• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2002년도 총회 및 춘계학술발표회
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• pp.347-350
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• 2002

Arsenic speciation changes between As(V) and As(III) are subject to changes in accordance with redox conditions in the environment. It is common to find contaminated sites associated with mixed wastes including both organic pollutants and heavy metals. We conducted microcosm experiment under hypothesis that the co-disposed organic pollutants would influence on the arsenic forms and concentrations, via degradation of the organic pollutants and the consequent impact on the redox conditions in soil. Artificially contaminated soil samples were run for 40 days with control samples without artificial contamination. We noticed arsenic in the contaminated soil showed different behaviour compared with the arsenic in the control soil. The findings indicate degradation of organic pollutants in the contaminated soil influenced on the arsenic speciation and concentrations. A further work is needed to understand the process quantitatively. However, we could confirm that degradation of organic pollutants can influence on the abiotic processes associated with geochemical reactions in contaminated soil. Degradation of organic pollutants can increase the mobility and toxicity of arsenic in soil and sediment by changing redox conditions in the geological media and subsequently from As(V) to As(III).

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 제35회 춘계학술대회
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• pp.63-70
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• 2002

Wear on the tube-to-spring contact is investigated experimentally. The wear is caused by the vibration of the tube while the springs support it. As for the supporting conditions, applied are the contacting normal force (P) of 5 N, just-contact (P = 0 N) and the gap of 0.1 mm. The gap condition is tried far considering the influence of simultaneous impacting and sliding on wear. Results show that the wear volume increases in the order of the gap, the just-contact and the 5 N conditions. This is explained from the contact geometry of the spring, which is convex of smooth contour. The contact shear force is regarded smaller in the case of the gap existence compared with the other conditions. Wear mechanism is considered from SEM observation of the worn surface. The variation of the normal contact traction is analysed using the finite element analysis to estimate the slip displacement range on the contact with consulting the fretting map previously obtained.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 제35회 춘계학술대회
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• pp.169-176
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• 2002

Axial crushing behavior of cylindrical shell Is utilized in the braking of the high-velocity impacting object. In this paper, truncated cone shape brake device is introduced. That is, thickness of the shell is increased gradually from the impacting end to the other end. A detailed experimental investigation on the quasi-static axial crushing behavior of truncated cone type brake devices has been performed. Specimens of various shape were tested to check the influence of design parameters such as length, radius, mean thickness, and conical angle of cylinder. Influence of the material properties were also investigated by adopting aluminum, low carbon steel, and stainless steel as constructing materials. By analyzing deformation procedures of the specimens, it is seen that conical angle influence the deformation mode and the sequence of the wrinkles generation. Braking distance and mean braking force of each specimen were predicted based on the crushing load measured from the tests.

• Asian Journal of Innovation and Policy
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• 제8권3호
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• pp.325-342
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• 2019

Gendered innovation in Science, Technology and Innovation, which seeks better science for both men and women by integrating sex and gender analysis, has become an important issue in the entire process of STI, as initiated by the European Commission, Canadian Institutes of Health Research in Canada and the National Institutes of Health in the United States. Korea has also attempted to reflect gendered innovations in Science and Technology as a critical factor in the 3rd and 4th National Plan, followed by the Act on Women Scientists and Engineers (2002). Against this background, the aim of this study is to prioritize the policy instruments regarding gendered innovation in Research and Development. Through the Focus Group Interview (FGI) and the Analytic Hierarchy Process (AHP), this study attempts to set the priority among selected criteria, various types of policy instruments, and the applied research development area. As a result, this study shows the preparation of the relevant legal and institutional mechanisms for the full introduction of gendered innovation in S&T, and the importance of various policy instruments for S&T innovation in the fields of planning, budgeting, managing national R&D projects, evaluating and impact assessment, etc., being derived in a systematic way to ensure their effectiveness.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2002년도 학술대회지
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• pp.180-187
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• 2002

최근 건설장비 및 시스템의 지능을 높이기 위한 요구가 증대되고 있다. 특히 건설산업에 영향력을 미칠 가능성 큰 반자동 및 자동화 시스템은 지속적으로 변화하는 환경내에서 임무를 스스로 수행하기 위하여 필요한 지시와 계획을 생성하기 위하여 인공지능 접근법이 필요하다. 본 논문에서 인텔리젼트 토공시스템을 위한 프레임웍을 제시하고자 한다. 인텔리젼트 토공시스템은 자동으로 건설장비를 위한 계획을 생성하고, 건설장비간에 협력을 할 수 있는 방법을 제시한다. 인텔리젼트 토공시스템의 구조, 제어방식, 계획 및 자원배당 방법을 본 논문에서 제시하고자 한다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2002년도 학술대회지
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• pp.57-63
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• 2002

미국 건설시장은 미국 전체 경제에 지대한 영향을 미치고 있다. 최근 통계에 의하면 미국 건설산업은 연간 약 4천억 달러 규모로 미국 GDP의 $4.5\%$을 차지하고 있다. 그리고 건설산업내의 치열한 경쟁 때문에 성과와 프로세스의 개선을 위해 벤치마킹이 관심을 끌고 있다. 본 글에서는 CII Benchmarking and Metrics 프로그램의 전반적인 소개와 현재까지 수집된 데이터베이스 그리고 데이터를 통계적으로 분석하여 회원사에게 제공하는 결과물을 소개하고 있다. 벤치마킹을 한국 건설시장에 도입하는 것은 한국 건설산업의 경쟁력 제고를 위한 한 방안이 될 것이다.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.193-196
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• 2004

