Results 31 to 40 of about 13,029,295 (332)

The Use of Kramers-Kronig Relations for Verification of Quality of Ferrite Magnetic Spectra

open access: yesElectrical, Control and Communication Engineering, 2015
The complex initial permeability (CIP) as a function of frequency is one of the main properties of ferrites. This characteristic (CIP) is measured experimentally, therefore there can be found noisy, doubtful or incomplete parts of the spectrum.
Ponomarenko Nikolajs   +2 more
doaj   +1 more source

The Place of Quasi Topological Structure in the Mathematical Theory of Categorization

open access: yesProceedings of the International Florida Artificial Intelligence Research Society Conference, 2022
This work is a theoretical one bridging two mathemat- ical models namely the Quasi Topological Structure (QTS) and Soft Sets (SST) theories. We prove that theQuasi Topological Structure (QTS) can be viewed as a complexification of Soft Sets, from the ...
Anca Pascu Pascu   +2 more
doaj   +1 more source

Divergence of high order Gaussian modes [PDF]

open access: yes, 1975
A simple expression for the beam divergence from a laser oscillating in a high order Gaussian mode can be derived from the properties of the mathematical expressions for these ...
Bridges, William B.
core   +1 more source

Mathematical simulation of catalytic paste flow in a ram extruder [PDF]

open access: yesHemijska Industrija, 2004
A mathematical model was developed for the stage of catalyst paste preparation. The mathematical model allows the calculation of solvate film thickness and volume content of the solid phase at any moment of time. Functional dependencies were found, which
Zhensa A.V.   +4 more
doaj   +1 more source

Mathematical approaches for powders and multiparticulate units processability characterization in pharmaceutical development [PDF]

open access: yesArhiv za farmaciju, 2022
An understanding of material properties and processing effects on solid dosage forms performance is required within the Quality-by-design approach to pharmaceutical development.
Vasiljević Ivana   +3 more
doaj   +1 more source

Mathematical Modeling of Thermal Processing for an Al-Si Alloy

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2023
This paper presents the realization of a mathematical model of a heat treatment process of an Al-Si alloy, with the help of which the values of some mechanical properties are preached.
Marian-Iulian NEACȘU
doaj   +1 more source

Mathematical properties of ordered amplitude graphs [PDF]

open access: yesNuclear Physics B, 1980
Abstract This paper elaborates on some mathematical aspects of the ordered hadronic amplitudes. In particular, a systematic way of constructing the ordered Hilbert space is presented and it is shown to be the most general Hilbert space consistent with unitarity of the S -matrix.
openaire   +2 more sources

Dynamical Casimir effect in a periodically changing domain: A dynamical systems approach [PDF]

open access: yes, 2004
We study the problem of the behavior of a quantum massless scalar field in the space between two parallel infinite perfectly conducting plates, one of them stationary, the other moving periodically.
Petrov, Nikola P.
core   +2 more sources

Pseudospectra in non-Hermitian quantum mechanics [PDF]

open access: yes, 2015
We propose giving the mathematical concept of the pseudospectrum a central role in quantum mechanics with non-Hermitian operators. We relate pseudospectral properties to quasi-Hermiticity, similarity to self-adjoint operators, and basis properties of ...
Adams R. A.   +14 more
core   +2 more sources

Weakly-entangled states are dense and robust

open access: yes, 2004
Motivated by the mathematical definition of entanglement we undertake a rigorous analysis of the separability and non-distillability properties in the neighborhood of those three-qubit mixed states which are entangled and completely bi-separable.
M. A. Nielsen   +3 more
core   +1 more source

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