• KIEAE Journal
• /
• v.13 no.3
• /
• pp.21-26
• /
• 2013

Recently, as the concern over environmental problem has been serious all over the world, carbon has become a key issue to mitigate the problem. In the field of Architecture, various sustainable assessment systems and LCCO2 assessment strategies have been developed, guiding low carbon building while planning. However, assessment system for low carbon neighborhood, which can be more efficient strategy, is still in the stage of research. In this paper, as a research for low carbon assessment system and planning guideline for neighborhood, scope meeting domestic condition has been set and sustainable assessment system for neighborhood, which is similar to low carbon concept, have been compared. LEED-Neighborhood Development, BREEAM-Communities, CASBEE-Urban Development, and GBCC-Apartment Houses were used for comparison. As a result, it is found that those systems has many differences in judging system, aggregating method, scope of evaluation, and relations with a building assessment system. The concern about carbon is not insufficient yet. Finally, assessment system for low carbon neighborhood, which is not only for establishing the plan, but also for giving guideline at the very first state of the plan, should be developed as fast as passible. With the result of this paper, establishment of assessment criteria and the way to measure quantitative $CO_2$ should be studied forward.

• Journal of The Korean Digital Architecture Interior Association
• /
• v.12 no.2
• /
• pp.67-76
• /
• 2012

BIM and its quantity take-off widely apply to the construction projects and LCCO2 Assessment using the BIM's quantity take-off function can be tried recently. Because BIM modeling programs such as Revit and ArchiCAD do not provide adequate library for LCCO2 Assessment, quantity take-off data should be conversed and applied to Carbon Emission Coefficient using Excel program or manual work. Therefore, the purpose of this research is 1) to propose the Unit Conversion Systems for Carbon Emission Coefficient, 2) to provide basic library sets for BIM based LCCO2 Assessment method, and 3) to apply 11 material library sets on a apartment unit plan modeling to pursue the CO2 emission evaluation of the material production in the process of LCCO2 Assessment. Research results showed CO2 emission amount of 458.64kgCO2/m2 from the apartment unit plan modeling.

• Proceedings of the KIEE Conference
• /
• 2007.07a
• /
• pp.286-287
• /
• 2007

본 논문에서는 최근 유체소자 재료로써 많이 사용되고 있는 polymethyl methacrylate (PMMA)의 레이저 직접식각에 관한 특성을 나타내었다. 식각을 위한 레이저 원으로 기본파가 1064 nm, 반복율이 10 Hz인 Nd:YAG 레이저의 4고조파 성분 ($\lambda$=266 nm)을 사용하였다. X-Y-Z 축으로 이동 가능한 스테이지의 수평 이동속도를 변화시키며, 표면으로 조사되는 펄스 수를 제어하였다. 식각 후 광학현미경으로 식각 단면을 조사하여 식각 깊이와 폭을 측정하였다. 측정된 식각 깊이로부터 식각률을 계산하고, 그 값과 레이저 빔 밀도와의 관계를 알아보았다. 그 결과 시료 표면에 조사되는 레이저 빔 밀도의 로그값과 선형적인 관계를 갖는 것을 확인할 수 있었다. 또한 주사전자현미경을 이용하여 채널 형상 및 채널 내벽을 관찰하였다. 마이크로 채널 내벽에 식각 과정에서 발생한 생성물의 제거를 위해, 레이저 식각과 함께 질소가스 블로잉을 해주었다. 질소 블로잉 압력 1500 torr에서 식각 잔유물이 제거된 내벽을 볼 수 있었다. 실험결과, Nd:YAG 4고조파를 이용하여 PMMA 기판상에 유체 이동을 위한 마이크로 채널을 형성시킬 수 있었다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2010.06c
• /
• pp.126-131
• /
• 2010

