Results 41 to 50 of about 748,367 (153)

222Rn and 220Rn Levels in Drinking Water, the Related Health Implications, and Influencing Environmental Parameters in the Volcanic Area of Nkongsamba, Cameroon

Applied and Environmental Soil Science, Volume 2026, Issue 1, 2026.
Radon (222Rn) and thoron (220Rn), both naturally occurring radioactive gases, are significant contributors to radiation exposure, posing risks such as lung and stomach cancer. This study assesses radon and thoron concentrations in drinking water sources within the volcanic region of Nkongsamba, Cameroon.
Cebastien Joel Guembou Shouop, Raoul Fogue, Jean Felix Beyala Ateba, Mvoufo Fokou, Augustin Simo, Maurice Ndontchueng Moyo, Venkatramanan Senapathi   +6 more
wiley   +1 more source

Analysis of Tools for the Development of Conversational Agents

Computer Sciences & Mathematics Forum, 2023
Conversational agents are being increasingly adopted in various domains, such as e-commerce and customer services, and as a direct communication channel between companies and end-users. Several tools have been developed to facilitate their definition and
Lamya Benaddi, Charaf Ouaddi, Ismaïl Khriss, Brahim Ouchao   +3 more
doaj   +1 more source

Optimal Harvesting of a Holling Type 2 Gordon–Schaefer Bioeconomic Model

International Journal of Differential Equations, Volume 2026, Issue 1, 2026.
Techniques of bioeconomic modeling of the fisheries, developed from the end of the 50s, call primarily upon the neoclassic economic theory. Their use allowed significant theoretical projections in the field of adjustment of fishing, but their operational virtues remain weak, in particular, because the assumptions which underlie them are far away from ...
Tetchi Albin N’Guessan, David Paul Tuo, Josué Carlos Israël Oulai, Kartik Ariyur   +3 more
wiley   +1 more source

An Innovative Approach to Improving Residual Stress Distribution and Metallurgical Refinement of Forged AA7175 Applied in the Aeronautical Industry

Applied Mechanics, 2022
In this study, a novel approach for residual stress (RS) distribution on forged AA7175 is considered to replace and simplify the manufacturing process, based on the lean manufacturing concept.
Kadiata Ba, Sasan Sattarpanah Karganroudi, Ahmad Aminzadeh, Mousa Javidani, Mohammad Saleh Meiabadi   +4 more
doaj   +1 more source

Mathematical Analysis of a Periodic Delay Differential System for Mosquito Population Suppression Using Wolbachia‐Infected Males Releases

Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.
This paper presents a mathematical analysis of a nonautonomous delay differential system. This system models mosquito population dynamics under the influence of seasonal environmental fluctuations and a biological control strategy based on the continuous release of Wolbachia‐infected males.
Wendpanga Birba, Boureima Sangaré, Serge M. A. Somda, Gaetano Siciliano   +3 more
wiley   +1 more source

Integrability of Reeb Distribution Associated to a Generalized Engel Manifold

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we define a generalized Reeb distribution of an Engel 4n‐manifold and give a necessary and sufficient condition for integrability of this Reeb distribution which gives a generalization of some results of N. Pia about Reeb distributions of Engel 4‐manifolds.
Serigne Abdoul Aziz Dramé, Cheikh Khoule, Hamidou Dathe, Murat Altunbaş   +3 more
wiley   +1 more source

Developing Conversational Agent Using Deep Learning Techniques

Computer Sciences & Mathematics Forum, 2023
Recent advances in artificial intelligence and natural language processing have been widely used in recent years, and one of the best applications of these technologies is conversational agents.
Charaf Ouaddi, Lamya Benaddi, Ismaïl Khriss, Abdeslam Jakimi   +3 more
doaj   +1 more source

Self‐Supervised Learning Based Clustering Workflow for Exploring Seismological Data From Dense Networks

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract A key challenge in environmental seismology is processing seismic data to study source physics, natural and human‐induced forcings, and geological structures such as landslides, glaciers, and volcanoes. Seismic arrays with dozens of stations have expanded data set sizes, and this, combined with signal complexity and high noise levels, makes it
Joachim Rimpot, Clément Hibert, Jean‐Philippe Malet, Germain Forestier, Jonathan Weber   +4 more
wiley   +1 more source

A Bilevel Optimal Control Method and Application to the Hybrid Electric Vehicle

Optimal Control Applications and Methods, Volume 46, Issue 3, Page 1104-1119, May/June 2025.
Schematic representation of the Macro‐Micro method. ABSTRACT In this article we present a new numerical method based on a bilevel decomposition of optimal control problems. A strong connection between the proposed method and the classical indirect multiple shooting method is shown in the regular case, thanks to a link between the Bellman's value ...
Olivier Cots, Rémy Dutto, Sophie Jan, Serge Laporte   +3 more
wiley   +1 more source

Structure Preserving Nodal Continuous Finite Elements via Global Flux Quadrature

Numerical Methods for Partial Differential Equations, Volume 41, Issue 1, January 2025.
ABSTRACT Numerical methods for hyperbolic PDEs require stabilization. For linear acoustics, divergence‐free vector fields should remain stationary, but classical Finite Difference methods add incompatible diffusion that dramatically restricts the set of discrete stationary states of the numerical method. Compatible diffusion should vanish on stationary
Wasilij Barsukow, Mario Ricchiuto, Davide Torlo   +2 more
wiley   +1 more source