• Proceedings of the KSEEG Conference
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• 2002.10a
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• pp.137-151
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• 2002

최근 급속한 첨단산업의 발전과 더불어 각분야에서 신소재 개발등의 연구가 활발히 진행되고 있어 비금속 자원은 그 수요가 점차 증가하는 추세에 있다. 여러 비금속 자원중 장석은 세라믹, 법랑, 타일, 유약용 등의 요업원료와 유리, 용접봉, 플라스틱, 페인트, 카리비료등 무기 재료 공업원료로 다양하게 사용되고 있는 비금속자원 이다. 2001년도 우리나라 장석 생산량은 389,361톤 (2001년도 광산물 수급현황, 2002, 5, 산업자원부)이며 매장량은 41,470,000톤 (2001년도 광산물 수급현황, 2002,5,산업자원부)이며 전국적으로 등록된 장석 광구수는 811개에 개발광산은 69개 이른다. 이상의 예를 보면 각대한 양의 매장량과 장석 광산이 알려져 있지만 실제 연중 가행 광산은 10개 광산 미만이며 영세한 상태로 체계적인 개발이 이루어지지 못하고 있다. 이런 문제점을 해소하고 장석 자원의 확보 및 안정적 공급을 위하여 장석의 정의, 용도, 품질요건, 부존, 산출상태, 가행광산현황 및 장석자원현황등을 규명하여 장석광산의 향후 개발대책 및 고부가가치화에 필요한 자료를 제공하고자 한다.

• Proceedings of the SAREK Conference
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• 2004.11a
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• pp.138-138
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• 2004

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 1999.11a
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• pp.197-200
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• 1999

• The Journal of Society for e-Business Studies
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• v.13 no.2
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• pp.165-179
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• 2008

In this study we designed the killer services for the scene of bookstore in ubiquitous computing. To achieve this study, we have explored the unmet needs of employees and users in bookstores and examined whether the unmet needs could be served by the resources and capabilities of ubiquitous computing. Then we have extracted detailed killer services that includes value propositions and resource map by using statistical methodology. Finally, the killer services were designed to serve employees and users in bookstores with the service architecture. The result of this study will be applied to develop new business model in ubiquitous computing as the basic research.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.561-562
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• 2021

시대가 발전함에 따라 무선통신 기술인 사물인터넷이 점차 성장하고 있으며 모바일 중심으로 IT환경이 재편됨에 따라 전자상거래의 결제방식 또한 변화하고 있다. IT시대에 맞춰 개인의 실시간 위치정보를 기반으로 홍보할 수 있는 지능적 마케팅 수단으로 하이브리드 비콘을 활용하여 고객이 매장근처를 지나치거나 방문할 때, 프로모션 및 쿠폰 정보를 전송하여 실시간 마케팅이 가능하게 한다. 하이브리드 비콘은 고주파의 특성상 매장 안팎의 고객 위치를 정교하게 구분 및 제공할 수 있으며, 블루투스의 연결이 끊기더라도 일정시간 동안 마케팅 서비스를 제공하는 강점이 있다. 본 논문에서는 하이브리드 비콘의 고주파와 저전력에 대한 강점을 활용하여 오프라인 매장에서의 고객에게 프로모션 정보나 모바일 적립 서비스를 제공함으로서 오프라인 시장의 마케팅 및 O2O시장 성장을 목표로 한다.

• Journal of the Korean GEO-environmental Society
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• v.23 no.10
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• pp.21-31
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• 2022

Prospecting ice on Moon requires drilling systems to obtain subsurface samples and measure composition of ice deposits. Landers and rovers need to be equipped with drilling equipment in order to analyze the ice and subsurface resources located at the poles of Moon. These devices must be small, lightweight, low-power, highly efficient and high-performance units in order to function properly under the extreme conditions of the lunar environment. Researchers have developed a prototype drilling apparatus that is able to operate in atmospheric and cold environments. Newly developed drilling system in Korea, which is capable of performing not only sampling but also subsurface investigation, is introduced.

• Journal of Conservation Science
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• v.22
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• pp.15-30
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• 2008

The roof tiles from the tomb in Baekje Kingdom of the Danjiri site in Gongju, Korea were studied for the production techniques and raw material provenance based on archaeometric characteristics. The roof tiles had traditional shapes of Baekje Kingdom, which show flow texture on the surfaces and sections with the roof tiles of hard or soft-type. These roof tiles were locally produced, using refining soils according to mineralogical and geochemical characteristics. Also roof tiles were divided to 2 groups by firing temperature and physical properties. One of them had soft with porous texture and fired probably about 700 to $900^{\circ}C$. The other had hard with vitrified texture and probably fired about 940 to $1,020^{\circ}C$. Buried for long time and used as a tomb, roof tiles had experienced chemical alteration due to the enrichments of trace elements abundant in human tissues.

