Structural and functional stabilities of artificially designed DNA ultra-thin films grown by silica Assistance

이준휘,구종현,황시운,민선민,안상정,노용한,박성하 한국물리학회 2012 Current Applied Physics Vol.12 No.4

We report the structural and functional stabilities of artificially synthesized DNA ultra-thin films. Fully covered DNA ultra-thin films on a silica substrate were fabricated by the silica-assisted growth method and those samples were then incubated in various chemicals and physical conditions. The DNA ultra-thin films showed high maintainability under those harsh conditions and these results would aid to facilitate the use of artificial DNA ultra-thin films in advanced research areas such as biophotonics and bioelectronics.

객체지향 설계 방법론에 대한 비교분석

이준휘 대불대학교 1996 論文集 Vol.2 No.2

In this paper, we compare module based on structural stratagy with module of object oriented concept. Through investigation of object oriented module design, object oriented solution method could give aid to the method to solve the new problem which is nearly thought of human being than that of existing structural concepts. Thus using the object modeling application and utilization could more and approach to object oriented design.

상하악 악교정수술 후 입술 기울기변화

이준휘(Jun-Hee Lee),홍종락(Jongrak Hong),김영호(Young-Ho Kim) 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.6

Purpose The purpose of study was to investigate the correlationship between lip canting change and occlusal canting change after bimaxillary orthognathic surgery, and the ratio of lip canting change and occlusal canting change after the surgery. Patients and methods The subjects for this study was obtained from a group of 25 patients who took bimaxillary orthognathic surgery for occlusal canting correction at the Department of the Oral and Maxillofacial Surgery, Samsung Medical Center in Seoul, Korea between January 2000 and December 2005 and a patient’s chart had to contain a resting frontal facial photograph in natural head position and a corresponding PA cephalogram in occlusion on the same day before the surgery and post-op 6 months later. The lip canting change was assessed with the angle each labial commissure and the bipupilary reference line. And, the occlusal caning change in the frontal plane was assessed with the angle between the each maxillary first molar occulasal surface and the bi-frontozygomatic suture reference line. Results In angular measurement, average occlusal canting change was 3.09oand standard deviation was 1.05o, average lip canting change was 1.56and standard deviation was 1.05. In linear measurement, average occlusal canting change was 2.41mm and standard deviation was 2.75mm, average lip canting change was 1.18mm and standard deviation was 0.43mm. Lip canting correction ration to occlusal canting correction was 51.5(±8.4)% in angular measurement and 48.8 (±9.1)% in linear measurement. Under Pearson’s correlation analysis, Pearson’s correlation coefficient was 0.869 in angular measurement and 0.887 in linear measurement (p-value < 0.01). High correlationship was shown between occlusal canting change and lip canting change. Conclusion First, Bimaxillary orthognathic surgery can correct lip canting as well as occlusal canting. Second, The average amount of lip canting correction is 51.5±8.4%, 48.8±9.1% of occlusal canting correction in the study.

임플란트주위골 흡수 및 상악전치부 치조제 형태와의 관계에 대한 방사선학적 연구

이준휘(Jun-Hee Lee),홍종락(Jong-Rak Hong),김창수(Chang-Soo Kim) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.6

Purpose The purpose of this study was to evaluate peri-implant bone loss and implant success on anterior maxillary alveolar ridges and Compare Class III and Class IV ridges in the aspect of peri-implant bone loss. Material and Methods 14 patients (aged 21 to 68, 6males and 8females), who lacked maxillary anterior teeth and were installed from January 2000 to April 2003 at Samsung Medical Center, were selected. The type of implant used included 30 Br¨anemark implant. They were taken with digital tomographic and conventional intraoral radiographic examinmation, and were treated with implant installaion without bone augmentation. The peri-implant bone resorption was measured at the mesial and distal aspect of implant on the conventional intraoral radiographs. Results The study classified the anterior maxillary alveolar ridge and measured peri-implant bone resorption from the period of implant installation to the 2nd year after functional loading radiographically. The study revealed no statistically significant difference between two groups, which was classified by its morphology. The average bone resorption on healing period before loading was 0.18mm and 0.18mm, the 1st year of loading period, 0.77 mm and 0.84mm, and on the 2nd year of loading period, 0.07mm and 0.06mm, respectively on both Class III and class IV. Conclusion In the knife edge form of anterior maxillary residual ridges(Class IV), implant placement without ridge augmentation does not have significant difference with that of Class III alveolar ridge in the concern of Implant success after 2 year functional loading period in the aspect of peri-implant bone resorption radiographically.

