Results 71 to 80 of about 1,114,312 (344)

Estimasi True Score pada Second Order Unidimensional Data: Sebuah Studi Simulasi Monte Carlo Tentang Dampak Panjang Tes, Tingkat Kesukaran dan Daya Pembeda Item

open access: yesJurnal Pengukuran Psikologi dan Pendidikan Indonesia, 2019
Tujuan penelitian ini adalah untuk mengetahui apakah terdapat perbedaan atau bias pada data unidimensional second order namun sering diperlakukan sebagai unidimensional hanya pada tingkat pertama atau first order, serta mengetahui sejauh mana pengaruh ...
Puti Febrayosi
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

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

open access: yesFrontiers 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   +5 more
doaj   +1 more source

Statistical Bias in Maximum Likelihood Estimators of Item Parameters [PDF]

open access: yesPsychometrika, 1982
Asymptotic formulas are derived for the bias in the maximum likelihood estimators of the item parameters in the logistic item response model when examinee abilities are known. Numerical results are given for a typical verbal test for college admission.
openaire   +1 more source

Equality of Voice: Towards Fair Representation in Crowdsourced Top-K Recommendations [PDF]

open access: yes, 2018
To help their users to discover important items at a particular time, major websites like Twitter, Yelp, TripAdvisor or NYTimes provide Top-K recommendations (e.g., 10 Trending Topics, Top 5 Hotels in Paris or 10 Most Viewed News Stories), which rely on ...
Chakraborty, Abhijnan   +4 more
core   +5 more sources

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Bias and Linking Error in Fixed Item Parameter Calibration

open access: yesAppliedMath
The two-parameter logistic (2PL) item response theory (IRT) model is frequently applied to analyze group differences for multivariate binary random variables.
Alexander Robitzsch
doaj   +1 more source

The interaction between unit and item nonresponse in view of the reverse cooperation continuum [PDF]

open access: yes
The paper addresses two questions. First, is item nonresponse (INR) a precursor of panel attrition (UNR), as predicted by the theory of a latent cooperation continuum, or is the interrelation of another type?
Oliver Serfling
core  

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