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이희민,김재현,이봉주,하태규,김흥곤,윤기중 圓光大學校 醫科學硏究所 1996 圓光醫科學 Vol.12 No.1
Mature cystic teratomas comprise 10% of all ovarian tumors and show the highest frequency of incidence in women under 20 years of age. Torsion of ovarian cyst is the most common complication in young female and lower abdominal pain, peritonitis, necrosis and shock are outcomes that require emergency treatment. Generally, gross finding of mature cystic teratoma shows that most of the entire ovary is replaced by multiple cystic masses, and rarely only small portion of the ovary is changed into cystic mass. We report a case of torsion of mature cystic teratoma in an 11 year old girl with a brief review of literature.
이재곤,조정화,이길호 경기대학교 부설 관광종합연구소 2014 여가관광연구 Vol.21 No.-
Regions and cities are investing their interest and budgets to tourism industry which is believed to activate their economy, strengthen their brand assets, provoke residents' pride and etc. Recently, meeting and convention industry is regarded as a strategica1 sector among tourism related industries. This industry is composed of three pillars a demand pillar(host-associations, corporations), a sup아y pillar(seπice & products providers-venue,other suppliers), a marketing pillar(DMO-Cvbs), and the ba1anced development of these three pillars is necessary for the competitiveness of the meeting convention indus따T. This paper intends to suggest strategies to the regions and cities' administrators through the correlation ana1ysis between the competitiveness of the meeting convention and the CVBs and the size of the convention centers. 세계의 도시와 지역에서는 지역경제 활성화,도시 및 지역브랜드 자산 강화,지역에 거주하는 주민의 자긍심 고취를 위해 관광산업이 효과적이라고 보고,관광산업에 관심과 예산을 투자하고 있다. 최근 미팅컨벤션 산업은 그러한 관광 연관산업 가운데서 가장 전략적인 사업으로 널리 인식되어 그 가치가 인정되고 있다. 미팅컨벤션산업은 3개의 중요 축으로 구성되어 있는데, 주최측인 협회,기업을 대표하는 수요축,미팅컨벤션 서비스와 상품을 공급하는 공급축,관광목적지 및 컨벤션 개최지 전담기구,컨벤션뷰로 등으로 대표되는 마케팅축이 그것이다. 이 3 개의 축을 균형적으로 발전시키는것이 마케팅컨벤션 산업의 경쟁력 강화를 위해 요구되어진다. 본 연구에서는 미팅컨벤션 산업의 경쟁력과 컨벤션뷰로와의 상관관계를 분석을 통하여 도시와 지역의 미팅컨벤션산업 육성을 위한 전략을 제시하고자 하였다.
매복 견치 및 저위교합 제 1대구치의 자가 이식에 의한 치험례
이승익,김재곤,권선자,백병주 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.2
In orthodontic treatment of certain cases of tooth loss, aplasia, or ectopia, autotransplantation is sometimes valid treatment alternative often provides and improved result, compared to conventional orthodontic treatment, an apprporiate donor tooth is available and the anatomic circumstances permit it. Clinically, successful transplants must show a radiolucent space between the roots and surroundings bone. There must be no evidence of ankylosis, no permanent root resorption, and no inflammation. Histologically, the criterion of success is a normal and functional periodontal ligament between the root surfaces of transplants and the bone, or gingival connective tissues. The successful autotransplantation of a impacted maxillary canine and infraoccluded mandibular 1st molar is reported. In case Ⅰ, impacted canine with incompletely developed root apex was maintained pulp vitality due to appropriate root development and short extraoral time, atraumatic surgical procedure. In case Ⅱ, infraoccluded molar was started endodontic treatment after 3 weeks. Because of closed apex, possibility of revasculization is rare. Both case Ⅰ, Ⅱ did not ankylosis and the periodontal and periapical tissues appears to be normal after 3 months. In autotransplantation cases it is important to transplant the tooth as quickly and as atraumatically as possible to dimish the chance of ankylosis and root resorption. In all cases of transplantation, patient selection minimal operating time, and good oral hygine will increase the chance for a successful prognosis.
이재호,김병곤,라기용 인천교육대학교 과학교육연구소 2001 과학교육논총 Vol.13 No.-
최근 들어 멀티미디어와 같은 고차원 데이터를 효율적으로 처리하기 위한 고차원 인덱스 구조에 대한 연구가 활발히 진행되어왔으며, 특히 R-트리를 기반으로 하는 인덱스 구조에 대한 연구가 가장 많이 발표되었다. 그러나, R-트리 계열의 색인기법은 데이터 삽입 시 삽입순서를 비효율적으로 배정하는 경우 실제적으로 자신과 거리가 먼 객체들과 동일한 노드에 삽입될 수 있다. 이는 인덱싱 구조 내에 많은 겹침을 초래하고 결과적으로 검색성능을 처하시킬 수 있다. 본 논문을 이러한 단점을 극복하기 위하여 데이터가 지니는 특성 즉, 공간적인 위치 정보를 분석하여 클러스터를 형서하고 이를 이용하여 인덱싱 형성에 적용하였고, 질의 처리 시 검색성능이 향상되도록 하였다. 또한 실험에서는 실제 이미니 데이터에 대하여 제안한 기법을 적용하여 성능이 향상되었음을 나타내었다. While the traditional data retrieval system can deal with text data and provides mechanisms for query processing technique for the text data, the multimedia data retrieval system is different from the traditional data retrieval system for that it can deal with multimedia data, such as image, audio, and video. Multimedia data are usually mapped to feature vectors in some multi-dimensional space such as color histograms, Fourier vectors, etc. For querying these data, appropriate indexing techniques such as R-tree, R*-tree and efficient query processing are important requirements in multimedia database systems. In this paper, we focused on the construction of R-tree variants indexing which is multi-dimensional indexing structure. A majority of multi-dimensional data retrieval systems thus produced have based their indexing structure on R-tree variants. Hence, research concerning improvements on efficient indexing construction in R-tree environments is meaningful.
이재곤,신장규,이정희,최시영 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1
The surfaces of (100) InSb were analyzed by Auger electron spectroscopy before and after sulfur treatment. The Auger spectrums for In_(2)O_(3), Sb_(2)O_(3), and elemental Sb were detected in the native oxide of InSb surface. After the sulfur treatment by ammonium sulfide((NH_(4))_(2)S_(x)), carbon content stays almost constant, but a great deal of the surface oxygen is replaced by sulfur, probably as a surface InSb-sulfide. For the case of the surfce which was sulfur treated during 2min at 25℃, carbon, oxygen and sulfur concentrations at surface were 11%, 6%, and 34%, respectively, and the In/Sb surface ratio was 1.0.