Results 81 to 90 of about 234,443 (351)

A Rasch and confirmatory factor analysis of the General Health Questionnaire (GHQ) - 12 [PDF]

, 2010
Background The General Health Questionnaire (GHQ) - 12 was designed as a short questionnaire to assess psychiatric morbidity. Despite the fact that studies have suggested a number of competing multidimensional factor structures, it continues to be ...
Adam B Smith, Dan P Stark, Galina Velikova, Lesley J Fallowfield, Valerie Jenkins   +4 more
core   +2 more sources

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Impact of differential item functioning on item model fit using concurrent equating method

Large-scale Assessments in Education
This study aimed to evaluate the item model fit by equating the forms of the PISA 2018 mathematics subtest with concurrent common items equating in samples from Türkiye, the UK, and Italy.
Zeynep Uzun, Tuncay Öğretmen
doaj   +1 more source

Reengineering the Glaucoma Quality of Life-15 Questionnaire with Rasch Analysis [PDF]

, 2011
This article is made available with the permission of the publisher, Association for Research in Vision and OphthalmologyPurpose.: To investigate, using Rasch analysis, whether the 15-item Glaucoma Quality of Life-15 (GQL-15) forms a valid scale and to ...
Hirneiss, C, Kernt, M, Khadka, Jyoti, McAlinden, Colm, Pesudovs, Konrad, Vogel, M   +5 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Differential Item Functioning of the region-based national examination equipment

REID (Research and Evaluation in Education)
This research aims to detect Differential Item Functioning (DIF) in the 2014/2015 National Examination Questions in mathematics of junior high schools and equivalent-level schools in the Yogyakarta region as a reference group and the South Kalimantan ...
Adi Setiawan, Gulzhaina Kuralbaevna Kassymova, Vianney Mbazumutima, Anggit Reviana Dewi Agustyani   +3 more
doaj   +1 more source

Assessing Differential Item Functioning on the Test of Relational Reasoning

Frontiers in Education, 2018
The test of relational reasoning (TORR) is designed to assess the ability to identify complex patterns within visuospatial stimuli. The TORR is designed for use in school and university settings, and therefore, its measurement invariance across diverse ...
Denis Dumas, Patricia Alexander
doaj   +1 more source

Detection of Differential Item Functioning

Methodology, 2012
This study analyzes Differential Item Functioning (DIF) with three combined decision rules and compares the results with the variation of the Mantel-Haenszel procedure (vaMH) proposed by Mazor, Clauser, and Hambleton (1994). One decision rule combines the Mantel-Haenszel procedure (MH) with the Breslow-Day test of trend in odds ratio heterogeneity (BDT)
Pedro Prieto-Marañón, María Ester Aguerri, María Silvia Galibert, Horacio Félix Attorresi   +3 more
openaire   +1 more source

Gender Fairness within the Force Concept Inventory [PDF]

, 2017
Research on the test structure of the Force Concept Inventory (FCI) has largely ignored gender, and research on FCI gender effects (often reported as "gender gaps") has seldom interrogated the structure of the test.
Henderson, Rachel, Lindell, Rebecca, Papak, Alexis, Stewart, Gay, Stewart, John, Traxler, Adrienne   +5 more
core   +5 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source