Voltage Clamp Bias를 사용한 고전압 LED Drive IC

박성남,박시홍,Kim, Seong-Nam,Park, Shi-Hong 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.7

Due to the enormous progress achieved in light emitting diodes (LEDs) LEDs have been become a good solution for lightings. In LED driver for lighting applications, it is required high input voltage to drive more LEDs. Therefore, high-voltage should be changed to low-voltage to supply power for drive IC. In this paper, LED drive IC using voltage clamp bias circuit, it use a hysteretic-buck converter topology was proposed and verified through experiments.

스웨덴의 방산수출정책과 시장전략

박성남,Park, Seong-Nam 한국방위산업진흥회 1990 國防과 技術 Vol.- No.141

무역수지 측면에서 스웨덴의 무기수출량은 연간 약 7천2백억원 정도이며, 이것은 전체 민간수출량과 비교할 때 큰 부분이 아니다. 고용에 관한 논쟁도 스웨덴에서는 결정적인 문제가 아니다. 약3만명이 직접적으로 방위산업에 참여하고 있으나, 이는 제조업 근로자의 10%, 전체근로자의 1%에 불과하다. 스웨덴은 다른나라의 군사적인 분쟁에 연루되는 것을 원치 않으며, 특히 2개의 초강대국이 포함된 분쟁에 연루되기를 원치 않는다. 통계적으로 볼 때 지난 20여년 동안 스웨덴 정부는 매년 현존하는 전체 독립국의 약 4분의 1에 해당하는 35-40개국에 무기판매를 허용하였다

SWOT 분석을 통한 습지보호지역 시민모니터링 개선 방안 - 순천만과 보성벌교 갯벌을 중심으로 -

박성남 ( Park Seong-nam ),차성식 ( Cha Seong-sig ),오강호 ( Oh Kang-ho ),윤석태 ( Youn Seok-tai ),고영구 ( Koh Yeong-koo ) 한국도서(섬)학회 2016 韓國島嶼硏究 Vol.28 No.3

In order to suggest the improved methods and standard manual for the citizen monitoring in wet land protection area, citizen monitoring data in the Suncheon Bay and Boseong-Beolgyo tidal flats during 2013 to 2015 were compared with the monitoring results by the experts, in terms of their strength, weakness, opportunity, and threat (SWOT). As for the systematic establishment and effective management of citizen monitoring program, the standardized monitoring manual and improved administrative policies are suggested. The Monitoring methods suggested are as follows: ⅰ) monitoring must be conducted seasonally, and additional survey should be done if necessary; ⅱ) appropriate monitoring variables suitable for the local wetland environment must be selected; ⅲ) the monitoring manual should be specified for the local wetland; and ⅳ) citizen monitoring members should be trained by the mento-menti style and participation from various groups of citizens is needed. The administrative policies should include the followings: ⅰ) early execution of program funds that can initiate programs every year and seasonal monitoring events; ⅱ) long term contracts that can maintain the consistency of the monitoring program; ⅲ) intensification of partnerships and construction of networks among citizen, civil organizations, administrations of the government, local governments, universities, and institutes; ⅳ) educational programs to train citizen monitoring members; and ⅴ) building and sharing the database of citizen monitoring program among other wetlands. The purpose of citizen monitoring program for the wetland protection area can be achieved when the program is carried out by self-initiated citizens.

SILS 포트를 이용한 단일공법 복강경하 질식자궁절제술과 삼공법 복강경하 질식자궁절제술의 비교

박성남 ( Seong Nam Park ),홍기연 ( Gi Youn Hong ),김훈영 ( Hoon Young Kim ),김병륜 ( Byoung Ryun Kim ),이철 ( Cheol Lee ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.1