이산화탄소 저감 및 처리 기술개발 프로그램은 과학기술부에서 지원하고 있는 21세기 프론티어 사업 중 하나로, 2002년부터 2012년까지 연간 9백만 탄소 톤 상당의 이산화탄소 저감 및 처리기술개발과 개발기술의 상용화를 목표로 하고 있다. 동 프로그램의 주요 개발기술 분야는 고온순산소 연소기술, 반응분리 동시공정기술, 미활용에너지 이용기술, 이산화탄소 회수처리기술 등 4개 부문에 걸쳐 추진하고 있으며, 현재 1단계 2차년도 사업이 진행되고 있다. 동 프로그램의 목표는 단순한 기술개발에 머물지 않고 향후 실용화 가능성이 높은 과제를 선별하여 집중적인 투자와 함께 기술개발이 이루어지고 있으며 동 프로그램을 통해 이산화탄소 저감 기술 시장에서 우위를 확보하고 기술 이전 및 수출을 통해 연간 1.5조원의 경제적 효과와 함께 배출권 확보에 기여할 것으로 보고 있다. 본 논문에서는 기후변화에 관련된 온실가스 감축을 위해 추진되고 있는 이산화탄소 저감 및 처리기술의개발에 따른 성과제고를 위해 개발기술들을 대상으로 향후 발생될 여러 가지 영향요인(impact factor)을 발굴하고 이를토대로 결정론적 평가법 및 AHP기법을 이용한 분석평가를 수행하였다.

• 한국조사연구학회:학술대회논문집
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• 한국조사연구학회 2002년도 추계학술대회 발표논문집
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• pp.241-253
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• 2002

1980년대 이후 전 세계적으로 유선 전화가 빠르게 보급되고 다양한 표본 추출 기법들이 개발되면서 자료 수집 방법으로서 전화 조사가 널리 사용되어 왔다. 한편 1990년대 초반 이후 통신기술이 급격히 발전하면서 대부분의 국가에서 핸드폰의 수가 점차적으로 증가했고 특히 최근 수년간에 걸쳐 그 수가 급증했다. 아울러 유선 전화 대신 핸드폰만을 소유하는 전화 가구들이 증가하면서 많은 국가들에 있어 유선 전화 가구 보급률이 감소하고 있다. 본 논문에서는 유럽 연합, 우리나라를 포함한 아시아 지역, 북미 등에서 핸드폰의 증가에 따른 유선 전화 가구 보급률의 변화와 동향을 살펴보고 특히 우리나라에서도 당면할 수 있는 전화 조사상편의 문제를 다룬다.

• 한국농림기상학회지
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• 제4권2호
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• pp.127-132
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• 2002

All the countries in RA II (Asia Region in WMO) welcome the establishment of a Web site dedicated to agricultural meteorology, because it is believed that the best way to improve and speed up the flow of information is the use of the Internet and the establishment of a Web site. In providing recommendation for the promotion and improvement of the AgroMeteorological service in RA II, a couple of key suggestions were proposed: (a) Exchanges of data and AgroMeteorological knowledge between member countries and between RAs, (b) Exchanges of experts between member countries as a necessary way to share the knowledge, and (c) Joint research between member countries to solve common problems in AgroMeteorological affairs. In order to meet the above requirements for RA II, an AgroMeteorological information network will be the most critical and dynamic aspect in sustainable agriculture in this region. In addition, the establishment of a Core AgroMeteorological station, recommended by CAgM of WMO, will require its own information sharing systems for communication among member countries. Inevitable use of information technologies (IT) such as information networks, databases, simulation models, GIS, and RS for regional impact assessment of environmental change on AgroEcosystem will be enforced. Thus, the regional Internet-based Agrometeorological information network has been in place since 1999, though all contributions to it have been volunteered by individuals, institutes, universities, etc.

• 한국환경성돌연변이발암원학회지
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• 제22권4호
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• pp.274-278
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• 2002

Phthalates, suspected endocrine disruptor, are plasticizer and solvent used in industry, and some phthalates are known as potential carcinogen. Most common human exposure to this compounds may occur with contaminated food. It may migrate into food from plastic wrap or may enter food from general environmental contamination, and it has become widespread environmental pollutants, thus leading to a variety of phthalates that possibly threaten the public health. Dibutyl phthalate (DBP) may playa part of cell proliferator, which mediates changes in gene expression and the metabolism of xenobiotics. An understanding of the role of DBP in modulating gene regulation should provide insight regarding mechanisms of DBP induced xenoestrogenic impact. To elucidate the type of genes that are associated with estrogenic activity induced by DBP at the dose (10$^{-8}$ M) appeared proliferating effects, the pattern of gene expression in MCF7 cells was compared between 17$\beta$-estradiol and DBP exposure in the cDNA microarray. From the results, it showed some differences of gene expression patterns between MCF7 cells treated with 17$\beta$-estradiol and DBP, and also DBP shows estrogenic potential with changes in estrogen-related gene expression levels.