Results 41 to 50 of about 422,047 (168)
Фізика і хімія твердого тілаThis work investigates the frequency dispersion of electrical properties of biological tissues, particularly pig liver, using spectral analysis of conductivity.
D.M. Chervinko +5 more
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Proportion Regulation in Globally Coupled Nonlinear Systems
, 1995 As a model of proportion regulation in differentiation process of biological system, globally coupled activator-inhibitor systems are studied. Formation and destabilization of one and two cluster state are predicted analytically.
A. M. Turing +17 more
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Taylor Polynomials in a High Arithmetic Precision as Universal Approximators
ComputationFunction approximation is a fundamental process in a variety of problems in computational mechanics, structural engineering, as well as other domains that require the precise approximation of a phenomenon with an analytic function. This work demonstrates
Nikolaos Bakas
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Optimizing the Coefficients of Numerical Differentiation Formulae Using Neural Networks
IEEE Access, 2021 The use of a numerical differentiation formula (NDF) is an excellent method for solving stiff ordinary differential equations. However, the NDF method cannot fully adapt to all stiff systems.
Xinyu Yang +3 more
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Numerical Model For Vibration Damping Resulting From the First Order Phase Transformations
, 2007 A numerical model is constructed for modelling macroscale damping effects induced by the first order martensite phase transformations in a shape memory alloy rod.
Melnik, Roderick V. N. +1 more
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Minimal numerical differentiation formulas [PDF]
Numerische Mathematik, 2018 We investigate numerical differentiation formulas on irregular centers in two or more variables that are exact for polynomials of a given order and minimize an absolute seminorm of the weight vector. Error bounds are given in terms of a growth function that carries the information about the geometry of the centers.
Davydov, Oleg, Schaback, Robert
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New nonlinear model of population growth. [PDF]
PLoS ONE, 2017 The model of population growth is revised in this paper. A new model is proposed based on the concept of fractional differentiation that uses the generalized Mittag-Leffler function as kernel of differentiation.
Badr Saad T Alkahtani +2 more
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, 2015 We have developed a numerical differentiation scheme which eliminates evaluation of overlap determinants in calculating the time-derivative non-adiabatic couplings (TDNACs).
Izmaylov, Artur F. +2 more
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Revstat Statistical JournalMean absolute deviation function is used to explore the pattern and the distribution of the data graphically to enable analysts gaining greater understanding of raw data and to foster a quick and a deep understanding of the data as an important basis ...
Elsayed A. H. Elamir
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A stabilized algorithm for multi-dimensional numerical differentiation
Journal of Algorithms & Computational Technology, 2016 We develop a multi-dimensional numerical differentiation method in this paper. To obtain stable numerical derivatives, the Tikhonov regularization method in Hilbert scales is proposed to deal with illposedness of the problem. The penalty term in Tikhonov
Zhenyu Zhao +4 more
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