Results 41 to 50 of about 19,451 (267)

The relationship between algebraic equations and $(n,m)$-forms, their degrees and recurrent fractions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
Algebraic and recursion equations are widely used in different areas of mathematics, so various objects and methods of research that are associated with them are very important.
I.I. Lishchynsky
doaj   +1 more source

Vector Fitting–Cauchy Method for the Extraction of Complex Natural Resonances in Ground Penetrating Radar Operations

open access: yesAlgorithms, 2022
In this paper, we obtain the Complex Natural Resonances of an object from the backscattered response in the frequency domain with a novel rational function approximation method based on both Vector Fitting and Cauchy methods.
Andres Gallego   +2 more
doaj   +1 more source

Circulating tumor cell viability during and after radiotherapy mirrors treatment response in cancer patients

open access: yesMolecular Oncology, EarlyView.
Radiotherapy (RT) response depends on the DNA repair capacity of tumor and host cells. We show that circulating tumor cell (CTC) counts and apoptosis rates before and after RT predict treatment response and outcome, which can be accessed via easily accessible liquid biopsy approaches. Created in BioRender. Wikman, H.
Yvonne Goy   +10 more
wiley   +1 more source

On rational L2-approximation

open access: yesJournal of Approximation Theory, 1976
Zusammenfassung Es wird gezeigt, daβ es bei der rationalen L 2 -Approximation uber einem Intervall keine universelle Schranke fur die Zahl der lokalen Minima gibt. Fur spezielle Zahler- und Nennergrade wurde dies bereits von Wolfe bewiesen. Die diskrete Approximation wird dagegen abgesetzt. Scharfere Aussagen ergeben sich auch beim Nennergrad eins,
openaire   +2 more sources

On monotone Rational Approximation

open access: yesJOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences, 2017
In this chapter,we focus on the shape preserving approximation using rational  polynomials, for rational in _spaces, . In our work, we solve a problem raised by R. DeVore in several lectures for many years ago.
Bhaya, Eman S., Ahmed, Dhay Basim
openaire   +2 more sources

On rational approximation in a ball in ℂN

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
We study rational approximations of elements of a special class of meromorphic functions which are characterized by their holomorphic behavior near the origin in balls in ℂN by means of their rational approximants. We examine two modes of convergence for
P. W. Darko   +2 more
doaj   +1 more source

A Computational Method with MAPLE for a Piecewise Polynomial Approximation to the Trigonometric Functions

open access: yesMathematical and Computational Applications, 2018
A complete MAPLE procedure is designed to effectively implement an algorithm for approximating trigonometric functions. The algorithm gives a piecewise polynomial approximation on an arbitrary interval, presenting a special partition that we can get its ...
Le Phuong Quan
doaj   +1 more source

MITF maintains genome stability in nonmelanocyte lineages

open access: yesMolecular Oncology, EarlyView.
MITF is essential for melanocyte survival and acts as an oncogene in 10%–20% of melanomas. We show that MITF depletion causes genome instability in nonmelanocytic cells, leading to LATS2‐mediated P53 activation, cell cycle arrest, and apoptosis. This study highlights the role of MITF as a genome maintenance factor beyond the melanocyte lineage. Created
Drifa H. Gudmundsdottir   +13 more
wiley   +1 more source

Tumor B‐cell infiltration in platinum‐treated advanced muscle‐invasive urothelial carcinoma

open access: yesMolecular Oncology, EarlyView.
Bladder tumors with higher pretreatment memory B‐cell infiltration were linked to longer survival after cisplatin chemotherapy, but not carboplatin. These tumors also showed more organized immune structures (tertiary lymphoid structures) and a shared pro‐inflammatory B‐cell‐rich community, suggesting that memory B cells may help identify patients most ...
Konrad Stawiski   +10 more
wiley   +1 more source

General Approach to Function Approximation

open access: yesMathematics
Applying a predefined set of functionals to a function provides a set of numbers which characterize the function. One can then interpret an approximation very generally as a construction of some function form which reproduces these numbers if the same ...
Andrej Liptaj
doaj   +1 more source

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