• 한국자동차공학회논문집
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• 제15권4호
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• pp.115-123
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• 2007

In this paper, an analytical model is developed to describe the dynamic characteristics of a roller bearing. In order to obtain accurate dynamic response of roller bearing, each roller is modeled as a rigid body, which has radial and axial movement and rotational constraints. Beam element between outer race segments is used to consider flexibility of outer race. Beam deflection is calculated from beam forces and used for contact between roller and outer race. The efficient contact search kinematics and algorithms in the context of the compliance contact model are implemented to detect the interactions between roller and race for the sake of speedy and robust solutions. The numerical results are validated with another analysis results which are calculated using waviness condition. Increasing rollers, dynamic responses are compared with each other. In order to confirm dynamic behavior and nonlinear characteristic of roller bearing, Poincare map is used.

• 비교문화연구
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• 제29권
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• pp.153-176
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• 2012

This study focused on concretely how minority group's attitude accepting han-zu's culture changes. In the past, minority group's culture and han-zu's culture were acculturated spontaneously, not forcibly. But as the people's republic of china was founded and control of chinese government was intensified, control and interference of minority group area became aggressive, and acculturation became compulsory. However, after chinese economic reform, by economic affluence and modernization and urbanization according to economic affluence, acculturation of minority group's culture and han-zu's culture is changing from forced acculturation to spontaneous acculturation. Still there are some areas where mutual friction lasts because of forced acculturation. But except some areas the stream is changing rapidly to spontaneous acculturation. In the text, this study investigated process and present state of acculturation focused on hui-zu that implemented aggressive acceptance of han-zu's culture relatively early. Then this study investigated yi-zu society and cultural change focused on their spontaneous acculturation. In the modern society setting a high value on convenience and personal happiness rather than ideology and value, value of race becomes less attractive to young people of minority group who know modern civilization and convenience of city. In this respect, maybe hui-zu society is future of yi-zu society and minority group society.

• 복식
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• 제51권5호
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• pp.95-111
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• 2001

The purpose of this study is to analyze the costumes of the master in Yuantaizi(원대자) tumulus murals and to examine the relation to the costumes of Koguryo(고구려). The Master appeared in Yuantaizi Tumulus Murals wear Wuguan(무관), Pingshangze(평상장) and Pao(포) These costumes were used as chaofu(조복) by Han race(한족) at that time. It is believed that Yuantaizi tumulus belongs to a tomb of Qian Yan(전연). So we can conclude that Qian Yan accepted costume systems of Han race. And similar costumes appear in Tumulus Murals of Koguryo built around Pyungyang(평양) and Anak(안악) in 4∼5 century. Especially the master's costumes of Anak Tomb No.3(안악3호분) are nearly the same as Yuantaizi's. Maybe it is closely related to the fact that the master of Anak Tomb No.3 is Dongsu (동수) who defected from Qian Yan.

• 한국의류학회지
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• 제36권7호
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• pp.778-789
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• 2012

The characteristics of ancient gagye (the cubic hair style which added wigs or other materials to hair) that appeared in mural paintings were compared between Pyongyang and Jian in Goguryeo and the midlands, the northwest region, and the northeast region in China for the same period (Han to Weijin, and Northern and Southern Dynasties). Gagye in Korea and China was classified into circle type, hat type, high-bun type, and multi-bun type; in addition, Han elements, northern race elements, Goguryeo elements, and uniqueness were compared and analyzed according to regional distribution, trend periods, and style characteristics. The Han elements of ancient gagye in Korea and China appeared in the hat type, the high-bun type, and accessories that left the hair down. The northern race elements were found in the circle type and multi-bun type. The uniqueness of Goguryeo elements included a circle from the circle type, a triangle style from the hat type, an up-do style from the high burn type, and simplified hair accessories.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.1244-1249
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• 2007

