• 제목/요약/키워드: the end of the 20th century

검색결과 142건 처리시간 0.026초

Prediction of the remaining service life of existing concrete bridges in infrastructural networks based on carbonation and chloride ingress

  • Zambon, Ivan;Vidovic, Anja;Strauss, Alfred;Matos, Jose;Friedl, Norbert
    • Smart Structures and Systems
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    • 제21권3호
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    • pp.305-320
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    • 2018
  • The second half of the 20th century was marked with a significant raise in amount of railway bridges in Austria made of reinforced concrete. Today, many of these bridges are slowly approaching the end of their envisaged service life. Current methodology of assessment and evaluation of structural condition is based on visual inspections, which, due to its subjectivity, can lead to delayed interventions, irreparable damages and additional costs. Thus, to support engineers in the process of structural evaluation and prediction of the remaining service life, the Austrian Federal Railways (${\ddot{O}}$ BB) commissioned the formation of a concept for an anticipatory life cycle management of engineering structures. The part concerning concrete bridges consisted of forming a bridge management system (BMS) in a form of a web-based analysis tool, known as the LeCIE_tool. Contrary to most BMSs, where prediction of a condition is based on Markovian models, in the LeCIE_tool, the time-dependent deterioration mechanisms of chloride- and carbonation-induced corrosion are used as the most common deterioration processes in transportation infrastructure. Hence, the main aim of this article is to describe the background of the introduced tool, with a discussion on exposure classes and crucial parameters of chloride ingress and carbonation models. Moreover, the article presents a verification of the generated analysis tool through service life prediction on a dozen of bridges of the Austrian railway network, as well as a case study with a more detailed description and implementation of the concept applied.

방사형 격자패턴 무아레무늬 표현을 위한 직물 디자인 연구 (A Study on the Textile Design utilizing Radial Grating for $Moir{\acute{e}}$ Patterns)

  • 김병미;이미자
    • 한국의상디자인학회지
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    • 제10권1호
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    • pp.117-123
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    • 2008
  • When it comes to clothing design, after the mid 20th century some internationally renowned designers began to recognize the pivotal role clothing materials play in attracting the hearts of customers. Accordingly, they started to take advantage of new clothing materials in the sector of clothing design. While the theme of fashionable clothing products shifts from style and color to clothing materials, fashion designers place the quality of materials at the center of clothing designs. Fashion designers also realize that good quality of materials should be used to boost the value of products as well as to satisfy the conditions of creativity, practicality and aesthetics. In particular, as the non-apparel industry in which clothing materials are the most important aspect between fashionable color, silhouette and details is enhancing their attention to develop various materials in order to meet the needs of customers, the fashion industry places a high premium on textile design which is the pinnacle of expressing emotion on clothing materials. In addition, the industry raises awareness of developing more sophisticated and differentiated materials. Our thesis covers the way how to apply $moir{\acute{e}}$ pattern to clothing design on the basis of research. In order to put that research into practical use, we produced textiles which effectively display $moir{\acute{e}}$ pattern. Before this process, we tried to ensure that radial grating created $moir{\acute{e}}$ pattern effects. To this end, the weaving process was applied, depending on whether light can penetrate textiles or not. Then, we manufactured test-products using $moir{\acute{e}}$ pattern.

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농촌 노인의 마을 공동시설 이용실태 분석 및 개선방향 (Improvement Strategies for Optimum Usage of Community Facilities by the Rural Elderly in Korea)

