Results 61 to 70 of about 8,782 (264)

Notes on Cauchy–Stieltjes Kernel Families

open access: yesAxioms
The free Meixner family (FMF) is the family of measures that produces quadratic Cauchy–Stieltjes Kernel (CSK) families (i.e., meaning that the associated variance function (VF) is a polynomial with degree ≤2 in the mean).
Shokrya S. Alshqaq   +2 more
doaj   +1 more source

On the Statistical Analysis of the Harmonic Signal Autocorrelation Function

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
The article presents new tools for investigating the statistical properties of the harmonic signal autocorrelation function (ACF). These tools enable identification of the ACF estimator errors in measurements in which the triggering of the measurements ...
Sienkowski Sergiusz, Krajewski Mariusz
doaj   +1 more source

Lower bounds for variances of Poisson functionals

open access: yesElectronic Journal of Probability
Lower bounds for variances are often needed to derive central limit theorems. In this paper, we establish a lower bound for the variance of Poisson functionals that uses the difference operator of Malliavin calculus. Poisson functionals, i.e. random variables that depend on a Poisson process, are frequently studied in stochastic geometry.
Schulte, Matthias, Trapp, Vanessa
openaire   +2 more sources

Tauber Theory for Infinitely Divisible Variance Functions [PDF]

open access: yesBernoulli, 1997
We study a notion of Tauber theory for infinitely divisible natural exponential families, showing that the variance function of the family is (bounded) regularly varying if and only if the canonical measure of the Levy-Khinchine representation of the family is (bounded) regularly varying.
Bent Jørgensen   +3 more
openaire   +4 more sources

Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley   +1 more source

Regression Function and Noise Variance Tracking Methods for Data Streams with Concept Drift

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2018
Two types of heuristic estimators based on Parzen kernels are presented. They are able to estimate the regression function in an incremental manner. The estimators apply two techniques commonly used in concept-drifting data streams, i.e., the forgetting ...
Jaworski Maciej
doaj   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

open access: yesFEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Construction of nonsingular formulae of variance and covariance function of disturbing gravity gradient tensors

open access: yesGeodesy and Geodynamics, 2013
When the computational point is approaching the poles, the variance and covariance formulae of the disturbing gravity gradient tensors tend to be infinite, and this is a singular problem.
Liu Xiaogang   +3 more
doaj   +1 more source

The intracellular domain of TLR2 is capable of high‐affinity Zn binding: possible outcomes for the receptor activation

open access: yesFEBS Letters, EarlyView.
Toll‐like receptors (TLRs) are important in the innate immune system. This study explores the zinc‐binding ability of the TLR2 TIR domain (TLR2TIR). We found that TLR2TIR binds zinc with nanomolar affinity through its cysteine residues. Two of them, C673 and C713, are vital for receptor activation, indicating that zinc may play a role in initiating ...
Vladislav A. Lushpa   +8 more
wiley   +1 more source

Relationship between lactation curve function and phenotypic variance in random regression Test Day models

open access: yesItalian Journal of Animal Science, 2010
In Random Regression models (RRM), the most updated version of Test Day (TD) models, the lactation curve is split into a fixed average curve and a random animal specific part (deviation from the average curve) (Schaeffer, 2004). The variance component of
A. Cappio-Borlino   +2 more
doaj   +1 more source

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