비골 골절에 대한 최근 5년간의 후향적 연구

오희균,박영준,김현섭,류재영,국민석,박홍주,유선열,Oh, Hee-Kyun,Park, Young-Jun,Kim, Hyun-Syeob,Ryu, Jae-Young,Kook, Min-Suk,Park, Hong-Ju,Ryu, Sun-Youl 대한구강악안면외과학회 2008 대한구강악안면외과학회지 Vol.34 No.2

Purpose: This study was performed to investigate the incidence, types of fracture, treatment, associated fracture and complications in patients with nasal bone fracture. Materials and methods: Clinical examination, patient's records and radiographic images were evaluated in 230 cases of nasal bone fractures who were treated at the Department of Oral and Maxillofacial Surgery, Chonnam National University Hospital for recent 5 years; from January 2002 to December 2006. Results: 1. The age of patient was ranged from 4 to 77 years (mean age=36.6 years); Males was 75.7% (n=174), and females 24.3% (n=56). 2. The cause of the nasal bone fracture in this study was a fall or slip down (28.8%, n=66), sports accident (26.0%, n=60), fighting (21.3%, n=49), traffic accident (9.6%, n=22), industrial trauma (7.8%, n=18), and the others (6.6%, n=15). 3. For the patterns of fracture, simple fracture without displacement occured in 10.4% (n=24). Simple fracture with displacement without septal bone fracture was found in 49.5% (n=114). Simple fracture with displacement in company with septal bone fracture showed in 32.6% (n=75). Commiuted fracture with severe depression was presented in 7.4% (n=17). 4. The reduction the displaced nasal bone was carried out in 2 to 10 days (mean 6.8 days) after the injury. 5. Nasal bone fracture associated with Le Fort I fracture (6.5%, n=6.5), Le Fort II fracture (7.4%, n=17), Le Fort III fracture (1.3%, n=3), NOE fracture (13.9%, n=32), ZMC fracture (17.4%, 40), maxillary bone fracture (8.3%, n=19), orbital blow-out fracture (15.7%, n=36), frontal bone fracture (1.3%, n=3) and alveolar bone fracture (10.9%, n=25). 6. The major type of treatment method was closed reduction in 90% (n=207), open reduction in 3% (n=7), and observation in 7% (n=16). 7. There were some complications such as ecchymosis, hyposmia, hypo esthesia and residual nasal deformity which are compatible. Open rhino-plasty was conducted for 3 patients who had residual nasal deformity. Conclusions: These results suggest that most of nasal bone fractures are occurred physically active aged groups(age 10-49 years) and could be treated successfully with closed reduction at 7 days after the injury.

서울시 레스토랑의 추천의도 결정요인 분석

오희균(Oh, Hee-Kyun) 한국관광레저학회 2015 관광레저연구 Vol.27 No.1

포스트 코로나 시대 관광활동에 따른 시장세분화 연구

오희균(Hee-Kyun Oh) 한국무역연구원 2022 무역연구 Vol.18 No.6

Purpose – The purpose of this study is to understand and predict changes in the behavior of domestic tourists by implementing market segmentation according to tourist activities in the post Covid-19 era, and identifying the demographic characteristics and tourist behaviors of each segment. Design/Methodology/Approach – A two-step cluster analysis was conducted by applying eight items from the data of the 'Korea National Tourism Survey 2021', and then the five types of 'Gourmet tasting (GT)', 'Eco-healing (EH)', 'Recreational activities (RA)', 'Shopping experience (SE)', and 'History exploration (HE)' were derived. As a result of cross-tab and ANOVA, there were obvious differences in demographic characteristics and tourist behaviors among types. Specifically, the results of estimating the core determinants of each segmented market through the multinomial logit model are as follows. Findings – First, popularity of tourism destinations and website information are important for GT tourists. Second, ET tourists have high satisfaction with transportation convenience, human service, and tourism destination crowdedness, but spend less on tourist expenditures and the number of trips. Third, RA tourists place value on lodging trips with families, but the participation of those in their 50s and older tends to be low. Fourth, SE tourists have a lot of high-income earners residing in non-metropolitan areas, and are dissatisfied with the tourism destination crowdedness. Fifth, HE tourists consider the popularity of tourism destinations and family lodging trips as important. Research Implications – In this study, a single type regarding the natural tourism resource was not derived. However, there was a high correlation between GT, EH, and RA types, which implies that an appreciation of nature and scenery functions as a foundational element of tourism activities.

