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EMS NETWORK Topology 알고리즘에 대한 연구
유현정(Hyun-Jung Yu),최영민(Young-min Choi),김민배(Min-bae Kim),김광호(Kwang-ho Kim),박용조(Yong-Jo Park),김성학(Sung-Hak Kim) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
최근 들어 전력 계통은 점차 복잡해지고 계통의 규모 역시 빠른 속도로 성장하고 있다. 한국전력거래소는 전력계통의 안정적, 경제적 운영을 담당하고 있는 기관으로 ‘01년 현재의 에너지관리시스템(EMS)를 도입하여 실시간 전력계통에 대한 정확한 판단을 기반으로 전력계통의 안정성과 경제성 확보에 주력하고 있다. EMS의 대표적인 기능은 계통데이터의 수집(SCADA), 자동발전제어(AGC), 계통해석(NA) 등으로 대별되며, 이중 계통해석 기능은 프로그램 규모면에서 가장 큰 부분을 차지하고 있다. 계통해석 기능은 또다시 상태추정 (SE), 상정사고분석(CA), 안전도해석(SENH), 고장해석 (SCT) 등의 프로그램으로 구성되어 다양한 실시간 계통 해석을 수행하게 된다. 전력계통 해석은 먼지 대상계통을 수학적 모델로 정식화하기 전에 계통망의 기하학적 구조를 기술하는 단계가 필요한데 이를 토폴로지 처리라 고 하며, 보통 그래프이론인 노드(Node)와 마디(Branch)를 사용하여 전력계통망을 구성하는 요소들의 연결관계를 정의하게 된다. 본고는 이론적 수준을 넘어 EMS의 계통해석 기능에서 실계통을 해석하기 위해 쓰이고 있는 토폴로지 처리의 기본 알고리즘을 분석하여 국내 전력산업 기술 선진화에 기여하고자 한다.
유현정(Hyun Jung Yoo) · 김성희(Sung Hee Kim) · 김혜미(Hye Mi Kim) · 정희경(Hee Kyoung Jung) 충북대학교 생활과학연구소 2008 생활과학연구논총 Vol.12 No.2
Recently, women are more capable than men, i.e., alpha girls' activities are noticeable. Alpha girls are an elite group to lead a future society. Since their consumption life can be a meaningful role model for other women of the similar age or other groups, they are the subject worthy to be noted. In this regard, this research measured the alpha girl index for female university students and, as a result, classified them into three groups such as alpha girl, medium alpha girl, non-alpha girl. And this research analyzed if there would be any difference in consuming feature pursuant to a difference in alpha girl index. The result of analysis is as follows: Firstly, the relation with a father, equality, self-development, choice of job, character, and awareness on outward appearance, etc. showed a statistically significant difference among alpha girl, medium alpha girl, and non-alpha girl groups. Secondly, as a result of comparing the consuming style among alpha girl, medium alpha girl, and non-alpha girl, a factor per each area showed a similarity as well as a great difference. Thirdly, although alpha girls showed an outstanding performance in terms of academic record, social activity, and character, etc. in comparison to others, a maturity in awareness was not that supported in comparison to their excellent individual capability. In particular, in terms of a consuming aspect, it was insufficient to find that they had a remarkably higher level of consuming value than non-alpha girl.
유현정(Hyun Jung Yoo),구본정(Bon Jeoung Gu),권희원(Hee Won Kwon),김효정(Hyo Jung Kim) 충북대학교 생활과학연구소 2007 생활과학연구논총 Vol.11 No.1
The purpose of this study was to explore the consumers" awareness and information needs for indication and advertisement of health-functional foods. The questionnaire survey method was utilized to collect data, and 300 consumers were selected as a sample. The major findings as follows;<BR> 1. The product indication was adequate but advertisement of broadcast media and print media were not.<BR> 2. Consumers" interest of health-functional foods was common level, and between of the lowest income group and the highest income group were relatively high average degree on the interest of health-functional foods<BR> 3. Consumers" knowledge about health-functional foods was low. Consumers answered a wrong answer for 5 questions of 7 questions.<BR> 4. Consumers" information needs for health-functional foods were high in the side of the comparisons between health-functional foods and medicine, information about the indication and types of health-functional foods.
