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무도(태권도,유도) 경기화 과정 분석을 통한 합기도경기의 활성화 방안
강두식 ( Doo Sick Kang ),김의영 ( Eui Young Kim ),최종균 ( Jong Kyun Choi ) 대한무도학회 2012 대한무도학회지 Vol.14 No.2
본 연구는 무도스포츠로서 인정받고 있는 태권도와 유도의 경기규정 변천과정 및 변천배경을 분석하여 합기도의 경기화를 통한 활성화 방안을 정립하고, 향후 합기도의 정체성 확립과 한국합기도가 국제화된 무도스포츠로서 성장하는데 필요한 기초연구이다. 이를 위해 선행연구 된 태권도경기와 유도 경기의 경기규칙 변천과정과 경기규칙 변천의 배경을 분석하여 다음과 같은 합기도 경기의 활성화 방안을 도출 하였다. 첫째, 합기도 기술체계 및 주변무도와 차별화 할 수 있는 경기규정으로 통합되어야 한다. 둘째, 심판의 선발, 교육, 운영에 있어서 공정하고 혁신적으로 이루어져야 한다. 셋째, 대한체육회 정식종목 가입과 전통무예진흥법과 같은 행정적 지원을 받아야 하며, 이후 이를 바탕으로 합기도 경기의 국제화를 추진해야 한다. 그러나 합기도가 경기화에 정착하고 국제스포츠로서 성장하기 위해서는 스포츠화 되어가는 과정에서 무도성을 잃지 않고, 합기도 본연의 기술체계에 부합할 수 있는 경기규칙 및 통합방안에 대한 연구가 계속적으로 이루어져야 한다. 또한 합기도가 올바른 방법으로 개선되고, 학문적 토대가 정립될 수 있도록 학술대회 및 연구가 꾸준히 이루어져야 한다. The purpose of this study was to examine the transition of the competition rules of taekwondo and judo, which were widely recognized as martial arts sports, in an attempt to seek ways of bolstering hapkido competition by applying the competition rules of the two sporting events. It`s ultimately meant to be of some use for the identity building of hapkido, and this study is expected to provide some core materials for research on hapkido competition, and is greatly significant in that it offers crucial basic information on the development of hapkido competition. Relevant literature and Internet materials were analyzed to find out the transition of the competition rules of taekwondo and judo and in which situations the competition rules were changed, and how to boost hapkido competition could be suggested as follows: First, unified game rules should be prepared in consideration of the technical system of hapkido. Second, the selection of judges and game operation should be done in an impartial and innovative manner, and education should be provided in that way as well. Third, hapkido should be selected as one of the regular sporting events of the Korean Olympic Committee in order to get administrative support from the government. Seventh, it`s needed to take measures to actualize the globalization of hapkido competition.
강승원(Kang, Seung-Won),길두송(Gil, Doo-Song),박동수(Park, Dong-Su),정원섭(Jung, Won-Seoup),김의환(Kim, Eui-Hwan) 한국신재생에너지학회 2011 신재생에너지 Vol.7 No.2
The wind speed at the altitude around 300 m is much higher and less variable than at the altitude around 80 m which is the same height of the MW class tower turbine's hub height. The wind power density is increased 0.37 W/m² per meter at the altitude around 6 to 7 km and 0.25 W/m² per meter at the altitude around 80 to 500 m. There are two types of power generation systems using lifting bodies. The one is that The generator is installed in the ground station and stretched into the lifting body through the tether. The other is that the generator is installed in the lifting body and stretched into the ground station through the tether. Many kinds of lifting bodies are also researched in the world, called kites, wings, single or twin aerostat, and so on. This article introduced the technical development status and the market prospects of the high altitude wind power generation system all over the world in detail.
