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회전안정탄약의 비행운동 모사장치에 대한 실험적·수치해석적 연구
이영기,박성택,송이화,최민수,Lee, Youngki,Park, Sungtaek,Song, Yihwa,Choi, Minsu 한국군사과학기술학회 2015 한국군사과학기술학회지 Vol.18 No.6
A gas gun system to replicate the flight motions of large caliber spin-stabilized ammunition has been investigated experimentally and numerically. The system is specially designed to study aerodynamic characteristics and dynamics of a flight body ejected from a cargo shell or a subsonic projectile itself at up to 2,000 rpm and 100 m/s. Raynolds-averaged Navier-Stokes equations with a overset mesh technique and 6-DOF dynamics were solved to decide the chamber pressure according to the muzzle velocity input by users. The predicted velocity values show less than 6 % of discrepancies compared to experimental data. The system has successfully been tested for the simulation of deployment of a parafoil for a 155 mm gun-launched projectile.
SWOT 방법에 의한 웨어하우스의 정보시스템 전략 분석
프리스카 페르디난드(Friska Natalia Ferdinand),박성택(Sungtaek Park),김태운(Taioun Kim) 대한산업공학회 2009 대한산업공학회 추계학술대회논문집 Vol.2009 No.10
Increasingly, supply chain is becoming an essential feature of competitive firms. The big issue in the SCM is efficient flows of information and materials between value chains. Recently, Internet plays a major role for the infrastructure in the SCM. Additionally, the contemporary Internet is a kind of knowledge bazaar. Thus, the enterprise knowledge management aims to capture and express huge tacit knowledge in the Internet into explicit form to be used in the company. The purpose of this paper is to analyze the strategy of information system in the warehouse. The abstract knowledge structure is analyzed using enterprise knowledge cloud. The relationship between supplier, distributor and customer is described using UML (Unified Modeling Language). In order to gain the suitable strategy for wholesaler, the SWOT (Strength, Weakness, Opportunity, and Threat) analysis is adopted. The score of SWOT is calculated based on the questionnaires whose participants are the staff of the company.