http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Freestanding GaN 기판의 Ga-polar 면에 기계적 연마 방법을 적용한 Bow 제어 및 그 특성 연구
김진원,손호기,임태영,이미재,김진호,전대우,황종희,정정영,오해곤,김진훈,최영준,이혜용,윤대호,Gim, Jinwon,Son, Hoki,Lim, Tae-Young,Lee, Mijai,Kim, Jin-Ho,Jeon, Dae-Woo,Hwang, Jonghee,Jung, Jung-Young,Oh, Hae-Kon,Kim, Jin-Hun,Choi, YoungJun,Le 한국전기전자재료학회 2015 전기전자재료학회논문지 Vol.28 No.12
In this paper, we have studied the effect of mechanical polishing to Ga-polar face for reducing the wafer bowing and strain in free-standing GaN. After the mechanical polishing to Ga-polar face, the bowing of the free-standing GaN substrate significantly decreased with increasing the size of diamond slurry, and eventually changed the bowing direction from concave to convex. Furthermore, the full width at half maximum (FWHM) of high-resolution X-ray diffraction (HR-XRD) were decreased, especially the FWHM of (1 0 2) reflection for $1.0{\mu}m$ size of diamond slurry was significantly decreased from 630 to 203 arcsec. In the case, we confirmed that the compressive strain in Ga-polar face was fully released by Raman measurement.
N-polar면의 선택적 에칭 방법을 통한 Free-standing GaN 기판의 Bowing 제어
김진원,손호기,임태영,이미재,김진호,이영진,전대우,황종희,이혜용,윤대호,Gim, Jinwon,Son, Hoki,Lim, Tea-Young,Lee, Mijai,Kim, Jin-Ho,Lee, Young Jin,Jeon, Dae-Woo,Hwang, Jonghee,Lee, Hae-Yong,Yoon, Dae-Ho 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.1
In this paper, we report that selective etching on N-polar face by EC (electro-chemical)-etching effect on the reduction of bowing and strain of FS (free-standing)-GaN substrates. We applied the EC-etching to concave and convex type of FS-GaN substrates. After the EC-etching for FS-GaN, nano porous structure was formed on N-polar face of concave and convex type of FS-GaN. Consequently, the bowing in the convex type of FS-GaN substrate was decreased but the bowing in the concave type of FS-GaN substrate was increased. Furthermore, the FWHM (full width at half maximum) of (1 0 2) reflection for the convex type of FS-GaN was significantly decreased from 601 to 259 arcsec. In the case, we confirmed that the EC-etching method was very effective to reduce the bowing in the convex type of FS-GaN and the compressive stress in N-polar face of convex type of FS-GaN was fully released by Raman measurement.
김진원,이호성,Kim, Jinwon,Lee, Hosung 항공우주시스템공학회 2016 항공우주시스템공학회지 Vol.10 No.1
This study shows the statistical properties of the domestic composite material prepregs test result. During the last three years(2012.5~2015.6) the prepreg specimen tests have been performed by referring to NCAMP developed test procedure which was approved by FAA. The database of (1) Carbon Tape, (2) Glass Fabric, and (3) Carbon Fabric composite material prepregs' characteristics have been established for certified aircraft structures. This qualified materials can be used for aircraft structural design through proper material equivalency procedures.
김진원(Jinwon Kim),류동영(Dongyoung Rew) 한국항공우주연구원 2020 항공우주산업기술동향 Vol.18 No.1
월면 탐사를 위한 해외 우주 선진국들의 노력은 1960년대 이후로 꾸준히 전개되고 있다. 월면 탐사시 우주의 극한 상황을 고려하면 무인 탐사 로버의 체계적인 개발 및 운용은 매우 중요하다. 그간 로버를 달 탐사선에 탑재하고 전개하는 작업은 미국, 소련, 중국 등 3개국에서 성공적으로 실현되었으며, 본 연구에서는 향후 달탐사 로버를 성공적으로 월면에 내려놓기 위한 세 가지의 방식 (1) 측면 탑재 방식 (2) Roof-top 탑재 방식 (3) 승강 방식을 해외의 성공적인 로버 전개 사례연구를 포함하여 분석하였다. The efforts of leading space-exploration countries for lunar exploration have been continued since the 1960s. Considering the extreme conditions of the lunar exploration, the systematic development and operations of unmanned rovers are very important. Efforts to mount and deploy a rover on the lunar surface have been successfully performed in three countries such as USSR, US, and China. In this study, three lunar rover deployment methods (1) side unloading, (2) roof-top unloading, and (3) cargo elevation methods were investigated along with the case studies of previous successful rover deploying lunar missions.
