• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2007년 가을학술발표회
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• pp.55-77
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• 2007

Currently a large number of high rise building projects are under plan and a mega foundation system to support this high load with safety is requiring. The foundation of a highrise building is displaced by the building load, which influence the behavior of a super structure in reverse. In this aspect, the structural interaction analysis between a foundation and a super structure is necessary. In this study, the relationship of a superstructure of building and a foundation has been reviewed, considering the tendency of design from a capacity driven design to a performance design. Two different case studies have been introduced to help understand this relationship in more specific, the first case is the high rise building founded on a mat system on rock and the second is that on large diameter bored piles on soft ground condition.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.6-9
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• 2015

Traditional project management theory is based on a three-dimensional life cycle approach where the project managerseeks to optimize the dimensions of cost-schedule-technical (quality or design). This paper reports the findings of a case study analysis of two complex mega-projects in Michigan which confirm the findings of previous research and illustrates the use of a framework for five-dimensional project management (5DPM) that is for conceptualizing a complex project's scope of work. The framework elevates the recognition that the project's social/political context and the financial arrangements create complexity adding two new dimensions. This paper also demonstrates a methodology to graphically display a project's complexity to better understand and prioritize the available resources. The result is a "complexity footprint" that may help a complex project manager identify the boundary between controllable and uncontrollable projects impacts. The paper finds that applying 5DPM to the two case study projects has given the project delivery team a tool which is actually adding value to the complex project management process.

• 웰빙융합연구
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• 제7권2호
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• pp.39-47
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• 2024

This study investigates the impact of mega-influencers and micro-influencers on consumer trust, brand attitude, and purchase intention within the beauty industry. Methods: A survey of 160 adults was conducted in March 2024, analyzing responses to the influence of a beauty mega-influencer ("Isa Bae") and a micro-influencer ("Day Beauty"). Participants were surveyed online over two weeks, and the data were analyzed using statistical tools to compare the influence of both types of influencers. Results: The results indicated that mega-influencers had a more substantial effect on reliability and brand attitude compared to micro-influencers, although both types of influencers significantly influenced purchase intentions. Influencer attractiveness and expertise emerged as critical factors in shaping consumer perceptions and behaviors. Conclusion: This study provides insights into optimizing influencer marketing strategies by leveraging the distinct characteristics and scales of influencers to enhance consumer engagement and brand loyalty. The findings underscore the importance of choosing the appropriate influencer type to maximize marketing effectiveness and consumer trust in the digital marketing landscape.

• Steel and Composite Structures
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• 제34권6호
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• pp.837-851
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• 2020

This study aims to examine the interface shear behavior between precast high-strength concrete slabs with pockets and steel beam to achieve accelerated bridge construction (ABC). Twenty-six push-out specimens, with different stud height, stud diameter, stud arrangement, deck thickness, the infilling concrete strength in shear pocket (different types of concrete), steel fiber volume of the infilling concrete in shear pocket concrete and casting method, were tested in this investigation. Based on the experimental results, this study suggests that the larger stud diameter and higher strength concrete promoted the shear capacity and stiffness but with the losing of ductility. The addition of steel fiber in pocket concrete would promote the ductility effectively, but without apparent improvement of bearing capacity or even declining the initial stiffness of specimens. It can also be confirmed that the precast steel-concrete composite structure can be adopted in practice engineering, with an acceptable ductility (6.74 mm) and minor decline of stiffness (4.93%) and shear capacity (0.98%). Due to the inapplicability of current design provision, a more accurate model was proposed, which can be used for predicting the interface shear capacity well for specimens with wide ranges of the stud diameters (from13 mm to 30 mm) and the concrete strength (from 26 MPa to 200 MPa).

• 무역학회지
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• 제44권4호
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• pp.205-220
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• 2019

This article recapitulates the recent changes in trade laws, which may be accentuated due to the intriguing emergence of fortified protectionism and Mega FTAs. It points out the need to formulate not only the corporate strategy for enhancing the product differentiation and architectural capabilities but also the public policy, which comprises the industrial adjustment policy to cope with possible negative impulses caused by the digital trade and foreign direct investment. It is imperative for Korea to facilitate the alignment between corporate strategy and industrial adjustment policy as an effective means of enhancing industrial structure by nurturing those linkage effects between relevant forward and backward industries. Given the drastically volatile trade norms of multi-track trade policies, it may be a pivotal momentum for Korea to pursue a paradigm shift of its trade policy with a prime objective of achieving such an alignment between corporate strategy and industrial adjustment policy, which affords increased value-added and the further development of product or generic technology instead of resorting to the misuses and abuses of economies of scale and production technology for the maximization of export amount.

