Results 61 to 70 of about 4,567,624 (190)
Journal of Computer Assisted Learning, Volume 41, Issue 3, June 2025.ABSTRACT Background Serious games (SGs) have been increasingly utilised in various domains of education and training. These SGs are a compelling and impactful pedagogical tool that have demonstrated the potential to transform users' perspectives in a multitude of fields, including music.
Eleftheria Siklafidou +2 more
wiley +1 more source
A maximum principle for combinatorial Yamabe flow
Topology, 2005 20 pages, this is an almost entirely different paper.
openaire +2 more sources
Stability Analysis of Nondifferentiable Systems
Studies in Applied Mathematics, Volume 154, Issue 1, January 2025.ABSTRACT Differential equations with right‐hand side functions that are not everywhere differentiable are referred to as nondifferentiable systems. This paper introduces three novel methods to address stability issues in nondifferentiable systems.
Jiwoon Sim, Tianxu Wang, Hao Wang
wiley +1 more source
Comprehensive Safety Assessment of Hydrogen: From Production to Application in Energy Systems
International Journal of Energy Research, Volume 2025, Issue 1, 2025.In the quest for sustainable and clean energy alternatives to fossil fuels, hydrogen emerges as a front‐runner due to its high energy yield and environmentally friendly combustion byproduct, water. This study delves into the comprehensive lifecycle of hydrogen energy, from its production through various methods, storage, and transportation, to its ...
Ahmed Nazmus Sakib +5 more
wiley +1 more source
Journal of Cardiac Surgery, Volume 2025, Issue 1, 2025.Background This study aimed to examine the outcomes of cardiovascular surgery in Jehovah’s witnesses (JWs) according to surgical urgency (elective vs. emergency), investigate the relationship between surgical urgency and postoperative anemia progression, and determine the impact of postoperative anemia on overall mortality.
Tsuyoshi Yamabe +8 more
wiley +1 more source
Riemann Solitons on Homogeneous Siklos Spacetimes
Journal of Mathematics, Volume 2025, Issue 1, 2025.In this paper, we investigate the properties of Riemann solitons on homogeneous Siklos spacetimes. Siklos spacetimes, which are special solutions to Einstein’s equations with a wave‐like potential, provide a suitable setting for studying the geometric properties of Riemann solitons.
Mehdi Jafari +3 more
wiley +1 more source
Ricci‐Bourguignon Solitons With Certain Applications to Relativity
Journal of Mathematics, Volume 2025, Issue 1, 2025.This article concerns with the investigation of Ricci‐Bourguignon solitons and gradient Ricci‐Bourguignon solitons in perfect fluid space‐times and generalised Robertson–Walker space‐times. First, we deduce the criterion for which the Ricci‐Bourguignon soliton in a perfect fluid space‐time is steady, expanding or shrinking. Then, we establish that if a
Krishnendu De +4 more
wiley +1 more source
Ricci Solitons and Generalized Ricci Solitons Whose Potential Vector Fields Are Jacobi‐Type
Journal of Mathematics, Volume 2025, Issue 1, 2025.This paper is devoted to Ricci solitons admitting a Jacobi‐type vector field. First, we present some rigidity results for Ricci solitons (Mn, g, V, λ) admitting a Jacobi‐type vector field ξ and provide conditions under which ξ is Killing. We also present conditions under which the Ricci soliton (Mn, g, ξ, λ) is isometric to Rn.
Vahid Pirhadi +3 more
wiley +1 more source
Unconditional existence of conformally hyperbolic Yamabe flows [PDF]
Analysis & PDE, 2020 We prove global existence of instantaneously complete Yamabe flows on hyperbolic space of arbitrary dimension $m\geq3$ starting from any smooth, conformally hyperbolic initial metric. We do not require initial completeness or curvature bounds. With the same methods, we show rigidity of hyperbolic space under the Yamabe flow.
openaire +3 more sources