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( Hyojeong Lee ),( Heeran Lee ),( Ran-i Eom ),( Yejin Lee ) 한국패션비즈니스학회 2016 패션 비즈니스 Vol.20 No.3
The objective of this study was to perform 3D solid modeling from 3D scanned surface images of cotton and silk in order to calculate the thermal heat transfer responses using numerical simulations. Continuing from the previous methodology, which provided 3D surface data for a fabric through optical measurements of the fabric microstructure, a simplified 3D solid model, containing a defined unit cell, pattern unit and fabric structure, was prepared. The loft method was used for 3D solid-model generation, and heat transfer calculations, made for the fabric, were then carried out using the 3D solid model. As a result, comprehensive protocols for 3D solid-model generation were established based on the optical measurements of real fabric samples. This method provides an effective means of using 3D information for building 3D models of actual fabrics and applying the model in numerical simulations. The developed process can be used as the basis for other analogous research areas to investigate the physical characteristics of any fabrics.
Genetic Influences on Hallux Valgus in Koreans: The Healthy Twin Study
Lee, Chang-Hyung,Lee, Sooji,Kang, HyoJeong,Jung, Da-Eun,Song, Yun-Mi,Lee, Kayoung,Lee, Kyungtai,Hwang, JiHye,Sung, Joohon Cambridge University Press 2014 TWIN RESEARCH AND HUMAN GENETICS - Vol.17 No.2
<P>Hallux valgus (HV) is a common foot deformity of multifactorial etiology, but knowledge about the relative importance of genetics and environments on HV has been limited. In order to estimate genetic influences on HV, 1,265 adults, including 175 monozygotic twin (MZ) pairs, 31 dizygotic twin (DZ) pairs, and 853 first-degree singleton family members of the twins were included from the Healthy Twin study, a population-based twin-family cohort in Korea. All participants underwent foot examination and weight-bearing radiographic assessment (anterior-posterior and lateral) in addition to a general health survey. Of the subjects, 208 (16.4%) were classified as HV (as HV angle >20°). The genetic influence on HV was estimated to be substantial; the heritability of HV was 0.51 (95% CI 0.42-0.59) and the heritability of HV angle was 0.47 (0.38-0.56), while contributions from shared environmental effects were negligible. These findings suggest that genetic factors play an important role in determining HV deformity.</P>
탄력밴드 운동프로그램이 대학생의 근력과 운동수행능력에 미치는 영향
이효정 ( Hyojeong Lee ),박수정 ( Sujeong Park ),신희문 ( Heemun Shin ),이다운 ( Daun Lee ),이정아 ( Jungah Lee ),정의경 ( Uigyeong Jeong ) 대한통합의학회 2016 대한통합의학회지 Vol.4 No.2
Purpose : The purpose of this study was to evaluate the effectiveness and analyse the change on muscular strength and exercise performance ability of university students participating in leisure sports by elastic-band exercise program. Method : The subjects(N=22) participating in leisure sports are recruited from K university located in Chungbuk. The subjects which are divided to 2 groups as experimental group(N=11) conducted elastic-band exercise program and control group(N=11) conducted stretching program. The muscular strength and exercise performance ability were measured before and after intervention. Result : There were no significant differences(p>.05) in sex, age, height, and weight among subjects. In the measurement of muscular strength, a significant difference(p<.05) was observed in each group, and there was also significant difference(p<.05) between two groups except gastrocnemius(p>.05). A significant difference(p<.05) in muscular volume was observed in each group, and there was also significant difference(p<.05) between two groups apart from gastrocnemius(p>.05). In exercise performance ability, there was significant difference(p<.05) in sergent jump and side-step in each group, and there was a significant difference(p<.05) between two groups in sergent jump, but there was no significant difference(p>0.5) in side-step. Conclusion : Based on this study, through a variety of age and various intervention period to apply more subjects conducting elastic-band exercise program should continue.
