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이승아,김도현,김윤,Lee, Seung-Ah,Kim, Dohyeon,Kim, Yoon 한국멀티미디어학회 2021 멀티미디어학회논문지 Vol.24 No.6
During tensile test, tensile strain of tensile tester is measured by movement distance of upper zig and initial specimen's length. Conventional tensile tester program obtains the tensile strain after the end of the test, however the method is not appropriate in real time because the results are calculated until the test is finished. We suggest a real-time measurement system of tensile strain using ArUco Marker in OpenCV library. The system is designed to detect marker attached on the upper zig and calculate specimen's tensile strain. According to comparison of the calculated data and the results of the tester, errors approximately showed 0.128 mm on 3840×2160 video resolution.
이승아,배자성,김기환,김지일,안창혁,박우찬,송병주,정상설,김정수,Seung Ah Lee,M.D.,Ja Seong Bae,M.D.,Kee Hwan Kim,M.D.,Ji Il Kim,M.D.,Chang Hyuck An,M.D.,Ph.D.,Woo Chan Park,M.D.,Ph.D.,Byung Joo Song,M.D.,Ph.D.,Sang Seol Jung,M.D 대한갑상선-내분비외과학회 2007 The Koreran journal of Endocrine Surgery Vol.7 No.2
Purpose: Endoscopic surgery to treat thyroid neoplasm was developed to solve the aesthetic problems that resulted from conventional open surgery. Although endoscopic thyroidectomy was initially performed in patients with benign thyroid neoplasm, its use has recently been extended to patients with Graves's disease and early cases of thyroid cancer.The purpose of this study was to determine whether this surgical approach is feasible and safe for the treatment of thyroid cancer. Methods: Between December 1999 and April 2006, 132 thyroid cancer patients at our institution were treated by either conventional thyroidectomy or endoscopic thyroidectomy. Endoscopic thyroidectomy was conducted using a gasless anterior neck skin lifting method. The inclusion criteria for endoscopic thyroidectomy in thyroid cancer patients included a tumor size of less than 2cm, absence of extrathyroidal extension, absence of cervical lymph node metastasis, and well differentiated cancers. Results: We performed endoscopic thyroidectomy in 29 thyroid cancer patients. There were no significant differences in operative time, the amount of drainage and the number of retrieved lymph nodes between conventional thyroidectomy and endoscopic thyroidectomy. In addition, although endoscopic thyroidectomy was associated with more complications, it was also associated with a shorter hospital stay. Conclusion: The completeness of surgical resection conducted via an endoscopic thyroidectomy may be comparable to that of conventional surgery, however, a larger series and longer follow-up evaluation are necessary for definitive conclusions to be drawn about its oncologic validity. (Korean J Endocrine Surg 2007;7:103-106)
압력센서가 내장된 보행 분석기를 통한 아치 형성 보행의 생역학적 변수의 특성
이배열 ( Bae Youl Lee ),유승돈 ( Seung Don Yoo ),이승아 ( Seung Ah Lee ),전진만 ( Jinmann Chon ),김동환 ( Dong Hwan Kim ),정용설 ( Yong Seol Jeong ),노성규 ( Seong Gyu Noh ),이미애 ( Mi Ae Lee ),이우진 ( Woo Jin Lee ),김은혜 ( Eun 대한스포츠의학회 2016 대한스포츠의학회지 Vol.34 No.1
The objective of study was to compare biomechanical parameters between normal and arch building gait in healthy subjects. A total of 40 feet from 20 healthy adults were evaluated in this study. The participants were asked to walk on a treadmill comfortably at 2 km/hr for 30 seconds. Then, they were asked to walk after making arch building through raising arches with their feet by pulling the big toe toward the heel. Gait parameters such as geometry, center of pressure, maximum force, and maximum pressure were measured in normal and the arch building gait using a gait analysis system equipped with pressure sensor. Arch building gait demonstrated significantly (p<0.01) decreased forefoot maximum force but significantly (p=0.024) increased heel maximum force compared to normal gait. Maximum pressures of the midfoot and heel were also significantly (both p<0.01) increased. However, the maximum pressures of the forefoot were not significantly (p>0.05) different between the two conditions. Geometry, phase, and time parameters were not significantly (p>0.05) different between the two conditions, either. Although forefoot and midfoot maximum force were significantly decreased in arch building gait compared to those in normal gait, the maximum pressure of forefoot was not significantly changed, indicating decreased area of forefoot contact during arch building gait. The arch building gait moves the center of presser to the hind foot and redistributes the contact area, thus changing the distribution of maximum pressure.
