Results 51 to 60 of about 24,678 (193)
New Drain Spacing Formulas Using the Variational Iteration Method
Irrigation and Drainage, EarlyView.ABSTRACT In this study, the drain spacing is computed using the variational iteration method (VIM) to the linearized Boussinesq equation. By applying at most two iterations of the VIM method under three different initial condition scenarios, three equations for drain spacing calculation were derived. These equations predict values of drain spacing that
George Kargas +2 more
wiley +1 more source
Exact solutions of classical scalar field equations
, 2010 We give a class of exact solutions of quartic scalar field theories. These solutions prove to be interesting as are characterized by the production of mass contributions arising from the nonlinear terms while maintaining a wave-like behavior.
Frasca M. +6 more
core +1 more source
STABILITY OF QUARTIC SET-VALUED FUNCTIONAL EQUATIONS
Journal of the Chungcheong Mathematical Society, 2015 Abstract. We will show the general solution of the functionalequationf(x + ay) + f(x ay) + 2(a 2 1)f(x)= a 2 f(x + y) + a 2 f(x y) + 2a 2 (a 2 1)f(y)and investigate the Hyers-Ulam stability of the quartic set-valuedfunctional equation. 1. IntroductionThe theory of set-valued functions in Banach spaces is connected tothe control theory and the ...
openaire +2 more sources
Inverse Design of Mirror‐Symmetric Disordered Systems for Broadband Perfect Transmission
Laser &Photonics Reviews, EarlyView.This work introduces an inverse design approach to achieve broadband perfect wave transmission in mirror‐symmetric disordered media. Leveraging symmetry simplifies optimization and enables control of multiple reflectionless states. Experiments in microwave waveguides confirm the design of exceptional points, bandpass filters, and broadband quasi ...
Zhazira Zhumabay +4 more
wiley +1 more source
Generalized Multiquartic Mappings, Stability, and Nonstability
Journal of Mathematics, 2022 In this article, a generalized form of n-quartic mappings is introduced. The structure of such mappings is studied, and in fact, it is shown that every multiquartic mapping can be described as an equation, namely, the (generalized) multiquartic ...
Abasalt Bodaghi
doaj +1 more source
Renormalization Group Study of Magnetic Catalysis in the 3d Gross-Neveu Model
, 2012 Magnetic catalysis describes the enhancement of symmetry breaking quantum fluctuations in chirally symmetric quantum field theories by the coupling of fermionic degrees of freedom to a magnetic background configuration.
Daniel D. Scherer +5 more
core +1 more source
British Journal of Mathematical and Statistical Psychology, EarlyView.Abstract Psychological concepts are increasingly understood as complex dynamic systems that change over time. To study these complex systems, researchers are increasingly gathering intensive longitudinal data (ILD), revealing non‐linear phenomena such as asymptotic growth, mean‐level switching, and regulatory oscillations.
Jan I. Failenschmid +3 more
wiley +1 more source
Abstract and Applied Analysis, 2013 We obtain the general solution of Euler-Lagrange-Rassias quartic functional equation of the following . We also prove the Hyers-Ulam-Rassias stability in various quasinormed spaces when .
Heejeong Koh, Dongseung Kang
doaj +1 more source
Heat conduction induced by non-Gaussian athermal fluctuations
, 2013 We study the properties of heat conduction induced by non-Gaussian noises from athermal environments. We find that new terms should be added to the conventional Fourier law and the fluctuation theorem for the heat current, where its average and ...
C. Gardiner +9 more
core +1 more source
A Comparative Review of Specification Tests for Diffusion Models
International Statistical Review, EarlyView.Summary Diffusion models play an essential role in modelling continuous‐time stochastic processes in the financial field. Therefore, several proposals have been developed in the last decades to test the specification of stochastic differential equations.
A. López‐Pérez +3 more
wiley +1 more source