• 기록학연구
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• 제42호
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• pp.37-71
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• 2014

현대 사회에서 메가 스포츠이벤트는 한 지역이나 국가의 스포츠 역사를 이해하는데 중요한 키워드로서 자리매김하고 있다. 이러한 역사적 의미를 지닌 메가 스포츠이벤트를 효과적으로 기록화 하여 후대에 전달하는 일은 매우 중요한 일이다. 그러나 국내에서 1986년서울아시안게임을 시작으로 1988년서울올림픽대회 그리고 2002FIFA월드컵대회 등과 같은 메가 스포츠이벤트가 다수 개최되었음에도 불구하고 한국의 체육 스포츠 현장에서는 기록의 중요성에 대한 인식 부재로 이를 체계적으로 기록화 하여 후대에 전달하려는 방법론에 대한 논의는 미진한 실정이다. 따라서 이 연구의 목적은 국내에서 개최할 예정인 메가 스포츠이벤트를 효과적으로 기록화 할 수 있는 방법론을 탐색하기 위하여 메가 스포츠이벤트의 진행 단계별로 기록화 사례를 분석하여 시사점을 도출하는데 있다. 이와 같은 연구목적을 수행하기 위해 문헌고찰을 통해 메가 스포츠이벤트의 진행단계를 이벤트 이전단계, 운영단계 그리고 이후단계로 구분하였고, 각각의 단계별로 참고할 수 있는 기록화 사례를 선정하였다. 이후 문헌고찰을 통해서 각 단계별로 선정된 사업의 개요를 파악하였고, 이를 토대로 현지 방문조사를 실시하여 구체적인 사업내용을 분석하였다. 각 단계별로 선정된 사례는 다음과 같다. 이벤트 이전단계는 국민의 기록(The People's Record)사업, 운영단계는 올림픽대회 지식관리(Olympic Game Knowledge Management)사업 그리고 이후단계는 올림픽 구술사(Olympic Oral History)사업이다. 이들을 분석한 결과는 다음과 같다. 첫째, 국민의 기록 사례는 다양한 계층의 경험을 포착하여 기록화 하는데 유용한 방법으로 이벤트 이전단계에서 활용이 가능하다. 올림픽대회 지식관리 사례는 대회운영을 위한 조직위원회의 업무 활동과 지식을 기록화하는데 효과적인 방법으로 이벤트 운영단계에서 이용이 가능하다. 셋째, 올림픽 구술사 사례는 이벤트의 전 단계에서 발생한 결락기록을 보완할 수 있는 방법으로 이벤트 이후단계에서 적용이 가능하다. 이상의 연구결과는 국내에서 개최가 예정된 메가 스포츠이벤트의 기록화에 일정한 역할을 할 것이며, 메가 스포츠이벤트의 기록을 관리하고 있는 기관에서 기록관리 방법론을 마련하는데 활용이 가능할 것이다.

• 한국전산구조공학회논문집
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• 제19권3호
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• pp.283-293
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• 2006

근래에 들어서 사회적 및 경제적인 요구에 의하여 건축구조물이 점차 고층화 및 대형화됨에 따라서 다양한 형식의 구조시스템이 연구 및 개발되고 있다. 비교적 최근에 개발된 초대형 골조시스템은 초대형부재의 조합으로 횡방향 강성을 충분히 발휘함으로써 초고층건물에 적합한 구조시스템으로 인식되고 있다. 그러나 이러한 초대형 골조시스템을 적용한 건물의 거동을 예측하기 위해서는 매우 많은 수의 절점과 요소로 이루어진 유한요소 모델을 해석해야 하므로 상당한 양의 해석시간과 엔지니어의 노력이 필요하게 된다. 따라서 본 연구에서는 초대형 골조시스템 전용 해석프로그램을 개발하여 초대형 골조구조물의 해석과 설계에 소요되는 시간과 노력을 줄이고자 한다. 이를 위하여 초대형 골조구조물의 특징을 활용한 효율적인 모형화기법과 행렬응축기법을 사용하여 해석에 사용되는 자유도수를 최소화도록 만든 해석모델이 개발되었다. 예제구조물의 해석을 수행하여 본 연구에서 개발된 프로그램을 사용한 결과와 일반적인 해석방법에 의한 결과와 비교함으로써 개발된 프로그램의 효율성과 정확성을 검증하였다.

