Results 21 to 30 of about 2,168,210 (298)
Single-particle levitation system for automated study of homogeneous solute nucleation [PDF]
, 2006 We present an instrument that addresses two critical requirements for quantitative measurements of the homogeneous crystal nucleation rate in supersaturated aqueous solution. First, the need to perform repeated measurements of nucleation incubation times
Flagan, Richard C. +2 more
core +1 more source
Accuracy of velocities from repeated GPS measurements [PDF]
Natural Hazards and Earth System Sciences, 2015 Today repeated GPS measurements are still in use, because we cannot always employ GPS permanent stations due to a variety of limitations. One area of study that uses velocities/deformation rates from repeated GPS measurements is the monitoring of crustal
V. Akarsu, D. U. Sanli, E. Arslan
doaj +1 more source
Characterization of a qubit Hamiltonian using adaptive measurements in a fixed basis [PDF]
, 2011 We investigate schemes for Hamiltonian parameter estimation of a two-level system using repeated measurements in a fixed basis. The simplest (Fourier based) schemes yield an estimate with a mean square error (MSE) that decreases at best as a power law ~N^
Alexandr Sergeevich +6 more
core +2 more sources
Generalized Mixed Models - an application to longitudinal data of citrus canker
Acta Scientiarum: Technology, 2019 There are several techniques available for longitudinal data analysis. In the last decade, much emphasis has been placed on generalized mixed models. The present work is dedicated to give an overview of this technique, with emphasis on the formulation ...
João Pedro Serenini +3 more
doaj +1 more source
Empirical likelihood estimation in multivariate mixture models with repeated measurements
Statistical Theory and Related Fields, 2020 Multivariate mixtures are encountered in situations where the data are repeated or clustered measurements in the presence of heterogeneity among the observations with unknown proportions.
Yuejiao Fu +3 more
doaj +1 more source
Springer: An R package for bi-level variable selection of high-dimensional longitudinal data
Frontiers in Genetics, 2023 In high-dimensional data analysis, the bi-level (or the sparse group) variable selection can simultaneously conduct penalization on the group level and within groups, which has been developed for continuous, binary, and survival responses in the ...
Fei Zhou +4 more
doaj +1 more source
Repeated Measurements Designs. II. [PDF]
The Annals of Statistics, 1977 Abstract : Repeated measurements designs are concerned with scientific experiments in which subjects (experimental units) are repeatedly exposed to a sequence of different or identical tests (treatments). These designs have application in many branches of scientific inquiry such as: Biology, education, food science, marketing, environmental engineering,
Hedayat, A., Afsarinejad, K.
openaire +2 more sources
Effects of measurement intervals on the values of repeated auscultatory blood pressure measurements
Clinical and Experimental Hypertension, 2020 Objective: For repeated measurements of blood pressure (BP) using the auscultatory method, current guidelines recommend intervals of 1–2 minutes; however, evidence to support this recommendation is insufficient.
Miki Imamura +5 more
doaj +1 more source
Frontiers in Cardiovascular Medicine, 2023 BackgroundWe investigated whether repeatedly measured global longitudinal strain (GLS) has incremental prognostic value over repeatedly measured left ventricular ejection fraction (LVEF) and N-terminal pro B-type natriuretic peptide (NT-proBNP), and a ...
Sabrina Abou Kamar +19 more
doaj +1 more source
Prognostic Value of Serial Galectin‐3 Measurements in Patients With Acute Heart Failure
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2017 BackgroundSeveral clinical studies have evaluated the association between galectin‐3 levels and outcome in patients with heart failure (HF). However, little is known about the predictive value of repeated galectin‐3 measurements. This study evaluates the
Laura C. van Vark +11 more
doaj +1 more source