Results 61 to 70 of about 48,174 (313)
Investigation of Equating Error in Tests with Differential Item Functioning
International Journal of Assessment Tools in Education, 2018 In this study purposes to indicate the effect ofthe number of DIF items and the distribution of DIF items in these forms, whichbe equalized on equating error. Mean-mean, mean-standard deviation, Haebara andStocking-Lord Methods used in common item design
Meltem Yurtçu, Cem Oktay Güzeller
doaj +1 more source
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 +3 more
wiley +1 more source
Evaluation of two types of Differential Item Functioning in factor mixture models with binary outcomes [PDF]
, 2013 textDifferential Item Functioning (DIF) occurs when examinees with the same ability have different probabilities of endorsing an item. Conventional DIF detection methods (e.g., the Mantel-Hansel test) can be used to detect DIF only across observed groups,
Lee, Hwa Young, doctor of educational psychology
core
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 +3 more
wiley +1 more source
Revista Facultad Nacional de Salud Pública, 2019 Improving Katz index interpretability contributes to a better understanding of its results facilitating decision making and intervention planning. Objective: To evaluate the validity of the Katz geriatric scale in senior citizens from a Rasch model ...
Diego Fernando Rojas-Gualdrón +4 more
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Differential Item Functioning: Current Issues [PDF]
, 2005 This study describes current issues of differential item functioning (DIF) used by psychometricians and test specialists to identify item fairness across members of different subgroups such as males and females. First, the definition of DIF was discussed,
Park, Gi-Pyo
core
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source
Impact of differential item functioning on item model fit using concurrent equating method
Large-scale Assessments in EducationThis 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
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