Results 21 to 30 of about 30,848 (265)

Oscillation of delay dynamic equations with oscillating coefficients [PDF]

open access: yesDifferential Equations & Applications, 2013
In this paper, we study the following delay dynamic equation x Δ (t)+p(t)x(τ(t)) = 0f ort ∈ (t0,∞)T, where t0 ∈ T ,s upT = ∞, p ∈ Crd((t0,∞)T,R) alternates in sign infinitely many times and τ ∈ Crd((t0,∞)T,T) is a strictly increasing unbounded function satisfying τ(t) t for all t ∈ (t0,∞)T. Our results extend recent results for arbitrary time scales.
Karpuz, Basak, Ocalan, Ozkan
openaire   +3 more sources

Analytical insights into three models: Exact solutions and nonlinear vibrations

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
Three models are investigated in this paper, including the generalized nonlinear Schrödinger equation with distributed coefficients, the time-dependent-coefficient nonlinear Whitham – Broer – Kaup system and the fractional nonlinear vibration governing ...
Bo Xu, Lijie Zhang, Sheng Zhang
doaj   +1 more source

Application of the Non-Equilibrium Statistical Operator Method to the Dynamical Conductivity of Metallic and Classical Plasmas

open access: yesParticles, 2019
The fruitfulness of the method of a non-equilibrium statistical operator (NSO) and generalized linear response theory is demonstrated calculating the permittivity, dynamical conductivity, absorption coefficient, and dynamical collision frequency of ...
Mikhail Veysman   +2 more
doaj   +1 more source

Dynamic decay and superadiabatic forces in the van Hove dynamics of bulk hard sphere fluids

open access: yesSciPost Physics, 2022
We study the dynamical decay of the van Hove function of Brownian hard spheres using event-driven Brownian dynamics simulations and dynamic test particle theory.
Lucas L. Treffenstädt, Thomas Schindler, Matthias Schmidt
doaj   +1 more source

Modified and unmodified Graphite/unsaturated polyester resin composites: thermal and mechanical behavior [PDF]

open access: yesIranian Journal of Chemical Engineering, 2020
In this study, unmodified graphite and graphite modified with a silane agent were used to ameliorate the thermal conductivity coefficient and dynamical properties of unsaturated polyester resin.
N. Yavari, M. Poorabdollah, L. Rajabi
doaj   +1 more source

Transport coefficients from in medium quarkonium dynamics [PDF]

open access: yesProceedings of 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions — PoS(HardProbes2020), 2019
8 pages, 3 figures, journal ...
Brambilla, Nora   +4 more
openaire   +5 more sources

A dynamic model for the Lagrangian stochastic dispersion coefficient [PDF]

open access: yesPhysics of Fluids, 2013
A stochastic sub-grid model is often used to accurately represent particle dispersion in turbulent flows using large eddy simulations. Models of this type have a free parameter, the dispersion coefficient, which is not universal and is strongly grid-dependent.
Pesmazoglou, I   +2 more
openaire   +2 more sources

Obtaining the Dynamic Coefficients of Structuredness for Assessing a Domain

open access: yesInternational Journal of Cognitive Informatics and Natural Intelligence, 2022
Today, effective management of information requires an in-depth study of its internal organization. The structural organization of information affects the efficiency of choosing a method for solving the problem and the qualitative presentation of information about the subject area.
Olga Popova   +3 more
openaire   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono   +7 more
wiley   +1 more source

Beyond compactness

open access: yesAstronomy & Astrophysics
Context. Ultra-compact massive galaxies (UCMGs) often exhibit elevated stellar-to-dynamical mass ratios when dynamical masses are estimated using standard virial prescriptions. This discrepancy has been interpreted as evidence for structural non-homology
Spiniello Chiara
doaj   +1 more source

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