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Décroissance

Publications associées (31)

How CSMA/CA With Deferral Affects Performance and Dynamics in Power-Line Communications

Patrick Thiran, Julien Pierre Sacha Herzen, Christina Vlachou

Power-line communications (PLC) are becoming a key component in home networking, because they provide easy and high-throughput connectivity. The dominant MAC protocol for high data-rate PLC, the IEEE 1901, employs a CSMA/CA mechanism similar to the backoff ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Policy packaging in support of absolute decoupling – a conceptual model

Global resource consumption has seen marked increases in the last century, in particular since the 1950s. In transforming these materials into products, food, infrastructure and energy functions for mobility and housing, significant environmental impacts a ...

A World Resources Forum Production, PSI2017

Zinc blende-wurtzite polytypism in nanocrystalline ZnO films

Christophe Ballif, Cécile Hébert, Aïcha Hessler-Wyser, Duncan Thomas Lindsay Alexander, Sylvain Nicolay, Lorenzo Fanni, Arthur Brian Aebersold

ZnO is commonly observed and assumed to crystallize fully in a wurtzite structure. Indeed, While polytypism between a wurtzite and a zinc blende phase is often seen in some II-VI compounds, it has only rarely been observed in ZnO. Here, by means of automat ...

Elsevier2017

The climate impacts of feebate on cars in future scenarios

Rafael Laurenti

The ongoing EU FP7 project DYNAMIX aims to develop and assess dynamic policy mixes that achieve absolute decoupling between resource use and well-being. One of the policy instruments we assess is a feebate scheme for selected product categories. This instr ...

A World Resources Forum Production, PSI2017

Frugal Topology Construction for Stream Aggregation in the Cloud

Rachid Guerraoui, Rhicheek Patra, Bao Duy Tran

Aggregation of streamed data is key to the expansion of the Internet of Things. This paper addresses the problem of designing a topology for reliably aggregating data flows from many devices arriving at a datacenter. Reliability here means ensuring operati ...

Ieee2016

Simultaneous initiation and growth of multiple radial hydraulic fractures from a horizontal wellbore

Brice Tanguy Alphonse Lecampion

Multi-stage fracturing is the current preferred method of completion of horizontal wells in unconventional hydrocarbon reservoirs. Its core component consists in simultaneously initiating and propagating an array of hydraulic fractures. We develop a numeri ...

Pergamon-Elsevier Science Ltd2015

Porous thick-film silver metallisation for thermally mismatched brazing operations in tokamak magnetic sensor

Duccio Testa, Peter Ryser, Lucas Güniat, Thomas Maeder, Caroline Jacq, Adrien Aymeric Thibault Corne

A novel sensor based on thick-film + LTCC (low-temperature cofired ceramic) technology has been recently developed for sensing high-frequency 3D magnetic fields in tokamak fusion devices. For integration within the walls of the tokamak, the sensor has to b ...

IMAPS / ACerS2015

On the MAC for Power-Line Communications: Modeling Assumptions and Performance Tradeoffs

Patrick Thiran, Julien Pierre Sacha Herzen, Christina Vlachou

Power-line communications are becoming a key component in home networking. The dominant MAC protocol for high data-rate power-line communications, IEEE 1901, employs a CSMA/CA mechanism similar to the backoff process of 802.11. Existing performance evaluat ...

2014

Hydrologic controls on basin- scale distribution of benthic invertebrates

Andrea Rinaldo, Tom Ian Battin, Enrico Bertuzzo, Serena Ceola

Streamflow variability is a major determinant of basin-scale distributions of benthic invertebrates. Here we present a novel procedure based on a probabilistic approach aiming at a spatially explicit quantitative assessment of benthic invertebrate abundanc ...

American Geophysical Union2014

A dual-axis pointing mirror with moving-magnet actuation

Nico de Rooij, Caglar Ataman, Wilfried Noell, Sébastien Lani

A large-aperture and large-angle MEMS-based 2D pointing mirror is presented. The device is electromagnetically actuated by a moving-magnet/stationary-coil pair and potentially suited for high power laser beam shaping and beam pointing applications, such as ...

Institute of Physics2013

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