Results 51 to 60 of about 679,613 (205)

Well-posedness and Ulam-Hyers stability results of solutions to pantograph fractional stochastic differential equations in the sense of conformable derivatives

AIMS Mathematics
One kind of stochastic delay differential equation in which the delay term is dependent on a proportion of the current time is the pantograph stochastic differential equation.
Wedad Albalawi, Muhammad Imran Liaqat , Fahim Ud Din, Kottakkaran Sooppy Nisar, Abdel-Haleem Abdel-Aty   +4 more
doaj   +1 more source

The Role of the Brain in Conscious Processes: A New Way of Looking at the Neural Correlates of Consciousness

Frontiers in Psychology, 2018
This article presents a new interpretation of the consciousness-related neuroscientific findings using the framework of stochastic electrodynamics (SED), a branch of physics that sheds light on the basic principles underlying quantum systems.
Joachim Keppler
doaj   +1 more source

Performance Analysis and Reliability Prediction of Multi‐State Service Systems With Multiple Failure Modes of Unreliable Server: An Engineering Perspective

Engineering Reports, Volume 7, Issue 7, July 2025.
Flow chart highlighting the service mechanism of MRP with impatience and working breakdown of the server. ABSTRACT The long‐term reliability of a machining system is essential for ensuring the uninterrupted operation of an automated manufacturing process.
Shreekant Varshney, Mohit Bajaj, Kapil Kumar Choudhary, Mukesh Pushkarna, Ievgen Zaitsev   +4 more
wiley   +1 more source

GeoDGP: One‐Hour Ahead Global Probabilistic Geomagnetic Perturbation Forecasting Using Deep Gaussian Process

Space Weather, Volume 23, Issue 6, June 2025.
Abstract Accurately predicting the horizontal component of ground magnetic field perturbation (dBH ${B}_{H}$), a key quantity for calculating the geomagnetically induced currents (GICs), is crucial for assessing the space weather impact of geomagnetic disturbances.
Hongfan Chen, Gabor Toth, Yang Chen, Shasha Zou, Zhenguang Huang, Xun Huan   +5 more
wiley   +1 more source

ED‐Autoformer: A New Model for Precise Global TEC Forecast

Space Weather, Volume 23, Issue 6, June 2025.
Abstract Total electron content (TEC) is a key parameter for characterizing ionospheric morphology and significantly impacts the Global Navigation Satellite System. The ionosphere responds dramatically to solar and geomagnetic activity, leading to substantial TEC fluctuations and disturbances.
Jiawei Zhou, Hongtao Cai, Xu Yan, Hong‐wen Xu, Kun Hu, Chao Xiong   +5 more
wiley   +1 more source

Cosmic Rays and the Askaryan Effect Reveal Subsurface Structure and Buried Ice on the Moon

Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract We present the first full‐wavelength numerical simulations of the electric field generated by cosmic ray impacts into the Moon. Billions of cosmic rays fall onto the Moon every year. Ultra‐high energy cosmic ray impacts produce secondary particle cascades within the regolith and subsequent coherent, wide‐bandwidth, linearly‐polarized radio ...
E. S. Costello, R. R. Ghent, A. Romero‐Wolf, P. W. Gorham, P. G. Lucey, C. J. Tai Udovicic, P. Linton, A. Ludwig, K. McBride, C. Miki, E. Oberla, J. Rolla, A. Jung   +12 more
wiley   +1 more source

A Critical Distance Parameter for Random Vibration Fatigue Life Estimation of Notched Metallic Structures in the Frequency Domain

International Journal of Mechanical System Dynamics, Volume 5, Issue 1, Page 101-112, March 2025.
ABSTRACT A critical distance parameter is introduced to describe the stress gradient effect of notched metallic structures under random vibration loadings, which is the frequency domain expression of the theory of critical distance (TCD) based line method stress.
Daiyang Gao, Yuming Huang, Wenhe Liao
wiley   +1 more source

Falsifying cosmological models based on a non-linear electrodynamics

European Physical Journal C: Particles and Fields, 2018
Recently, the nonlinear electrodynamics (NED) has been gaining attention to generate primordial magnetic fields in the Universe and also to resolve singularity problems. Moreover, recent works have shown the crucial role of the NED on the inflation. This
Ali Övgün, Genly Leon, Juan Magaña, Kimet Jusufi   +3 more
doaj   +1 more source

Kombucha–Chlorella–Proteinoid Biosynthetic Classifiers of Audio Signals

Nano Select, Volume 6, Issue 2, February 2025.
Novel bioelectronic composites, which consist of kombucha, chlorella, and proteinoids, exhibit exceptional audio classification capacities. This living material analyzes electrical waveforms obtained from sound sources, identifying complex audio inputs such as the English alphabet.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source

Modeling Toroidal Currents in the Ionospheric Electrojet Regions

Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.
Abstract New basis functions, suitable for fitting magnetic field observations of the auroral and equatorial electrojets, are constructed by applying principal components analysis (PCA) to a set of rotated current loops in the ionospheric E‐layer.
P. Alken, G. D. Egbert
wiley   +1 more source