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안면 중앙부 골절 (Midface fracture)의 임상통계학적 연구
이승엽(Seung Yeop Lee),박관수(Kwan Soo Park),김태열(Tae Youl Kim),정정권(Jung Kwon Cheong),전인성(In Seong Jeon),윤규호(Kyu Ho Yoon) 대한구강악안면외과학회 2000 대한구강악안면외과학회지 Vol.26 No.4
With the increase of industrialization, leisures, sports activities and traffic, the risk of trauma has increased markedly. Midfacial bones are relatively common sites of trauma, and are difficult sites of correct reduction and reconstruction, because midface is composed of mostly thin cortical bone surrounding cavities filled with either air or fat with discrete areas of bony condensation. A clinical study on 208 patients with midfacial bone fracture who visited Sanggye Paik Hospital during 5 years(1990~1995) was done by analyzing sex, age, cause, fracture site, treatment method, complication and involvement of other body part, etc. The results obtained were as follows: 1. The occurrence was more frequent in male than in female with ratio of 2.7 : 1 and most frequently in twenties. 2. Traffic accident was the most common cause of midface fractures. 3. Zygoma was the most frequently occurred site(50%) of midface fractures. 4. Simple fracture(75%) was more frequently occurred than compound fracture(25%). 5. As treatment method, open reduction(76.4%) was used more frequently than closed reduction(23.6%) 6. Generally, operations are done in 5 days after admission(59.1%), and intermaxillary fixation was done in 78.4% of cases. 7. Teeth and alveolar bone damages were occurred in 32.2% of cases. 8. Other injuries that were related to midface fracture occurred in 63.3% of cases. 9. Post-operative complications occurred in 9% of cases.
황재홍,이승엽,박관수,정기훈,전인성,윤규호,Hwang, Jae-Hong,Lee, Seung-Yeop,Park, Kwan-soo,Jeong, Ki-Hoon,Jeon, In-seong,Yoon, Kyu-Ho 대한악안면성형재건외과학회 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.4
The mucoepidermoid carcinoma is classified as either well, moderately, or poorly differentiated. The criteria used to classify the lesions are discussed, and pathologic features are illustrated. The most important factors in prognosis are : 1. degree of histologic differentiation, and 2. presence or abscence of tumor on the lines of surgical excision. Recurrences rates are correlated with histologic differentiation. Stewart, Foote, and Becker in 1945 coined the term "mucoepidermoid tumor" to discribe an unusual salivary neoplasm containing epidermoid and mucus-secreting cells which was thought to arise in salivsary gland ducts. The treatment of the mucoepidermoid carcinoma is chiefly surgical, although recent data have shown favorable responses to radiation therapy. Currently, surgery followed by radiation treatment is recommended for intermediate-grade and high-grade tumors ; low-grade tumors can be managed by surgery alone. Authors present a case of mucoepidermoid carcinoma managed with wide surgical resection and postoperative irradiation and showing a good clinical result with review of literatures.
민대환,이승엽,임성택,Min Dai-Hwan,Lee Seung-Yeop,Rim Seong-Taek 한국데이터전략학회 2006 Journal of information technology applications & m Vol.13 No.2
As the number of Internet users increases, online shopping malls are gradually flourishing and sales are continuously growing. However, since consumers are not able to check what they purchase when buying products on the Internet, they are bound to have higher risk perception than buying directly from off-line stores. Especially, sporting goods require a special attention because a preliminary test is important. Therefore, the risk perception is much higher when people purchase sporting goods online. This study first identifies the multi-dimensionality of risk perception. Then, it investigates whether online purchasing experience of sporting goods makes differences in the level of risk perception. In addition, it examines whether the risk perception by those who had an experience in purchasing sporting goods online affects the customer satisfaction. This study has identified five dimensions in the concept of risk perception, such as financial risk, performance risk, security risk, delivery risk, and psychological/physical risk. A statistical analysis shows that people without an experience in purchasing sporting goods online have perceived significantly higher performance risk, security risk, and psychological/physical risk than those with online purchasing experiences. Finally, this study has found that delivery risk, financial risk, and psychological/physical risk have significant negative influences on the customer satisfaction.
방석준,황재홍,이승엽,이창진,전인성,윤규호,Bang, Seok-Jun,Hwang, Jae-Hong,Lee, Seung-Yeop,Lee, Chang-Jin,Jeon, In-Seong,Yun, Gyu-Ho 대한악안면성형재건외과학회 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.4
Mediastinum is the space located between the right & left lung lobes in the center of the thorax, and contains many vital organs such as heart, aorta, trachea, esophagus, vagus nerve, lymphatics. So the infection of mediastinal space causes a serious and potentially fatal process. Like other infections, surgical drainage, aggressive antibiotic therapy and supportive care are recommended for optimal outcome. Airway management in the presence of the neck, glottic edema, elevation of the tongue is a formidible problem especially in the case from odontogenic origin. We have recently encountered such a case resulting in a number of local and systemic complications.
정채균(Chae-Kyun Jung),양병모(Byung-Mo Yang),강지원(Ji-Won Kang),이승엽(Seong-Yeop Lee),원영진(Young-Jin Won) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper analyses the EMTDC modeling structure of 22.9㎸ 50MVA HTS cables. It proposes the new modeling structure with electric model and thermal model. The modeling method considering cable sections separated by very short section and long section is also proposed for transient analysis by increasing of sectionalized critical temperature. Finally, this paper analyses current and temperature distribution at each layer according to modeling methods between conventional modeling and newly proposed one in case of external single line to ground fault.