성장기 3급 부정교합 환자에서 악안면 형태에 대한 측모두부계측방사선학적 연구

손우일,장익준,송재철,진병로 영남대학교 기초/임상의학연구소 2001 Yeungnam University Journal of Medicine Vol.18 No.2

When we make treatment plan of class III malocclusion children, it is difficult to determine whether we treat it with orthognathic surgery or without orthognathic surgery. To determine that, we must consider many factors, such as cephalometric analysis, growth pattern, family history, and skeletal age. A Harvold cephalometric analysis is useful in determining the amount of discrepancy by comparing the maxillary unit length with mandibular unit length. We tried this study to help the decision of treatment planning in class III malocclusion children by comparison in class III malocclusion and normal occlusion children using a Harvold analysis. Materials and Methods: The materials for this study consisted of 20 class III malocclusion children. Cephalometric tracing and measurements were performed by one investigator. The control group consisted of 18 normal occlusion children and lateral cephalograms were obtained from 8.5 to 14.5 years old children biannually. The relationships between class III malocclusion group and normal occlusion group were evaluated statistically. Results: The lower anterior facial heights between two groups were not significantly different, although the lower anterior facial heights of class III malocclusion group was higher than those of normal occlusion group in all age groups. The Maxillary-mandibular unit length differences of class III malocclusion group were significantly higher than those of normal occlusion group(p <0.05). Conclusion: A Harvold analysis was useful to make treatment planning for class III malocclusion children.

공공전기자전거 이용 체험에 대한 내외국인의 차이점 분석

손우의(Youyi Sun),조광수(Kwangsoo Cho) 한국디자인학회 2021 한국디자인학회 학술발표대회 논문집 Vol.2021 No.11

東西方國家市場經濟模式比較硏究

孫宇晖,周尙容 한국경영사학회 1999 經營史學 Vol.21 No.-

Hydroxyapatite Powder(Bonesource?)를 이용한 다양한 재건례

손우길,이윤호 대한성형외과학회 2004 Archives of Plastic Surgery Vol.31 No.5

Necessity of more biocompatible bone graft material had brought due to the problems of autologous bone graft & synthetic bone substitute materials. Bonesource is a new biomaterial which can be replaced by natural bone when it is implanted. We reviewed our experience with Bonesource(in various reconstruction of bone defect for wide application. From March 2000 to March 2002 at Seoul National University Hospital, we performed various 7 cases of operation with Bonesource. These cases were bony depression after mass excision, alveolar cleft, frontal and supraorbital rim fracture, orbital deformity, facial asymmetry, bone defect after cranioplasty, depressive scar. In all cases, results were satisfactory without migration, extrusion, resorption during the follow up period (average 14 months). In 1 case, wound healing was delayed due to redissolution of Bonesource by seroma. This was resolved by drainage without significant loss of volume. Its biocompatibility, excellent bony adhesion(osseointegration) and tendency to be replaced by natural bone(osteoconduction) may make it widely used in plastic surgery. The result of long term follow up and practical technique handling this material effectively are needed to evaluate it further.

중족골의 형태와 내반증에 따른 족지 다지증의 간단한 분류

손우길,권성택,이시우 대한성형외과학회 2004 Archives of Plastic Surgery Vol.31 No.4

Polydactyly is a most common congenital anomaly of the foot. As is in the hand, it's classification systems and operative methods are various and complicated, but not much attention is given. We reviewed 129 foot polydactylies of 96 patients since the last 10 years(1993- 2003). Cases were classified morphologically and radiologically by previous classification systems(Wassel's classification, Hirase's classification) and then operative methods, complications, residual deformities were reviewed. Cases from the complications related to surgery including residual deformities were the major concern and 20 cases of unfavorable results were mainly due to varus deformity and metatarsal bone status. Based on our study, cases were reclassified by metatarsal bone status and varus deformity, and in conclusion we found that the new classification system is more helpful in deciding surgical method, predicting complications and residual deformities. Therefore, we suggested a new simple classification system based on the status of metatarsal bone and varus deformity, which is a more suitable system to planning operative method and predicting complication and residual deformity than the previous classification system.

