실천공학 교육 방법론 : 공학교육에서 귀납법 추론을 위한 변수 통제 = Variable Control in Inductive Inference for Engineering Education

다국어 초록 (Multilingual Abstract)

The variable control in the inductive inference for the confirmation and verification when the experimental data are collected is studied by applying the principle of probability inference. The control in engineering experiments is to protect any effect by of inter-vening variable except primary independent variable on the dependent variable. By the special condition the possibility for develop-ing a phenomenon will be maximized; otherwise, by the extraneous condition the possibility for developing a phenomenon will be minimized. By doing so, the control may provide insurance for the causal relationship between the certain prior event (independent variable) and the post-event (the dependent variable). Some experiments by using both elliptical trainer and tread mill under the variable control are performed in order to find the relations between the energy expenditure, the respiratory exchange ratio (RER), and the heart rate (HR) against the exercise speed.