• 전기의세계
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• v.46 no.7
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• pp.43-44
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• 1997

우리나라는 원전연료로 사용되는 우라늄의 부존량이 매우 적을 뿐 아니라 품위가 낮아 경제성이 없으므로 정광을 외국에서 도입할 수 밖에 없으며, 원전연료 제조과정중 가장 중요한 단계인 농축 또한 핵무기 비확산에 관한 조약 등 국내외의 정치적 여건상 기술자립에 제약을 받고 있어 외국에 의존할 수 밖에 없는 실정이다. 이에 따라, 정부는 국내 기술자립에 제약을 받지 않는 성형가공 부문의 국산화를 추진하는 한편 해외의 우라늄광산 개발참여 등을 통해 원전연료의 안정적 확보에 힘쓰고 있다. 정부는 '79년 9월 원전연료 국산화 사업추진을 결정하였으며, '80년 12월에는 세부추진계획을 확정하였는데 그 기본방침은 다음과 같다. 첫째, 경수로연료는 외국과의 합작투자 방식으로 국산화하며, 둘째, 중수로 연료는 자체기술개발에 의해 국산화를 추진한다는 것이다.

• The Journal of the Convergence on Culture Technology
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• v.8 no.6
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• pp.269-274
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• 2022

Today, sports are becoming increasingly important for national development, with all countries raising the strategic goal of becoming a sports powerhouse. Among them, martial arts, which are active in China as the main stage among East Asian martial arts, have a long history and are meaningful, and the promotion of internationalization of martial arts is also important. In this study, major problems faced in the process of promoting martial arts internationalization in East Asia were analyzed in depth. Currently, the theoretical system of martial arts is inconsistent and insufficient, there is a big difference in cultural background from region to region, there is a lack of talent for internationalization, and innovative promotion methods are not yet mature. Based on the major problems encountered in the internationalization of each martial arts, we will analyze the internationalization strategy, establish a martial arts theory system, accept the diversity of martial arts culture, and supplement the internationalization talent supply mechanism to propose a martial arts internationalization promotion method. The future succession and development of Chinese martial arts on the global stage and the promotion of internationalization of the value of Chinese martial arts have important theoretical values and practical significance.

• 한국경영정보학회:학술대회논문집
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• 2007.11a
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• pp.460-465
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• 2007

국내 지방자치단체나 기업에서 기존의 TDM 방식의 교환설비를 차세대 VoIP 방식의 교환설비로 전환하면 고품질의 영상전화, 멀티미디어 서비스 등 다양한 기능과 효율성 통신비가 절감되는 효과가 있다. VoIP의 기술적용은 급속한 신기술 환경변화에 능동적인 대응의 필요성에 따라 추진되는데 많은 시간적 비용적 부분이 소요될 것으로 판단된다. 본 논문은 서울특별시 도시철도공사에서 운영중인 TDM 방식의 행정교환설비가 수명이 만료되어 "국내 최초" All IP 기반의 VoIP 방식으로 전면 교체한 사례를 가지고 연구하였다. 이 논문에서는 교체배경, 사업추진의 전략과 VoIP 구축작업 완료의 효과분석이 정리되어 있으며, 기업의 VoIP 도입시 고려사항 등을 제시하고 있다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.11a
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• pp.739-740
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• 2010

Numerical studies were performed to investigate an effective water cooling type for reducing the thermal load of deflector in test facility with two cooling types and various mass flow rate conditions. According to analyses a core water injection type was superior to a side water injection fro the viewpoint of reducing the thermal load of deflector.

• Journal of the Korean Society of Propulsion Engineers
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• v.13 no.1
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• pp.19-26
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• 2009

The response characteristics of $H_2O_2$ monopropellant thrusters at a pulse mode were presented in this paper. A catalyst bed was fixed to $MnO_2$/$Al_2O_3$ to investigate the thruster design effect to response time. Three different thrusters (50 N class) having different injectors, ullage volumes, catalyst grain sizes, and reactor volumes were prepared to investigate the response characteristics. As a result, the ignition delay, pressure rising and tail-off time of case 2-2 thruster with 16-20 mesh catalyst size were 14, 108, 94 ms respectively, which were comparable to requirement of response time at commercial hydrazine thrusters.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2006.11a
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• pp.122-126
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• 2006

Two types of pressurization system and low weight feeding piping system are developed. With sub-system tests, ullage pressure control performance was verified for 1 step and 2 step pressurization system and the feeding performance of feeding piping system was also verified. The weight of the feeding piping system is low enough for the application of launch vehicle. In addition, LOX conditioning system is developed for avoiding geysering and LOX temperature rise. Integrated performance was verified through integrated on-board feeding system performance tests.

• Journal of the Korean Society of Propulsion Engineers
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• v.19 no.2
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• pp.73-80
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• 2015

It had been almost a half century since Apollo Mission was ended. However, in these days, a lot of researches are being conducted for restoration and making improvements in technologies used in Saturn V rocket's development. This study reviews the first stage of Saturn V rocket(S-IC), from development history to technologies in various subsystems such as engine purge system, POGO suppression system, hydraulic and pneumatic control system, propellant dispersion system, telemetry system and retrorocket system. Understandings of S-IC stage's operation systems would be helpful in understanding of launch vehicle system and reduction of time and cost in future development process.

• Journal of Korean Society of Forest Science
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• v.99 no.6
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• pp.816-826
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• 2010

The purpose of this study is to investigate the types and processes of corporate philanthropy programs on forestry in Korea 500 largest companies. The result shows that 75 companies of Korea 500 companies (15.0%) participated in corporate philanthropy program related to forestry and there are 113 programs that those companies are proceeding. The types of 108 programs can be divided into 5 parts; 1) volunteer work, 2) creating forests & management, 3) one-time planting work, 4) forest education, 5) training experts & job creation. Among them, volunteer work (55.6%) and creating forests & management (29.6%) showed high proportion. The process of programs depends on their types. The volunteer and one-time planting work were mainly proceeded directly by corporate volunteer organization. But creating forests & management, forest education and training experts & job creation were usually proceeded in consort with local governments, NPOs and NGOs, and so on. These results show that Korean corporate philanthropy in forestry is progressing to strategic philanthropy through participation and partnership of various social groups. This shows the possibility to progress corporate community investment (CCI) with forest education and training experts & job creation.

• 월간산업보건
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• s.230
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• pp.2-4
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• 2007

• The Magazine for Energy Service Companies
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• s.68
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• pp.28-29
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• 2011

2013년부터 본격적인 성과보증계약방식의 도입에 따라 ESCO 산업은 성과보증 계약방식으로 전환하게 됨에 따라 위기와 기회를 동시에 맞이하게 되었다. 따라서 이제부터 성과보증방식으로 가려면 ESCO기업의 책임있는 자세가 더욱 필요하게 되었다. 이번에 전주대학교 산학협력단 조성환 교수가 추진한 ESCO산업 발전 방향 연구용역과 관련한 인터뷰를 통해 각 업체에서 준비해야 할 부분과, 2011년 ESCO산업에 대해 전망해보고자 한다.