results of IP traffic traces taken within a departmental LAN over a 16 day period. This traffic is used to drive a model of IP-overATM to analyse the real efficiency of the technique. We propose a new method of analysing the resultant ATM traffic, and conclude that cell utilisation is higher than would be predicted with WAN traffic. We also show that RFC1144 header comp...

Zi-Xiang CHEN, Lan-Qing YAO, Li-Hui GU, Lei LIANG, Ping WANG, Matteo CESCON, Dong-Sheng HUANG, Timothy M. PAWLIK, Wan Yee LAU, Feng SHEN, Fu-Bao LIU, Tian YANG*. Ann Hepatobiliary Pancreat Surg 2022;26:S312. https://doi.org/10.14701/ahbps.2022S1.EP-30

NCs are the natural evolution of PCs, ubiquitous computers everywhere. The current vision of NCs requires two improbable developments: (1) inexpensive high-bandwidth WAN links to the Internet, and (2) inexpensive centralized servers. The large NC bandwidth requirements will force each home or office to have a local server LAN attached to the NCs. These servers will be much less expensive to pur...