평일 맞벌이 부부의 근로시간 및 가사노동시간, 시간부족감이 부부 중심 가족식사시간에 미치는 영향
김진원 ( Kim Jinwon ) 한국가족관계학회 2019 한국가족관계학회지 Vol.23 No.4
Objective: This study aimed at examining the pathway for family mealtime as a sharing time with a couple. Concretely, it is the effects of working hours, housework time, and subjective time pressure on family mealtime for dual-income couples in weekday. Method: The analysis data of this study are Time Use Survey 2014 of Statistics Korea. The study sample consisted of 2,111 cases through matching husbands and wives. The analyses included descriptive statistics, correlation coefficient, and structural equation modeling. Results: Major findings were as follows: First, when it comes to family mealtime during weekday, husbands’ working hours and subjective time pressure were negative association. In addition, husbands' working hours were related to family mealtime via subjective time pressure as mediator. Second, in contrast to husbands, wives' working hours and subjective subjective time pressure were not significantly related with time for family meal. subjective time pressure were not significantly related with time for family meal. Third, housework time excluding the domain of food for husbands was positively related to family mealtime. Meanwhile, in case of wives, housework time excluding the domain of food was negatively concerned with family mealtime. Fourth, housework time of the domain of food for wives was positively associated with family mealtime. Conclusions: Major results implied that there is the difference between husbands and wives in the pathway from working hours and housework time to family mealtime mediated by subjective time pressure in dual-income families during weekday.
효과적인 남북한 재난대응 협력을 위한 법제도적 문제 고찰
김진원(Jinwon Kim),정한범(Hanbeom Jeong) 경북대학교 사회과학기초자료연구소 2018 연구방법논총 Vol.3 No.1
본 연구는 효과적인 남북한 재난대응 협력을 위한 법제도적 문제를 살펴보기 위한 연구이다. 연구에서는 과거 주요한 남북 재난대응 협력사례를 살펴보고, 북한지역에서의 재난 대응을 위한 현재 한국의 법적, 제도적 문제를 고찰하고 이를 개선하는 방안을 제시 할 것이다. 남북한 간의 정치적, 군사적 이슈로 인한 마찰과 교류의 단절은 북한지역에서의 재난 발생 시 효율적인 대응과 지원을 어렵게 한다. 하지만 재난대응과 인도주의적 지원은 시의적절하고 충분해야만 그 목적을 달성할 수 있는 만큼, 효율적이고도 신속한 개입이 필요하다. 이를 위하여 북한에서 발생한 재난의 종류에 따른 접경지역 지방자치단체와 중앙정부의 행동 규범이 필요하다. 또한 인도주의적 지원 시 지원물품 품목 및 지원수단 등이 적혀있는 매뉴얼이 필요하며 이 매뉴얼의 작동을 위한 법적제도의 정비가 필요할 것이다. The purpose of this study is to examine legal and institutional issues for effective cooperation between South and North Korea in disaster response. In this study, we will examine the major cases of between South and North Korea disaster response cooperation in the past, and review the current legal and institutional issues for disaster response in North Korea and suggest ways to improve them. Disruption of friction and exchange caused by political and military issues between North and South Korea makes it difficult to effectively respond to and support North Korea in the event of a disaster. However, disaster response and humanitarian assistance need to be efficient and swift as long as they are timely and sufficient to achieve their objectives. To this end, it is necessary to adopt the code of conduct of the local governments and the central government according to the kinds of disasters in North Korea. In addition, manuals that describe the items to be supported and the means of support for humanitarian assistance are needed, and the legal system for the operation of this manual will need to be improved.
김진원(Jinwon Kim),강동우(Dongwoo Kang),이석태(Seoktae Lee),정환호(Hwanho Jeong),김지만(Jiman Kim),하성기(Sunggi Ha),배경호(Kyungho Bae) 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.12
본 논문에서는 2차전지를 동력원으로 하는 7kW AC 모터를 적용한 7인승 무인지상차량의 추진시스템과 주행성능에 대하여 기술하였다. 무인지상차량은 유원지, 과학관, 놀이공원 등에 무인셔틀서비스를 제공하는 용도로 개발되고 있다. 시제품의 무게는 약 1ton, 크기는 약 4m(전장)x2m(전폭)x2.3m(전고)이다. 시제품은 2차전지로 16.2kW의 전력을 공급할 수 있는 밀폐형 납산배터리(Sealed Lead-Acid Battery)를 사용했다. 주행시험 결과, 0~15km/h로 속도제어 가능함을 알 수 있었다. This paper deals with the propulsion system and the driving performance of 7 seater UGV(Unmanned Ground Vehicle) using 7kW AC motor which is powered by secondary battery. The UGV has been developing to provide unmanned shuttle service for visitor at the place such as pleasure ground or science museum or amusement park. The size of prototype is about 4m(L)x2m(W)x2.3m(H) and the weight is about 1ton. The prototype uses SLA battery(Sealed Lead-Acid battery) for secondary battery that can supply 16.2kW electric power. Results of driving test, it is noticed that the prototype can be controlled with speed of 0~15km/h.