Results 11 to 20 of about 662,340 (308)

Numerical investigation of two models of nonlinear fractional reaction subdiffusion equations [PDF]

open access: yes, 2022
We consider new numerical schemes to solve two different systems of nonlinear fractional reaction subdiffusion equations. These systems of equations model the reversible reaction A+B⇌C in the presence of anomalous subdiffusion.
Osman, Sheelan, Langlands, Trevor
core   +1 more source

Numerical upscaling of discrete network models [PDF]

open access: yes, 2022
S.67-92In this paper a numerical multiscale method for discrete networks is presented. The method gives an accurate coarse scale representation of the full network by solving sub-network problems.
Wester, K.   +5 more
core   +2 more sources

Assessment of strain measurement techniques to characterise mechanical properties of structural steel

open access: yesEngineering Science and Technology, an International Journal, 2014
Strain measurement is important in mechanical testing. A wide variety of techniques exists for measuring strain in the tensile test; namely the strain gauge, extensometer, stress and strain determined by machine crosshead motion, Geometric Moire ...
H.B. Motra   +2 more
doaj   +1 more source

Three-dimensional geologic modeling and groundwater flow modeling of the Töllinperä aquifer in the Hitura nickel mine area, Finland - Providing the framework for restoration and protection of the aquifer [PDF]

open access: yesBulletin of the Geological Society of Finland, 2004
Elevated concentrations of sulphate, chloride, and nickel were discovered in water samples taken from the Töllinperä aquifer in western Finland. The area is located adjacent to the tailings area of the Hitura nickel mine.
A. Artimo   +3 more
doaj   +1 more source

NUMERICAL MODELING OF AIR POLLUTION FROM DUMPS

open access: yesNauka ta progres transportu, 2019
Purpose. Rock dumps are long-term sources of air pollution. A significant amount of harmful substances enters the atmosphere. Particularly intense is the pollution of atmospheric air due to dusting dumps.
M. M. Biliaiev   +4 more
doaj   +1 more source

Modeling of Underactuated Ball and Beam System—A Comparative Study

open access: yesActuators, 2023
The article presents a comparison of the methods of modeling the underactuated ball and beam system. This study was carried out to select a model suitable for the development of a control system using the model-based design methodology.
Grzegorz Gembalczyk   +2 more
doaj   +1 more source

A numerical study of a left ventricular expander for heart failure with preserved ejection fraction

open access: yesRoyal Society Open Science, 2023
Increased cardiac stiffness hinders proper left ventricular (LV) expansion, resulting in decreased volume and diastolic dysfunction. LV expanders are spring-like devices designed to improve diastolic function by facilitating mechanical outward expansion.
Jonathan Weissmann   +3 more
doaj   +1 more source

Long span bridges buffeting response to wind turbulence [PDF]

open access: yesИнженерно-строительный журнал, 2020
The buffeting response of the cable-supported bridges is studied. Several wind turbulence models are summarized and wind field models for practical application in bridge and structural engineering is proposed. The wind turbulence model comprises the mean
R.N. Guzeev, A. Domaingo
doaj   +1 more source

Consistency of a method of moments estimator based on numerical solutions to asset pricing models [PDF]

open access: yes, 1993
This paper considers the properties of estimators based on numerical solutions to a class of economic models. In particular, the numerical methods discussed are those applied in the solution of linear integral equations, specifically Fredholm equations ...
Burnside, C., Craig Burnside, A
core   +1 more source

Numerical analysis of time-dependent Boussinesq models [PDF]

open access: yes, 1990
In this paper we analyse numerical models for time-dependent Boussinesq equations. These equations arise when so-called Boussinesq terms are introduced into the shallow water equations.
J. Mooiman   +13 more
core   +1 more source

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