이승아(Lee, Seung-A),이성노(Lee, Seong-No) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.6
The purpose of this study was to examine the cross-sectional changes in cardiorespiratory fitness and daily living fitness according to the aging of elderly women and the effect of cardiorespiratory fitness on daily living fitness. The subjects were 67 elderly women (72.4±5.4 yrs), 65-69 years group (66.3±1.4 yrs, n=23), 70-74 years group (72.7±1.2 yrs, n=20), 75-79 years group (75.9±0.8 yrs, n=14) and over 80 years group (81.5±2.3 yrs, n=10). To measure cardiorespiratory fitness, exercise load test was performed to calculate ˙VO2peak. For daily living fitness, 10 items related to primary activities such as giggling and housework and secondary activities such as mobility, social activities and health promotion activities were selected. As a result, the cardiorespiratory fitness and daily living fitness factors tended to decrease with age. In particular, it was more pronounced in the group over 80 years group. The relationship between ˙VO2peak and daily living fitness showed a significant correlation in all items except agility and dynamic equilibrium. In conclusion, elderly people whose cardiorespiratory fitness deteriorates with increasing age can have a negative effect on daily living fitness, and the importance of physical activity to improve or maintain daily living fitness regardless of age is considered.
이승아 ( Seung-ah Lee ),조기환 ( Gi-hwan Cho ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1
IT 업계에도 저탄소 녹색 성장을 추구하는 Green IT 시대가 찾아왔다. 이에 따라 여러 IT 기업들에서 IT 자원을 소유하지 않고 빌려 쓰는 형태의 클라우드 컴퓨팅이 큰 이슈가 되고 있다. 클라우드 컴퓨팅은 기존의 조직이 유지 보수에 사용하던 인력과 비용을 감소시킬 수 있다는 점에서 경제적 이익을 창출하고 있다. 그러나 다수의 이해당사자(Mlti-tenant)가 존재하는 공공 클라우드 환경에서는 사용자의 인증이 보안 문제로 대두되고 있다. 본 논문에서는 공공 클라우드 환경에서 신뢰할 수 있는 클라우드 서비스를 제공하기 위한 사용자 인증 방법을 제시한다. 사용자는 계약관계로 맺어진 클라우드와 조직 사이에서 클라우드 서비스를 제공받으며 조직으로부터 인증 받는다. 클라우드에서는 조직에서 제공하는 인증 정보와 클라우드의 서비스 제공 정책으로 이루어진 보안연계를 통해 사용자를 확인함으로써 사용자에게 적합한 서비스를 제공한다.
소풍산가미방(消風散加味方)으로 호전된 임신신양(姙娠身痒) 환자 치험 2례
이승아 ( Seung Ah Lee ),유동열 ( Dong Youl Yoo ) 대전대학교 한의학연구소 2011 혜화의학회지 Vol.19 No.2
Purpose: This paper is aim to report the effects of Sopungsan-gamibang(消風散加味方) on the Dermatoses Gravidrum. Methods: Two women who had been suffering from itching, plague. erythema during pregnancy were enrolled in this study and they were diagnosed Dermatoses Gravidrum. They received oriental treatment such as herbal medicine. we gave them Sopungsan-gamibang 3 times. During the treatments, we requested them to visit hospital twice a week. If they could not come to hospital, we called them to take follow-up. Conclusion: This clinical cases indicate that Sopungsan-gamibang is effective in treatment of the Dermatoses Gravidrum and can prevent chronic progress and relapse of symptoms. More clinical data and studies are requested for the treatment of Dermatoses Gravidrum.
윤리적 소비주의 관점에서 Fair Trade가 소비자 행동에 미치는 영향
이승아(Seung A Lee),김광석(Gwang Suk Kim),송장근(Jang Gwen Song) 한국경영학회 2009 經營學硏究 Vol.38 No.1
Fair Trade has experienced increased popularity due to rising numbers of socially concerned consumers. This study intends to gain insights into the drives to the growth of Fair Trade as well as to evaluate its future potential in South Korean market. The purchase intention of Korean consumers on Fair Trade products and their level of ethical consumerism were measured. A sample of 564 randomly selected participants was asked to complete a survey. The study presented empirical evidence that consumers’ level of ethical consumerism had a significant effect on the purchase intention for Fair Trade products, and strong purchase intention leads to positive effects on repurchase intention, brand loyalty, and brand commitment. This study adds to understanding of the emerging market to enhance further development of Fair Trade and to open up new possibilities in production of goods and services.