• The Journal of the Korea Contents Association
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• v.17 no.10
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• pp.161-170
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• 2017

Research should explore techniques that will allow disposal of the dead to help the living by providing public space, protecting the environment, and contributing to economic development. Its design might bring a cemetery back into community life and make a present of a park. This new design for a cemetery can provide a structural solution for limited burial sites on the metropolitan area of Korea. It is based on the shared sense of a cemetery, a joint ownership or co-ownership of the space of a cemetery. FBS model by Gero[1] is used for engineering a cemetery design development. This framework contains a dynamic character of the context where such design takes place among its function, behavior and structure. This study suggests a new cemetery concept rather than a simple civil engineering work for a cemetery. It aims for people to have a new perspective on a cemetery and contribute to the society through an eco-friendly business model, so FBS may be an adequate model for such design. It can be one of the innovative business models and designs for engineering cemeteries, implementing sustainable environment and changing the design from a cemetery to a natural park.

• Korean Journal of Heritage: History & Science
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• v.48 no.4
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• pp.4-23
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• 2015

Buried bronze objects are naturally corroded by their surrounding environment, which results in producing corrosion layers containing a number of constituents. Corrosion layers in stable condition protect the objects from the environment and also could provide information in terms of the objects. Characteristic and mechanism of the corrosion layers is likely to be valuable information for the conservation treatment. Many research have been conducted to figure out the formation and characteristic of the corrosion layers, but the more research should be conducted with various approach and analytical methods. Raman spectroscopy is one of the analytical methods to identify microcrystal as a compound while other analytical methods are used to identify element. Therefore, the aim of this research is to identify the characteristic of corrosion layers of both excavated bronze objects through the raman spectroscopy. Two analytical methods, which are raman spectroscopy and SEM~EDS, were used to analyse four excavated bronze bowls. In the case of bronze bowls, malachite was found from the exterior corrosion layer and albite, quartz, and microcline, which are minerals, were also found. Cuprite was detected from the interior corrosion layers illustrating slightly different spectrum due to the combined compound. Lead segregation shows the form of PbO, $PbSO_4$ and $PbCO_3$ or it replaced as cuprite. In this study, small number of samples were analysed. This research is likely to be useful information to figure out not only the characteristic of the corrosion layers but also the authenticity of the artifacts if relevant research will be conducted. Therefore, further comprehensive researches on the various archaeological objects and corrosion environment condition are required in the future.

• Korean Journal of Heritage: History & Science
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• v.40
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• pp.413-430
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• 2007

This study analyzed the foreign substances in waterlogged archaeological woods and compounds in soil where waterlogged archaeological wood was buried, in order to examine the relationship between burial environment and foreign substances in waterlogged archaeological wood. The XRF(X-ray Fluorescence Spectroscopy) and EDX(Energy Dispersive X-ray) analysis were conducted to examine the effect of iron(Fe) to blacken the waterlogged wood. The XRF results showed that investigated soil contained Si, Al, and Fe. Wood ash contained more sulfur and Fe than any other elements in the EDX analysis. Cellulose and hemicellulose were significantly reduced at the surface of wood, which is the blackened part of waterlogged wood. Foreign substances changed the surface color. These problems could be solved by removal of foreign substances in waterlogged archaeological wood using EDTA(Ethylene Diamine Tetra Acetic acid). The optimum condition to remove Fe from waterlogged wood by EDTA was investigated. To do this, the concentration of Fe removed was measured with various concentration of EDTA-2Na. The optimum pH of EDTA-2Na was figured to be 4.1 to 4.3. As the concentration of EDTA increased, the extracted concentration of Fe also increased. In the case of 0.4 wt% of EDTA-2Na, about 60ppm of Fe was eliminated and was stabilized after 48 hours. In the case of EDTA-3Na, the optimum pH was 7 to 8, and about 10 ppm of Fe was eliminated at 0.4 wt% of EDTA-3Na. In the case of EDTA-4Na, the optimum pH was 10 to 11, and about 20 ppm of Fe was eliminated at 0.4 wt% of EDTA-4Na. In conclusion, the iron(Fe) in waterlogged archaeological wood was removed by EDTA treatment and it increased the whiteness of the surface.