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이종인(Lee Jong-In),유병규(Yu Beyng-Gyu),유권종(Yu Gwen-Jong),김흥근(Kim Heung-Geun) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
Grid-connected systems operating in conjunction with a commercial system because the system protection coordination, power quality, harmonic current generation, control and islanding detection of problems and challenges are raised. Islanding detection among other things, as required by the necessity to guarantee the reliability of detection techniques has been steadily on research. In this paper, the phenomenon itself actively driving the change in frequency from the frequency variation technique and the change in cf using the correlation of the frequency change detection method is proposed and a new single operation through simulation verified the validity and effectiveness.
유아동작교육, 유아체육교육의 교과목 이수에 따른 유아교사의 유아체육활동에 대한 인식 및 실태 조사
이종향(Jong Hyang Lee),김나림(Na Rim Kim),김치곤(Chi Gon Kim) 한국열린유아교육학회 2013 열린유아교육연구 Vol.18 No.6
본 연구의 목적은 유아교사의 유아동작교육, 유아체육교육의 교과목 이수에 따른 유아체육활동에 대한 인식과 실태를 분석하여 유아체육활동의 활성화 방안을 모색하는데 있다. 본 연구를 위한 설문지는 유아체육활동 인식 및 실태 조사와 관련된 문헌을 분석한 후 전문가 협의를 통해 개발하였다. 개발된 설문지는 일반적 배경, 유아체육활동에 대한 인식, 유아체육활동의 실태, 유아체육활동 활성화 방안으로 총 21문항으로 구성되었다. 연구대상은 예비교사시절에 유아동작교육, 유아체육교육의 교과목 이수가 있고 현재 유아교육기관에 근무하고 있는 교사 251명이다. 수집된 자료는 t-검증 또는 χ²-검증으로 분석하였다. 연구결과, 유아동작교육과 유아체육교육의 교과목 이수에 따라 유아체육활동에 대한 인식과 실태에 있어 부분적으로 유의한 차이가 있는 것으로 밝혀졌다. This study analyzes the status and early childhood teachers` awareness of young children`s physical activities according to the experience of teachers` completion of movement education or physical education for young children. The paper discusses ways to promote the efficiency of young children`s physical activities. After reviewing the related literature and research, a questionnaire was developed in collaboration with early childhood experts. The questionnaire is composed of 21 questions related to “teachers` background”, “teachers` awareness of young children`s physical activities”, “status of young children`s physical activities”, “activation plan for young children`s physical activities”. The subjects used in this study were 251 early childhood teachers who have completed movement education or physical education for young children. Data analysis was conducted by t-test and χ2-test. The results indicate significant differences partially according to teachers` background variable in the status and teacher`s awareness of young children`s physical activities.
이종서(Jong Soe Lee),김승남(Seung Nam Kim),김진(Jin Kim),이재학(Jai Hak Lee),주상용(Sang Yong Choo),송경섭(Kyung Sup Song) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.3
The aneurysm of submucosal artery is rare, from which focal pressure may lead to superficial erosion of the overlying mucous membrane and intraluminal hemorrhage with rupture. Up to the present time, 39 aneurysms of jeunal, ileal and colic artery branches were reported, and jejunal artery is the most frequent site of aneurysm. The arteriography is the definitive study for the visceral branch aneurysm, and the definitive management includes excision, ligation or small bowel resection. Recently, we experienced a case of aneurysm rupture of a submucosal artery in the jejunum associated with massive gastro-intestinal bleeding. This report summarizes our experience and review of the literati.re.
