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RISS 인기검색어
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- 저자 : 신동열 ( Dongyeol Shin ) (검색결과 4 건)
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분산전원 연계선로에서 지락고장시 중성선의 과전류 해석 및 보호계전기의 새로운 알고리즘
신동열(Dongyeol Shin),김동명(Dongmyung Kim),차한주(HanJu Cha) 대한전기학회 2009 전기학회논문지 Vol.58 No.10
Introducing distributed generators(DGs) to utility distribution system can cause malfunction of relay on the grid when ground faults or severe load unbalances are occurred on the system. Because DGs interconnected to the grid can contribute fault currents and make bidirectional power flows on the system, fault currents from DGs can cause an interference of relay operation. A directional over current relay(DOCR) can determine the direction of power flow whether a fault occurs at the source side or load side through detecting the phases of voltage and current simultaneously. However, it is identified in this paper that the contributed fault current(Ifdg) from the ground source when was occurred to contribute single-line-to-ground(SLG) fault current, has various phases according to the distances from the ground source. It means that the directionality of Ifdg may not be determined by simply detecting the phases of voltage and current in some fault conditions. The magnitude of Ifdg can be estimated approximately as high as 3 times of a phase current and its maximum is up to 2,000 A depending on the capacity of generation facilities. In order to prevent malfunction of relay and damage of DG facilities from the contribution of ground fault currents, Ifdg should be limited within a proper range. Installation of neutral ground reactor (NGR) at a primary neutral of interconnection transformer was suggested in the paper. Capacity of the proposed NGR can be adjusted easily by controlling taps of the NGR. An algorithm for unidirectional relay was also proposed to prevent the malfunction of relay due to the fault current, Ifdg. By the algorithm, it is possible to determine the directionality of fault from measuring only the magnitude of fault current. It also implies that the directionality of fault can be detected by unidirectional relay without replacement of relay with the bidirectional relay.
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폐 장외 증상을 동반한 크론병의 성공적인 아달리무맙 치료 증례
신동열 ( Dongyeol Shin ),박병규 ( Byung Kyu Park ),서정훈 ( Jeonghun Seo ),원선영 ( Sun Young Won ),이미경 ( Mi Kyoung Lee ),홍용국 ( Yong Kook Hong ),조용석 ( Yong Suk Cho ) 대한소화기학회 2018 대한소화기학회지 Vol.72 No.3
Pulmonary extraintestinal manifestation is rare in Crohn’s disease and has been reported in only a few cases. Despite the presence of pulmonary abnormalities in a significant proportion of patients with inflammatory bowel disease, there are only few case reports, due to complicated diagnosis and low recognition by clinicians. Currently, treatment guidelines for pulmonary Crohn's disease have not been established. There are some case reports of pulmonary Crohn’s disease that achieved remission after infliximab treatment. Clinical and radiological remission of pulmonary extraintestinal involvement in Crohn's disease after adalimumab therapy has not been reported yet. Here, we report one case of lung involvement of Crohn’s disease, which shows radiological and clinical remission after adalimumab treatment. (Korean J Gastroenterol 2018;72:141-145)
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성폭력 행위자의 심리적 분열과 사회적 고립에 관한 현상학적 연구
박경숙 ( Park Kyeomhsuk ),신동열 ( Shin Dongyeol ) 아시아문화학술원 2017 인문사회 21 Vol.8 No.6
본 연구는 성폭력 행위자가 범행 이후에 겪게 되는 심리적 분열과 사회적 고립에 관한 연구이다. 연구 대상은 00교도소에 성폭력 행위자로 수감되어 있는 3명을 대상으로 하였다. 연구방법은 현상 자체에 대한 연구에 적합한 Colaizzi의 현상학적 연구방법을 적용하여 1단계 반 구조화된 질문지를 통한 심층 면담, 2단계 Colaizzi의 분석절차에 의해 자료를 분석하였다. 이를 통해 첫째, 성폭력 가해자들은 범행 후 자책감에 시달리면서 감정적 호소와 울분을 토하는 등 심리적 분열상을 보였고, 둘째, 가족과 친지로부터 멀어지는 등 사회로부터 철저히 고립되다보니 잃은 게 너무 많다는 인식을 갖고 있다는 점을 도출하였다. 이는 성폭력 가해자들의 심리상태에서 나타나는 경험의 본질을 총체적으로 파악해 보았다는 점에서 본 연구에 의의를 갖는다. The purpose of this study is to understand the mental breakdown and the social isolation experienced by sex offenders after the crime. The subjects of the study were the 3 inmates incarcerated for sexual crimes at the ○○ prison. For this study, Colaizzi's phenomenological method was applied and the data was analyzed first through the in-depth consultation after the structured questionnaires and secondly through Colaizzi's analysis procedure. The result showed that the offenders were experiencing mental breakdowns from guilt and it also showed that the offenders felt that they had lost many things from being completely isolated from the society. The significance of the study was in understanding the mental state of the sex offenders.
ScienceON
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