Results 121 to 130 of about 166,029,081 (260)

Fractional robust control of ligthly damped systems [PDF]

, 2006
The article proposes a method to design a robust controller ensuring the damping ratio of a closed-loop control. The method uses a contour para-meterized by the damping ratio in the Nichols plane and the complex non-integer (or fractional)differentiation
Janat, Yaman, Oustaloup, Alain, Pommier-Budinger, Valérie, Lanusse, Patrick   +3 more
core  

Fractional dynamical model for the generation of ECG like signals from filtered coupled Van-der Pol oscillators

, 2013
In this paper, an incommensurate fractional order (FO) model has been proposed to generate ECG like waveforms. Earlier investigation of ECG like waveform generation is based on two identical Van-der Pol (VdP) family of oscillators, which are coupled by ...
Das, Saptarshi, Maharatna, Koushik
core   +1 more source

A hybrid technique for solving fractional delay variational problems by the shifted Legendre polynomials

Partial Differential Equations in Applied Mathematics
This study presents a practical method for solving fractional order delay variational problems. The fractional derivative is given in the Caputo sense.
Hasnaa F. Mohammed, Osama H. Mohammed
doaj   +1 more source

Ionomycin suppresses cancer cell growth by disrupting mitochondrial transcription

FEBS Open Bio, EarlyView.
In this study, we identify a new function for the selective Ca2+ ionophore, ionomycin, as an inhibitor of mitochondrial transcription. Both total and nascent RNA analyses revealed that ionomycin treatment reduces the transcription of mitochondrial genes.
Lishen Wang, Mingqiang Deng, Dongmei He, Diqin Lai, Dongjun Liu, Dengyong Zhu, Zhenhua Zhang, Peng Tang, Chuanman Zhou, Menghui Yin, Xichen Bao   +10 more
wiley   +1 more source

The Legendre condition of the fractional calculus of variations

Fractional operators play an important role in modelling nonlocal phenomena and problems involving coarse-grained and fractal spaces. The fractional calculus of variations with functionals depending on derivatives and/or integrals of noninteger order is ...
Torres, D. F. M., Lazo, M. J.
core   +1 more source

An application of fractional calculus to dielectric relaxation processes

, 2012
Recently fractional calculus has been successfully applied in the description of complex dynamics and proved to be a valuable tool for the solution of non-linear differential equations.
Çavuş M., Bozdemir S.
core   +1 more source

A fractional-order viscoelastoplastic creep constitutive model for intensely altered rock accounting for moisture content

Frontiers in Earth Science
Moisture content significantly impacts the time-dependent deformation and long-term stability of intensely altered rocks. To investigate their complex creep behavior, a fractional-order viscoelastoplastic constitutive model was developed using fractional
Shaobo Qiao, Shaobo Qiao, Jian Li, Ruiqiang Niu, Tao Zhang, Huaichang Yu, Zhilei He, Qinhong Wang, Kaifang Zheng   +8 more
doaj   +1 more source

KDAC6 alters cell morphology and motility through positive and negative modulation of F‐actin distribution

FEBS Open Bio, EarlyView.
KDAC6 has been associated with cell motility and actin structures, but specific domain contributions are not established. The two catalytic domains have differential effects on motility and F‐actin regulation, affecting cortical F‐actin density, motility, stress fibers, and cell spreading.
Taylor V. Joseph, Andrea B. Pham, Kiara E. Bornes, Razan H. Hammad, Chelsea A. Rousseve‐Ross, Thomas M. Huckaba, Terry J. Watt, Tasha B. Toro   +7 more
wiley   +1 more source

On the oscillation of fractional differential equations

, 2012
In this paper we initiate the oscillation theory for fractional differential equations. Oscillation criteria are obtained for a class of nonlinear fractional differential equations of the form Dqax+f1(t,x)=v(t)+f2(t,x),limt→aJ1−qax(t)=b1 , where D a q ...
Grace, Said R., Zafer, Ağacık, Agarwal, Ravi P., Wong, Patricia Jia Yiing   +3 more
core   +1 more source

A discrete time method to the first variation of fractional order variational functionals

Open Physics, 2013
Pooseh Shakoor, Almeida Ricardo, Torres Delfim   +2 more
doaj   +1 more source