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권현준(H. J. Kwon),권영하(Y. H. Kwon),정철곤(C. G. Jeong) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
The products designed by human sensibility and ergonomics are given good impression. Especially the touch feeling on the human skin is very useful sensibility for quality of products. Elasticity and viscosity of human skin is very important element in product design based on ergonomics. In this paper, we describe a sophisticated method for measurement of dynamic viscoelasticity characteristics of human skin. For this measurement, we developed a measurement system assembled with load cell, actuator, amplifier and data acquisition system. The MATLAB™ is used to analyze the data and fit a approximation curves.
Ti-39Nb-6Zr 합금의 시효처리를 통한 미세조직 및 기계적 특성 제어
권현준 ( Hyun Jun Kwon ),임가람 ( Ka Ram Lim ),이용태 ( Yong Tae Lee ),이동근 ( Dong Geun Lee ),이준희 ( Jun Hee Lee ),김승언 ( Seung Eon Kim ) 대한금속재료학회(구 대한금속학회) 2016 대한금속·재료학회지 Vol.54 No.12
The aim of this study is to optimize the microstructure and mechanical properties of Ti-39Nb-6Zr (TNZ40) for bio-implant applications. TNZ40 was designed to have a low elastic modulus (~40 GPa) and good biocompatibility. However, the alloy shows relatively low strength compared to other titanium alloys for bio-implant. In the present study, we tried to obtain the proper combination of elastic modulus and strength by tailoring the direct aging conditions after severe plastic deformation. The mechanical properties are closely linked to characteristics including the distribution and volume fraction of precipitates. †(Received November 6, 2015; Accepted May 19, 2016)
권현준(Hyun-Jun Kwon) 융복합지식학회 2018 융복합지식학회논문지 Vol.6 No.2
최근 들어 미디어 경영학의 독립과 관련된 움직임이 제시되고 있고, 미디어 경영학을 독자적인 분야로 간주하고 향후 이 분야의 진행 방향을 예의주시할 필요성이 제기된다고 본다. 미디어 경영학의 발달은 학문 자체의 동력에 근거했다기보다는 산업 분야의 확대에 기반을 두고 있다. 미디어 경영학은 20세기 중반 들어 미디어 관련 기업들의 수와 규모가 증대하면서 관심을 받기 시작했다. 본 연구에서는 미디어 경영학 연구의 현황을 분석하고 향후 방향을 검토하는 것을 목적으로 설정하였다. 이를 위해, 미디어 경영학의 현황을 탐색적 수준에서 Porter의 모형과 자원준거관점(RBV)을 활용하여 분석하였다. Recently, movements related to independence of media management have been proposed, and media management needs to be considered an independent field and the progress of this field needs to be closely watched. The development of media management is based on the expansion of industry, as is the case in the field of communication rather than on the basis of the academic engine itself. Media management began to draw attention in the mid-20th century as the number and scale of media-related enterprises grew. The purpose of this study was to analyze the status of media management research and review future directions. To this end, the status of media management was analyzed using the model of Porter and the Resource Dependent Perspective (RBV) at the Exploration level.
피부 in-vivo 마찰력 측정과 관능 평가를 통한 화장품 펴발림성 연구
권현준 ( H J Kwon ),권영하 ( Yh Kwon ) 한국감성과학회 2004 추계학술대회 Vol.2004 No.-
The frictional coefficients have been used to evaluate skin care and cosmetic products which aim at conferring smoothness to skin. Cosmetic products are thought to perform their function by depositing sufficient amounts of desirable ingredients leading to perceptible change in adhesion and frictional coefficients. ,We design the frictional coefficients measurement system which is assembled with multi-component load cell and linear motor. The multi-component load cell measures simultaneously the normal load(Fz), and the frictional forces (Fx, Fy) with strain gages while contactor is sliced on the cosmetic applied skin of arm fixed with the linear motor. Capacity and accuracy of load cell are less than 5 N and 0. 1%. In vivo frictional coefficients of skin of arm is varied from 0. 177 to 1. 327 dependent on the cosmetic products, normal load, sliding speed and surface condition of contactor.
권현준(Hyeon-Jun Kwon),채용웅(Yong-Woong Chai) 한국전자통신학회 2021 한국전자통신학회 논문지 Vol.16 No.3
본 연구를 통해 설계된 Portable ESS를 위한 4kW급 인버터는 휴대용에 걸맞게 수동소자(캐패시터, 인덕터등)의 부피를 줄여 경량화 및 높은 전력밀도를 달성하고, MOSFET의 낮은 온저항을 통해 MOSFET의 열손실을 최소화하여 높은 효율을 달성할 수 있도록 했다. 또한, 높은 품질의 에너지 전달을 위해 현행 한전 영업업무처리지침기준에 따라 낮은 THDV를 가지도록 설계되어 왜곡이 낮은 정현파가 출력되도록 설계되었다. The 4kW class inverter for portable ESS designed through this study achieves lightweight and high power density by reducing the volume of passive devices (capacitors, inductors, etc.) suitable for portable use, and minimizes heat loss of the MOSFET through the low on resistance of the MOSFET. So that high efficiency can be achieved. In addition, in order to deliver high quality energy, it is designed to have a low THDV in accordance with the current KEPCO business handling guidelines, and is designed to output a sine wave with low distortion.
A Touchpad for Force and Location Sensing
Dong-Ki Kim,김종호,권현준,Young-Ha, Kwon 한국전자통신연구원 2010 ETRI Journal Vol.32 No.5
This paper presents the design and fabrication model of a touchpad based on a contact-resistance-type force sensor. The touchpad works as a touch input device, which can sense contact location and contact force simultaneously. The touchpad is 40 mm wide and 40 mm long. The touchpad is fabricated by using a simple screen printing technique. The contact location is evaluated by the calibration setup, which has a load cell and three-axis stages. The location error is approximately 4 mm with respect to x-axis and y-axis directions. The force response of the fabricated touchpad is obtained at three points by loading and unloading of the probe. The touchpad can detect loads from 0 N to 2 N. The touchpad shows a hysteresis error rate of about 11% and uniformity error rate of about 3%.