  • 이정화;강경하;정남수;박공주;윤순덕
    • 농촌계획
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    • 제11권3호
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    • pp.19-27
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    • 2005
  • Rural Korea has been becoming heavily aged societies from the end of 20th century due to the massive depopulation of young generation and extension of the average span of human beings. Although rural communities in Korea had been traditionally based on closely webbed social relations, almost all of community self-help organizations disappeared in recent time with very strong urbanization trend. However, almost all rural villages in Korea have the village seniors' union -'NO-IN-HOE' in Korean speaking- of which members usually use, operate and maintain community facilities in terms of voluntary base. Using these facilities, most of public/common/private services and community activities have been being served or provided. So, the purpose of this study is to investigate the usage tendency of community facilities and needs of the rural elderly and to propose the improvement strategies for their optimum usage. For this purpose, data was gathered both from community (107 villages) and individual level surveys(881 older people). The statistical method used for data analysis was descriptive statistics. The major findings were as follows : It was found that the dominant family type of the rural elderly was elderly-only household (75%) with very limited economic capability. There are 2$\sim$3 common community facilities with village including the seniors' center -'KYOUNG-RO-DANG' in Korean speaking. Many of the elderly (74%) use the center once or twice per week. There are several rooms in the center, like as kitchen bathroom and health room, of which usage frequency differs respectively. Many rural elderly want assistance from out-of-village for good maintenance and free use of these facilities.

해체주의 패션에 보여진 외형적 양식의 특성에 관한 연구 (A Study on the External Form Characteristic Depicted on the Deconstructional Fashion)

  • 김혜정
    • 디자인학연구
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    • 제13권3호
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    • pp.271-280
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    • 2000
  • 복식은 조형적 구성의 측면에서 그시대의 예술양식을 수용, 표출한다. 최근에 이르러서는 복식과 예술분야가 통합적 조형양식으로 존재하면서 동시대적 사상이나 이슈를 반영할 뿐 아니라 여타 문화현상들과 상호의존적 또는 상호수정보완적 관계를 유지하고 있다. 따라서 일련의 전위적인 디자이너들에 의해 시도되고 있는 아방가르드적 현상으로서 해체주의적 현상을 밝힘은 그동안 논의되왔던 조형양식적 측면과 미학적 측면에서의 복식을 재조명하는 그 의의가 있다. 해체주의 패션은 모더니즘적 양식을 반박하여 형식이나 구성에 있어 전위가 몰형식과 비구조화의 형태를 띄고 있으며 그것은 외형적 구조로서만이 아니라 인식론이나 내재론적 측면에서도 이성적 주체관, 현전의 형이상학, 이분법적 사고의 붕괴 둥을 의미하는 것으로 현대패션이라는 커다란 흐름을 고유함으로써 상호보완적인 역할을 수행하고 있다. 즉 양식의 이종교배, 과거양식의 인식, 복합성과 모호성, 다양한 매체의 이용 등과 같은 패션 트랜드 속에서 재해석되고 변경, 수용되어 존재하고 있다고 할 수 있다.

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장수명 공동주택 유지관리를 위한 프로세스 구축에 대한 연구 (The Development of Maintenance Process in Long-Life Housing)

  • 지장훈;김수암;윤상조
    • 한국주거학회논문집
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    • 제21권3호
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    • pp.115-124
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    • 2010
  • The environment which has been destroyed for the national growth since 1960's would seem to offer infinite resources to human, but now, the existence of human being is threatened by the development thoughtless for the environment. The World Powers have concentrated on green growth with eco-friendly resource since the end of 20th century. Korea suggested that the vision was the low carbon for green growth in 2008. It is necessary to supply Long-Life Housing in the green technology in terms of the sustainable housing development based on various life style, life cycle of the residences, the restrain remodeling and redevelopment in construction. This study is aim to establish the development of maintenance process to make continuous inhabitation of Long-Life Housing that has the separated SI for maintenance, durability, variability and remodeling. The maintenance for Long-Life Housing is very important to have more than 50~70 years the long term of life cycle in comparison with Housing. Also, the roles of manager and user are important parts in Long-Life Housing. The present maintenance for Housing is shift and repair works by the routine maintenance and demage. However, The maintenance for Long-Life Housing should consider movement and flexibility. In addition, Long-Life Housing requires the proper process of maintenance because it is different from Housing in housing concept, design and constructions stage. Therefore this study shows the efficient maintenance process for Long-Life Housing.