공유 자동차 인터넷 예약 서비스 평가요소에 관한 연구

손우의 ( Sun Youyi ),조광수 ( Cho Kwangsoo ) 한국기초조형학회 2023 한국기초조형학회 학술발표논문집 Vol.2023 No.1

내국인과 외국인의 공공전기자전거 서비스 디자인 비교연구 및 제언

손우의 ( Sun You Yi ),조광수 ( Cho Kwang Soo ) 한국산업디자이너협회 2021 산업디자인학연구 Vol.15 No.3

연구배경 공공 전기자전거 산업의 급속한 발전은 친환경 이동과 "마지막 1킬로미터"와 같은 문제를 해결할 수 있는 해결책을 제시하고 도시 교통체증도 어느 정도 완화시켰다. 공유경제에서 외국인도 중요한 이용자다. 하지만 외국인들이 공유 서비스를 이용할 때 종종 더 많은 문제를 겪는다. 이를테면 계좌를 등록하는 과정이 너무 번거롭고, 서비스를 찾는 시간이 내국인보다 더 오래 걸리며, 내국인에 맞게 설계된 서비스가 많아 외국인의 이용 습관에 맞지 않는 경우가 많다. 그래서 외국인들은 내국인에 비해 공공서비스를 이용하는 데 더 많은 어려움을 겪을 때가 많다. 연구방법 본 연구는 한국과 중국에서 내국인과 외국인으로 구분하여 각국에서 제공되는 공공자전거 비교연구를 진행하였다. 연구과정에서 문헌조사, 면담, 설문조사가 병행되었다. 먼저 공유경제부터 시작해 공공 전기자전거의 발전 과정 및 운영 현황, 이용 현황을 정리하고, 외국인의 공공 서비스 이용 시 발생하는 문제점을 분석하였다. 둘째, 선행연구의 검토에서 공공전기자전거 서비스 평가요소와 사용절차를 정리하고 실증연구를 진행하였다. 마지막으로 자국과 외국 소비자가 공공 전기자전거를 이용하는 과정에서 발생하는 서비스 문제를 토대로 이용 단계별 문제점을 비교하고 개선 방안을 제시하였다. 연구결과 내국인과 외국인은 만족요인 중 유용성과 응답성에서 차이를 보이며, 편리요인 중 편리성과 용이성에 차이를 나타냈다. 안전요인 중에서는 신뢰성에서 차이가 나타났으며, 쾌적 요인 중 쾌적성과 흥미성에 차이 보였다. 결론 본 연구는 만족요인, 편리요인, 안전요인, 편안요인의 4가지 측면에서 기업의 관리와 서비스의 향상을 제안한다. 본 연구는 실증분석을 통하여, 기업이 고객이 서비스를 사용하는 과정 중 실제로 느끼는 것을 더 잘 이해하도록 촉진하고, 기업이 고객의 사용체험의 차이에 맞추어 끊임없이 서비스를 최적화하고, 고객의 요구를 더 잘 만족시키고, 고객의 만족도를 높임으로써 공공 전기자전거 산업이 더 잘 발전할 수 있도록 돕는다. 또한 대부분의 공유경제는 경제적이고 친환경적인 특징을 가지고 있어 본 연구는 다른 공유경제 산업에도 참고가 될 수 있다. Background The rapid development of public electric bicycle industry provides solutions to problems such as green travel and "last mile", and also alleviates urban traffic congestion to a certain extent. In the sharing economy, foreigners are also important users. But when foreigners use shared services, they often encounter more problems. For example, the process of registering an account is too cumbersome, and it takes longer to find services than native people. Many services are designed for native people, which often does not conform to the usage habits of foreigners. Therefore, foreigners often face more difficulties in using public services than native nationals. Methods This study makes a comparative study on the public bicycles provided by Korea and China, which are distinguished by native and foreigner. In the process of research, literature investigation, interview and questionnaire survey go hand in hand. Firstly, starting from the sharing economy, this paper combs the development history, operation status and use status of public electric bicycles, and analyzes the problems existing in foreigners using public services. Secondly, in the discussion of the first study, combing the evaluation elements and use procedures of public electric bicycle service, and conducted an empirical study. Finally, according to the service problems encountered by domestic and foreign consumers in the process of using public electric bicycles, the problems existing in different use stages are compared, and the improvement schemes are put forward. Results Natives and foreigners show differences in usefulness and responsiveness in satisfaction factors, and differences in convenience and ease of use in convenience factors. Reliability performance difference in safety factors, comfort and interest performance difference in comfort factors. Conclusion This study puts forward suggestions for enterprises to improve management and service from four aspects: satisfaction factors, convenience factors, safety factors and comfort factors. Through empirical analysis, this study promotes enterprises to better understand the real feelings of customers in the process of using services. Enterprises constantly optimize services according to the differences in customer experience, better meet customer needs and improve customer satisfaction, thus helping the public electric bicycle industry to develop better. In addition, most sharing economy has the characteristics of economic and environmental protection, and this study can also provide reference for other sharing economy industries.

