Results 41 to 50 of about 156,033 (186)

4-D Gradient Vector Flow : segmentation par surface active pour images multi-composantes [PDF]

, 2013
National audienceDans cet article, nous généralisons le flux de vecteurs gradients à la segmentation par surface active d'images 3-D à valeurs vectorielles.
Buvat, Irène, Gonzalez, P., Guilloteau, Denis, Jaouen, Vincent, Stute, Simon, Tauber, Clovis   +5 more
core   +2 more sources

Modelling the Spatio‐Temporal Effects of Water Level Control in an Agricultural Collector Ditch Network

Irrigation and Drainage, Volume 74, Issue 4, Page 1717-1729, October 2025.
ABSTRACT The study focused on modelling open channel flow in an agricultural ditch network. The objectives were (1) to set up a computational tool to explore the hydraulic impacts of water level control in a collector ditch network and (2) to test the effects of damming height and ditch flow resistance on the water level and its relation to field ...
Elina Paavonen, Heidi Salo, Aleksi Salla, Harri Koivusalo   +3 more
wiley   +1 more source

Human development, societal stability and bird capital predict global tourist eBirding activity

People and Nature, Volume 7, Issue 10, Page 2486-2499, October 2025.
Abstract Birdwatching tourism is one of the fastest growing sectors within nature‐based tourism. This specialized form of ecotourism has the potential to bring economic and conservation benefits to tropical countries, which house the richest avifaunas, but little is known about the factors driving birdwatchers' decisions about which country to visit ...
Natalia Ocampo‐Peñuela, Sam de Alfaro, Montague H. C. Neate‐Clegg, Luca de Alfaro, Katarina Bjegovic, R. Scott Winton   +5 more
wiley   +1 more source

“Semper supra”? Trump administration policy narratives and the creation of the space force

Review of Policy Research, Volume 42, Issue 5, Page 1157-1183, September 2025.
Abstract In 2019, the Donald Trump administration rejected the draft Treaty on the Prevention of Placement of Weapons in Space (PPWT) in the UN Conference on Disarmament and instead created the Space Force, the first new US military service branch established in decades.
Jeffrey S. Lantis
wiley   +1 more source

Reduced temporal turnover in carabid communities enhances biomass stability in agricultural landscapes

Journal of Animal Ecology, Volume 94, Issue 7, Page 1410-1421, July 2025.
The interannual stability of the carabid biomass in agricultural fields can be maximised by supporting the in‐field mean alpha‐richness that reduces their temporal beta‐diversity. Increasing crop phenology diversity at the landscape level also stabilises carabid biomass over time. Abstract While the temporal stability of plant communities has been well
Lucile Muneret, Audrey Alignier, Benoît Ricci, Alexandre Dosset, Roland Allart, Chantal Ducourtieux, Emilien Laurent, Stéphanie Aviron, Aude Vialatte, Sandrine Petit   +9 more
wiley   +1 more source

Biogeographical Regions and Climate Change: Lanternfishes Shed Light on the Role of Climatic Barriers in the Southern Ocean

Global Change Biology, Volume 31, Issue 6, June 2025.
We developed a method to predict how groups of species may shift with climate change by modelling biogeographical regions—areas with similar species. Focusing on lanternfishes in the Southern Ocean, we found two main regions separated by temperature. Because climate acts as a barrier, species within each region may respond similarly to climate change ...
Cam Ly Rintz, Philippe Koubbi, Berta Ramiro‐Sánchez, Clara Azarian, Jilda Alicia Caccavo, Cédric Cotté, Eric Goberville, Claire Godet, Percy Alexander Hulley, Rémy Le Goff, Fabien Leprieur, Marine Robuchon, Baptiste Serandour, Boris Leroy   +13 more
wiley   +1 more source

Modélisation à 3-D de l’influence de la taille des grains et de la vitesse de recombinaison aux joints de grain sur une photopile au silicium poly cristallin sous éclairement concentré

Revue des Énergies Renouvelables, 2011
Dans cet article, nous présentons une modélisation à 3 dimensions de l’influence de la taille de grains, de la vitesse de recombinaison aux joints de grain et du champ électrique de gradient de concentration sur la distributions des porteurs de charge ...
M. Zoungrana, I. Zerbo, F.I. Barro, R. Sam, F. Touré, M.L. Samb, F. Zougmoré   +6 more
doaj  

Polyphonie narrative et heuristique dans L’Erreur de Cecil Saint‐Laurent

Orbis Litterarum, Volume 80, Issue 3, Page 239-268, June 2025.
Résumé Dans cette étude, nous focaliserons notre attention sur deux éléments qui nous semblent essentiels dans le roman L’Erreur de Cecil Saint‐Laurent : le jeu des points de vue narratifs et le processus heuristique. Aussi, d’une part, et au niveau de la diégèse, nous pencherons‐nous sur la transgression des niveaux narratifs.
Daniela Ventura
wiley   +1 more source

Facteurs optiques et géométriques caractérisant un concentrateur cylindro-parabolique

Revue des Énergies Renouvelables, 2011
Le présent travail propose une étude théorique de la conversion de l’énergie solaire en énergie thermique dans un champ de concentrateurs cylindro-parabolique (CCP).
D. Guerraiche, A. Benderradji, H. Benmoussa   +2 more
doaj  

Elaboration of an Elasto-Plastic Model for High Porosity Chalks. Application to the Compaction of Petroleum Reservoirs Elaboration d'un modèle de comportement élasto-plastique pour les craies très poreuses. Application à la compaction des réservoirs pétroliers

Oil & Gas Science and Technology, 2006
This paper presents a study of the compaction of petroleum reservoirs applied to very porous carbonate rocks such as chalk. In production estimates made in reservoir engineering, the processing of the mechanical problem is often greatly simplified.
Shahrour I., Longuemare P., Onaisi A.
doaj   +1 more source