• 문화기술의 융합
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• 제4권2호
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• pp.61-67
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• 2018

본 논문은 공학교육 개선을 위하여 재정지원 사업을 수행한 대학의 사업성과 분석을 통해 지방 공과대학의 교육방향을 모색하고 개선점을 제시하는데 목적이 있다. 본 연구를 위해 공학교육혁신지원사업을 수행한 대학의 3년간의 사업 만족도 조사를 통해 성과분석을 진행하였다. 사업에 참여한 이해관계자를 대상으로 지원사업의 교육프로그램과 운영에 따른 성과 등 통계적 분석을 진행한 결과 지원사업의 종합만족도 평점은 73.8%에서 83.4%로 상승하고 있으나, 산업체 만족도는 상대적으로 감소하고 있다. 조사 결과 신입사원들의 업무수행의 창의성 및 문제해결 능력의 만족도가 낮아 사업의 종합 만족도가 감소한 것을 알 수 있다. 향후 공학교육 혁신을 위한 교육프로그램 설계를 통해 창의적 문제해결 능력이 배양될 수 있는 공학교육 개선방안을 마련하고자 한다.

• Environmental Analysis Health and Toxicology
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• 제31권
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• pp.26.1-26.9
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• 2016

Objectives Korea's Act on the Registration and Evaluation of Chemicals (K-REACH) was enacted for the protection of human health and the environment in 2015. Considering that about 2000 new substances are introduced annually across the globe, the extent of animal testing requirement could be overwhelming unless regulators and companies work proactively to institute and enforce global best practices to replace, reduce or refine animal use. In this review, the way to reduce the animal use for K-REACH is discussed. Methods Background of the enforcement of the K-REACH and its details was reviewed along with the papers and regulatory documents regarding the limitation of animal experiments and its alternatives in order to discuss the regulatory adoption of alternative tests. Results Depending on the tonnage of the chemical used, the data required ranges from acute and other short-term studies for a single exposure route to testing via multiple exposure routes and costly, longer-term studies such as a full two-generation reproducibility toxicity. The European Registration, Evaluation, Authorization and Restriction of Chemicals regulation provides for mandatory sharing of vertebrate test data to avoid unnecessary duplication of animal use and test costs, and obligation to revise data requirements and test guidelines "as soon as possible" after relevant, validated replacement, reduction or refinement (3R) methods become available. Furthermore, the Organization for Economic Cooperation and Development actively accepts alternative animal tests and 3R to chemical toxicity tests. Conclusions Alternative tests which are more ethical and efficient than animal experiments should be widely used to assess the toxicity of chemicals for K-REACH registration. The relevant regulatory agencies will have to make efforts to actively adopt and uptake new alternative tests and 3R to K-REACH.

• 항공우주산업기술동향
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• 제8권2호
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• pp.86-97
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• 2010

본 논문은 케로신 액체로켓엔진에서 세계 최고의 기술력을 갖고 있는 러시아와 우크라이나의 액체로켓 엔진 개발과정 및 동향을 살펴보았다. 구소련에서는 1960년대에 closed cycle을 채택하여 엔진의 연소압과 비추력을 최대한 높이는데 주력하였다. 그러나 1990년대 이후 경제적으로 어려워지면서 새로운 엔진개발에 드는 비용을 최소화하고 있으며, 이를 위하여 유사업종의 업체 간의 합병을 진행했고, 새로운 엔진개발에 기존의 부품을 최대한 사용하거나 시험-개선과정의 합리화를 통하여 시험엔진개수와 시험횟수를 줄이고 있다. 또한 국제 협력을 통하여 우주발사체시장에서 상업용 로켓을 위한 엔진 납품을 증가시키고 있다. 더불어 3성분이나 메탄 엔진 등 차세대 엔진 개발에도 주력하여 액체로켓엔진의 선두주자로서의 지위를 유지하려는 노력이 계속되고 있다.

