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이기현,Lee Ki-Hyun 한국국방경영분석학회 1976 한국국방경영분석학회지 Vol.2 No.1
As the organizational size of a military service or business increases and its management becomes complex, the success in its management depends less on static type of management but more on careful, dynamic type of management. In this thesis, an operations research technique is applied to the problems of determining optimal air traffic control rule and of optimal capacity of air base for a military air base. An airport runway is regarded as the service facility in a queueing mechanism, used by landing, low approach, and departing aircraft. The usual order of service gives priority different classes of aircraft such as landings, departures, and low approaches; here service disciplines are considered assigning priorities to different classes of aricraft grouped according to required runway time. Several such priority rules are compared by means of a steady-state queueing model with non-preemptive priorities. From the survey conducted for the thesis development, it was found that the flight pattern such as departure, law approach, and landing within a control zone, follows a Poisson distribution and the service time follows an Erlang distribution. In the problem of choosing the optimal air traffic control rule, the control rule of giving service priority to the aircraft with a minimum average waiting cost, regardless of flight patterns, was found to be the optimal one. Through a simulation with data collected at K-O O Air Base, the optimal take-off interval and the optimal capacity of aircraft to be employed were determined.
NURBS 모델링 툴을 이용한 건축형태 구성에 관한 연구
이기현 영산대학교 2003 영산논총 Vol.11 No.-
This study aims at proposing a way of using Digital technology in architectural form. NURBS-basde animation programs provide the architect with sophisticated three dimensional digital tools. For pratical application of NURBS modeling system in architectural form, this paper investigates recent project on smooth surface. Then, let us review the nurbs (non uniform raitonal b-spline) allowing the architect to work on topological surfaces with increasing levels of complexity and see how to create nurbs object by using various tools. Based on this tools, we intend to propose a basic background for using nurbs object in architectural form.