Results 51 to 60 of about 96,126 (203)

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama   +2 more
wiley   +1 more source

Wavelet solutions of the Klein-Gordon equation

open access: yesJournal of Mahani Mathematical Research, 2012
Summary: The numerical solutions of the Klein-Gordon equations using Legendre wavelets are investigated. The interest is in solving the problem using the wavelet basis due to its simplicity and efficiency in numerical approximations. The approach of creating Legendre wavelets and their main properties were briefly mentioned. Also, the numerical results
Hesameddini, Esmail, Shekarpaz, S.
openaire   +3 more sources

Dynamical symmetries of the Klein–Gordon equation [PDF]

open access: yesJournal of Mathematical Physics, 2009
The dynamical symmetries of the two-dimensional Klein–Gordon equations with equal scalar and vector potentials (ESVPs) are studied. The dynamical symmetries are considered in the plane and the sphere, respectively. The generators of the SO(3) group corresponding to the Coulomb potential and the SU(2) group corresponding to the harmonic oscillator ...
Zhang, Fulin, Chen, Jingling
openaire   +3 more sources

Estimating Causal Effects With Observational Data: Guidelines for Agricultural and Applied Economists

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT Most research questions in agricultural and applied economics are causal in nature: they study how changes in one or more variables (such as policies, prices or weather) affect one or more other variables (e.g., income, crop yields or pollution).
Arne Henningsen   +6 more
wiley   +1 more source

Tropical cyclone rapid intensification and the excitation of inertia-gravity waves on the edges of an evolving potential vorticity structure

open access: yesFrontiers in Earth Science, 2022
The problem of tropical cyclone rapid intensification is reduced to a potential vorticity (PV) equation and a second order, inhomogeneous, partial differential equation for the azimuthal wind.
Wayne H. Schubert, Richard K. Taft
doaj   +1 more source

On the Real Analyticity of the Scattering Operator for the Hartree Equation

open access: yes, 2008
In this paper, we study the real analyticity of the scattering operator for the Hartree equation $ i\partial_tu=-\Delta u+u(V*|u|^2)$. To this end, we exploit interior and exterior cut-off in time and space, and combining with the compactness argument to
Miao, Changxing   +2 more
core   +1 more source

Institutional Distance and the Lived Experience of Actors in the Contemporary MNC: The Role of Positionality

open access: yesHuman Resource Management Journal, EarlyView.
ABSTRACT International human resource management (IHRM) and its larger sibling of international business (IB) have cross‐fertilized each other for many years. In this paper, we suggest that IHRM research's nuanced appreciation for new patterns of work, such as the increase in internationally integrated work processes and the emergence of global virtual
Johann Fortwengel   +4 more
wiley   +1 more source

Analysis of Exact Solutions of a Mathematical Model by New Function Method

open access: yesCumhuriyet Science Journal, 2022
In this article, the new function method is used to obtain the wave solutions of the nonlinear Klein-Gordon equation. Since the Klein-Gordon equation is a nonlinear partial differential equation containing exponential functions, it was decided to apply ...
Yusuf Pandır   +2 more
doaj   +1 more source

Cubic root of Klein-Gordon equation [PDF]

open access: yesPhysics Letters B, 2000
12 pages, typos corrected. To appear in Phys.
Plyushchay, Mikhail S.   +1 more
openaire   +2 more sources

Women in business: Gender and commercial space in nineteenth‐century Glasgow

open access: yesThe Economic History Review, EarlyView.
Abstract Focusing on women entrepreneurs in a large British city, we examine how women's commercially listed businesses populated that city. Using commercial property rental records, our study allows us to understand sectoral variation and the distribution of businesses across the city and to assess both the absolute and relative contribution of women ...
Graeme Acheson   +2 more
wiley   +1 more source

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