Pursuing sustainable development throughout society and industry and the field of environmental policy, each international organization or nation has performed international standardization projects on environmental management activities for their system as well as environmental assessment for a product such as life cycle assessment (LCA) and life cycle inventory database (LCI DB), and the environmental aspects have been increasingly demanded as crucial evaluation specifications. Moreover, the conventional environmental policy, which represents the direct-control, has been more dependent on the market forces and product itself after the Climate Change Convention., and the Integrated Product Policy (IPP, EU) is applied vigorously to strengthen global competitiveness of a product and to achieve the effect of environmental improvement for it. According to change of the international railway market, the value of Eco-Design has been increasingly important in developed countries including EU. Thus, each country is establishing its own guidelines, software and database for each product, and developing new policies through Eco-Design with practical results in marketing. To react this and develop Korean railway as an environment-friendly industry with priority to other transportation system as well as maintain high place in technology, the direction of RACE software development of main function is introduced, which is exclusively used for EMU to assess both environmental and economic aspects with LCA and eco-efficiency (EE).

• 한국해양공학회지
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• 제28권4호
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• pp.314-323
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• 2014

In this study, a gearbox and blade were modeled in the MASTA program, and the housing and carrier components were modeled using a finite element method. Using substructure synthesis, all the components were combined and used to establish a vibration model of a 2.5-MW wind turbine gearbox. In addition, the safety displacement factor was evaluated using an AGMA data sheet about bearing's outer race for the input shaft and output shaft. As a result, the bearing's outer race for the input shaft, and the radial and axial responses were satisfied by the $1^{st}$ and $2^{nd}$ planetary gears and the $3^{nd}$ helical gear transmission error(TE), respectively. However, the output shaft support bearing's outer race responses were not satisfied with the radial response by the $2^{nd}$ TE and axial response by the $3^{rd}$ TE. To reduce the vibration, tooth modification was needed. After profile tooth modification, at the outer race of the output shaft support bearing, the radial response was reduced by approximately $20{\mu}m$, and the axial response was reduced by approximately $6{\mu}m$.

• 복식
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• 제44권
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• pp.215-233
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• 1999

The Miaos have their own peculiar and luxurious transtional culture a they have experienced repeated fusion into and resistance againt the Han Race or the chinese in their long and old history. And the traditional culture of the Miaos is abundant and diverse in several respects. Because it has taken root in foundation of their simple and native environment. it is embracing abundant and diverse contents. They largely used as the theme of patterns factual materials such as natural objects easily accessible in the natural environment. those related to marratives reflective of ethnicity, animals and plants symbolic of auspicious omen, peace, happiness and good harrest with prosperity and abundance. And they not only crossornamented natural patterns and geometrical patterns by combining them but also geometric patterns alone. It can be seen that Miaos represented patterns with exaggerated formation, overlapping and modification and the comprehensive, fomation of natural forms, abstract formation etc. Seeing the ethnic costume of Miaos investigated in these several respects by the standard of contemporary beauty it is thought that it has the infinite possibility of being used in contemporary fashion design on account of the characteristic of almost perfect costume.

• 식물병연구
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• 제14권3호
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• pp.143-152
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• 2008

도열병에 대한 감수성 정토가 다른 두 품종의 혼합재배에 의한 무농약 도열병 방제효과를 조사하였다. 재배 생력화를 위해 도열병 저항성을 제외한 품질을 비롯한 벼의 유전적 형질이 유사한 품종조합을 선발한 결과 '호평벼'와 '남평벼'의 조합을 1:1로 종자 혼합을 통한 혼합재배를 실시하였을 때 50.4%의 이삭도열병 방제효과가 있었다(2007). 단일재배시 최대 67.4%까지 우점을 보이던 KJ-101레이스가 혼합재배구에서 최소 29.4%로 감소하였고 그 외의 기타 레이스들이 차지하는 비율은 5.4%에서 9.0%로 증가하였으며 11개의 새로운 레이스가 분리되었다. 단독 혹은 혼합재배에 관계없이 분리된 레이스의 수는 유사하였으나 혼합재배 시 새로운 레이스가 차지하는 비율이 12.5%에서 62.5%로 증가하였고 레이스 간 밀도의 차이는 23.6%에서 8.8%로 감소하였다. 이러한 병원균 레이스 다양성의 변화와 레이스 밀도의 균형이 혼합재배에 의한 도열병 발생의 감소와 깊은 관련이 있을 것으로 추정되며 이와 더불어 혼합재배 효과에 대한 좀 더 명확한 설명을 위해 병원력을 비롯한 레이스의 유전적 형질에 관한 연구가 추후 보완되어져야 할 것이다.

