Results 71 to 80 of about 282,700 (287)

On the Achievable Stabilization Delay Margin for Linear Plants with Time-Varying Delays

open access: yesMathematics, 2017
The paper contributes to stabilization problems of linear systems subject to time-varying delays. Drawing upon small gain criteria and robust analysis techniques, upper and lower bounds on the largest allowable time-varying delay are developed by using ...
Jing Zhu
doaj   +1 more source

Rational-spline approximation with automatic tension adjustment [PDF]

open access: yes
An algorithm for weighted least-squares approximation with rational splines is presented. A rational spline is a cubic function containing a distinct tension parameter for each interval defined by two consecutive knots.
Kerr, P. A., Schiess, J. R.
core   +1 more source

A continued fraction generator for smooth pulse sequences [PDF]

open access: yes, 1971
Digital circuit produces rational output pulse rate at fraction of continuous input pulse rate. Output pulses have average rate with least possible deviation from absolute correct time spacing.
Cohn, M., Even, S., Lincoln, S. J.
core   +1 more source

On rational approximation to | x |

open access: yesStudia Scientiarum Mathematicarum Hungarica, 1998
Let \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{bbm} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $
openaire   +1 more source

Rational approximation of đ±âż

open access: yesProceedings of the American Mathematical Society, 2018
Let E k k ( n ) E_{kk}^{(n)} denote the minimax (i.e., best supremum norm) error in approximation of x n x^n on [ 0 , 1 ] [0,1] by rational functions of type
Nakatsukasa, Y, Trefethen, L
openaire   +2 more sources

The McCance Brain Care Score and Mortality: Evidence From a Large‐Scale Population‐Based Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives This study aimed to examine the relationship between the McCance Brain Care Score (BCS) and mortality in the general population. Methods We conducted a prospective, population‐based cohort study using data from the UK Biobank. Participants with complete data enabling calculation of BCS and full mortality information were included ...
Zhiqiang Xu, Xiaoxiao Wang, Nan Li
wiley   +1 more source

Calculation algorithm of rational estimations of recurrence periodical fourth order fraction

open access: yesKarpatsÊčkĂŹ MatematičnĂŹ PublĂŹkacĂŹĂŻ, 2014
Recurrence fourth order fractions are studied. Connection with algebraic fourth order equations is established. Calculation algorithms of rational contractions of such fractions are built.
R.A. Zatorsky, A.V. Semenchuk
doaj   +1 more source

Pad\'{e}-type approximations to the resolvent of fractional powers of operators

open access: yes, 2019
We study a reliable pole selection for the rational approximation of the resolvent of fractional powers of operators in both the finite and infinite dimensional setting. The analysis exploits the representation in terms of hypergeometric functions of the
Aceto, Lidia, Novati, Paolo
core  

Real‐World Performance of CSF Kappa Free Light Chains in the 2024 McDonald Criteria

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Kappa free light chains (KFLCs) in the cerebrospinal fluid (CSF) have a similar performance to CSF‐restricted oligoclonal bands (OCB) for multiple sclerosis (MS) diagnosis. To help with implementation, we set out to resolve several remaining uncertainties: (1) performance in a real‐world cohort and the 2024 McDonald criteria; (2 ...
Maya M. Leibowitz   +11 more
wiley   +1 more source

Approximation by rational functions in Morrey-Smirnov classes

open access: yesKuwait Journal of Science, 2018
In this article, we investigate the direct problem of approximation theory in Morrey-Smirnov classes of analytic functions, defined on a doubly-connected domain bounded by two sufficiently smooth curves.
Mohammad Ali   +2 more
doaj  

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