• Journal of Korea Trade
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• 제23권3호
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• pp.118-137
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• 2019

Purpose - As global trade disputes intensify and global trade uncertainty increases due to the prevailing trade protectionism all over the world, mega-FTAs such as the RCEP and CPTPP are suggested as strategic trade policy options for export-driven small open economies, such as Korea. This paper aims to provide a comprehensive analysis of Korea's mega-FTA participation and the induced implications for the Korean economy. Design/methodology - We use a multi-region, multi-sector global CGE model, and investigate the different effects of both the US-China and US-EU trade wars on the relative changes in GDP, welfare, and trade under different trade policy regimes; (i) Korea does not participate in any mega-FTA, (ii) Korea participates in the RCEP, and (iii) Korea participates in the CPTPP. Findings - We show, among others, that though industrial effects might be largely varied, the overall enlarging of free trade zones through multilateral mega-FTA participation may contribute significantly to the macroeconomic soundness and stability of Korea, even when global trade protectionism prevails. Under RCEP and CPTPP trade regimes, Korea's GDP may increase even when the global trade environment deteriorates as trade wars occur and intensify between the US and China, or between the US and EU. It is also estimated that RCEP participation increases Korea's GDP, welfare (measured in equivalent variation), and total trade by 1.12%, $1.09 billion, and 2.54%, respectively, while CPTPP participation increases them by 0.19%, $0.92 billion, and 0.13%, respectively. Originality/value - Existing studies usually focus on the direct impacts of mega-FTA participation on macroeconomic variables such as GDP, welfare, and trade, and do not consider the possible buffer effects of a mega-FTA when the global trade environment worsens. In this paper, we analyze and quantify not only the direct impacts of RCEP and CPTPP on the main macroeconomic variables but also the possible buffer effects of the RCEP and CPTPP in the cases of the US-China and US-EU trade wars.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2009년도 춘계학술발표대회 논문집
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• pp.150-154
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• 2009

Flow distribution characteristics with varying inlet flow-rate in mega collector risers have been investigated, using commercial code FLUENT. The heat transfer in mega collector was not considered in this numerical study. Through the simulation, the following results were found. First, flow distribution characteristics in mega collector risers show the similar tendency in all cases. Secondly, with increased inlet flow-rate, flow distribution uniformity was getting worse.

• 국제초고층학회논문집
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• 제5권3호
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• pp.213-220
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• 2016

The "China Zun" tower in Beijing will rise to 528 meters in height and will be the tallest building in Beijing once built. Inspired by an ancient Chinese vessel, the "Zun", the plan dimensions reduce gradually from the bottom of the tower to the waist and then expand again as it rises to form an aesthetically beautiful and unique geometry. To satisfy the structural requirement for seismic and wind resistance, the structure is a dual system composed of a perimeter mega structure made of composite mega columns, mega braces, and belt trusses, and a reinforced-concrete core with steel plate-embedded walls. Advanced parametric design technology is applied to find the most efficient outer-perimeter structure system. The seismic design basically follows a mixed empirical and performance-based methodology that was verified by a shaking table test and other specimen lab tests. The tower is now half-way through its construction.

• 복식
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• 제57권4호
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• pp.110-125
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• 2007

The purpose of this study is to analyze efforts of the mesa trends on the modern fashion design. For the study documentary research and qualitative content analysis have been carried out. Articles in magazines, seminar reports, and news related to trends were collected and analyzed to develop mega trends nowadays. As results, $2002{\sim}2006$ mega trends were extracted to Co-divergence, Emotional tech, Bi-dentity, Private+One and $2002{\sim}2006$ design trends extracted to Camouflage, Transformation, Modular system, Blur, Ease. The influences of mega trends and design trends on the modern fashion design have been proved. Those were expressed as eclectic style, deconstructionist style, reductive style and functionalist style in fashion design. The present era could be defined as cultural pluralism blended with various cultures and styles. Fashion as the essential display of contemporary culture and society has been successfully confirmed in this study.

