Results 51 to 60 of about 5,150,802 (214)

Computational Analysis of the Vibrational Response of Lunar Regolith Made of Nonspherical Grains

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Vibration‐based systems have shown that appropriately oriented and tuned mechanical oscillations can disrupt regolith interlocking and promote flow. Building on this evidence, the present study investigates vibration‐controlled granular discharge as a potential ISRU (In Situ Resource Utilization) strategy, with the aim of supporting ...
Lewis Traquair   +4 more
wiley   +1 more source

Torus and Subharmonic Motions of a Forced Vibration System in 1 : 5 Weak Resonance

open access: yesAdvances in Mathematical Physics, 2020
The Neimark-Sacker bifurcation of a forced vibration system is considered in this paper. The series solution to the motion equation is obtained, and the Poincaré map is established.
Yong Guo
doaj   +1 more source

Absence of stationary states and non-Boltzmann distributions of fractional Brownian motion in shallow external potentials

open access: yesNew Journal of Physics, 2022
We study the diffusive motion of a particle in a subharmonic potential of the form U ( x ) = | x | ^c (0 < c < 2) driven by long-range correlated, stationary fractional Gaussian noise ξ _α ( t ) with 0 < α ⩽ 2.
Tobias Guggenberger   +2 more
doaj   +1 more source

Diagnosis of Portal Hypertension: Advancing Towards Non‐Invasive Solutions

open access: yesPortal Hypertension &Cirrhosis, EarlyView.
This review systematically summarizes a full spectrum of non‐invasive diagnostic approaches for portal hypertension (PH), including imaging modalities, elastography, serum biomarkers, composite scoring systems and endoscopic ultrasound‐guided portal pressure gradient (EUS‐PPG), and analyzes their performance across different liver disease etiologies ...
Lijia Yin, Huikuan Chu, Ling Yang
wiley   +1 more source

Climate‐Driven Mangrove Dieback and Recovery: A Case Study in Albert and Leichhardt Rivers, Australia

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Cycles of dieback and recovery drove mangrove forest dynamics at the Albert and Leichhardt Rivers (Gulf of Carpentaria, Queensland, Australia) over 36 years (1987–2023). Landward margins were the most affected by reduced tidal inundation when the alignment of low lunar declination suppressed tidal range and extreme El Niño phases lowered mean sea level.
Rogerio Victor S. Gonçalves   +4 more
wiley   +1 more source

Integrals of Subharmonic Functions

open access: yesIrish Mathematical Society Bulletin, 1989
See also Bull. Math. Soc. 19, 343-349 (1987; Zbl 0596.31003).
openaire   +2 more sources

Syrinx anatomy and vocalizations in New World vultures (Aves: Cathartidae): Implications for avian vocal evolution

open access: yesJournal of Anatomy, EarlyView.
New World vultures are the only avian clade proposed to lack a syrinx and have been described as non‐vocal. Using dissection, diceCT, and histology, we demonstrate that cathartid vultures have novel syringeal features that form a syrinx and vocal characterization reveals that they produce more complex vocalizations than previously reported.
Bradley A. Ibarra   +3 more
wiley   +1 more source

Brushless Wound Rotor Vernier Motor Using Single-Phase Additional Winding on Stator for Variable Speed Applications

open access: yesIEEE Access, 2023
This paper introduces a topology for achieving the brushless operation of a wound rotor vernier motor using a single-phase additional winding on the stator, specifically designed for variable-speed applications e.g., washing machines.
Muhammad Humza   +3 more
doaj   +1 more source

Convexity and Subharmonic Functions

open access: yesIrish Mathematical Society Bulletin, 1986
In diesem Tagungsbericht macht der Autor auf neueste Ergebnisse im Zusammenhang von Konvexität und subharmonischen Funktionen und über verallgemeinerte Mittelwerte aufmerksam. Ausführlich sind oder werden diese behandelt: vom Autor [J. Math. Anal. Appl. 108, 507-514 (1985; Zbl 0582.31005)], vom Autor und \textit{M. Klimek} [Bull. Lond. Math. Soc.
openaire   +2 more sources

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

open access: yesAdvanced Electronic Materials, Volume 12, Issue 17, 7 September 2026.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

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