Results 21 to 30 of about 75,343 (266)

The Index and Split Forms of Linear Differential-Algebraic Equations

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
We consider linear systems of ordinary differential equations (ODE) with rectangular matrices of coefficients, including the case when the matrix before the derivative of the desired vector function is not full rank for all argument values from the ...
M.V. Bulatov, V.F. Chistyakov
doaj   +1 more source

The Singular Part as Fixed Point [PDF]

open access: yesThe American Mathematical Monthly, 2017
The aim of this note is to investigate the Lebesgue decomposition theorem of nonnegative finite measures from a new point of view.
openaire   +2 more sources

Kinematics and workspace analysis of a 3DOF parallel reconfigurable robot [PDF]

open access: yesمجله مدل سازی در مهندسی, 2000
Parallel robots are widely used in many industrial and medical applications. Reconfigurable parallel robots could be defined as a group of parallel robots that can have different geometries, thus obtaining different degrees of freedom derived from the ...
Mohammad Reza Salehi Kolahi   +3 more
doaj   +1 more source

Methods for Determining the Size of three-Dimensional Objects in Images

open access: yesЦифровая трансформация, 2021
Computer vision technology is used to obtain the necessary information from images. The two-dimensional image was transformed into its corresponding three-dimensional structure based on the reconstruction process and singular points. A review of software
L. V. Serebryanaya, V. N. Breshko
doaj   +2 more sources

Identification of discrete chaotic maps with singular points

open access: yesDiscrete Dynamics in Nature and Society, 2001
We investigate the ability of artificial neural networks to reconstruct discrete chaotic maps with singular points. We use as a simple test model the Cusp map. We compare the traditional Multilayer Perceptron, the Chebyshev Neural Network and the Wavelet
P. G. Akishin   +3 more
doaj   +1 more source

Stability of the Planar Quadratic Systems from the Ring-Theoretic Viewpoint

open access: yesMathematics, 2022
We show that the classical result on the stability of the origin in a quadratic planar system of ODEs can be formulated using either matrix theory or via its associated real and complex Marcus algebra.
Borut Zalar, Matej Mencinger
doaj   +1 more source

Experimental Evidence for Double Quaternary Azeotropy’s Existence

open access: yesEntropy, 2023
The phase equilibrium in an acetonitrile + water + cyclohexene + chloroform system was studied at 101.3 kPa. A prediction regarding the internal structure of the composition tetrahedron (presence/absence of one/two internal singular points) was made ...
Anastasia Frolkova   +2 more
doaj   +1 more source

Analytical Solution for Two-Dimensional Coupled Thermoelastodynamics in a Cylinder [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2013
An infinitely long hollow cylinder containing isotropic linear elastic material is considered under the effect of arbitrary boundary stress and thermal condition.
Morteza Eskandari-Ghadi   +3 more
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

Singular points of algebraic curves

open access: yesJournal of Symbolic Computation, 1990
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Takis Sakkalis, Rida T. Farouki
openaire   +1 more source

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