전력품질을 고려한 수용가 모선 가격 계산

정성원,박인덕,김재현,이근준,Jeong, Sung-Won,Park, In-Duck,Gim, Jae-Hyeon,Lee, Geun-Joon 한국조명전기설비학회 2007 조명·전기설비학회논문지 Vol.21 No.3

본 논문은 수용가에 대한 전력요금이 각 모선별로 부과될 경우 모선들의 전력품질을 측정하여 이를 비용화할 수 있다고 가정하였다. 이를 계통계획에 반영하여 예상되는 비용은 샘플계통을 통하여 다음과 같은 계산 방법을 제안하였다. 먼저 모선가격을 계산하기 위해서는 계통에서 전력설비의 운전조건은 최적조류계산에 의해 최적화되어 있는 상황으로 가정하여 모선가격[$/MVAH]을 산정하고, 계통의 각 모선에 연결된 부하들의 연중 발생하는 고장에 의해 탈락되는 피해비용을 산출하였다. 결과적으로 제안된 방법은 전력품질을 포함한 모선 총합 비용을 계산시 매우 효과적이였다. This paper measures power quality of bus in case electric charges about customer are imposed by each bus, supposed that can calculate this cost. When reflected this in system planning, expected cost proposed following method through sample system. To calculate nodal cost operating condition of power equipment calculates nodal cost[$/MVAH] supposing by situation that is optimized by OPF(optimal power flow) in system. The damage cost that is shed by fault that happen during year of loads in system that is linked on each bus was produced. As a result, proposed method was very effective in case of calculating bus total cost including power quality cost.

한국적 특수성을 고려한 지역특성과 개인의 건강

정성원,조영태,Jung, Sung-Won,Cho, Young-Tae 대한예방의학회 2005 예방의학회지 Vol.38 No.3

Recently much attention has been paid to the effect of neighborhood characteristics on the health of individuals, independent of individual demographic and/or socioeconomic characteristics. Although many empirical studies of a kind, mostly based on Western society, have appeared on various international journals, few studies have shown empirical evidence of neighborhood characteristics as an independent and significant risk factor of ill health in Korea. This paper discusses possible reasons that neighborhood seems to be neither significant nor substantial regarding its impact on the health of Koreans. Addressing the uniqueness of Korean society regarding the concept of neighborhood, attributes of neighborhoods, and methodological challenges, authors suggest that more sophisticated conceptual and methodological approach, specific to Korean society, should enable to reveal the effect of neighborhood characteristics on individual health in Korea.

백서두개골 결손부에서 BMP전달체의 골재생효과분석

정성원,정지희,채경준,정의원,김창성,조규성,채중규,김종관,최성호,Jung, Sung-Won,Jung, Jee-Hee,Chae, Gyung-Joon,Jung, Ui-Won,Kim, Chang-Sung,Cho, Kyoo-Sung,Chai, Jung-Kiu,Kim, Chong-Kwan,Choi, Seong-Ho 대한치주과학회 2007 Journal of Periodontal & Implant Science Vol.37 No.4

Bone morphogenetic proteins have been shown to possess significant osteoinSductive potential, but in order to take advantage of this effect for tissue engineering, carrier systems are essential. Successful carrier systems must enable vascular and cellular invasion, allowing BMP to act as a differentiation factor. The carrier should be reproducible, non-immunogenic, moldable, and space-providing, to define the contours of the resulting bone. The purpose of this study was to review available literature, in comparing various carriers of BMP on rat calvarial defect model. The following conclusions were deduced. 1. Bone regeneration of ACS/BMP, ${\beta}-TCP/BMP$, FFSS/BMP, $FFSS/{\beta}-TCP/BMP$, MBCP/BMP group were significantly greater than the control groups. 2. Bone density in the ACS/BMP group was greater than that in ${\beta}-TCP$, FFSS, $FFSS/{\beta}-TCP$ carrier group. 3. Bone regeneration in FFSS/BMP group was less than in ACS/BMP, ${\beta}-TCP/BMP$, MBCP/BMP group. However, New bone area of $FFSS/{\beta}-TCP/BMP$ carrier group were more greater than that of FFSS/BMP group. ACS, ${\beta}-TCP$, FFSS, $FFSS/{\beta}-TCP$, MBCP were used for carrier of BMP. However, an ideal carrier which was reproducible, non-immunogenic, moldable, and space-providing did not exist. Therefore, further investigation are required in developing a new carrier system.

