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리니어 홀-이펙트 센서를 이용한 교류 서보 모터의 위치제어
박희성(Hee-Sung Park),장성수(Sung-Soo Jang),오성업(Sung-Up Oh),성세진(Se-Jin Seong) 한국조명·전기설비학회 2003 한국조명·전기설비학회 학술대회논문집 Vol.2003 No.-
This paper deals with the position control of an AC servo motor using linear hall-effect sensors. The price of these is very low, but it is possible to make a position control of motor similar to a control using an encoder. This paper introduces the design of motor using linear hall-effect sensor and shows the results of control.
해체정보의 공학적 기술과 요구공학 기술을 연계한 해체 의사결정지원 모델 개념설계
박희성(Hee-Seoung Park),박승국(Seung-Kook Park),진형곤(Hyung-Gon Jin),최종원(Jong-Won Choi) 한국정보기술학회 2015 한국정보기술학회논문지 Vol.13 No.11
The government make a mandatory to submit a decommissioning plan to the regulatory body as decide to decommissioning of the GORI 1 NPP. The decommissioning plan requires various kinds of expert knowledge. But it has not been developed yet. This paper proposes a new type of a decommissioning decision-making support model that can evaluate the main factors based on quantitative and qualitative data for decommissioning a full life-cycle reactor. The proposed model is a technology that can trace the change in dismantling costs and a change history of dismantling methods following a decommissioning regulatory changes as a model combined a decommissioning engineering system and requirement engineering. The model will be showed an advanced knowledge base as linked with laws and an important factors for decommissioning of a NPP.
박희성,정건희 한국수자원학회 2019 한국수자원학회논문집 Vol.52 No.9
In Korea, snow damage has been happened in the region with no snowfalls in history. Also, casual damage was caused by heavy snow. Therefore, policy about the Natural Disaster Reduction Comprehensive Plan has been changed to include the mitigation measures of snow damage. However, since heavy snow damage was not frequent, studies on snowfall have not been conducted in different points. The characteristics of snow data commonly are not same to the rainfall data. For example, some parts of the southern coastal areas are snowless during the year, so there is often no values or zero values among the annual maximum daily snow accumulation. The characteristics of this type of data is similar to the censored data. Indeed, Busan observation sites have more than 36% of no data or zero data. Despite of the different characteristics, the frequency analysis for snow data has been implemented according to the procedures for rainfall data. The frequency analysis could be implemented in both way to include the zero data or exclude the zero data. The fitness of both results would not be high enough to represent the real data shape. Therefore, in this study, a methodology for selecting a probability density function was suggested considering the characteristics of snow data in Korea. A method to select probability density function using conditional joint probability distribution was proposed. As a result, fitness from the proposed method was higher than the conventional methods. This shows that the conventional methods (includes 0 or excludes 0) overestimated snow depth. The results of this study can affect the design standards of buildings and also contribute to the establishment of measures to reduce snow damage. 우리나라에서도 최근 들어 과거 눈이 내리지 않던 지역에 폭설이 내리거나 대설에 의한 인명피해가 발생하는 등의 설해가 발생하였다. 이에 자연재해저감 종합계획에 대설에 의한 설해 대비를 포함하는 등의 정책적인 변화가 생겼으나, 우리나라는 그동안 대설 피해가 많지 않았었기 때문에 대설이나 적설 자료의 특성에 대한 연구를 다양한 각도에서 수행한 적이 거의 없다. 우리나라의 적설자료는 강우자료와 특성이 다른 경우가 많다. 예를 들어, 우리나라 남해안 일부 지역은 연중 눈이 한 번도 내리지 않는 경우가 다수 있어, 연최대치계열 자료 중에 값이 없는 경우가 빈번히 존재하는 등 중도절단 자료(censored data)와 비슷한 특성을 가진다. 실제로 부산 지점은 적설관측시 시작된 이후 연최대치계열 자료의 값이 없는 경우가 전체 시계열의 36% 이상이었다. 그럼에도 불구하고 적설자료의 빈도해석은 기존 강우자료의 빈도해석 절차에 준해 시행되는 경우가 대부분이었다. 연최대치계열 자료가 존재하지 않는 경우, 기존의 빈도해석 방법을 적용하기 위해 자료가 존재하지 않는 기간에 대해 0으로 가정하여 빈도해석을 수행하거나 해당기간을 제외하고 빈도해석을 수행할 수 있다. 그러나 두 가지 경우 모두 구해진 확률분포의 적합도가 매우 낮은 경우가 존재했다. 그러므로 본 연구에서는 우리나라 적설자료의 특성을 고려하기 위해 조건부결합확률분포를 이용하여 확률밀도함수를 선정하는 방법을 제안하였다. 그 결과 기본 방법에 비해 적합도가 더 높은 확률밀도함수를 구할 수 있었으며, 100년 빈도 이상의 고빈도에서 기존 방법에 비해 대체로 적설심이 작아지는 경향을 보였으며, 최대 15%의 차이를 보였다. 눈의 단위중량에 따라 지역별로 하중은 달라질 수 있으며 그 영향의 크기가 달라질 수 있으나, 본 연구의 결과는 건축물의 설계기준에도 영향을 미칠 수 있고, 재해저감을 위한 대책 수립에도 큰 기여를 할 수 있을 것이다.
