통합 검색 | Korea Science

황종대;허윤녕;오지영;정윤교;조성림
- 한국기계가공학회지
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- 제7권3호
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- pp.30-35
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- 2008
As demands for being economical, precise drilling process is on the increase. Therefore, the objective of this study is to develop a step cutter that can be controllable through micro dimension and can be changed from separate manufacturing processes of drilling and boring into an integrated one. In order to attain this object the step cutter is designed with a 3D geometric modeling and the design could be modified easily by using parametric modeling methodology. Also, collision is not occurred during manufacturing process because of cutting simulation. The step cutter is assembled by parts made up of 5-axis machining and sintering. Validation tests are accomplished. They show that developed cutter has characteristics such as reduction of machining time as well as the good surface roughness of the machined hole. Indeed, reliability could be obtained from a durability test.
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이복기
- 영어어문교육
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- 제12권3호
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- pp.227-242
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- 2006
In a post-modern society where things exist and events happen in the form of Baudrillardian simulation, alterity of the other is erased and transcendence is denied. Don DeLillo's White Noise depicts what may happen in a society where alterity and transcendence are experienced in the neutral and safe forms. It will be argued in this paper that such phenomena reflect the desire of the self to conquer the others and neutralize the existence of them for the self's enduring safety and accomplishment. However, the attempt must fail due to inevitable death. The invincibility of death reminds one of the limit of his ability and the existence of uncontrollable part of the other. This paper will focus on DeLillo's critique of such a society, the affect of the existence of death as an invincible force, and his message about the way to live under these conditions.
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