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서태길 ( Tae Gil Seo ) 민족어문학회 2012 어문논집 Vol.- No.66
이 논문은 <도구성> 절단 동사의 분절 구조를 연구하는 것을 목적으로 한다. 연구 대상으로 삼는 어휘는 모두 15개로 이들 목록은 어휘 빈도수에 의해서 대표성을 띠는 것을 선별하였다. 그 목록은 ‘가르다, 깎다, 끊다, 도리다, 마르다, 바르다, 베다, 썰다, 오리다, 자르다, 째다, 쪼개다, 저미다, 켜다, 패다’이다. 이들은 <분리성>, <예리성>, <정밀성>, <정형성>, <방향성> 등에 의해서 각각 하위 영역으로 분절된다. 인간과 동물을 구분하는 여러 가지 근거 중에 하나가 도구의 사용이고 선사시대 인류가 돌을 깨서 가죽을 자르거나 살을 바르는 데 이용해온 것을 보면 손과 도구를 이용해서 사물을 용도에 맞게 절단하는 행위는 인류 보편적인 행동방식이라고 볼 수 있다. 따라서 절단 동사의 분절구조를 살펴보는 것은 한국어 모국어 화자의 정신세계를 이해하는 데 기여할 것이라고 생각한다. This paper aims to study relative positions in the Korean semantic field of transitive verbs related to the meaning of ``cutting`` with tools. The study deals with 15 typical verbs which are selected based on frequency of use The list includes ``gareuda, kkakkda, kkeunhda, dorida, mareuda, bareuda, beda sseolda, orida, jareuda, jeomida, jjaeda, jjogeda, kyeoda, paeda``. They are first of all classified by ``accuracy of cutting`` and then are classified into sub-fields by the criteria of ``separability of objects``, ``shapes of objects``, ``methods for cutting`` and so on. It is well known that what makes human beings different from animals is the use of tools. Human beings have cut leather and flesh of animals ever since they appeared on the earth, so the behavior of cutting is universal for the human race. Thus, this paper help to understand the inward cognitive structure of the Koreans by establishing the wordfield which reveals the relationship between individual words.
박준식,서태일,배종석,윤길상,Park, Joon-Sik,Seo, Tae-Il,Bae, Jong-Suk,Yoon, Gil-Sang 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.3
Existing orthopedic implants such as pedicle screw and spinal cage were designed to fix the spinal structure. But, nowadays, physicians want to rehabilitate there original functions. To achieve this request, we studied micro-movable structure for interspinous. As a first step, we designed interspinous structure by 3D CAD to join each spinous processes. Next, we simulate it with various factors such as the thickness of micro-movement structure and the design of clip. At last, we performed static compressive test to satisfy the failure load of 339N and dynamic endurance test of 1.2M cycle. As a result, we developed interspinous implant and did several surgery to evaluated its satisfaction.
인공 척추경 나사시스템의 유연성 증가를 위한 플렉시블 로드의 개발 및 평가
윤길상(Yoon, Gil-Sang),손종인(Sohn, Jong-In),김건희(Kim, Gun-Hee),서태일(Seo, Tae-Il) 한국산학기술학회 2011 한국산학기술학회논문지 Vol.12 No.4
본 논문은 요추부의 손상이 심할 경우 척추경 나사시스템이라는 인공물을 이용하여 수술을 하게 되는데, 이 때 적용되는 척추경 나사시스템의 역학특성을 분석하였다. 척추경 나사 시스템으로 고정된 디스크는 일반적으로 퇴행 되지만, 제안된 플렉시블 로드를 적용할 경우 고정된 디스크에 유연성(6도 이하)을 부여할 수 있어 디스크가 퇴행되 는 것을 막아주는 역할을 할 수 있다. 본 연구에서는 유한요소 해석을 이용하여 플렉시블 로드를 적용한 척추경 나사 시스템의 역학특성을 분석한 결과, 10N 이하의 척추 거동에서 플렉서블 로드는 항복 응력 이내의 응력 분포가 나타 남을 알 수 있었으며. 분석된 플렉시블 로드 시스템은 실제 제작 후 인장, 압축 비틀림 등의 척추경 나사 시스템 공 인 규격 실험(ASTM F 1717)을 수행하여 항복 응력 이내의 안정적인 작동성을 검증하였다. In this paper, it is analyzed about the mechanical characteristics of pedicle screw system which is a artificial implant for surgery to treatment serious lumbar vertebra diseases. The disk of lumbar vertebra to be fixed by pedicle screw system shows regressive phenomena. But if flexible rod, to give a flexibility(under 6 degree) to fixable disk is applied, it can protect against the degeneration of disk. This research is carried out a mechanical characteristic of pedicle screw system used flexible rod through finite elements analysis, and then flexible rod system was verified about safe movement through compression, tension and torsion test which is the pedicle screw system official recognition test(ASTM F 1717).
