Results 61 to 70 of about 1,081,470 (322)
On the complementarity of classical test theory and item response models: item difficulty estimates and computerized adaptive testing [PDF]
, 2014 This study aims to provide statistical evidence of the complementarity between classical test theory and item response models for certain educational assessment purposes.
DINIS MOTA DA COSTA PATRICIA +1 more
core +1 more source
FEBS Letters, EarlyView.In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley +1 more source
Item response theory – A first approach [PDF]
AIP Conference Proceedings, 2017 Research partially supported by National Funds through FCT – Fundacao para a Ciencia e Tecnologia, projects Pest-OE/MAT/UI0006/2013 (CEAUL) and UID/MAT/00297/2013 (CMA/NOVA.ID.FCT).
Nunes, Sandra +2 more
openaire +3 more sources
Social context prevents heat hormetic effects against mutagens during fish development
FEBS Letters, EarlyView.This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere +5 more
wiley +1 more source
FEBS Letters, EarlyView.Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke +2 more
wiley +1 more source
Marker effects and examination reliability: a comparative exploration from the perspectives of generalizability theory, Rasch modelling and multilevel modelling [PDF]
, 2013 This study looked at how three different analysis methods could help us to understand rater effects on exam reliability. The techniques we looked at were: generalizability theory (G-theory) item response theory (IRT): in particular the Many-Facets ...
Baird, Jo-Anne +4 more
core
FEBS Letters, EarlyView.The enzyme 5‐lipoxygenase (5‐LOX) catalyzes the first step in the biosynthesis of leukotrienes (LTs) involved in inflammatory pathophysiology. After cellular stimulation, 5‐LOX translocates to the nucleus, interacting with the 5‐LOX‐activating protein (FLAP) to form LTA4 from arachidonic acid (AA).
Erik Romp +5 more
wiley +1 more source
Doing less but getting more: Improving forced-choice measures with Item Response Theory [PDF]
, 2010 Forced-choice tests, despite being resistant to response biases and showing good operational validities, have psychometric problems if scored traditionally. These questionnaires are generally longer than their normative counterparts, and more cognitively
Brown, Anna
core
Relationship between connectedness with nature and environmental beliefs
Innoeduca, 2019 Connectedness to nature is defined as a feeling of belonging to natural environment. Studies over relationship between connectedness and environmental beliefs from the New Paradigm Environmental Scale, show low-mean correlation values.
Antonio Matas Terrón
doaj +1 more source
FEBS Letters, EarlyView.UDP‐glucuronic acid 4‐epimerase (UGAepi) catalyzes NAD+‐dependent interconversion of UDP‐glucuronic acid (UDP‐GlcA) and UDP‐galacturonic acid (UDP‐GalA) via C4‐oxidation, 4‐keto‐intermediate rotation, and C4‐reduction. Here, Borg et al. examined the role of the substrate's carboxylate group in the enzymic mechanism by analyzing NADH‐dependent reduction
Annika J. E. Borg +2 more
wiley +1 more source