• 제목/요약/키워드: Top-Down Construction

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초기 사업단계에서 표준공정모델을 이용한 가스 플랜트 공사의 개략적 공사기간 산정 (Approximate Estimating of Plant Construction Duration Using a Standard Schedule Model)

  • 문성우;박상천;권기남
    • 한국건설관리학회논문집
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    • 제10권2호
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    • pp.26-33
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    • 2009
  • 건설사업의 단계별 진행에 따라서 공정 스케줄의 정확도에 대한 요구수준이 달라진다. 본 연구의 목적은 건설사업의 초기단계에서 활용할 수 있는 표준공정모델을 제시하여 신속하게 전체 개략공기를 산정하는 체계를 제시하는 것이다. 표준공정모델을 적용하여 작업공정을 모듈화하고, Top-down 식 접근으로 상위레벨에서 공정모듈 간 작업연관관계를 분석함으로써 신속하게 프로젝트의 공사기간을 산정할 수 있다. 표준공정모델의 타당성을 검증하기 위해서 각 공정모듈의 작업기간이 일정하다고 가정하고, 가스 플랜트 공정에 대하여 적용시켰다. 그 결과 표준공정모델을 사용하여 계산한 개략 공사기간과 공정관리 툴을 사용한 상세 공사기간은 -3.1% 부터 +15.0%까지의 범위에서 차이를 가졌다. 이러한 결과는 제시된 표준공정모델이 일정 수준의 신뢰성을 가지는 공정 스케줄 정보를 제공하고, 사업기획과 타당성 분석 등 건설사업의 초기단계에서 신속하게 의사결정을 도울 수 있다는 것을 보여준다.

BUSINESS PROCESS ENGINEERING IN THE CONSTRUCTION INDUSTRY

  • Brenda L. P. Yip;Ping Yung
    • 국제학술발표논문집
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    • The 3th International Conference on Construction Engineering and Project Management
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    • pp.622-627
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    • 2009
  • Business process engineering (BPE) is a top-down management approach for increasing efficiency and productivity through radical and fundamental changes to the business processes of the organization. BPE requires firms to initially develop a model of the existing business processes of the firm to distinguish functional tasks from processes used for coordinating inputs, activities and outputs. The model is used for understanding the business processes in the organization and to simulate the effect of changes to the processes. The model can also be used to justify business processes, which involves assessing whether the business process provides value to the customer in its current configuration. Justification requires a careful examination of the key business processes used by the firm to identify systemic shortcomings in the process and to create a new business process to produce greater efficiency. BPE also considers automating as many business processes as possible to increase operational efficiency and the integration of business process tasks. The construction industry has been slow to adopt BPE because of its project approach in which a major firm contracts with various functional service providers and regards each project as unique. The industry focuses on functional task efficiency rather than business process efficiency. There is no formal methodology or criteria for determining whether a business process is effective for a construction firm in its current configuration. The use of performance measures such as costs, task duration times or other metrics can be useful in evaluating the effectiveness of an existing business process and for modeling the possible outcome of a fundamental and radical change to the process.

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Steel-concrete mixed building technology at the ski jump tower of Innsbruck, Austria

  • Aste, Christian;Glatzl, Andreas;Huber, Gerald
    • Steel and Composite Structures
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    • 제3권2호
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    • pp.141-152
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    • 2003
  • The ski jump in Innsbruck known for the famous annual New Year "Four-ski-jump-tournament" has been fully renewed. The original jumping tower (built for the 1976 Olympic winter games) was fully pulled down and a new landmark similar to a lighthouse has been erected located on a small hill at the border of the city. Zaha Hadid(London) won the international architectural competition for this significant building. The constructional realisation has been ordered from Aste Konstruktion and has been finally honoured with the Austrian state award for consulting 2002. After a very strict timetable the building was already handed restaurant at the top.