박준식(Joon-sik Park),서태일(Tae-il Seo),배종석(Jong-suk Bae),윤길상(Gil-sang Yoon) 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.3
Existing orthopedic implants such as pedicle screw and spinal cage were designed to fix the spinal structure. But, nowadays, physicians want to rehabilitate there original functions. To achieve this request, we studied micro-movable structure for interspinous. As a first step, we designed interspinous structure by 3D CAD to join each spinous processes. Next, we simulate it with various factors such as the thickness of micro-movement structure and the design of clip. At last, we performed static compressive test to satisfy the failure load of 339N and dynamic endurance test of 1.2M cycle. As a result, we developed interspinous implant and did several surgery to evaluated its satisfaction.
측면가공에서 마이크로 엔드밀의 공구변형에 의한 절삭가공오차 보상에 관한 연구
전두성(Du-Seong Jeon),서태일(Tae-il Seo),윤길상(Gil-Sang Yoon) 한국생산제조학회 2008 한국생산제조학회지 Vol.17 No.2
This paper presents a machining error compensation methodology due to deflection of micro cutting tools in side cutting processes. Generally in order to compensate for tool deflection errors it is necessary to carry out a series of simulations, cutting force prediction, tool deflection estimation and compensation method. These can induce numerous calculations and expensive costs. This study proposes an improved approach which can compensate for machining errors without simulation processes concerning prediction of cutting force and tool deflection. Based on SEM images of test cutting specimens, polynomial relationships between machining errors and corrected tool positions were induced. Taking into account changes of cutting conditions caused by tool position variation, an iterative algorithm was applied in order to determine corrected tool position. Experimental works were carried out to validate the proposed approach. Comparing machining errors of nominal cutting with those of compensated cutting, overall machining errors could be remarkably reduced.
단일 절삭을 이용한 미세금형의 구배각 구현에 관한 연구
서금희(Keum Hee Seo),우창기(Chang Ki Woo),서태일(Tae Il Seo),윤길상(Gil Sang Yoon) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
Recently micro molds for plastic injection processes or micro stamping processes (hot embossing processes) were generally required for various micro-scaled products. In cases of micro molds various problems appears because relatively small tools have to be used. In our study, strongly concerned an approach which allows to machine suitable draft angles by only one pass cutting through adjustment of cutting conditions so that tool deflection effects should cause machining errors as much as required draft angles.
박준식(Joon-sik Park),서태일(Tae-il Seo),배종석(Jong-suk Bae),윤길상(Gil-sang Yoon) 한국생산제조학회 2005 한국공작기계학회 추계학술대회논문집 Vol.2005 No.-
Existing orthopedic implants were designed to fix the spinal structure. But, nowadays, physicians want to rehabilitate there original functions. To achieve this request, we studied micro-movable structure for interspinous. As a first step, we designed interspinous structure by 3D CAD to join each spinous processes. Next, we simulate it with various factors such as the thickness of micro-movement structure and the design of clip. At last, we performed static compressive test and dynamic endurance test. As a result, we developed interspinous implant and did several surgery to evaluated its satisfaction.