Publications associées à Perte sèche

Walrasian Dynamics in Multi-unit Markets

In a multi-unit market, a seller brings multiple units of a good and tries to sell them to a set of buyers that have monetary endowments. While a Walrasian equilibrium does not always exist in this model, natural relaxations of the concept that retain its ...

AAAI Press2019

Welfare effects of technology-based climate policies in liberalized electricity markets: seeing beyond total system cost

Philippe Thalmann, Frank Vöhringer, Sophie Maire

This paper is a contribution to assessing the Swiss energy transition, with an emphasis on the consequences of decommissioning the nuclear power plants for the electricity market and the whole economy. We expect that increased renewable generation and dema ...

2019

Change of beam distribution due to decoherence in the presence of transverse feedback

Xavier Buffat, Sondre Vik Furuseth

The effect of Landau damping is often calculated based on a Gaussian beam distribution in all degrees of freedom. The stability of the beam is however strongly dependent on the details of the distribution. The present study focuses on the change of bunch d ...

IOP PUBLISHING LTD2019

From COP21 pledges to a fair 2°C pathway

Marc Vielle, Frédéric Louis François Babonneau, Alain Haurie

At COP21, about 160 countries proposed the so-called INDCs that define GHG abatement objectives by 2030. While encouraging, these commitments are not ambitious enough to achieve the 2°C threshold by 2100, and further negotiations are needed for sharing the ...

2018

Meta-Modeling to Assess the Possible Future of Paris Agreement

Marc Vielle, Frédéric Louis François Babonneau, Alain Haurie, Alain Bernard

In the meta-modeling approach, one builds a numerically tractable dynamic optimization or game model in which the parameters are identified through statistical emulation of a detailed large scale numerical simulation model. In this paper, we show how this ...

SPRINGER2018

Combining Structural and Timing Errors in Overclocked Inexact Speculative Adders

Christian Enz, Vincent Frédéric Camus, Mattia Cacciotti, Yu Jiang, Xun Jiao

Worst-case design is used in IoT devices and high performance data centers to ensure reliability, leading to a power efficiency loss. Recently, approximate computing has been proposed to trade off accuracy for efficiency. In this paper, we use Inexact Spec ...

Ieee2017

Managing morning commute with parking space constraints in the case of a bi-modal many-to-one network

Wei Liu, Fangni Zhang

Recently, some studies examined how downtown parking space limitation re-shapes the morning commute in the case of a single origin-destination network. This paper further formulates and analyses the commuting equilibrium problem of both mode and departure ...

Taylor & Francis Ltd2016

Assessment of balanced burden-sharing in the 2050 EU climate/energy roadmap: a metamodeling approach

Marc Vielle, Frédéric Louis François Babonneau, Alain Haurie

In this paper we propose a non-cooperative meta-game approach to designing and assessing climate agreements among 28 European countries that will be compatible with the EU 2050 climate target. Our proposed game model is identified through statistical emula ...

Springer Verlag2016

Efficiency of a highway use reservation system for morning commute

Wei Liu

This paper examines the design and efficiency of a highway use reservation system where commuters need reservations to access a highway facility at specific times. We show that, by accommodating reservation requests to the level that the highway capacity a ...

Pergamon-Elsevier Science Ltd2015

Impact of uncertain CCS deployment on EU climate negotiations

Marc Vielle, Frédéric Louis François Babonneau, Alain Haurie

In this paper we propose a stochastic non-cooperative meta-game approach to assess the role of uncertain CCS deployment on climate agreements among 28 European countries. The game model is identified through statistical emulation of a large set of numerica ...

2015

Within Individual Variation in Preferences: Equity Effects of Congestion Charges

Michel Bierlaire

The purpose of this research was to explore how the values of travel time (VTT) and preferences for different modes vary within individuals compared with the variation between observed trips. With 6-week revealed preference panel data and stated preference ...

National Academy of Sciences2013

A Robust Meta-Game for Climate Negotiations

Marc Vielle, Frédéric Louis François Babonneau, Alain Haurie

This paper deals with an application of the robust equilibrium concept in game theory to the assessment of the possible international agreement on climate that could be achieved in the conference of the parties negotiations organized by the UNFCCC. It is s ...

Springer Verlag2013

A New Planar Antenna Element For Ka-Band Applications

Juan Ramon Mosig, Jean-François Zürcher, Rafal Glogowski

One of the most promising bands for long-range radiocommunications is the Ka-band (25-40 GHz). This is due to the existence of a natural radio transmission window around 30 GHz. Both terrestrial and satellite transmission systems are planned on this freque ...

2011

Design methodology of an electric vehicle hybrid energy storage unit for improved energy efficiency

Philippe Barrade

This work proposes a design methodology that allows designing the energy storage unit of an electric vehicle in order to minimize the required energy and the resulting losses. A simple analytical model of the vehicle losses is derived. Driving conditions a ...

2010

Dependence of the ac loss on the aspect ratio in a cable in conduit conductor

Pierluigi Bruzzone

The coupling current loss in rectangular superconducting cables is strictly dependent on their aspect ratio, which has an impact on the area linked by the field variation and consequently on the currents induced between strands. The relation between the ac ...

2010

M-DPOP: Faithful distributed implementation of efficient social choice problems

Boi Faltings, Adrian Petcu, David C. Parkes

In the efficient social choice problem, the goal is to assign values, subject to side constraints, to a set of variables to maximize the total utility across a population of agents, where each agent has private information about its utility function. In th ...

2008

An innovative Inductive Air-Gap Monitoring System for Large Low Speed Hydro-Generators

Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter

Large low speed hydro-generators (Fig. 1) have a very small specific air-gap to stator bore diameter ratio making it virtually impossible to have a perfect centering of the rotor within the stator during the assembly process. Therefore the machines are ope ...

2008

Reducing carbon dioxide emissions by gas turbine processes | [CO2-Reduktion bei gasturbinen-prozessen]

François Maréchal

Selective process modifications were considered among the possible process variations for carbon dioxide separation in natural gas fired combined gas and steam turbine power plants that differ greatly among themselves in terms of additional expense (effici ...

2007