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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.
요양병원환자에게 적용한 김치유산균 함유 동치미즙의 구강간호효과
이승아(Lee, Seung-Ah),이동숙(Lee, Dongsuk) 한국간호과학회 2017 Journal of Korean Academy of Nursing Vol.47 No.4
Purpose: The aim of this study was to identify the effect of Dongchimi juice containing kimchi Lactobacillus as an oral hygiene agent and to compare it with that of chlorhexidine solution (0.12% dilution). Methods: This study employed a pretest-posttest experimental design in which a single group of patients was exposed to two different treatments over a period of time. The study included 32 patients hospitalized at a longterm care hospital in Korea. Data were collected between August 12, 2016 and September 28, 2016. The patients first used chlorhexidine solution as an oral care agent for 1 week. After an interval of 2 weeks, they used Dongchimi juice for 1 week. Each agent was applied 2 times a day depending on the protocol. The oral status of the patients was measured using Beck’s Oral Exam Guide (OEG) scores. The number of pathogens in the oral cavity was counted by culture, and the patients’ subjective satisfaction score for each oral agent was measured using a visual analogue scale. T-test and Mann-Whitney test were performed to identify significant differences between Dongchimi juice and chlorhexidine solution by using PASW Statistics for Windows, Version 18.0 (SPSS Inc., Chicago, IL, USA). Results: The OEG score was not statistically different with the use of chlorhexidine solution and Dongchimi juice. However, decreasing number of pathogens and the subjective satisfaction score were higher with Dongchimi juice than with the chlorhexidine solution. Conclusion: These findings support the use of Dongchimi juice containing kimchi Lactobacillus as an oral hygiene agent for Korean patients.