• Steel and Composite Structures
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• 제35권4호
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• pp.527-544
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• 2020

This research presents the design and numerical assessment of composite steel-concrete frame structures with welded dissipative fuses. The assessment has been carried out based on linear response spectrum, nonlinear static pushover and time history procedures. The analytical expressions which define the envelope of the nonlinear response of the dissipative fuses are first presented and calibrated against experimental results available in literature. The assessment is then carried out according to a design methodology proposed herein. Outcomes of the numerical assessment indicate that the use of welded dissipative fuses successfully limited damage within the replaceable parts. Furthermore, although structures with dissipative fuses present lower strength and, generally, lower displacement capacity, their displacement ductility and global dissipative performance are generally higher than conventional structures, especially when the structure with dissipative fuses presents a dissipative configuration adjusted to the bending moment distribution diagram calculated for the applied seismic action.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2003년도 추계 학술발표회논문집
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• pp.344-351
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• 2003

In order to consider the characteristics of nonlinear dynamic responses of seismic isolated bridges reasonably, piers and isolators are modeled as a 2-DOF bilinear system. Then nonlinear time-history earthquake response analysis is accomplished many artificial input ground motions which were generated to reflect the characteristics of earthquakes. Damage probabilities and failure probabilities of each structural elements of the brides are calculated by using Monte-Carlo simulation method. Based on LCC evaluation considering various cost items of direct/indirect damage costs, the optimal design method of seismic isolated bridges is proposed. By using a sensitivity analysis about the design variables and a cost effectiveness evaluation in the viewpoint of LCC, the validity and the adequacy of proposed optimal design method are verified.

• 한국실내디자인학회논문집
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• 제13권4호
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• pp.147-155
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• 2004

The purpose of this research is to improve exhibition effectiveness by implementing hands-on exhibition technique that best provides adults with cultural resting place and children with outdoor education which simply supports school curriculum. By completing this research, the museum of natural history will become defined innovative as a place that enables people actively develop creativity For this sake, some of domestic natural science museums were selected as the samples in this study, such as Seodaemun of Natural History, Incheon Standing Science Pavilion and Daejeon National Science Museum, Which all produce experience-based exhibition in relatively brisk manner. First of all, this study attempted to identify the traffic line and behavioral characteristics of spectators who used experience-oriented exhibition through follow-up and observational study Then it divided samples into adults and children group to compare and analyze the ratio of using exhibitions, the ratio of spectators and the sojourn time according to the type of experience-oriented exhibitions. In addition, this study attempted to collect available data about spectators who were in conversation with one another on the other hand, it also attempted to determine any effects on using experience-based exhibition by performing a questionnaire survey, so that it might set up an index for behavioral characteristics the spectators who visit such exhibition.

• 한국산림과학회지
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• 제37권1호
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• pp.57-60
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• 1978

Significant findings concerning the cause of the gardening revolution of the eighteenth century in England, its landscape style and contribution to a new style are concluded as follows: 1. The English landscape garden is regarded as a great revolution in the history of landscape architecture, and it was in the eighteenth century, in England, that garden and landscape first came together. 2. For at no time in history has there been such general interest in gardens and in the total physical landscape, so much writing and criticism and open debate. 3. Garden design did not become a definite art form in England until the eighteenth century. During the period it can be seen that there were developing three distinct types of garden, that is, the picturesque garden, the 'poetic' garden and 'abstract' garden. 4. Also developing was a new appreciation for natural forms and natural landscape, expressed in painting, poetry and garden design, and the landscape gardeners tried bard to malce country scenery look as though man had not had a hand in it. Eventually these open spaces contributed to a new type of spatial form development of naturalistic landscape style which is today taken for granted as a normal component of the landscape architect's palette.

