Results 121 to 130 of about 13,961,135 (286)

Comparison of item response theory ability and item parameters according to classical and Bayesian estimation methods

International Journal of Assessment Tools in Education
This research aims to compare the ability and item parameter estimations of Item Response Theory according to Maximum likelihood and Bayesian approaches in different Monte Carlo simulation conditions.
Ergül Demir, Eray Selçuk
doaj   +1 more source

MIXNO: a computer program for mixed-effects nominal logistic regression [PDF]

MIXNO provides maximum marginal likelihood estimates for mixed-effects nominal logistic regression analysis. These models can be used for analysis of correlated nominal response data, for example, data arising from a clustered or longitudinal design. For
Donald Hedeker
core  

Identification and characterisation of calcitonin receptor isoforms expressed in glioblastoma derived glioma stem and U‐87 MG cells

FEBS Open Bio, EarlyView.
Glioblastoma cells express calcitonin receptor variants (CT receptor isoforms) that may help them survive stress. Using qPCR, transcript‐specific long‐read nanopore sequencing, immunofluorescence co‐localisation and comparative sequence analysis, this study identifies a novel alternatively spliced CALCR transcript that encodes the CTb receptor isoform ...
Pragya Gupta, Sebastian GB Furness, Tahereh Gharbi, Ric De Paoli‐Iseppi, Shweta S. Joshi, Michael Clark, David L. Hare, Peter Wookey   +7 more
wiley   +1 more source

Item Dynamic Incremental Reduction Algorithm of Item Response System with Decision Item Based on Rough Set Theory

, 2011
[[abstract]]Rough Set Theory is a new mathematical tool which deals with vagueness and uncertainty. Compared with other traditional theories, rough set theory does not need any data or extra informational hypotheses.
Chou Shih-chung
core  

BCG vaccination potentiates oxidative phosphorylation in neonatal myeloid‐derived suppressor cells

FEBS Open Bio, EarlyView.
BCG vaccination enhances oxidative phosphorylation in neonatal MDSCs, impairing their immunosuppressive function. It upregulates electron transport chain genes and mitochondrial activity, increasing ATP and oxygen consumption. Pharmacological OXPHOS inhibition partially restores suppressive capacity, confirming causality.
Yingying Chen, Hui Li
wiley   +1 more source

Smooth Information Criterion for Regularized Estimation of Item Response Models

Algorithms
Item response theory (IRT) models are frequently used to analyze multivariate categorical data from questionnaires or cognitive test data. In order to reduce the model complexity in item response models, regularized estimation is now widely applied ...
Alexander Robitzsch
doaj   +1 more source

A polytomous nonlinear mixed model for item analysis

, 2003
textThe present study attempted to connect the framework of item response theory (IRT) within the more comprehensive and well-known statistical frameworks of the generalized linear mixed model and the nonlinear mixed model (NLMM).
Shin, Seon-hi
core  

The C‐terminal truncated splicing variant of NK1R negatively modulates substance P‐stimulated NK1R signaling

FEBS Open Bio, EarlyView.
The neurokinin 1 receptor exists as full‐length (NK1L) and C‐terminally truncated (NK1S) splice variants. We show that NK1S heterodimerizes with NK1L, impairing Gαq coupling and Ca2+ mobilization while enhancing β‐arrestin1 recruitment. NK1S suppresses substance P‐driven gene expression and cell migration, revealing NK1S as an endogenous biased ...
Lan Phuong Nguyen, Duc Trung Nguyen, Minyoung Cho, Jihun Kim, Soyeon In, Thai Uy Nguyen, Sunghoon Hurh, Beom Jin Park, Jong‐Ik Hwang   +8 more
wiley   +1 more source

Development and application of the Meal and Snack Assessment (MESA) quality scale for children and adolescents using item response theory

Nutrition Journal
Background Meals differ in terms of food items and nutritional quality. The aim of the present study was to propose a scale to measure the meals quality of schoolchildren according to food processing degree, perform a preliminary evaluation of the scale ...
Stella Lemke, Dalton Francisco de Andrade, Patrícia de Fragas Hinnig, Silvio Aparecido da Silva, Silvana Ligia Vincenzi, Denise Miguel Teixeira Roberto, Adriana Soares Lobo, Francilene Gracieli Kunradi Vieira, Patricia Faria Di Pietro, Maria Alice Altenburg de Assis   +9 more
doaj   +1 more source

Identification and characterization of a gene conferring stress resistance in Escherichia coli and cyanobacteria

FEBS Open Bio, EarlyView.
Functional screening identified PcSyn14890, a cyanobacteria‐specific protein that enhances growth and stress resistance in E. coli and Synechocystis PCC6803. Although we expected it to function as a molecular chaperone, it was unable to protect against thermal aggregation of GAPDH.
Akiyo Yamada, Takaaki Tanaka, Manaka Uehara, Keigo Nakano, Ken Morishima, Rintaro Inoue, Masaaki Sugiyama, Masafumi Yohda   +7 more
wiley   +1 more source