Results 71 to 80 of about 5,224,671 (298)
An application of item response theory to psychological test development
Psicologia: Reflexão e Crítica, 2016 Item response theory (IRT) has become a popular methodological framework for modeling response data from assessments in education and health; however, its use is not widespread among psychologists. This paper aims to provide a didactic application of IRT
Cristian Zanon +3 more
doaj +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
Test of the Linear-No Threshold Theory: Rationale for Procedures
Dose-Response, 2005 A tightly reasoned justification is presented for the procedures used in our test of the linear-no threshold theory of radiation carcinogenesis by comparing lung cancer rates with average radon exposure in U.S. counties.
Bernard L. Cohen
doaj +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
A Comparison of Classical and Modern Measures of Internal Consistency
Frontiers in Psychology, 2019 Three measures of internal consistency – Kuder-Richardson Formula 20 (KR20), Cronbach’s alpha (α), and person separation reliability (R) – are considered.
Pasquale Anselmi +2 more
doaj +1 more source
Non-perturbative Heavy Quark Effective Theory: a test and its matching to QCD
, 2004 We give an introduction to the special problems encountered in a treatment of HQET beyond perturbation theory in the gauge coupling constant. In particular, we report on a recent test of HQET as an effective theory for QCD and discuss how HQET can be ...
Sommer, Rainer
core +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Jurnal EdunitroThis study aims to determine how much the results of the theory of vocational competency tests are related to the results of the vocational practice competency tests of TITL students at SMK Negeri 2 Manado.
Robyn Koloway +4 more
doaj +1 more source
Finiteness theorems in stochastic integer programming
, 2005 We study Graver test sets for families of linear multi-stage stochastic integer programs with varying number of scenarios. We show that these test sets can be decomposed into finitely many ``building blocks'', independent of the number of scenarios, and ...
Aschenbrenner, Matthias +1 more
core +2 more sources
Deconfinement: Concept, Theory, Test [PDF]
, 1995 The study of strongly interacting matter is a fascinating subject for a variety of reasons. It is needed to describe the first few microseconds in the evolution of our universe, and it provides the equation of state for stellar matter at high density.
openaire +2 more sources