유전자 분석을 통하여 선발된 한우로부터 초음파 유래 체외수정란 이식에 의한 고품질 한우 생산기술의 실용화 2 : DNA 검정우로부터 초음파 유래 체외수정란의 생산에 관한 연구
박희성,이지삼,진동인,박준규,홍승표,이명열,정장용 韓國受精卵移植學會 2001 한국동물생명공학회지 Vol.16 No.3
본 연구에서는 DNA marker가 검정된 한우로부터 생산한 체외수정란을 이식하여 육질 및 육량의 유전적 능력이 우수한 한우를 대량생산하여 고품질 한우 쇠고기 생산 시스템을 구축하기 위한 전단계로서 DNA marker 검정 한우로부터 초음파유도 난포란을 채란하여 체외수성 및 수정란의 체외 발달에 미치는 각종 요인들과 배반포기 수정란의 부화율 개선을 위하여 투명대를 laser로 drilling을 실시하여 부화율을 조사하였다. 초음파유래 체외수정란의 분할률 This study was designed to examine the factors affecting in fertilization and development of embryos in vitro, and to examine whether zone drilling by laser irradiation can improve the hatching rate of IVF embryos from DNA marker-proved Hanwoo. DNA markers related to marbling score were identified using DNA fingerprinting with Ml3 probe and restriction enzyme Hae III. Oocytes were aspirated from immature ovarian follicles using a combined method of rectal ovarian-palpation and transvaginal ultrasound-guidance(6.5MHz) under local anesthesia. The aspirated oocytes were washed twice with fresh D-PBS containing 5% FBS and were rewashed 4 to 5 times with TCM-199 containing 5% FBS. A morphological grade of I to IV was assigned to each oocyte. Data were analyzed using the GLM procedure of SAS. Sperm separation methods did not have any significant effect on cleavage or developmental abilities of IVF embryos. Significantly(P<0.05) higher cleavage rate was observed in embryos from GI(60.0%, 3/5), GII(69.2%, 18/26) and GIII(62.1%, 59/95) compared to embryos from GIV oocytes(36.2%, 25/69). And the developmental rate to blastocyst stage was higher(P<0.05) in embryos from GI(33.3%, 1/3) and GII oocytes(38.9%, 7/18) than those from GIII(16.9%,10/59) and GIV oocytes(4.0%, 1/25). There was no significant difference in development of IVF embryos to blastocyst by media for in vitro culture. Proportion of hatched blastocyst was significantly(P<0.05) higher in embryos received zona drilling by laser than those of non-drilled.
유전자 분석을 통하여 선발된 한우로부터 초음파 유래 체외수정란 이식에 의한 고품질 한우 생산기술의 실용화 1 : DNA 검정우에서 초음파기기를 이용한 난포란의 채란에 관한 연구
박희성,이지삼,진종인,박준규,홍승표,이명열,정장용 韓國受精卵移植學會 2001 한국동물생명공학회지 Vol.16 No.3
본 연구는 고품질육의 DNA marker가 규떵된 한우로부터 초음파유노 난포란의 연속적 채취를 통하여 능력이 우수한 한우 수정란온 대량생산하는 방법의 확립과 이를 한우농가에 응용하고자 초음파 난자채취기를 이용하여 등지방층두께, 일당증체량, 근내지방도 및배최장근 단면적에 연관된 DNA marker를 보유하고 있는 한우 5두로부터 개체및 난포수, 채취방법, 회수한 난포란의 등급 등을 조사하였다. 한우 5두의 개체별 난포수는 6, 10, 5, 4 및 11회 This study was designed to establish the superior method for IVF embryos from DNA marker-proved Hanwoo cattle. DNA markers related to marbling score were identified using DNA fingerprinting with Ml3 probe and restriction enzyme Hae III. Oocytes were aspirated from unstimulated. immature ovarian follicles using a combined method of rectal ovarian-palpation and transvaginal ultrasound-guidance(6.5MHz) under local abesthesia. The aspirated oocytes were washed twice with fresh D-PBS containing 5% FBS and were rewashed 4 to 5 times with TCM-199 containing 5% FBS. A morphological grade of I to IV was assigned to each oocyte. Data were analysed using the GLM procedure of SAS. Mean number of follicles identified on ultrasound was 5.5 2.9 in right and 4.3 2.8 in left ovaries, respectively. The highest follicles(16.62.6) were found in 5101 cow compared to others. Recovery rate of follicular oocytes in individual cow was highest in 5101 cow with 89.3% in > 2mm and 94.0% in 2mm follicles. Total recovery rate was significantly(P<0.01) higher in 2mm(85.7%, 130/154) than > 2mm follicles(74.2%, 201/271). Significantly more oocytcs of Grade IV were recovered from > 2mm follicles. Mean number follicles recovered was 4.83.7. 3.03.4 and 0.30.6 in 2mm, 2~6mm and 6mm follicles. respectively. Our results imply that the more fertilizablc oocytes can be recovered from invisible-immature follicles by the combination of simultaneous rectal ovarian-palpation and ultrasound-guided approach in Hanwoo cattle.
유방병변에 대한 초음파 유도하 중심침생검 후 발생한 의인성 동정맥루
박희성,배성환,김진유,강태우 한국유방암학회 2018 Journal of Breast Disease Vol.6 No.1
Ultrasonography-guided core needle biopsy has been standard of care for diagnosing suspicious breast lesion. The procedure is safe and has a low rate of complications. Most common complication might be bleeding or hematoma, which could be avoided by careful process or changing it to excisional biopsy or managed by proper management. Rarely, Post-procedural arteriovenous fistula is reported in almost all body fields, which is life quality threatening, not life-threatening. Most of them occur with obvious vessel injury, and their primary end-point of management is the obliteration of fistula by thrombosis. However, we experienced a case of iatrogenic arteriovenous fistula after core needle biopsy for breast lesion with small vessel injury which was not but small ones, and its thrill did not disappear even after thrombosis. We would like to share our clinical learnings from surgical management process of this rare complication.