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Jung‑Hun Lee,Min‑Su Park,Hong‑Seon Ahn,Kyung‑Won Park,Jun‑Seok Oh,Seung‑Gyu Jeon,Dong‑Kyu Kim,Jae‑Eon Kim 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4
When large scales DG are connected to the distribution system of unidirectional power currents, bi-directional power currents are formed, making it impossible to use conventional overcurrent protection methods alone to detect and isolate fault sections for ground and short-circuit faults. To solve these problems, this study proposed the method of protection against single-line-ground fault of common neutral line multi-contact local power distribution system using distance relay and directional relay. The proposed protection method was applied to the common neutral multi-ground distribution system to validate the protection against single-line-ground fault through the PSCAD/EMTDC software package and efectively detect and isolate only the zone of single-line-ground fault without malfunctions.
이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1
연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.
실내 다중경로환경에서 UWB변복조 시스템의 성능에 관한 연구
정향,김언곤 한밭대학교 정보통신전문대학원 2004 정보통신전문대학원 논문집 Vol.2 No.1
본 논문에서는 UWB변복조 시스템의 성능을 컴퓨터 시뮬레이션을 이용하여 측정하였다. 먼저 실내 경로 환경을 고려한 변복조 시스템에 BPSK, QPSK, 16QAM 변조 방식을 적용하여 성능을 분석 하였다. 성능 방안으로 AWGN 환경과 실내 다중경로 환경에서, 부호율 1/2와 1/3을 적용한 길쌈 부호화를 채용하였다. In this paper, we have measured the performance of UWB modulation system using computer simulation. At first, the performance of modulation system has been analyzed using BPSK, QPSK and 16QAM based on indoor multipath environment. To improve system performance of the proposed system, convolution code has been adopted using rate 1/2 and 1/3 in AWGN channel and indoor multipath environments.
金中彦 群山大學校 1984 論文集 Vol.7 No.-
To investigate an interest of students in Gun San National College about sports, freshmen and sophomores were chosen as objects of study and its investigation methods were through references and question papers. The results were as follows: 1. The most favorite sports was baseball and its proportions among male and female students were 33.5% and 26.4%, respectively. In case of male, various selection of ball games was shown and skillful games were in the order of football(16%), ping-pong(14.4%), volleyball(13.5%), and baseball(11.4%). In case of female, badminton and ping-pong which seemed to be some what not violent for girls were mostly chosen and its proportions were 33.9% and 24.2%, respectively. Students concentrated their interest to tennis and 41.5% of male and 40.2% of female wanted to learn it. In addition, male was also interested in contests. 2. The main reasons for the likes of sports were because they liked it(30%) and because it was suitable for them (24.1%). The reasons for learning sports were because it was worth playing as a recreation (35.4%) and because it was good for health (25.9%). Moreover, most students were interested in sports not only for the point of enjoying but also for health. But most students seemed to lose their interest because of no chance to learn. Most students liked to play sports whenever they had enough time, especially they wanted to have a time for sports at daybreak or after school because it was convenient for them. 3. Most students (69.5%) were favorite for and were most favorite for sports and students who were dislike for and most dislike for sports were only 3.7%. Students' family had a high interest for sports and they did not opposite to them for playing sports. So it contributed to the students for their activity of sports. 4. In their opinion about school-hours, most students wanted to practice for the most time and to learn their favorite sports with their own choice.
敎師들의 健康및 Sports 活動에 對한 關心度 調査 硏究
金中彦 群山大學校 1983 論文集 Vol.5 No.-
The purpose of this study is to offered the reference materials for advanced in social-sports, and the analysis on the consciousness, activity or attitudes on sports and health state of secondary school teachers. The study was carried out from 480 teachers of secondary in Gun-San-city through reference materials and questionnaire from March 15 to December 20 of 1982. The results of the survey showed as follows; 1. The state of health. 36% of them considered them selves to be commonly, and 23% of them appeared them selves to anxious. In a daily life 40% were responded to strain of service, insufficiency of exercise 26% were represented, and the state after exercise 60% were occupied fell well. 2. Leisure hour The leisure hour of the secondary teachers were mainly spend be at home(42%) and they were mainly with enjoy Radio, TV(26%) or domestic aid.(60%). For the leisure activity appeared that they spend less than 5,000 Won per monthly expense and it occupied beyond 70%. 3. Sport for health managements; The teachers liked jogging(22%), and table-tennis(15%) Because it is good health and learn to simplicity.(23%) The secondary teachers sports shows that they are enforced inexpensive, selected learn to simplicity, and for the good health.
