Results 61 to 70 of about 7,979 (231)

Existence, uniqueness, and stability of periodic solutions of an equation of Duffing type

open access: yes, 2007
We consider a second-order equation of Duffing type. Bounds for the derivative of the restoring force are given which ensure the existence and uniqueness of a periodic solution.
Chen, Hongbin, Li, Yi
core   +1 more source

M. E. Grant Duff, Philosophic Liberalism and the Global Liberal Cause

open access: yesHistory, EarlyView.
Abstract Historians disagree about how best to conceptualize nineteenth‐century British Liberalism in relation to its international contexts. This article argues that we can better understand the patterns involved by interrogating individuals who bridged the worlds of partisan politics and elaborated thought.
Alex Middleton
wiley   +1 more source

Audit Quality From a Service Perspective: A Systematic Literature Review

open access: yesAccounting Perspectives, EarlyView.
ABSTRACT Audit quality is a multidimensional and latent construct that researchers struggle to evaluate and interpret. This paper follows an interdisciplinary approach by systematically reviewing the literature on audit quality evaluation from a service quality perspective.
Lise Muriel Botha   +3 more
wiley   +1 more source

EXACT SOLUTIONS TO CUBIC DUFFING EQUATION FOR A NONLINEAR ELECTRICAL CIRCUIT

open access: yesVisión Electrónica, 2014
This work provides an exact solution to a cubic Duffing oscillator equation with initial conditions and bounded periodic solutions. This solution is expressed in terms of the Jacobi elliptic function (cn).
Álvaro H. Salas S., Jairo E. Castillo H
doaj  

Lagrange Stability for Duffing-Type Equations

open access: yesJournal of Differential Equations, 2000
The boundedness of solutions (Lagrange stability) to a generalized Duffing equation of the form \[ \frac{d^2 x}{dt^2} + x^{2n+1} + \sum_{j=0}^{2n} p_j (t)x^j = 0, \quad n\geq 1, \tag{1} \] with \(p_j (t+1)= p(t) \) is considered. The conditions for the \(p_j's\) which lead to the boundedness of the solutions to (1) were investigated by many authors ...
openaire   +2 more sources

Management and sustainable development in cooperative and social economy enterprises. A literature review on SDGs implementation (2015–2023)

open access: yesAnnals of Public and Cooperative Economics, EarlyView.
Abstract The United Nations defined the Sustainable Development Goals (SDGs) in 2015. As a result, an increasing number of companies have integrated sustainable development practices into their activities with the aim of contributing to the SDGs achievement.
Joan R. Sanchis   +2 more
wiley   +1 more source

Locally Exact Integrators for the Duffing Equation

open access: yesMathematics, 2020
A numerical scheme is said to be locally exact if after linearization (around any point) it becomes exact. In this paper, we begin with a short review on exact and locally exact integrators for ordinary differential equations.
Jan L. Cieśliński, Artur Kobus
doaj   +1 more source

Psychedelics, entactogens and psychoplastogens for depression and related disorders

open access: yesBritish Journal of Pharmacology, EarlyView.
Currently, the most actively investigated rapidly acting antidepressants, anxiolytics and/or anti PTSD agents, include psychedelics e.g. psilocybin, LSD, N,N‐dimethyltryptamine, ayahuasca; non‐hallucinogenic entactogens, e.g. MDMA; psychoplastogens which rapidly promote neuroplasticity, e.g.
Daniel Hoyer
wiley   +1 more source

A Generalization of the Theory of Normal Forms

open access: yes, 1995
Normal forms allow the use of a restricted class of coordinate transformations (typically homogeneous polynomials) to put the bifurcations found in nonlinear dynamical systems into a few standard forms.
Sethna, James P.   +2 more
core   +1 more source

Coworking spaces and workplaces of the future: Critical perspectives on community, context and change

open access: yesEuropean Management Review, EarlyView.
Abstract The last decade has witnessed increased demand by employers and workers for greater flexibility, especially regarding remote and hybrid work. There has therefore been a substantial increase in academic interest in coworking, including within business and management studies. We conduct a systematic literature review of research on coworking and
Jennifer Johns   +5 more
wiley   +1 more source

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