• 에너지공학
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• 제29권3호
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• pp.57-63
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• 2020

In this paper, we reported that the global trend of cement production and utilization as raw materials and as a fuel. As we know, cement is one of the significant materials required for the construction industry. The recent trend of rising urbanization, both the cement and construction industry played a vital role. The cement industry is a major sustainable infrastructure for the countries. Currently, China producing cement half of the world's cement production. During the year 2018, Korea producing cements nearly 57.5 million metric tons. Waste materials are used as circular resources and also having tremendous benefits for cement production. Another important use of these circular resources is fuel for the cement industry. There is a large potential benefit of the cement industry, but it's creating a severe environmental threat. The cement industry contributes to the major emissions of CO2. This leads the global warming. As per the Paris agreement, the Korean government initiated the recycling policy of waste materials and also the utilization of circular resources for the prevention of limited natural resources and also the global warming effect.

• 한국환경과학회지
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• 제22권12호
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• pp.1579-1587
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• 2013

This study was performed to evaluate the asbestos exposure levels and to calculate excess lifetime cancer risk (ELCR) for the risk assessment of the asbestos fibers released from asbestos-cement slate roofing (ASR) building. Total number of ASR buildings was into 21,267 in Busan, and 82.03 percent of the buildings was residential houses, and 43.61 percent of the buildings was constructed in 1970s. For this study, ten buildings were selected randomly among the ASR buildings. The range of airborne asbestos concentration in the selected ten ASR buildings was from 0.0016 to 0.0067 f/mL, and the concentration around no-admitted ASR buildings was higher than that around admitted buildings. The ELCR based on US EPA IRIS (integrated risk information system) model is within 3.5E-05 ~ 1.5E-04 levels, and the ELCR of no-admitted ASR buildings was higher than 1.0E-04 (one person per million) level that is considered a more aggressive approach to mitigate risk. These results indicate that the cancer risk from ASR buildings is higher than other buildings, and systematic public management is required for control of no-admitted ASR buildings within near future.

• 한국환경과학회지
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• 제22권1호
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• pp.25-35
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• 2013

The concentration of organic compounds was analyzed at each step of BAC process though $BDOC_{total/rapid/slow}$. Further, bacteria communities and biomass concentrations measured FISH and ATP methods were analyzed. The bed volume (BV) of steady state is different from that of based on assessment of organic compounds removal. Bed volumes in DOC, $BDOC_{rapid}$ and $BDOC_{total/slow}$ removal at steady state were around 27,500 (185.8 day), 15,000 (101.4 day) and 32,000 (216.2 day), respectively. A biomass didn't change after the bed volume reached 22,500 (152.0 day) according to analyzing ATP concentration of bacteria. The concentration of ATP was 2.14 ${\mu}g/g$ in BV 22,500 (152.0 day). The total bacterial number was $4.01{\pm}0.4{\times}10^7$ cells/g at the bed volume 1,150 (7.8 day) (the initial operation) and the number of bacteria was $9.27{\pm}0.2{\times}10^9$ at the bed volume 58,560 395.7 day) that increased more than 200 times. Bacterial uptrend was reduced and bacterial communities were stabilized since BV 18,720 (126.5 day). When BV were 1,150 (7.8 day), 8,916 (60.2 day), 18,720 (126.5 day), 31,005 (209.5 day), 49,632 (335.3 day), 58,560 (395.7 day), a proportion of total bacteria for the Eubacteria were 60.1%, 66.0%, 78.4%, 82.0%, 81.3% respectively. ${\gamma}$-Proteobacteria group was the most population throughout the entire range. The correlation coefficient ($r^2$) between Eubacteria biomass and ATP concentration was 0.9448.

• 한국의상디자인학회지
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• 제12권3호
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• pp.83-92
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• 2010

The current design paradigm shift which has been in progress around the world would be a good opportunity for Korea, which has led the age of information, to build design competence and gain international competitiveness. In addition, it would be a good idea for colleges as well as firms to develop a new educational system and create academia-industry-research synergy. This paper researches the market KU project promoted by Design Venture KU which has been established by the College of Artand Design of Konkuk University as a part of differentiation strategy. The methods to improve the competitiveness of Korean fashion design by uniting college creativity and market practicality are as follows: First, for convergence of creativity and practicality, it is necessary to come up with a systematic design-based educational system. In other words, the undergraduate program needs to gradually expand courses by focusing on creativity instead of functions while the graduate program should be able to develop design pattern, textile and marketing products and secure the market to gain competitiveness as a business incubator. Second, the working-level engineers as well as professors will be encouraged to participate in special lectures or seminars and take necessary lessons. In addition, academia-industry cooperation courses will be further strengthened. It is also important to actively participate in an official contest or exhibition and receive a prize. Third, to elicit creativity from students, it is necessary to help them think in a flexible and experimental way with voluntary and interesting programs. As mentioned above, it is expected that 'Market KU Project' would help students build expertise by offering them a chance to experience the real world and become the world's leading designers in Korean fashion design.

