• Journal of Korea Water Resources Association
• /
• v.33 no.S1
• /
• pp.667-672
• /
• 2000

• Journal of Science and Technology Studies
• /
• v.13 no.2
• /
• pp.1-35
• /
• 2013

The aim of this article is to criticize the discourses and practices of the appropriate technology for international development cooperation in Korea which focus narrowly on the technologies and are oriented to the providers of technologies. To present an alternative, we will discuss the appropriate technology by the insights from 'socio-technical system' studies which underline not only technological side but also the social, institutional and user's side, and analyze the interactions between them. This research deals with several cases mainly regarding small scale's renewable energy from Laos, Thailand, Bangladesh, Mongolia and Nepal. We put out some suggestions to improve the discourse and practices of appropriate technology in field of international cooperation by Korea.

• Journal of Korean Tunnelling and Underground Space Association
• /
• v.9 no.4
• /
• pp.387-401
• /
• 2007

Recently, because of the restriction of land for construction and interference of adjacent structure, parallel tunnels with small clearance have been planned and constructed in many sites. In this case, the stability of pillar at center part is very important factor to satisfy the stability of tunnel structure under the construction. In this paper, numerical analyses for the asymmetry parallel tunnels with a narrow width of pillar have been carried out to search for the optimum reinforcement measure for rock pillar and verify the stability of tunnel. Rock pillar between each single tunnel is supposed to be under heavy load by rock mass. The analysis of stress state at rock pillar at various cases for construction conditions is required to investigate the structural behaviour of tunnels and stability of the pillar. Strength-stress ratio is calculated based on the failure theory of rock and the safety factor of tunnel is computed with strength reduction technique. Through these numerical results, reasonable reinforcement measures for rock pillar at parallel tunnel were established and recommended.

• Journal of Navigation and Port Research
• /
• v.28 no.5
• /
• pp.413-420
• /
• 2004

The Busan New harbor will be opened by 2011, after which it is expected that the marine traffic volume around this area would Increase significantly and that very large ships such as 12,000 TEU container ships would come into the port. Therefore, it is necessary to build a new ships' routeing by considering these factors. In this paper, environmental circumstances, marine traffics, and the preceding studies have been reviewed and ships' routeing is proposed through experts' opinions and Delphi technique. For the purpose of validation, the proposed ships' routeings are reviewed by several guidelines on the ships' routeing and through simulation studies.

• Proceedings of the KIEE Conference
• /
• 2007.11b
• /
• pp.231-233
• /
• 2007

구조개편 이후 전력수급계획 수립여건이 한전의 독점적 계책에서 사업자 건설의향으로 전환됨에 따라 신규설비 건설계획은 수익성 위주로 전환되었다. 이에 따라 본 논문에서는 기저선비(원자력, 석탄화력) 운전효율성 항상 차원에서 건설되던 양수설비의 적정 설비규모를 계통 공급신뢰도 측면, 에너지 이응 효율성 향상 측면, 전력시장에서의 경제성 측면에서 검토하여 최적전원구성(Best Fuel Mix) 유도론 위한 정책적 방향을 제시하였다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• 2004.11a
• /
• pp.579-583
• /
• 2004

A new and extendable highway should be planned and budgeted by estimating the total construction cost on the basis of the precise cost data. However, the demolition or disjointing cost could not reflect construction site condition sufficiently because it was simply estimated by multiplying the highway structure installation cost by the regular ratio($10\~70\%$) specified in the Korea Standard Estimate. The regular ratio for estimating of demolition and disjointing cost was calculated by not actual construction cost data but subjective experiences of field manager. Therefore, the reliance of the estimated demolition or disjointing cost has been declined. The primary objective of this study is to purpose the standard for estimating proper demolition or disjointing cost of relevant items through various site analysis and survey, and to investigate on the propriety of ratio-unit price method for estimating demolition and disjointing cost.

