Results 61 to 70 of about 7,583,772 (289)

Is pseudo-equivalent groups equating via minimum discriminant information adjustment effective? Evidence from simulation and real data

open access: yesFrontiers in Education
The traditional way to linking different forms of test typically uses common (or randomly equivalent) examinees or items. When common examinees or items are unavailable due to test properties or administrative restrictions, equating with pseudo ...
Xizhen Fan   +4 more
doaj   +1 more source

Practical Implementation of Test Equating Using R

open access: yes, 2020
Test equating methods are widely used in order to make comparable different test forms administered at different occasions to different test takers. Although software for test equating is currently available, in this paper we focus the attention on four ...
Wiberg, Marie,   +5 more
core   +1 more source

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

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

Equational axioms of test algebra [PDF]

open access: yes, 1998
We have axiomatized test algebra equations and achieved a finite equational axiomatization relative to Kleene algebra. The previous section showed that the Kleene algebra component cannot be replaced by a finite set of test algebra equations.
openaire   +4 more sources

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

IRT Observed-score Kernel Equating

open access: yes, 2014
Item response theory (IRT) observed-score kernel equating is described for thenon-equivalent groups with anchor test equating design using either chain equating orpost-stratification equating.
Andersson, Björn, Wiberg, Marie
core   +2 more sources

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

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

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  

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