S/W 개발 프로젝트 품질인증 및 조직 성과에 관한 연구

백신원,이준휘,문기동 한경대학교 2003 論文集 Vol.35 No.-

Quality of software development project is very important in complex and largest domestic software markets. CMM level certification evaluated about quality of software development project at present. Therefore, software development company attempts acquisition for CMM Certification, CMM level up and organization's realiavility. But, today confidentiality of CMM certification comes into question, An exploratory study was undertaken about difference of software project quality and organization performance between CMM certification organization and no-CMM certification organization. Two organizations make no odds partially. First of all, incremental improvement of project process takes precedence of CMM certification.

사이버 교육 시스템의 설계에 관한 연구

백신원,이준휘,문기동,변종순 한경대학교 2003 論文集 Vol.35 No.-

The education based on the web (WBI) has need of the formation of a new educational paradigm which is different from the method of an existent traditional class as a model of a new teaching-learning. Also, a credit is recognized in case that the person concerned obtains a national certificate of qualification through establishment and promulgation by 【the law of the recognized credit etc.】 in the national educational reform. In such realities on-line learning-site of theory on the qualification of an information processing to use the web. However it is nearly difficult to find out the learning sites related to a subject for the information processing exercise revised in Aug, the year 2001. Thus, this thesis designed and embodied the educational system of the information processing exercise to reconstruct a Supervision Program for a scholastic examination test, a learning content of Visual Basic, a mock entrance examination, and a previous questions of practical in order to obtain the certificate of information processing qualification through a self-directed learning to use the web without limitation of time and space by the students-selves to apply 10 steps of a general design process with WBI to the method of development.

스타일 기반 키워드 추출 및 키워드 마이닝 프로파일 기반 웹 검색 방법

주길홍,이준휘,이원석,Joo, Kil-Hong,Lee, Jun-Hwl,Lee, Won-Suk 한국정보처리학회 2004 정보처리학회논문지D Vol.11 No.5

World Wide Web의 대중화로 인해 전자 정보량이 급속하게 증가하였고, 이러한 많은 양의 다양한 정보에 대한 효율적인 검색 시스템의 필요성이 증대되었다. 정확한 검색 결과를 제공하기 위해 사용자 요구 사항의 올바른 분석과 서술이 중요하게 인식되고 있으며, 분산 환경에서의 요구 사항 추출 및 분석의 필요성이 대두되고 있다. 본 논문에서는 웹 검색 방법에 있어서 목표 검색어만을 가지고 검색을 수행하는 기존 검색 방법과 달리 검색어가 나타나는 문맥 정보를 추가하여 검색하는 방법을 제안하고 구현하였다. 또한 본 논문에서는 제안된 새로운 키워드 추출 방법으로 추출된 키워드를 기반으로 키워드 마이닝 프로파일에 기반한 웹 검색 시스템을 제안하고 구현하였다. 이는 원하는 정보를 대표하는 목표 검색어만 가지고 검색을 수행하는 기존의 검색방법과 달리 검색어가 포함된 문맥정보를 추가하여 검색하기 때문에 기존의 검색방법보다 정확하고 효율적인 정보를 제공한다. 특정 도메인으로부터 순위가 매겨진 도메인 키워드 리스트를 작성하여 이를 기준으로 기존의 출현빈도기반의 차이를 실험을 통하여 보였으며, 예제 기반 질의를 바탕으로 키워드 마이닝 프로파일을 만들어 검색을 수행하는 검색 방법으로 이의 효용성을 실험을 통해 검증하였다. With the popularization of a World Wide Web (WWW), the quantity of web information has been increased. Therefore, an efficient searching system is needed to offer the exact result of diverse Information to user. Due to this reason, it is important to extract and analysis of user requirements in the distributed information environment. The conventional searching method used the only keyword for the web searching. However, the searching method proposed in this paper adds the context information of keyword for the effective searching. In addition, this searching method extracts keywords by the new keyword extraction method proposed in this paper and it executes the web searching based on a keyword mining profile generated by the extracted keywords. Unlike the conventional searching method which searched for information by a representative word, this searching method proposed in this paper is much more efficient and exact. This is because this searching method proposed in this paper is searched by the example based query included content information as well as a representative word. Moreover, this searching method makes a domain keyword list in order to perform search quietly. The domain keyword is a representative word of a special domain. The performance of the proposed algorithm is analyzed by a series of experiments to identify its various characteristic.

