• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.7 no.3
• /
• pp.448-452
• /
• 2006

This study was performed to evaluate the long-term teachability of the stabilized hexavalent chromium contaminated soils treated with chromium reducing agent and soluble phosphate. The study shows that $Cr^{6+}$ in the leachate was little detected and the remaining $PO_4-P$ concentration kept below 0.1 mg/L due to the formation of geochemically stable hexavalent chromium phosphate minerals from the reactions of labile soil $Cr^{6+}$ forms with the added soluble phosphate salt and chromium reducing agent. The results provide evidence for the potential use of the immobilization technique for the hexavalent chromium contaminated soil remediation in the near future.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
• /
• v.6 no.1
• /
• pp.55-63
• /
• 2008

A swelling clay should remain physically and chemically stable for a long time to perform its functions as a buffer material of a high-level waste (HLW) repository. The longevity issues in the swelling clay were reviewed to evaluate their importance in the performance of a repository. The review results suggest that an elevated temperature due to decay heat, groundwater chemistry, high pH environment by concrete, organic matter and microbes, radiation, and mechanical disturbance might significantly affect the long-term performance of a swelling clay as a buffer material. This paper will be used as basic informations to design the swelling clay buffer for a HLW repository.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.12
• /
• pp.7018-7024
• /
• 2014

This study examined the squared returns and absolute returns of KOSPI 200 with GPH (Geweke and Porter-Hudak, 1983) estimators. GPH was estimated by the long-term memory preserving time series parameter d in linear regression. This called the GPH estimator, which depends on a bandwidth m. m was decided by confirming the stable section of the point estimate by validating the track of the GPH estimator according to the value of m. The result suggests that by satisfying 0< d <0.5, the squared returns and absolute returns of KOPI 200 retains long-term memory.

• The Journal of the Korea Contents Association
• /
• v.1 no.1
• /
• pp.8-14
• /
• 2001

In this paper, we suggests a algorithms of recognizing the disease region by extracting particular organ from medical image. This method can extract liver region in spite of input image including many organs and charged format by using multi-threshold of feed-back-structure for segmentation liver region, and suggest the recognition of disease region in extracted liver, using multi-neural network structured by RBF and BP, overcoming the defect of single-neural network. The algorithm in this paper is proficient in adaptation for a multi form change of input medical image. This algorithm can be used at tole-medicine through automatic recognition after recognizing of the disease region by real-tire medical Image.

• Journal of Korea Port Economic Association
• /
• v.29 no.2
• /
• pp.63-79
• /
• 2013

The fundamental endeavor of this study is to investigate the asymmetric relationship between bunker price and Baltic Dry-bulk Index (hereafter BDI). Previous investigations employ linear form based analysis between oil price and BDI but we develop nonlinear and asymmetric cointegration method, which is properly able to capture the decreasing and increasing periods differently. The empirical results show there is no relationships in linear model (e.g. Engle and Granger's methods). On the contrary, our estimate reveals there is significant long-run relationship with asymmetric framework, which implies the necessity of nonlinear and asymmetric consideration to the bunker price analysis.

• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2006.11a
• /
• pp.407-412
• /
• 2006

Most of the monopropellant thrusters use catalyst for decomposing hydrazine. The thruster lifetime is determined mainly by catalyst lifetime, which can be investigated by firing tests. For the development of hydrazine decomposition catalyst, Hot-fire test to verify long-life performance of catalyst is required. This study describes the development of test equipment for long duration hot-firing and test/evaluation plan.

• Journal of the Korea Convergence Society
• /
• v.6 no.6
• /
• pp.213-219
• /
• 2015

This study examines how the features of communication on Social Network Service(SNS) affect building faculty trust and long-term orientation in professor-student relationships. The research model was developed based on the previous research about communication, SNS and relationship development. The researcher surveyed 210 students to collect research data, and 195 questionnaires were analyzed using SmartPLS. The results indicate that the quality, frequency, interactivity and openness of communication on SNS affect positively on faculty trust. Moreover, the quality, frequency and openness of communication on SNS affect positively on long-term orientation, whereas interactivity does not. This mean that faculty trust plays a mediating role between interactivity and long-term orientation.

