Results 31 to 40 of about 767,866 (294)

Observation of a Class of Disturbance in Time Series Expansion for Fractional Order Systems

open access: yesAbstract and Applied Analysis, 2014
This paper is concerned with the problem of designing disturbance observer for fractional order systems, of which the disturbance is in time series expansion. The stability of a special observer with the selected nonlinear weighted function and transient
Yiheng Wei   +4 more
doaj   +1 more source

Data-Driven Fault-Tolerant Tracking Control for Linear Parameter-Varying Systems

open access: yesIEEE Access, 2022
This article proposes a data-driven passive fault-tolerant tracking controller for single-input single-output (SISO) discrete-time linear systems with slowly-varying unknown parameters in the presence of actuator faults.
Zahra Karimi   +3 more
doaj   +1 more source

Spontaneous supersymmetry breaking in large-$N$ matrix models with slowly varying potential

open access: yes, 2009
We construct a class of matrix models, where supersymmetry (SUSY) is spontaneously broken at the matrix size $N$ infinite. The models are obtained by dimensional reduction of matrix-valued SUSY quantum mechanics.
Affleck   +38 more
core   +1 more source

Abstract adiabatic charge pumping [PDF]

open access: yes, 2010
This paper is devoted to the analysis of an abstract formula describing quantum adiabatic charge pumping in a general context. We consider closed systems characterized by a slowly varying time-dependent Hamiltonian depending on an external parameter ...
Brosco, V., Hekking, F., Joye, A.
core   +7 more sources

Tune in on 11.57 µHz and listen to primary production [PDF]

open access: yesBiogeosciences, 2017
In this paper we present an elegant approach to reconstruct slowly varying gross primary production (GPP) as a function of time, based on O2 time series. The approach, called complex demodulation, is based on a direct analogy with amplitude-modulated (
T. J. S. Cox   +3 more
doaj   +1 more source

Generalized hydrodynamics revisited

open access: yesPhysical Review Research, 2020
During the past decade, a number of attempts to formulate a continuum description of complex states of matter have been proposed to circumvent more cumbersome many-body and simulation methods.
James Dufty, Kai Luo, Jeffrey Wrighton
doaj   +1 more source

ROBUST DIRECT FIELD ORIENTED CONTROL OF INDUCTION GENERATOR

open access: yesТехнічна електродинаміка, 2021
A novel and robust field oriented vector control method for standalone induction generators (IG) is presented. The proposed controller exploits the concept of direct field orientation and provides asymptotic rotor flux modulus and DC-link voltage ...
С.М. Пересада   +3 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Predictability of Weather and Climate

open access: yesEarth and Space Science, 2019
The past developments in the predictability of weather and climate are discussed from the point of view of nonlinear dynamical systems. The problems ahead for long‐range predictability extending into the climate time scale are also presented.
V. Krishnamurthy
doaj   +1 more source

Exponential signaling gain at the receptor level enhances signal-to-noise ratio in bacterial chemotaxis. [PDF]

open access: yesPLoS ONE, 2014
Cellular signaling systems show astonishing precision in their response to external stimuli despite strong fluctuations in the molecular components that determine pathway activity.
Silke Neumann   +7 more
doaj   +1 more source

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