스타일 기반 키워드 추출 및 키워드 마이닝 프로파일 기반 웹 검색 방법

주길홍,이준휘,이원석 한국정보처리학회 2004 정보처리학회논문지D Vol.11 No.6

World Wide Web의 대중화로 인해 전자 정보량이 급속하게 증가하였고, 이러한 많은 양의 다양한 정보에 대한 효율적인 검색 시스템의 필요성이 증대되었다. 정확한 검색 결과를 제공하기 위해 사용자 요구 사항의 올바른 분석과 서술이 중요하게 인식되고 있으며, 분산 환경에서의 요구 사항 추출 및 분석의 필요성이 대두되고 있다. 본 논문에서는 웹 검색 방법에 있어서 목표 검색어만을 가지고 검색을 수행하는 기존 검색 방법과 달리 검색어가 나타나는 문맥 정보를 추가하여 검색하는 방법을 제안하고 구현하였다. 또한 본 논문에서는 제안된 새로운 키워드 추출방법으로 추출된 키워드를 기반으로 키워드 마이닝 프로파일에 기반한 웹검색 시스템을 제안하고 구현하였다. 이는 원하는 정보를 대표하는 목표 검색어만 가지고 검색을 수행하는 기존의 검색방법과 달리 검색어가 포함된 문맥정보를 추가하여 검색하기 때문에 기존의 검색방법보다 정확하고 효율적인 정보를 제공한다. 특정 도메인으로부터 순위가 매겨진 도메인 키워드 리스트를 작성하여 이를 기준으로 기존의 출현빈도기반의 차이를 실험을 통하여 보였으며, 예제 기반 질의를 바탕으로 키워드 마이닝 프로파일을 만들어 검색을 수행하는 검색 방법으로 이의 효용성을 실험을 통해 검증하였다 With the popularization of a World Wide Web (WWW), the quantity of web information has been increased. Therefore, an efficient searching system is needed to offer the exact result of diverse information to user. Due to this reason, it is important to extract and analysis of user requirements in the distributed information environment. The conventional searching method used the only keyword for the web searching. However, the searching method proposed in this paper adds the context information of keyword for the effective searching. In addition, this searching method extracts keywords by the new keyword extraction method proposed in this paper and it executes the web searching based on a keyword mining profile generated by the extracted keywords. Unlike the conventional searching method which searched for information by a representative word, this searching method proposed in this paper is much more efficient and exact. This is because this searching method proposed in this paper is searched by the example based query included content information as well as a representative word. Moreover, this searching method makes a domain keyword list in order to perform search quickly. The domain keyword is a representative word of a special domain. The performance of the proposed algorithm is analyzed by a series of experiments to identify its various characteristic

재사용 소프트웨어 선정을 위한 複雜度 測定에 관한 硏究

박종구,강대영,이준휘 원광대학교 공업기술개발연구소 1992 工業技術開發硏究誌 Vol.12 No.-

From the general programer's viewpoint, the complexity degree representing the quality of software is dassified into the size of program, the flow of control unit, and the flow of data suggested by Magel. I intended to embody some new methods mixed with these measuring elements. As correlation of each elements shows reqularly compared with the many existing measuring formular, this thesis can be measured more correct complexity. Looking the results that newly producted, we can't regard the lowest difficulty degree as the lowest complexity degree. Therefore, if we select the most excellent software we must select the software that MCS's measuring value is lowest. And so we can reusable the software effectively.

겨울철 적설 관측 특성 및 예보시스템 현황

조경숙,서애숙,이준휘 한국방재학회 2005 한국방재학회지 Vol.5 No.4