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환경 DNA 기법을 활용한 광교호수공원 일대의 시기 및 수환경 특성별 어류상 분석
원수연,강유진,송영근,Won, Su-Yeon,Kang, Yu-Jin,Song, Young-Keun 한국환경복원기술학회 2022 한국환경복원기술학회지 Vol.25 No.5
This study aims to understand the relationship between the distribution of fish species in the two water ecosystems and the habitat factors according to the survey period targeting Gwanggyo Lake Park in the city. There are studies on the appearance and distribution of species by applying eDNA to freshwater ecosystems. However, in the domestic, streams are the target, and studies on the relationship between species distribution and habitat environment in two water environments are lacking. We conducted to analyze the species list and relationship with habitat factors using eDNA research in May and October at 21 points in Gwanggyo Lake Park, Suwon City, which were connected to lakes and streams. As a result, there was no species difference in the water environment according to the survey period. However, the total number of reads during the spawning season(May) was 3,126,482, which was more than double that after the spawning season(October). Tolerant species appeared in Woncheon Lake with a slow or stagnant flow, but there was no significant correlation between species and habitat factors depending on the survey period. On the other hand, intermediate and sensitive species appeared in the Woncheon stream with high flow. There was a significant correlation between the low temperature during the spawning season and the high dissolved oxygen content after the spawning season(P<0.001, Tem.: 20.7±2.6℃, DO: 8.6±1.7). It is expected that environmental DNA will be used to survey species and suggest monitoring methods according to the survey period.
IEEE1547-2018 Category3 대응을 위한 연료전지 시스템의 인버터 제어 전략
원수연(Su-Yeon Won),이교범(Kyo-Beum Lee) 대한전기학회 2022 전기학회논문지 Vol.71 No.1
This paper presents an inverter control scheme for fuel cell systems in IEEE1547-2018 Category3. The current configuration of Grid-Connected fuel cell system has limitations Category3’s LVRT (Low Voltage Ride Through) reponse, additional inverter are needed. The inverter operates in an abnormal state where the grid voltage is unstable, and normally supplies the voltage to BOP (Balance of Plant) of the fuel cell system. Simulated verification of the inverter control scheme was performed to change the voltage source to the BOP from grid to inverter during abnormal conditions.
원수연(Soo Yeon Won),전일문(Il Mun Jeon),박명선(Myung Sun Park),장명규(Myoung Kyu Jang),유재규(Jae Kyu Ryu),정진원(Jin Won Jeong),박양규(Yang Kyu Park),박옥규(Ock Kyu Park),최종범(Jong Bum Choi) 대한내과학회 1994 대한내과학회지 Vol.47 No.1
Chylopericardum is particularly uncommon and usually secondary to intrathoracic operation, chest trauma, primary or metastatic tumors, chronic inflammation and congenital lymphatic anomaly which cause obstruction of the lymphatic drainage. However, primary chylopericardium unrelated to trauma or chylothorax is a rare condition and its etiology remains obscure in most cases. We have experienced a 69-year-old female patient with primary chylopericardium who was treated with repeated pericardiocentesis, pericardiectromy, and thoracic duct ligation. So we report a case of primary chylopericardium with a review of literature.
