Results 31 to 40 of about 6,679 (236)

Global Attractivity of a Higher-Order Difference Equation

open access: yesDiscrete Dynamics in Nature and Society, 2012
The aim of this work is to investigate the global stability, periodic nature, oscillation, and the boundedness of all admissible solutions of the difference equation xn+1=Axn-2r-1/(B-C∏i=lkxn-2i), n=0,1,2,… where A,B,C are positive real numbers and l,r,k
R. Abo-Zeid
doaj   +1 more source

Adaptive Mechanisms in an Airline Ticket Demand Forecasting System [PDF]

open access: yes, 2003
Adaptivity is a very important feature for industrial forecast systems. In the airline industry, a reliable forecasting of a demand for tickets at different fare levels forms a crucial step in a global optimization process, the objective of which is to
Gabrys, Bogdan, Riedel, Silvia
core  

Reduction of Order, Periodicity and Boundedness in Nonlinear, Higher Order Difference Equations

open access: yes, 2012
We consider the semiconjugate factorization and reduction of order for non-autonomous, nonlinear, higher order difference equations containing linear arguments. These equations have appeared in several mathematical models in biology and economics.
Sedaghat, H.
core   +1 more source

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

open access: yesMolecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak   +4 more
wiley   +1 more source

Dynamic of a nonautonomous two-species impulsive competitive system with infinite delays

open access: yesOpen Mathematics, 2019
In this paper, we consider a nonautonomous two-species impulsive competitive system with infinite delays. By the impulsive comparison theorem and some mathematical analysis, we investigate the permanence, extinction and global attractivity of the system,
He Mengxin, Li Zhong, Chen Fengde
doaj   +1 more source

A criterion for the global attractivity of scalar population models with delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2004
We establish sufficient conditions for the global attractivity of the positive equilibrium for some scalar delayed population models. As an illustration of the criterion established, a model generalizing the well-known food-limited population model with ...
Teresa Faria
doaj   +1 more source

Piecewise smooth systems near a co-dimension 2 discontinuity manifold: can one say what should happen?

open access: yes, 2015
We consider a piecewise smooth system in the neighborhood of a co-dimension 2 discontinuity manifold $\Sigma$. Within the class of Filippov solutions, if $\Sigma$ is attractive, one should expect solution trajectories to slide on $\Sigma$.
A. Dontchev   +25 more
core   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

open access: yesMolecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee   +8 more
wiley   +1 more source

Yorke and Wright 3/2-stability theorems from a unified point of view [PDF]

open access: yes, 2003
We consider a family of scalar delay differential equations $x'(t)=f(t,x_t)$, with a nonlinearity $f$ satisfying a negative feedback condition combined with a boundedness condition.
Aplicada Ii   +4 more
core   +1 more source

On the existence and exponential attractivity of a unique positive almost periodic solution to an impulsive hematopoiesis model with delays

open access: yes, 2015
In this paper, a generalized model of hematopoiesis with delays and impulses is considered. By employing the contraction mapping principle and a novel type of impulsive delay inequality, we prove the existence of a unique positive almost periodic ...
Anh, Trinh Tuan   +2 more
core   +1 more source

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