Results 81 to 90 of about 13,921 (293)

Polynomial decay of correlations in linked-twist maps [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2013
AbstractLinked-twist maps are area-preserving, piecewise diffeomorphisms, defined on a subset of the torus. They are non-uniformly hyperbolic generalizations of the well-known Arnold cat map. We show that a class of canonical examples have polynomial decay of correlations for$\alpha $-Hölder observables, of order$1/ n$.
Springham, J., Sturman, R.
openaire   +3 more sources

Graphene‐Interfaced Stretchable Sweat Patch for Multiplexed Electrochemical Monitoring of IL‐6, Glucose, and Calcium Ions

open access: yesAdvanced Materials Technologies, EarlyView.
Flexible sweat sensor patch integrating graphene‑interfaced gold microelectrodes functionalized with bio‑receptors and ion‑selective membrane, coupled with a capillary‑driven microfluidic layer and portable potentiostat electronics for multiplexed monitoring of inflammatory, metabolic, and electrolyte biomarkers in microliter sweat volumes.
Roomia Memon   +4 more
wiley   +1 more source

On associated polynomials and decay rates for birth–death processes

open access: yesJournal of Mathematical Analysis and Applications, 2003
Consider a sequence of monic polynomials \(\{P_n(x): n= 0,1,\dots\}\) satisfying the familiar recurrence relation \[ \begin{gathered} P_n(x):= (x- c_n)(P_{n-1}(x)- d_n P_{n-2}(x),\quad n> 1,\\ P_0(x):= 1,\quad P_1(x):= x- c_1,\end{gathered} \] where \(c_n\) is real and \(d_n> 0\).
openaire   +2 more sources

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Arbitrary decays for a viscoelastic equation

open access: yesBoundary Value Problems, 2011
In this paper, we consider the nonlinear viscoelastic equation ∣ u t ∣ ρ u t t - Δ u - Δ u t t + ∫ 0 t g ( t - s ) Δ u ( s ) d s + ∣ u ∣ p u = 0 , in a ...
Wu Shun-Tang
doaj  

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

open access: yesAdvanced Robotics Research, EarlyView.
Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds   +2 more
wiley   +1 more source

Energy decay in thermoelasticity type III with viscoelastic damping and delay term

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we consider a thermoelastic system of type III with a viscoelastic damping and internal delay. We use the multiplier method to prove, under suitable assumptions, general energy decay results from which the exponential and polynomial ...
Tijani A. Apalara   +2 more
doaj  

Improved polynomial decay for unbounded semigroups

open access: yesJournal of Evolution Equations
accepted for publication in Journal of Evolution ...
Chenxi Deng, Jan Rozendaal, Mark Veraar
openaire   +3 more sources

A State‐Adaptive Koopman Control Framework for Real‐Time Deformable Tool Manipulation in Robotic Environmental Swabbing

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a state‐adaptive Koopman linear quadratic regulator framework for real‐time manipulation of a deformable swab tool in robotic environmental sampling. By combining Koopman linearization, tactile sensing, and centroid‐based force regulation, the system maintains stable contact forces and high coverage across flat and inclined surfaces.
Siavash Mahmoudi   +2 more
wiley   +1 more source

Characterization of polynomial decay rate for the solution of linear evolution equation

open access: yes, 2004
In this paper, we study the decay rate of solutions to strongly stable, but not exponentially stable linear evolution equations. It is known that the resolvent operator of such an equation must be unbounded on the imaginary axis.
Liu, Z   +3 more
core   +1 more source

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