Results 101 to 110 of about 8,371,508 (357)
Periodic solutions in a linear delay difference system
Electronic Journal of Qualitative Theory of Differential EquationsThe paper investigates periodicity properties of a linear autonomous difference system with two delayed terms. Assuming that the system matrices are simultaneously triangularizable, we formulate necessary and sufficient conditions guaranteeing the ...
Jan Čermák +2 more
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Dynamic Analysis of a Phytoplankton-Fish Model with Biological and Artificial Control
Discrete Dynamics in Nature and Society, 2014 We investigate a nonlinear model of the interaction between phytoplankton and fish, which uses a pair of semicontinuous systems with biological and artificial control. First, the existence of an order-1 periodic solution to the system is analyzed using a
Yapei Wang +3 more
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On some possible extensions of Massera's theorem
Electronic Journal of Qualitative Theory of Differential Equations, 2000 In this paper we consider ordinary and functional differential equations with $T$-periodic right hand side and look at some conjectures on proving the existence of a periodic solution.
Géza Makay
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Existence and Exponential Stability of Periodic Solution of High‐Order Hopfield Neural Network with Delays on Time Scales [PDF]
, 2009 Yongkun Li, Lili Zhao, Ping Liu
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Periodic solutions of difference equations
Journal of Mathematical Analysis and Applications, 2003 For the difference equation \(x_{n+1}=\beta x_n- g(x_n)\) with \(\beta> 1\) and \(g(x)= \text{sign\,}x\) for \(x\neq 0\), \(g(0)= 1\), it is shown: For any \(m\in \mathbb{N}_0\) it has a \(2^m\)-periodic solution. If \(\beta^{2^m(2k+1)}- 2\beta^{2^m(2k-1)}\geq 1\) for \(k\in \mathbb{N}\) and some \(m\in\mathbb{N}\) it has a \((2k+1)2^m\)-periodic ...
Yi, Taishan, Zhou, Zhan
openaire +1 more source
, 2007 We considered a nonautonomous two dimensional predator-prey system with impulsive effect. Conditions for the permanence of the system and for the existence of a unique stable periodic solution are obtained.
W. Wang, Jianhua Shen, J. Nieto
semanticscholar +1 more source
Molecular Oncology, EarlyView.Urinary LGALS3BP is elevated in bladder cancer patients compared to healthy controls as detected by the 1959 antibody–based ELISA. The antibody shows enhanced reactivity to the high‐mannose glycosylated variant secreted by cancer cells treated with kifunensine (KIF).
Asia Pece +18 more
wiley +1 more source
Pseudo almost periodic solutions for neutral type high-order Hopfield neural networks with mixed time-varying delays and leakage delays on time scales [PDF]
, 2016 Yongkun Li +2 more
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Liquid biopsy epigenetics: establishing a molecular profile based on cell‐free DNA
Molecular Oncology, EarlyView.Cell‐free DNA (cfDNA) fragments in plasma from cancer patients carry epigenetic signatures reflecting their cells of origin. These epigenetic features include DNA methylation, nucleosome modifications, and variations in fragmentation. This review describes the biological properties of each feature and explores optimal strategies for harnessing cfDNA ...
Christoffer Trier Maansson +2 more
wiley +1 more source