이면성 심초음파도에 의한 관상동맥 우회로술후 좌심실 국소 벽운동의 변화
원수연(Soo Yeon Won),전일문(Il Mun Jeon),박명선(Myoung Seon Park),장명규(Myoung Kyu Jang),유재규(Jae Kyu Ryu),정진원(Jin Won Jeong),박양규(Yang Kyu Park),박옥규(Ock Kyu Park),최종범(Jong Bum Choi) 대한내과학회 1993 대한내과학회지 Vol.45 No.6
Objectives: Studies on the effect of Coronary Artery bypass Graft Surgery (CABG) on segmental left ventricular wall motion have yield conflicting results. So we assessed changes of segmental left ventricular wall motion in patients with coronary artery disease after CABG and advantage of 2dimensional echocardiography on evaluating its effectiveness. Methods: 20patients with coronary artery disease (12unstable angina pectoris, 8 acute myocardial infarction) were studied with 2-dimensional echocardiography before and early 8.3±3.3 (mean±SD) and late 204.5±105.9 days after CABG. The changes in segmental wall motion were assessed quantitatively by assigning a segmental wall motion score recommended by ASE (1: normal, 2: hypokinesia 3: akinesia, 4: dyskinesia, 5: aneurysm) to each of 16echocardiographically defined segments by 45-degree rotating apical 4-plane views (8 in basal, 8 in apical). Results: 1) The mean left ventricular segmental wall motion score did not change significantly (1, 10±0.37, l.25±0.47, 1.12±0.40; befror, early and late after CABG respectively). 2) There was a significant change in septal wall motion at early postoperative study [37 (46%) of the 80septal segments; 1.14±0.41, 1.59±0.59(p<0.001): before and early after CABG respectively], and the worsening segments were nearly normalized at late postoperative study [24(92%) of 26segments]. 3) The segments with normal motion preoperatively remained normal late postoperatively [169(99%) of 171normal segments preoperatively]. 4) Most of the preoperative abnormal segments [23(96%) of 24segments] were in patients with acute MI and a half of them (11segments) were normalized at late postoperative study. 5) While the anterior or anteroseptal preoperative abnormal segments were usually improved postoperatively, the posterior or inferior abnormal segments were not changed significantly. Conclusion: A part of the abnormal segmental left ventricular wall motion in coronary artery disease can be improved after CABG and 2-dimensional echocardiography may be beneficial to assessing not only the changes of segmental left ventricular wall motion motion quantitatively but also the effectiveness of CABG.
베트남 하노이시 항다오-동쑤언 걷기거리 활성화 방안 연구
원수연(Nguyen Thi Wuyen),박수정(Park Soo-jung),윤희진(Yun Hee-jin) 한국문화산업학회 2009 문화산업연구 Vol.9 No.2
Worldwide development of cultural strategies is used to improve the regional image in the recent years. Culture Street is one of urban cultural strategies, which can enhance a regional image of the each cities, and structure urban cultural spaces in general as place marketing strategy. Similar cultural practices are already settled down and in progress in Vietnam. Especially, in Hanoi city the Hang Dao-Dong Xuan walking street cultures are surviving with lots of problems at the initial stage. The purpose of this study is to investigate the walking street's recent problems in Hanoi city and proposal way to vitalize the walking street. Through analysis about general status and recent problems of the walking street, three distinct key strategies were suggested for further development, i.e. (1) Street's identity establishment; (2) constituting a complex culture space combined five spaces as historical-cultural space, cultural activities practices space, public performance space, relax space, shopping space; (3) Public information and communication strategy. This study suggests the significant guidelines for the pre and post development of the Hanoi city's place marketing. Worldwide development of cultural strategies is used to improve the regional image in the recent years. Culture Street is one of urban cultural strategies, which can enhance a regional image of the each cities, and structure urban cultural spaces in general as place marketing strategy. Similar cultural practices are already settled down and in progress in Vietnam. Especially, in Hanoi city the Hang Dao-Dong Xuan walking street cultures are surviving with lots of problems at the initial stage. The purpose of this study is to investigate the walking street's recent problems in Hanoi city and proposal way to vitalize the walking street. Through analysis about general status and recent problems of the walking street, three distinct key strategies were suggested for further development, i.e. (1) Street's identity establishment; (2) constituting a complex culture space combined five spaces as historical-cultural space, cultural activities practices space, public performance space, relax space, shopping space; (3) Public information and communication strategy. This study suggests the significant guidelines for the pre and post development of the Hanoi city's place marketing.
유아기 자녀를 둔 취업모의 아동기 애착경험이 양육행동에 미치는 영향
원수연(Su Youn Won),최미경(Mi Kyung Choi) 한국아동학회 2015 아동학회지 Vol.36 No.3
The main purpose of this study was to examine the relationships between childhood attachment, parental satisfaction and the parenting practices of working mothers with young children. The participants were composed of 221 working mothers with young children attending day care centers and kindergartens in Seoul and Gyeonggi Province. The subjects completed questionnaires on childhood attachment, parental satisfaction and parenting practices. The data were analyzed by means of Pearson``s correlation coefficients and multiple regression analysis. It was observed that childhood attachment had an effect on parenting practices. Parental satisfaction was also found to have an effect on parenting practices. In addition, childhood attachment had an effect on parental satisfaction. It was further found that parental satisfaction mediated the relationship between childhood attachment and parenting practices very well. These results clearly indicate that parental satisfaction plays an important role in childhood attachment and parenting practices.