Ko, Eui Jin,Jeon, Sung Jae,Han, Yong Woon,Jeong, Se Yeong,Kang, Chong Yun,Sung, Tae Hyun,Seong, Kee Won,Moon, Doo Kyung Elsevier 2019 Nano energy Vol.58 No.-
<P><B>Abstract</B></P> <P>Poly(3,4-ethylenedioxythiophene) (PEDOT) derivatives are synthesized by oxidative polymerization using sodium dodecyl sulfate (SDS) as an anionic surfactant dopant. The resulting polymeric materials featuring nanofiber-type one-dimensional (1D) structures are identified as poly(2‐butyl‐2,3‐dihydrothieno[3,4‐b][1,4]dioxine:dodecyl sulfate (PEDOT-C<SUB>4</SUB>:DS) and poly(2‐hexyl‐2,3‐dihydrothieno[3,4‐b][1,4]dioxine:dodecyl sulfate (PEDOT-C<SUB>6</SUB>:DS). The ratio of the DS anion doped into PEDOT-C<SUB>4</SUB>:DS and PEDOT-C<SUB>6</SUB>:DS is 0.16 and 0.23, respectively. The contact angle of water on the PEDOT-C<SUB>4</SUB>:DS and PEDOT-C<SUB>6</SUB>:DS films is 76.6° and 87.7°, respectively, showing hydrophobic properties similar to that with water on PVDF. It facilitated the fully uniform film formation due to excellent surface matching. Peeling force of PEDOT-C<SUB>4</SUB>:DS and PEDOT-C<SUB>6</SUB>:DS is stronger than the one of PEDOT:PSS‐CNT composite. GIWAX analysis showed that PEDOT-C<SUB>4</SUB>:DS formed the highly ordered edge-on structure and PEDOT-C<SUB>6</SUB>:DS formed the bimodal orientation consisting of edge-on structure mainly and face-on structure slightly. The electrical conductivity (σ<SUB>PEDOT‐C4:DS</SUB>=50.0 S cm<SUP>−1</SUP>) of PEDOT-C<SUB>4</SUB>:DS is 41.7 times higher than that of PEDOT:PSS (σ<SUB>PEDOT:PSS</SUB>=1.2 S cm<SUP>−1</SUP>).</P> <P>The output signals (maximum voltages/currents) of piezoelectric nanogenerators (PNGs, electrode/PVDF/electrode) using these materials as electrodes are PNG-1 (PEDOT:PSS‐CNT composite) 1.25 V/128.5 nA, PNG-2 (PEDOT-C<SUB>4</SUB>:DS) 1.54 V/166.0 nA, and PNG-3 (PEDOT-C<SUB>6</SUB>:DS) 1.49 V/159.0 nA. Of these, PNG-2 & PNG-3 show maximum piezoelectric output power of 63.0 nW and 59.9 nW at 9 MΩ compared to PNG-1 (41.0 nW at 10 MΩ). They are enhanced up to 53.7%. The excellent surface matching between a piezoelectric active material and an electrode material leads to high output power.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Two types of PEDOT-C<SUB>x</SUB>:DS show hydrophobic and one-dimensional structures. </LI> <LI> PEDOT-C<SUB>x</SUB>:DS have excellent uniform film on PVDF due to good surface energy matching. </LI> <LI> PEDOT-C<SUB>x</SUB>:DS have conductive nanofibrillar network and electrical homogeneity. </LI> <LI> PNGs with PEDOT-C<SUB>x</SUB>:DS show higher piezoelectric output power than reference. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Liquid core photonic crystal fiber with low-refractive-index liquids for optofluidic applications.
