• 대한토목학회논문집
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• 제6권2호
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• pp.111-120
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• 1986

강재(鋼材) 뼈대 구조물(構造物)은 널리 사용(使用)되는 기본적(基本的)인 구조물(構造物)로서, 소성(塑性)힌지의 개념(槪念)을 도입(導入)한 설계(設計) 및 해석방법(解析方法)이 적절(適切)히 적용(適用)되고 있는 경우(境遇)라고 볼 수 있다. 소성해석(塑性解析)의 목적(目的)은 구조물(構造物) 각(各) 부재(部材)의 소성(塑性)모멘트를 알고 있을 때 붕괴하중(崩壞荷重)을 결정(決定)하는 것이며, 소성최적설계(塑性最適設計)의 목적(目的)은 구조물(構造物)의 총중량(總重量)을 최소(最小)로 하는 부도재(部都材)의 소성(塑性)모멘트를 결정(決定)하는 것이다. 본(本) 논문(論文)에서는 소성해석(塑性解析) 및 최적설계(最適設計)를 정적접근방법(靜的接近方法)(static approach)을 사용(使用)하여 Simplex method에 의해 해결(解決)하였다. 소성해석(塑性解析)의 경우(境遇), 종래(從來)의 계산시간(計算時間)을 훨씬 줄일 수 있었으며, 또한 본(本) 연구(硏究)에서 2층 구조물(構造物)의 최적설계시(最適設計時) 구조물(構造物)의 중량(重量)은 탄성설계(彈性設計)와 비교(比較)하여 약(約) 24%가 절약(節約)되었다.

• Computers and Concrete
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• 제21권5호
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• pp.495-504
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• 2018

The possibility of earthquakes in vulnerable regions indicates that efficient technique is required for seismic protection of buildings. During the recent decades, the concept is moving towards the insertion of base isolation on seismic prone buildings. So, investigation of structural behavior is a burning topic for buildings to be isolated in base level by bearing device. This study deals with the incorporation of base isolation system and focuses the changes of structural responses for different types of Lead Rubber Bearing (LRB) isolators. A number of sixteen model buildings have been simulated selecting twelve types of bearing systems as well as conventional fixed-base (FB) scheme. The superstructures of the high-rise buildings are represented by finite element assemblage adopting multi-degree of freedoms. Static and dynamic analyses are carried out for FB and base isolated (BI) buildings. The dynamic analysis in finite element package has been performed by the nonlinear time history analysis (THA) based on the site-specific seismic excitation and compared employing eminent earthquakes. The influence of the model type and the alteration in superstructure behavior of the isolated buildings have been duly assessed. The results of the 3D multistory structures show that the lateral forces, displacement, inertia and story accelerations of the superstructure of the seismic prone buildings are significantly reduced due to bearing insertion. The nonlinear dynamic analysis shows 12 to 40% lessening in base shear when LRB is incorporated leading to substantial allowance of horizontal displacement. It is revealed that the LRB isolators might be potential options to diminish the respective floor accelerations, inertia, displacements and base shear whatever the condition coincides. The isolators with lower force intercept but higher isolation period is found to be better for decreasing base shear, floor acceleration and inertia force leading to reduction of structural and non-structural damage. However, LRB with lower isolator period seems to be more effective in dropping displacement at bearing interface aimed at reducing horizontal shift of building structure.

• Steel and Composite Structures
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• 제35권3호
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• pp.305-325
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• 2020

Beams of steel frame-tube structures (SFTSs) typically have span-to-depth ratios of less than five. This makes a flexural beam unsuitable for such an application because the plastic hinges at the beam-ends cannot be adequately developed. This leads to lower ductility and energy dissipation capacities of SFTSs. To address this, SFTSs with bolted web-connected replaceable shear links (SFTS-BWSLs) are proposed. In this structural system, a web-connected replaceable shear link with a back-to-back double channel section is placed at the mid-length of the deep beam to act as a ductile fuse. This allows energy from earthquakes to be dissipated through link shear deformation. SFTS and SFTS-BWSL buildings were examined in this study. Several sub-structures were selected from each designed building and finite element models were established to study their respective hysteretic performance. The seismic behavior of each designed building was observed through static and dynamic analyses. The results indicate that the SFTS-BWSL and SFTS have similar initial lateral stiffness and shear leg properties. The SFTS-BWSL had lower strength, but higher ductility and energy dissipation capacities. Compared to the SFTS, the SFTS-BWSL had lower interstory drift, base shear force, and story shear force during earthquakes. This design approach could concentrate plasticity on the shear link while maintaining the residual interstory drift at less than 0.5%. The SFTS-BWSL is a reliable resistant system that can be repaired by replacing shear links damaged due to earthquakes.

