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경사 충돌하는 긴 관통자에 대한 비행판재의 방호성능 수치해석
유요한(Yo-Han Yoo) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
The protection capability of steel flying plates against a tungsten heavy alloy long rod penetrator was<br/> simulated using NET3D code. The major variables considered in this work includes penetrator’s initial<br/> velocity (1.5~2.5 km/s), speed of the plates moving away from each other (0.2~0.5 km/s), and thickness ratios<br/> of upper to lower plates, i.e., 5/0, 3.3/1.7, 2.5/2.5, 1.7/3.3, and 0/5. Based upon the residual kinetic energy of<br/> the penetrator after passing through the flying plate system and deformation characteristics of plates, in<br/> general, the protection capability of the flying plate system increased with an increase in the ratio of lower<br/> plate thickness. This implied that the motion of the lower plate was more important than that of the upper one<br/> for an efficient disturbance to the progress of the penetrator. Such a trend was shown to be best exploited<br/> when the relative velocity between the penetrator and the lower plate was appropriate. As the velocity of the<br/> penetrator and flying plates increased, width and height of the penetration hole generated in the flying plates<br/> increased, thereby reducing the residual kinetic energy of the penetrator. A design guideline for an effective<br/> flying plate protection structure was proposed based on the simulation results.
논문 : 제주 토착종교와 외래종교의 충돌과 질서 형성 과정에 관한 연구; 개종주의(Proselytism) 비교 전략을 중심으로
유요한 ( Yo Han Yoo ) 서울대학교 종교문제연구소 2012 종교와 문화 Vol.0 No.22
Comparative strategies of proselytizing religions should be noted in understanding religious topography of Jeju-Do. Religions in Jeju-Do have compared themselves with others and have articulated both commonalities and differences. Religions from outside have tried to find common elements between themselves and the native religion or preexisting religious system, exploiting the analogical concepts to make themselves look familiar to the native people. In addition, the imported religions in Jeju-Do have recognized at least some "partial truth" in preexisting religions and have appropriated this partial truth for the rhetoric of proselytizing. In one way or another, they have recognized the importance of some native rituals which were not easily separable from the people. Confucianism and Buddhism have accepted some ritual processes of shamanistic religion into their own; Catholicism has approved of some native or Confucian rituals which it used to reject and criticize harshly; even some contemporary Protestants recognize the importance of accommodating or imitating traditional rituals. Religions trying to convert people to their faith have often appreciated other religions and accepted other religions` elements that may harmonize with their own ideas and practices. Simultaneously, however, religions of proselytism never failed to articulate their uniqueness that they thought the others could not rival. Other religions` partial truth and limited value showed the sharp contrast with the complete truth and value of proselytizing religions. They have not regarded the others as providing the proper way of keeping the order of the universe or attaining salvation of human beings. Nor have they acknowledged the full value of the others. They have confirmed their superiority or even supremacy over the other religions. It is a part of the comparative strategy of proselytism that religions in Jeju-Do not only recognize virtues of other religions and commonalities between religions but also articulate their own uniqueness and superiority.
한국 현대소설에서 찾는 신화의 유산: 황석영의 『바리데기』 와 신경숙의 『엄마를 부탁해』 를 중심으로
유요한 ( Yo Han Yoo ) 서울대학교 종교학연구회 2014 宗敎學硏究 Vol.32 No.-
This article articulates legacies of religious myths that exist In Korean modern novels by analyzing two bestseller Korean novels of this century, Sok-Yong Hwang``s Prjncess Barj and Kyung-Sook Shin``s Please Look After Mom. In Pnncess Bari Hwang presents ideas of the sacred that came from Korean traditional shamanistic myths, without having contemporary secular readers feel awkward about them. He depicts a model of the heroine who overcomes her own pain, is born again as a new being, and shoulders the suffering of the whole world. Bari is the heroine who stands against pain and absurdity of the world, asks the reason for them, and gropes for justice and peace. Unlike heroes or heroines with transcendental power in traditional religious myths who are often worshiped, the main character of the modern myth Hwang created is based on a universal humanism: a savior heroine who suffers and sheds tears for other people. Shin``s Please Look After Mom reaffirms Eliade``s argument that individual mothers have the image of universal mother or the mother goddess who is the origin of life to which every human being seeks to return. The "Mom" of this novel is described as the source of life and fertility, just like the mother earth in traditional myths. The Mom also longs to return to her own mother when she dies, demonstrating that the mythic idea that dying is returning to the mother earth is still present. When the main character talks in whispers to the statue of the mother Mary who embraces her dead son, the common mythic image of the universal mother is reemphasized.