Results 1 to 10 of about 13,468,968 (349)

An Overview of Self-Consistent Field Calculations Within Finite Basis Sets [PDF]

open access: yesMolecules, 2020
A uniform derivation of the self-consistent field equations in a finite basis set is presented. Both restricted and unrestricted Hartree−Fock (HF) theory as well as various density functional approximations are considered. The unitary invariance of
Susi Lehtola   +2 more
doaj   +4 more sources

Critical Examination of Distance-Gain-Size (DGS) Diagrams of Ultrasonic NDE with Sound Field Calculations [PDF]

open access: yesSensors, 2023
Ultrasonic non-destructive evaluation, which has been used widely, can detect and size critical flaws in structures. Advances in sound field calculations can further improve its effectiveness.
Kanji Ono, Hang Su
doaj   +2 more sources

Mean field and beyond mean field calculations of hypernuclei for study of electroproduction [PDF]

open access: yesEPJ Web of Conferences, 2022
We present two methods, the Nucleon-Lambda Tamm Dancoff Approximation (NΛ TDA) and the Equation of Motion Phonon Method (EMPM) suitable for calculating hypernuclear energy spectra and structure.
Veselý P.   +8 more
doaj   +1 more source

Near-Field Single-Scattering Calculations of Aerosols: Sensitivity Studies

open access: yesOptics, 2023
We model the effects of the photosensitive parameters of aerosols on their optical properties to provide a solid framework for further experimental and theoretical studies.
Nkongho Ayuketang Arreyndip   +2 more
doaj   +1 more source

Analysis of the impact of changes in the stator magnetic circuit on static properties of the electromagnetic linear motor model [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2018
In this paper, the static characteristics as a function of changes in geometric dimensions of the stator magnetic circuit of the linear stepper actuator with permanent magnets is presented.
Krzysztof Just, Paweł Piskur
doaj   +1 more source

Skyline Tensile Forces in Cable Logging: Field Observations vs. Software Calculations

open access: yesCroatian Journal of Forest Engineering, 2021
Skyline tensile forces have been shown to frequently exceed the recommended safety limits during ordinary cable logging operations. Several models for skyline engineering analyses have been proposed.
Omar Mologni   +5 more
doaj   +1 more source

Field emission: calculations supporting a new methodology of comparing theory with experiment

open access: yesRoyal Society Open Science, 2022
This paper provides a demonstration-of-concept of a new methodology for comparing field electron emission (FE) theory and experiment. It uses the parameter κ in the mathematical equation Im = CVmκ exp[–B/Vm] (where B and C are weakly varying or constants)
Sergey V. Filippov   +3 more
doaj   +1 more source

TGF: A New MATLAB-Based Software for Terrain-Related Gravity Field Calculations

open access: yesRemote Sensing, 2020
With knowledge of geometry and density-distribution of topography, the residual terrain modelling (RTM) technique has been broadly applied in geodesy and geophysics for the determination of the high-frequency gravity field signals.
Meng Yang, Christian Hirt, Roland Pail
doaj   +1 more source

Effective field theory calculations in open charm and charmonium production in media [PDF]

open access: yesEPJ Web of Conferences, 2019
Heavy quarkonium related observables are very useful to obtain information about the medium created in relativistic heavy ion collisions. The interaction of charmonium or bottomonium with the hot QCD medium created in these collisions can be efficiently ...
Escobedo Espinosa Miguel Ángel
doaj   +1 more source

Higher-order sensitivity analysis of periodic 3-D eigenvalue problems for electromagnetic field calculations [PDF]

open access: yesAdvances in Radio Science, 2017
An algorithm to perform a higher-order sensitivity analysis for electromagnetic eigenvalue problems is presented. By computing the eigenvalue and eigenvector derivatives, the Brillouin Diagram for periodic structures can be calculated.
P. Jorkowski, R. Schuhmann
doaj   +1 more source

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