• 한국콘텐츠학회논문지
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• 제12권1호
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• pp.225-233
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• 2012

본 연구는 <프리스트>라는 OSMU 텍스트의 내용분석을 통하여 재매개 논리와 특성 등을 살펴보고 문화 인터페이스 개념을 통해 다양한 미디어 콘텐츠의 관계를 밝혀보았다. 분석 결과 재매개의 이중 논리인 비매개와 하이퍼매개가 서로 공존하며 경쟁하였고, 재매개의 특징인 차용, 공격, 흡수 등의 다양한 특징들도 서로 교차되며 나타났다. 그동안의 뉴미디어 관련 연구는 각 분야 연구의 연장선상에서 새로운 미디어 콘텐츠에 적용한 이론의 재검증이나 새로운 정책 중심 연구가 주를 이루어져 왔다. 그러나 새로운 뉴미디어들은 3D를 비롯한 테크놀로지 중심의 시각화를 강조할 뿐만 아니라, 다양한 매체로의 콘텐츠 변환을 시도하고 있다. 이러한 환경변화 속에서 본 연구와 같은 재매개와 문화 인터페이스 개념을 토대로 향후 새로운 미디어 환경 변화에 적극 대응할 수 있는 미디어 콘텐츠의 다양한 대안을 모색해 볼 수 있기를 기대해본다.

• 한국콘텐츠학회논문지
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• 제13권11호
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• pp.617-625
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• 2013

[상실의 시대], [1Q84]로 잘 알려진 무라카미 하루키는 신작으로 다시 주목 받는 작가다. '색체와 기억'에 '란 신작을 통해 퇴색되어만 가는 기억의 인간 탐구를 보여준 하루키의 전작 <태엽 감는 새 연대기>에서 의상을 통해 캐릭터 정서와 그 변화하는 역사를 관찰한다. 본 연구는 다양한 신체표상을 통해 스스로를 타자로 재생산하거나 변신하고 있는 캐릭터를 시각화한 의상 묘사에 주목한다. 등장인물은 의상을 통해 새로운 자신의 존재성립의 의지로 내세우거나. 또 그 '표면'을 매개로 그때까지의 자신과 다른 자기를 표현하려는 시도로 도구화한다. 자신이 타인에게 어떻게 보이고 싶은지에 대해 형성된 신체는, 다양한 사회적 성명을 주장하는 경우가 된다. 신체를 형성하는 것에 의해 자기를 형성하는 실천도 가능해지는 것이다. 이에 본 논문은 등장인물의 내면과 외견에 강한 관련을 설정, 특히 의상을 등장인물의 캐릭터를 나타내는 소설적 장치로 인식하였다. 그 결과 작품 속에서 직접적, 혹은 상징적으로 묘사되고 있는 신체와 의상의 체계를 구체화하고 그 의미의 상징교환의 구조를 파악 한다.

• 보존과학회지
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• 제5권1호
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• pp.41-68
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• 1996

Stone-cultural-properties, distributed In the area, have been investigated and studied on the characteristics and the rock phases in the geological and conservational point of view. Stone-Buddhas in the area can be subdivided into Maebul-, General -, and Massive rock-types according to their styles. The rocks used in these stone-cultural-properties are mainly massive, coarse grained biotite granite of the Jurassic age, which is widely distributed around the Reckon-gun area. However, quartz-feldspathic banded gneiss, marble, phyllite and hornblendite are also used. These rocks are mainly distributed in the Yongin-gun area. This suggests that the rocks used. These rocks are strongly influenced by chemical weathering so that the rock surface is very irregular with $2\~3mm$ relief. Biotite granite used shows generally weathered surface of brown color due to chemical weathering of feldspars. Moss are pervasive partly on the surface to show black and/or green colors. The strong weathering may induce secondarily to appear the igneous lineation, onion-structure, and/or minor cracks latent in the rocks. The cultural properties In the area are relatively well conserved except Maebuls and one(Duchangri 3-story) pagoda. However, one stone-buddha may be grinded recently by machine to take off the weathered surface resulting in the loss of its age and the original detailed shape. For conservation, they must be scientifically considered on the shape, kind of the rock phase and characteristics of the weathered phenomena.