고속 기울기 검출과 상관도 정합을 이용한 인쇄악보 인식
김경란(Kyeong-Ran Kim),김정환(Jung-Hwan Kim),성진호(Jin-Ho Sung),송정웅(Jung-Woong Song),유현정(Hyun-Jung Yun),유훈(Hoon Yoo) 한국멀티미디어학회 2007 한국멀티미디어학회 학술발표논문집 Vol.2007 No.1
우리가 본 논문에서 제안하는 인쇄악보 인식은 악보 이미지에서 배경과 악보를 구분하기 위해 최적의 문턱 값을 구해 이진영상으로 변환한 뒤 기울기 값을 계산해서 이미지의 기울기를 보정한다. 보정된 영상에서 오션을 효율적으로 찾고, 이를 이용하여 오션에 음에 대한 주파수를 할당한다. 음표를 인식하기 전에 전처리로써 잡음을 제거하고, correlation matching을 통해 음표를 인식한다. 실험 결과는 회전과 잡음에 무관하게 악보를 인식함을 보여준다.
김민희,김자혜,신상호,노영호,유현정,김훈,김규곤,윤화정,고우신,Kim, Min-Hee,Kim, Ja-Hye,Shin, Sang-Ho,Roh, Youn-Ho,Yu, Hyun-Jung,Kim, Hoon,Kim, Kyu-Kon,Yoon, Hwa-Jung,Ko, Woo-Shin 대한한방안이비인후피부과학회 2006 한방안이비인후피부과학회지 Vol.19 No.2
Background : Many doctors are under a bias toward clinical severity in patients with atopic dermatitis. But the various studios show that atopic dermatitis may produce a range of impacts on the qualify of lift . Nevertheless there is much to be desired about the association between the quality of lift and atopic dermatitis in the department of Dermatology in Korean medicine. Objective : This study was conducted to investigate the impact of the atopic dermatitis on quality of life and explore prognostic factors that influence outcomes. Methods : 70 patients were recruited in this study rho write out more than 90% of Skindex-29 questionnaires. The function of total scores and three domain scores and SCORAD index was investigated and the correlation of each domain scores also . Result : The total scores, showed significant correlation with three domain scores in atopic dermatitis. The correlation of each three domain scores were significant. SCORAD index showed significant correlation with three domain scores and total scores. Conclusion : In this study atopic dermatitis efface of the quality of life in physical, social, and psychological factors. So we considered to the quality of life as well as clinical severity in patient with atopic dermatitis.
황태준 ( Tae Jun Hwang ),김정순 ( Jeong Soon Kim ),권유석 ( Yoo Seok Kwon ),유현정 ( Hyun Jung Yu ),김현수 ( Hyun Soo Kim ),허선 ( Sun Huh ),최창규 ( Chang Kyu Choi ),임연정 ( Yeun Jung Lim ),김도훈 ( Do Hoon Kim ),최정희 ( Jeong 대한천식알레르기학회 2005 천식 및 알레르기 Vol.25 No.4
Eosinophilic mcningitis is defined as the presence of 10 or more eosinophils per microliter in the cerebrospinal fluid (CSF) or eosinophilis of at least 10% of the total CSF leukocyte count. Eosinophilic meningitis is a rare disease and the most common cause is the invasion of the central nervous system by helminthic parasites, particularly Angio-strongylus cantonensis. Toxocara canis, a common intestinal parasite of dog, has been also reported to cause eosinophilic meningitis. We report a case of eosinophilic meningitis which was proven to be a human toxocariasis by the serologic test. (Korean J Asthma Allergy Clin Immunol 2005;25:324-327)