Results 51 to 60 of about 11,806,111 (314)

Mathematical Modeling of the Casting Process of the Second Merger

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2022
The paper shows the method of making the equations of the mathematical model that describes the dependence of several mechanical and casting properties on the chemical composition of the cast irons of the second fusion and on the casting conditions.
Marian-Iulian NEACȘU
doaj   +1 more source

Why more physics can help achieving better mathematics

open access: yes, 2017
In this paper, we discuss the question whether a physical "simplification" of a model makes it always easier to study, at least from a mathematical and numerical point of view.
Eikmeier, André   +2 more
core   +1 more source

Skeptical Notes on a Physics of Passage [PDF]

open access: yes, 2014
This paper investigates the mathematical representation of time in physics. In existing theories time is represented by the real numbers, hence their formal properties represent properties of time: these are surveyed. The central question of the paper is
Huggett, Nick
core   +2 more sources

Overview of molecular signatures of senescence and associated resources: pros and cons

open access: yesFEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas   +6 more
wiley   +1 more source

Identification of heat exchangers according to the criterion of energy efficiency [PDF]

open access: yesMATEC Web of Conferences, 2019
The article presents the results of the analysis of the characteristics of heat exchangers methods for determining their mathematical models. The necessity of the availability of the mathematical model during the synthesis of automatic control systems ...
Velichkin Vladimir, Zavyalov Vladimir
doaj   +1 more source

Mathematical properties of generalized Sturmian functions

open access: yes, 2012
We study some mathematical properties of generalized Sturmian functions which are solutions of a Schrödinger-like equation supplemented by two boundary conditions.
M. Ambrosio   +4 more
semanticscholar   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Mathematical Properties of the Binomial-Poisson Distribution

open access: yesJournal of Applied Sciences and Environmental Management
This study conducts a thorough analytical exploration of the Binomial-Poisson distribution, a compound probability model where the number of Binomial trials follows a Poisson distribution. Through application of the compound distribution methodology and
A. A. Ayenigba   +3 more
doaj   +4 more sources

Mathematical analysis of transmission properties of electromagnetic meta-materials

open access: yesNetworks and Heterogeneous Media, 2019
We study time-harmonic Maxwell's equations in meta-materials that use either perfect conductors or high-contrast materials. Based on known effective equations for perfectly conducting inclusions, we calculate the transmission and reflection coefficients ...
Mario Ohlberger   +3 more
doaj   +1 more source

Mathematical aspects and topological properties of two chemical networks

open access: yesAIMS Mathematics, 2023
Graphs give a mathematical model of molecules, and thery are used extensively in chemical investigation. Strategically selections of graph invariants (formerly called "topological indices" or "molecular descriptors") are used in the mathematical modeling
Ali Al Khabyah
doaj   +1 more source

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