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      • KCI등재

        구강외과 수술용 스텐트 기반 영상유도 수술 시스템의 개발

        이우진,김대승,이원진,이삼선,최순철,허민석,허경회,김명진,이지호 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.3

        Purpose : The purpose of this study was to develop a stent-based image guided surgery system and to apply it to oral and maxillofacial surgeries for anatomically complex sites. Materials and Methods : We devised a patient-specific stent for patient-to-image registration and navigation. Threedimensional positions of the reference probe and the tool probe were tracked by an optical camera system and the relative position of the handpiece drill tip to the reference probe was monitored continuously on the monitor of a PC. Using 8 landmarks for measuring accuracy, the spatial discrepancy between CT image coordinate and physical coordinate was calculated for testing the normality. Results : The accuracy over 8 anatomical landmarks showed an overall mean of 0.56±0.16 mm. The developed system was applied to a surgery for a vertical alveolar bone augmentation in right mandibular posterior area and possible interior alveolar nerve injury case of an impacted third molar. The developed system provided continuous monitoring of invisible anatomical structures during operation and 3D information for operation sites. The clinical challenge showed sufficient accuracy and availability of anatomically complex operation sites. Conclusion : The developed system showed sufficient accuracy and availability in oral and maxillofacial surgeries for anatomically complex sites. (Korean J Oral Maxillofac Radiol 2009; 39 : 149-56)

      • 남·북한 중등학교 수학교과서의 기하·해석영역의 비교 연구

        진홍성,이식,김삼태 여수대학교 1999 論文集 Vol.14 No.2

        Education plays important role in coming to an accommodation and in restoring homogeneity of the korean race after unification. we consider the investigation of mathematics text-books of secondary schools in South and North Korea. In particularly, in this paper, we shall investigate the learning contents and the learning substances and its a distribution diagram in textbooks by falling into two regions, geometry and analysis.

      • CSMA/CD 프로토콜을 이용한 근거리 통신망의 성능평가

        진성호,최삼길 東義大學校産業技術開發硏究所 1998 産業技術硏究誌 Vol.12 No.-

        This paper analyzes performance of Dongeui Network using Internet Advisor of HP. There are many examples of transmission efficiency, response time, reliability of system and transmission distance through the imitate inspection analysis that is in the existent network performance. But those analysis is the imitate inspection. So, it has many differences between real network. And, this paper will approach the real network analysis using traffic characteristics, utilization, and the number of used node in the Dongeui Network. Hence, those research data will be important basis of network design and enlargement.

      • 전자무역계약체결에 있어 법적 문제점

        김진삼, 이기수 영남대학교 사회과학연구소 2000 社會科學硏究 Vol.20 No.1

        인터넷의 보편화와 정보통신기술의 현격한 발달은 국제무역의 신관행(neu trade practices)을 요청하고 있다. 그러나 이러한 신관행으로의 원활한 이전과 국제전자상거래의 발달은 기술적 · 거래적 · 법률적 환경의 상호 유기적인 측면에서 뒷받침되어야 한다. 이러한 선결과제 중에서도 법률적 요인이 가장 시급한 해결 과제로 대두되고 있다. 최근 정부에서도 다소 늦은 감이 있지만 사이버무역 또는 인터넷무역 등 전자적 방식에 의한 기존 거래관행을 전자무역이란 개념 하에서 대대적인 법 및 제도정비에 나서고 있다. 물론 전자무역의 출발에서부터 종료까지의 많은 단계는 전통적인 절차를 존속시키고 있으며, 각 절차상 나타날 수 있는 법률적 문제점들이 제기될 수 있다. 이에 본고에서는 전자무역계약체결 시점에서 야기될 수 있는 계약의 성립시기, 그리고 계약과 관련한 분쟁발생시 해결의 토대가 되는 준거법 문제와 재판관할권에 대한 문제를 중심으로 제기되는 법적 문제점을 고찰하였다. 연구방법 및 목적은 기존 연구와 관련법 및 자료분석 중심으로 이루어졌으며, 새로운 법 제정의 방향을 제시한다기 보다는 무역상무적 관점에서 무역실무자들의 해석적 기초를 제시한다는데 주안점을 두고 검토하였다.

