Search

Your search keyword '"Peraki, Christina"' showing total 5 results
Start Over Author "Peraki, Christina"
5 results on '"Peraki, Christina"'

1. On Multiflows in Random Unit-Disk Graphs, and the Capacity of Some Wireless Networks

Author

Peraki, Christina and Servetto, Sergio D.

Subjects
Computer Science - Information Theory
Abstract

We consider the capacity problem for wireless networks. Networks are modeled as random unit-disk graphs, and the capacity problem is formulated as one of finding the maximum value of a multicommodity flow. In this paper, we develop a proof technique based on which we are able to obtain a tight characterization of the solution to the linear program associated with the multiflow problem, to within constants independent of network size. We also use this proof method to analyze network capacity for a variety of transmitter/receiver architectures, for which we obtain some conclusive results. These results contain as a special case (and strengthen) those of Gupta and Kumar for random networks, for which a new derivation is provided using only elementary counting and discrete probability tools., Comment: Submitted to the IEEE Transactions on Information Theory, March 2005

Published
2005

2. EOSC integration plan

Author

Kovács, József, Farkas, Attila, Sipos,Gergely, Lovas, Róbert, Pisa, Claudio, Papastefanatos, George, Peraki, Christina, and Chondros, Nikos

Subjects
EOSC, plan, service, integration
Abstract

NEANIAS develops thematic services for EOSC communities on the field of Underwater, Atmospheric and Space research. The project will integrate the thematic services into the EOSC ecosystem after they reach the maturity required by EOSC. This deliverable collects and introduces the integration approaches, procedures, relevant services discovered as part of the EOSC landscape. Based on this information the document then proposes an integration strategy and roadmap.

Published
2020
Full Text
View/download PDF

3. Core Services Architecture, Design Principles and Specifications

Author

Sciacca, Eva, Kakaletris, Georgios, Papanikos, Georgios, Chondros, Nikos, Konstantopoulos, Michalis, Pisa, Claudio, Topa, Eugenio, Messineo, Rosario, Mulone, Angelo Fabio, Krokos, Mel, Vizzari,Giuseppe, Kertesz, Gabor, Kovacs, Jozsef, Farkas, Attila, Lovas, Robert, Papastefanatos, George, and Peraki, Christina

Subjects
EOSC, Architecture, Services, Service Oriented Architecture, FOS: Civil engineering
Abstract

The objective of deliverable D6.1 is to report on architecture, specifications and software development plan of the Core Services that will be developed in WP6. This document reports on the general design principles, the overall system architecture and fundamental resources. Then it presents the foreseen core services related to manage Open Science lifecycle (C1), EOSC integration (C2), Artificial Intelligence processing (C3) and, finally, Visualization (C4).

Published
2020
Full Text
View/download PDF

5. Throughput Stability and Flows in Large-Scale Random Networks

Author

Peraki, Christina

Subjects
throughput, flows, stability, multicommodity, networks, wireless, directional, antennas, capacity
Abstract

The rate of growth of the maximum stable throughput in large-scale random networks as a function of network size is studied in this thesis. The problem is formulated as one of determining the value of the maximum multicommodity flow on the corresponding random unit-disk graph and shown to be equivalent. In this way, using simple flow techniques and probability tools, a tight bound is derived on the rate of growth of the maximum stable throughput with a fairness constraint. As an application of these techniques, similar bounds are computed for different cases of highly dense wireless networks when directional antennas are being used and the results are compared to the omnidirectional case.

Published
2005

Catalog

Books, media, physical & digital resources
See catalog results