정신분열병 환자에서 항정신약물 유지치료 시 재발에 대한 연구
이종일(Jong-Il Lee),한희종(Hee-Jong Han),윤해주(Hai-Joo Yoon),정은기(Eun-Kee Chung),장동원(Dong-Won Chang),김성택(Sung-Taek Kim) 대한사회정신의학회 2006 사회정신의학 Vol.11 No.1
연구목적: 재발방지는 정신분열병 유지치료에서 가장 중요한 목표이다. 이 연구는 전형적항정신약물인 haloperidol과 비전형적항정신약 물인 risperidone과 olanzapine을 사용하는 경우 3년 동안의 추적조사를 통해 재발방지를 위한 효과를 비교하고자 계획되었다. 방 법: 연구자들은 성인외래치료를 받고 있는 대상자들의 병록기록을 조사하여 haloperidol군 305명, risperidone군 179명, 그리고 olanzapine군 40명을 선정하였다. 모든 대상자들은 안정된 임상상태를 유지하고 있었다. 연구자들은 3년 동안의 재발로 인한 입원 비율과 Kaplan-Meier 생존율을 분석하였다. 결 과: 재발이외의 이유로 분석대상의 약물이 중단된 경우는 haloperidol군 43.9%, risperidone군 31.3%, 그리고 olanzapine군 37.5% 였다. 이들을 제외한 결과 재발로 인한 재발률은 각각 38.0%, 18.7%, 36.0%이었다. Risperidone군이 haloperidol군에 비해 유의하게 낮은 재발률을 보였다(χ 2 =5.419, df=1, p=0.02). Kaplan-Meier 생존분석에서 재발위험률은 haloperidol군 65.1%, risperidone군 44.1%, 그리고 olanzapine군 60.0%이었다. 생존율은 각각 34.9%, 55.9%, 40.0%이었다. Risperidone군이 hal-operidol군에 비해 높은 생존률을 보여주었다(log-rank 18.29, df=1, p=0.00). 결 론: 임상적으로 안정된 상태의 성인 정신분열병 환자 외래통원치료 시 risperidone을 사용하는 경우 haloperidol을 사용하는 경우에 비해 낮은 재발률과 높은 생존율을 보여주었다. Objective:Prevention of relapse is a major goal of maintenance treatment in patients with schizophrenia. This study examined the treatment response of haloperidol, risperidone, and olanzapine by the way of relapse rates for 3 years in schizophrenic patients Methods:Authors examined medical records of subjects who have been taken medications at adult outpatient’s clinic. Data were analyzed from three groups of haloperidol(N=305), risperidone(N=179), and olanzapine(N=40) treatment. All of subjects have been in stable condition. We analyzed data by relapse rates and Kaplan-Meier survival analysis for 3 years. Results:Of the 305 patients to haloperidol, the 179 patients to risperidone, and the 40 patients to olanzapine who remained in the analysis of relapse, 43.9%, 31.3%, and 37.5%, respectively, discontinued treatment for reasons other than relapse. The Admission rate due to relapse was showed 38.0%, 18.7%, and 36.0%, respectively. Patients in the risperidone group had a lower admission rate than the haloperidol group(χ 2 =5.419, df=1, p=0.02). In Kaplan-Meier survival analysis, the risk of relapse was showed 65.1% in haloperidol group, 44.1% in risperidone group, and 60.0% in olanzapine group. Survival rate was 34.9%, 55.9%, and 40.0%, respectively. Patients in the risperidone group had a higher survival rate than the haloperidol group(log-rank 18.29, df=1, p=0.00). Conclusion:Adult outpatients with clinically stable schizophrenia have a lower risk of relapse and a higher survival rate if they are treated with risperidone than if they are treated with haloperidol.
증례보고 : 베타 수용체 차단제와 칼슘 통로 차단제를 복용 중인 환자에서 상완신경총 차단 후 지연 발생한 심정지
이종연 ( Jong Yeon Lee ),이형석 ( Hyung Suk Lee ),박사현 ( Sa Hyun Park ),길현주 ( Hyun Jue Gill ),이상우 ( Sang Woo Lee ),김승호 ( Seung Ho Kim ),정금희 ( Kuem Hee Chung ),김민성 ( Min Sung Kim ),이헌락 ( Heon Rak Lee ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.6
A Bezold-Jarisch reflex (BJR) mediated vasovagal syncope is the most common neurally mediated reflex characterized by the sudden failure of the autonomic nervous system and have been reported in patients undergoing a peripheral nerve block. The concomitant administration of a β-adrenoreceptor antagonist and calcium channel blocker have a synergistic suppressant effect on the autonomic nervous system and interact with the anesthetics significantly. We report a case of a 57-year-old female patient with essential hypertension controlled with lercanidipine and carvedilol. Cardiac arrest developed with spontaneous respiration 50 min after the brachial plexus block to remove a plate in the humerus. Epinephrine was administered and the pulse immediately returned to a normal sinus rhythm. This event might be vasovagal syncope mediated by BJR, and realted to the antihypertensive medication used. (Korean J Anesthesiol 2006; 51: 752~5)
이종인(Lee Jong-In),유병규(Yu Beyng-Gyu),유권종(Yu Gwen-Jong),김흥근(Kim Heung-Geun) 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.2009 No.11월
The Power Conditioning System is Power Transfer System which make array DC current to the Grid sinusoidal current. These are Low Frequency Transformer Inverter Type, High Frequency Transformer Inverter Type and Transformer-less Type. Low Frequency Transformer Type has a Excellent Isolation property, but doesn't have competitiveness in Size and Cost. Also High Frequency Transformer Type has a good Isolation property but there are many steps in Power transfer Switching. Nowadays, Transformer-less Type inverter change a transformer to DC/DC Converter which is small and cost effective. In this paper shown the DC/DC Converter Transformer-less Type multi-string inverter design and simulation. The Control Algorithm will be introduced and Simulation was accomplished.