• 국제초고층학회논문집
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• 제2권4호
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• pp.323-330
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• 2013

The ASHRAE Technical Committee for Tall Buildings, TC 9.12, has defined a tall building as one whose height is greater than 300 feet (91m). Since the publication of the HVAC Design Guide for Tall Commercial Buildings in 2004, there were only about 300 buildings taller than 200 meters; this number has risen to 600 in 2010 and the prediction 765 buildings taller than 200 meters in 2012. There has also been an introduction of two new classes of tall buildings: ${\bullet}$ Mega tall, which are buildings taller than 300 m, and ${\bullet}$ Super tall, which are buildings taller than 600 m. The effect of ambient air temperature over the height of buildings, especially Mega tall and Super tall buildings. The ambient climatic conditions vary with altitude and these changes in ambient conditions can seriously affect load calculations and performance of super and mega tall buildings. This paper presents revised calculations for stack effect for Tall, Mega Tall and Super tall Buildings.

• Structural Engineering and Mechanics
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• 제59권2호
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• pp.327-341
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• 2016

This study addresses the effect of pre-stressed cables on a pre-stressed mega-braced steel frame through employing static analysis and pushover analysis. The performances of a pre-stressed mega-braced steel frame and a pure steel frame without mega-braces are compared in terms of base shear, ductility, and failure mode. The influence of the cable parameters is also analyzed. Numerical results show that cable braces can effectively improve the lateral stiffness of a pure frame. However, it reduces structural ductility and degenerates structural pre-failure lateral stiffness greatly. Furthermore, it is found that 20% fluctuation in the cable pretension has little effect on structural ultimate bearing capacity and lateral stiffness. As comparison, 20% fluctuation in the cable diameter has much greater impact.

• 국제초고층학회논문집
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• 제10권3호
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• pp.193-201
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• 2021

Cheongna City Tower is a 448-meter-high rise observatory tower with 8.7:1 aspect ratio located at central lake park in Incheon Cheongna international city. The tower is a crystal shaped image and it turns invisible when the façade is activated. The tower was planned to be hexagonal 30-story building with two basements which are composed of mega frame structure using mega column and mega brace. In order to minimize the wind effect, the blow-through area was installed so that the wind can pass through. This observatory tower is an unprecedented project since the whole building is covered by façade for invisibility effect.

• Earthquakes and Structures
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• 제15권5호
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• pp.487-498
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• 2018

Buckling-restrained braces are passive control devices with high level of energy dissipation ability. However, they suffer from low post-yield stiffness which makes them vulnerable to severe ground motions, especially near-field earthquakes. Among the several methods proposed to improve resistance of BRB frames, mega-brace configuration can be a solution to increase frame lateral strength and stiffness and improve distribution of forces to prevent large displacement in braces. Due to the limited number of research regarding the performance of such systems, the current paper aims to assess seismic performance of BRB frames with mega-bracing arrangement under near-field earthquakes via a detailed probabilistic framework. For this purpose, a group of multi-story mega-BRB frames were modelled by OpenSEES software platform. In the first part of the paper, simplified procedures including nonlinear pushover and Incremental Dynamic Analysis were conducted for performance evaluation. Two groups of near-fault seismic ground motions (Non-pulse and Pulse-like records) were considered for analyses to take into account the effects of record-to-record uncertainties, as well as forward directivity on the results. In the second part, seismic reliability analyses are conducted in the context of performance based earthquake engineering. Two widely-known EDP-based and IM-based probabilistic frameworks are employed to estimate collapse potential of the structures. Results show that all the structures can successfully tolerate near-field earthquakes with a high level of confidence level. Therefore, mega-bracing configuration can be an effective alternative to conventional BRB bracing to withstand near-field earthquakes.