국가과학기술지식정보서비스(NTIS)는 현재 15개 부처 청 16개 대표전문기관 및 8개 성과물전담기관으로 부터 데이터를 연계수집 및 통합하여 공동 활용하고 있다. NTIS가 상기와 같은 분산 환경에서 데이터를 통합한 후 서비스를 제공하고 있는 이유로 인해, 데이터를 제공하는 각 기관에서는 데이터 제공과 관련 하드웨어, 소프트웨어 및 제공대상 데이터에 대한 상세정보를 실시간으로 모니터링할 수 있는 기능을 요구하였다. 본 논문에서는 이러한 요구사항을 충족시키기 위해 개발한 정보연계모니터링(Real-time Monitoring: ReMon) 서비스를 소개한다. ReMon서비스를 활용함으로써 분산 환경에서의 데이터 통합을 실시간으로 모니터링할 수 있으며, 나아가 국가R&D정보의 수집 및 공동 활용체계를 개선시키는 데에 기여하였다.

• 한국벤처창업학회:학술대회논문집
• /
• 2024.04a
• /
• pp.135-141
• /
• 2024

최근 정부정책과 국내외 초격차기술 및 딥테크 중요성 대두로 어느때보다 기술창업에 대한 수요와 필요성이 높아지고 있다. 특히, 대기업과 함께 스타트업에서도 초격차 기술을 포함한 딥테크에 대한 접근성이 용이해지고 기술사업화를 통한 적기 시장진입을 위하여 다양한 시도와 노력을 수행하고 있다. 대기업에서는 국내에서도 점차 활성화되고 있는 Corporate Venture Capital과 함께 기술스카우팅등을 통한 사내벤처링(Corporate Venturing) 방법론을 통하여 기업의 신성장 동력확보에 노력하고 있다. 스타트업계에서는 정부 정책과 지원을 통한 다양한 사업들이 진행되고 있으며 중견 민간기업에서도 국내외 스타트업과 관련 창업보육기관들과 함께 다양한 상생협력 활동을 하고 있다. 특히, 극초기 기업을 발굴하고 보육하는 액셀러레이터 즉 컴퍼니빌딩에 대한 사례가 많음은 관련 업계 누구나 부인할 수 없는 현상이다. 본 연구에서는 저자가 대기업에서 다년간 참여한 사내벤처링 방법론 현장에서의 경험을 토대로, 대학에서 기술창업기업 발굴에 대한 방법론을 기획하고 지난 3년간 현장에서 직접 실행한 경험을 토대로 초격차기술창업 발굴과 성장전략 방법론을 제언하고자 한다. 파괴적 혁신의 패러다임이 제안된후 다양한 영역과 부문에서 이론에 대한 검증도 병행된 것처럼, 초격차기술창업 발굴의 수요가 급중하고 있는 현시점에 현실적이며 robust한 고유한 방법론이 연구되어 결과물이 기업과 시장에 적용되는 것을 기대해본다.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.34 no.3
• /
• pp.330-335
• /
• 2005

We have investigated the effects of Bu-Zhong-Yi-Qi- ang on the differentiation of murine bone marrow cells in methylcellulose culture. GM-CSF and IL-3 supported primarily the formation of granulocyte/mac-rophage colony formation. However, the addition of Bu-Zhong-Yi-Qi-Tang extract yielded a significant increase in the numbers of colonies and differentiated cells in the presence of GM-CSF and IL-3. We have analyzed CD11b (Mac-1) expression of differentiated cells from bone marrow by staining with monoclonal anti-CD11b antibody. The majority of colony-forming cells were in CD11b/sup +/ population. Also Bu-Zhong-Yi-Qi-Tang extract promoted the production of IL-6 and nitric oxide by macrophages. These results demonstrate that extract of Bu-Zhong-Yi-Qi-Tang, a prescription of traditional oriental medicine, is effective in supporting macrophage potential of the primary colonies.

