Results 61 to 70 of about 4,779 (264)

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +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

On a Weak Solution of the Mixed Nonlinear Schrödinger Equations

open access: yesJournal of Mathematical Analysis and Applications, 1994
We study the following Cauchy problem for the mixed nonlinear Schrödinger equation (mixed NSE): \[ U_ t=i\alpha U_{xx}+\beta U^ 2 \overline{U}_ x+\gamma| U|^ 2 U_ x+ig(| U|^ 2)U,\qquad U(x,0)=U_ 0(x), \] where \(\alpha\), \(\beta\), \(\gamma\) are real constants with \(\alpha\neq 0\), \(\overline U\) denotes the complex conjugate of \(U\), the real ...
Tan, S. B., Zhang, L. H.
openaire   +3 more sources

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

On the Complexity of Nonlinear Mixed-Integer Optimization [PDF]

open access: yes, 2011
This is a survey on the computational complexity of nonlinear mixed-integer optimization. It highlights a selection of important topics, ranging from incomputability results that arise from number theory and logic, to recently obtained fully polynomial time approximation schemes in fixed dimension, and to strongly polynomial-time algorithms for special
openaire   +3 more sources

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle   +3 more
wiley   +1 more source

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

Analysis of Plane Multi-Span Frames with the Analytical Method of Force-Displacement Combination [PDF]

open access: yesمهندسی عمران شریف
This paper investigates the effectiveness of the mixed forced-displacement method for solving indeterminate plane frames that combine force and displacement relations based on the beam’s axial and bending deformation behavior simultaneously.
Amirhosein Bahreini   +3 more
doaj   +1 more source

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