Results 31 to 40 of about 120 (104)

Quasistates in a ring coupled to a reservoir and their relation to the Dicke effect [PDF]

open access: yesPhysical Review B, 2003
We study the energy spectrum and the persistent current in an ideal one-dimensional mesoscopic ring coupled to an external fermionic reservoir. The contact between ring and reservoir is described by a tunneling operator, which causes an indirect coupling between different ring states via states in the reservoir. For strong coupling to the reservoir new
Wunsch, Bernhard, Chudnovskiy, Alexander
openaire   +3 more sources

Dual‐Mode Oscillations in SiOx‐Based Threshold Switching Devices for Unconventional Probabilistic Computing

open access: yesAdvanced Intelligent Discovery, Volume 2, Issue 3, June 2026.
To enable versatile unconventional computing, a single SiOx threshold switching device is engineered to exhibit controllable dual‐mode oscillation. By modulating the input voltage, the device selectively provides stable full oscillation for oscillatory neural networks and stochastic probabilistic oscillation for probabilistic bits and true random ...
Hyeonsik Choi   +3 more
wiley   +1 more source

Revealing Two Operation Modes of Perovskite Light‐Emitting Diodes Through Overshoot Pulses

open access: yesAdvanced Photonics Research, Volume 7, Issue 1, January 2026.
Short, high‐intensity overshoot pulses (OSPs) may be generated by perovskite light‐emitting diodes (PeLEDs) depending on electrical pump pulse parameters, offset and afterpulse voltages. OSPs reveal two PeLED operation modes: the recombination mode, favorable for the conventional EL but preventing OSPs, and the accumulation mode, enabling the formation
Rokas Gegevičius   +6 more
wiley   +1 more source

Numerical measure of strong stability and strong quasistability in the vector problem of integer linear programming [PDF]

open access: yesComputer Science Journal of Moldova, 1999
In this paper we consider a vector integer programming problem with the linear partial criteria. Numerical evaluations of two types of stability of the Pareto set have been found.
V.A. Emelichev, Y.V. Nikulin
doaj  

Spectrum of quasistable states in a strong infrared field

open access: yesPhysical Review A, 2015
The stability of highly excited hydrogen and helium atoms subject to an intense infrared laser field is studied, and similarities to the case of microwave driving are discussed.
Changchun Zhong, F. Robicheaux
openaire   +2 more sources

Method for Characterizing the Development State and Spatiotemporal Evolution of Mining‐Induced Overburden Fractures

open access: yesAdvances in Civil Engineering, Volume 2026, Issue 1, 2026.
Mining‐induced coal seam extraction causes deformation and fracturing of the overburden, leading to the development of fractures, which pose significant threats to mine safety, surface structures, and natural ecosystems. To address the challenge of quantitatively characterizing overburden fractures caused by coal seam mining, this study, taking the 12 ...
Wei Zhu   +9 more
wiley   +1 more source

Clifford representatives via the uniform algebraic rank

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 6, June 2025.
Abstract In this paper, we introduce the uniform algebraic rank of a divisor class on a finite graph. We show that it lies between Caporaso's algebraic rank and the combinatorial rank of Baker and Norine. We prove the Riemann–Roch theorem for the uniform algebraic rank, and show that both the algebraic and the uniform algebraic rank are realized on ...
Myrla Barbosa   +2 more
wiley   +1 more source

A Novel Transformer Model for Dam Deformation Prediction Based on Partial Autocorrelation Function–Driven Lag Analysis and Variational Mode Decomposition With Wavelet Thresholding

open access: yesStructural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
The deformation of concrete dams directly reflects their structural health and operational state, serving as a critical foundation for safety assessment and early risk warning. Accurately predicting dam deformation patterns is thus essential for ensuring long‐term structural safety and enabling scientific operation management.
Yuanhang Jin   +3 more
wiley   +1 more source

On stability and quasi-stability of a vector lexicographic quadratic boolean programming problem

open access: yesJournal of Numerical Analysis and Approximation Theory, 2001
We consider a vector Boolean programming problem with the linear-quadratic partial criteria. Formulas of radiuses of two types of stability, necessary and sucient conditions of stability are found.
V.A. Emelichev, V. Nikulin
doaj   +2 more sources

EEG microstates show different features in focal epilepsy and psychogenic nonepileptic seizures

open access: yesEpilepsia, Volume 65, Issue 4, Page 974-983, April 2024.
Abstract Objective Electroencephalography (EEG) microstate analysis seeks to cluster the scalp's electric field into semistable topographical EEG activity maps at different time points. Our study aimed to investigate the features of EEG microstates in subjects with focal epilepsy and psychogenic nonepileptic seizures (PNES).
Domantė Kučikienė   +6 more
wiley   +1 more source

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