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나혜정,윤규호,정정권,배정호,김해린,조규홍,신재명,백지선,Na, Hye-Jung,Yoon, Kyu-Ho,Cheong, Jeong-Kwon,Bae, Jung-Ho,Kim, Hae-Lin,Jo, Kyu-Hong,Shin, Jae-Myung,Baik, Jee-Seon 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.4
Sialolithiasis is the most commom disease of salivary gland. The main symptoms are pain and swelling of the involved gland during eating. It can occur at any age but patients in their third to fifth decade present most cases. Males are more frequently affected than females. Most sialoliths are located within the duct system of the submandibular gland. Submandibular sialoliths close to the hilum of the gland tend to become large and ovoid shape, whereas sialoliths in the duct tend to be elongated. Commonly, sialoliths measure from 1 mm to less than 10 mm, and larger than 15 mm are considered rare. In one case we have removed a giant sialolith which was located in a wharton's duct and in the other case we have removed multiple sialolith including a giant sialolith which were also located in a Wharton's duct. We report these 2 cases with literature reviews.
나혜정 ( Hae Jung Na ),김순호 ( Soon Ho Kim ) 국제지역학회 2015 국제지역연구 Vol.19 No.3
본 연구는 세계 46개국을 대상으로 법 제도와 주식 시장 효율성 사이의 관계를 연구하였다. Lo and MacKinlay (1988)의 분산비 (Variance Ratio)를 주식 시장 비효율성 대용치로 이용하여 분석한 결과는 다음과 같다. 첫째, 46개국 중 34개국의 주가지수는 랜덤워크를 따르지 않아 이들 국가의 주식시장은 비효율적인 것으로 확인되었다. 둘째, La Porta et al. (1998)의 법체계 분류법에 따라 영국식, 프랑스식, 독일식, 스칸디나비아식으로 분류하여 분산비 평균 차를 비교한 결과, 프랑스식 법체계를 따르는 국가의 주가 지수가 더 큰 비효율성을 보였고, 독일식과 스칸디나비아식 법체계 국가들의 주가 지수는 보다 효율적인 것으로 확인되었다. 셋째, 선진국과 개발도상국으로 나누는 경우, 개발도상국 주식 시장이 선진국보다 통계적으로 유의한 수준에서 더 큰 비효율성을 보였다. 넷째, 시장 비효율성 정도와 법 제도 관련 변수를 회귀 분석한 결과, 회계 기준 및 재무정보 공시 등 정보 투명성 관련 요인이 주식 시 장 효율성과 통계적으로 유의한 관계를 지니는 것으로 나타났다. This paper analyzes the effect of legal and institutional aspects on country-level stock market efficiency. With Lo and MacKinlay (1988)`s variance ratio to measure inefficiency, this paper finds that 32 out of the 46 sample stock market indices do not follow random walks and are inefficient. In addition, this paper categorizes the sample countries based on their legal and macroeconomic backgrounds and compares their variance ratios. The empirical results give evidence that the French law countries are marked with higher inefficiency, while the Scandinavian and German law countries` stock market indices are closer to following random walks. Also, advanced economies are noted with significantly lower inefficiency, compared to emerging economies. Lastly, this paper investigates which legal and institutional aspect is related to market efficiency and empirically presents that information transparency-related proxies are most significantly related to stock market efficiency.
최민혜,윤규호,정정권,박관수,신재명,김해린,나혜정,Choi, Min-Hye,Yoon, Kyu-Ho,Cheong, Jeong-Kwon,Park, Kwan-Soo,Shin, Jae-Myung,Kim, Hae-Lin,Na, Hye-Jung 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.3
Solitary fibrous tumor (SFT) is a neoplasm that arises most commonly in pleura. Although SFT occasionally occurs in extrapleural locations, the incidence in the oral cavity is rare. SFT is benign in almost cases and surgical excision is the effective treatment. SFT occurred in the left cheek of a 60-year-old man presented with a painless submucosal mass. The tumor was surgically removed. Immunohistochemical study showed that tumoral cells were negative for SMA, S-100, but positive for Bcl-2, CD34. SFT is easily over-diagnosed if strict criteria are not carefully applied, and strict diagnostic criteria are necessary to avoid confusion of SFT with more aggressive lesions.