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이상현(Sang-Hyun Lee),박진민(Jin-Min Park),문상필(Sang-Pil Mun),서기영(Ki-Young Suh) 한국조명·전기설비학회 2003 한국조명·전기설비학회 학술대회논문집 Vol.2003 No.-
For small capacity rectifier circuits such as these for consumer electronics and appliances, capacitor input type rectifier circuits are generally used. Consequently, various harmonics generated within the power system become a serious problem. Various studies of this effect have been presented previously. However, most of these employ switching devices, such as FETs and the like. The absence of switching devices makes systems more tolerant to over-load, and brings low radio noise benefits. We propose a power factor correction scheme using a LC resonant in commercial frequency without switching devices. In this method, it makes a sinusoidal wave by widening conduction period using the current resonance in commercial frequency, Hence the harmonic characteristics can be significantly improved, where the lower order harmonics, such as the fifth and seventh order are much reduced. The result are confirmed by the theoretical and experiment implementations.
윤성필(Sung-Pil Yoon),임성욱(Sung-Uk Lim),박만희(Man-Hee Park),조인희(In-Hee Cho) 한국엔터테인먼트산업학회 2010 한국엔터테인먼트산업학회논문지 Vol.4 No.3
본 연구는 선행연구에서 조사된 핸드폰의 고객요구속성을 Kano 모델의 품질특성에 적용하여 시간의 흐름에 따라 어떤 변화가 있는지를 살펴보고자 한다. 또한 고객들의 새로운 요구속성이 나타났는지도 함께 살펴보고자 한다. 많은 문헌과 선행연구에서 나타나고 있는 시간에 따른 품질특성의 이동이 매력적 품질에서 일원적 품질로 일원적 품질에서 당연적 품질로 변화하는 진부화(陳腐化)현상이 나타나는지도 함께 살펴보고자 한다. In this study, previous research (Sung-Uk Lim, 2004) surveyed in customer demand for mobile phones the quality characteristics of properties applied to the Kano model, the flow of time, depending on whether any changes will be discussed. In addition, our customers" new requirements will be examined along with the property map appeared. The movement of time-dependent quality characteristics appeared in many previous studies Obsolescence Phenomenon - from Attactive Quality Element to One-Dimensional Quality Element, from One-Dimensional Quality Element to Must-Be Quality Element - may appear be examined together.
박성필(Park Sung-Pil) 부산대학교 한국민족문화연구소 2008 한국민족문화 Vol.31 No.-
This study discussed 'modernity' in Lee Sang's poetry. A human being runs life in the fantasies which are linked with his desire. There are some importance poet in 1930's, but we must attend his poetry. Because the 'modernity' in his writing is very unique. In the concrete, he expressed 'sense of inferiority' and 'distrust' by the medium of writing. I think that reason are one way of resistance to Japanese imperialism. In chapter 2, I examined 'sense of inferiority' in Lee Sang's poetry. Therefore I make certain of special aspect. He expressed 'self-command' while expressed 'sense of inferiority' against modernity. In chapter 3, I wished to make clear the way of resistance. On the concrete, the way related with a feeling of uneasiness to attachment. In last chapter, I wished to examined 'a form of configured modernity'. His poetry is great in the way, that pervert the modem world. For instance, special number '13' or sign' ?/\?' is presumed that way.
크론병으로 인한 십이지장-대장 누공의 Endoloop과 Hemoclip을 이용한 수술 전 내시경적 결찰 증례보고
박미성 ( Mi Sung Park1 ),김원진 ( Won Jin Kim ),허지혜 ( Ji Hye Huh ),박수정 ( Soo Jung Park ),홍성필 ( Sung Pil Hong ),김태일 ( Tae Il Kim ),김원호 ( Won Ho Kim ),천재희 ( Jae Hee Cheon ) 대한소화기학회 2013 대한소화기학회지 Vol.61 No.2
Duodeno-colonic fistula is an enterocolonic fistula that occurs as a complication of Crohn`s disease. Symptoms of duodeno colonic fistula are similar to those of Crohn`s disease, such as weight loss and diarrhea. The treatment of choice is surgery, although medical treatment may also be considered. However, surgery is recommended when all available medical therapies have been ineffective. In this case, we report a secondary duodeno-colonic fistula due to Crohn`s disease that was temporarily managed by an endoscopic procedure with a detached endoloop and hemoclips as a bridging therapy to final surgical repair.
