Results 31 to 40 of about 648,510 (309)

Effect of Boundary Conditions on the Mechanical Behavior of the Geogrid–Soil Interface

open access: yesApplied Sciences, 2021
Geogrid-reinforced structures are extensively adopted in various engineering fields. At present, the influence of boundary conditions was not considered in design methods, bringing hidden dangers to the safety of the structure.
Zheng Zuo   +4 more
doaj   +1 more source

Optimized absorbing boundary conditions for the analysis of planar circuits using the finite difference time domain method [PDF]

open access: yes, 1993
It is shown that the description of absorbing boundary condition algorithms (ABCs) in terms of single incident plane waves does not provide sufficient information for choosing the best ABC for planar waveguide termination.
Paul, DL   +3 more
core   +1 more source

Supersymmetry from boundary conditions [PDF]

open access: yesNuclear Physics B, 2005
We study breaking and restoration of supersymmetry in five-dimensional theories by determining the mass spectrum of fermions from their equations of motion. Boundary conditions can be obtained from either the action principle by extremizing an appropriate boundary action (interval approach) or by assigning parities to the fields (orbifold approach). In
G. VON GERSDORFF   +4 more
openaire   +3 more sources

Boundary conditions for fractional diffusion [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2018
This paper derives physically meaningful boundary conditions for fractional diffusion equations, using a mass balance approach. Numerical solutions are presented, and theoretical properties are reviewed, including well-posedness and steady state solutions.
Boris Baeumer   +3 more
openaire   +2 more sources

The Third Mixed Boundary-Value Problem for Strongly Elliptic Differential-Difference Equations in a Bounded Domain

open access: yesСовременная математика: Фундаментальные направления
We consider strongly elliptic differential-difference equations with mixed boundary conditions in a bounded domain. There are homogeneous Dirichlet conditions on a part of the boundary, and boundary conditions of the third kind on the other part of the ...
V. V. Akhlynina
doaj   +1 more source

New boundary conditions for AdS2

open access: yesJournal of High Energy Physics, 2020
We describe new boundary conditions for AdS2 in Jackiw-Teitelboim gravity. The asymptotic symmetry group is enhanced to Diff(S 1) ⋉ C ∞(S 1) whose breaking to SL(2, ℝ) × U(1) controls the near-AdS2 dynamics. The action reduces to a boundary term which is
Victor Godet, Charles Marteau
doaj   +1 more source

On a fractional q-differential inclusion on a time scale via endpoints and numerical calculations

open access: yesAdvances in Difference Equations, 2020
By using an endpoint result for set-valued maps, we study the existence of solutions for a fractional q-differential inclusion with sum and integral boundary value conditions on the time scale T t 0 = { t 0 q , t 0 q 2 , … } ∪ { 0 } $\mathbb{T}_{t_{0}}= \
Mohammad Esmael Samei, Shahram Rezapour
doaj   +1 more source

Boundary conditions in supergravity on a manifold with boundary [PDF]

open access: yesJournal of High Energy Physics, 2006
We explain why it is necessary to use boundary conditions in the proof of supersymmetry of a supergravity action on a manifold with boundary. Working in both boundary (``downstairs'') and orbifold (``upstairs'') pictures, we present a bulk-plus-boundary/brane action for the five-dimensional (on-shell) supergravity which is supersymmetric with the use ...
openaire   +4 more sources

Scale transition and enforcement of RVE boundary conditions in second-order computational homogenization [PDF]

open access: yes, 2008
Formulation of the scale transition equations coupling the microscopic and macroscopic variables in the second-order computational homogenization of heterogeneous materials and the enforcement of generalized boundary conditions for the representative ...
Bicanic, Nenad   +2 more
core   +1 more source

Perturbations of periodic boundary conditions [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 1982
We consider perturbations of the problem (*) \(-x''+bx=\lambda ax,x(0)- x(1)=0, x'(0)-x'(1)=0\) both by changes of the boundary conditions and by addition of nonlinear terms. We assume that at \(\lambda =\lambda_ 0\) there are two linearly independent solutions of (*) and that a is bounded away from zero. When only the boundary conditions are perturbed
openaire   +4 more sources

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