한국어 명사 의미 계층 구조 구축 (Construction of A Semantic Hierarchy of Korean Nouns)

  • 조평옥;옥철영
    • 한국정보과학회 언어공학연구회:학술대회논문집(한글 및 한국어 정보처리)
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    • 한국정보과학회언어공학연구회 1997년도 제9회 한글 및 한국어 정보처리 학술대회
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    • pp.129-135
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    • 1997
  • 한국어 명사들을 의미별로 분류하여 계층화시킨 '한국어 명사 의미 계층 구조'는, 한국어 문장을 처리할 때 한국어의 의미 정보를 제공할 수 있는 매우 중요한 정보들 중의 하나이다. 본 논문에서는, 국어 사전의 명사에 대한 뜻풀이말을 이용하여 bottom-up 방식으로 '한국어 명사 의미 계층 구조'를 구축하였다. 본 논문에서 구축한 '한국어 명사 의미 계층 구조'는, tree가 43개, node가 12,833개, terminal node가 10,347 개이며, 깊이가 17인 하나의 forest이다. 이것의 제 1, 2 계층(level 1,2)에서의 분류 형태는 top-down 방식에 의한 기존의 분류들과 매우 다른 모습인 반면에, 제 3 계층 이하에서의 분류 형태는 의미소성(意味素性)에 의한 기존의 분류와 거의 일치하는 모습을 나타낸다.

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파라메트릭 디자인 방법론을 활용한 한옥 목구조부재의 BIM 설계 프로세스 연구 (A Study on the BIM-based Design for the Elements of Wooden Structure of Korean Traditional Buildings Through a Parametric Design Methodology)

  • 박정대
    • 한국CDE학회논문집
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    • 제16권2호
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    • pp.104-113
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    • 2011
  • With the rising social interest in the sustainable life, demands are growing for Hanok, as a viable alternative to modernized architecture of Western origin. However, even Hanok is gaining popularity among the general public, its design and construction are still a minor practice. Aiming to build an information system of Hanok, this research proposes a new design process for traditional architecture, utilizing a parametric design methodology. This process, based on the understanding of tectonic joints and spatial composition of our traditional architecture, defines a parametric relationship among the structural elements that compose Hanok. The research uses Gehry Technologies' Digital Project and Autodesk Revit Architecture to apply a concurrent parametric design methodology, approaching the project in both bottom-up and top-down to present a new design process for Hanok elements.

A Study on Building the Regional Cluster: The Case of Fire and Emergency Industrial Cluster in Samcheok-si

  • Lee, Dong-Kyu;Yang, Gi-Geun
    • International Journal of Contents
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    • 제5권3호
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    • pp.57-64
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    • 2009
  • Korea has relied on top down development method, in which companies, research and education institutions move into the industrial complexes established by the government. However, to improve local competitiveness, the paradigm is shifting from the government initiated industrial complex to the clusters based on the cooperative network of the region. Representative case is 'Samcheok-si Fire & Emergency industry cluster construction project' that begun in 2007. AHP technique analysis results on first-stage showed that priority was on policy and network elements, and the results of second-stage analysis show that priority was on Policy incentives to internationalize the cluster and strengthen link,. Cluster branding, Sharing of organizational culture to cope with changes in environment, Creation of group learning culture. The subject of this research is limited to Samcheok-si's the Fire and Emergency Industry cluster formation project. Therefore, the research area and standard should be expanded to increase generality in further researches.

듀티 사이클 MWSN 에서 데이터 집계를위한 개선 지연 효율적인 스케줄링 체계 (An Improvement Delay Efficient Scheduling Scheme for Data Aggregation in Duty-Cycle MWSNs)

  • ;김문성;추현승
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2020년도 추계학술발표대회
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    • pp.175-177
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    • 2020
  • In multi-channel wireless sensor networks, optimizing data aggregation delay without any channels and timeslots conflicts has been concerned these days. The aggregation delay can be reduced by using different aggregation tree construction methods or scheduling in different methods in bottom-up or top-down manners. In this paper, we propose a new way of constructing aggregation tree purposing to decrease the total aggregation delay. The result shows that our proposed scheme can improve up to 64% comparing with state-of-the-art schemes.

