급성 심근경색후 퇴원전 운동 부하검사상 예후 평가 지표로서 ST/HR Index 및 Rate-Recovery Loop의 가치

원수연,박양규 대한순환기학회 1994 Korean Circulation Journal Vol.24 No.4

유아기 자녀를 둔 취업모의 아동기 애착경험 및 부모역할만족도와 양육행동 간의 관계

원수연,최미경 한국아동학회 2014 한국아동학회 학술발표논문집 Vol.2014 No.11

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.

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.

IEEE1547-2018 Category3 계통연계규정에 대한 연료전지 시스템의 제어 전략

원수연(Su-Yeon Won),이교범(Kyo-Beum Lee) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.7

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.

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.

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

N/A 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.

난치성 이형 협심증 환자에서 Clonidine 치료경험 1예

전일문,원수연,정진원,박양규,박옥규 대한순환기학회 1993 Korean Circulation Journal Vol.23 No.6

토지피복지도를 활용한 IUCN 생태계유형분류 국내 적용

손희정,원수연,전정은,박은희,김도희,한상학,송영근 한국환경생태학회 2023 한국환경생태학회지 Vol.37 No.3

Over the past few centuries, widespread changes to natural ecosystems caused by human activities have severely threatened biodiversity worldwide. Understanding changes in ecosystems is essential to identifying and managing threats to biodiversity. In line with this need, the IUCN Council formed the IUCN Global Ecosystem Typology (GET) in 2019, taking into account the functions and types of ecosystems. The IUCN provides maps of 10 ecosystem groups and 108 ecological functional groups (EFGs) on a global scale. According to the type classification of IUCN GET ecosystems, Korea’s ecosystem is classified into 8 types of Realm (level 1), 18 types of Biome (level 2), and 41 types of Group (level 3). GETs provided by IUCN have low resolution and often do not match the actual land status because it was produced globally. This study aimed to increase the accuracy of Korean IUCN GET type classification by using land cover maps and producing maps that reflected the actual situation. To this end, we ① reviewed the Korean GET data system provided by IUCN GET and ② compared and analyzed it with the current situation in Korea. We evaluated the limitations and usability of the GET through the process and then ③ classified Korea’s new Get type reflecting the current situation in Korea by using the national data as much as possible. This study classified Korean GETs into 25 types by using land cover maps and existing national data (Territorial realm: 9, Freshwater: 9, Marine-territorial: 5, Terrestrial-freshwater: 1, and Marine-freshwater-territorial: 1). Compared to the existing map, “F3.2 Constructed lacustrine wetlands”, “F3.3 Rice paddies”, “F3.4 Freshwater aquafarms”, and “T7.3 Plantations” showed the largest area reduction in the modified Korean GET. The area of “T2.2 Temperate Forests” showed the largest area increase, and the “MFT1.3 Coastal saltmarshes and reedbeds” and “F2.2 Small permanent freshwater lakes” types also showed an increase in GET area after modification. Through this process, the existing map, in which the sum of all EFGs in the existing GET accounted for 8.33 times the national area, was modified so that the total sum becomes 1.22 times the national area using the land cover map. This study confirmed that the existing EFG, which had small differences by type and low accuracy, was improved and corrected. This study is significant in that it produced a GET map of Korea that met the GET standard using data reflecting the field conditions. 인간 활동으로 광범위한 자연 생태계 변화로 지난 몇 세기 동안 전 세계적으로 생물다양성이 심각하게 위협받고 있다. 생태계의 변화 양상을 파악하는 것은 생물다양성 위협을 파악하고 관리하는 데 필수적이다. 이러한 필요성에 따라 IUCN 의회는 2019년에 생태계의 기능과 유형을 고려한 IUCN Global Ecosystem Typology(GET)를 구성했다. IUCN은 10개의 생태계 군계, 108개의 생태기능별 토지 유형(EFG; Ecological Functional Group)을 전 지구적 범위에서 지도로 제공하고 있다. IUCN GET 생태계의 유형 분류에 따르면 국내 생태계는 Realm (1수준)이 8개, Biome (2수준)이 18개, Group (3수준)은 41개 유형으로 분류된다. IUCN이 제공하는 GET의 경우 전 세계 규모로 제작되었기 때문에 해상도가 낮고 실질적인 토지 현황과 일치하지 않는 경우가 많다. 본 연구는 토지피복지도를 활용하여 국내 IUCN GET 유형 분류의 정확도를 높이고 실질적인 현황을 반영한 지도를 제작하고자 했다. 이를 위해 ① IUCN GET에서 제공하는 국내 GET 데이터 체계를 검토하고, ② 이를 국내 현황과 비교 분석하였다. 이 과정을 통해 GET의 한계와 활용 가능성을 평가하고 ③ 이후 국가자료를 최대한 활용하여 국내 현황을 반영한 국내 GET 유형 분류를 수행하였다. 본 연구는 토지피복지도와 기존 국가자료를 최대한 활용하여 국내 GET를 총 25개 유형으로 분류했다(Terrestrial Realm :9, Freshwater: 9 Marine-Terrestrial: 5, Terrestrial-Freshwater :1, Marine-Freshwater-Terrestrial:1). 기존 지도와 비교했을 때 수정된 국내 GET의 경우 ‘F3.2 Constructed lacustrine wetlands’, ‘F3.3 Rice paddies’, ‘F3.4 Freshwater aquafarms’, ‘T7.3 Plantations’가 면적이 가장 많이 축소되었다. 온대 산림(T2.2)의 면적이 가장 많이 늘어났고, ‘MFT1.3 Coastal saltmarshes and reedbeds’, ‘F2.2 Small permanent freshwater lakes’등 3개 유형 또한 수정 후 GET 면적이 증가했다. 해당 과정을 통해 기존 GET에서 모든 EFG의 합이 국토 면적의 8.33배를 차지하던 기존의 지도를, 토지피복지도를 활용하여 총합이 국토 면적의 1.22 배가 되도록 수정하였다. 이를 통해 유형별 차이가 작고 정확성이 떨어진 기존의 EFG가 본 연구를 통해 개선 및 수정되었음을 확인하였다. 본 연구는 현장 요건을 반영한 데이터를 최대한 활용하여 GET 기준에 상응하는 한국의 GET 지도를 제작한 것에 그 의의가 있다.