Results 61 to 70 of about 1,109,799 (314)

A Comparison of Classical and Modern Measures of Internal Consistency

open access: yesFrontiers 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

Emergent matter from 3d generalised group field theories

open access: yes, 2010
We identify classical solutions of a generalised group field theory model in 3 dimensions, and study the corresponding perturbations, deriving their effective dynamics. We discuss their interpretation as emergent matter fields. This allows us, on the one
Di Mare, Alessandro, Oriti, Daniele
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Aplikasi Model RASCH dalam Pengujian Alat Ukur Kesehatan Mental di Tempat Kerja

open access: yesPsikoislamika, 2015
This research aims to examine the validity and reliability of mental health scale in the workplace by using the Rasch model approach as well as compare the results of analysis with classical test theory approach.
Rahmat Aziz
doaj   +1 more source

Classical-Quantum Coexistence: a `Free Will' Test

open access: yes, 2012
Von Neumann's statistical theory of quantum measurement interprets the instantaneous quantum state and derives instantaneous classical variables. In realty, quantum states and classical variables coexist and can influence each other in a time-continuous ...
Carmichael H   +22 more
core   +1 more source

Some procedures for computerized ability testing [PDF]

open access: yes, 1989
For computerized test systems to be operational, the use of item response theory is a prerequisite. As opposed to classical test theory, in item response models the abilities of the examinees and the properties of the items are parameterized separately ...
Linden, Wim J. van der   +1 more
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Random Factors in IOI 2005 Test Case Scoring

open access: yesInformatics in Education, 2006
We examine the precision with which the cumulative score from a suite of test cases ranks participants in the International Olympiad in Informatics (IOI).
Gordon CORMACK
doaj   +1 more source

Towards the Fundamental Quantum Limit of Linear Measurements of Classical Signals [PDF]

open access: yes, 2017
The quantum Cram\'er-Rao bound (QCRB) sets a fundamental limit for the measurement of classical signals with detectors operating in the quantum regime.
Adhikari, Rana X   +4 more
core   +4 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS 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

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