동북아시아 4개국의 양.한방 의료협진체계 비교 (A comparative Study on the Combined Oriental and Western Medicine(COWM) in Four Northeast Countries)

  • 문옥륜;김은영;신은영;김혜영;천희란
    • 보건행정학회지
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    • 제13권2호
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    • pp.1-22
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    • 2003
  • Since 1990s, the use of Complementary and Alternative Medicine(CAM) has been rising rapidly all of the world. In 1983, WHO recommended that the traditional medicine actively be utilized. At the end of 20th century, as chronic and intractable diseases increased in western countries, traditional medicine has attracted considerable attention. COWM shows possibilities of new approaches for these intractable diseases. Thus, we try to show our proper approach of COWM through the international comparative study. In order to fulfill the objectives, we applied the following methodology: 1) Literature review on previous study, 2) Local survey using self-administered questionnaire, and 3) FGI(Focus Group Interview) with local experts. The results were as follows : Three Asian countries, China, Korea and Taiwan, are very active in implementing COWM policy. Japan, however, has independent system of unified medicine. In regards to the combined care policy and system, China has the most advanced COWM system among four countries. In respect to combined care education, it is needed to increase the COWM education contents and the amount of cross educational curriculum. Based on the current COWM system, Chinese, Japanese and Taiwanese doctors can prescribe both oriental and western drugs. But, Korean medical law prohibits western doctors and oriental doctors from prescribing the counterpart´s medicine. So, the revision of current medical law is urgent for COWM in Korea. And when it comes to patient satisfaction, more than fifty percent responded positively in China, Korea and Taiwan. To achieve the goal of COWM ; 1) mutual understanding and recognition of COWM is essential. 2) institutional and legal support system for COWM is desperately urgent. 3) possible international collaboration and cooperation should be sought to untangle these complex cultural dilemmas.

조선조와 모더니즘의 가구디자인 비교연구 - 사상과 디자인을 중심으로 - (A Comparative Study on Furniture Design of Chosun Dynasty & Modernism - Focused on Thought & Design -)

  • 김건수
    • 한국가구학회지
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    • 제18권1호
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    • pp.1-12
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    • 2007
  • Korea has a dark age in terms of culture in the last 20th century. Korea had been struggling between the Great Powers of the world in the imperialism and had sacrifice to keep our own culture itself. Japanese imperialist's a invasion, culture liquidation by Japan, Independence from Japan, Korean war and Influence by US are major bitter historical affair after close of Chosun Dynasty in the process of modernization. Therefore Korea couldn't stay in the center of world cultural core parts and was degraded as cultural consumption country which was provided oversea culture by other countries. Then Korea couldn't develop our unique traditional idea and culture. In the meantime there are both extreme phenomena; one is expulsion of other cultures absolutely and the other is only following western culture unconditionally like trimming policy in the end of colony age. These discreet and unfiltered western culture had been influenced Korea culture over the wide range strongly and resulted in cultural colony situation to produce western imitation culture without philosophy and traditional spirit. Even though Korea has met opportunity in the culture, we called "Han Trend", no formation of own culture is main reason for psychological panic. Korea furniture design is one of parts of lost of tradition culture and typical parts in reproducing western imitation culture. As a result furniture industry's major reason for loss value as exporting industry compared to other industries result in most of the furniture products without our unique identity. This situation become more deepen unfortunately. This report would like to suggest the direction of design with global competition capability and cultural identity to boost Korean furniture design industry by comparing, analyzing and speculating between design of Chosun dynasty and philosophy of modernism in western.

