Results 41 to 50 of about 1,095,010 (241)

Unidimensionality in Rasch Models: Efficient Item Selection and Hierarchical Clustering Methods Based on Marginal Estimates [PDF]

open access: yesarXiv, 2023
A strong tool for the selection of items that share a common trait from a set of given items is proposed. The selection method is based on marginal estimates and exploits that the estimates of the standard deviation of the mixing distribution are rather stable if items are from a Rasch model with a common trait.
arxiv  

Invariance of Comparisons: Separation of Item and Person Parameters beyond Rasch Models [PDF]

open access: yesarXiv, 2023
The Rasch model is the most prominent member of the class of latent trait models that are in common use. The main reason is that it can be considered as a measurement model that allows to separate person and item parameters, a feature that is referred to as invariance of comparisons or specific objectivity.
arxiv  

Hybridisation in two-band Hubbard models with different bandwidths [PDF]

open access: yesJ. Phys.: Condens. Matter 19, 436206 (2007), 2007
We investigate the orbital selective Mott transition in two-band Hubbard models by means of the Gutzwiller variational theory. In particular, we study the influence of a finite local hybridisation between electrons in different orbitals on the metal-insulator transition.
arxiv   +1 more source

Making Better Tests with the Rasch Measurement Model [PDF]

open access: yesInSight, 2018
This study had two aims. The first was to explain the process of using the Rasch measurement model to validate tests in an easy-to-understand way for those unfamiliar with the Rasch measurement model.
Omar Karlin, Sayaka Karlin
doaj   +2 more sources

ReHabgame A non-immersive virtual reality rehabilitation system with applications in neuroscience [PDF]

open access: yesHeliyon. 2018 Feb 12;4(2):e00526, 2018
This paper proposes the use of a non-immersive virtual reality rehabilitation system ReHabgame developed using Microsoft Kinect and the Thalmic Labs Myo gesture control armband. The ReHabgame was developed based on two third-person video games that provide a feasible possibility of assessing postural control and functional reach tests.
arxiv   +1 more source

Applicability of Item Response Theory to the Korean Nurses' Licensing Examination [PDF]

open access: yesJournal of Educational Evaluation for Health Professions, 2005
To test the applicability of item response theory (IRT) to the Korean Nurses' Licensing Examination (KNLE), item analysis was performed after testing the unidimensionality and goodness-of-fit.
Geum-Hee Jeong, Mi Kyoung Yim
doaj   +1 more source

Pemodelan RASCH terhadap Soal Konsep Geometri dengan Pembelajaran Blended Learning di Sekolah Dasar [PDF]

open access: yes, 2023
Penelitian ini bertujuan untuk menganalisis kemampuan pemahaman konsep geometri siswa sekolah dasar yang dilaksanakan dengan model pembelajaran blended learning melalui pemodelan RASCH.
Lidinillah, Dindin Abdul Muiz   +2 more
core   +2 more sources

Analysis of biology midterm exam items using a comparison of the classical theory test and the Rasch model

open access: yesJPBI (Jurnal Pendidikan Biologi Indonesia)
In biology learning, test instruments are essential for assessing students' understanding of complex concepts. A test instrument is a crucial factor in learning evaluation; however, its implementation remains minimal.
Tanti Priyani, Bowo Sugiharto
doaj   +1 more source

Investigating psychometric properties of the arm activity measure – Thai version (ArmA-TH) sub‐scales using the Rasch model

open access: yesBMC Medical Research Methodology, 2021
Background This study investigated the ArmA-TH sub-scale measurement properties based on item response theory using the Rasch model. Methods Patients with upper limb hemiplegia resulting from cerebrovascular and other brain disorders were asked to ...
Montana Buntragulpoontawee   +6 more
doaj   +1 more source

α‐Aminierung von 1,3‐Dicarbonylverbindungen und ähnlich‐reaktiven Enolatvorstufen mit Ammoniak unter oxidativen Bedingungen

open access: yesAngewandte Chemie, EarlyView.
Die Verwendung von Ammoniak in Kombination mit Hypochloriten als einfache Oxidationsmittel unter Phasentransferbedingungen ermöglicht die direkte oxidative α‐Aminierung von reaktiven Enolatvorstufen wie cyclischen β‐Ketoestern, Oxindolen sowie Malonitrilen und Malonaten in guten bis exzellenten Ausbeuten.
Christopher Mairhofer   +6 more
wiley   +1 more source

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