Results 51 to 60 of about 4,370 (140)

Physiological Responses to Virtual Reality‐Based Stress Regulation and Relaxation Interventions: A Systematic Review

Stress and Health, Volume 42, Issue 2, April 2026.
ABSTRACT Physiological markers are increasingly used to monitor individuals undergoing Virtual Reality (VR) stress interventions. However, several challenges arise when employing these markers to assess the impact of VR stress interventions. This systematic review synthesises and critically discusses the literature on VR stress interventions across ...
Lisanne M. Robbemond, Matthijs L. Noordzij, Catheleine M. G. van Driel, Wim Veling   +3 more
wiley   +1 more source

Global phase portraits of quadratic systems with an ellipse and a straight line as invariant algebraic curves

Electronic Journal of Differential Equations, 2015
In this article we study a class of integrable quadratic systems and classify all its phase portraits. More precisely, we characterize the class of all quadratic polynomial differential systems in the plane having an ellipse and a straight line as ...
Jaume Llibre, Jiang Yu
doaj  

Dynamics of the Isotropic Star Differential System from the Mathematical and Physical Point of Views

AppliedMath
The following differential quadratic polynomial differential system  dxdt=y−x, dydt=2y−yγ−12−γy−5γ−4γ−1x, when the parameter γ∈(1,2] models the structure equations of an isotropic star having a linear barotropic equation of state, being x=m(r)/r where m ...
Joan-Carles Artés, Jaume Llibre, Nicolae Vulpe   +2 more
doaj   +1 more source

Arbitrary Total Angular Momentum Vectorial Holography Using Bi‐Layer Metasurfaces

Advanced Materials, Volume 38, Issue 15, 12 March 2026.
A bi‐layer metasurface platform is presented for arbitrary total angular momentum vectorial holography, where polarization and orbital angular momentum are exploited as independent multiplexing dimensions. By overcoming symmetry limitations of single‐layer designs, the approach generates distinct vectorial holographic images for each orthogonal TAM ...
Joonkyo Jung, Hyeonhee Kim, Jonghwa Shin
wiley   +1 more source

Fostering Creativity Through Educational Interventions in Higher Education: A Systematic Review

The Journal of Creative Behavior, Volume 60, Issue 1, March 2026.
ABSTRACT Creativity has gained relevance over the years in education, and especially recently due to its consideration as a transversal competency in higher education, but there is still a lack of integration of knowledge. This qualitative systematic review explores literature on educational interventions designed to enhance creativity and investigates
Carlota Rodríguez‐Silva, Jessica Cabrera Cuevas, Verónica Violant‐Holz   +2 more
wiley   +1 more source

Acute Effects of Transcutaneous Tibial Nerve Stimulation on Autonomic Nervous System Activity in Healthy Volunteers: An Exploratory Study

Neurourology and Urodynamics, Volume 45, Issue 3, Page 627-634, March 2026.
ABSTRACT Aim Autonomic nervous system (ANS) imbalance may contribute to functional pelvic disorders such as overactive bladder (OAB). Transcutaneous tibial nerve stimulation (TTNS) is a non‐invasive therapy for OAB; however, its autonomic modulation mechanisms remain unclear. This exploratory study evaluated the acute effects of TTNS on ANS activity in
Javier A. Muñoz, Carla Basualto‐Alarcón, Matías D. del Camino, Diego Leiva, Pablo Gálvez, Joaquín García, Gabriela Asenjo, Alfonso León, Joaquín Soto, Juan P. Valdevenito   +9 more
wiley   +1 more source

On the Geometric Aspects of Architectural Compositions

Journal of Architectural and Engineering Research
We consider different aspects of the application of non-Euclidean geometries in architectural compositions. The main attention is put on Lobachevski's and Mandelbrot's fractal geometry.
Aren Nahapetyan, Linda Khachatryan
doaj   +1 more source

The Immune‐Autonomic Interface in Aging: Baseline Immune Profile Shapes Cardiac Autonomic Response to Exercise

Aging Cell, Volume 25, Issue 3, March 2026.
In 83 older adults, baseline lymphocyte phenotypes quantified by flow cytometry predicted the magnitude and direction of HRV shifts during a 2‐min step test and recovery. Bayesian models show that the immune landscape shapes exercise autonomic trajectories in a domain‐specific manner, revealing heterogeneity in physiological resilience.
Matías Castillo‐Aguilar, Lindybeth Sarmiento Varón, Carolina Pérez, Roberto Uribe‐Paredes, Marcelo A. Navarrete, Cristian Nuñez‐Espinosa   +5 more
wiley   +1 more source

New Exploration of Phase Portrait Classification of Quadratic Polynomial Differential Systems Based on Invariant Theory

AppliedMath
After linear differential systems in the plane, the easiest systems are quadratic polynomial differential systems in the plane. Due to their nonlinearity and their many applications, these systems have been studied by many authors.
Joan Carles Artés, Laurent Cairó, Jaume Llibre   +2 more
doaj   +1 more source

On the Euler characteristic of S$S$‐arithmetic groups

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We show that the sign of the Euler characteristic of an S$S$‐arithmetic subgroup of a simple algebraic group depends on the S$S$‐congruence completion only, except possibly in type 6D4${}^6 D_4$. Consequently, the sign is a profinite invariant for such S$S$‐arithmetic groups with the congruence subgroup property. This generalizes previous work
Holger Kammeyer, Giada Serafini
wiley   +1 more source