• 한국주거학회논문집
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• 제26권2호
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• pp.89-101
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• 2015

The purpose of this study is to explore the housing pathways of middle-class married women toward owning a first home. In doing so, an in-depth interview as a qualitative method was conducted, life history was utilized to track down the path to first-home owning, and all the interviews were transcribed for analysis. The research participants were well-educated middle-class full-time housewives owning a home. The findings indicated that family formation through marriage and child birth was a primary driving force to buy a home. It was shown that owning a home was perceived not just as a stepping stone for building both family wealth and social capital but as one of the most important pillars to reinforcing traditional family values. In spite of some intergenerational distinctions on the path toward home owning, commonalities across generations included that home owning was considered to be a social icon for middle-class, it became almost impossible for younger generations without parental support which stimulated the intergenerational transfer of wealth, and it was greatly determined by both family income (affordability) and home finance options(borrowing capacity). This research implies that the changing social landscape transforms the value on homeownership and could undermine the socioeconomic strengths of home owning. Nonetheless, it's of importance to strategically assist first homebuyers who are likely to be a member of middle-class.

• Journal of Information Processing Systems
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• 제13권3호
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• pp.618-629
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• 2017

Mobile nodes can't always connect each other in DTNs (delay tolerant networks). Many DTN routing protocols that favor the "multi-hop forwarding" are proposed to solve these network problems. But they also lead to intolerant delivery cost so that designing a overhead-efficient routing protocol which is able to perform well in delivery ratio with lower delivery cost at the same time is valuable. Therefore, we utilize the small-world property and propose a new delivery metric called multi-probability to design our relay node selection principles that nodes with lower delivery predictability can also be selected to be the relay nodes if one of their history nodes has higher delivery predictability. So, we can find more potential relay nodes to reduce the forwarding overhead of successfully delivered messages through our proposed algorithm called HESnW. We also apply our new messages copies allocation scheme to optimize the routing performance. Comparing to existing routing algorithms, simulation results show that HESnW can reduce the delivery cost while it can also obtain a rather high delivery ratio.

• 디지털콘텐츠학회 논문지
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• 제2권2호
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• pp.117-127
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• 2001

최근 인터넷의 급속한 발전으로 전자상점의 수가 계속적으로 증가함에 따라, 대부분의 전자 상점들은 고객이 전자상점을 이용하는 동안 고객에게 차별화된 제품 추천서비스를 제공하여 고객에 관심을 높이고자 한다. 이러한 CRM을 위한 서비스를 제공하기 위해서는 많은 고객 거래 정보 데이터베이스에 의해서 생성된 규칙을 이용해야한다. 개별화 전자 상점이 보다 더 효율적으로 운영되기 위해서는 많은 고객거래 데이터를 모두 활용하기보다는 정제된 고객 거래 정보가 필요하며, 이들 정보를 이용한 연관 규칙을 생성하는 것이 필요하다. 본 연구에서는 우수 고객의 거래 이력 정보를 뷰로 생성함으로써 데이터베이스 접근과 컴퓨팅을 줄이는 방법을 이용한 개별화 연관규칙 생성을 제안하였다. 특히 고객데이터가 정제된 우수고객의 이력 뷰로부터 연관 규칙을 생성하여, 보다 정확하고 효율적인 개별화 서비스를 지원하는 전자 상점을 설계 및 구축하였다.

• 건축역사연구
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• 제21권4호
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• pp.47-58
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• 2012

The purpose of this paper is to trace the architectural origin of the Bosung College Library (1935~37), which is currently used as Graduate School Building of Korea University. So far, numerous books have repeatedly described that the library was modelled on a Duke University library, but without any serious consideration. Through literature review, field-trip and archives investigation, this research discovered new critical facts concerning the origin of the building. First, Dong-Jin Park, the architect for Bosung College, saw a photograph of the Duke library in a Duke University catalog possessed by Chun Suk Auh, Professor of the college at that time. Second, the Duke library that he saw in the catalog, which might possibly be Bulletin of Duke University (Feb. 1931), is certainly the present Perkins Library (1930) in Duke University West Campus. Third, the architect probably referred not only to the library but also to other Duke buildings such as School of Medicine and The Union, of which photographs were also published impressively in the Bulletin. Although the Bosung College Library was inspired by the Duke buildings, however, it is undoubtedly a creative design work by the architect Park. Arguably, these findings broaden our view of Korean architectural history in the modernization period, and it is more than a confirmation of just one building's origin.

