Modeling of the textronic structure using the Iterative Fundamental Solutions Method

Mariusz Mączka, Stanisław Pawłowski, Jolanta Plewako — Tue, 13 Feb 2024 11:57:28 +0000

The paper describes an approach to modelling the conductance of a textronic structure based on the iterative fundamental solutions method. The analysis of the current density distribution in a thin conductive layer containing roughness resulting from the applied manufacturing technology is aimed at estimating its impact on the total current and the conductivity of the conductive path. The proposed solution makes it possible to define a structure model in three geometrical dimensions, and its numerical implementation in the form of the proposed method ensures efficiency and computational accuracy.

PROBLEMS OF ESTIMATING THE UNCERTAINTY OF WATER PH MEASUREMENT

Anna Szlachta, Mykhaylo Dorozhovets — Mon, 25 Mar 2024 13:12:19 +0000

The article analyses the main problems associated with evaluation the combined standard uncertainty of the water pH measurement by the type A and B methods. It is shown that, for a small number n of the tested water samples, the type A standard uncertainty determined by the conventional method is underestimated. Therefore, the correct expression to calculate this component of uncertainty is presented. The authors also highlighted that since in the practical measurement the influencing quantities and sensitivity coefficients are not known absolutely precisely, therefore their uncertainties often have to be taken into account when estimating the combined uncertainty. For this purpose the authors have propose approach to correctly determine the type B components of combined standard uncertainty caused by not only the values of influencing quantities and sensitivity coefficients, but also their uncertainties. The proposed approaches are illustrated by estimating the uncertainty in the measurement of drinking water pH, presenting the corresponding components of measurement uncertainty budget.

Advances in IT and Electrical Engineering

Modeling of the textronic structure using the Iterative Fundamental Solutions Method

PROBLEMS OF ESTIMATING THE UNCERTAINTY OF WATER PH MEASUREMENT