Results 81 to 90 of about 6,613,399 (293)
Examining the impact of violations of local item independence assumption on test equating methods
International Journal of Assessment Tools in EducationThis study investigates the impact of violating the local item independence assumption by loading certain items onto a second dimension on test equating errors in unidimensional and dichotomous tests.
Şeref Tan, Mehmet Fatih Doğuyurt
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, 2021 This is a sample submission generated by Vireo to test the repository deposit features.Test ...
Submitter, Test
core
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Penyetaraan (Equating) Ujian Akhir Sekolah Berstandar Nasional (UASBN) Dengan Teori Tes Klasik
Jurnal Pendidikan dan Kebudayaan, 2011 Since the enactment of the National Standard School Final Examination (UASBN) in school year 2007/2008, the province is authorized to construct exam questions based on the same lattice issued BSNP.
Arniati Prasedyawati Herkusumo
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The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
FEBS Letters, EarlyView.Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
wiley +1 more source
Practical Implementation of Test Equating Using R
, 2020 Test equating methods are widely used in order to make comparable different test forms administered at different occasions to different test takers. Although software for test equating is currently available, in this paper we focus the attention on four ...
Wiberg, Marie, +5 more
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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
KARAKTERISTIK METODE PENYETARAAN SKOR TES UNTUK DATA DIKOTOMOS
Jurnal Penelitian dan Evaluasi Pendidikan, 2013 Penelitian ini bertujuan untuk menemukan: 1) akurasi estimasi parameter item pada test equating menggunakan metode Item Characteristic Curve (ICC). 2) sensitivitas metode linear yang terdiri atas Tucker - Levine score method dan Levine true score method ...
Nonoh Siti Aminah
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