공터키안(Empty sella)을 동반한 급성췌장염으로 발현된 부갑상선 선종 1예
전언주,오지혜,배경륜,장샛별,전승운,정의달,손호상,원규장 영남대학교 의과대학 2009 Yeungnam University Journal of Medicine Vol.26 No.1
The incidence of coexisting hyperparathyroidism and empty sella syndrome is rare and the etiology and incidence of their coexistence is not known. The association of hyperparathyroidism and the empty sella syndrome may be related to multiple endocrine neoplasia (MEN) syndrome due to a genetic disorder. We experienced a rare case of hyperparathyroidism presenting as acute pancreatitis combined with empty sella. We report here a 37-year old female who manifested epigastric pain because of acute pancreatitis. She had hypercalcemia due to parathyroid adenoma. A pituitary gland was not visible in the sella turcica on MRI scans. On genetic analysis, she did not show a mutation of the MENIN gene. Empty sella is thought to be a coincidental finding with hyperparathyroidism.
金中彦 群山大學校 1985 論文集 Vol.11 No.-
To investigate the fencing players' traumatic injury, 109 players who registered with the fencing Federation of Korean University during March to October, 1985 were the subject of study. The results were as follows: 1. Total traumatic injuries to men-players were 429 cases and 237 cases to women-players. Their injuries were mainly caused during their hard training. Each player was injured 6.1times on an average during his player life. 2. The highest injured portion to players was the joints of feet. 3. Players who were injured at the same portion only once were 288 cases(43.3%) and 50 cases(7.5%) were for five times. 4. 38.2% of men-players treated their injuries by physical therapy and 31.7% of woman players by drug. For lasting treatment for their injury, they were generally treated at a hospital or by a herb doctor. Their duration of medical treatment was for 2-4weeks, but 61 players (55.9%) were training for a race under incomplete treatment condition.
朴彦坤,이은정 홍익대학교환경개발연구원 2001 환경개발연구논문집 Vol.6 No.-
Architectural space is limited and that limitation define a boundary. Physical characteristics of this boundary is that it has a continuity and these come into existence by various elements such as its texture, space, form, symbol, use, and geographical features. In Korean traditional architecture, building compositions are not made by one building standing up, but by several buildings making a boundary. These are shown in palaces, temples, and residential architectures. In these compositions, the Gallery(Hoe-rang) act as a principal part for limiting and linking spatial boundary of each buildings. But studies until now have only shown the Gallery(Hoe-rang) as only an attached feature that it was added to the study of main buildings. It is certain that its main function is connection of spaces, but other than this, it limits spatial boundary, and acts as a storage. Since the introduction of Buddhism in Korea, the main type of its temples had a strong symmetry and the Gallery(Hoe-rang). But as free arrangement of temples became the main current since SunJong of late Shilla, it was not made since middle KoRyo dynasty. This means that in traditional temple architectures, the Gallery(Hoe-rang) is limitedly made until united-Shilla era. Therefore in this study, temples with the Gallery(Hoe-rang) from the time of introduction of Buddhism to late united-Shilla dynasty were studied by documents and real existing temples. And with the Gallery(Hoe-rang) of Korean ancient temples, its arrangement symmetry, spatial relationships were analyzed to come up with architectural characteristics. The results are as followings: 1) The boundary of the Gallery(Hoe-rang) is not discretly made, but it changes by transition of arrangement, and symbolizes each era. 2) As to the relationships of the Gallery(Hoe-rang) and other buildings, such as Kangdang, Jong-ru, Kyung-ru, the relationship is decided by characteristics of space which is surrounded by the Gallery(Hoe-rang). 3) An independent space has a definite distinction compared to its surrounding space that it is meant to devide and cut. In ancient temples, these limitation of space is expressed by an active use of the Gallery(Hoe-rang).