• 대한지구과학교육학회지
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• 제5권2호
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• pp.189-196
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• 2012

This study was conducted using the phenomenological research method to collect and analyze high school students' opinions about fusing "science" textbook that reflect the 2009 Revised Curriculum. Ninety six students were chosen to be participants from 32 high schools that selected by city and province. The data collection was carried by individual interviews and group discussions. The results are as follow; students' opinions were summarized to 50 themes, and then classified to 9 theme clusters and 2 categories. Students' opinions were divided into a positive position - "it is good because interesting material associated with life", "the structure of textbook is good", "teachers' efforts make class interesting", and "it will help in career choices"- and negative position - "the content is difficult to understand", "the configuration is complex", "I have less interest about it because it doesn't related College Scholastic Ability Test", "teacher's explanation is insufficient", and "it is not associated with career choice"-. The living-related material and story-telling configuration received good reviews from students. On the other hand, the configuration of topics makes many concepts to use, so students have difficulty understanding the content and pointed out the lack of teachers' explanations about unfamiliar areas. In order to solve the difficulties, variety teaching material for fusing "science" will be developed.

• 수산해양교육연구
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• 제9권1호
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• pp.49-56
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• 1997

It is the developing policy of fishing village of korea that the fishermen are not to leave their fishing village by the construction of abandant and rich fishing village in the social, cultural and economic side of view. The government has promoted the project to improve the fishing and agrarian village from 1992 year, but it is not so helpful to solve the problem of the island and fishing village. Therefore, it has to improve the structure of fishing village and to develope the vital and lively fishing village, Japan had enacted the special law for the promotion of out-island which was called the law for the promotion of Ri-do isalnd, and commenced to develop the Ri-do island. The law for the promotion of Ri-do island is limited to 10 years, but it was amended 10 times and Japanese government has invested as many as budget to Ri-do isalnd during 30 years. Korean government also had enacted and enforced the special law for the promotion of out-isalnd developement referring to Japanese system. However, it is neccessary at first to improve the system that the fishing village is able to develope the fishing port in order to make higher the efficiency of investment. Moverover, the earning differentials bewteen the city and the fishing village has to decrease by the developement of transport convenience and pavement of the road of the out-isalnd and remote fishing village. Otherwise, it is requested rapidily to set up the welfare policy for the aged people because the inhabitants of fishing village become to great age, and inhabitants could be at least diagnose one time every week in the good medical facilities. The ministry of marine and fisheries has to permit the sports fishing business by the small fishing vessel in order to increase the income of inhabitants of fishing village and put a lot of the fishing reefs which are constructed to 2-3 story into the sea. And then the sports fishing business will be flourish by the small fishing vessel.

• 한국구조물진단유지관리공학회 논문집
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• 제15권4호
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• pp.116-124
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• 2011

일반적으로 조적조는 시공이 용이하고 경제적인 구조로서 국내뿐만 아니라 해외에서도 가장 오래되고 광범위하게 사용되는 구조이다. 조적벽을 RC 골조에 장막벽으로 사용하는 채움벽 형태의 구조는 시공이 용이하고 경제적이기 때문에 저층 주거용 건물, 학교건물 등에 많이 적용되고 있으나, 설계시에는 비구조부재로 취급되어 채움벽의 효과를 반영하지 않고 있다. 본 연구에서는 기존의 사각형 조적개체의 횡력에 대한 취약성을 개선하기 위해 개발된 육각형 블록을 RC 골조 채움벽에 적용한 채움벽 골조에 대한 구조실험을 수행하여 육각형블록 조적채움벽의 효과를 평가하고자 하였다.

• 한국구조물진단유지관리공학회 논문집
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• 제18권5호
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• pp.107-115
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• 2014

본 연구에서는 건물의 질량중심과 면진층의 강성중심 사이의 차이에 따른 면진효과에 대하여 살펴보았다. 면진기술은 면진층에 설치되는 면진장치의 성능에 크게 의존하는 기술이므로 면진장치 제작 후 전수검사를 통하여 면진장치의 수평강성을 검토하게 되어 있다. 하지만 면진장치 성능실험 시 각각의 면진장치의 품질기준은 건축기준에는 정해져 있지 않으며, 이로 인해 설계 시 적용된 강성과 실제 강성의 차이가 발생하여 면진층 상부 부재에 큰 문제를 야기할 수 있다. 연구결과, 최대응답변위의 차이는 크게 나타나지 않았으나 편심이 증가할수록 최대응답가속도, 층전단력 및 상부구조의 부재력은 크게 증가하여 일부 부재에서는 과도한 손상이 예상된다. 따라서 면진층은 실제 장치 제작 후 전수검사를 실시하여 반드시 설계된 의도대로 편심이 발생하지 않도록 장치를 재배치할 필요가 있으며, 가능하다면 건물의 질량중심과 강성중심의 차이는 동일하게 설계할 것을 추천한다.