Results 51 to 60 of about 15,432 (253)

A quadratic curve equating method to equate the first three moments in equipercentile equating

open access: yes, 1996
A quadratic curve test equating method for equating different test forms under a random-groups data collection design is proposed. This new method extends the linear equating method by adding a quadratic term to the linear function and equating the ...
Wang, Tianyou, Kolen, Michael J.
core   +1 more source

Comparing the methods of vertical equating for the math learning achievement tests for junior high school students

open access: yesREID (Research and Evaluation in Education), 2018
Developing the students’ mathematical ability needs to be carried out to improve the teaching process. This is very important for continuous education. This study aimed to describe: (1) the characteristics of the mathematics achievement tests for grades ...
Chairun Nisa, Heri Retnawati
doaj   +1 more source

The development of equating application for computer based in physics HOTS category

open access: yesJournal of Technology and Science Education, 2021
This study aims to develop a score equating application for computer-based school exams using parallel test kits that have 25% anchor items, the items are arranged according to the HOTS (High Order Thinking Skill) category and use a scientific approach ...
Yetti Supriyati   +2 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Evaluating accuracy and bias of different comparative judgment equating methods against traditional statistical equating

open access: yesFrontiers in Education
Traditional common-item or common-person statistical equating cannot always be used for standard maintaining or linking between test forms. In some contexts, comparative judgment (CJ) methods which capture expert judgment of quality of student work on ...
Milja Curcin, Ming Wei Lee
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

The Negative Binomial Distribution Efficiency in Finite Mixture of Semi-parametric Generalized Linear Models

open access: yesپژوهش‌های ریاضی, 2019
Introduction Selection the appropriate statistical model for the response variable is one of the most important problem in the finite mixture of generalized linear models.
Farzad Eskandari
doaj  

A General Framework for Modeling Missing Data Due to Item Selection With Item Response Theory

open access: yesMethodology
In education testing, the items that examinees receive may be selected for a variety of reasons, resulting in missing data for items that were not selected.
Paul A. Jewsbury   +2 more
doaj   +1 more source

Penyetaraan Tes UAN: MAengapa dan Bagaimana?

open access: yesCakrawala Pendidikan: Jurnal Ilmiah Pendidikan, 2010
Debates concerning what is right and what is wrong with national final examination (UAN) in Indonesia are not new. National final examination (UAN), a significant process using a test form to measure learning output, has been developed to provide ...
Sukirno Sukirno
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

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