Objective The purpose of this study was to compare surgical outcomes and patients` satisfaction between single-port access laparoscopically assisted vaginal hysterectomy (SPA-LAVH) and conventional three-port access LAVH (TPA-LAVH) group. Methods A prospective analysis was performed in patients who underwent laparoscopically assisted vaginal hysterectomy at a Wonkwang University Hospital between April 2010 and May 2011, a total of 138 women were enrolled in this study. One of these procedures was chosen by patient and was performed with their consent. Sixty-fi ve women underwent SPA-LAVH using transumbilical SILS port access (SPA-LAVH group), and 73 women underwent conventional three-port LAVH (TPA-LAVH group). Results There were no statistical differences between groups in the patients` demographic characteristics, mean operating time (93.4±20.2 minutes vs. 95.1±28.7 minutes, P=0.696), postoperative changes in hemoglobin concentration (1.91±0.68 vs. 1.85±0.87 g/dL, P=0.667), weight of the resected uterus (261.7±205.3 g vs. 311.8±268.3 g, P=0.225), hospital stay (5.9±0.9 day vs. 6.4±1.6 day, P=0.063), the rate of using an additional trocar (1.5% vs. 0%, P=0.471), the rate of conversion to laparotomy (0% vs. 4.1%, P=0.098) and postoperative pain scores (visual analogue scale) for 48 hours. However, patients` satisfaction after 6 weeks later was signifi cantly greater in SPA-LAVH group than in conventional group, as evidenced by higher rate of fairly satisfactory (52.3% vs. 34.2%, P=0.032) and very satisfactory (33.8% vs. 17.8%, P=0.031). Conclusion SPA-LAVH using transumbilical SILS port access is comparable with TPA-LAVH in women undergoing LAVH. However, SPA-LAVH is better than TPA-LAVH in terms of satisfaction of patient.

시민모니터링을 통한 순천만과 보성벌교갯벌의 습지환경

박성남 ( Seong Nam Park ),오강호 ( Kang Ho Oh ),고영구 ( Yeong Koo Koh ),윤석태 ( Seok Tai Youn ),김해경 ( Hai Gyoung Kim ),신상은,양효식 ( Hyo Sik Yang ) 한국도서(섬)학회 2015 韓國島嶼硏究 Vol.27 No.1

This studies a compiled result of the wetland protected areas in Suncheon bay and Boseong-Beolgyo regions monitored by citizens from 2013 to 2014 years. The monitored targets were benthos, halophytes, waterfowls, sedimentary environments and so forth. Benthic index species varied in small scales from 2013 to 2014, but their individuals and burrows decreased. Based on the 6monitored species, waterfowls showed increasing trends and reached up to 3,500 individuals composed of Grus monacha and Tadorna tadorna. The two birds mainly pass winter in the Suncheon bay. Halophytes rapidly decreased in 2014 compared to 2013, and their cover areas were very poor, below 5% and even their vegetation disappeared. Sediments, except for some stations, generally accumulated to 2~5 cm. From the compiled results of 2013 to 2014, the wetlands varied seasonally and annually. Wetlands must be monitored in various terms of 5, 10, 20, and more, in addition to the short period surveys. Therefore, it is necessary to monitor wetlands in the aspect of efficient conservation. In order to accomplish the above, the followings must be achieved. First of all, seasonal surveys must be carried out for the continuous accumulation of citizen monitoring data. Secondly, the development of standard monitoring manual suitable for wetland environments is required. Thirdly, in order to actualize areal festivals and to improve wetland conservation, continuous areal development using tidal flats is necessary. Fourthly, the wetland conservation plans for Suncheon bay and Boseong-Beolgyo regions must be based on the wetland conservation act. Fifthly, a wetland conservation plan 「of the citizen, by the citizen, for the citizen」is required in order to conduct a suitable citizen monitoring. The principality of citizen monitoring is in the local residents themselves. Therefore, citizen monitoring of wetlands by locals themselves is essential.

습지보호지역의 염생식물 시민 모니터링 개선방안 -순천만과 보성벌교 갯벌을 중심으로-

박성남 ( Seong Nam Park ),차성식 ( Seong Sig Cha ),양효식 ( Hyo Sik Yang ) 한국도서(섬)학회 2016 韓國島嶼硏究 Vol.28 No.1

This study involves a mutual comparative result through monitoring average citizens and expert groups on halpohytes in the Suchenon Bay and Boseong-Beolgyo tidal flats. Citizen monitoring has several advantages, such as observation accessability regarding vegetation changes. It also provides a useful quantitative measurement for individuals, coverage and growth rates since the monitored targets share the same vegetation and station in a fixed quadrat. Still, in order to figure out the entire halophyte flora and vegetation community citizen monitoring isn’t enough. Also, some artificial and unskilled works might intervene with the monitored results. Meanwhile, experts can see the overall aspects of vegetation and flora based on plant community and frequency in the monitored area. However, at the same time expert monitoring encounters difficulties in continuous observation. Professional surveys in citizen monitoring are not best fit for our goal and unsuitable field items must be reduced. Still, it does provide an insight that citizen monitored items on halophytes are individual number, coverage, and growth rate in a given fixed quadrat.

