Results 11 to 20 of about 3,337 (139)

Space‐Dependent Sobolev Gradients as a Regularization for Inverse Radiative Transfer Problems

open access: yesMathematical Problems in Engineering, Volume 2016, Issue 1, 2016., 2016
Diffuse optical tomography problems rely on the solution of an optimization problem for which the dimension of the parameter space is usually large. Thus, gradient‐type optimizers are likely to be used, such as the Broyden‐Fletcher‐Goldfarb‐Shanno (BFGS) algorithm, along with the adjoint‐state method to compute the cost function gradient.
Y. Favennec   +5 more
wiley   +1 more source

Efficacité énergétique : des principes aux réalités [PDF]

open access: yes, 2016
Efficacité énergétique : des principes aux réalités / collectif ; Paul Baudry, coord. Paris : Lavoisier, 2015, 392 p. (Coll. EDF R&D) - 79.00 euros http://www.lavoisier.fr/livre/environnement/l-efficacite-energetique/baudry/descriptif-9782743020149 ...
Danièle Revel
core   +2 more sources

Pompage énergétique: conception, efficacité, expérimentation [PDF]

open access: yes, 2007
International audienceEnergy pumping consists in irreversible transfer of energy from a main structure, to be isolated, towards an auxiliary, essentially nonlinear structure designed to create this transfer owing to localisation of a nonlinear normal ...
Pernot, Stéphane   +2 more
core   +3 more sources

Optimizing gasification in downdraft fixed-bed gasifier through experimental and kinetic modeling

open access: yesCase Studies in Thermal Engineering
Gasification is an effective way of converting biomass into electricity. However, determining optimal conditions to reach higher temperature gradients and ensure thermal stability of the reactors for syngas production is challenging.
Hamado Ouedraogo   +3 more
doaj   +1 more source

Efficacité énergétique [PDF]

open access: yes, 2018
MasterLe document contient un diaporama, des exercices corrigés et un problème.Plan du diaporama : Introduction à l'énergie, Notions de rendementÉmissions de gaz à effet de serreProcédés énergétiques et leur efficacité Réglementation en matière d ...
Multon, Bernard
core   +3 more sources

Advancing small-scale biomass gasification (10–200 kW) for energy access: Syngas purification, system modeling and the role of artificial intelligence-A review

open access: yesEnergy Conversion and Management: X
Agro-industrial and food industries produce significant lignocellulosic bio-waste, which has a negative impact on the environment if poorly managed. Gasification provides a solution by converting this waste into energy.
Hamado Ouedraogo   +2 more
doaj   +1 more source

Efficacité énergétique et formes urbaines : élaboration d’un outil d’optimisation morpho-énergétique

open access: yesCybergeo, 2016
This paper deals with the link between urban forms and energy balance. Nowadays, many French urban planners recommend dense and compact cities to suit the imperatives of sustainable development.
Laëtitia Arantes   +3 more
doaj   +1 more source

Improving optical efficiency of linear Fresnel collectors in the Sahel via position and length adjustment

open access: yesSolar Compass
Linear Fresnel concentrators are promising technologies for solar thermal applications, but their performance is often hindered by end losses and inefficiencies related to receiver design and placement. This study aimed to enhance LFC optical performance
Souwera Stan Lionnel Somda   +1 more
doaj   +1 more source

Evaluating Water–Energy–Food Nexus Strategies to Address Resource Scarcity in the Crocodile River Catchment, South Africa

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT The water–energy–food (WEF) nexus approach highlights the interdependence of water, energy and food resources, all of which play central roles in agriculture, especially irrigation. A WEF nexus lens was applied to Mpumalanga's Crocodile River catchment, a vital irrigation area that significantly contributes to South Africa's staple food ...
N. Masekwana   +3 more
wiley   +1 more source

Évaluation des besoins de formation des technologues en efficacité énergétique : rapport final / [PDF]

open access: yes, 1993
"Rapport... présenté à Monsieur André Gélinas, Conseiller, Service développement commercial et technologique, Efficacité énergétique, Hydro-Québec."(rel.
Hydro-Québec. Efficacité énergétique (Programme)   +1 more
core  

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