Results 21 to 30 of about 60,342 (260)

Inverse Analysis for Estimating Temperature and Residual Stress Distributions in a Pipe from Outer Surface Temperature Measurement and Its Regularization

open access: yesProceedings, 2018
This paper presents an inverse analysis method for estimating the temperature and thermal residual stress distributions in the pipe from the temperature history measured on the outer surface. A regularization method was introduced.
Shiro Kubo, Shoki Taguwa
doaj   +1 more source

Unsteady heat exchange at the dry spent nuclear fuel storage

open access: yesNuclear Engineering and Technology, 2017
Unsteady thermal processes in storage containers with spent nuclear fuel were modeled. The daily fluctuations of outer ambient temperatures were taken into account.
Svitlana Alyokhina, Andrii Kostikov
doaj   +1 more source

Theoretical Study of Gamma-ray Pulsars [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2016
We use the non-stationary three dimensional two-layer outer gap model to explain gamma-ray emissions from a pulsar magnetosphere. We found out that for some pulsars like the Geminga pulsar, it was hard to explain emissions above a level of around 1 GeV.
Kwong Sang Cheng, Jumpei Takata
doaj   +1 more source

Theoretical and Experimental Heat Transfer in Solid Propellant Rocket Engine [PDF]

open access: yesJournal of Aerospace Technology and Management, 2019
Accurate determination of heat flux is an important task not only in the designing aspect but also in the performance analysis of rocket engines. In this purpose, this work deals with the heat flux determination in a combustion chamber through the ...
Izabel Cecilia Ferreira de Souza Vicentin   +7 more
doaj   +2 more sources

Formulation and Solution of an Inverse Reliability Problem to Simulate the Dynamic Behavior of COVID-19 Pandemic

open access: yesTrends in Computational and Applied Mathematics, 2021
Different types of mathematical models have been used to predict the dynamic behavior of the novel coronavirus (COVID-19). Many of them involve the formulation and solution of inverse problems. This kind of problem is generally carried out by considering
F. S. Lobato   +3 more
doaj   +1 more source

Extensions of pseudo-Perron-Frobenius splitting related to generalized inverse AT,S(2)

open access: yesSpecial Matrices, 2018
We in this paper define the outer-Perron-Frobenius splitting, which is an extension of the pseudo- Perron-Frobenius splitting defined in [A.N. Sushama, K. Premakumari, K.C.
Huang Shaowu   +3 more
doaj   +1 more source

Ultra-Compact Digital Metasurface Polarization Beam Splitter via Physics-Constrained Inverse Design

open access: yesApplied Sciences, 2022
Inverse design effectively promotes the miniaturization of integrated photonic devices through the modulation of subwavelength structures. Utilizing a theoretical prior based inverse design, we propose an ultra-compact integrated polarizing beam splitter
Hao Shi   +6 more
doaj   +1 more source

Nonlinear Control of a Single Tail Tilt Servomotor Tri-Rotor Ducted VTOL-UAV

open access: yesAerospace, 2022
This paper explores a novel single tail tilt servomotor tri-rotor ducted vertical takeoff and landing unmanned aerial vehicle system (VTOL-UAV), and proposes a compound control method combining disturbance observer, model predictive control (MPC) and ...
Yanpeng Hu   +4 more
doaj   +1 more source

A coupling method of direct and inverse heat conduction problem for transient temperature calculation of the supercharged boiler drum

open access: yesJournal of Thermal Science and Technology, 2016
The supercharged boiler drum is partly surrounded by the furnace flue gas and hot air, and it's difficult to precisely determine the temperature field from the direct method.
Enhui SUN   +3 more
doaj   +1 more source

On the Kantorovich Theory for Nonsingular and Singular Equations

open access: yesAxioms
We develop a new Kantorovich-like convergence analysis of Newton-type methods to solve nonsingular and singular nonlinear equations in Banach spaces.
Ioannis K. Argyros   +3 more
doaj   +1 more source

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