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주성준,엄동명,송지청,Joo, Sungjun,Eom, Dongmyung,Song, Jichung 대한예방한의학회 2016 대한예방한의학회지 Vol.20 No.3
Objectives : There is a correlation between student's satisfaction of education and their occupation satisfaction. Therefore, Korean medical school students' satisfaction toward their education is important for their medical ability in Traditional Korean Medicine(TKM). The purpose of this study is to investigate TKM school students' satisfaction of education and their perceptions of TKM level. Methods : The questionnaire used in this study is consisted of questions about students' satisfaction and their perception toward issues about TKM. 168 cases were collected, and I analyzed 164 cases. Results : 43.9% of students think that the ratio of western medical courses to TKM courses in TKM school's curriculum is 'Proper'. 54.3% of students do not satisfy their curriculum. But, 51.2% of students would recommend high school students for entrance to TKM school. 77.9% of students think 'TKM doctor should use modern medical device'. 92.7% and 61.9% of students think 'Needed' toward 'Cooperation of western medicine and Korean medicine', and 'Medical unification' each. There are correlations ; (1)'recognition toward ratio of curriculum', (2)'satisfaction of curriculum', (3)'degree of recommendation to enter the TKM School', (4)'relation between TKM and Traditional Chinese Medicine(TCM) or Complementary and Alternative Medicine(CAM)'. Conclusions : Student's satisfaction of education is not quite high than satisfaction of TKM study itself. Most of respondents agreed usage of medical devices. The more they thought that they had curriculum for western medicine, the lesser they thought that medical unification was ont needed. Further studies are needed to assess satisfactions of students for their education with more accuracy results.
주성준(SungJun Joo) 한국조명·전기설비학회 2018 조명·전기설비학회논문지 Vol.32 No.2
Electric power conversion system market is expanding as renewable energy industry rapidly grows. Most of these electric power conversion systems typically ranging from 10kW to 250kW, are controlled by high speed digital signal processor. This paper proposes a three phase inverter system each arm of which is equipped with DSP together with gate driver. In existing inverters, main DSP generates PWM signals and controls all three arms. In the proposed inverter, each arm is independently self-controlled by dedicated DSP that measures phase voltage/current and generates PWM signals, according to synchronization and control reference data sent by main DSP via serial communication ie. CAN communication. The proposed controller can be used for unballenced 3phase load. The experimental results are proposed for proving the control methode.
역률 보상 반도체 IP3003을 이용한 역률 보상기의 효율 분석
주성준(Joo SungJun),이영규(Lee YoungKyu) 한국조명·전기설비학회 2007 한국조명·전기설비학회 학술대회논문집 Vol.2007 No.5월
In this paper we introduce the IP3003 which provides excellent Power Factor and Total Harmonic Distortion to the power system. It is developed by Interpion Semiconductor co. LTD. However, the efficiency of power factor correction system is very difficult to analyze mathematically. In this paper, we use the numerical simulation methods for analyzing PFC systems.