박재필 ( Jae Pil Park ),김민영 ( Min Young Kim ),황성원 ( Sung Won Hwang ),김형성 ( Hyoung Sung Kim ) 한국도서학회 2014 韓國島嶼硏究 Vol.26 No.3
MOTIE(Ministry of Trade, Industry & Energy) aims to build a Southwest 2.5GW offshore wind farm. The job will require help from the government, electric operator and manufacturers. The domestic offshore wind farm market will boost global competitiveness up until 2019. This research analyzes the economic impact of the offshore wind farm project. The local acceptance in terms of production, employment and value added are expected to be maximized. According to the quantitative analysis using the extended 2010 input-output table, we calculated that the production inducement impact will reach up to 13.5 trillion won. 11.07 trillion won from the offshore wind farm industry and 2.4 trillion won from others. Furthermore the impact of increase in employment is expected to reach 22,662. 9,883 will be from the wind farm industry and 12,779 from other fields. The impact is expected to be greater especially during the middle of the jobless growth period, Lastly, the value added inducement impact is expected to be 4.24 trillion won. Regarding economic impacts, strategies required for increasing local acceptance are as follows. First, in order to diversify and sophisticate the primary industry into a secondary or tertiary one, we need to develop the nearby wind farm site into a wind farm thema park. Attracting the wind farm production, installing and maintaining/repairing firms and establishing an experience center for K-12 students by providing them an education center for offshore wind energy can be specific means of development. Also, during the operation and after the destruction of facilities, the government should lay out the sub-structure of the wind farm as a sea ranch. Thirdly, the level of local acceptance regarding the community ownership of the offshore wind farm should increase to those of Middelgrunden(Denmark) and Navarra(Spain). Considering the economic condition of Buan, Gochang and the Yeonggwang area, community ownership is one of best solutions for the increment of local tax revenue. At last, considering the supports system of areas adjacent to power plants and ``Partnership management with local community’, the offshore wind farm operator may need to provide assistant policies to nearby communities. The policies should be based on Corporate Social Responsibility(CSR) such as education scholarship projects, local economy cooperative projects, sports/culture projects.
Sang O Park,Young Bum Yoo,Yong Hun Kim,Kwang Je Baek,Jung-Hyun Yang,Pil Cho Choi,Jeong Hun Lee,Kyeong Ryong Lee,Kyoung Sik Park 대한외과학회 2015 Annals of Surgical Treatment and Research(ASRT) Vol.88 No.2
Purpose: The anticancer property and cytoprotective role of selenium in chemotherapy have been reported. However, the combination effects of selenium on chemotherapy for advanced breast cancer have not yet been clearly defined. The purpose of this study was to investigate the combined effects of selenium on chemotherapy using docetaxel on breast cancer cell lines. Methods: Under adherent culture conditions, two breast cancer cell lines, MDA-MB-231 and MCF-7, were treated with docetaxel at 500pM and selenium at 100nM, 1μM, or 10μM. Changes in cell growth, cell cycle duration, and degree of apoptosis after 72 hours in each treated group were evaluated. Results: In the MDA-MB-231 cells, the combination therapy group (docetaxel at 500pM plus selenium at 10mM) showed a significantly decreased percentage of cell growth (15% vs. 28%; P = 0.004), a significantly increased percentage of late apoptosis (63% vs. 26%; P = 0.001), and an increased cell cycle arrest in the G2/M phase (P = 0.001) compared with the solitary docetaxel therapy group. Isobologram analysis demonstrated the synergistic effect of the combination therapy in the MDA-MB-231 cells. However, in the MCF-7 cells, no significant differences in the percentage of cell growth apoptosis, the percentage of apoptosis, and the pattern of cell cycle arrest were noted between the combination therapy groups and the solitary docetaxel therapy group. Conclusion: Our in vitro study indicated that the combination of selenium with docetaxel inhibits cell proliferation through apoptosis and cell arrest in the G2/M phase in MDA-MB-231 breast cancer cells.
ESHAP Salvage Therapy for Refractory and Relapsed Non-Hodgkin`s Lymphoma: A Single Center Experience
( Sang Hyoung Park ),( Shin Kim ),( Ok Bae Ko ),( Ja Eun Koo ),( Dan Bi Lee ),( Yong Pil Jeong ),( Joo Ryung Huh ),( Sung Bae Kim ),( Sang We Kim ),( Jae Lyun Lee ),( Cheol Won Suh ) 대한내과학회 2006 The Korean Journal of Internal Medicine Vol.21 No.3
Background: The ESHAP chemotherapy regimen, that is, the combination of the etoposide, methylprednisolone, high-dose cytarabine and cisplatin, has been shown to be active against relapsing or refractory non-Hodgkin`s lymphoma (NHL) in previous therapeutic trials. We attempted to determine whether ESHAP therapy would be effective and well-tolerated in Korean patients. Methods: Twenty two patients with refractory or relapsed NHLs (all aggressive types) were enrolled in this study. We retrospectively evaluated the treatment response, the survival rate and the time to progression. Results: Six patients (27.3%) attained complete remission and eight patients (36.4%) attained partial remission. The overall response rate was 63.6%. The median survival duration was 15.5 months (95% confidence interval; 10.7 to 20.3 months), and the median duration of the time to progression was 8.3 months (95% confidence interval; 0.3 to 16.3 months). Myelosuppression was the major toxicity, but severe neutropenia or thrombocytopenia was rare, and renal toxicity was also infrequent. Conclusions: ESHAP regimen is effective in Korean patients suffering with relapsed or refractory NHLs, but a more effective salvage modality is needed because of the short duration of remission and the insignificant impact on long-term survival.