이정호(Jeongho Lee),이성환(Seongwhan Lee),이정규(JungKyu Lee),이효정(Hyojeong Lee),신재혁(Jehyuck Shin),정선영(Seonyeong Jeong),오영석(YoungSeok Oh),진호(Ho Jin) 한국항공우주학회 2016 韓國航空宇宙學會誌 Vol.44 No.4
SIGMA(Scientific cubesat with Instruments for Global Magnetic field and rAdiation) 큐브위성은 근 지구 자기장 세기와 우주 방사선량 측정을 위해 경희대학교에서 개발한 초소형인공위성이다. 우주 임무 수행을 위해 비행 소프트웨어는 위성을 제어하고 데이터를 처리하는 중요한 역할을 담당한다. 본 연구에서는 SIGMA 큐브위성의 임무 수행을 위해 비행소프트웨어를 구현한 것으로서 일반적으로 임베디드 시스템에서 사용하는 실시간 운영체제를 사용하지 않고 단일 프로세스 내에서 모든 태스크를 처리하도록 구현하였다. 이는 SIGMA 큐브위성의 임무 수행 절차와 시스템 제어 방법을 고려한 것으로서 소프트웨어의 오버헤드(overhead)를 낮추고 임무 수행에 집중할 수 있는 효과적인 방법이다. SIGMA(Scientific cubesat with Instruments for Global Magnetic field and rAdiation) CubeSat has been developed for magnetic field measurement of the Earth and space radiation measurement at Kyung Hee university. The flight software plays important roles in controlling the satellite and processing the data in the space mission. In this paper, the Flight Software has been implemented to process all the tasks in the one thread without RTOS(Real Time Operating System). This is an effective mothed not only to concentrate the space mission of CubeSat but also to reduce the overhead of the Flight Software by considering the mission perform procedures and the system control methods.
KHUSAT-03 (SIGMA)의 개발 및 환경시험 결과
이성환(Seongwhan Lee),이정규(Jung-Kyu Lee),이효정(Hyojeong Lee),이정호(Jeongho Lee),신재혁(Jehuyck Shin),정선영(Seonyoung Jeong),진호(Ho Jin),남욱원(Uk-Won Nam),김효민(Hyomin Kim),Regina Lee,Marc R. Lessard 한국항공우주학회 2016 한국항공우주학회 학술발표회 논문집 Vol.2016 No.4
경희대학교는 과학임무를 위해 Tissue Equivalent Proportional Counter (TEPC)와 fluxgate MAGnetometer (MAG)를 탑재한 초소형인공위성 Scientific cubesat with Instruments for Global magnetic field and rAidation (SIGMA)를 개발하였다. SIGMA는 3U 크기로 개발된 2.9 ㎏의 무게를 갖는 큐브위성이다. 주탑재체인 TEPC는 Linear Energy Transfer (LET) 스펙트럼을 측정하고 우주환경에서의 등가선량을 도출한다. 부탑재체인 MAG는 큐브위성에 적합하도록 소형화하여 설계하였으며 0.1 nT의 분해능과 ±52000 nT의 측정범위를 갖는다. 현재 SIGMA는 비행모델 개발 및 우주환경시험과 지상국 개발을 완료하여 발사를 위한 모든 준비를 마쳤다. 본 논문에서는 SIGMA의 시스템 개발과 우주환경시험 결과에 대하여 논의하고자 한다. Kyung Hee University (KHU) has been develop a CubeSat for the space science mission called Scientific cubesat with Instrument for Global Magnetic field and rAdiation (SIGMA), which installed Tissue Equivalent Proportional Counter (TEPC) and a magnetometer. SIGMA has a 3U CubeSat, and the weight is about 2.9 ㎏. The primary payload, TEPC, measure the Linear Energy Transfer (LET) spectrum and calculate the equivalent dose for the complicated radiation field in the space. The secondary payload, magnetometer, measures the global magnetic fields. It has 0.1 nT resolution in the dynamic range of ±52000 nT. In this paper, we introduce the system design and the environment test of the SIGMA CubeSat mission.