Cheng, R. , Liu, J. , Hao, L. and Wu, D. (2026) On the Application of the Infinitesimal Method to Two Categories of Problems in College Physics. Open Journal of Social Sciences, 14, 378-389. doi: ...

Randomized controlled trials are clinical trials in which at least two interventions — the test treatment and a control treatment — are simultaneously evaluated in two or more arms of the trial, with ...