Cluster sampling - Open Access .click

Results 31 to 40 of about 1,080,622 (262)

, 2009
We determine the distance to the open cluster NGC 2264 using a statistical analysis of cluster member inclinations. We derive distance-dependent values of sin i (where i is the inclination angle) for 97 stars in NGC 2264 from the rotation periods ...
Andrew H. Szentgyorgyi +28 more
core +2 more sources

On efficiency of cluster sampling on sampling on two occasions

Statistica, 2007
In this paper it has been shown that even if the intra-class correlation coefficient among the units in the same cluster is positive, under certain condition, the cluster sampling on two occasions is likely to be more efficient than the simple random ...
Bijoy Kumar Pradhan
doaj +1 more source

Impact of Systematics on SZ-Optical Scaling Relations [PDF]

, 2012
One of the central goals of multi-wavelength galaxy cluster cosmology is to unite all cluster observables to form a consistent understanding of cluster mass.
Angulo +26 more
core +1 more source

The MedSupport Multilevel Intervention to Enhance Support for Pediatric Medication Adherence: Development and Feasibility Testing

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction We developed MedSupport, a multilevel medication adherence intervention designed to address root barriers to medication adherence. This study sought to explore the feasibility and acceptability of the MedSupport intervention strategies to support a future full‐scale randomized controlled trial.
Elizabeth G. Bouchard +8 more
wiley +1 more source

Gravitational lens magnification by Abell 1689: Distortion of the background galaxy luminosity function [PDF]

, 2000
Gravitational lensing magnifies the luminosity of galaxies behind the lens. We use this effect to constrain the total mass in the cluster Abell 1689 by comparing the lensed luminosities of background galaxies with the luminosity function of an ...
Dye, S. +5 more
core +2 more sources

Parent‐to‐Child Information Disclosure in Pediatric Oncology

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Despite professional consensus regarding the importance of open communication with pediatric cancer patients about their disease, actual practice patterns of disclosure are understudied. Extant literature suggests a significant proportion of children are not told about their diagnosis/prognosis, which is purported to negatively ...
Rachel A. Kentor +12 more
wiley +1 more source

On some estimators in cluster sampling

Lietuvos Matematikos Rinkinys, 1997
There is not abstract.
Gražvydas Klimavičius +2 more
doaj +1 more source

Managing work flow in high enrolling trials: The development and implementation of a sampling strategy in the PREPARE trial

Contemporary Clinical Trials Communications, 2021
Introduction: Pragmatic trials in comparative effectiveness research assess the effects of different treatment, therapeutic, or healthcare options in clinical practice.
David Pogorzelski +384 more
doaj +1 more source

Effects of Sampling on Measuring Galaxy Count Probabilities [PDF]

, 1995
We investigate in detail the effects of sampling on our ability to accurately reconstruct the distribution of galaxies from galaxy surveys. We use a simple probability theory approach, Bayesian classifier theory and Bayesian transition probabilities.
Szalay, Alexander S., Szapudi, István
core +2 more sources

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser +6 more
wiley +1 more source

prevalence
adaptive cluster sampling
design effect

medicine
systematic sampling
sampling