Results 21 to 30 of about 49,874 (163)

Hybrid Reaction–Diffusion Epidemic Models: Dynamics and Emergence of Oscillations

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we construct a hybrid epidemic mathematical model based on a reaction–diffusion system of the SIR (susceptible‐infected‐recovered) type. This model integrates the impact of random factors on the transmission rate of infectious diseases, represented by a probabilistic process acting at discrete time steps.
Asmae Tajani   +2 more
wiley   +1 more source

Simulation numérique d'un bruleur à biogaz destiné aux moteurs Stirling

open access: yesRevue des Énergies Renouvelables, 2022
The design of a biogas burner for Stirling engines depends on its ability to provide a sufficient heat which is not produced by conventional burners because of the limitation of the contact surface between flame-hot head and the low methane content in ...
Ridha Alliche   +2 more
doaj   +1 more source

Kinship through code, personhood as node: AI afterlives and new technologies of the self Parenté par le code, personne nodale : vie posthume dans l'IA et nouvelles technologies du moi

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
This article examines how emerging generative AI technologies in Europe and North America are being used to reanimate the dead, prompting users to define the ‘edges’ of self and personhood through coding practices. These technologies invite new engagements with fundamental questions of relatedness and the construction of the self, challenging and ...
Jennifer Cearns
wiley   +1 more source

Scale‐robust fibre orientation analysis of hair using two‐dimensional Fourier transform

open access: yesInternational Journal of Cosmetic Science, EarlyView.
We present a simple and robust method to quantify hair fibre orientation using 2D‐DFT. It works with standard images and extracts directional features at multiple scales. This enables objective evaluation of cosmetic treatments and product effects. Abstract Objective To address the current lack of standardized tools for evaluating hair appearance in ...
Motoki Takeda, Sinyoung Lee, Ken Kiyono
wiley   +1 more source

Un outil de dimensionnement des filets pare-pierres : le logiciel ECRANS

open access: yesSciences, Eaux & Territoires, 2010
Les instabilités rocheuses figurent parmi les aléas rencontrés fréquemment en zone de montagne. Afin de réduire le risque associé, la stratégie dite passive vise à mettre en place des techniques de protection qui permettent de contrôler la trajectoire ...
F. NICOT
doaj   +1 more source

A suitable parametrization to simulate slug flows with the Volume-Of-Fluid method [PDF]

open access: yes, 2012
Diffuse–interface methods, such as the Volume-Of-Fluid method, are often used to simulate complex multiphase flows even if they require significant computation time.
Augier, Frédéric   +3 more
core   +4 more sources

The Role of Near Solstice Solar Radiation on the Pacific Northwest Heatwave of June 2021

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In late June 2021, the Pacific Northwest experienced a severe heatwave, shattering temperature records and making worldwide news. The extreme temperatures have been attributed to an anomalously strong atmospheric block, high moisture content of upstream air, and dry soils.
Shauna Ndoping   +5 more
wiley   +1 more source

Apports de la simulation numérique pour l'étude des technologies d'épandage de produits organiques

open access: yesSciences, Eaux & Territoires, 2003
Le développement de la simulation numérique, en particulier dans le domaine de la mécanique des fluides, facilite l'étude et la mise au point d'équipements dans de nombreux secteurs d'application.
F. THIRION
doaj  

Sub‐THz Multifunctional Metasurfaces for Independent Transmission or Reflection Phase Manipulation

open access: yesAdvanced Optical Materials, Volume 14, Issue 4, 27 January 2026.
This article presents a rigorous analysis, design, and characterization of a novel sub‐THz metalens and reflective metasurface. Unlike bulky optical systems, the proposed thin, planar metasurface enables dual‐band full‐space wavefront control, via low‐loss transmission and reflection phase tuning, offering compact integration and improved ...
Bilal Ouardi   +5 more
wiley   +1 more source

Étude concernant l’effet de mise à la terre dans le système de protection liaison au neutre [PDF]

open access: yesBulletin of the Polytechnic Institute of Jassy: Constructions, Architechture Section, 2009
La sécurité des consommateurs de l’énergie électrique fait partie des principales demandes de la Loi 10/95, concernant la qualité dans les bâtiments. Le risque d’un choc électrique doit être diminué en adoptant un système de protection basé sur un moyen ...
Jan Ignat   +2 more
doaj  

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