CVM을 이용한 수질 개선의 경제적 가치평가

오희균(Oh, Hee-Kyun),이희찬(Lee, Hee-Chan),차주영(Cha, Joo-Young) 한국호텔외식관광경영학회 2015 한국호텔외식경영학회 학술발표논문집 Vol.- No.-

In this study, we aimed to estimate value of water quality improvement in terms of bloom-forming algae case. Evaluation subjects were chosen as general public who had an experience on the tap water usage. This study set up six price categories, which are 5,000, 10,000, 20,000, 30,000, 40,000 and 50,000 Korean won (KRW), through preliminary inquiries and then conducted nationwide surveys aimed at major cities. From those investigations, a total of 1,745 samples were used to conduct the empirical analyses. Main results on applying double-bounded dichotomous choice of contingent valuation method (CVM) are as follows. First, the high social class recognized by the general public, postive attitude toward environmental protection, and high level of understanding about sewage treatment process were statistically significant to willingness to pay (WTP) in support of waterbloom removal. On the other hand, the people who experienced contaminated tap water, have a negative attitude toward environmental protection, or believe that current water costs are expensive, did not favor national project so that WTP was on the lower level. Economic benefit by water quality improvement indicates roughly 590 billion KRW.

전문대학 항공서비스 전공자의 진로장벽이 역기능적 진로사고에 미치는 영향

오희균(Oh, Hee-Kyun),강혜순(Kang, Hye-Soon) 한국관광레저학회 2014 관광레저연구 Vol.26 No.5

식수품질 저해요인 중 관리 우선순위 도출에 관한 연구

오희균 ( Hee Kyun Oh ),이희찬 ( Hee Chan Lee ) 한국물환경학회 2016 한국물환경학회지 Vol.32 No.1

The main purpose of this study was to derive managerial priority for pollutants in drinking water using the Delphi technique and analytic hierarchy process (AHP) method. We collected fundamental existing items based on a literature review for water pollutants, and deduced a total of 36 sub-items from nine core sectors, as follows: organic matter; inorganic substances; pathogenic organisms; chemicals; heavy metals; radioactive substances; sediment deposits; heat; and oil, and then conducted the first round of an expert study to ensure that objective indicators properly evaluate major issues for management of for drinking water quality. In the following round, the necessity and importance assessments of adjusted items were implemented using a content validity ratio index. Finally, items modified by Delphi surveys were applied to AHP. We computed weighted values by pair-wise comparison of sub-items and each of five sectors modified by the second round. According to the results of AHP, the managerial priority for pollutants in drinking water was as follows; while heavy metal placed first in importance, pathogenic organisms came second, followed by inorganic substances, organic matter and chemical substances from the sector perspective.

동정맥성 기형환자에 있어서 Halothane 마취하 외과적 절제술후에 발생한 전기성 간염

오희균(Hee Kyun Oh),김건중(Geon Jung Kim),윤영수(Young Su Yun),박재관(Jae Kwan Park),유선열(Sun Youl Ryu) 대한악안면성형재건외과학회 1988 Maxillofacial Plastic Reconstructive Surgery Vol.10 No.1

