Results 11 to 20 of about 2,171,385 (311)

Dif-in-Dif Estimators of Multiplicative Treatment Effects [PDF]

open access: yesJournal of Econometric Methods, 2014
Abstract We consider a difference-in-differences setting with a continuous outcome. The standard practice is to take its logarithm and then interpret the results as an approximation of the multiplicative treatment effect on the original outcome. We argue that a researcher should rather focus on the non-transformed outcome when discussing
Ciani, E, Fisher, P
openaire   +11 more sources

Developments in Defining dif [PDF]

open access: greenJournal of Bacteriology, 2010
The Gram-negative soil bacterium Myxococcus xanthus has a complex life cycle that involves vegetative growth and, when nutrients are limiting, formation of spore-containing fruiting bodies. The progression of the developmental cycle depends in part upon the ability of M.
Eva M, Campodonico, David R, Zusman
openaire   +4 more sources

DIF in Spanish and Mathematics from Costa Rica’s national tests in reported students with ADHD

open access: diamondActualidades Investigativas en Educación, 2017
The detection of differential item functioning (DIF) is fundamental to ensure instruments’ invariance, and, therefore, a better estimate of the construct being measured across the different groups of examinees. The purpose of this research was to provide
Eiliana Montero Rojas   +1 more
doaj   +3 more sources

Prompt fission neutron spectra in the 235U(n,f) reaction [PDF]

open access: yesEPJ Web of Conferences, 2023
Prompt fission neutron spectra (PFNS) are crucial to any neutronic simulation of critical nuclear systems. An experimental setup dedicated to the measurements of PFNS of very high accuracy was developed at the Los Alamos Neutron Science Center (LANSCE ...
Mauss B.   +13 more
doaj   +1 more source

Direct Immunofluorescence in Oral Lichen Planus [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Introduction: Oral lichen planus (OLP) is a common immunemediated oral mucosal disease. Diagnosis of OLP depends mainly on both clinical and histopathological features.
Waranun Buajeeb   +3 more
doaj   +1 more source

Using dense seismo-acoustic network to provide timely warning of the 2019 paroxysmal Stromboli eruptions

open access: yesScientific Reports, 2021
Stromboli Volcano is well known for its persistent explosive activity. On July 3rd and August 28th 2019, two paroxysmal explosions occurred, generating an eruptive column that quickly rose up to 5 km above sea level. Both events were detected by advanced
A. Le Pichon   +11 more
doaj   +1 more source

Detection of Uniform and Non-Uniform Differential Item Functioning by Item Focussed Trees [PDF]

open access: yes, 2015
Detection of differential item functioning by use of the logistic modelling approach has a long tradition. One big advantage of the approach is that it can be used to investigate non-uniform DIF as well as uniform DIF.
Berger, Moritz, Tutz, Gerhard
core   +2 more sources

Evaluation of memory-preserving models for particle transport in random media [PDF]

open access: yesEPJ Web of Conferences
A shortcoming of the Levermore-Pomraning (LP) model is its inaccuracy to treat the transport of particles in a diffusive material alternating with a transparent one. Enhanced-memory LP models have been proposed by Zimermann et al.
Samba Gerald   +4 more
doaj   +1 more source

Erythroderma caused by vancomycin in children: concentration and speed of infusion

open access: yesMexican Journal of Medical Research ICSA, 2013
Vancomycin is an antibiotic glycopeptide that was isolated of the Streptomyces orientalis. It was introduced in the clinical practice for treatment of infections caused by staphylococcus in which other antibiotics were proving to be ineffective.
José F. Luna Álvarez   +5 more
doaj   +1 more source

A new method for detecting differential item functioning in the Rasch model [PDF]

open access: yes, 2010
Differential item functioning (DIF) can lead to an unfair advantage or disadvantage for certain subgroups in educational and psychological testing. Therefore, a variety of statistical methods has been suggested for detecting DIF in the Rasch model.
Kopf, Julia   +2 more
core   +2 more sources

Home - About - Disclaimer - Privacy