Park, Jiyoung,Kang, Doo-Eui,Paulson, Bjorn,Nazari, Tavakol,Oh, Kyunghwan Optical Society of America 2014 Optics express Vol.22 No.14
<P>A defectless hexagonal air-silica photonic crystal fiber (PCF) structure with its central hole selectively filled by a low-refractive-index liquid is numerically analyzed. Despite the fact that the refractive index of the liquid is significantly lower than that of silica, we found an optimal range of waveguide parameters to ensure light guidance through the liquid core in the fundamental mode, maximizing the light-liquid interaction over a desired wavelength range. Using the vectorial finite element method (FEM), we report detailed parametric studies in terms of the effective index, chromatic dispersion, optical loss, and modal intensity distribution of the liquid core PCFs.</P>
3-D Manipulation of ZnO Nanowire Using Optically Activated Thermoplastic Tip on Silica Fiber Taper
Sejin Lee,Doo-Eui Kang,Pyojin Jeon,Seongil Im,Ryong Ha,Heon-Jin Choi,Songnian Fu,Kyunghwan Oh IEEE 2014 IEEE photonics technology letters Vol.26 No.20
<P>Semiconductor nanowire offers various opportunities in novel optoelectronics yet its precise manipulation technique has not been fully developed. We proposed a new method to transport and manipulate individual single ZnO nanowire in 3-D space using an optically activated ethylene-vinyl acetate (EVA) tip on microtapered silica fiber. The microtaper fiber delivered laser light to optically activate the plasticity in the microscopic EVA spot, where the single ZnO nanowire was selectively adhered. Detailed principles and procedures are discussed along with a unique artificial structuring of nanowires.</P>
Microspore Division and Plant Regeneration from Shed Pollen Culture in Rice
Kim, Hyun-Soon,Kang, Hyeon-Jung,Lee, Young-Tae,Lee, Seung-Yeob,Nam, Jeong-Kwon,Kim, Tae-Soo,Rha, Eui-Shik,Jin, Il-Doo The Korean Society of Crop Science 2002 Korean journal of crop science Vol.47 No.1
An efficient system of rice microspore culture could contribute to the production of genetically modified rice. The microspores were isolated by mechanical or shed methods. The number of microspores per 100 anthers isolated at uninucleate stage was higher than (or similar to) those at binucleate stage in isolation method with pestle or spatular, but microspore divisions were not easily observed on both stages. On the other hand, pollen division in shed pollen culture was observed more frequently at uninuclear than at binuclear stage. Cold pretreatment at 1$0^{\circ}C$ for 10 days resulted in the best multicellular division to produce microcalli at 12.5% efficiency in shed microspores. Heat shock at 33$^{\circ}C$ for one hour before or after pollen shedding enhanced cell division and callus formation. Out of twelve green regenerants, two were haploids and ten were diploids based on the chromosome analysis of root tips. The size of stoma was 12$^{m}$ m in haploids and 15 ${\mu}{\textrm}{m}$ in diploids determined by scanning electron microscope (SEM).
Kim, Choong-Yong,Han, Kang-Hyun,Heo, Jeong-Doo,Han, Eui-Sik,Yum, Young-Na,Lee, Jin-Young,Park, Kyung-Su,Im, Ruth,Choi, Seong-Jin,Park, Jung-Duck Korean Society of ToxicologyKorea Environmental Mu 2008 Toxicological Research Vol.25 No.4
A screening study of the acute toxicity of organic arsenics such as arsenobetaine and arsenocholine, a product of arsenic methylation metabolite, and inorganic arsenic was carried out to examine hematological and serum biochemical parameters in cynomolgus monkeys(Macaca fascicularis). We found soft and liquid feces, and vomiting in all treated groups with inorganic and organic arsenics. The monkeys in inorganic arsenic-treated group showed a significant increase in vomiting frequency compared with those in three organic arsenics-treated groups. These results suggest that inorganic arsenic might be more toxic than three other organic arsenics tested. The monkeys in inorganic arsenic-treated group showed a decrease in platelet and an increase in monocyte on day 4 and the monkeys in arsenocholine-treated group showed an increase in reticulocyte percentage on day 8. The monkeys in inorganic-treated group also showed decreases in AST and ALT values and the monkeys in arsenobetaine-treated group showed a decrease in AST value and an increase in T-CHO value. However, these hematological and biochemical changes were within the physiological ranges, showing that the single dose of inorganic and organic arsenics did not affect at least hematological and serum biochemical parameters. The present study of toxicity with single dose of arsenics provides valuable indicators for longer term study of toxicity of repeated doses of arsenics in primates.