상악동을 침범한 함치성 낭종의 내시경을 이용한 치험례

박용희,윤현중,김성원,이상화,Park, Yong-Hee,Yoon, Hyun-Joong,Kim, Sung-Won,Lee, Sang-Hwa 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.3

Dentigerous cysts are the most common type of developmental odontogenic cysts. They form as a result of a separation of the follicle from around the crown of an unerupted tooth. Usually this lesion can be asymptomatic. Such cysts are often discovered accidently on inspection of x-rays. In other advanced cases, cortical bone expansion, displacement of teeth, secondary infection can be observed. The treatment of dentigerous cyst is enucleation. And according to size, location of lesion and environmental structure marsupialization can be considered. However, Marsupialization takes long treatment time and, cystic tissues are remained so secondary surgery may be needed for total removal., Risks of oroantral fistula, damage on maxillary sinus wall and infraorbital nerve can be considered as complications of conventional surgical treatment of cysts located in maxillary sinus. We treated third molar origin dentogerous cyst located in maxillary sinus removing endoscopically both the tooth and an associated dentigerous cyst. We report our clinical experience with literature review.

디젤입자상물질 여과장치의 배기저감성능 효과 분석

박용희,신대윤,Park, Yong-Hee,Shin, Dae-Yewn 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.1

Diesel PM can be controlled using Diesel Particulate Filter, which can effectively reduce the level of soot emissions to ambient background levels. In the Heavy Duty Diesel area, the Continuously Regeneration trap has been widely applied in the retrofit market. As the Special act for the improvement of air quality in the capital area, the retrofit program for DPF to used diesel vehicle has progressed favorably and there are currently over 1,000 of these DPF in use in retrofit applications in korea. These DPF comprise a specially formulated Diesel Oxidation Catalyst upstream of a DPF. The $NO_2$ generated by the DOC is used to combust the carbon collected in the DPF at low temperature. To certificate DPF device that is suitable to domestic circumstances, it is necessary to evaluate exactly the DPF devices according to the regulation of DPF certificate test procedure for retrofit(ministry of environment(MOE) announcement NO. 2005-16). To do so the understand of that regulation like the standard of PM reduction rate is needed. In this study the test procedure including test cycle and BPT test condition was examined and also the test result for specific DPF was analyzed. In every test like field test, PM reduction efficiency test and seoul-10 mode test, no defect could be showed.

IHACRES 모형을 이용한 평창강 유역 내 관측 유량자료의 평가

박용희,유철상,Park,Yong-Hee,Yoo,Chul-Sang 한국방재학회 2008 한국방재학회논문집 Vol.8 No.4

본 연구에서는 IHACRES 모형을 이용하여 충주댐 유역 내 12개 지점에 대한 관측유량자료에 대한 평가를 수행하였다. 특히, IHACRES 모형의 매개변수 중 지형특성 관련 매개변수를 지역화 기법을 이용하여 정량화하고, 이를 대상유역인 충주댐 유역의 여러 수위 관측지점에 적용하는 과정을 함께 수행하였다. 본 연구의 결과를 정리하면 다음과 같다. (1) IHACRES 모형의 매개변수 중 기후특성을 반영하는 매개변수인 c, <TEX>$\tau_w{^0}$</TEX>, f는 유역 전체에 동일하게 결정하여 사용할 수 있음을 확인하였다. (2) IHACRES 모형의 지형특성 매개변수인 <TEX>$t_q,\;t_s,\;v_s$</TEX>는 지형특성인자인 유역면적, 유로연장, 하천경사, 유역경사와의 회귀분석을 통한 지역화를 통해 적절히 추정할 수 있음을 확인하였다. (3) 유역에 대해 일관되게 적용된 기후특성 매개변수와 지역화 과정을 통해 추정된 지형특성 매개변수를 이용하여 충주댐 유역 내 12개 수위관측지점에 대한 관측유량을 평가하였다. 그 결과 상안미, 영월 1 지점의 유량 자료가 상대적으로 정도가 높은 것으로 확인되었고, 영월, 백옥포, 판운 지점의 경우는 유출자료의 품질이 상대적으로 낮은 것으로 파악되었다. 전체적으로 보면 고려된 12개 지점의 관측품질에 많은 차이가 확인되며, 따라서 보다 일관된 관측품질의 확보를 위한 방안의 마련이 시급함을 판단할 수 있었다. This study evaluated the runoff data collected at 12 stream gauge stations of the Chungjoo dam basin using the IHACRES model. Especially, the geomorphology-related parameters of the IHACRES model could be quantified base on the regionalization technique, which have also been applied many stream gauge stations of the Chungjoo dam basin. Summarizing the results is as follows. (1) The climate-related parameters of the IHACRES model c, <TEX>$\tau_w{^0}$</TEX>, and f are found to be estimated and used uniformly over the basin. (2) The geomorphology-related parameters of the IHACRES model <TEX>$t_q,\;t_s,\;and\;v_s$</TEX> are found to be estimated by considering the geomorphological parameters like the basin area, channel length, channel slope, basin slope through the regionalization based on the regression analysis. (3) Using the climate-related parameters applied uniformly over the basin and the geomorphology-related parameters estimated based on the regionalization procedure for each stream gauge station, a total of 12 stream gauge stations have been evaluated with their stream flow measurements. As results, the Sanganmi and Youngwal 1 stream gauge stations have been found to make high quality flow data, but Youngwal, Baekokpo, and Panwoon stations low quality flow data. On the whole, 12 stream gauge stations considered show large differences with their data quality, so a plan for securing more consistent data quality should be prepared imminently.