• 한국식물병리학회지
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• 제3권3호
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• pp.174-179
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• 1987

1978년부터 1985년까지 8년간 전국에서 수집 분리한 도열병균 4,885균주를 공시하여 레이스를 판별하였다. $1978\~1980$년까지 일본 구판별품종에 의한 레이스 판별 결과는 통일계품종 침해레이스 6, T-레이스군 2, C-레이스군 5, N-레이스군 2 등 15개 레이스였고 $1981\~1985$년까지 한국 판별품종에 의한 레이스 판별 결과는 통일계품종과 일반계품종에 병원성이 있는 KI-레이스군 11, 일반계품종에만 병원성이 있는 KJ-레이스군 7종 등 18개 레이스로 판별되었다. 시험기간 중 우점레이스는 도열병이 다발된 $1978\~1979$년은 레이스 $N-2^{+t},\;1980\~1985$년은 레이스 KJ-301이었으며 현재 재배되고 있는 통일계품종 대부분에 병원성을 갖는 레이스 KI-315a, ki-315b가 1983년에 출현 그 분포가 증가하였다. 레이스의 지역적 분포는 강원도 지역에는 저항성유전인자 Pi-k, Pi-i를 갖는 품종을 침해하는 레이스 KJ-105, KJ-201의 분포가 많았고, 충북, 전남 지역에는 레이스 KI-315b가 타지역보다 많이 분포하였다.

• 영어영문학
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• 제55권2호
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• pp.215-240
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• 2009

This paper focuses on how Younghill Kang internalizes whiteness ideology through interracial romance to build himself as an oriental Yankee and recover his masculinity in his autobiographical novel East Goes West. This paper also focuses on Kang's strategy of racial and cultural hybridity presented in this novel. The theoretical basis of my argument is a mixture of Fanon's psychoanalysis in his Black Skin, White Masks, Bhabha's notion of mimicry in The Location of Culture, and notions related to race and gender of some Asian critics such as Patricia Chu, Jinqi Ling, and Lisa Lowe. In East Goes West, white women appear as "ladder of success" of successful assimilation and serve as cultural mediators and instructors and sometimes adversaries who Korean male immigrants have to win to establish identities in which Americanness, ethnicity, and masculinity are integrated. However, three Korean men, Chungpa Han, To Wan Kim, George Jum, who fall in love with white women fail to win their beloveds in marriage. George Jum fails to sustain a white dancer, Jun' interest. Kim wins the affection of Helen Hancock, a New England lady, but Kim commits suicide when he knows Helen killed herself because her family doesn't approve their relationship. Han's love for Trip remains vague, but Kang implies Han will continue his quest for "the spiritual home" as the name of "Trip." In East Goes West, Kang also attempts to challenge the imagining of a pure, monolithic, and naturalized white dominant U.S. Culture by exploring the cultural and racial hybridity shown by June and the various scenes of Halem in the 1920s. June who works for a Harlem cabaret is a white woman but she wears dark makeup. Kang questions the white face of America's self-understanding and racial constitution of a unified white American culture through June's racial masquerade. Kang shows that like Asian and black Americans, the white American also has an ambivalent racial identity through June's black mimicry and there is no natural and unchanging essence behind one's gender and race identity constitution.