조정가능한 M/G/1 대기모형에 삼변수 Min(N,T,D)운용방침이 적용될 때 busy period기대값의 상한과 하한 유도

Using the known result of the expected busy period for the triadic Min (N, T, D) operating policy applied to a controllable M/G/1 queueing model, its upper and lower bounds are derived to approximate its corresponding actual value. Both bounds are represented in terms of the expected busy periods for the dyadic Min (N, T), Min (N, D) and Min (T,D) and simple N, T and D operating policies. All three input variables N, T and D are equally contributed to construct such bounds for better approximations.