측두하악장애 환자에서 악관절 세정술과 교합안정장치를 동반한 치료의 효과

박용희,이상화,윤현중,Park, Yong-Hee,Lee, Sang-Hwa,Yoon, Hyun-Joong 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.1

The purpose of this study was to evaluate the clinical outcomes of patients with temporomandibular joint disorder before and after performance of arthrocentesis and stabilization splint therapy. The subjects of this study were 33 patients with limited mouth opening or pain or joint effusion who visited the Department of Oral and Maxillofacial Surgery, St Mary's Hospital, Catholic University of Korea. The arthrocentesis was performed and the stabilization splint was worn immediately after the arthrocentesis. Comparing the clinical outcomes of treatment at the times of first medical examination, 3 months and 6 months later on treatment. The results are as follows; 1. Statistically significant increase in the amount of maximum mouth opening occurred 3 months and 6 months later on treatment. 2. Statistically significant decrease in the average value of pain on test measured by VAS during maximum mouth opening, protrusive movement, right lateral movement, left lateral movement occured 3 months and 6 months later on treatment. The results suggested that arthrocentesis and stabilization splint therapy provide a improvement on patients with temporomandibular joint disorder when the exact diagnosis were provided.

제국과 식민지를 연구하는 또 하나의 시각 : '트랜스내셔널 역사학'과 '다양한 근대성(multiple modernities)'의 관점

朴龍熙(Park Yong-hee) 역사학회 2009 역사학보 Vol.0 No.203

가이드된 순차 RANSAC에 의한 다중 호모그래피 추정

박용희(Yong-Hee Park),권오석(Oh-Seok Kwon) 한국콘텐츠학회 2010 한국콘텐츠학회논문지 Vol.10 No.7

본 논문은 시점을 달리 하는 두 이미지 사이의 다중 호모그래피 관계를 RANSAC을 이용하여 동시에 추정하는 새로운 방안을 제안한다. 이상치가 많이 포함된 데이터에 대해서도 강건한 파라미터 추정이 가능한 RANSAC 알고리즘은 단일 모델에 대해서만 적용되는 제약을 가진다. 따라서, 이미지에 존재하는 여러 평면의 2D 투영 변환 관계들을 추정하기 위해서는 RANSAC 알고리즘을 순차적으로 수행해야 한다. 이 과정에서 데이터에 지속적으로 포함되는 이상치들은 모델 추정을 느리게 한다. 또한, 모델들은 적합치 비율에 의해 순차적으로 추정되기 때문에 알고리즘의 병렬화가 어렵다는 문제가 있다. 본 논문에서는 RANSAC 알고리즘의 수행 과정에서 찾아낸 부분적인 모델 관계를 이용하여 반복 시도 횟수를 줄이고 다중 호모그래피들을 동시에 추정할 수 있는 가이드된 순차 RANSAC 알고리즘을 제시한다. This study proposes a new method of multiple homographies estimation between two images. With a large proportion of outliers, RANSAC is a general and very successful robust parameter estimator. However it is limited by the assumption that a single model acounts for all of the data inliers. Therefore, it has been suggested to sequentially apply RANSAC to estimate multiple 2D projective transformations. In this case, because outliers stay in the correspondence data set through the estimation process sequentially, it tends to progress slowly for all models. And, it is difficult to parallelize the sequential process due to the estimation order by the number of inliers for each model. We introduce a guided sequential RANSAC algorithm, using the local model instances that have been obtained from RANSAC procedure, which is able to reduce the number of random samples and deal simultaneously with multiple models.

