Results 11 to 20 of about 2,942,869 (296)

Delay-dependent exponential stability of neutral stochastic delay systems [PDF]

open access: yes, 2009
This paper studies stability of neutral stochastic delay systems by linear matrix inequality (LMI) approach. Delay dependent criterion for exponential stability is presented and numerical examples are conducted to verify the effectiveness of the proposed
Mao, X., Huang, L.
core   +4 more sources

Neutral Operator and Neutral Differential Equation [PDF]

open access: yesAbstract and Applied Analysis, 2011
In this paper, we discuss the properties of the neutral operator (Ax)(t) = x(t) − cx(t − δ(t)), and by applying coincidence degree theory and fixed point index theory, we obtain sufficient conditions for the existence, multiplicity, and nonexistence of (positive) periodic solutions to two kinds of second‐order differential equations with the prescribed
Jingli Ren, Zhibo Cheng, Stefan Siegmund
openaire   +3 more sources

Numerical solutions of neutral stochastic functional differential equations [PDF]

open access: yes, 2008
This paper examines the numerical solutions of neutral stochastic functional differential equations (NSFDEs) $d[x(t)-u(x_t)]=f(x_t)dt+g(x_t)dw(t)$, $t\geq 0$.
Wu, Fuke   +2 more
core   +4 more sources

The Role of Causal Processes in the Neutral and Nearly Neutral Theories [PDF]

open access: yes, 2007
In this paper, we will consider how the neutral and nearly neutral theories of molecular evolution differ from each other as a means for addressing causal processes associated with random drift and natural selection.
Michael R. Dietrich   +6 more
core   +1 more source

Mesoscale observations of Joule heating near an auroral arc and ion-neutral collision frequency in the polar cap E region [PDF]

open access: yes, 2011
We report on the first mesoscale combined ionospheric and thermospheric observations, partly in the vicinity of an auroral arc, from Svalbard in the polar cap on 2 February 2010. The EISCAT Svalbard radar employed a novel scanning mode in order to obtain
Wild, J.A.   +10 more
core   +6 more sources

New Oscillation Results For Third-Order Half-Linear Neutral Differential Equations

open access: yesMathematics, 2020
The main purpose of this paper is to obtain criteria for the oscillation of all solutions of a third-order half-linear neutral differential equation.
K. S. Vidhyaa   +2 more
doaj   +1 more source

Production and Optimization of Xylanase and α-Amylase from Non-Saccharomyces Yeasts (Pichia membranifaciens)

open access: yesJournal of Pure and Applied Microbiology, 2021
The xylanolytic and amylolytic yeasts were qualitatively determined by Cong red xylan agar and soluble starch agar plates, respectively. The most xylanase and α-amylase inducible strain (AUN-02) was selected and identified using PCR amplification of 26S ...
Hala A. Salah   +8 more
doaj   +1 more source

Second-Order Neutral Differential Equations with Distributed Deviating Arguments: Oscillatory Behavior

open access: yesMathematics, 2023
In this paper, new criteria for a class oscillation of second-order delay differential equations with distributed deviating arguments were established. Our method mainly depends on making sharper estimates for the non-oscillatory solutions of the studied
Asma Al-Jaser   +3 more
doaj   +1 more source

Development of Neutral and Nearly Neutral Theories [PDF]

open access: yesTheoretical Population Biology, 1996
A short history of the major features of neutral theories of molecular evolution is presented. Emphasis is placed on the nearly neutral theory, as this version of the neutral theory has explained the widest range of phenomena. The shift of interest from protein to DNA evolution is chronicled, leading to the modern view that silent and replacement ...
Ohta, Tomoko, Gillespie, John H.
openaire   +2 more sources

ЗАСТОСУВАННЯ ЗАХИСНОГО ПРИСТРОЮ В НЕЙТРАЛІ ВИСОКОВОЛЬТНОЇ ОБМОТКИ АВТОТРАНСФОРМАТОРА З МЕТОЮ ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ ОБМЕЖЕННЯ ОДНОФАЗНОГО СТРУМУ КОРОТКОГО ЗАМИКАННЯ

open access: yesElektrotehnìka ta Elektroenergetika, 2011
Проведено аналіз існуючих пристроїв обмеження однофазних струмів короткого замикання. Розглянуто розроблений пристрій обмеження однофазного струму короткого замикання в нейтралі високовольтної обмотки автотрансформатора.
N. V. Vyshnevsky, A.N. Andriyenko
doaj   +1 more source

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