Window 유통 제어를 가진 음성과 데이터가 집적된 패킷 통신망의 성능 분석

학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과, 1984.2, [ vi, 69 p. ; ]In this thesis, the performance of an integrated voice/data packet communication network with window flow control is investigated. The network is modeled by tandem links with a single closed chain and analyzed. The data controlled by window flow control is analyzed with a heuristic method based on the mean value analysis approach and the concept of the effective capacity. For analysis of the network where the acknowledgement delay cannot be neglected and the priority scheduling scheme is used, we use a modified mean value analysis method. Also for analysis of the network having other messages such as voice and external data, we use the M/G/1 queueing theory with different priority classes. Using these methods, we obtain iteratively various network parameter values, such as throughput, mean queue length and delay time. In addition, we investigate the network performances for different window sizes, thereby obtaining the optimal window size that maximizes the network efficiency for different traffic intensities. Finally, the characteristics of voice and data traffics in packet computer network are investigated.한국과학기술원 : 전기 및 전자공학과

두 공급자를 갖는 주문수준 재고 체계

학위논문(석사) - 한국과학기술원 : 산업공학과, 1984, [ [ii], 26, [2] p. ]This paper studies the effect of having two suppliers on the purchasing inventory system in which order-level inventory policy with constant leadtimes is adopted. An optimal ordering policy to achieve the expected minimum total inventory cost is found by utilizing the equivalence relations. Sensitivity analysis on the system parameters is done through example problems.한국과학기술원 : 산업공학과