Protein transduction domain을 이용한 recombinant human bone morphogenetic protein-2의 골재생효과

정성원,김남희,육종인,김창성,김형준,조규성,Jung, Sung-Won,Kim, Nam-Hee,Yook, Jong-In,Kim, Chang-Sung,Kim, Hyung-Jun,Cho, Kyoo-Sung 대한치주과학회 2007 Journal of Periodontal & Implant Science Vol.37 No.3

Bone morphogenetic proteins(BMPs) are regarded as members of the transforming growth $factor-{\beta}$ superfamily with characteristic features in their amino acid sequences. A number of studies have demonstrated the biologic activities of BMPs, which include the induction of cartilage and bone formation. Recently there was a attempt to overcome a limitation of mass production, and economical efficieny of rh-BMPs. The method producing PTD by using bacteria have advantages of acquiry a mass of proteins. Hences, a new treatment which deliver protein employed by protein transduction domain(PTD) has been tried. The purpose of this study was to evaluate the bone regenerative effect of TATBMP-2 and TAT-HA2-BMP-2 employed by PTD from HlV-1 TAT protein for protein translocation in the rat calvarial model. An 8mm calvarial, critical size osteotomy defect was created in each of 32 male Spraque-Dawley rats(weight $250{\sim}300g$). The animals were divided into 4 groups of 32 animals each (4 animals/group/healing interval). The defect was treated with TATBMP-2/ACS(Absorbable collagen sponge) (TATBMP-2 0.1mg/ml), TAT-HA2-BMP-2/ACS(TAT-HA2-BMP-2 0.1mg/ml), ACS alone or left untreated for surgical control(negative control). The rats were sacrificed at 2 or 8 weeks postsurgery, and the results were evaluated histologically. The results were as follows: New bone formation were not significantly greater in the TATBMP-2/ACS group relative to negative, and positive control groups. New bone was evident at the defect sites in TAT-HA2-BMP-2/ACS group relative to negative, positive control and TATBMP-2 groups. There were a little bone regeneration in TATBMP-2 groups. While, enhanced local bone formation were observed in TAT-HA2-BMP-2 group. But, The results was not the same in all rat defects. Therefore, further investigations are required to develop a method. which disperse homogenously, and adhere to target cells.

전기응석 부상분리에 의한 바이오매스의 처리에 관한 연구

정성원(Sung-Won Chung),정용택(Yong-Teak Jung) 한국산업융합학회 2005 한국산업응용학회 학술대회 논문집 Vol.- No.-

본 연구에서는 전기응석 분리법을 이용하여 호수에서 녹조현상으로 인해 오염된 물의 정화를 위한 실험결과,통전에 의해 조류는 현저히 응석 부상분리되고, 그 결과 회수수의 정수효과가 확실히 나타났다. 이것은 조류의 농도가 높을수록 상승하였다.<br/> 전기응석법에 의해 부상분리되어 얻어진 회수수의 SS, Chl-a, Org-N은 감소하고, DO, pH는 저하 하였다.<br/> 통전에 의해 회수수의 투과율이 증대하는 하편, 임의 한도를 넘으면 SS가 증대하는 현상이 관찰 되었다. 때로는 투명하게된 회수수의 SS가 원수의 SS보다 높은 경우도 있었다. 이것을 조류 농도가 낮고, 장시간 통전 했을때에 현저 하였다. 이들은 통전에 따른 Al(OH)₃의 생성에 기인하는 것이다.<br/> 통전에 의한 조류의 응석부상분리의 효과와 청정효과, 회수수의 Al(OH)₃의 용출에 관한 실용적인 조작조건을 정하는 것이 절실히 요망된다.<br/> 특히 본 실험은 조류의 농도가 클때 유효한 방법이므로 일사량이 많은 하기에 태양전지를 전원으로 이용한 제작에 의해 실용화 시기 할 수 있을 것으로 사료 된다.