• The Journal of Korean Institute for Practical Engineering Education
• /
• v.4 no.1
• /
• pp.99-107
• /
• 2012

The purpose of this study was to develop a Industrial Professional Practice(IPP) at university education as a way of innovation strategy in order to effectively respond industrial needs in dynamic environment. A Industrial Professional Practice model was developed by using a structured on the job training model and had a 7 steps which were "planning Industrial Professional Practice, selecting enterprises and students, matching enterprises and students, job analysis, design and development program, implementation, evaluation and feedback. Based on the Industrial Professional Practice model, the directions for the future studies was discussed.

• KDI Journal of Economic Policy
• /
• v.16 no.1
• /
• pp.217-250
• /
• 1994

21세기까지 기술선진국(技術先進國)에 진입(進入)하기를 원하는 한국경제는 향후(向後) 기술(技術) 및 시장(市場) 불확실성(不確實性)이 큰 핵심기반기술(核心基盤技術)의 자립도(自立度)를 높여 나가야 할 입장에 있다. 네트워크의 활용(活用)은 이와 같은 기술 및 시장불확실성을 극복하는 유용한 방법일 뿐 아니라 WTO라는 새로운 교역질서하에서 더욱 중요해지는 기술정책(技術政策)의 주요수단(主要手段)이다. 본고(本稿)는 기술혁신네트워크를 통한 기술의 창출(創出) 및 확산과정(擴散過程)에 유의하면서 한국 기술혁신시스템을 장기전망(長期展望)하고 산업계(産業界), 학계(學界), 연구계(硏究界) 및 정부의 장기기술발전전략(長期技術發展戰略)을 도출하고 있다. 장기발전전략에 기반한 기술정책(技術政策)의 당면과제(當面課題)는 대학(大學), 공공연구기관(公共硏究機關), 중소기업(中小企業)의 기술혁신 기여도 향상을 위한 개혁과 제도개선으로 요약된다. 왜냐하면 국내의 연구기관, 대학, 중소기업 등의 기술적 기여가 부진하면 기업내(企業內) 세계분업(世界分業)을 전개하는 대기업(大企業)의 혁신활동이 국내경제(國內經濟)와 유리(遊離)되어 전개될 수 있기 때문이다. 대기업들이 해외연구개발거점(海外硏究開發據點)을 통하여 해외 연구자원을 활용하고 해외생산거점(海外生産據點)에서 생산된 소재, 부품의 역수입을 증대하는 전략에만 주력하게 되면 국내에 지식집약적(知識集約的)인 산업활동(産業活動)의 집적(集積)이 지연(遲延)된다.

• Annual Conference of KIPS
• /
• 2016.10a
• /
• pp.764-765
• /
• 2016

다양한 체험 중 인체의 신비에 관심이 있는 아이들을 위한 교육 목적의 중강현실을 마이크로소프트 키넥트 장비를 활용해서 구현하였다. 기존에 책의 이미지와 마네킹을 통해 인체 장기의 구조를 학습하는 방법에서 한 단계 발전시켜 아이들의 상체에 증강현실로 인체 장기 구조 이미지를 보여줌으로써 색다른 체험을 제공하는 흥미로운 학습 방법을 제시하고 있다. 추가적인 기능으로, 아이들의 성장 발달에 도움을 주는 게임 및 추억을 간직할 수 있는 촬영 기능도 제공하고 있다. 이 기법은 건강 교육 체험에 활용하여 흡연자의 폐와 과음한 사람의 간 등을 당사자의 상체에 중강현실로 보여주어 건강하지 못한 인체 장기 구조를 체험해 기존 방식보다 더욱 현실감이 있는 체험적인 건강 교육으로 활용될 것으로 기대한다.