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조이상,조진수,Cho, Leesang,Cho, Jinsoo 한국교통대학교 융복합기술연구소 2015 융ㆍ복합기술연구소 논문집 Vol.5 No.1
Numerical analyses on the aerodynamic characteristics of a counter rotating axial flow fan is carried out using the frequency domain panel method. Front rotor and rear rotor blades of a counter rotating axial fan are designed by using the simplified meridional flow analysis method with the radial equilibrium equation and the free vortex design condition, according to design requirements. Performance characteristics of a counter rotating axial flow fan are estimated for the variation of design parameters such as the hub to tip ratio, the taper ratio and the solidity. Pressure losses were higher at leading edge and hub region of rotor blades. Characteristic curve of the counter rotating fan was overpredicted without consideration of viscous effect.
17세기 루터교 정통주의 루터상(Lutherbild)의 역사적 발전 과정
이상조(Sang Jo Lee) 한국기독교학회 2011 한국기독교신학논총 Vol.76 No.-
This paper aims at the development of the image of Luther in the Lutheran orthodoxy of the 17th century. The Lutheran orthodoxy of the 17th century defended their theological position using the method of the Aristotelian philosophy in the polemical controversies with the Catholics and Calvinists. They described their theological theses in its dogmatic form. Here Luther`s theology played a very important role in the construction of the Orthodox teaching building. For the Lutheran the important was of only Luther`s theology as the true Christian doctrine, that it was necessary to salvation. This led to the understanding of Luther`s teaching authority of the Church, i.e. Luther was the only teacher of the church. The personal and biographical description of Luther did not matter for the Lutheran. Instead of the personality of Luther the Lutheran viewed Luther only as a teaching authority of the Church in the polemical dispute with the opponents. This resulted in the image of Luther: "Luther as an angel of the Apocalypse" and "Luther`s legality to the Reformation." For the support of Luther`s teaching authority the Lutheran moved to approach the Apocalypse 14:6-7. According to this biblical statement God sent an angel in the history to preach the pure doctrine of the Gospel. The Lutheran identified Luther with this angel. This has led to the image of Luther as the apocalyptic angel. For the legitimacy of Luther`s teaching authority, on the other hand, the Lutheran orthodoxy also established Luther`s legality to the Reformation by his call to the ordained priesthood, while recognizing him as doctor of theology and professor at the university.
이상조 대한기계학회 1990 大韓機械學會誌 Vol.30 No.1
본 글에서는 드릴링 작업의 가공정밀도 개선방안에 관하여 살펴보았다. 그러나 이러한 결과들은 현재 산업계에서 그 필요성이 점증하고 이는 small-deep hole 드릴링에 적용하기 위하여는 앞으 로도 계속 연구가 진행되어야 하며 특히 (1) 칩의 처리 문제, (2) Burr의 처리 문제, (3) 작업 상태에서 드릴휨의 모델링 등의 분야에 대한 연구가 선행되어야 할 것이다.