• Proceedings of the Computational Structural Engineering Institute Conference
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• 2006.04a
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• pp.535-540
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• 2006

Recently, the resizing algorithms based on the displacement participation factors have been developed for sizing members to satisfy stiffness criteria. It is proved that this resizing algorithms made for utilizing worker's stiffness design are practical and rational when applied to aseismatic design in the range of elastic until now. However, by the preceding research we confirmed that the inelastic performance of steel moment-resisting frame designed by resizing algorithms is not better than that of the frame before resizing. We present therefore a plan for improving inelastic performance of steel moment-resizing frame to which resizing algorithms applied in this paper.

• Journal of the Korean Society of Systems Engineering
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• v.2 no.1
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• pp.31-36
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• 2006

Development of launch vehicle needs a large-scale and complicated System Engineering discipline interfacing to small-quantity production with special manufacturing processes. In general, the System Engineering discipline of launch vehicle has its relationship with Production, Operations, Product Assurance and Management disciplines and its internal partitions into the functions of System Engineering Integration & Control, Requirements Engineering, Analysis, Design and Configuration and Verification. As a function of Product Assurance, reliability of launch vehicle plays an significant role in risk management, system safety, flight safety and launch certification through design assurance. Moreover, major functions of systems engineering are integrated by means of reliability in the phases of design and verification. Therefore, derailed identification of system engineering interfaces of reliability, and execution of tasks for reliability assurance is required for successful development of launch vehicle. This paper identifies specific pattern and mechanism of the interfaces between reliability and system engineering.

• Child Health Nursing Research
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• v.12 no.1
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• pp.96-103
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• 2006

Purpose: This study was done to evaluate the effects of Yoga exercise on improvements in physical flexibility, posture management behavior, and self-efficacy in adolescents. Method: In this study, the design was a quasi-experimental research design with a one group pretest-posttest design. Participants were 32 students from one high school in Busan Metropolitan City, Korea, who did not engage in regular aerobic exercise and were willing to participate in this study. Yoga exercise was conducted for 70 minutes twice a week for 15 weeks. The data were collected from March 16 to June 22, 2004. The data were analyzed using descriptive statistics, and paired t-test with SPSS Win 12.0. Results: Trunk flexibility, posture management behavior, and self-efficacy significantly increased after the yoga exercise. Conclusion: Yoga exercise is recommended as a useful nursing intervention that could help prevent spinal-curvature-related disorders among adolescents.

• 한국태양에너지학회:학술대회논문집
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• 2011.04a
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• pp.48-53
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• 2011

In this study, it is to verify the applicability for a simplified model(IEC61400-2, Design Require-ments for Small Wind Turbines, 2006-03) is the international standard is used to the structural design. In the design process of a wind turbine, the safety of a designed wind turbine is one of the most important factors. The simplified model can be used to determine the design load for small wind turbines. So, this paper has been re-evaluated a small wind turbine design loads that produced already. As a result, the material characteristic value(Rchar) of Blade, Rotor shaft and the tower are $90E6[N/m^2]$, $441E6[N/m^2]$ and $94E6[N/m^2]$. Therefore, the value of the applied safety factor to each part of the survival probability of 95% are satisfied.

• 기술발표회
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• s.2006
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• pp.292-302
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• 2006

국내 건설산업은 현재 기술보다는 수주위주의 경쟁이 치열함으로서 종합기술 수준은 세계 25위권, 기획.설계 능력은 선진국의 70% 수준에 불과한 취약한 기술경쟁 기반과 시공 중심의 생산구조를 갖고 있다. 이러한 건설부문의 문제점을 극복하고자 정부는 2015년까지 건설 기술력 수준을 선진국의 90%까지 끌어올리기 위해 건설 분야의 연구개발 투자규모 확대 등 다양한 계획을 추진 중에 있다. 본 고에서는 상기와 같은 상황 속에서 장차 미래사회에 있어 건설교통 분야의 기술발전을 이끌 도시성장, 인구변화, 에너지 및 자원 고갈, 기후변화 등 대응기술에 대한 연구개발사업계획을 소개하고, 국내 건설기술의 재도약의 일환으로 2006년을 기점으로 시작된 R&D 혁신로드맵의 체제와 그 의미를 소개하였다.

• Archives of design research
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• v.19 no.1 s.63
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• pp.5-14
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• 2006

This is the follow-up research on aesthetic review for Korean wrestling uniform design and deals with practical design evolvement of Korean wrestling uniform. The process and contents of the research was based on the outcome of the ground research. I studied Japanese wrestling and marketing strategy of its uniform, which enjoy added value as well as elevated worth as cultural item, and then compared it with our traditional wrestling. In addition, I divided practical designs into color, material and style according to concept for further research. The most important factor in designing traditional wrestling uniform can be found in harmonization of tradition and modernism. It is essential to operate and manage design in consistent and systematic way that can harmonize with modern sports marketing and designs, which contains national sentiment and contemporary mind. Designing Korean wrestling uniform with consistent concept based on aesthetic parts of Korean wrestling uniform, this research is meaningful as an exemplary for traditional and cultural item design as well as national costume.

• Journal of the Society of Naval Architects of Korea
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• v.43 no.6 s.150
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• pp.667-674
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• 2006

Accurate prediction of ship dynamics, particularly roll motion, is very important in ship safety. In the past, empirical or vortex based methods were commonly used for the hydrodynamic roll damping predictions but they could not be applied to practical ship roll motion cause of limitations about geometries ad design conditions. Recently RANS-based techniques are developed for the practical ship motion analysis. In this study, RANS based roil analysis about a rectangular cylinder with WAVIS developed by MOERI/KORDI are performed and compared with the experimental data and other RANS results.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.203-208
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• 2006

The unutilized energy in urban area is commercially and environmentally worth recycling since it can be used as a good energy resource for the heating and cooling supply. Therefore, once heating and cooling demands are near the available unutilized energy resources, a high performance district heating and cooling can be realized by the network of unutilized energy technology. In relation to this circumstance, a road map of the unutilized energy technology is presented in this study.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.982-987
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• 2006

The fluid mechanics and heat transfer of surfactant turbulent pipe flows are characterized with particular emphasis on the effects of surfactant concentration and solution temperature on drag reduction and heat transfer reduction. The test fluids are the surfactant solutions of DR-IW616 supplied by Akzo Nobel Chemical in concentration of $100{\sim}3000ppm$. The solution temperatures studied are $5^{\circ}C$ to $50^{\circ}C$. The critical values of surfactant concentration and solution temperature are clearly identified for drag reduction phenomena.

• Proceedings of the KIEE Conference
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• 2006.07b
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• pp.1083-1084
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• 2006

The wide spread of DC electric railway systems such as urban rapid transits including heavy rail and light rail transits has significant ramification as the stray currents from return conductor rails can cause the electrochemical interference, that is, the electrolytic corrosion of both rails and outside underground metallic infrastructures. The immature understanding of either the railway authority who is responsible for establishing the necessary provisions at the design stage or the affected parties makes it difficult to prepare the optimum range of solutions for the long-pending interference problem. In Japan, however, numerous assessment studies have been carried out on the stray current interference, by which protective guidelines are provided by "Electrolysis Committee". In this paper, we review a guide book from "Tokyo Electrolysis Committee", namely, "Protective Methods for Stray Current Corrosion".