Results 81 to 90 of about 3,022,639 (245)

Automated Parallel Test Forms Assembly Using Integer Programming With Logistic Item Exposure Penalties to Balance the Number of Test Forms While Minimizing Item Exposure Bias

IEEE Access
Recent studies have explored several techniques using AI technologies to assemble numerous parallel test forms, for which each form has equivalent measurement accuracy but each has a different set of items from the item pool.
Kazuma Fuchimoto, Maomi Ueno
doaj   +1 more source

Unbiased Analysis of Item-Specific Multi-Voxel Activation Patterns Across Learning

Frontiers in Neuroscience, 2018
Recent work has highlighted that multi-voxel pattern analysis (MVPA) can be severely biased when BOLD response estimation involves systematic imbalance in model regressor correlations.
Hannes Ruge, Eric Legler, Theo A. J. Schäfer, Katharina Zwosta, Uta Wolfensteller, Holger Mohr   +5 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

‘Risk of bias’ graph: Review authors’ assessments for each risk of bias item presented as percentages across all included studies.

, 2019
‘Risk of bias’ graph: Review authors’ assessments for each risk of bias item presented as percentages across all included studies.
Benedict J. Kolber (275430), Anna M. Polaski (6191567), Matthew C. Kostek (204785), Amy L. Phelps (6191570), Kimberly A. Szucs (6191573)   +4 more
core   +1 more source

Linking Error Estimation in Fixed Item Parameter Calibration: Theory and Application in Large-Scale Assessment Studies

Foundations
In fixed item parameter calibration (FIPC), an item response theory (IRT) model is estimated with item parameters fixed at reference values to estimate the distribution parameters within a specific group.
Alexander Robitzsch
doaj   +1 more source

Studi Tentang Dampak Dari Multidimensionalitas Butir Soal Terhadap Estimasi True Skor Dengan Pendekatan Model Bifaktor

Jurnal Pengukuran Psikologi dan Pendidikan Indonesia, 2019
Penelitian ini merupakan penelitian simulasi dimana yang menjadi fokus dalam penelitian ini adalah banyaknya faktor, item dan responden dengan replikasi 50 kali.
Nursakinah Oktaviana Sasmita
doaj   +1 more source

The influence of diversity on the measurement of functional impairment: An international validation of the Amsterdam IADL Questionnaire in eight countries

Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, 2020
Introduction To understand the potential influence of diversity on the measurement of functional impairment in dementia, we aimed to investigate possible bias caused by age, gender, education, and cultural differences. Methods A total of 3571 individuals
Mark A. Dubbelman, Merike Verrijp, David Facal, Gonzalo Sánchez‐Benavides, Laura J.E. Brown, Wiesje M. vander Flier, Hanna Jokinen, Athene Lee, Iracema Leroi, Cristina Lojo‐Seoane, Vuk Milošević, José Luís Molinuevo, Arturo X. Pereiro Rozas, Craig Ritchie, Stephen Salloway, Gemma Stringer, Stelios Zygouris, Bruno Dubois, Stéphane Epelbaum, Philip Scheltens, Sietske A.M. Sikkes   +20 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Risk of bias graph: the authors’ judgments about each risk-of-bias item presented as percentages across all included studies.

, 2014
Risk of bias graph: the authors’ judgments about each risk-of-bias item presented as percentages across all included studies.
Jiandong Lin (138764), Xiaoli Chen (102563), Felinda Ariani (499391), Ying Li (38224), Huibin Huang (486690)   +4 more
core   +1 more source