• KIEAE Journal
• /
• v.13 no.4
• /
• pp.11-19
• /
• 2013

The purpose of this study is to establish the assessment baseline of $CO_2$ emissions from building operations in the view of GHG reduction policy in Korea. The assessment baseline of $CO_2$ emissions shall be used in GHG policy and Carbon Credits in building sectors, but the assessment baseline has not been studied enough or established yet. Also, $CO_2$ emissions from building operations will be variable according to the building occupancy. Therefore the baseline will be different and this study aimed at the establishment of the assessment baseline for residential apartments and office buildings firstly. After reviews of BEER and international standards for building $CO_2$ emissions such as ISO and UNEP-SBCI documents, the analysis of BEER certification data has been pursued for 292 residential apartment complexes and 65 office buildings in South Korea during 2004~2012. As analysis results, the assessment baseline was set to 23.03 $kg{\cdot}CO_2/m^2{\cdot}yr$ or 1.95 $t{\cdot}CO_2/unit{\cdot}yr$ for residential apartment complexes, and 95.91 $kg{\cdot}CO_2/m^2{\cdot}yr$ for office buildings according to the BEER certification basis. Additional assessment baselines were calculated according to year basis, region basis, public and private basis, and GHG policy basis. Finally, the established baseline for residential apartment complexes has been applied for the pilot project in M district, Seoul, and showed 24.97% reduction rate according to the BEER certification basis.

• The Journal of Engineering Geology
• /
• v.10 no.2
• /
• pp.215-233
• /
• 2000

The national geochemical baseline mapping project has been conducted since 1996 to establish a quantitative assessment system for geochemical hazards in natural environments. The geochemical image maps have been edited for thirty-six elements(i.e., 10 major oxides and 26 trace elements) in light sediments, finer fraction than 150 $\mu$m, collected from first- to second-order streams(totally 11,000) over five provinces in the western half(ca. 45,000 km$^2$) of Korea. Natural background values of the elements were given for different geological environments. Based on the statistics, geochemical baselines were newly obtained for a quantitative hazard assessment on toxicity of heavy metals and deficiency of essential nutrients. Some chosen examples of geochemical hazards are presented based on new geochemical image maps and related baseline data.

• Journal of Soil and Groundwater Environment
• /
• v.8 no.2
• /
• pp.19-35
• /
• 2003

In order 새 investigate the spatial and seasonal variations of heavy metal pollution in heavily industrialized urban area, urban roadside sediments were collected for five years from gully pots in Seoul City. A series of studies have been carried out concerning the physicochemical characteristics of the sediments in order to evaluate the contamination of heavy metals such as Cd, Co, Cr, Cu, Ni, Pb and Zn. Roadside sediments and uncontaminated stream sediments were analyzed for total metal concentrations using acid extraction. The roadside sediments are characterized by very high concentrations of Zn (2,665.0$\pm$1,815.0 $\mu\textrm{g}$/g), Cu (445.6$\pm$708.0 $\mu\textrm{g}$/g), Pb (214.3$\pm$147.9 $\mu\textrm{g}$/g) and Cr (182.1$\pm$268.8 $\mu\textrm{g}$/g), indicating an artificial accumulation of these metals to the sediment chemistry. Comparing with average contents of uncontaminated stream sediments, roadside sediments were shown zinc 14 times (up to 64.4), copper 9 times (up to 181.7), lead 6 times (up to 63.7), cobalt 6 times (up to 168.7), nickel 4 times (up to 98.4), cadmium 2 times (up to 12.8) and chrome 2 times (up to 40.2) high content. The relative degree of heavy metal pollution for roadside sediments collected from each district in Seoul City is evaluated using the “geoaccumulation index”. As a result, heavy-metal contamination is highest centering the oldest residential district and industry area, and contamination level decreases as go to outer block of the city. The factor analysis results indicate that the levels of Cu, Ni, Fe and Cr are strongly related to numbers of factories, whereas the concentrations of Cr, Zn and Cd dependant on pollution index, indicating artificial contamination due to site-specific traffic density.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.11 no.1
• /
• pp.121-129
• /
• 2007

The aim of this study is to investigate punching shear strength of exterior connections in the flat plate structure with rectangular column. To inspect the effect of column aspect ratios on the punching shear behavior, eight specimens for exterior connection were made and tested. In this experimental program the length of critical perimeter was kept constant, while column aspect ratio varied from 2.0 to 4.5. Two levels of concrete strength and slab reinforcement ratio were also considered. As the column aspect ratio increased, the punching shear strengths are decreased. The decrement of punching shear strength was small in specimens with high aspect ratio of column.