• 디지털융복합연구
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• 제11권11호
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• pp.667-673
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• 2013

백제문화제는 옛 백제의 도읍지였던 공주와 부여 지역의 역사적 기반을 바탕으로 백제문화를 재조명하고 전통문화를 계승한다는 목적 하에 개최되어 왔다. 백제의 문화를 소개하고 교육하며, 한국을 대표하는 역사문화축제라는 자부심을 가지고 지역문화발전의 계기를 마련하여 지역공동체의 문화적 정체성 확립에 기여하여 왔다고 할 수 있다. 그러나 오늘날 역사문화축제인 백제문화가 당면한 문제점으로 역사문화축제가의 의미 혹은 활용방안 등에 대한 인식 부족이 있다. 이는 당초 취지와 목적에 동떨어진 방향으로 진행되고 있다는 목소리가 크다. 따라서 백제문화제의 다양한 경연프로그램 중 백제역사의 자긍심을 고취하고 백제문화에 대한 우수성과 독창성을 바탕으로 국제적 관심을 유도하여 백제문화상품에 대한 참신한 아이디어를 발굴하고 디자인 창작열을 높인 우수한 인재를 발굴하고자 백제문화상품 전국공모전을 개최하고 있으며, 본 필자는 백제문화상품 전국공모전 통한 입상작의 문화 상품으로써 문화콘텐츠 산업으로 활용할 가치가 있다고 생각한다. 따라서 백제문화상품 전국 공모전에 관한 백제문화제 일반적 고찰, 국내 문화상품 사례를 통해, 백제문화상품 전국 공모전을 활용한 백제 역사, 문화, 재인식하고 찬란한 백제의 역사적 가치를 문화상품으로써 대중들의 관람, 소비, 홍보, 체험 등으로써 대중화하는데 기여하고자 한다.

• 한국지진공학회논문집
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• 제9권3호
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• pp.51-58
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• 2005

최근 우리나라에서는 건축적 또는 사회적 요구로 비정형 고층 RC건물이 급증하고 있으나, 이와 같은 건물을 내진설계하는데 요구되는 지진의 방향성과 직교성을 적응하기 위한 구체적인 방법이 제시되어 있지 않아 설계자들이 설계하는데 어려움이 있다. 따라서, 본 논문에서는 우리나라에서 실제 건설된 비정형고층 RC건물을 스펙트럼해석법과 시간이력해석법에 따라 SAP2000을 사용하여 동적해석을 수행한 후, 하부골조 기둥의 설계력을 비교함으로써 주축의 설정과 지진의 방향성을 고려하는 것이 설계력에 미치는 영향, 그리고 방향성과 직교성을 모두 만족시킬 수 있는 방법에 대해 연구하였다. 연구결과 내린 결론은 다음과 같다. 1) 지진에 직각방향 전단력이 발생하지 않는 방향을 주축으로 정의하여 설계부재력을 구하면, 동적밑면전단력 보정계수가 감소하기 때문에 X, Y축을 주축으로 정하여 설계부재력 구하였을 때보다 설계부재력이 $15\%$정도 작은 값을 보여주었다. 2) 100/30법에 따라 방향성을 고려하여 구한 설계부재력은 2방향 시간이력해석결과로부터 구한 최대설계부재력보다 큰 값을 보여주어 100/30법에 따라 직교성을 고려하는 방법은 타당한 것으로 나타났으나, 시간이력해석결과에서 부재력을 나타내는 벡터$(P,\;M_y,\;and\;M_z)$ 많은 부분이 100/30법에 따라 예측한 설계부재력의 영역을 벗어났다.