This is a case report of fulminant hepatitis following feeding artery ligation and surgical excision of arteriovenous malformation on left mandibular body in 27-year old female patient under halothane anesthesia. On the 11th postoperative day, sudden high fever (39℃) with nausea, abdominal pain and insomnia were noted. The serum transaminase (SGOT, SGPT) levels were markedly elevated. She had received 10 pints of blood during operation, but HB antigens were negative. On the 14th postoperative day, generalized jaundice, hypoglycemia and oliguria with renal dysfunction were noted. She was diagnosed as fulminant toxic hepatitis with hepatorenal syndrome possibly due to halothane in semicomatous mental state with ascites on the 17th postoperative day, and then transferred to the dept. of internal medicine. About 54 days after operation, she was discharged with symptomatic improvement and almost normal laboratory data through the symptomatic and supportive treatment without corticosteroid. UHFH (Unexplained Hepatitis Following Halothane) or halothane hepatitis has been known as a rare but significant complication following halothane anesthesia. Halothane hepatitis remains controversial in incidence, etiology, differential diagnosis with other hepatitis and prevention. More research and identification on halothane hepatitis are recommended in that halothane is to be the one of significant causes of acute hepatic toxicity following surgery under halothane anesthesia and at present is the most widely used anesthetic agent for a great variety of surgical procedure in our department of oral and maxillofacial surgery.

개에서 구내 신연장치를 이용한 치조골증대술

오희균(Hee Kyun Oh),오유근(Yu Keun Oh),정현(Hyun Jung),유선열(Sun Youl Ryu),최홍란(Hong Ran Choi) 대한구강악안면외과학회 1999 대한구강악안면외과학회지 Vol.25 No.3

The aim of this study was to show the feasibility and potential advantages of using the new intraoral distraction device for alveolar ridge augmentation. Four adult mongrel dogs were used. We designed intraoral distraction device for augmentation of vertical height of the edentulous ridge. The left upper and lower premolars and first molars were extracted and an alveoloplasty was performed to simulate an atrophic ridge. After 12 weeks of healing, an osteotomy was made and the intraoral distraction device was applied in order to distract alveolar segment upward. A permucosal pin was exposed intraorally. Latency period was allowed for 7 days before distraction began. The distraction device was activated with a rate of 1.0 ㎜/day for 9 days. At 2 weeks after completion of the distraction, the device was removed. At 8 weeks after distraction, the animals were sacrificed. Clinical, radiographic, and histologic examinations were performed. Macroscopically, no significant abnormalities such as infection were occurred in the distracted area. The average distracted distance was 7.6±1.4 ㎜ and new bone was formed in the distracted gap in all animals. Bone remodeling without crestal bone resorption was observed in the distracted area. In several animals, fibrous tissue was present in the buccal cortical bone area. These results suggest that the intraoral distraction device may have the potential for use in augmentation of the atrophic edentulous ridge.

다변량 기법을 활용한 항공 서비스 전공자의 진로장벽과 진로준비행동 간의 관계 분석

오희균 ( Hee Kyun Oh ),주승우 ( Seung Woo Choo ) 한국호텔리조트학회(구 한국호텔리조트카지노산학학회) 2015 호텔리조트연구 Vol.14 No.1

The aim of this study was not only to examine the relationship between career barrier (CB) and career preparation behavior (CPB) of college students majoring in aviation operation services, but also the differences of CB among their clusters based on CPB. Multivariate techniques using data collected from 287 surveys were utilized, and main results are as follows. (1) According to canonical correlation analysis focused on relationships between the sub-dimensions of related factors, CB, such as ‘lack of interest (LI)’, ‘lack of carrier information (LCI)’ and ‘interpersonal difficulty (ID)’ were negatively correlated to CPB regarding ‘job preparation’, ‘career search’ and ‘information collection’ in the effect size order. (2) A two-step cluster analysis revealed 4 groups reflecting characteristics, including ‘pursuit of perfection’, ‘ordinariness’, ‘lack of implementation’, and ‘insincerity’, and moreover, hit ratio of discriminant analysis showed classification accuracy of 96.9%. (3) As a result of a multivariate analysis of variance applied to CB among clusters, there were significant differences in terms of ‘lack of self-clarity’, ‘anxiety about the future’, ‘troubles with parents’, and ‘financial difficulties’ as well as LI, LCI, and ID.

치조제확대골절단술(RIDGE EXPANSION OSTEOTOMY)을 이용한 임프란트의 매식

오희균(Hee-Kyun Oh) 대한치과의사협회 1996 대한치과의사협회지 Vol.34 No.3