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웨어러블 컴퓨터 환경의 개인 네비게이션 수행에 다중양식 단서가 미치는 영향
전하영(Ha?Young Jeon),채행석(Haeng?Suk Chae),홍지영(Ji?Young Hong),한광희(Kwang?Hee Han) 대한인간공학회 2007 大韓人間工學會誌 Vol.26 No.4
Navigation system or way finding in Wearable computer help disabled and impaired persons and it is impossible to be safe and efficient for drivers as well as pedestrian. Wearable computing situation must be multi-tasking simultaneously and users need minimal attention. In this paper, we used virtual environment as real way-finding similarly. The direction cues of navigation system are investigated as visual only, visual & auditory, and visual & speech. In the paper, the trial demonstrates the difference of performance in detection of directing and performance of motor and subjective satisfaction of user.
Fasting Urine을 사용한 Microalbumin의 참고치에 관한 연구
김지영 ( Ji Young Kim ),진광호 ( Kwang Ho Jin ),배애영 ( Ae Young Bae ),김예나 ( Ye Na Kim ),서상원 ( Sang Won Seo ),이나리 ( Na Ree Lee ),전하영 ( Ha Young Jeon ),신숙희 ( Sook Hee Shin ) 대한임상검사과학회 2006 대한임상검사과학회지(KJCLS) Vol.38 No.3
Microalbuminuria is most frequently caused by kidney damage from diabetes. Moreover, many other conditions can lead to kidney damage, such as high blood pressure, heart failure, cirrhosis, or systemic lupus erythematosus (SLE). The measurement of the microalbumin in urine may be useful for the early diagnosis or as a predictor of nephropathy in diabetes. The most common method for getting a quantitative measurement of urinary protein relies on a 24-hour urine collection. The result of this method is accurate. But 24hr urine collection is difficult to obtain and variations in volume are frequent. Also the patients complain about urine collection. We tried to measure reference values for microalbumin using fasting urine and compare them with the albumin/creatinine ratio using 24hr urine. The concentrations of microalbumin in fasting urine and 24hr urine were 7.1±3.8 mg/L, 5.7±2.9 mg/L (r=0.61, p=0.27), respectively. The albumin/creatinine ratios using fasting urine and 24hr urine were 8.7±4.2 g/mg, 8.7±4.0 g/mg (r=0.76, p=0.88), respectively. This study indicated that the measurement of microalbumin in fasting urine was an easy and simple method for early diagnosis or to predict nephropathy in diabetes. Thus, setting up the reference value using fasting urine may be useful in the screening test for the diabetic nephropathy patients instead of using the 24hr albumin excretion rate (AER).
팔 흔들기가 건강한 성인의 오르막길 보행에 미치는 영향
노동원,전하영,양세정,이현화,손성,차유리,Noh, Dong-won,Jeon, Ha-young,Yang, Se-jeong,Lee, Hyeon-hwa,Son, Seong,Cha, Yu-ri 대한물리치료과학회 2019 대한물리치료과학회지 Vol.26 No.2
Background: The purpose of present study is to effect of arm swing on uphill road gait in healthy adults. Design: Cross-sectional study. Methods: This study was Participated in 15 healthy subjects. The subjects were allowed to walk uphill, about 10m from the line drawn on the floor. The subject stood at the starting line and started by pressing the start button with the signal "start", and I pressed Stop at the last incoming point. Walking with and without arm swing was measured twice in random draws. Results: Walking path with arm swing showed good results in walking path duration, cadence, speed, stride length, and Gait cycle duration rather than uphill walk without arm swing. Conclusion: As a results of this study, The arm swing is important in getting uphill.
프리스트레스 손실량을 고려한 270,000kL급 LNG 저장탱크 외조의 비산물체 속도에 따른 충돌 거동 해석
이상원(Sang-Won Lee),전하영(Ha-Young Jun),김장호(Jang-Ho Jay Kim),김준휘(Jun-Hwi Kim),이강원(Kang-Won Lee) 한국가스학회 2014 한국가스학회지 Vol.18 No.1
LNG 저장탱크의 외조는 콘크리트 부재로 수직 방향 및 원환 방향 프리스트레싱 벽체 구조인데, 저장탱크의 대형화가 이루어짐에 따라 프리스트레싱 구간이 길어지고 결과적으로 프리스트레스 손실량이 증가하고 있다. 본 연구는 주요 사회기반시설구조물의 하나인 LNG 저장탱크에 비행체 충돌과 같은 사고가 발생하였을 때 안전성 향상을 위하여 충돌 저항 성능에 대한 분석연구를 수행하였다. 해석은 유한요소해석 프로그램인 LS-DYNA를 사용하여 270,000kL급 LNG 저장탱크 외조의 비산물체 충돌에 대한 거동을 평가해보고자 하며, 해석 시 LNG 저장탱크의 대형화로 인한 PS 텐던의 길이증가에 따른 프리스트레스 손실 또한 고려될 것이다. 또한 프리스트레스 손실의 적용 유무에 따른 비산 물체 충돌에 대한 PSC 구조물의 거동 비교를 통해 구조물의 안전성 및 사용성을 평가해보고자 한다. 이 연구의 결과를 통해 프리스트레스 손실량의 적용에 따른 구조물의 거동 변화를 확인하고, 설계시 안전성 기준 및 검토의 보조자료로 활용할 수 있도록 하고자 한다. LNG storage outer tank is a vertically and horizontally prestressed concrete wall structure. Therefore, when the storage tanks become larger, prestressing tendons become longer and eventually the prestressing loss becomes larger. Also, recently, bomb terrors and accidental crashes have occurred frequently on important infrastructures. Therefore, LNG storage tanks are also exposed to these dangerous scenarios, where they need to be evaluated and protected from these threats. Therefore, in this study, the behavior of 270,000 kL LNG storage outer tank impacted by a flying object is evaluated using implicit FEM code, LS-DYNA. In the analysis, the prestress loss due to the increased length of prestressing tendons from enlargement of outer tank is considered. A comparison study between the LNG tanks with and without prestress loss is performed to investigate the impact behavior and the effect of prestressing force change on the safety and serviceability prestressed concrete containment.
경과년수 변화에 따른 사회복지시설의 주요 손상과 원인 분석에 관한 연구
강철 ( Kang Cheol ),전하영 ( Jeon Ha Young ),김민수 ( Kim Min Su ),김동희 ( Kim Dong Hee ),김종덕 ( Kim Jong Duck ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
As the aging of the facility increases, the safety, durability, and serviceability that were originally possessed by the natural aging deteriorate. Accordingly, periodic safety inspections, repair and strengthening are the basic procedures for th maintenances of facilities. However, except for some facilities that are prescribed in the law, the safety and maintenance of facilities are still insufficient. Especially, social welfare facilities, which occupy the majority of small-scale vulnerable facilities, have a high proportion of old facilities with many years of age, leading to major damages that affect the durability and safety of facilities. The purpose of this paper is to identify the main damage and its causes according to the change of the years of social welfare facilities, and to use it as a basic data to suggest reasonable maintenance methods.