Results 101 to 110 of about 11,648 (307)

Sliding Mode Control for Markovian Switching Singular Systems with Time-Varying Delays and Nonlinear Perturbations

open access: yesDiscrete Dynamics in Nature and Society, 2013
This paper is devoted to investigating sliding mode control (SMC) for Markovian switching singular systems with time-varying delays and nonlinear perturbations.
Guowei Yang, Yonggui Kao, Wei Li
doaj   +1 more source

Existence and Stability of Periodic Solutions for Reaction-Diffusion Equations in the Two-Dimensional Case

open access: yesМоделирование и анализ информационных систем, 2016
Parabolic singularly perturbed problems have been actively studied in recent years in connection with a large number of practical applications: chemical kinetics, synergetics, astrophysics, biology, and so on. In this work a singularly perturbed periodic
N. N. Nefedov, E. I. Nikulin
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

"Probability Distribution and Option Pricing for Drawdown in a Stochastic Volatility Environment" [PDF]

open access: yes
This paper studies the probability distribution and option pricing for drawdown in a stochastic volatility environment. Their analytical approximation formulas are derived by the application of a singular perturbation method (Fouque et al. [7]).
Kyo Yamamoto   +2 more
core  

Extraordinary n‐type Tellurium‐Free Thermoelectric Performance of Y‐Doped BiSe via Synergistic Effect of Vacancies and Band Engineering

open access: yesAdvanced Functional Materials, EarlyView.
Yttrium doping in Sb‐alloyed BiSe synergistically induces Bi vacancies and flattens conduction bands, simultaneously slashing lattice thermal conductivity by 50% and boosting the power factor. The optimized n‐type Bi0.64Sb0.3Y0.06Se delivers a peak zT of 0.91 at 393 K (average zT 0.76, 300–523 K) and an 8‐pair module with 4.6% conversion efficiency ...
Wenhao Xie   +16 more
wiley   +1 more source

Singular perturbations for systems of difference equations [PDF]

open access: yes, 1990
In this paper, singular perturbations for systems of second-order linear difference equations with a small parameter are studied. The asymptotic development of the solution of two-point boundary value problems related to them and approximations of the ...
Jódar, L.   +3 more
core   +1 more source

Singular perturbations of finite rank. Point spectrum [PDF]

open access: yes, 1997
Знайдено необхідні та достатні умови виникнення додаткового точкового спектра при сингулярних збуреннях скінченного рангу.We establish necessary and sufficient conditions for the appearance of an additional point spectrum under singular perturbations of ...
Самойленко, О.В.   +1 more
core   +2 more sources

Elliptic perturbations for Hammerstein equations with singular nonlinear term

open access: yesElectronic Journal of Differential Equations, 2006
We consider a singular elliptic perturbation of a Hammerstein integral equation with singular nonlinear term at the origin. The compactness of the solutions to the perturbed problem and, hence, the existence of a positive solution for the ...
Giuseppe Maria Coclite   +1 more
doaj  

Order reduction of drug delivery models in the presence of rapid protein binding

open access: yesВестник Самарского университета: Естественнонаучная серия
Determining drug dosages when multiple drugs are administered simultaneously is an important, long-standing problem in both practical pharmacokinetics and theoretical modeling.
E. A. Tropkina
doaj   +1 more source

Impact of Disorder on Microscopic Superconducting and Normal‐State Responses in a Kagome Metal

open access: yesAdvanced Functional Materials, EarlyView.
Using depth‐resolved, field‐ and pressure‐dependent μSR$\umu{\rm SR}$ measurements, we show that disorder in Ta‐doped KV3Sb5 drives a crossover from nodal to nodeless superconductivity while strongly modifying the normal‐state magnetic response. Our results reveal that disorder affects superconductivity and magnetism in fundamentally different ways ...
J. N. Graham   +18 more
wiley   +1 more source

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