난소의 단일 원발성 편평상피세포암

오성환 ( Seong Hwan O ),정상훈 ( Sang Hun Jung ),박성남 ( Seong Nam Park ),나수미 ( Su Mi Na ),김흥곤 ( Heung Gon Kim ),문형배 ( Hyung Bae Moon ) 대한산부인과학회 2005 Obstetrics & Gynecology Science Vol.48 No.12

Bartholin선의 편평상피세포암

이제중 ( Je Jung Lee ),박성남 ( Seong Nam Park ),정상훈 ( Sang Hun Jeong ),나수미 ( Su Mi Na ),김흥곤 ( Heung Gon Kim ),문형배 ( Hyung Bea Moon ) 대한산부인과학회 2005 Obstetrics & Gynecology Science Vol.48 No.10

천속단(Phlomis umbrosa Turcz)의 파골세포 분화에 미치는 영향

백종민(Jong Min Baek),박주하(Ju Ha Park),송정훈(Jeong Hoon Song),박성남(Seong-Nam Park),정우진(Woo Jin Jeong),문서영(Seo Young Moon),이창훈(Chang Hoon Lee),최민규(Min-Kyu Choi),김정중(Jeong Joong Kim),오재민(Jaemin Oh),장성조(Sung Jo 대한체질인류학회 2013 해부·생물인류학 (Anat Biol Anthropol) Vol.26 No.3

골다공증, 류마티스 관절염을 비롯한 많은 골질환은 파골세포의 지나친 골 흡수 활동으로 인하여 발생한다. 최근 들어, 천연물에서 추출한 성분을 이용하여 새로운 치료물질을 개발하기 위한 연구가 활발하게 진행되고 있다. 그 중, 천속단이라고 알려진 천연물질은 뼈를 튼튼하게 해주는 효능이 있는 것으로 알려져 있으나, 천속단의 골질환과 관련된 정확한 효과나 치료기전에 대한 정보는 아직 알려진 바가 없다. 따라서 본 연구에서는 골수탐식세포에서 receptor activator of nuclear factor-κB ligand (RANKL)로 유도한 파골세포의 분화와 골 흡수능에 천속단이 어떠한 영향을 미치는지 알아보았다. 또한, 파골세포의 분화와 관련된 작용기전을 규명하였다. 본 실험에서 천속단은 RANKL로 유도한 파골세포의 분화와 골 흡수능을 현저히 억제하였고, RANKL과 macrophage-colony stimulating factor (M-CSF)를 처리한 골수탐식세포에서 NF-κB의 발현을 저해하였다. 더 나아가, c-Fos를 비롯한 nuclear factor of activated T-cells (NFAT)c1, osteoclast-associated receptor (OSCAR), tartrate-resistant acid phosphatase (TRAP)의 mRNA 발현이 천속단에 의해 억제됨을 확인하였으며, 세포융합과 관련 있는 유전자인 Integrin αν, β3와 actin ring에 관여하는 유전자인 dendritic cell-specific transmembrane preotein (DC-STAMP)그리고 골 흡수능과 연관된 Cathepsin K 또한 같은 결과를 나타내었다. 이러한 결과는 천속단의 골다공증을 비롯한 골질환 치료의 후보물질로써의 가능성을 제시하였다. Many bone-related diseases such as osteoporosis, rheumatoid arthritis are occurred by excessive bone resorbing activity of osteoclasts. Recently, many studies have been proceeded to find out the new therapeutic materials from natural products of plants. Phlomis umbrosa Turcz, one of the natural products of plants has been known to improve bone health. However, the precise effects and treatment mechanisms of Phlomis umbrosa Turcz about bone diseases has been unknown. So, we examined the effects of Phlomis umbrosa Turcz on expression of receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclast differentiation in bone marrow-derived macrophages (BMMs) and bone resorption. Also, we investigated the treatment mechanisms of Phlomis umbrosa Turcz relating to osteoclast differentiation. Here, we showed that Phlomis umbrosa Turcz significantly suppressed RANKLinduced osteoclast differentiation and bone resportion. Furthermore, Phlomis umbrosa Turcz suppressed the activation of NF-κB in bone marrow macrophage treated RANKL and M-CSF. The mRNA expression of c-Fos, nuclear factor of activated T-cells (NFAT)c1, osteoclast-associated receptor (OSCAR), tartrate-resistant acid phosphatase (TRAP) in BMMs was inhibited by Phlomis umbrosa Turcz. Integrin αν, β3 relating to cell adhesion and dendritic cell-specific transmembrane protein (DC-STAMP) relating to the structure of filamentous actin (F-actin) ring and cathepsin K relating to bone resorbing activity are disrupted too. These results suggest that Phlomis umbrosa Turcz will be a good materials to treat bone diseases like osteoporosis.