• Tunnel and Underground Space
• /
• v.27 no.6
• /
• pp.351-356
• /
• 2017

This study introduces the current status of the design for safety(DfS) introduced as one of the owner - centered construction site safety management plan, and presents the problems and the improvement plan. The design for safety has been shifting from the construction management-oriented safety management to the owner-centered safety management system, The owner has to make the design considering the safety from the design stage centered on the owner. The owner has to review and approve the adequacy of the safety-conscious design and The risk factors that can not be eliminated during design are the system to prevent the disaster at the construction site by planning to eliminate the risk factor when writing the safety management plan that is made at the construction stage. The design for safety system implemented from May 2016 will be further developed to prevent the risk of safety accidents that may occur in construction sites, contributing greatly to the reduction of construction accident. In addition, it suggests ways to develop more efficient and convenient system through continuous hazard finding and system improvement.

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.60 no.1
• /
• pp.12-19
• /
• 2018

• Proceedings of the Korea Water Resources Association Conference
• /
• 2015.05a
• /
• pp.511-511
• /
• 2015

국가적 측면에서 수자원의 효율적 관리는 국민의 안전 등 중요한 요소이며, 이를 위하여 수자원 장기 계획을 필요로 한다. 설계홍수량의 적정성 판단 및 첨두홍수량의 파악은 수자원 계획에 꼭 필요한 요소이다. 이를 산정하기 방법으로는 "설계홍수 추정 지침서(1993, 국토교통부)"에서 제시한 비유량법을 활용한 추정공식을 제시한 바 있다. 하지만, 기존에 제시된 비유량 산정 공식의 경우 유역면적 하나만을 매개변수로 하는 회귀식이기 때문에 급변하고 있는 강우 패턴 등의 반영이 어려울 것으로 판단되었으며, 특히 도시화 및 기후변화의 영향으로 인한 불투수면적의 증가와 집중호우 등의 극치수문사상이 발생됨에 따라 기존의 비유량법에 의해 첨두홍수량을 추정할 경우 많은 차이가 있을 것으로 예상된다. 또한, 하천기본계획 및 소하천정비종합계획 등 대부분의 하천관련 정비계획에서는 단위도법에 의해 산정된 홍수량을 계획홍수량으로 결정하고 있으며 비유량법에 의한 첨두홍수량은 계획홍수량의 적정성 검증 정도로만 활용하고 있으며 신뢰성에 의문이 제기되고 있는 실정이다. 따라서 도시유역을 대상으로 최근 수립된 하천기본계획 등의 계획홍수량 자료를 수집하고, 기존 비유량공식을 적용한 결과를 비교 검토하여 비유량 적용의 적정성을 판단하며 개선방안을 모색하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2010.10a
• /
• pp.161-163
• /
• 2010

말하기는 곧 행위라는 주장이 화용론의 핵심명제이다. VTS 대화는 선박들의 효율적이고 안전한 항해를 위해 이루어지는 언어적 상호작용 행위이다. 본 연구에서는 모든 VTS 화행은 항해행위의 수행에 따른 부수적인 요소가 아니라 필수불가결한 요소라는 점에 주목하고자 하였다. 먼저 화용론에서 다루는 대화의 협력원칙, 공손원칙, 명령화행 및 약속화행의 적정성, 최소대화의 원칙을 VTS 대화 상황에 적용하여 VTS 화행의 특성을 정립하고자 하였다. 그리고 실제 발생했던 해양사고에서 선박 간 담화 또는 대화를 분석함으로써 화용론적 실패가 충돌사고에 어떻게 영향을 끼치는지를 검토해보았다. VTS 상황에서 이루어지는 담화 또는 대화분석을 통해 해양사고의 원인을 심도 있게 분석하는 방안과 이의 결과를 항해사 및 관제사 교육에 활용하는 방안을 제시하였다. 덧붙여서 co-Navigation 개념이 항해안전의 새로운 패러다임이 되어야 한다는 것을 주장하였다.