Results 1 to 10 of about 1,055,399 (260)

Performance of a solution of the direct geodetic problem by Taylor series of Cartesian coordinates

Journal of Geodetic Science, 2021
The direct geodetic problem is regarded on the biaxial and triaxial ellipsoid. A known solution method suitable for low eccentricities, which uses differential equations in Cartesian coordinates and Taylor series expansions of these coordinates, is ...
Marx C.
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Investigation of Well-Posedness for a Direct Problem for a Nonlinear Fractional Diffusion Equation and an Inverse Problem

Fractal and Fractional
In this paper, we consider a direct problem and an inverse problem involving a nonlinear fractional diffusion equation, which can be applied to many physical situations. The equation contains a Caputo fractional derivative, a symmetric uniformly elliptic
Özge Arıbaş, İsmet Gölgeleyen, Mustafa Yıldız   +2 more
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Paradigms in HIV vaccine research

Exploration of Immunology, 2022
Although a large number of preventative human immunodeficiency virus (HIV) vaccine trials have been carried out during the last 30 years, it is remarkable that an effective HIV vaccine has not yet been developed.
Marc H.V. Van Regenmortel
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Applications of the duality theory of convex analysis to the complete electrode model of electrical impedance tomography

Selecciones Matemáticas, 2023
The duality theory of convex analysis is applied to the complete electrode model (CEM), which is a standard model in electrical impedance tomography (EIT). This results in a dual formulation of the CEM and a general error estimate.
Josué D. Díaz-Avalos
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Identification of a longitudinal notch of a rod by natural vibration frequencies

Российский технологический журнал, 2023
Objectives. To study the direct and inverse problem of vibrations of a rectangular rod having a longitudinal notch, to analyze regularities of the behavior of natural frequencies and natural forms of longitudinal vibrations when changing the location and
I. M. Utyashev, A. F. Fatkhelislamov
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Automation of the Formation of a Mathematical Formulation of Kinetics for Multistage Chemical Reactions and Numerical Solution to a Direct Problem

Advanced Engineering Research, 2023
Introduction. The basis for research, analysis and mathematical optimization of any chemical process is an adequate mathematical model that takes into account the kinetics of the object.
N. A. Lysenko, K. F. Koledina
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The method of determining the composition of hydrocarbon fuel by the ratio of fuel and air consumption and temperature of combustion products

Trudy Odesskogo Politehničeskogo Universiteta, 2019
The use of extreme regulators has a common disadvantage, which depends on the type of extreme characteristic. When approaching the extremum point, the gradient of the measured parameter with the accepted computational error decreases to zero.
Олександр Валерійович Бутенко, Володимир Едуардович Демиденко, Олександр Іванович Брунеткін   +2 more
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Computational electromagnetic analysis of partially-filled rectangular waveguide at X-band frequencies

Nonlinear Analysis, 2022
In this paper, the full-wave analysis of the direct scattering problem in the rectangular waveguide is derived. The numerical calculation results of the scattering characteristics are presented.
Ilona Zamaraite, Saulius Rudys, Saulius Lapinskas, Rimvydas Aleksiejunas, Robertas Grigalaitis, Juras Banys   +5 more
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Mathematical literacy teachers’ engagement with contextual tasks based on personal finance

Perspectives in Education, 2012
This article reports on a study carried out with a group of 108 practising Mathematical Literacy (ML) teachers who participated in an Advanced Certificate in Education (ACE) programme.
Sarah Bansilal, Thokozani Mkhwanazi, Patisizwe Mahlabela   +2 more
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Direct Method for Solving Bilinear Programming Problem

Наука и техника, 2021
The bilinear programming problem is considered, where a column, which corresponds to one of the variables, is not fixed but can be chosen from a convex set. This problem is known as the Dantzig – Wolfe problem.
L. D. Matveyeva
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