Results 21 to 30 of about 19,516 (268)

Rate of convergence of beta operators of second kind for functions with derivatives of bounded variation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We study the approximation properties of beta operators of second kind. We obtain the rate of convergence of these operators for absolutely continuous functions having a derivative equivalent to a function of bounded variation.
Vijay Gupta, Ulrich Abel, Mircea Ivan
doaj   +1 more source

Reconstruction of Sensory Stimuli Encoded with Integrate-and-Fire Neurons with Random Thresholds

open access: yesEURASIP Journal on Advances in Signal Processing, 2009
We present a general approach to the reconstruction of sensory stimuli encoded with leaky integrate-and-fire neurons with random thresholds. The stimuli are modeled as elements of a Reproducing Kernel Hilbert Space. The reconstruction is based on finding
Aurel A. Lazar   +1 more
doaj   +1 more source

Multiple q-Integral and Records from Geometrically Distributed Sequences

open access: yesMathematics, 2022
We study the distribution theory of some statistics related to records from a sequence of geometrically distributed random variables. The main novelty in this study is the introduction of q-calculus techniques.
Fernando López-Blázquez   +1 more
doaj   +1 more source

Vector valued absolutely continuous functions on idempotent semigroups [PDF]

open access: yesTransactions of the American Mathematical Society, 1972
In this paper the concept of vector valued, absolutely continuous functions on an idempotent semigroup is studied. For F a function of bounded variation on the semigroup S of semicharacters with values of F in the Banach space X, let A = AC(S, X, F) be all those functions of bounded variation which are absolutely continuous with respect to F.
Alò, Richard A.   +2 more
openaire   +2 more sources

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Ostrowski Via a Two Functions Pompeiu's Inequality

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In this paper, some generalizations of Pompeiu's inequality for two complex-valued absolutely continuous functions are provided. They are applied to obtain some new Ostrowski type results.
Dragomir Silvestru Sever
doaj   +1 more source

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

open access: yesMolecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra   +10 more
wiley   +1 more source

An absolute continuity for positive operators on Banach lattices

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
For positive operators on a Banach lattice, absolute contnuity conditions are considered. An operator absolutely continuous with respect to T is compared to sums of compositions of T together with orthomorphisms or in special cases projections ...
W. Feldman   +2 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

The design of electronic medical records for patients of continuous care

open access: yesJournal of Infection and Public Health, 2021
In order to meet the ever-increasing needs of health care, as well as helping patients who need continuous care after being discharged from the hospital and making modern medical technology better serve humans, the design of electronic medical records ...
Xiaolan He   +4 more
doaj   +1 more source

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