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땡처리 항공권 출현 여부를 고려한 최적 항공권 구매 전략
문경배,박희정,손재동 한국경영과학회 2019 한국경영과학회지 Vol.44 No.2
This research deals with the optimal airline-ticket purchase problem in which the buyer should make a decision on whether or not to buy sequentially appearing airline-tickets in consideration of the appearing possibility of clearance (or promotion) leading to a given deadline. We formulate this problem as a mathematical model and prove the monotonic property of the optimal decision rules with respect to clearance ticket price. Specifically, we show how the double-critical value (DRV) property may lead to two optimal thresholds when the appearing probability of clearance tickets decreases relative to the remaining time nearing the deadline. In addition, we demonstrate the effectiveness of the model with empirical analysis by using real data and game experiments.
비정밀접근시 CFIT사고 방지를 위한 일정강하율 접근방식에 관한 연구
송병흠,신현삼,문경배,Song, B.H.,Sin, H.S.,Moon, K.B. 한국항공운항학회 2005 한국항공운항학회지 Vol.13 No.4
Traditionally aircraft had descended in steps to level at the MDA(Minimum Descent Altitude) during the conduct of non-precision approach. This "de-stabilized" method of flying an instrument approach procedure is considered as a major contributing factor in CFIT(Controlled Flight Into Terrain) accident and increasing pilot workload. In the effort to reduce CFIT accident and pilot workload, VNAV(Vertical Navigation) Approach has been suggested as means to manage the vertical component of non-precision approach procedure.[1] But In the actual circumstances in Korea, VNAV has not been using to reduce them because of many restriction facts and no published VNAV chart in particular airport. Therefore we are suggesting Constant Vertical Speed Approach Method, which is required few restriction facts, and the pilots who are using this method will experience a similar method like a Glideslope during proceeding non-precision approach. Consequently, We are expecting to reduce CFIT accidents and pilot workload.