2002년 전반기 설마천 시험유역의 운영

정성원(Jung Sung Won),문장원(Moon Jang Won),김동필(Kim Dong Pil),김동희(Kim Dong Hee),한명선(Han Myoung Sun) 대한토목학회 2002 대한토목학회 학술대회 Vol.2002 No.11

웹상의 표에서 머리와 몸체 분리 방안 연구

정성원(Sung-Won Jung),권혁철(Hyuk-Chul Kwon) 한국정보과학회 언어공학연구회 2005 한국정보과학회 언어공학연구회 학술발표 논문집 Vol.2005 No.10

본 논문은, 웹상의 표에서 유용한 정보를 뽑기 위하여 표 머릿부분과 몸체부분을 효과적으로 분리하는 방안을 제안한다. 웹상의 표로부터 정보를 뽑기 위해서는 웹상의 표를 기계가 해석할 수 있는 형태, 즉 속성-값의 쌍으로 변환해야 한다. 이중 속성은 보통 표 머리에 해당하며, 그에 해당하는 값은 표 몸체에 해당하는데, 이는 머리가 해당 몸체 부분을 대표하여 나타내는 단어이기 때문이다. 본 연구의 선행 연구에서는 인터넷상의 표가 표 본래의 정보 전달을 위한 목적 이외에 인터넷 문서의 정렬이나 구조화를 목적으로 쓰이는 경우가 많으므로 이러한 표를 제거하고 표 본래의 의미를 전달하는 표(의미 있는 표)만 추출하는 연구를 하였다. 본 연구에서는 이를 바탕으로 의미 있는 표에서 표 머리와 몸체를 분리하기 위한 휴리스틱에 기반을 둔 모델을 제안한다. 이를 위하여, 표의 본래 특성과, 표를 작성하는 저자의 작성 습관을 관찰하여 머리와 몸체를 분리하기 위한 방안을 설정하고, 이 방안들을 결합하는 모델을 구축한다. 본 연구에서는 이 결과로 80.3%의 표 머리 추출 정확도를 얻을 수 있었다.

수치해석을 이용한 다겹보온자재의 내부공기층 함유에 따른 보온 특성

정성원(Sung-Won Chung) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.4

This study investigates thermal insulation properties of multi layer materials depending on thickness of air layers. Numerical analysis on the heat flow of different insulating materials was conducted to identify whether their temperature distributions demonstrate the reduced rate of heat transfer conclusively or not. Analytical model is divided into two categories. One is to distinguish temperature distribution of the air-layer materials from the non-air layer ones. The other is to compare the efficacy between eight-layered insulating materials with no air-layer contained and three-layered insulating materials which include an air-layer definitely. In the latter case, the identical thickness is assigned to each material. The effect of thermal insulation by including an air-layer is verified in the first analytical model. The result of the second model shows that the insulation of the eight-layered materials is coterminous at the three-layered ones with an air-layer and the thermal insulation of the two materials is imperceptible. The benefits of cost and energy saving are anticipated if air-layers are efficiently incorporated in multi layer insulating materials in a greenhouse.

배관 검사를 위한 자기누설(MFL, Magnetic Flux Leakage) 장비 탑재 관외면 이동 로봇 개발

정성원(Jung, Sung Won),박경완(Park, Kyeong wan) 대한토목학회 2019 대한토목학회 학술대회 Vol.2019 No.10

평균 배기 압력 구배 지수를 이용한 실화 검출

정성원(Sung-Won Chung),심국상(Kook-Sang Sim),김세웅(Se-Woong Kim) 한국산업융합학회 2001 한국산업융합학회 논문집 Vol.4 No.4

This paper proposes a method to detect the misfired cylinder using a new misfire detection index. The new method of misfired cylinder is a comparison of pressure gradient during the blowdown period of exhaust stroke. If a misfire occurs, the engine will he lost some power and consumes the more fuel and the torque will be unsteady. Most of all, the misfire affects a bad influence of the 3-way catalyst and emits unburned hydrocarbon in the air. To prevent these unusual phenomena and eliminate the factor of the environmental pollution, it is important to detect the misfired cylinder. To do the experiment, set up the assist device on the manifold. This assist device is not deformed for conventional exhaust manifold and installed in the em of the exhaust manifold. Experimental results showed that the method using the mean gradient pressure index is proven to be effective in the detection of misfired cylinder on gasoline engine regardless loads and revolutions of the engine.<br/> <br/>