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.

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.

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.

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.

Rail-to-Rail 입력단과 출력단을 갖는 3 Ⅴ CMOS 연산증폭기의 최적 설계에 관한 연구

박용희(Yong Hee Park),황상준(Sang Joon Hwang),성만영(Man Young Sung),김성진(Seong Jeen Kim) 대한전기학회 1995 대한전기학회 학술대회 논문집 Vol.1995 No.7

최소자,김염자 교수 정년기념특집호 : 학술발표논문 ; 초기 한국사학(韓國史學)의 오리엔탈리즘 -실증사학과 유물사학의 과학관과 민족사 인식의 문제를 중심으로-

박용희 ( Yong Hee Park ) 이화사학연구소 2005 梨花史學硏究 Vol.0 No.32

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

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.

이슬람 문화의 역사적 이해

박용희(Yong hee Park) 한국독일사학회 2001 독일연구 Vol.- No.1

Unter Ablehnung des Fachverständnisses der Orientalistik, das den Vorrang linguistischer Studien betonte, unternahmen einige Islamwissenschaftler wie J. Wellhausen, I. Goldziher, M. Hartmann, C. H. Becker zwischen 1880-1930 eine historische Rekonstruktion des islamischen Orients. Sie betrachteten den islamischen Orient nicht mehr als eine gegnerische politische Macht oder als eine exotische und seltsame Gröβe im Nahen Osten, sondern als eine kulturelle Einheit, die historisch entstanden sei. So entstand eine Grundlage für das rationale Verstehen der fremden Welt. Man kann dennoch nicht sagen, dass ihre Arbeit in völlig neutraler und objektiver Weise erfolgte. Es war bei den Akademikern trotz ihrer objektivistischen Zielsetzung unvermeidbar, den Islam überwiegend aus eigener Perspektive zu verstehen. Vier grundlegende Denkstrukturen spielten bei ihrer Islamwahrnehmung entscheidende Rolle. Erstens können Religionen als ein von Menschen geschaffenes Glaubens- und Handlungssystem angesehen werden. Unter dieser säkularistischen Prämisse beschäftigten sie sich mit der ethischen Seite des Islam. Ferner fanden sie im Nationalstaat ein ideales politisches System der Menschheit. So spielte die nationalstaatliche Implikation bei ihrer Islambetrachtung eine große Rolle. Und die Wissenschaftler konnten nicht von der damaligen Forderung nach ökonomischem Interesse Deutschlands im Orient frei sein. Am wichtigsten ist ihre universalhistorische Perspektive, die die allgemeine Entwicklung der Menschheit zur modernen Gesellschaft voraussetzt. Sie unterschieden eine fortschrittliche Entwicklung in den Anfängen der islamischen Zivilisation und eine Stagnation und Rückständigkeit in der Gegenwart. Insbesondere waren sie der Meinung, dass sich der Orient in seiner gegenwärtigen Lage in einem religionsbedingt erstarrten und rückständigen Zustand befände, so dass eine religiöse Reform dringend erforderlich sei. Trotz kritischer Vorbehalte sollten diese Denkstrukturen nicht bloß als eine steife Denkweise eingeschätzt werden, die von allen denkbaren Vorurteilen durchdrungen ist. Ihre Vorstellung wurde im Vergleich zu anderen damaligen Islamkennern durch ihre liberale und universalistische Einstellung abgemildert. Es herrscht auch ein Humanismus vor, der die Andersartigkeit der anderen Kultur verstehen wollte.

전압원 HVDC를 이용한 제주-해남 계통 특성 분석

박용희(Yong-Hee Park),백승택(Seung-Taek Baek),최준영(Jun-Young Choi),한병문(Byung-Moon Han) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4

본 논문은 전류원 HVDC로 연계되어 있는 제주-해남 계통을 전압원 HVDC로 연계하였을 경우에 대한 특성 분석에 대해서 기술하고 있다. 기존의 제주­해남 HVDC시스템은 교류계통 전압의 외란에 의해서 전류실패가 발생할 수 있으므로 연계되는 교류계통 모선에 무효진력보상설비들이 설치되어 있다. 따라서 기존의 전류원 HVDC 시스템은 대용량의 전력을 전송할 수 있다는 장점이 있는 반면 추가로 무효전력 보상설비들이 설치가 되어야 한다는 단점이 있기 때문에 최근에 선진국에서는 전압원 HVDC 시스템에 대한 연구가 활발히 진행되고 있다. 전압원 HVDC 시스템은 계통사고 또는 교류전압강하로 인한 전류실패가 발생하지 않고, 무효전력을 HVDC 시스템의 용량내에서 유효전력과 독립적으로 제어될 수 있기 때문에 추가로 무효전력 보상설비가 필요하지 않다는 장점이 있다. 본 논문에서는 제주-해남 계통을 전압원 HVDC로 연계하는 모델을 PSCAD/EMTDC를 이용해서 개발하였다. 개발된 시뮬레이션 모델은 전압원 HVDC를 이용해서 제주-해남 계통을 연계하였을 경우에 대한 동특성을 분석하는데 유용하리라 사료된다.