Results 21 to 30 of about 555,299 (300)

Disentangling nonlinear geomagnetic variability during magnetic storms and quiescence by timescale dependent recurrence properties

open access: yesJournal of Space Weather and Space Climate, 2020
Understanding the complex behavior of the near-Earth electromagnetic environment is one of the main challenges of Space Weather studies. This includes both the correct characterization of the different physical mechanisms responsible for its ...
Alberti Tommaso   +4 more
doaj   +1 more source

Orientational order of liquids and glasses via fluctuation diffraction

open access: yesIUCrJ, 2017
Liquids, glasses and other amorphous matter lack long-range order, which makes them notoriously difficult to study. Local atomic order is partially revealed by measuring the distribution of pairwise atomic distances, but this measurement is insensitive ...
Andrew V. Martin
doaj   +1 more source

Lie symmetries, bifurcation analysis, and Jacobi elliptic function solutions to the nonlinear Kodama equation

open access: yesResults in Physics, 2023
The present article formally studies the propagation of optical pulses in a nonlinear medium governed by the nonlinear Kodama equation. For this purpose, the Lie symmetries group is first adopted for similarity reduction and constructing some exact ...
K. Hosseini   +5 more
doaj   +1 more source

An Introduction to Finite Temperature Quantum Chromodynamics on the Lattice [PDF]

open access: yes, 1998
In these lectures, we introduce finite temperature QCD on the lattice to non-experts of the subject. We first formulate lattice QCD both at zero and finite temperatures.
Kanaya, K.
core   +3 more sources

On the geometry of Hamiltonian vector fields [PDF]

open access: yesE3S Web of Conferences, 2023
It is known that vector fields play an important role in many areas of mathematics and technology, in particular, in the theory of dynamical systems. Hamiltonian dynamical systems are generated by Hamiltonian vector fields. The paper studies the geometry
Narmanov Abdigappar, Diyarov Bekzod
doaj   +1 more source

PIPING EXTREME DYNAMIC RESPONSE STUDIES [PDF]

open access: yesNuclear Engineering and Design, 1984
Abstract Results are presented for a series of high-amplitude dynamic tests of a simple pressurized piping system excited through various multiple piping supports. The four-inch diameter piping achieved response levels above yield when subjected to earthquake-like time history inputs and withstood — without leakage or gross distortion — dynamic ...
G.E. Howard, B.A. Johnson, W.B. Walton
openaire   +1 more source

String Breaking and Quarkonium Dissociation at Finite Temperatures [PDF]

open access: yes, 2001
Recent lattice studies of string breaking in QCD with dynamical quarks determine the in-medium temperature dependence of the heavy quark potential. Comparing this to the binding energies of different quarkonium states, we check if these can decay into ...
Bali   +19 more
core   +2 more sources

Theoretical studies for dynamical function of practical inerters

open access: yesNihon Kikai Gakkai ronbunshu, 2017
This study aims to establish the fundamental theory of function of the practical inerters. Inerter is effective component for mechanical vibration system to control vibration frequency characteristics. Many studies related to inerter had been examined in
Aki OGAWA, Kazuhiko ADACHI
doaj   +1 more source

Spiking Neuron Mathematical Models: A Compact Overview

open access: yesBioengineering, 2023
The features of the main models of spiking neurons are discussed in this review. We focus on the dynamical behaviors of five paradigmatic spiking neuron models and present recent literature studies on the topic, classifying the contributions based on the
Luigi Fortuna, Arturo Buscarino
doaj   +1 more source

(1173) Anchises - Thermophysical and Dynamical Studies of a Dynamically Unstable Jovian Trojan [PDF]

open access: yes, 2012
We have performed detailed thermophysical and dynamical modelling of Jovian Trojan (1173) Anchises. Our results reveal a most unusual object. By examining observational data taken by IRAS, Akari and WISE between 11.5 and 60 microns, along with variations
Bowell   +55 more
core   +3 more sources

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