Results 51 to 60 of about 53,909 (198)

Predicting DNA Motifs by Using Multi-Objective Hybrid Adaptive Biogeography-Based Optimization

open access: yesInformation, 2017
The computational discovery of DNA motifs is one of the most important problems in molecular biology and computational biology, and it has not yet been resolved in an efficient manner.
Siling Feng   +2 more
doaj   +1 more source

The role of quantum fluctuations in the optomechanical properties of a Bose-Einstein condensate in a ring cavity

open access: yes, 2011
We analyze a detailed model of a Bose-Einstein condensate trapped in a ring optical resonator and contrast its classical and quantum properties to those of a Fabry-P{\'e}rot geometry. The inclusion of two counter-propagating light fields and three matter
B. W. Shore   +5 more
core   +1 more source

Matrices of operators and regularized cosine functions

open access: yesJournal of Mathematical Analysis and Applications, 2006
In this nice paper, the author studies matrices of abstract differential operators, which are parabolic in the sense of Shilov or correct in the sense of Petrovskij. The author proves that they generate regularized cosine functions with suitable regularizing operators under certain conditions.
openaire   +2 more sources

On Coefficient Inequalities of Starlike Functions Related to the q-Analog of Cosine Functions Defined by the Fractional q-Differential Operator

open access: yesFractal and Fractional, 2023
This article extends the study of q-versions of analytic functions by introducing and studying the association of starlike functions with trigonometric cosine functions, both defined in their q-versions. Certain coefficient inequalities like coefficient bounds, Zalcman inequalities, and both Hankel and Toeplitz determinants for the new version of ...
Yusra Taj   +5 more
openaire   +2 more sources

Stampacchia's property, self-duality and orthogonality relations

open access: yes, 2010
We show that if the conclusion of the well known Stampacchia Theorem, on variational inequalities, holds on a Banach space X, then X is isomorphic to a Hilbert space.
Yannakakis, Nikos
core   +1 more source

On the Compactness of Strongly Continuous Semigroups and Cosine Functions of Operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
In this note we relate two notions of compactness for strongly continuous semigroups of linear operators and cosine functions of linear operators. Specifically, if T denotes a strongly continuous semigroup of linear operators defined on a Banach space X, we will show that T is compact if and only if the set { ( T (
openaire   +2 more sources

Existence of solutions for an abstract second-order differential equation with nonlocal conditions

open access: yesElectronic Journal of Differential Equations, 2009
We discuss the existence of mild solutions for abstract second-order differential equation with nonlocal conditions. Also we consider some application of our results.
Eduardo Hernandez M.
doaj  

Uniform boundedness of solutions for a class of Lienard equations

open access: yesElectronic Journal of Differential Equations, 2009
In this article, we study a class of Lienard equations $$ x''(t)+f(x(t))x'(t)+g_1(x(t))+g_2(x(t-au(t))=e(t). $$ Under some suitable conditions, we ensure that all solutions of the above Lienard equations are uniformly bounded.
Guo-Rong Ye, Hui-Sheng Ding, Xi-Lang Wu
doaj  

Discrete Sizing Optimization of Steel Structures Using Modified Fireworks Algorithm [PDF]

open access: yesJournal of Soft Computing in Civil Engineering
Fireworks algorithm (FWA) is an artificial intelligence algorithm developed by emulating the burst process of fireworks. This paper applies a modified version of fireworks algorithm called MoFWA to design disparate steel trusses and planar frames.
Navid Seraji, Mehdi Babaei
doaj   +1 more source

Time evolution during and after finite-time quantum quenches in the transverse-field Ising chain

open access: yes, 2016
We study the time evolution in the transverse-field Ising chain subject to quantum quenches of finite duration, ie, a continuous change in the transverse magnetic field over a finite time.
Puskarov, Tatjana, Schuricht, Dirk
core   +1 more source

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