Results 81 to 90 of about 1,441 (286)
Arthritis Care &Research, EarlyView.Over the past 50 years, the science of pediatric rheumatology has grown exponentially due to an expansion in the understanding of complex rheumatic conditions and a surge in novel targeted therapeutics. Physician‐scientists in the field of pediatric rheumatology have played major roles in these advancements that have improved the care of children ...
Ekemini A. Ogbu +2 more
wiley +1 more source
Global attractivity of a higher order nonlinear difference equation with decreasing terms
Electronic Journal of Qualitative Theory of Differential EquationsIn the present paper, we further study the asymptotical behavior of the following higher order nonlinear difference equation \begin{equation*} x(n+1)= ax(n)+ bf( x(n)) + cf(x(n-k)), \qquad n=0, 1, \dots \end{equation*} where $a, b $ and $c$ are constants
Xiao Wang, Chuanxi Qian
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Advanced Engineering Materials, EarlyView.Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov +4 more
wiley +1 more source
Global attractivity of a nonautonomous logistic difference equation with delay [PDF]
, 1999 Consider the nonautonomous delay logistic difference equationΔyn=1−yn−knλwhere {pn}n≥0 is a sequence of nonnegative real numbers, {kn}n≥0 is a sequence of positive integers, n − kn is nondecreasing, limn→∞(n − kn) = ∞, and λ is a positive constant.
Zhang, Qinqin, Zhou, Zhan
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Advances in Difference Equations, 2011 A discrete semi-ratio-dependent predator-prey system with Holling type IV functional response and time delay is investigated. It is proved the general nonautonomous system is permanent and globally attractive under some appropriate conditions ...
Lu Hongying, Wang Weiguo
doaj
Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization
Advanced Engineering Materials, EarlyView.Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier +17 more
wiley +1 more source
Global Attractivity of a Rational Difference Equation [PDF]
, 2014 : In this paper, we investigate the global attractivity of positive solutions of the nonlinear difference equation xn+1 = ax3 n+ bxnx2 n−1 + cx2 nxn−1+ dx3 n−1 Ax3 n+ Bxnx2 n−1 +Cx2 nxn−1+ Dx3, n=0,1,...
Yacine Halim, Nouressadat Touafek
core
On the Difference Equation xn+1=∑j=0kajfj(xn−j)
Discrete Dynamics in Nature and Society, 2007 This paper studies the boundedness character and the global attractivity of positive solutions of the difference equation xn+1=∑j=0kajfj(xn−j),n∈ℕ0, where aj are positive numbers and fj are continuous decreasing self-maps of the interval (0,∞) for j=0,1,…
Stevo Stevic
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Global attractivity for a family of nonlinear difference equations
Applied Mathematics Letters, 2007 This note is concerned with real sequences that satisfy the recurrence relation \[ x_{n+1}=\frac{ f(x_{n-r_{1}},\dots ,x_{n-r_{k}})g(x_{n-m_{1}},\dots ,x_{n-m_{l}})+h(x_{n-p_{1}},\dots ,x_{n-p_{s}})+1}{ f(x_{n-r_{1}},\dots ,x_{n-r_{k}})+g(x_{n-m_{1}},\dots ,x_{n-m_{l}})+h(x_{n-p_{1}},\dots ,x_{n-p_{s}}) }, \tag{1} \] for \(n=0,1,\dots ,\) where \(R_{+}=
Taixiang Sun, Hongjian Xi
openaire +2 more sources
Advanced Engineering Materials, EarlyView.The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee +7 more
wiley +1 more source