• 한국공간구조학회논문집
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• 제24권2호
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• pp.75-82
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• 2024

Since atypical high-rise buildings are vulnerable to gravity loads and seismic loads, various structural systems must be applied to ensure the stability of the structure. In this study, the authors selected a 60-story twisted-shaped structure among atypical high-rise structures as an analytical model to investigate its structural behavior concerning the outrigger system. The structural analyses were performed varying the number of installed layers and the arrangement of the outrigger system, as well as the placement of the mega column, as design variables. The analysis revealed that the most effective position for the outrigger was 0.455H from the top layer, consistent with previous studies. Additionally, connecting outriggers and mega columns significantly reduced the displacement response of the model. From an economic standpoint, it is deemed efficient to connect and install outriggers and mega columns at the structure's ends.

• 문화기술의 융합
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• 제9권3호
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• pp.391-398
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• 2023

본 연구는 대규모 뮤지컬 작품에서 필요로 하는 물리적 공간성과 극장 시설의 제약 없이 소극장에서 이동형 무대장치를 적용하여 공간성 창출 가능성을 중심으로 진행되었다. 국내 뮤지컬 시장에서는 대규모 뮤지컬의 성장세가 지속되고 있고, 이러한 배경을 바탕으로 본 연구에서는 이동형 무대장치를 기획하고 설계하여 대규모 뮤지컬 작품의 실습을 통해 소극장에서의 대규모 뮤지컬 작품을 공연 가능성을 분석하였다. 이를 위해 국내 뮤지컬 시장의 작품 분포를 분석하고, 대학 뮤지컬 교육에서 대규모 뮤지컬 작품 진출을 위한 환경 조성을 위해 공간성 창출 방법을 제시하였다. 이동형 무대장치는 고대 연극의 무대장치인 페리아크토이의 원리를 중심으로 옥외광고에 활용되는 페리아크토이의 정보전달의 특성과 뮤지컬 <노트르담 드 파리>의 이동형 기둥, 뮤지컬 <빨래>의 이동형 무대장치의 특성을 바탕으로 4면으로 구성된 기둥 형태의 이동형 무대장치로 제작되었으며, 이를 뮤지컬 <레미제라블>에 적용하여 공간형성과 인물의 내면 상태, 극의 분위기 형성을 위한 적용 가능성을 도출하였다. 본 연구는 대학 뮤지컬 교육에서 대규모 뮤지컬 작품의 공연 기회를 제공하는 것이 뮤지컬 산업과 교육의 발전을 위한 기반이 될 것으로 기대하며, 이동형 무대장치의 활용을 통해 소극장에서의 대규모 뮤지컬 작품을 공연의 적용 가능성을 제시하였다.

• Steel and Composite Structures
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• 제22권5호
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• pp.1019-1038
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• 2016

The use of high-strength concrete (HSC) in precast concrete segmental bridges (PCSBs) can minimize the superstructure geometry and reduce beam weight, which can accelerate the construction speed. Dry joints between the segments in PCSBs introduce discontinuity and require special attention in design and construction. Cracks in dry joints initiate more easily than those in epoxy joints in construction period or in service. Due to the higher rupture strength of HSC, the higher cracking resistance can be achieved. In this study, shear behavior of dry joints in PCSBs was investigated by experiments, especially focusing on cracking resistance and shear strength of HSC dry joints. It can be concluded that the use of HSC can improve the cracking resistance, shear strength, and ductility of monolithic, single-keyed and three-keyed specimens. The experimental results obtained from tests were compared with the AASHTO 2003 design provisions. The AASHTO 2003 provision underestimates the shear capacity of single-keyed dry joint C50 and C70 HSC specimens, underestimates the shear strength of three-keyed dry joint C70 HSC specimens, and overestimates the shear capacity of three-keyed dry joint C50 HSC specimens.

• 공학교육연구
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• 제18권1호
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• pp.47-53
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• 2015

이 논문의 목적은 메가 시티 서울의 기술상용화 네트워크 도시 형성의 가능성을 고찰하는 데 있다. 1960년대 이후 우리나라는 국가적 차원에서 볼 때, 급속한 경제 성장을 경험하고 있지만, 지역적 차원에서 살펴보면, 서울을 포함한 수도권과 비수도권 간 심각한 지역불균등 발전을 경험하고 있다. 필자는 이와 같은 지역불균등 발전의 해결 방안으로 서울을 중심으로 기술상용화 네트워크 도시 형성의 필요성을 제시하고자 한다. 기술상용화 네트워크 도시는 남북도시협력 축(통일 R&BD 지향-복합기술 R&BD 축), 메가 시티 확장 축(녹색 수출 R&BD 지향-녹색 수출 R&BD 확장 축), 중소도시 연계 축(평창 올림픽 R&BD 지향-생명기술 R&BD축), 메갈로 폴리스 축(R&D-R&BD 연계 협력 지향-기초기술 R&BD 축) 등 4가지 축으로 이루어진다.

• 국제초고층학회논문집
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• 제5권4호
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• pp.263-270
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• 2016

In this paper, the stability requirements for diagrid and mega braced structures are examined. The role of the secondary bracing system for the stability of a diagrid structure is discussed. A simple procedure is proposed for the design of the secondary bracing system when it is required. As a case study, the design of the Hearst Tower diagrid and its secondary bracing system are presented.