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Discrete mathematical structures in the analysis and synthesis of passive and active vibration isolating devices

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2023
The article deals with discrete mathematical structures used for the analysis and synthesis of passive and active vibration isolation devices. It is shown that approaches of discrete mathematics in the form of kinematic graphs and their further ...
Любов Віталіївна Бовнегра   +4 more
doaj   +5 more sources

Convergence theorem of Pettis integrable multivalued pramart [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – In this work, the authors are interested in the notion of vector valued and set valued Pettis integrable pramarts. The notion of pramart is more general than that of martingale.
M'Hamed El-Louh   +2 more
doaj   +1 more source

Round-Trip Wireless Charging Infrastructure for Heterogeneous Electric Vehicles on Highways: Modelling and Optimization

open access: yesWorld Electric Vehicle Journal, 2023
In this paper, we propose a new approach to dynamic wireless charging that allows electric vehicles to charge wirelessly while in motion in both lanes on highways.
Mohammed Bourzik   +3 more
doaj   +1 more source

Examining the learning process of simple mathematical structures [PDF]

open access: yesYıldız Journal of Educational Research, 2023
A structure is a construction block that is formed under some specific rule, theory, axiom, etc. Mathematical structures, on the other hand, consist of elements and with these elements acting together, the structure gains integrity. Especially in teacher
Özlem ÇEZİKTÜRK   +8 more
doaj   +1 more source

Circuit analysis of the Drosophila brain using connectivity-based neuronal classification reveals organization of key communication pathways

open access: yesNetwork Neuroscience, 2023
We present a functionally relevant, quantitative characterization of the neural circuitry of Drosophila melanogaster at the mesoscopic level of neuron types as classified exclusively based on potential network connectivity.
Ketan Mehta   +2 more
doaj   +1 more source

On nonnil-coherent modules and nonnil-Noetherian modules

open access: yesOpen Mathematics, 2022
In this article, we introduce two new classes of modules over a ϕ\phi -ring that generalize the classes of coherent modules and Noetherian modules. We next study the possible transfer of the properties of being nonnil-Noetherian rings, ϕ\phi -coherent ...
Haddaoui Younes El   +2 more
doaj   +1 more source

A New Fifth-Order Finite Difference Compact Reconstruction Unequal-Sized WENO Scheme for Fractional Differential Equations

open access: yesFractal and Fractional, 2022
This paper designs a new finite difference compact reconstruction unequal-sized weighted essentially nonoscillatory scheme (CRUS-WENO) for solving fractional differential equations containing the fractional Laplacian operator.
Yan Zhang, Jun Zhu
doaj   +1 more source

New Third-Order Finite Volume Unequal-Sized WENO Lagrangian Schemes for Solving Euler Equations

open access: yesMathematics, 2023
In this paper, new third-order finite volume unequal-sized weighted essentially non-oscillatory (US-WENO) Lagrangian schemes are designed to solve Euler equations in two and three dimensions. The spatial reconstruction procedures are implemented by using
Yan Tan, Hui Lv, Jun Zhu
doaj   +1 more source

On 1-absorbing δ-primary ideals

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
Let R be a commutative ring with nonzero identity. Let 𝒥(R) be the set of all ideals of R and let δ : 𝒥 (R) → 𝒥 (R) be a function. Then δ is called an expansion function of ideals of R if whenever L, I, J are ideals of R with J ⊆ I, we have L ⊆ δ (L) and
Khalfi Abdelhaq El   +3 more
doaj   +1 more source

Mathematical Modeling of Vibration Dampers of Vibration-Insulated Structures [PDF]

open access: yesEPJ Web of Conferences, 2021
Vibration dampers are installed on the machine foundations in order to reduce the vibration level. Such technological solutions are most expedient in the case of a harmonic load with a low instability of the vibration frequency. Unfortunately, dampers do
Sosenushkin Evgeny   +3 more
doaj   +1 more source

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