• 기술사
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• 제38권6호
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• pp.1-9
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• 2005

The Republic of Korea (South) and the Peaples Republic of Korea (North) had agreed to exploit the North Korean rich natural resources starting from the year of 2006. Through this mutual agreement DPRK shall quarantee ROK's investment in the North Korean Mines and supply mineral products for the compasation of the financial investment supported by ROK. In the area of northern part of Korea, many kind of natural resources such as Magnesite, Iron, Gold & Silver, Copper, Lead & Zinc, and Coal are plentifully deposited. In the area of southern part of Korea, however, most kind of natural resources have been exhausted and so presently major minerals such as Gold & Silver, Copper, Lead & Zinc and Coal are being imported and relying on foreign countries in whole quantity of the requirement. On the other hand Northern Part of Korea is making very slow progress in mining and exploitation owing to the lack of investment even though there are rich deposits of natural resources. And in Southern Part of Korea, they have most advanced production facilities and technologies in the world in the fields of Mineral Floatation, Steel Manufacturing, Nonferrous Metal Smelting & Refining and those plants fabrications. A combination of Southern Technologies together with Financial Support and Northern rich natural resources & Labour Power will be a most hopeful, desirable and mutually required 'South-North economic Cooperation' as the mining industries are labour intensive.

• KIEAE Journal
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• 제8권3호
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• pp.13-18
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• 2008

Recently it is urgent issue in every department that problem from environmental disruption such as global warming. As the case of streetscape works essentially at city scenery, it is inevitable that changing from present view, which centers facilities and buildings, to environmental harmonic scenery. This study plans climate adjusting ability and improvement of thermal efficiency by putting ecological elements to buildings on a street which are essential factors of streetscape. Ultimately, this not only makes a pleasant environment but also revives being withered earth. Street-environment on eco-scape will take a part in designing sustainable city. This study acquires the way how buildings on a street get applied ecological elements as following. Roof level part : the greening surface of the rooftop(included plant box type), the greening roof as a type of pergola, the greening surface of the middle floor rooftop(included plant box type). Elevation part : climbing type, downfall type, espalier, flower bed in balcony type, wall-installing type, water wall type, other design types. Ground level part : paving the whole surface with permeability, paving the gap with permeability, plant box type, ground plant type, waterside zone, wetland, fence greening type, terrace greening type, retaining wall greening type.

• 사상체질의학회지
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• 제19권1호
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• pp.38-49
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• 2007

1. Objectives This Study is to find efficacy of Red Poria and White Poria used for Soyangin Prescriptions in Lee Je-Ma's writings. 2. Methods We analysed Soyangin Prescription with Poria in ${\ulcorner}$Dongyi Suse Bowon Chobonkwon(東醫壽世保元 草本卷)${\lrcorner}$ , ${\ulcorner}$Dongyi Suse Bowon Gabobon(東醫壽世保元 甲牛本)${\lrcorner}$ , ${\ulcorner}$Dongyi Suse Bowon Sinchukbon(東醫壽世保元 辛丑本)${\lrcorner}$ and ${\ulcorner}$Dongyi Sasang Sinpyun(東醫四象新編)${\lrcorner}$ based on the efficacy of Poria written in ${\ulcorner}$DongMugo YakSungGa(東武遺藁 藥性歌)${\lrcorner}$ . 3. Results and Conclusions 1) Red Poria and White Poria seems to be different in Sasang Constitutional Medicine. 2) Poria in Soyangin Prescription had used from the traditional medical point at the beginning, in ${\ulcorner}$Dongyi Suse Bowon Chobonkwon(東醫壽世保元草本卷)${\lrcorner}$ , but its usage was changing until ${\ulcorner}$Dongyi Suse Bowon Sinchukbon(東醫壽世保元辛丑本)${\lrcorner}$ as the point of Sasang Constitutional Medicine. 3. It is necessary to use Poria in Soyangin Prescription as the essence of Soyangin's life because it effects on the whole body without any distinction from body's upper part with lower part and body's exterior part with interior part.

• Journal of Advanced Marine Engineering and Technology
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• 제32권5호
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• pp.724-729
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• 2008

Umbilical cord blood has been recently considered an attractive potential alternative as a source of stem cell transplantation to curing diseases such as leukemia, cancers, immune disorders. Normally the stored system of the umbilical cord blood specimen is equipped with a computer-controlled robotic arm that enables the samples to locate the identification places in liquid nitrogen tank at regulated temperature as about $-196^{\circ}C$. As the half of robotic arm is in the air and the rest part is submerged in liquid nitrogen, the temperature of robotic arm varies from ambient to liquid nitrogen temperature. In this study the temperature variation of upper part of arm above tank lid was thermally analysed by using the commercial code of Ansys. The result of analysis was that the upper part of robotic arm was seriously frozen due to heat transfer from liquid nitrogen as low as -$120^{\circ}C$. In order to solve the frost problem of robotic arm, small PTFE tube block as resistance material was introduced into the lower part of tank lid instead of the whole stainless steel(SUS) robotic arm. The results showed that the temperature of robotic arm above the lid was higher enough, and this method would be one of the very effective measure to solve the problem.

