1,042 research outputs found
Approche ergonomique et pénibilité perçue du travail avec les tout-petits
No full textValléry Gérard, Leduc Sylvain. Approche ergonomique et pénibilité perçue du travail avec les tout-petits. In: Politiques sociales et familiales, n°109, 2012. Métiers de la petite enfance : registres et dimensions de l’activité. pp. 87-93
How inflation hawks escape expectations traps
Full text linkWhy did inflation increase so dramatically from the 1960s to the 1970s? One possible theory is that once people started believing inflation would rise, the Fed was forced to validate those expectations by increasing the money supply. In "How Inflation Hawks Escape Expectations Traps," Sylvain Leduc discusses this "expectations trap" hypothesis and uses a direct measure of expectations to see if the theory is consistent with the data.Inflation (Finance)
Replication data for: Learning in the Oil Futures Markets: Evidence and Macroeconomic Implications
No full textReplication data for the work in in the Oil Futures Markets: Evidence and Macroeconomic Implications by Sylvain Leduc, Kevin Moran, and Robert Vigfusso
Deficit-financed tax cuts and interest rates
Full text linkWhy do proposals to lower taxes often meet with opposition in Congress. One argument is that lowering taxes without an equivalent fall in government spending may lead to future budget deficits, which will translate into higher long-term interest rates and a lower level of income. Sylvain Leduc discusses the theoretical arguments under which budget deficits lead to higher interest rates. He also surveys empirical studies that used data on expected budget deficits to document the possibility that increases in future budget deficits are associated with higher real long-term interest rates.Deficit financing ; Taxation ; Interest rates
Mars Thermal Inertia and Surface Temperatures by the Mars Climate Sounder
No full textMars Thermal Inertia and Surface Temperatures by the Mars Climate Sounder
Sylvain Piqueux, David M. Kass, Armin Kleinböhl, Marek Slipski, Paul O. Hayne, Daniel J. McCleese, John T. Schofield, Nicholas Heavens
Jet Propulsion Laboratory, California Institute of Technology
4800 Oak Grove Drive
Pasadena, CA 91109
USA
Copyright 2023. All Rights Reserved.
Corresponding author: Sylvain Piqueux
Jet Propulsion Laboratory
M/S 183-301
4800 Oak Grove Drive
Pasadena, CA 91109
USA
[email protected]
Phone: 818-393-9595
Fax: 818-354-2494
Supporting files associated with the paper "Mars Thermal Inertia and Surface Temperatures by the Mars Climate Sounder
Atmospheric CO2 Depletion near the Surface in the Martian Polar Regions
No full textAtmospheric CO2 Depletion near the Surface in the Martian Polar Regions
Sylvain Piqueux, Paul O. Hayne, Armin Kleinböhl, David M. Kass, Mathias Schreier, Daniel J. McCleese, Mark I. Richardson, John T. Schofield, James H. Shirley, Nicholas Heavens
Jet Propulsion Laboratory, California Institute of Technology
4800 Oak Grove Drive
Pasadena, CA 91109
USA
Department of Astrophysical and Planetary Sciences and Laboratory for Atmospheric and Space Physics
University of Colorado Boulder
USA
Aeolis Research
USA
Space Science Institute
USA
Copyright 2022. All Rights Reserved.
Corresponding author: Sylvain Piqueux
Jet Propulsion Laboratory
M/S 183-301
4800 Oak Grove Drive
Pasadena, CA 91109
USA
[email protected]
Phone: 818-393-9595
Fax: 818-354-2494
Supporting information associated with the paper "Atmospheric CO2 Depletion near the Surface in the Martian Polar Regions" by Piqueux et al. consists of 17 files generated as part of this work and used to create the figures of this paper
Gérard Valléry, Sylvain Leduc, Les risques psychosociaux
No full textLe vocable « risques psychosociaux » s’est largement répandu ces dernières années dans l’espace public notamment en raison des événements dramatiques dans les secteurs automobiles et des télécommunications. La parution d’un ouvrage sur ce thème dans la collection encyclopédique des Presses Universitaires de France n’était, dès lors, plus qu’une question de temps. G. Valléry & S. Leduc se sont livrés à cet exercice délicat d’exposer un thème en 128 pages. Les auteurs empruntent une voie relati..
Gardening of the Martian Regolith by Diurnal CO2 Frost and the Formation of Slope Streaks
No full textGardening of the Martian Regolith by Diurnal CO2 Frost and the Formation of Slope Streaks
L.Lange, S.Piqueux, C.S.Edwards
Jet Propulsion Laboratory, California Institute of Technology
Copyright 2022. All rights reserved.
Corresponding author: Sylvain Piqueux
Jet Propulsion Laboratory
M/S 183-301
4800 Oak Grove Drive
Pasadena, CA 91109
USA
[email protected]
Phone: 818-393-9595
Fax: 818-354-2494
Supporting information associated with the paper "Gardening of the Martian Regolith by Diurnal CO2 Frost and the Formation of Slope Streaks" by L. Lange et al. consists of 9 files generated as part of this work and used to generate several of the figures of this paper
Prospect for agricultural biogas as a vehicle fuel in Northern Italy
Full text linkIn recent years, Italy has become the third largest agricultural biogas producer in the world after China and Germany.
The utilization of biogas in the country is still restricted to power generation with limited use of cogenerated heat, whereas other utilization pathways focusing on biogas upgrading to biomethane remain unexplored.Given the high development of natural gas pipelines and the presence of numerous compressed natural gas (CNG) refuelling sta- tions in Northern Italy, significant market opportunities for biogas may also arise in the transport sector.
The use of biomethane as a vehicle fuel offers several advantages compared with other biofuels, such as first-generation bioethanol and biodiesel, the most prominent of which being a more favourable energy balance and the possibility of adopting a wide variety of organic materials for its production. However, the requirement to upgrade the biogas to biomethane of adequate quality for transport fuel use, the compression of the gas for storage and transport, and the lack of refuelling infrastructure, represent significant barriers to the deployment of biogas-based vehicle fuels in many European countries.
In this thesis, prospects for agricultural biogas in Northern Italy have been explored. The focus is on its utilization as compressed biomethane for vehicles (CBM), as com- pared to other utilization pathways (i.e. power only option, simultaneous production of electricity and heat and injection of biomethane into the national gas grid).
The methodology considers the use of different spatially explicit optimization models to forecast future biogas supply chain structures that minimize overall costs and en- vironmental impact. Previous and actual biogas promotion schemes and other policy instruments to foster the production of biomethane as a vehicle fuel have been included in the assessment and applied to regional as well as macro regional case studies.
The results show that upgrading biogas for transport applications carries some envi- ronmental advantages, especially compared with its utilization solely for the production of electricity. However, promoting the development of a biomethane market solely with the introduction of environmental taxes is the least effective option as the environmental benefit in terms of emissions mitigation is very little. On the other hand, the intro- duction of current biogas incentive mechanisms would favour the development of CMB technologies in areas with promising biomethane market potentials
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