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화재 위험성을 중심으로 한 건축물 용도별 한국형인명안전기준의 개선안 도출에 관한 연구
구인혁 ( Koo¸ In-hyuk ),김혜원 ( Kim¸ Hye-won ),진승현 ( Jin¸ Seung-hyeon ),이병흔 ( Lee¸ Byeong-heun ),권영진 ( Kwon¸ Young-jin ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2
In Korea, the occurrence and risk of similar fires are high, so setting up fire prevention measures through fire case investigation is considered the most basic measure in securing human safety. Therefore, the purpose of this study is to research status and related regulations of Life Safety Codes for High Fire Risk Building Applications In the future, using this as basic data, it is considered that additional research is need to development Human Safety Standards in Korea.
Inhyuk Moon 동국대학교 정보융합기술원 2010 International Journal of Assistive Robotics and Sy Vol.11 No.2
This paper proposes a human interface based on facial direction estimated by visual observation of the face and electromyography (EMG) signals measured from neck muscles. The visual observation first extracts facial features such as eyes, pupils, eyebrows, and mouth, and then estimates the facial direction angle from the geometry relation of the pupils and the face. In large range of the facial direction angle, EMG signal is applied. Two observations are combined by a linear interpolation method, and the facial direction within the range of ±90 degree from the frontal direction of the face is estimated. In experiments, a camera panning control system is implemented, and the facial direction-based interface is applied to the control system. Experimental results show that the proposed interface is applicable to the human interface system for a serious paralyzed person.
Wearable EMG-based HCI for Assistive Robots
Inhyuk Moon,Jun-Uk Chu,Myung-Joon Lee,Mu-Seong Mun 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2006 International Journal of Assistive Robotics and Me Vol.7 No.3
Electromyogram (EMG) signal generated by voluntary contraction of muscles is often used in assitstive devices because of its distinct output characteristics compared to other bio-signals. This paper proposes a wearable EMG-based human-computer interface (HCI) for assistive robots such as a wheelchair robot and a myoelectric hand robot. The EMG signals for the HCI are measured from levator scapulae muscles concerned in shoulder elevation gestures and forearm muscles concerned in hand gestures. The experimental results show the proposed wearable EMG-based HCI is feasible for assistive robots.
Contact Resistance Properties of Electron-beam-cured Anisotropic Conductive Films
Inhyuk Lee,김재용 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.7
An anisotropic conductive film (ACF) is a thin adhesive epoxy layer that is widely used toconnect circuits in highly-integrated electronic devices. To bind two electric circuits, an ACFis pasted between the circuits and pressed with an optimum pressure so that the joints can beelectronically connected. For the curing of the resin, electron-beam (E-beam) irradiation is known tobe an environmentally friendly technique and exhibits many technical advantages over conventionalthermal curing in terms of low temperature and reduced curing time. In this method, the appliedpressure and electron-beam dose are critical parameters to maximize the conductivity without afailing of the connection between the circuits. For the minimization of the contact resistance aftercuring by using E-beam irradiation, curable epoxy resin was mixed with conductive particles madeof Ni/Au-plated polymer spheres with a mean particle size of 10 µm in a ratio of 5 : 1 by weight. The mixed resin was pasted on rigid boards having circuits of 100-µm pitch and was irradiated byusing an E-beam. The optimum dose for E-beam irradiation for a reasonable curing, the contactresistance values, and the reliability of the cured film were systematically investigated as functions ofE-beam dose, applied pressure and temperature. The lowest contact resistance values were obtainedwhen the specimens were irradiated by an 80-kGy E-beam under a constant pressure of 5 kgf/cm2. At this condition, the minimum contact resistance was 80 ± 0.015 m, which is significantly lowerthan the values obtained from commercial products, and the values were maintained within a 5%increase when the samples were kept at 100 C for 294 hours. Our results demonstrate that anE-beam irradiation technique can be applied for curing ACFs for commercial electronic devices.
자동차용 윤활유의 내구성평가에 따른 물성 및 기관성능에 관한 연구
Inhyuk Choi(최인혁),Gooksun Lee(이국선),Sungho Cho(조성호) 한국트라이볼로지학회 2008 한국트라이볼로지학회 학술대회 Vol.2008 No.6
Torsional Fatigue Life (TFL) tests were performed for five kinds of Overdrive Clutch Shafts. Four kinds of shaft samples were manufactured using different materials and heat treatments to evaluate cost and fatigue life. Commercial product was also studied for comparison. TFL tests were then conducted under the torque values 70, 55, 45, 40 ㎏.m and the cycle 10Hz for T-N curves. The results of TFL test indicated long fatigue life achievable in the specimen that has high surface hardness and small grain microstructure. Newly improved shaft showed 100-250% improvement in fatigue life compared to commercial shaft and its predicted durability exceeded cumulative damage from the transmission endurance test
Dysphagia Aortica Initially Misdiagnosed as Poststroke Dysphagia: A Case Report
InHyuk Suh,Sangpil Son,Jong Keun Kim,임종엽 대한연하장애학회 2022 대한연하장애학회지 Vol.12 No.2
Dysphagia aortica is a rare form of mechanical dysphagia characterized by extrinsic compression of the esophagus by the aorta. A 69-year-old male reported experiencing swallowing difficulties for five months, along with nausea, abdominal discomfort, weight loss, and severe reflux. Considering his age and a medical history of hypertension and stenosis of the cerebral artery, poststroke dysphagia was initially suspected. However, brain magnetic resonance imaging revealed no evidence of acute or subacute stroke. Further evaluation was achieved via enhanced chest computed tomography to locate the focus of the systemic inflammation. A thoracic aortic aneurysm about 8.7×5.0 cm in size, with signs of impending rupture, was observed. This case reinforces that a high possibility for dysphagia aortica should be considered under conditions of unclear etiology of dysphagia but the presence of associated symptoms, such as progressive intolerance to solids and ultimately to liquids, weight loss, and nausea.