• 한국실내디자인학회논문집
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• 제19권3호
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• pp.111-118
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• 2010

The Buddhist reliquaries of these 6 Reliquaries(松林寺, 感恩寺, 法門寺, 慶山寺, 唐招提寺, 法隆寺 玉蟲廚子), when compared with those of China, Japan and Korea in the same period, they worshiped the Buddhist reliquary as a Buddhist God itself and put them as a part of the architectural decoration, being installed in the construction forms. In the form and the composition of the architecture, we can see those having been designed with very detailed and brightly decorated form. The Buddhist reliquaries in the Song-Lim-Sa, Kam-Eun-Sa, Famensi, Qingshansi, Toshodaiji, and the Horyuji Tamamushi Zushi, the most important ones in this research, were in the precious tent and the inner and outer Coffins shapes having completely the altar part, interior space part, and the ceiling part, which inform us the whole structure of the architecture in details. After all these researches, we conclude that the Buddhist reliquaries in form of the Treasure-architecture represented the architectural style of the same period as a form of industrial arts and we can see that they tried to use all of their highly skilled and talented methods to describe the Buddhist Pure Land.

• 한국주조공학회지
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• 제32권1호
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• pp.32-37
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• 2012

In this study, microstructural evaluation was carried out on secondary hardening type ultrahigh strength steel, Fe-Co-Ni composition. This paper as a first part of whole research presented the microstructural behavior by cyclic heat treatment. The cyclic heat treatment method includes normalizing, stress relieving, solution treatment and aging. Especially, solution treatments performed triple times to get maximized solution hardening. Phase transformation and microstructure were observed by using optical microscope (OM), Electron back-scattered diffraction (EBSD) and X-ray stress analyzer. During the triple solution treatment, size of grain boundary was dramatically decreased by generating a packet from the martensite transformation of residual austenite in the inner part of grain, whereas the hardness increase was not significant.

• 반도체디스플레이기술학회지
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• 제5권4호
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• pp.11-15
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• 2006

Expose equipment system that is used for manufacturing process of Flat Panel Display, is most important equipment in whole process. Expose equipment that is for making pattern of mask on substrate, consists of optical part, stage part and transport part. The stage is an important part that aligns mask and substrate for delivering pattern of mask to substrate exactly. In this paper, control system of expose stage that is able to use mask and substrate of diverse size, with PC controller using GUI interface instead of PLC control system. The existing PLC control system does not have the suitable structure for using mask of diverse size. GUI interface integration control system is based on PC. So it has the advantage of convenient use and active operation. We embodied PLC control system in integration control system based on PC, and verified utility possibility through the standard test course.

• 한국전산구조공학회논문집
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• 제17권4호
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• pp.459-467
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• 2004

본 연구에서는 부분적 강성 변경이 연속적으로 필요한 경우, 전체 구조물을 재해석하지 않고도 관심을 두고 있는 변위와 부재력을 실시간 응답 수준에서 재계산할 수 있는 "적응형 부구조물화를 이용한 부분 재해석 알고리즘"을 제안한다. PRAS 알고리즘의 핵심 개념은, 1) 대상 구조물을 강성변경부분과 강성고정부분으로 구분하고, 2) 강성고정부분을 강성변경부재들이 연결된 잔류자유도만을 갖는 부구조물로 응축한 후, 3) 강성변경부재들과 강성고정부분 부구조물의 결합으로 전체 구조물을 모델랑함으로써, 최종 평형방정식의 잔류자유도수를 줄이는 데에 있다. 이 때 강성고정부분의 부구조물화 과정에서 본 연구에서 제시하는 또 하나의 알고리즘인 "적응형 부구조물화 알고리즘"을 적용하여 일단 초기 해석이 완료된 후에는 잔류자유도 구성이 달라질 때 다시 부구조물화에 소요되는 계산량을 최소화하였다.

• 박물관보존과학
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• 제7권
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• pp.3-10
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• 2006

경주 은령총에서 출토된 청동제 합은 과거 접합되었다가 파손된 상태로 본체의 경우 전체의 절반 정도만이 남아있어 보존 및 전시를 위해서 보존처리 하였다. 이물질 및 열화된 접착제의 제거 후 재접합 하였는데, 비교적 많은 부분이 남아있는 뚜껑은 복원부위를 쉽게 분리할 수 있는 가역적인 방법으로 처리하였다. 본체의 경우 복원부위가 많기 때문에 유물의 하중을 잘 견딜 수 있도록 에폭시수지를 사용하여 접합하였다. 합을 비파괴 조사한 결과 주조품 이었으며 재질은 Cu-Sn-Pb의 3원계 합금으로 나타났다.

• 한국가스학회지
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• 제20권4호
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• pp.58-64
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• 2016

차량에 사용되는 주엔진은 부하영역 전체에서 효율을 증가시키기 위해 커먼레일 디젤엔진을 사용하고 있다. 그러나, 발전기용 엔진은 아직도 기계적 구성엔진으로 캠으로 구동되는 연료분사밸브가 사용되어지고 있다. 또한, 발전기용 엔진 대부분은 50%이하의 부분부하가 적용되고 있다. 따라서, 전부하에 세팅된 차량용 디젤엔진을 부분부하에서 효율적인 운전을 하기 위해서는 연료분사시기 재조정이 필요하다. 본 연구에서는 시설물에 사용되는 엔진발전기의 운용특성을 파악하여 연료분사시기를 재조정함으로서 부분부하 연료소비율을 개선시킨 결과를 연구하고자 한다.