건설조직을 위한 상향식 접근방식의 지식관리시스템 구축 (A Bottom-up Approach Based Knowledge Management System for Construction Organizations)

  • 박문서;안창범;이현수;이규성
    • 한국건설관리학회논문집
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    • 제10권2호
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    • pp.3-13
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    • 2009
  • 조직의 지속가능한 경쟁력 확보를 위한 지식경영(Knowledge Management)의 중요성에 대한 인식은 건설산업 내에서도 높아져 가고 있다. 하지만, 이러한 지식경영을 실행하기 위해 도입된 IT 도구들의 활용도나 효과성은 만족스럽지 않은 수준에 그치고 있고, 이는 전체 지식경영 성과에 대한 불만족으로 이어지고 있다. 이에 본 연구에서는 현재 한국 건설산업에서의 지식경영 사례에 대한 조사를 토대로 현재의 하향식 지식관리 방법론과 이를 반영하는 지식관리시스템이 갖는 문제점을 분석하고, 이러한 문제점을 개선할 수 있는 상향식 지식관리 방법론을 제시하고, 이를 시스템으로 구현하고자 한다. 또한 본 연구에서는 제안된 시스템과 기존 사례의 지식관리시스템과의 사용성 비교를 통해 그 사용성과 효과성에 대한 검증을 하고자 한다.

A Construction Method of Expert Systems in an Integrated Environment

  • Chen, Hui
    • 한국지능정보시스템학회:학술대회논문집
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    • 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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    • pp.211-218
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    • 2001
  • This paper introduces a method of constructing expert systems in an integrated environment for automatic software design. This integrated environment may be applicable from top-level system architecture design, data flow diagram design down to flow chart and coding. The system is integrated with three CASE tools, FSD (Functional Structure Diagram), DFD (Data Flow Diagram) and structured chart PAD (Problem Analysis Diagram), and respective expert systems with automatic design capability by reusing past design. The construction way of these expert systems is based on systematic acquisition of design knowledge stemmed from a systematic design work process of well-matured developers. The design knowledge is automatically acquired from respective documents and stored in the respective knowledge bases. By reusing it, a similar software system may be designed automatically. In order to develop these expert systems in a short period, these design knowledge is expressed by the unified frame structure, functions of th expert system units are partitioned mono-functions and then standardized components. As a result, the design cost of an expert system can be reduced to standard work procedures. Another feature of this paper is to introduce the integrated environment for automatic software design. This system features an essentially zero start-up cost for automatic design resulting in substantial saving of design man-hours in the resulting in substantial saving of design man-hours in the design life cycle, and the expected increase in software productivity after enough design experiences are accumulated.

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선암사 '대각국사중창건도'연구 -제작시기와 배경을 중심으로- (A Study on 'Monk Daegwak's Joongchanggundo' at Seon-Am Temple -Mainly about the Time of Drawing and Background-)

  • 홍병화
    • 건축역사연구
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    • 제21권3호
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    • pp.55-72
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    • 2012
  • There is a temple drawing called Monk Daegwak's Joongchanggundo at Seon-Am Temple of which the time of creation is unknown. This drawing shows the details of Seon-Am Temple and surrounding areas well, which helps to understand the construction of Seon-Am Temple and other small mountain temples. The records on the top also describe the surrounding landscape in the Fengshui aspect, and describes the number of buildings at Seon-Am Temple. According to the construction style that gives clues about the age of this drawing, the time range can be narrowed down in order to approximate the age of this drawing through the Buddhist trends of Seon-Am Temple. In the results, it was estimated that the drawing dates back to the time when Seon-Am Temple flourished in the mid-18th Century as it's competition with the temple of Songgwang actually began. Buddhism considers the relationship between teacher and student as the most important and the principals were delivered through this relationship. Therefore, the activities to increase the connection between monks and this drawing were created in order to indicate the atmosphere of the Seon-Am Temple of the time.