• 공학교육연구
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• 제9권2호
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• pp.21-33
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• 2006

한국의 공학교육 인증은 1999년에 한국공학교육인증원을 설립하면서 시작되어 2001년부터 공학교육 프로그램을 인증하였다. 우수한 인재의 공과대학 진학 유도와 우수한 공학도의 양성 및 국제적으로 인정받는 공학도 양성 등이 목표가 되었다. 이러한 이유로 도입된 공학교육인증은 해를 거듭하면서 인증을 받고자 참여하는 대학과 프로그램의 수가 늘어 활성화되고 있다. 이 연구에서는 한국의 공학교육과 공학교육인증의 현황을 살펴보고 이를 바탕으로 한국 공학교육이 나아갈 방향을 모색해 보았다. 한국의 공학교육이 더욱 발전하기 위해서는 우수한 학생을 공과대학에 유치하기 위한 노력과 질 좋은 교육을 할 수 있도록 많은 지원이 필요하고, 국제적인 수준의 공학교육을 인정 받기 위한 워싱턴 협정의 정식 회원국이 되어야 하며, 이를 위한 공학관련 기관과 단체, 기업들의 적극적인 협조가 필요하다.

• Ocean and Polar Research
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• 제23권4호
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• pp.425-431
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• 2001

From an ecological point of view, the western part of the Atlantic sector is one of the most productive areas in the Southern Ocean. Antarctic krill (Euphausia superba) and krill-dependent predators such as fish, seals, and birds are abundant there, and most krill fisheries have operated in this area since 1970s. The hottest issues for the proper management of krill resources nowadays are to determine total biomass in this area, and to identify environmental forces controlling stock fluctuation. This paper reviews and collates information on ongoing oceanographic activities in the Antarctic Peninsula region concerning these issues. To delineate the status and function of Antarctic krill population in Antarctic marine ecosystems, multinational researches along the Antarctic Peninsula area have been developing recently. Four member states of CCAMLR (Japan, Russia, UK, and USA) had conducted acoustic surveys in January-February 2000 (socalled CCAMLR-2000 survey), and krill standing stock at 120 kHz was estimated to be 44.29 million metric tonnes in the western Atlantic sector of the Southern Ocean. On the other hand, the Southern Ocean GLOBEC (SO-GLOBEC) Programme has prepared a serial winter survey to examine the factors that govern krill survivorship and distribution in relation to shelf circulation processes. Ship-based surveys using ice-breakers are being conducted by three nations (Germany, UK, and USA) around the Marguerite Bay during the austral fall and winter 2001 and 2002. In addition to these two large-scale surveys, some CCAMLR members have carried out joint oceanographic surveys near the South Shetland Islands to detect ecosystem changes since 1994. Especially from December 1999 to February 2000, in conjunction with CCAMLR-2000 survey, four nations (Japan, Korea, Peru, and USA) conducted acoustic surveys to produce time-series information on krill distribution and biomass near the South Shetland areas. Though the aims of each program and the approach to solve the scientific questions were different each other, the results from each program fill the gaps between programs. Further cooperation and exchange in these activities could be beneficial to each program.

• 한국대기환경학회지
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• 제27권1호
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• pp.41-49
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• 2011

The power plants are one of the GHG major source among the sectors of fossil fuel combustion, therefore information of its emission factors is very essential to the establishing control strategies for the greenhouse gas emissions. The $CH_4$ and $N_2O$ concentration from power plants were measured using GC-FID and GC-ECD. The results showed that $CH_4$ emission factor was 0.33 kg/TJ and $N_2O$ emission factor was 0.88 kg/TJ. The $CH_4$ and $N_2O$ emission factors developed in this study were compared with those for IPCC default value and other countries emission factors. The results showed that $CH_4$ emission factor was lower than IPCC default value and Finnish emission factor, but higher than Japanese emission factor. $N_2O$ emission factor was higher Japanese emission factor and IPCC default emission factor however lower than Finnish emission factor. More research is needed on our own emission factors of various energy-consuming facilities in order to stand on a higher position in international negotiations regarding the treaties on climate changes.