서비스 경험이 관계지향성에 미치는 영향에 관한 연구 : 가맹점주의 인게이지먼트 조절효과를 중심으로

장우철(Woo-Choul Chang),전성준(Chengjun Quan),박성남(Seong-Nam Park),강기두(Gi-Du Kang) 대한경영학회 2021 大韓經營學會誌 Vol.34 No.12

현재 대한민국의 프랜차이즈 산업은 선진화되고 체계적인 경영시스템 부족으로 인하여 질적인 발전이 정체되어 있다. 또한 국내에서는 프랜차이즈의 급속한 성장에 따라 사회적 발전과 함께 폐해도 다수 발생하고 있다. 하지만 외형적인 성장에 따른 프랜차이즈 산업에서 그에 따른 생산적이고 창의적인 다양한 시각에서의 프랜차이즈 학술연구가 활발하지 않는 것 또한 엄연한 현실이다. 본 연구는 그동안 논의되지 않았던 가맹점주의 서비스 경험에 따른 장기 관계지향성(재계약의도와 재무적 성과, 평당 매출액<실제 매출데이터>), 가맹점주의 인게이지먼트, 관계품질의 다양한 변수들이 상호 간의 미치는 영향을 확인하고자 하였다. 본 연구는 2가지 업종(커피, 치킨)을 대상으로 프랜차이즈 업종에 종사하는 264명의 가맹점주를 대상으로 서비스 경험이 장기 관계지향성에 미치는 영향에 대해서 검증하였다. 연구결과, 서비스 경험은 재계약의도와 재무적 성과에는 유의한 정(+)의 영향을 미치는 것으로 나타났으나 평당 매출액에는 유의한 영향을 미치지 않는 것으로 나타났다. 관계품질의 매개효과 분석결과, 관계품질은 서비스 경험과 재계약의도, 서비스 경험과 재무적 성과 사이에서만 매개효과가 있음을 확인하였다. 마지막으로 인게이지먼트의 조절효과 분석한 결과, 서비스경험이 재계약의도와 서비스 경험이 재무적 성과에 미치는 영향에 대해 조절효과가 있는 것으로 확인되었다. 기존 가맹본부와 가맹점의 관계를 논의한 다수의 연구들은 가맹본부의 입장에서 가맹점에 대한 가맹본부의 지원서비스에 대한 논문이 대다수를 차지하였다. 본 연구는 가맹본부와 가맹점주를 대등한 입장에서 설정하고 연구를 진행하였다는 점에서 차별점을 지니고 있으며 이에 따라 학술적이고 이론적인 시사점을 갖고 있다. The quality of the franchise industry in Korea is stagnant due to the lack of an advanced and systematic management system. However, in Korea, along with the rapid growth of franchises, a number of negative effects are occurring along with social development. However, it is also the reality that academic research on franchises from various productive and creative perspectives is not active in the franchise industry according to the external growth. This study tried to verify the effect of mutual variables of long-term relationship intention(Intention to renew the contract and financial performance, actual sales data) according to franchisees service experience, which were not previously discussed, and the variables of franchisees engagement and relationship quality. This study investigated the effect of service experience on long-term relationship intention for 264 franchisees in two kind of industries(coffee-shop and chicken). As a result of the study, it was found that service experience had a positive, significant effect on contract renewal intention and financial performance, but had no significant effect on sales per area. On the other hand, as a result of examining the mediating effect of relationship quality, it was confirmed that relationship quality had a mediating effect between service experience and contract renewal intention, service experience and financial performance. Also, as the result of confirming the moderating effect of engagement, it was verified that service experience had a moderating effect on the contract renewal intention and the effect of service experience on financial performance. This study is different in that the franchise headquarters and franchise owners were set and conducted on the same level and accordingly, it has academic and theoretical implications.