Results 41 to 50 of about 311,780 (287)

Logarithmic corrected Polynomial $f(R)$ inflation mimicking a cosmological constant

, 2016
In this paper, we consider an inflationary model of $f(R)$ gravity with polynomial form plus logarithmic term. We calculate some cosmological parameters and compare our results with the Plank 2015 data.
Kubeka, A. S., Pourhassan, B., Rostami, M., Sadeghi, J.   +3 more
core   +1 more source

Exon 7 splicing of ERα predicts poor prognosis and increases phenotypic heterogeneity in luminal a subtype breast cancer

FEBS Open Bio, EarlyView.
ERα splice variant ERα∆7 lacks the C‐terminus, and its expression may change phenotypes of breast cancers. Our results showed that ERα∆7 is found in the luminal A subtype, and elevated ERα∆7 levels are linked to improved cell survival with lower proliferation and migration.
Long Wai Tsui, Taobo Hu, Thomson Christian Husein, Wai Hei Shek, Bingrong Chen, Depeng Wang, Shu Wang, Weichuan Yu, Xiaodan Fan, Mengping Long, Toyotaka Ishibashi   +10 more
wiley   +1 more source

Polynomial asymptotic stability of damped stochastic differential equations

Electronic Journal of Qualitative Theory of Differential Equations, 2004
The paper studies the polynomial convergence of solutions of a scalar nonlinear It\^{o} stochastic differential equation\[dX(t) = -f(X(t))\,dt + \sigma(t)\,dB(t)\] where it is known, {\it a priori}, that $\lim_{t\rightarrow\infty} X(t)=0$, a.s.
John Appleby, D. Mackey
doaj   +1 more source

New Conditions of Analysis and Synthesis for Periodic Piecewise Linear Systems With Matrix Polynomial Approach

IEEE Access, 2020
In this paper, new conditions of the stability, stabilization and L2-gain performance of periodic piecewise systems are proposed. Both the continuous and discontinuous Lyapunov functions with dwell-time related time-varying Lyapunov matrix polynomial are
Panshuo Li, Mali Xing, Yun Liu, Bin Zhang   +3 more
doaj   +1 more source

Use of Symptomatic Drug Treatment for Fatigue in Multiple Sclerosis and Patterns of Work Loss

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To describe the use of central stimulants and amantadine for fatigue in MS and evaluate a potential association with reduced work loss in people with MS. Methods We conducted a nationwide, matched, register‐based cohort study in Sweden (2006 to 2023) using national registers with prospective data collection.
Simon Englund, Johan Reutfors, Thomas Frisell, Fredrik Piehl   +3 more
wiley   +1 more source

Fast Stability Analysis for Proportional-Integral Controller in Interval Systems

Journal of Advanced Engineering and Computation, 2018
The paper describes a technique for stability analysis of proportional-integral (PI) controller in linear continuous-time interval control systems. The stability conditions of Kharitonov's theorem together with related criterions, such as Routh-Hurwitz ...
Hau Huu Vo
doaj   +1 more source

Tracking Control of High Order Input Reference Using Integrals State Feedback and Coefficient Diagram Method Tuning

IEEE Access, 2020
The purpose of the research is tracking control to follow the input reference signal such as step, ramp, parabolic, and high order reference stably. The challenge is rising when high order input references, such as parabolic or polynomial, are used in ...
Alfian Ma'Arif, Adha Imam Cahyadi, Samiadji Herdjunanto, Oyas Wahyunggoro   +3 more
doaj   +1 more source

Stability Result for a Kirchhoff Beam Equation with Variable Exponent and Time Delay

Universal Journal of Mathematics and Applications, 2022
This paper is concerned with a stability result for a Kirchhoff beam equation with variable exponents and time delay. The exponential and polynomial stability decay are proved based on Komornik's inequality.
Hazal Yüksekkaya, Carlos Raposo, Erhan Pişkin, Jorge Ferreira, Mohammad Shahrouzi   +4 more
doaj   +1 more source

Symplectic Integration of Hamiltonian Systems using Polynomial Maps

, 2001
In order to perform numerical studies of long-term stability in nonlinear Hamiltonian systems, one needs a numerical integration algorithm which is symplectic. Further, this algorithm should be fast and accurate.
Berg, Channel, Channell, Cornwell, Dragt, Dragt, Dragt, Dragt, Dragt, Dragt, Forest, Forest, Gjaja, Gjaja, Goldstein, Govindan Rangarajan, Kang, Rangarajan, Rangarajan, Rangarajan, Rangarajan, Rangarajan, Rangarajan, Rangarajan, Rangarajan, Rangarajan, Ruth, Yoshida   +27 more
core   +1 more source

Baseline Regional Cholinergic Denervation Predicts Cognitive Trajectories in Moderate Parkinson Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive decline is a disabling and variable feature of Parkinson disease (PD). While cholinergic system degeneration is linked to cognitive impairments in PD, most prior research reported cross‐sectional associations. We aimed to fill this gap by investigating whether baseline regional cerebral vesicular acetylcholine transporter ...
Taylor Brown, Giulia Carli, Prabesh Kanel, Stiven Roytman, Jaimie Barr, Nicolaas I. Bohnen, Roger L. Albin   +6 more
wiley   +1 more source