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온도하중을 고려한 궤도-교량 종방향 상호작용 응답 분석
권오혁,윤경민,박범호,전병흔,임남형 한국방재학회 2015 한국방재학회논문집 Vol.15 No.6
When a continuous welded rail(CWR) track is supported by bridge, additional axial stress and displacement are occurred by trackbridge interaction, and they have an effect on safety and serviceability of track. Domestic and foreign standards for track-bridge interaction offer analysis methods and limit values which are guiding the safety design, because the influence on interaction is difficult to be evaluated quantitatively. In this study, measurement system was constructed on the concrete a track supported by a bridge, and field monitoring has been carried out to evaluate the influence on track-bridge interaction by temperature changes. And track-bridge interaction responses under various temperatures were analyzed by comparing results of measurement and numerical analysis. 교량 상 장대레일 부설 시 궤도와 교량의 상호작용에 의하여 부가축응력 및 변위가 발생하며, 이는 궤도의 안전성 및 사용성에 영향을 미친다. 국내외의 기준에서 교량 설계 시 궤도-교량 상호작용 해석기법 및 제한 값을 제시하고 있으나, 상호작용에 의한 영향을 정량적으로 평가하는 것은 매우 어려워 안전측 설계를 사용하고 있는 실정이다. 본 연구에서는 온도 변화에 따른 궤도-교량 상호작용 영향을 분석하기 위하여 교량 상 콘크리트궤도에 계측시스템을 시공하였으며 현장계측을 수행하였다. 또한 계측 결과와 수치해석 결과를 비교하여 온도변화에 따른 궤도-교량 상호작용 응답을 분석하였다.
권오혁,신동호 한국지방행정연구원 2000 地方行政硏究 Vol.14 No.2
Since the early 1960s, the Korean government put forward strong economic policies focused on large-scale chemical and heavy industries. This approach was highly successful by the mid-1980s. However, the approach lost its comparative advantage as the competition from other developing countries, such as China, has rapidly increased since the mid-1980s. The Korean government shifted its strategy to promote small-scale high technology venture firms, especially after the current government launched its governance after the 1997 economic crisis. Many local governments, under the recently decentralized government system, also created various policies and programs to assist high technology venture firms, attempting to strengthen their local economies. This paper examines the approaches that the Korean local governments took to assist high technology venture firms. The paper concludes that there existed serious over-investments led by policies confusion among various ministries and governments. The paper suggests, first, that various policies and programs created by individual ministries and local governments have to be coordinated by a certain agency to make governmental approaches more effective and, second, that each ministry and government must develop their own specialized roles of promoting the high technology industries.
헤어 업 스타일 분석을 통한 땋기기법 업스타일 재현에 관한 연구
권오혁,송주연 코리아뷰티디자인학회 2009 코리아뷰티디자인학회지 Vol.5 No.1
This kind of esthetical desires originate from a hope that wants to live more comfortable than before and it is now being expressed by creative thinking.Creative thinking is a process of thinking how to achieve a wisdom or a beautiful and comfortable life by thinking and researching the answers of natural acts based on scientific concepts.When we think of beauty culture design as a oriental and western cultural phenomenon, the hair style's peculiarity appears following the conditions of various facts like politics, economy, sociology, culture and religious.The peculiarity of hair style was expressed as inner and outer side of human activity's beauty culture using hair according the satisfaction that appears during the body and spirit, religious rituals.There are several functions that hair has. First, it protects brain that is the most important organ of our body, Second, it represents the position or wealth of every individual. Third, it becomes an important method to satisfy the esthetic desire. Forth, it forms and expresses the cultural value of formative arts that represent the era. Hair style has changed and developed according to status, ideology, value, social status.In the modern society, hair style is an expression that shows special attraction and a way of finding oneself.