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PenDraw : 펜을 이용한 도표 / 도형 입력 시스템
윤찬구(Chan Goo Yoon),조성배(Sung-Bae Cho),김진형(Jin H. Kim) 한국정보과학회 1992 한국정보과학회 학술발표논문집 Vol.19 No.1
최근들어 펜을 입력 장치로 하는 사용자 응용 분야에 대한 연구가 활발히 진행되고 있다. 본 논문에서는 펜을 이용한 온라인 응용 분야로서 도표 및 도형 입력 시스템, PenDraw를 설계하고 구현한다. 시스템은 사용자에게 보다 신뢰성 있는, 다양한 기능을 제공하기 위하여 도표 형식과 도형 형식을 서로 다른 모드에서 입력하도록 하였으며, 편리한 교정 환경을 제공하기 위하여 2차원 제스춰를 사용한다. PenDraw의 성능을 알아보기 위하여 전체 744개의 심불로 구성된 10종의 손으로 그린 도형들로 실험한 결과 93%의 인식률을 얻었는데, 이와같은 사실은 펜을 기반으로하는 인터페이스를 사용하는것이 도표나 도형을 작성하는데 매우 자연스러울 뿐만 아니라 효과적임을 입증하는 것이다.
원심모형실험을 이용한 해상풍력발전기 전문설치선의 스퍼드캔 제팅 시스템 성능 분석
조철희(Chul H. Jo),김도엽(Do-Youb Kim),김명주(Myeong-Joo Kim),구찬회(Chan-Hoe Goo) 한국신재생에너지학회 2016 신재생에너지 Vol.12 No.3
Wind energy is an important alternative clean energy source that will contribute to solving the renewable energy needs. In particular, higher wind speeds are available offshore compared to that on land. Therefore the offshore wind power generator can be adopted to generate much power. The wind turbine installation vessel (WTIV) is a new type of mobile jack-up vessel that is designed for the requirements of the offshore wind power industry. The elevating process for the jack-up legs of WTIV can be quite difficult because of the high extraction resistance caused by clay. In soft clay, a high suction force can develope around the spudcan attached to the end of the jack-up legs. Therefore, a jetting system is required to break the suction to pull out the legs. It is important to design a jetting system with an optimized piping and nozzle arrangement to allow easy operation. To evaluate the jetting system performance, it is essential that the model test be performed within the soil base. Spudcan jetting tests were performed in a geotechnical centrifuge. This study introduces the design of the jetting system considering the soft foundation and the centrifuge model test to verify the performance of the spudcan jetting system.
<i>Ex Vivo</i> Characteristics of Human Amniotic Membrane-Derived Stem Cells
Kim, Jiyoung,Kang, Hyun Mi,Kim, Haekwon,Kim, Mee Ran,Kwon, Hyuck Chan,Gye, Myung Chan,Kang, Sung Goo,Yang, H. Seung,You, Juice Mary Ann Liebert 2007 Cloning & stem cells Vol.9 No.4
<P>Cells were isolated from four human amniotic membranes, and their biological characteristics analyzed during ex vivo expansion. Morphologically homogenous populations of fibroblast-like cells were obtained from the second or third passage. Under the appropriate culture conditions, these human amniotic membrane-derived mesenchymal cells (HAM) were shown to differentiate into adipocytes, osteocytes, chondrocytes and neuronal cells, as visualized by Oil Red O, von Kossa, alcian blue, anti-Neu N, and anti-Gal C antibody staining, respectively. Immunophenotype analysis of HAM cells revealed the presence of antigens for SSEA-3, SSEA-4, collagen type-I, -II, -III, -IV, -XII, fibronectin, alpha-SMA, vimentin, desmin, cytokeratin18 (CK18), HCAM-1, fibroblast surface protein, and human leukocyte antigen (HLA) ABC. ICAM-1 protein was weakly detectable, and proteins of TRA-1-60, VCAM-1, von Willebrand factor, PECAM-1, and HLA DR were not detected. HAM cells reached senescence after 14.5+/-0.9 passages, over a period of 146.8+/-8.9 days, and underwent an average of 36.9 4.7 population doublings. RT-PCR analysis showed that all four HAM cell lines consistently expressed genes of Oct-4, Rex-1, SCF, NCAM, nestin, BMP-4, GATA-4, HNF-4alpha, vimentin, and CK18, regardless of the passage number. The genes of Brachyury, FGF-5, Pax-6, and BMP2 were never expressed. Strikingly, alpha-fetoprotein (alphaFP), HLA ABC, and HLA DR genes were expressed in an earlier passage but not expressed in later passages. Telomerase activity of two HAM lines was discernable upon the third passage. These observations strongly suggest that HAM might be immune-privileged and, thus, advantageous as therapeutic cells.</P>
Patil, Umakant M.,Sohn, Ji Soo,Kulkarni, Sachin B.,Lee, Su Chan,Park, Hyung Goo,Gurav, Kishor V.,Kim, J.H.,Jun, Seong Chan American Chemical Society 2014 ACS APPLIED MATERIALS & INTERFACES Vol.6 No.4
<P>Chemical growth of mixed cobalt–nickel hydroxides (Co<SUB><I>x</I></SUB>Ni<SUB>1–<I>x</I></SUB>(OH)<SUB>2</SUB>), decorated on graphene foam (GF) with desirable three-dimensional (3D) interconnected porous structure as electrode and its potential energy storage application is discussed. The nanostructured Co<SUB><I>x</I></SUB>Ni<SUB>1–<I>x</I></SUB>(OH)<SUB>2</SUB> films with different Ni:Co (<I>x</I>) compositions on GF are prepared by using the chemical bath deposition (CBD) method. The structural studies (X-ray diffraction and X-ray photoelectron spectroscopy) of electrodes confirm crystalline nature of Co<SUB><I>x</I></SUB>Ni<SUB>1–<I>x</I></SUB>(OH)<SUB>2</SUB>/GF and crystal structure consists of Ni(OH)<SUB>2</SUB> and Co(OH)<SUB>2</SUB>. The morphological properties reveal that nanorods of Co(OH)<SUB>2</SUB> reduce in size with increases in nickel content and are converted into Ni(OH)<SUB>2</SUB> nanoparticles. The electrochemical performance reveals that the Co<SUB>0.66</SUB>Ni<SUB>0.33</SUB>(OH)<SUB>2</SUB>/GF electrode has maximum specific capacitance of ∼1847 F g<SUP>–1</SUP> in 1 M KOH within a potential window 0 to 0.5 V vs Ag/AgCl at a discharge current density of 5 A g<SUP>–1</SUP>. The superior pseudoelectrochemical properties of cobalt and nickel are combined and synergistically reinforced with high surface area offered by a conducting, porous 3D graphene framework, which stimulates effective utilization of redox characteristics and communally improves electrochemical performance with charge transport and storage.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2014/aamick.2014.6.issue-4/am404863z/production/images/medium/am-2013-04863z_0010.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am404863z'>ACS Electronic Supporting Info</A></P>