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Performance Evaluation of a Consensus Algorithm with Petri Nets N. Sergent This paper presents an application of Hierarchical Coloured Timed Petri Nets to the modeling, the evaluation and the improvement of the performance of a distributed consensus algori ...
The authors formalize the description of the buffer-constrained adaptive quantization problem. For a given set of admissible quantizers used to code a discrete nonstationary signal sequence in a buffer-constrained environment, they formulate the optimal so ...
We consider a scenario where multimedia data is sent over a network offering a guaranteed service such as ATM VBR or the guaranteed service of the IETF. A smoothing device writes the stream into a networking device for transmission, possibly with some pre- ...
This paper extends the failures detector approach from crash-stop failures to muteness failures. Muteness failures are malicious failures in which a process stops sending algorithm messages, but might continue to send other messages, e.g. 'I-am-alive' mess ...
Evaluating Latency of Distributed Algorithms Using Petri Nets N. Sergent The time it takes to a distributed algorithm to finish (the distributed algorithm latency) cannot be directly measured in asynchronous systems if the algorithm starts and ends on diff ...
We address interactive voice services over Best Effort packet networks where traffic is subject to unpredictable congestions. The quality of voice services can be significantly affected by network delay and jitter due to the rejection of late packets. LIFO ...
We provide an algorithm for computing best paths on a graph where edges have a multidimensional cost, one dimension representing delay, the others representing available capacity. Best paths are those which guarantee maximum capacity with least possible de ...
Single mode guided optics have recently taken a predominant place in communications systems. For instance single mode fibres enable long span, high data rate transmission links to be installed. In such fibers the data rate is ultimately limited by the chro ...
Hydroxyl radicals dominate daytime tropospheric chem., responsible for reactive removal of most trace gases (e.g., volatile org. compds.[VOC]), and is an active participant in the NO and NO2 cycle. Pump-and-probe LIDAR was used to examine the OH- chem. in ...
We propose a new optical physical layer and protocol for optical Load Area Networks (LANs), which allow a large number of hosts to be connected while offering a large capacity and exhibiting a high degree of modularity and scalability. The physical layer o ...