한국인의 중국문화 인식

박용희(Yong-Hee Park) 한국문화관광학회 2003 문화관광연구 Vol.5 No.1

In this paper travel writings are treated as a representation and appropriation of other culture by tourists. By analyzing six Korean’s travel writing it reveals that the Korean tourists showed the tendency to admit Chinese culture as an other culture and went so far as to demonstrate their sympathy to the Chinese and belief in the past and present of the Chinese history. And in an understanding of China their viewpoint was filled with the nationalistic emotionalism. Therefore, they remembered the activities of the Korean nationalists in China. But each tourist situation expresses a distinct range of the concerns with difference. What is evident is that the sexual differences is conducive to the heterogeneity of the Korean perception of China. Especially women paid attention to the seemingly trivial affairs such as everyday life of common people and the state of women in China.

한국 및 미국 기업의 의사결정에 미치는 기업환경요인에 관한 비교연구: 정부정책 및 관광환대산업을 중심으로

박용희 ( Yong Hee Park ) 대한관광경영학회 2005 觀光硏究 Vol.20 No.1

19세기 유럽인들의 동아시아 인식

박용희(Park Yong-Hee) 동양사학회 2009 東洋史學硏究 Vol.107 No.-

The aim of this paper is to trace a continuous history of european image of East-Asia as an other culture. By analyzing five travel writings in 19th and early 20th century it reveals that the european visitors showed the tendency to admit east-asian culture as an other culture and went so far as to demonstrate their sympathy to the people. But their attitude toward East-Asia was far from objective. There can be no doubt that the european perceptions of East-Asia were all evidently drawn from their own ideas and prejudices about another culture. So in this paper orientalism is treated as a tradition of the european prejudice or prepossession about the non-western world. But the object of this paper is not to describe a continuous history of orientalism as a european prejudice, nor is it to identify a unified and consistent meaning of the notion of the East-Asia in Europe. Five travel writings were analysed on the assumption that each orientalist situation expresses a distinct range of the concerns with differences. What is evident is that the visitors in the early 19th century were comparatively free from the hegemonic ascendancy or the air of superiority prevailing in the era of imperialism. Further, the sexual differences is conducive to the heterogeneity of their perceptions of other culture. Even so, we can find the persistent moment of orientalism in the viewpoint taken by the european visitors. Ultimately they failed in avoiding completely the position as europeans. To be sure, their viewpoint was not filled with the european unilateral will of power. Nevertheless, their attitude toward the East-Asia was quite contradictory. Behind their acceptance with the east-asian culture as oneself they did not abandon the impression that the East-Asia was regressive. Though they tried to keep distance with the politics, they were not reluctant to reveal the pride in the modern european culture. So it is safe to say that their viewpoint of East-Asia was basically eurocentric.

전압원 방식으로 동작하는 제주-해남 HVDC의 성능해석

박용희(Yong-Hee Park),조윤호(Yun-Ho Cho),최준영(Jun-Young Choi),한병문(Byung-Moon Han) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7

본 논문에서는 현재 전류원 HVDC로 연계되어있는 제주-해남 전력계통을 전압원 HVDC로 대체하였을 경우 동특성을 분석한 내용에 대해 기술하고 있다. 동적특성분석을 위해 EMTDC를 이용한 시뮬레이션모델을 개발하고 전압원 HVDC가 일정조류제어와 주파수제어를 수행할 때 유무효전력의 제어특성을 분석하였다. 전압원 HVDC 시스템은 전류원 HVDC와는 달리 컨버터 자체로 유무효전력을 독립적으로 제어할 수 있어 동기조상기와 캐패시터뱅크 같은 무효전력보상설비를 필요로 하지 않는다. 본 연구결과는 향후 전압원 HVDC 시스템의 설치를 검토할 때 활용 가능할 것으로 보인다.