Results 41 to 50 of about 4,746 (164)

Nonlinear Diffusion Model for Rayleigh-Taylor Mixing [PDF]

open access: yesPhysical Review Letters, 2010
4 pages, 4 figure, PRL in ...
Boffetta, G.   +2 more
openaire   +3 more sources

Mixed Nonlinear Response and Transition of Nonlinearity in a Piezoelectric Membrane

open access: yesACS Applied Electronic Materials
Nonlinearities play a critical role in the dynamics of mechanical resonators, enhancing sensitivity and enabling signal manipulation. Understanding the parameters affecting nonlinearities is crucial for developing strategies to counteract their effects or manipulate them for improved device performance. This study investigates the impact of fabrication-
Nishta Arora   +4 more
openaire   +4 more sources

Procedure for Safety Assessment and BIM Modelling of an Historical Complex Structure through a Macroelement Approach: The Building “Molino-Pastificio Soresi” of Partinico (Italy)

open access: yesBuildings, 2022
The structural assessment of existing historical structures is a complex task due to the inner main difficulty in making up reliable models for structural analysis, able to include mechanical and geometrical nonlinearities, existing damage, complex ...
Giovanni Minafò   +3 more
doaj   +1 more source

A Mixed Algorithm for Nonlinear Complementarity Problems

open access: yesJournal of Computers, 2011
Combining nonmonotone trust region algorithms and PSO methods, we propose a mixed method for nonlinear complementarity problems. The iterative formula of μ k is very simple. When the determinant of  B k +λ k I is very large or small, the PSO method will obtain a new point which gets us better astringency.
Xi-yun Wang, Ya Wang, Yu-Yang Wang
openaire   +1 more source

Interval criteria for oscillation of second-order impulsive differential equation with mixed nonlinearities

open access: yesElectronic Journal of Differential Equations, 2011
We establish sufficient conditions for the oscillation of all solutions to the second-order impulsive differential equation $$displaylines{ ig(r(t)x'(t)ig)'+p(t)x'(t)+q(t)x(t)+sum_{i=1}^n q_i(t)|x(t)|^{alpha_i}hbox{sgn} x(t)=e(t),quad teq au_k,cr x({
Velu Muthulakshmi, Ethiraju Thandapani
doaj  

Why Do Oceanic Nonlinearities Contribute Only Weakly to Extreme El Niño Events?

open access: yesGeophysical Research Letters
Extreme El Niño events have outsized global impacts and control the El Niño Southern Oscillation (ENSO) warm/cold phases asymmetries. Yet, a consensus regarding the relative contributions of atmospheric and oceanic nonlinearities to their genesis remains
Fangyu Liu   +6 more
doaj   +1 more source

Multiple positive solutions for mixed fractional differential system with p-Laplacian operators

open access: yesBoundary Value Problems, 2019
This paper is focused on researching a class of mixed fractional differential system with p-Laplacian operators. Based on the properties of the corresponding Green’s function, different combinations of superlinearity or sublinearity for the ...
Ying Wang
doaj   +1 more source

Cross-validation for nonlinear mixed effects models

open access: yesJournal of Pharmacokinetics and Pharmacodynamics, 2013
Cross-validation is frequently used for model selection in a variety of applications. However, it is difficult to apply cross-validation to mixed effects models (including nonlinear mixed effects models or NLME models) due to the fact that cross-validation requires “out-of-sample” predictions of the outcome variable, which cannot be easily calculated ...
Colby, Emily, Bair, Eric
openaire   +4 more sources

Oscillatory behavior of n-th-order neutral dynamic equations with mixed nonlinearities on time scales

open access: yesElectronic Journal of Differential Equations, 2016
In this article, several new oscillation theorems for n-th-order neutral dynamic equations with mixed nonlinearities are established. Our work extends some known results in the literature on second-order, third-order, and higher-order linear and half-
Xian-Yong Huang
doaj  

New Oscillation Criteria for Second-Order Delay Differential Equations with Mixed Nonlinearities

open access: yesDiscrete Dynamics in Nature and Society, 2010
We establish new oscillation criteria for second-order delay differential equations with mixed nonlinearities of the form (p(t)x'(t))'+∑i=1npi(t)x(t-τi)+∑i=1nqi(t)|x(t-τi)|αisgn x(t-τi)=e(t),  t≥0, where p(t), pi(t), qi(t), and e(t) are continuous ...
Yuzhen Bai, Lihua Liu
doaj   +1 more source

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