Results 81 to 90 of about 7,583,772 (289)
The Impact of Equating on Detection of Treatment Effects [PDF]
, 2019 Equating makes it possible to compare performances on different forms of a test. Three different equating methods (baseline selection, subgroup, and subscore equating) using common-item item response theory equating were examined for their impact on ...
Lu, Zhenqiu +3 more
core +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
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
A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma
FEBS Letters, EarlyView.Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos +9 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
doaj +1 more source
Testing for Autocorrelation in Systems of Equations
, 2007 This paper deals with the problem of testing for the presence of autocorrelation in a system of general linear models (Seemingly Unrelated Regressions, SUR) when the model is formulated as a vector autoregression (VAR) with exogenous variables. The solution presented in this paper is a generalization of the h-statistic for the single equation single ...
openaire +5 more sources
, 2018 본 연구의 목적은 공통문항 비동등집단 설계에서 모수와 비모수 부트스트랩 방법을 이용하여 동등화 표준오차를 추정하고 검사동등화 방법들을 비교하는 것에 있다. 비교의 조건으로는 검사 난이도 수준, 검사간 난이도 차이, 피험자 능력 차이, 모수모형 조건 등이 고려되었으며, 동등화 방법으로는 빈도추정 동백분위동등화, Tucker 동등화, Braun-Holland 동등화 등이 비교되었다. 연구의 결과는 이 연구의 모든 실험조건에서 빈도추정 동백분위동등화 방법이
김현철, 김화영
core +1 more source
Smaller is better: nanobodies meet NMR
FEBS Letters, EarlyView.Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
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
doaj
, 1982 The chapters in this book give a detailed and thorough discussion of test equating from many different points of view. It should be a valuable reference on test equating for a broad audience interested in many aspects of tests and testing -- educational ...
Holland, Paul W.
core