http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Shin Dohyoung (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Kwon, Dohyoung,Ryu, Jaegeon,Shin, Myungsoo,Song, Gyujin,Hong, Dongki,Kim, Kwang S.,Park, Soojin Elsevier 2018 Journal of Power Sources Vol.374 No.-
<P><B>Abstract</B></P> <P>Dual-porous Ge nanostructures are synthesized <I>via</I> two straightforward steps. Compared with conventional approaches related to porous Ge materials, different types of pores can be readily generated by adjusting the relative ratio of the precursor amounts for GeO<SUB>2</SUB> and SiO<SUB>2</SUB>. Unlike using hard templates with different sizes for introducing secondary pores, this system makes a uniformly blended structure of porogen and active sites in the nanoscale range. When GeO<SUB>2</SUB> is subjected to zincothermic reduction, it is selectively converted to pure Ge still connected to unreacted SiO<SUB>2</SUB>. During the reduction process, primary pores (larger than 50 nm) are formed by eliminating zinc oxide by-products, while inactive SiO<SUB>2</SUB> with respect to zinc metal could contribute to retaining the overall structure. Finally, the HF treatment completely leaches remaining SiO<SUB>2</SUB> and formed secondary pores (micro/mesopores) to complete the dual-porous Ge structure. The resulting Ge structure is tested as an anode material for lithium-ion batteries. The Ge electrode exhibits an outstanding reversibility and an exceptional cycling stability corresponding to a capacity retention of 100% after 100 cycles at C/5 and of 94.4% after 300 cycles at C/2. Furthermore, multi-scale pores facilitate a facile Li-ion accessibility, resulting in an excellent rate capability delivering ∼740 mAh g<SUP>−1</SUP> at 5C.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A two-step method for tunable porous nanostructures of Ge is proposed. </LI> <LI> Selective Zn reduction and subsequent etching process provides dual-porous structures. </LI> <LI> Dual-porous Ge anodes have a structural integrity over the prolonged cycles. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
-
실시간 가시화 기술을 이용한 자기부상열차 품평 시스템의 개발 및 활용
차무현(Moohyun Cha),이재경(Jaekyung Lee),박성환(Seongwhan Park),박도영(Dohyoung Park),신병천(Byungchun Shin) (사)한국CDE학회 2010 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2010 No.1
Korea’s Urban Maglev Program is on the final stage of project which develops maglev transit system around Incheon International Airport in 2013. Because this project aims new railroad system, various requirements related to preliminary inspections in maglev system were raised steadily. In this study, a maglev design review system was developed using digital mock-up and simulation technology. We used open-source graphics engine to support rapid response to user requirements. Finally this system was used to position the path of demonstration line, select vehicle design and color, examine the station design and perform other evaluations related to harmony with the city environment. Also the VR simulator was developed to provide virtual riding experience in the maglev.
-
굴삭기 AR 시스템을 위한 이미지 프로세싱 기반 가상 이미지 중첩 기술
이강혁,박주환,강호준,신도형,Lee, Kanghyeok,Park, Joohwan,Kang, Hojun,Shin, Dohyoung 한국건설관리학회 2017 한국건설관리학회 논문집 Vol.18 No.2
Recently, with having a great interest of the general public for the AR (Augmented Reality) technology, there have been lots of study to improve efficiency of a construction equipment with applying the AR technology to a construction equipment. The clear extrinsic calibration is essential to applying AR technology at the construction site without any error which came from superimposition between 'Real world' and 'Virtual world'. However, on the construction site, the clear extrinsic calibration is not possible, because of lack of time and budget for the specific survey, also, the huge error of the outdoor tracking system such as gyro, GPS system and so on. In this study, we do research about seamless superposition with unclear extrinsic calibration and the image process method for making AR navigator operating in the excavator. Based on this study, we figure that we can fully develop the AR navigator for the excavator. Furthermore, thereby operating AR navigator at many construction sites, we expect that the efficiency of the excavator will be improved. In addition, we can develop AR navigator for not only a excavator but all about construction equipment. 최근 증강현실(AR)에 대한 대중적인 관심의 증가와 함께, 건설장비에 AR 기술을 도입하여 효율성을 높이려는 다수의 연구가 진행되고 있다. AR 기술을 도입하기 위해선 실세계와 카메라의 가상세계를 오차없이 연결할 수 있는 정교한 외부 표정이 필수적이다. 하지만 건설 현장에서는 한정된 비용과 시간의 문제와 현재 상용화되어있는 야외용 트래킹 시스템(경사계, GPS시스템 등의 오차로 인해, 정교한 외부 표정을 도입하는 것이 사실상 불가능하다. 본 연구에서는 굴삭기에 적용되는 AR 시스템인 AR 네비게이터를 위하여 정교하지 않은 외부 표정을 이용하더라도 이미지 프로세싱 기법을 통해 가상 이미지를 매끄럽게(Seamless) 중첩시키는 방법을 제안한다. 본 연구를 기반으로, 건설장비에 특화된 AR 네비게이터의 개발을 완료할 수 있을 것이라 생각이 된다. 또한 개발된 AR 네비게이터를 건설현장에 보급함으로써, 건설현장의 작업 효율성과 크게 향상시킬 것이라 기대하고, 추후 굴삭기 뿐 아니라 다른 건설장비에 적용될 수 있는 AR 기반 시스템이 갖춰질 것이라 생각한다.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
