Results 51 to 60 of about 12,528,126 (212)

A CONTINUOUS ADJOINT FORMULATION WITH EMPHASIS TO AERODYNAMIC-TURBOMACHINERY OPTIMIZATION [PDF]

open access: yes, 2006
This paper summarizes progress, recently made in the Lab. of Thermal Turbomachines of NTUA, on the formulation and use of the continuous adjoint methods in aerodynamic shape optimization problems.
Giannakoglou, K.C. (author)   +3 more
core   +2 more sources

Performance improvement of discrete‐time linear‐quadratic regulators applied to uncertain linear systems using the Tikhonov regularization method

open access: yesAsian Journal of Control, EarlyView.
Abstract The linear‐quadratic regulator (LQR) problem of optimal control of an uncertain discrete‐time linear system (DTLS) is revisited in this paper from the perspective of Tikhonov regularization. We show that an optimally chosen regularization parameter reduces, compared to the classical LQR, the values of a scalar error function, as well as the ...
Fernando Pazos, Amit Bhaya
wiley   +1 more source

Accidental symmetries in the 2HDMEFT

open access: yesNuclear Physics B, 2020
We construct accidentally symmetric potentials in the framework of Two Higgs Model Effective Field Theory (2HDMEFT) including higher-order operators of dimension 6 and dimension 8.
Callum Birch-Sykes   +3 more
doaj   +1 more source

Geological carbon dioxide storage in the German North Sea: Static‐to‐dynamic capacity refinement for a 10 Mt/y injection scenario

open access: yesDeep Underground Science and Engineering, EarlyView.
This study assesses whether a saline aquifer in the German North Sea can sustain industrial‐scale CO2 injection at 10 Mt/year over 30 years. A 3D reservoir model is used to compare static capacity with dynamically achievable storage. The work links site‐scale injection strategy design with basin‐scale pressure response, providing a framework for ...
Firdovsi Gasanzade, Sebastian Bauer
wiley   +1 more source

A guide to neural ordinary differential equations: Machine learning for data-driven digital engineering

open access: yesDigital Engineering
Advances in deep learning have impacted all areas of business, government and academia, and deep learning is expanding into domains that are beyond the scope of the standard Computer Science curriculum.
Joseph M. Worsham, Jugal K. Kalita
doaj   +1 more source

THE DISCRETE CLASSICAL OPTIMAL CONTROL PROBLEM of A SEMILINEAR PARABOLIC EQUATION (COCP)

open access: yesJournal of Kufa for Mathematics and Computer, 2012
In this paper, the continuous classical optimal control for systems of a semilinear parabolic partial differential equations is described with a equality and inequality state constraints.
Chryssovergh I J, Amir Ali Al-hawasy
doaj   +1 more source

Quantization of Polaritons Confined in Dielectric Structures

open access: yesLaser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani   +4 more
wiley   +1 more source

Topology optimization for thermal-fluid systems considering maximum temperature constraints

open access: yesNihon Kikai Gakkai ronbunshu
This paper presents a topology optimization method for minimizing power dissipation while constraining the maximum temperature in thermal-fluid systems.
Atsushi KOGUCHI   +3 more
doaj   +1 more source

MATHEMATICAL MODEL OF RESONATOR CHAINS IN EXTERNAL MAGNETIC FIELD [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2018
Subject of Research.The paper considers a spectral problem for chains of weakly coupled ball-shaped resonators under the action of an external magnetic field. Two basic geometries are studied composed of identical resonators: the chain with a single kink
A. S. Melikhova
doaj   +1 more source

Multifunctionality in Silicon Photonics Through Temperature‐Driven Inverse Design

open access: yesLaser &Photonics Reviews, EarlyView.
Temperature‐conditioned inverse design embeds thermo‐optic reconfigurability directly into compact silicon photonic devices. By co‐optimizing a single geometry at 300 K (T1) and 520 K (T2), the same structure supports distinct optical functions, enabling experimentally verified switching and mode conversion without resonant architectures or additional ...
Berkay Neseli   +8 more
wiley   +1 more source

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