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Peer reviewed
Direct linkLiu, Boquan; Polce, Evan; Sprott, Julien C.; Jiang, Jack J. – Journal of Speech, Language, and Hearing Research, 2018
Purpose: The purpose of this study is to introduce a chaos level test to evaluate linear and nonlinear voice type classification method performances under varying signal chaos conditions without subjective impression. Study Design: Voice signals were constructed with differing degrees of noise to model signal chaos. Within each noise power, 100…
Descriptors: Acoustics, Monte Carlo Methods, Correlation, Test Validity
Aslanides, J. S.; Savage, C. M. – Physical Review Special Topics - Physics Education Research, 2013
We report on a concept inventory for special relativity: the development process, data analysis methods, and results from an introductory relativity class. The Relativity Concept Inventory tests understanding of relativistic concepts. An unusual feature is confidence testing for each question. This can provide additional information; for example,…
Descriptors: Physics, Science Tests, Scientific Concepts, Confidence Testing
