Results 11 to 20 of about 355,580 (298)

Constrained curve fitting [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2002
Lattice2001(plenary); plenary talk given by G.P. Lepage at Lattice 2001 (Berlin); 9 pages, 5 figures (postscript specials)
Lepage, G.P.   +6 more
openaire   +5 more sources

Curve Fitting with Clothoidal Splines

open access: yesJournal of Research of the National Bureau of Standards, 1982
Clothoids, i.e. curves Z(s) in R 2 whose curvatures x(s) are linear fitting functions of arclength s, have been used for some time for curve fitting purposes in engineering applications. The first part of the paper deals with some basic interpolation problems for clothoids and studies the existence and uniqueness of their solutions.
Stoer, J.
openaire   +4 more sources

The effect of the immunoassay curve fitting routine on bias in troponin

open access: yes, 2022
Objectives: Unlike many dose-response curves used in clinical chemistry, the immunoassay curve used to quantitate measurands is often sigmoidal rather than linear. Consequently, a more complex curve fitting model is required. Various models are available,
Hickman, Peter   +2 more
core   +1 more source

Models for COVID-19 Daily Confirmed Cases in Different Countries

open access: yesMathematics, 2021
In this paper, daily confirmed cases of COVID-19 in different countries are modelled using different mathematical regression models. The curve fitting is used as a prediction tool for modeling both past and upcoming coronavirus waves.
Hamdy M. Ahmed   +3 more
doaj   +1 more source

Functional Curve Fitting Algorithm via Multi-Heterogeneous Data Curve

open access: yesIEEE Access, 2017
Complex computing based on multi-heterogeneous parameters can utilize the Lebesgue measure to measure their linear and non-linear relations in infinite dimensional Hilbert space, which can characterize those different dimensional characteristics in a set
Laixin Shen   +3 more
doaj   +1 more source

Fitting Method of Optimal Energy-Running Time Curve Based on Train Operation Data of an Urban Rail Section

open access: yesJournal of Advanced Transportation, 2021
Due to the complexity of the operation control of urban rail transit and diversity requirements for section running time standards, based on actual train operation data, this paper proposes a curve fitting method to find the interrelation between running
Lianbo Deng   +3 more
doaj   +1 more source

The Mittag-Leffler Fitting of the Phillips Curve

open access: yesMathematics, 2019
In this paper, a mathematical model based on the one-parameter Mittag-Leffler function is proposed to be used for the first time to describe the relation between the unemployment rate and the inflation rate, also known as the Phillips curve. The Phillips
Tomas Skovranek
doaj   +1 more source

Neural-Network-Based Curve Fitting Using Totally Positive Rational Bases

open access: yesMathematics, 2020
This paper proposes a method for learning the process of curve fitting through a general class of totally positive rational bases. The approximation is achieved by finding suitable weights and control points to fit the given set of data points using a ...
Rocio Gonzalez-Diaz   +3 more
doaj   +1 more source

Spectral curve fitting of dielectric constants

open access: yesAIP Advances, 2017
Optical constants are important properties governing the response of a material to incident light. It follows that they are often extracted from spectra measured by absorbance, transmittance or reflectance.
M. Ruzi, C. Ennis, E. G. Robertson
doaj   +1 more source

Sicegar: R package for sigmoidal and double-sigmoidal curve fitting [PDF]

open access: yesPeerJ, 2018
Sigmoidal and double-sigmoidal dynamics are commonly observed in many areas of biology. Here we present sicegar, an R package for the automated fitting and classification of sigmoidal and double-sigmoidal data.
M. Umut Caglar   +2 more
doaj   +2 more sources

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