      • KCI등재후보
      • 혈액투석환자 배우자의 스트레스와 대응에 관한 연구

        원삼순,권혜진 중앙대학교 의과대학 의과학연구소 1992 中央醫大誌 Vol.17 No.4

        This descriptive study designed to identify stress factors and level and helpful coping methods of hemodialysis patient's spouse. Data were collected from 60 subjects who were spouses of hemodialysis patient of conveniently selected 4 Hemodialysis Units in the city of Seoul. The Collection of data it was carried out by the researcher from the 7th of Octobor to 20th of October, 1992. Two instruments were used to collect the data ; 1. Stress questionaire was developed by researcher which was combined review of literature and the result of interviewer, consisted 30 stress factor items and measured by five point Likert scale. The items were categorized physical, psychological and socioeconomic area. 2. Helpful coping questionaire developed by investigator through literature review and result of interviewer, included 50 items and measured by five point Likert scale. Helpful coping items were classified into two categories, the problem oriented and the affective oriented. Data was analyzed by S.A.S. computer porgram using percentile, means and standard deviation, t-test and Pearson correlation coefficient. The results of this study are summerized as follows 1. The spouses of hemodialysis patient were found to be stressful in general and the items with high stress were "To be treated indefinite period of time", "Uneasiness of trevel", "To be say with their spouse who suffer pain", "To ingest medication continuously", "Financial burden", "No treatment except kidney transplantation", "Anxious about disease transmission due to transfusion" and the highest stress category was physical. 2. The spouses of hemodialysis patient were shown to be helpful by the coping methods and the most helpful coping items "To accept as a fate" and "Self condolence comparing others who were in a more serious rather than thier sitution" and the higher helpful coping method was affective oriented. 3. The result of the analysis of the relationship between scores of stress categories and general characteristics was as follows : Spouse's sex, house shape, and occupational status before the patient got illness showed a statistically significant difference in score of stress categories(P<0.05) 4. The result of the analysis of the relationship of the relationship between helpful coping methods and general characteristics was as follows : The number of family, the state of medical insurrance, spouse's disease, the number of hemodialysis, and having or not having complication related with hemodialysis showed a statistically significant differance in helpful coping methods(P<0.05) 5. There was significant differance among stress categories and coping methods.(P<0.01)

      • 버퍼 캐슁과 선반입 정책의 통합에 관한 연구

        盧三赫,崔秦豪 弘益大學校 科學技術硏究所 1997 科學技術硏究論文集 Vol.8 No.-

        Many methods have been developed to alleviate the speed gap between processors and disks. Among these, the use of the buffer cache in main memory is a typical example. Through judicious management of the buffer cache as well as using prefetching techniques the performance of file systems have been greatly enhanced. Recent studies that have used prefetching with buffer cache management can be divided into those that use some form of hints provided by the applications and those that do not use such information. The former type is expected to bring about considerable benefits. However, they have the disadvantage that to obtain this information considerable work must be done by the application developer or at the system program level. The latter type, on the other hand, dose not require any added overhead, but sacrifices performances. This paper focuses on this second type of management and survey the integration of buffer caching and prefetching policies.

      • KCI등재
      • KCI등재후보

        한국 특수교육 행정조직의 발전과정에 관한 연구

        이석진,김삼섭 국립특수교육원 2004 특수교육연구 Vol.11 No.2

        이 연구는 한국 중앙정부의 특수교육 행정조직의 변천과정을 분석 검토하고, 이를 토대로 특수교육 행정조직의 발전적인 방향을 제시하기 위한 정책발전 연구 중의 하나이다. 이를 위하여 행정조직의 변천과정을 특수교육정책의 태동기·정초기·발전기·도약기로 구분하고, 각 시대의 특수교육 행정조직의 존재여부와 그 기능을 고찰하였다. 연구의 방법은 교육행정 조직의 근거가 되는 정부조직법, 교육인적자원부의 직제연혁 등을 수집하고 이를 시대별로 정리한 후 비교하였다. 연구결과, 특수교육 행정조직의 발전방향은 다음과 같다. 첫째, 교육인적자원부에는 독립된 과 또는 국 단위 이상의 특수교육 행정조직이 있어야 한다. 둘째, 특수교육 행정조직은 특수교육에 관한 전문지식이 있는 전문가들이 장애영역별로 대치되어야 한다. 셋째, 지방 자치단체의 특수교육 행정조직에 관한 연구가 수행되어야 한다. This study reviews the history and transition of the special education administrative system in Korea, and suggests policy-making strategies to give better directions to the Korean special education administrative system. For these purposes, the periodical changes of the special education administrative policy was divided into the followings: The term of each period was classified into the Quickening Period(1870-1948), the Foundation Period(1946-1976), the Developmental Period(1977-1993), and the Take-off period(1994-present). The Quickening Period can be divided into three sub-periods based on the modem history of Korea, Civilized Nation Period(1870-1910), Japanese Occupation Period(1911-1945), and American Military Administration Period(1946-1948). Each period is investigated by the existence and function of the special education administrative policy. The data of this research is collected from the educational administrative organizations based on the National Government Organization Act and the organizational history about the Ministry of Education & Human Resources Development. Comparative data are arranged by the period and analysed. Major suggestions from this study are summarized as follows: First, the special education administrative organizations belonged to the Ministry of Education & Human Resources Development should take more powerful division. Second, expertises with special education knowledge should be stationed by the types of disabilities at the special education administrative organizations. Third, local communities should implement efforts related to the special education administrative organizations.

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