Concept

Shortwave radio

Publications associées (44)

Synergie de modélisations physique et numérique pour le développement d’atténuateurs de vagues d’un convoi fluvial / Synergy between physical and numerical modeling used for the development of ship waves attenuator

Le batillage résulte du déferlement des vagues générées par le passage d’une embarcation. Les effets qui en résultent sur le milieu aquatique sont l’érosion des berges et la destruction des habitats. Sur le canton de Genève, une grande partie des déchets m ...

Société Hydrotechnique de France2010

Modeling methodology of high-voltage substrate minority and majority carrier injections

Maher Kayal, Jean-Michel Sallese, Fabrizio Lo Conte

This paper presents a modeling methodology for substrate current coupling mechanisms. An enhanced model of the diode ensuring continuity of minority carriers is used to build an equivalent schematic, accounting for minority and majority carrier propagation ...

2010

Electronic Raman scattering in magnetite: Spin versus charge gap

Helmuth Berger

We report Raman-scattering data of single crystals of magnetite (Fe3O4) with Verwey transition temperatures (T-v) of 123 and 117 K, respectively. Both single crystals reveal broad electronic background extending up to 900 wave numbers (similar to 110 meV). ...

2009

Evolution and Market Share of Wireless Community Networks

Jean-Pierre Hubaux, Peter Marbach

Wireless community networks that operate in the unlicensed spectrum have emerged as a low-cost alternative for providing high-speed wireless data services. By using WiFi access points that are provided and managed by community members, wireless community n ...

2009

Epitaxial Lead Chalcogenides on Si for Mid-IR Detectors and Emitters Including Cavities

Niels Quack

Lead chalcogenide (IV-VI narrow-gap semiconductor) layers on Si or BaF2(111) substrates are employed to realize two mid-infrared optoelectronic devices for the first time. A tunable resonant cavity enhanced detector is realized by employing a movable mirro ...

2008

Virtual Infrastructure for Collision-Prone Wireless Networks

Seth Gilbert

Wireless ad hoc networks pose several significant challenges: devices are unreliable; deployments are unpredictable; and communication is erratic. One proposed solution is Virtual Infrastructure, an abstraction in which unpredictable and unreliable devices ...

2008

An 11-Mb/s 2.1-mW Synchronous Superregenerative Receiver at 2.4 GHz

Catherine Dehollain, Michel Declercq

This paper presents a low-voltage low-power high-speed superregenerative receiver operating in the 2.4-GHz industrial-scientific-medical band. The receiver uses an architecture in which, thanks to the presence of a phase-locked loop, the quench oscillator ...

2007

High Frequency Bands and Estimated Local Field Potentials to Improve Single-Trial Classification of Electroencephalographic Signals

José del Rocio Millán Ruiz, Anna Buttfield, Pierre Ferrez

Non-invasive brain-computer interfaces are traditionally based on mu rhythms, beta rhythms, slow cortical potentials or P300 event-related potentials. However, there is mounting evidence that neural oscillations up to 200 Hz play important roles in process ...

2006

Energy-efficient Broadcasting in All-wireless Networks

Jean-Pierre Hubaux, Christian Enz, Mario Cagalj

In all-wireless networks, minimizing energy consumption is crucial as in most cases the nodes are battery-operated. We focus on the problem of power-optimal broadcast, for which it is well known that the broadcast nature of radio transmissions can be explo ...

2005

Free-Surface Flows Solver with Nonhydrostatic pressure and Modified k-ε turbulence model : Simulation of the Curved Open Channel

Célestin Leupi, Edie Miglio

The commonly numerical models with the conventional hydrostatic pressure and the standard isotropic k-epsilon turbulence model closure still remain the most widely used approach for the solution of practical engineering problems. However in the presence of ...

2004

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