Results 11 to 20 of about 7,930,128 (288)

Study of soliton solutions of higher-order nonlinear Schrödinger dynamical model with derivative non-Kerr nonlinear terms and modulation instability analysis

open access: yesResults in Physics, 2019
In this work, soliton solutions of higher order non-linear Schrödinger equation (NLSE) with derivative non-Kerr non-linear terms are constructed by employing two analytical techniques, namely, exp(-Φ(ζ))-expansion and improved simple equation methods ...
Muhammad Arshad   +2 more
doaj   +3 more sources

Primary Students’ Math Literacy in terms of Higher Order Thinking Skill

open access: yesMimbar Ilmu, 2022
Primary students' math literacy is still inadequate. This is due to the limited number of problems based on math literacy, while studies analyzing math literacy require high-order thinking skills (HOTS).
Bagus Ali Rachman, Mohammad Faizal Amir
doaj   +1 more source

Bouncing cosmology in modified gravity with higher-order curvature terms

open access: yesJournal of High Energy Physics, 2023
A bouncing scenario of a flat homogeneous and isotropic universe is explored by using the reconstruction technique for the power-law parametrization of the Hubble parameter in a modified gravity theory with higher-order curvature and trace of the energy ...
J. K. Singh   +3 more
doaj   +1 more source

Higher Order Expectations, Illiquidity, and Short-Term Trading [PDF]

open access: yesSSRN Electronic Journal, 2011
When trading frequencies between liquidity traders and short term, heterogeneously informed investors differ, asset prices reflect Higher Order Expectations (HOEs) about both fundamentals and liquidity trading, and multiple, self-fulfilling equilibria arise.
Xavier Vives, Giovanni Cespa
openaire   +4 more sources

Gradient estimates and the fundamental solution for higher-order elliptic systems with lower-order terms

open access: yesAdvanced Nonlinear Studies, 2023
We establish the Caccioppoli inequality, a reverse Hölder inequality in the spirit of the classic estimate of Meyers, and construct the fundamental solution for linear elliptic differential equations of order 2m2m with certain lower order terms.
Barton Ariel E., Duffy Michael J.
doaj   +1 more source

Instabilities in metric-affine theories of gravity with higher order curvature terms

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We discuss the presence of ghostly instabilities for metric-affine theories constructed with higher order curvature terms. We mainly focus on theories containing only the Ricci tensor and show the crucial role played by the projective symmetry.
Jose Beltrán Jiménez, Adrià Delhom
doaj   +1 more source

Williams Expansion Terms and their Importance for Accurate Stress Field Description in Specimens with a Crack [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2013
The paper deals with an analysis of the stress and displacement fields in various cracked specimens (loaded in mode I as well as in mode II). The main goal is to determine an accurate approximation of the near-crack-tip fields which can be subsequently
Lucie MALÍKOVÁ, Václav VESELÝ
doaj   +1 more source

Higher-Order Nabla Difference Equations of Arbitrary Order with Forcing, Positive and Negative Terms: Non-Oscillatory Solutions

open access: yesAxioms, 2023
This work provides new adequate conditions for difference equations with forcing, positive and negative terms to have non-oscillatory solutions. A few mathematical inequalities and the properties of discrete fractional calculus serve as the fundamental ...
Jehad Alzabut   +4 more
doaj   +1 more source

Review of the Influence of non-singular higher order terms on the stress field of thin welded lap joints and small inclined cracks in plates [PDF]

open access: yesFracture and Structural Integrity, 2017
In stress analysis of cracked plates, alongside the stress intensity factor which quantifies the singular stress component perpendicular to the crack plane, the role played in crack growth by the constant term parallel to the crack plane, called the T ...
F. Berto   +3 more
doaj   +3 more sources

About Boundary Terms in Higher Order Theories [PDF]

open access: yes, 2011
It is shown that when in a higher order variational principle one fixes fields at the boundary leaving the field derivatives unconstrained, then the variational principle (in particular the solution space) is not invariant with respect to the addition of boundary terms to the action, as it happens instead when the correct procedure is applied. Examples
FATIBENE, Lorenzo   +2 more
openaire   +3 more sources

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