Results 11 to 20 of about 60,700 (201)

Null Controllability of a Nonlinear Age Structured Model for a Two-Sex Population

Abstract and Applied Analysis, 2021
This paper is devoted to study the null controllability properties of a nonlinear age and two-sex population dynamics structured model without spatial structure. Here, the nonlinearity and the couplage are at the birth level.
Amidou Traoré, Okana S. Sougué, Yacouba Simporé, Oumar Traoré   +3 more
doaj   +2 more sources

Simulating the impact of varying vegetation on West African monsoon surface fluxes using a regional convection-permitting model. [PDF]

Plant Environ Interact, 2023
Comparison between the use of varying vegetation fraction and fix vegetation fraction in regional climate models over West Africa: Case study of the Unified Model with focus on three different climatic zones. Abstract This study assessed the sensitivity of the West African climate to varying vegetation fractions.
Bamba A, Kouadio K, Toure NE, Jackson L, Marsham J, Roberts A, Yoshioka M, Anquetin S, Diedhiou A.   +8 more
europepmc   +2 more sources

Individual flowering phenology shapes plant–pollinator interactions across ecological scales affecting plant reproduction

Ecology and Evolution, Volume 13, Issue 1, January 2023., 2023
Using a farm‐scale experiment we investigated how intraspecific variation in flowering phenology and spatial heterogeneity in floral resources affected wild plant reproduction by modifying plant–pollinator interactions at the scale of the plant individual, the local assemblage, and the interaction network of agroecological infrastructures across the ...
Audrey Labonté, Lucie S. Monticelli, Mélinda Turpin, Emeline Felten, Emilien Laurent, Annick Matejicek, Luc Biju‐Duval, Chantal Ducourtieux, Eric Vieren, Violaine Deytieux, Stéphane Cordeau, David Bohan, Adam J. Vanbergen   +12 more
wiley   +1 more source

A parametric sensitivity analysis for prioritizing regolith knowledge needs for modeling water transfers in the West African critical zone

Vadose Zone Journal, Volume 20, Issue 6, November/December 2021., 2021
Abstract Hard rock aquifers (HRAs) in West Africa (WA) are located within a thick regolith layer. The representation of thick tropical regolith in integrated hydrological models lacks consensus on aquifer geometries and parameter ranges. Our main objective was to determine the knowledge requirements on saturated hydraulic conductivity (Ks) to model the
Amelie Herzog, Basile Hector, Jean‐Martial Cohard, Jean‐Michel Vouillamoz, Fabrice Messan Amene Lawson, Christophe Peugeot, Inge de Graaf   +6 more
wiley   +1 more source

Swell Generation Under Extra‐Tropical Storms

Journal of Geophysical Research: Oceans, Volume 126, Issue 9, September 2021., 2021
Abstract Storms propagate over the ocean and create moving patches of strong winds that generate swell systems. Here, we describe the dynamics of wave generation under a moving storm by using a simple parametric model of wave development, forced by a temporally and spatially varying moving wind field.
M. C. Hell, Alex Ayet, Bertrand Chapron
wiley   +1 more source

Lykaon, der Wolfsmann, und Mary Shelleys Frankenstein, or, The Modern Prometheus

Orbis Litterarum, Volume 76, Issue 2, Page 67-85, April 2021., 2021
Viele der rezenten Studien zur Ästhetik des Monströsen nehmen auf Michel Foucaults Vorlesungsreihe Les anormaux Bezug, in der er u. a. der diskursiven Transformation des Monsters von einem somatischen hin zu einem moralischen Abweichungsphänomen nachgeht.
Thomas Emmrich
wiley   +1 more source

A decision support tool to prioritize ballast water compliance monitoring by ranking risk of non‐indigenous species establishment

Journal of Applied Ecology, Volume 58, Issue 3, Page 587-595, March 2021., 2021
Partnerships between scientists and managers are essential for ensuring that best‐available science translates into effective adaptive management. Recognizing a need to inform ballast water management compliance inspections, a tool was created that automatically estimates relative risk of establishment of non‐indigenous species for arriving ships. This
Johanna N. Bradie, Sarah A. Bailey, Nessa O'Connor   +2 more
wiley   +1 more source

Muli‐UWB Antenna System Design for 5G Wireless Applications with Diversity

Wireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021
In this paper, we propose a compact Multiple Input Multiple Output (MIMO) antenna system with high isolation for wireless applications in 5G connected devices. This MIMO antenna system with the size of 92 × 88 mm2 consists of two elliptical antennas symmetrically arranged next to each other.
Marwa Daghari, Chaker Essid, Hedi Sakli, Kasturi Vasudevan   +3 more
wiley   +1 more source

Questioning the Equivalence Principle [PDF]

, 2001
The Equivalence Principle (EP) is not one of the ``universal'' principles of physics (like the Action Principle). It is a heuristic hypothesis which was introduced by Einstein in 1907, and used by him to construct his theory of General Relativity.
Antoniadis, Baessler, Casimir, Damour, Damour, Damour, Damour, Damour, Damour, Damour, Damour, Damour, Dickey, Einstein, Einstein, Fierz, Gasperini, Jordan, Jordan, Kaluza, Klein, Kopfermann, Perlmutter, Prestage, Salomon, Su, Thibault Damour, Turneaure, Webb, Will, Will, Williams   +31 more
core   +3 more sources

Caractérisation d’un cordon de soudure Par FSW : Cas des matériaux polymères

Revue Nature et Technologie, 2023
Le but de notre travail expérimental est de proposer un modèle d’outil qui pourrait être utilisé comme un outil prédictif pour obtenir une bonne soudure des polymères comme le PEHD par la technique de soudage par friction malaxage FSW ou un soudage ...
kaddour HACHELLAF, Hadj Miloud MEDDAH, El Bahri OUD CHIKH, Abdellah LOUNIS   +3 more
doaj   +6 more sources