한국과 중국의 공공자전거 서비스 평가요소에 관한 연구

손우의(Youyi Sun),조광수(Kwangsoo Cho) 한국디자인학회 2021 한국디자인학회 학술발표대회 논문집 Vol.2021 No.5

Secondary Intracranial Hypertension Associated with Alitretinoin Treatment for Twenty-Nail Dystrophy

손우리,윤대관,최미수,박병철,김명화 대한피부과학회 2022 Annals of Dermatology Vol.34 No.6

. 영문 초록 없음

두경부 기저세포암에서 H-Zone과 비H-Zone에서의 임상 및 조직학적 특성

손우리 ( Uri Shon ),염규진 ( Kyujin Yeom ),윤대관 ( Dea Kwan Yun ),김명화 ( Myung Hwa Kim ),최미수 ( Mi Soo Choi ),박병철 ( Byung Cheol Park ) 대한피부과학회 2021 大韓皮膚科學會誌 Vol.59 No.10

Background: Basal cell carcinoma (BCC) is the most common type of skin cancer. However, limited comparative data on the characteristics and prognosis of BCC in the H-zone and non-H-zone exist. Objective: We aimed to compare the clinical, histopathological, and surgical characteristics of BCCs in the head and neck region between the H- and non-H-zones. Methods: We retrospectively reviewed the clinical and histopathological characteristics of 292 head and neck BCC lesions in 275 patients and the characteristics of Mohs micrographic surgery (MMS) of 252 BCC lesions in 239 patients. Results: In the H-zone, 226 lesions (77.4%) were found. Clinically, patients with H-zone BCC, compared to those with non-H-zone, were significantly older (71.6±11.4 years vs. 64.6±13.5 years) and smaller in diameter (10.1±7.1 mm vs. 12.4±9.9 mm). The noduloulcerative type was more frequent in the H-zone, while the superficial and morpheaform types in the non-H-zone. Histopathologically, the infiltrative subtype was particularly noted in the H-zone than the non-H-zone (7.5% vs. 1.5%). Out of 37 BCC patients with prior treatment history, 31 (83.8%) were in the H-zone. Two out of 252 lesions (0.8%) recurred after MMS at our institution. The mean stages of MMS were comparable between the H- and non-H-zones (1.59 vs. 1.45, p=0.135). Conclusion: H-zone BCCs were associated with older age and smaller tumor size compared to the non-H-zone BCCs. The noduloulcerative clinical and nodulocystic pathologic subtypes were the most common in both H-zone and non-H-zone BCCs. (Korean J Dermatol 2021;59(10):735∼741)