Results 61 to 70 of about 260,783 (310)

Invisibility and inverse problems [PDF]

open access: yesBulletin of the American Mathematical Society, 2008
We describe recent theoretical and experimental progress on making objects invisible. Ideas for devices that would have once seemed fanciful may now be at least approximately realized physically, using a new class of artificially structured materials, metamaterials . The equations that govern
Greenleaf, Allan   +3 more
openaire   +4 more sources

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

An inverse problem for Helmholtz's equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
The refraction coefficient in Helmholtz's equation is found from the knowledge of a family of the solutions to this equation on two lines.
A. G. Ramm
doaj   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Row stochastic inverse eigenvalue problem

open access: yesJournal of Inequalities and Applications, 2011
In this paper, we give sufficient conditions or realizability criteria for the existence of a row stochastic matrix with a given spectrum Λ = {λ1, ..., λn} = Λ1 ∪ ⋯ ∪ Λm ∪ Λm+1, m > 0; where (pk ...
Chang-qing Xu, Shang-jun Yang
doaj  

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

Recent developments in the inverse Galois problem a Joint Summer Research Conference on Recent Developments in the Inverse Galois Problem, July 17 - 23, 1993, University of Washington, Seattle [PDF]

open access: yes, 1995
This book contains the refereed proceedings of the AMS-IMS-SIAM Joint Summer Research Conference on Recent Developments in the Inverse Galois Problem, held in July 1993 at the University of Washington, Seattle.
Joint Summer Research Conference on Recent Developments in the Inverse Galois Problem 1993 Seattle, Wash.   +1 more
core  

Feedback methods for inverse simulation of dynamic models for engineering systems applications [PDF]

open access: yes, 2011
Inverse simulation is a form of inverse modelling in which computer simulation methods are used to find the time histories of input variables that, for a given model, match a set of required output responses.
David J. Murray-Smith   +1 more
core   +1 more source

Stability of solutions for some inverse problems

open access: yesElectronic Journal of Differential Equations, 2012
In this article we establish three stability results for some inverse problems. More precisely we consider the following boundary value problem: $Delta u + lambda u + mu = 0$ in $Omega$, $u = 0$ on $partialOmega$, where $lambda$ and $mu$ are real ...
Robert Dalmasso
doaj  

Periodic waves in microstructured solids and inverse problems

open access: yesMathematical Modelling and Analysis, 2012
Conditions for the existence of periodic and solitary waves in 1D microstructured solid of Mindlin type are deduced. Inverse problems to determine material properties are solved.
Ivan Sertakov, Jaan Janno
doaj   +1 more source

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