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일본(日本)에서 한류변(漢流邊)의 환경부원(環境復元) 발전전략(發展戰略)(I) (Strategic Prospects of Environmental Restoration of Stream Side in Japan(I))

  • 박재현;우보명;이헌호
    • 한국환경복원기술학회지
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    • 제3권1호
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    • pp.80-90
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    • 2000
  • This study was carried out to introduce current status and development strategy for an environmental restoration of stream side in Japan, and to consider a methodology which could be effectively applied for the environmental restoration of stream side in Korea. Since the end of 20th century, the native ecology and landscape of Japan remained only a limited areas such as stream side, water side and forest areas. Therefore, recently the works of forest conservation and erosion control of environmental restoration on stream side tended to increased. The strategic prospects of environmental restoration in Japan were summarized as follows : 1. From the ecological point of view, we have to develop a certain method and technology in construction of forest conservation and erosion control to prevent environmental problem from erosion control works. 2. We have to restore not only a continuity of stream side forest from a primitive area to an estuary but also the stream side forest to preserve and restore a stream side vegetation on a primitive watershed areas. 3. We have to improve a method of construction or removal of a structure which were constructed in the stream to restore a water side environment and an interaction system for an integration on a forest land, stream, and erosion control. Additionally, we have to establish an integrated evaluation method and an enforcement system after investigation of influences on natural environment, stream, and forest etc. 4. We have to conduct an integrated research to investigate the ecosystem of stream side, and construct environmentally friendly water park and erosion control park which considered natural environment and its landscape. Additionally, we need to introduce and adopt a natural style stream construction method to restore a water side areas.

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도시형한옥 밀집지역의 보존및 도시재생에 관한 연구 -대구광역시 서성동을 중심으로- (Conservation of Hanok Houses and Urban Regeneration -a case study of Sosongdong in Taegu City-)

  • 황보봉
    • 한국산학기술학회논문지
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    • 제15권6호
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    • pp.3944-3949
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    • 2014
  • 본 논문은 대구광역시 중구 서성동 일대의 도시형한옥 밀집지역을 대상으로 물리적 공간적 변화를 파악하고자 했으며, 특히 이 지역이 한옥주택들이 밀집된 지역으로서의 동질성과 연속성을 상실하고 해체되어 가는 그 과정을 살펴보고 체계적으로 이해하고자 했다. 도시환경을 열악하게 전환시키는 물리적인 행위 그리고 이에 연계된 행태적 변화는 기존 전통공간 구조의 파괴를 가져오고 결국 공존할 수 없는 상황이 연출되게 된다. 이 논문은 도시재생을 위한 전략으로서 한옥보존의 가치를 재고하고 구체적인 실천전략을 마련하기 위해 법적 제도적 장치가 조성되지 않은 대구시 서성동의 사례를 중요한 학술자료로 구축하고자 했다. 역사적 환경에서 도시한옥이 지니고 있는 현대적 매력은 역사적 연속성을 유지하는 동시에 도시재생을 위한 유효한 전략으로 판단된다.

인천국제공항건설 사업관리 경험 (Introduction to CM Experience from Incheon International Airport (IIA) Construction Project)

  • 박대원
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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    • pp.20-25
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    • 2004
  • 2003년 7월 18일 인칠공항공사는 동북아의 중추공항(Hub-Airport)건설을 목표로 단계적으로 추진되는 인천국제공항 2단계건석사업에 필요한 전문적인 사업관리 기술을 지원 받기 위하여 KIDS 컨소시엄(건원, ITM, 도화, 공간으로 구성된 컨소시엄)과 2단계 건설사업관리 기술지원용역계약을 체결하였다. 2단계 건설사업은 250만 평의 부지조성, 제3활주로, 계류장,원격탑승동, 무인자동열차, 고속수하물처리시설, 화물터미널. 등과 필요한 시설물을 2008년 말까지 완료하는 것으로 계획되어 있으며 CM계약자는 기 구축된 공항공사의 각종 사업관리 Tool을 이용하여 공정관리를 포함한 종합사업관리, 건축/전럭시설의 설계감리. IAT/BHS 등의 설계관리. 품질 및 시운전관리 등의 업무에 국내외 전문인력을 공항공사의 사업관리 조직에 투입하여 공사직원들과 함께 사업목표 달성을 위해 매진하고 있다. 본 고에서는 인천공항공사에서 수행하고 있는 건설사업관리사례를 주요업무 중심으로 소개해 보고자 한다.

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