Results 61 to 70 of about 6,613,399 (293)

An Item Response Theory Approach to the Maintenance of Standards in Public Examinations in England [PDF]

open access: yes, 2011
Every year outcomes from public examinations in the UK rise: politicians congratulate pupils on their hard earned achievement; the media questions whether this achievement is real; those responsible for administrating the examinations defend their ...
WHEADON, CHRISTOPHER,BRIAN   +1 more
core  

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Applying Test Equating Methods

open access: yes, 2017
This book describes how to use test equating methods in practice. The non-commercial software R is used throughout the book to illustrate how to perform different equating methods when scores data are collected under different data collection designs ...
Wiberg, Marie,   +5 more
core   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Harmonizing the CBCL and SDQ ADHD scores by using linear equating, kernel equating, item response theory and machine learning methods

open access: yesFrontiers in Psychology
IntroductionA problem that applied researchers and practitioners often face is the fact that different institutions within research consortia use different scales to evaluate the same construct which makes comparison of the results and pooling ...
Miljan Jović   +3 more
doaj   +1 more source

PENGEMBANGAN DAN PENYETARAAN INSTRUMEN TES KINEMATIKA GERAK LURUS DENGAN METODE LINEAR

open access: yesJurnal Pendidikan Sains, 2017
: Implementation of asessment often takes several sets of questions. However, different tests will have a different difficulty indices even they were constructed on the same indicators.
Hafid Suyuti   +2 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

equate: An R Package for Observed-Score Linking and Equating

open access: yesJournal of Statistical Software, 2016
The R package equate contains functions for observed-score linking and equating under single-group, equivalent-groups, and nonequivalent-groups with anchor test(s) designs.
Anthony D. Albano
doaj   +1 more source

Chained Equipercentile Equating of Senior School Certificate Multiple-Choice Test Items in Chemistry

open access: yesJournal of Computer Adaptive Testing in Africa, 2022
This study investigated chained equipercentile equating of Senior School Certificate Multiple Choice Test Items in Chemistry conducted by the West African Examinations Council (WAEC), the National Examinations Council (NECO) and National Business and ...
Oluwatosin Adeosun
doaj   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

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