Concept

Topologie initiale

Publications associées (62)

MODELING AND NUMERICAL SIMULATION OF A COMPLETE HYDROELECTRIC PRODUCTION SITE

François Avellan, Jean-Jacques Simond, Christophe Nicolet, Philippe Allenbach

For many years the EPFL Laboratory for Electrical Machines develops SIMSEN, a numerical software package for the simulation in transient and steady-state conditions of electrical power systems and adjustable speed drives, having an arbitrary topology. SIMS ...

2007

Survivable Routing of Mesh Topologies in IP-over-WDM Networks by Recursive Graph Contraction

Patrick Thiran, Maciej Kurant

Failure restoration at the IP layer in IP-over-WDM networks requires to map the IP topology on the WDM topology in such a way that a failure at the WDM layer leaves the IP topology connected. Such a mapping is called survivable. Finding a survivable mappin ...

2007

Generic emergent overlays in arbitrary peer identifier spaces

Karl Aberer, Wojciech Galuba

Unstructured overlay networks are driven by simple protocols that are easy to analyze and implement. The lack of structure, however, leads to weak message delivery guarantees and poor scaling. Structured overlays impose a global overlay topology that is th ...

2007

On Routing in Distributed Hash Tables

Jean-Yves Le Boudec, Karl Aberer, Fabius Klemm, Sarunas Girdzijauskas

There have been many proposals for constructing routing tables for Distributed Hash Tables (DHT). They can be classified into two groups: A) those that assume that the peers are uniformly randomly distributed in the identifier space, and B) those that allo ...

2007

A Novel Five-leg Inverter PWM Technique for Two-Motor Centre-Driven Winders

Drazen Dujic

Two three-phase motors can be controlled independently using a five-leg inverter as the supply, with one leg being common to both machines. Major shortcoming of this topology for general applications is the need to double the DC bus voltage in order to ach ...

IEEE2007

Simulation tool linking hydroelectric production sites and electrical networks

François Avellan, Jean-Jacques Simond, Christophe Nicolet, Philippe Allenbach

Since many years the EPFL Laboratory of Electrical Machines develops SIMSEN, a numerical software package for the simulation of electrical power systems and adjustable speed drives, in transient and steady-state conditions, having an arbitrary topology. SI ...

2006

Self-renewal and cancer of the gut: two sides of a coin

Freddy Radtke

The intestinal epithelium follows the paradigms of stem cell biology established for other self-renewing tissues. With a unique topology, it constitutes a two-dimensional structure folded into valleys and hills: the proliferative crypts and the differentia ...

2005

On Survivable Routing of Mesh Topologies in IP-over-WDM Networks

Patrick Thiran, Maciej Kurant

2005

Survivable MApping Algorithm by Ring Trimming (SMART) for large IP-over-WDM networks

Patrick Thiran, Maciej Kurant

We develop a fast and efficient algorithm that finds a survivable (i.e., robust to single fiber failures) mapping of IP topology on the mesh of fibers in IP-over-WDM networks; we call it SMART. A number of algorithms solving this problem can be found in th ...

2004

Impact of Topology Changes in Video Segmentation Evaluation

Touradj Ebrahimi, Elisa Drelie Gelasca

This work addresses the problem of studying and characterizing topology changes between resulting and reference segmentation masks in video sequences. In particular, the goal of this paper is to examine the impact of individual and combined artifacts found ...

IEEE2004

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