Results 71 to 80 of about 17,517 (161)

Simulation‐Based Bayesian Predictive Probability of Success for Interim Monitoring of Clinical Trials With Competing Event Data: Two Case Studies

open access: yesPharmaceutical Statistics, Volume 25, Issue 1, January/February 2026.
ABSTRACT Bayesian predictive probabilities of success (PPoS) use interim trial data to calculate the probability of trial success. These quantities can be used to optimise trial size or to stop for futility. In this paper, we describe a simulation‐based approach to compute the PPoS for clinical trials with competing event data, for which no specific ...
Chiara Micoli   +5 more
wiley   +1 more source

Rate of approximation of blending type modified univariate and bivariate λ-Schurer-Kantorovich operators

open access: yesKuwait Journal of Science
In this work, we investigate some approximation properties of blending type univariate and bivariate Schurer-Kantorovich operators based on shape parameter λ ∈ [−1, 1]. We evaluate some moment estimates and obtain several direct theorems.
Reşat Aslan
doaj   +1 more source

Functional Inequalities and Subordination: Stability of Nash and Poincar\'e inequalities [PDF]

open access: yes, 2011
We show that certain functional inequalities, e.g.\ Nash-type and Poincar\'e-type inequalities, for infinitesimal generators of $C_0$ semigroups are preserved under subordination in the sense of Bochner.
Schilling, René L., Wang, Jian
core   +1 more source

Conformally Covariant Bi-Differential Operators on a Simple Real Jordan Algebra

open access: yes, 2017
For a simple real Jordan algebra $V,$ a family of bi-differential operators from $\mathcal{C}^\infty(V\times V)$ to $\mathcal{C}^\infty(V)$ is constructed.
Clerc, Jean-Louis   +2 more
core  

A new kind of Durrmeyer-Stancu-type operators

open access: yesDemonstratio Mathematica
The objective of this study is to examine a class of positive linear operators, defined in terms of the bψ,kλ,μ{b}_{\psi ,k}^{\lambda ,\mu } basis and to analyze their approximation properties. Direct estimates for the (λ,μ)\left(\lambda ,\mu )-Durrmeyer-
Cai Qing-Bo   +2 more
doaj   +1 more source

Approximation by λ-Bernstein type operators on triangular domain

open access: diamond, 2023
Qing‐Bo Cai   +4 more
openalex   +2 more sources

Self-similar Cauchy problems and generalized Mittag-Leffler functions

open access: yes, 2019
By observing that the fractional Caputo derivative can be expressed in terms of a multiplicative convolution operator, we introduce and study a class of such operators which also have the same self-similarity property as the Caputo derivative. We proceed
Patie, P., Srapionyan, A.
core  

Hopf's lemma for viscosity solutions to a class of non-local equations with applications

open access: yes, 2019
We consider a large family of non-local equations featuring Markov generators of L\'evy processes, and establish a non-local Hopf's lemma and a variety of maximum principles for viscosity solutions.
Biswas, Anup, Lőrinczi, József
core  

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