Detection of Uniform and Non-Uniform Differential Item Functioning by Item Focussed Trees [PDF]
arXiv, 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. The classical approach allows to detect DIF by distinguishing between multiple groups.
Berger, Moritz, Tutz, Gerhard
arxiv +5 more sources
Nonlocal Hardy type inequalities with optimal constants and remainder terms [PDF]
Ann. Univ. Buchar. Math. Ser. 3 (LXI) (2012), no. 2, 187-200, 2012 Using a groundstate transformation, we give a new proof of the optimal Stein-Weiss inequality of Herbst [\int_{\R^N} \int_{\R^N} \frac{\varphi (x)}{\abs{x}^\frac{\alpha}{2}} I_\alpha (x - y) \frac{\varphi (y)}{\abs{y}^\frac{\alpha}{2}}\dif x \dif y \le \mathcal{C}_{N,\alpha, 0}\int_{\R^N} \abs{\varphi}^2,] and of its combinations with the Hardy ...
Moroz, Vitaly, Van Schaftingen, Jean
arxiv +2 more sources
Identification and Characterization of the dif Site from Bacillus subtilis [PDF]
, 2001 Bacteria with circular chromosomes have evolved systems that ensure multimeric chromosomes, formed by homologous recombination between sister chromosomes during DNA replication, are resolved to monomers prior to cell division.
Stephen A. Sciochetti +2 more
openalex +3 more sources
Evaluation of memory-preserving models for particle transport in random media [PDF]
EPJ Web of ConferencesA 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
Exploring differential item functioning in the SF-36 by demographic, clinical, psychological and social factors in an osteoarthritis population [PDF]
, 2013 The SF-36 is a very commonly used generic measure of health outcome in osteoarthritis (OA). An important, but frequently overlooked, aspect of validating health outcome measures is to establish if items work in the same way across subgroup of a ...
A Williams +34 more
core +3 more sources
Erythroderma caused by vancomycin in children: concentration and speed of infusion
Mexican 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
Child depression in patients with cancer
Mexican Journal of Medical Research ICSA, 2014 Depression is characterized by a set of symptoms such as sadness, irritability, loss of interest, fatigue, feelings of ineptitude and guilt, insomnia, suicidal thoughts, loss of appetite, weight loss, and difficulty concentrating, etc.
Georgina Romo-Hernández +4 more
doaj +1 more source
High symmetry anthradithiophene molecular packing motifs promote thermally-activated singlet fission [PDF]
, 2022 When considering the optimal molecular packing to realize charge multiplication in organic photovoltaic materials, subtle changes in intermolecular charge transfer (CT) coupling can strongly modulate singlet fission. To understand why certain packing morphologies are more conducive to charge multiplication by triplet pair (TT) formation, we measure ...
arxiv +1 more source
A Penalty Approach to Differential Item Functioning in Rasch Models [PDF]
, 2012 A new diagnostic tool for the identification of differential item functioning (DIF) is proposed. Classical approaches to DIF allow to consider only few subpopulations like ethnic groups when investigating if the solution of items depends on the ...
Schauberger, Gunther, Tutz, Gerhard
core +1 more source
C-BORD project: “Effective container inspection at BORDer control points”
EPJ Web of Conferences, 2017 In the framework of the C-BORD project of the H2020 programme to provide a safety chain for container inspection at border control points, CEA-DAM is involved to develop an identification method of Special Nuclear Material. Using active interrogation the
Etilé Asénath +4 more
doaj +1 more source