Results 81 to 90 of about 15,432 (253)
, 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
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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
Heun equation and Painlevé equation
Rokko Lectures in Mathematics, 2005 17 pages, based on the talk given at the Workshop "Studies on elliptic integrable systems" (Kyoto, November 2004)
openaire +2 more sources
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
Output.xlsx file from fixed equating procedure.
, 2021 Output.xlsx file from fixed equating procedure.
Kane Meissel (11548130) +5 more
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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
plink: An R Package for Linking Mixed-Format Tests Using IRT-Based Methods [PDF]
The R package plink has been developed to facilitate the linking of mixed-format tests for multiple groups under a common item design using unidimensional and multidimensional IRT-based methods.
Jonathan P. Weeks
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Equating tests under the graded response model
, 1992 The Stocking and Lord (1983) procedure for computing equating coefficients for tests having dichotomously scored items is extended to the case of graded response items.
Baker, Frank B.
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FEBS Letters, EarlyView.Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana +3 more
wiley +1 more source
Investigating Group Invariance of Equating Results [PDF]
, 2017 In this study, it was investigated that Item Response Theory (IRT) equating results whether or not group invariant. Group invariance of equating functions means that equating is same for everyone in the population.
Gübeş, Neşe, Kalecioğlu, Hülya
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