• The Journal of the Korea institute of electronic communication sciences
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• v.2 no.1
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• pp.52-61
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• 2007

The u-City is next generation IT-City which is to enhance the quality of life and convenience of life base on merger up-to-date communication infrastructure with u-IT services. To realize u-City, intelligent building is built for citizens to make a space of comfortable life. The intelligent building is possible to be constructed by communication infrastructure for various U-services. This paper mentions the ranges of communication infrastructure and shows how to construct it each range through regulation, law and technical. Lastly, the topics are suggested to build successfully u-City constructions in Korea.

• Journal of Construction Engineering and Project Management
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• v.2 no.1
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• pp.27-34
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• 2012

Recent requirements in component management of building systems have focused on the requirement for improving methods and metric tools to support component condition assessment and appropriate decisions for infrastructure owned facilities. Although engineers and researchers have focused on developing methodologies for component assessment in recent years but there is not enough attention dedicate to facilities and components that have been constructed. This paper is a literature study of scientific papers within the topic of component condition index system (CCIS) in the period 1976 to 2009. Infrastructure component condition index had existed for some 40 years. The purpose of this paper is to provide an overview of CCIS to identify the suitable method for component condition assessment during its service life. This paper finds that the focus of CCIS, surveyed in several aspects during the 40 years that have been investigated, from technology to measurement and from assessment function to component maintenance as an integrated part of the infrastructure component management. This study offers help to researchers in understanding the selection of an appropriate method for component condition assessment in building and non-building systems.

• Journal of Information Management
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• v.35 no.3
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• pp.1-28
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• 2004

The purpose of this paper is to suggest guidelines for building up an integrated information network(IIN) model that enable to enhance production, flow and use of knowledge and information. The IIN consists of five areas of key infrastructure, such as, education, R&D, labor market, school-industry cooperation, and lifelong education information infrastructure. Based on the analysis of current situations and problems of each information infrastructure, this paper raises variety of issues and solution for the IIN model. Directions for building up the IIN includes both information base infrastructure and information support infrastructure.

• International conference on construction engineering and project management
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• 2024.07a
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• pp.119-126
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• 2024

After increasing to 84 trillion yen in FY1992 following the burst of Japan's economic bubble, construction investment in Japan fell to 42 trillion yen in FY2010 in the wake of the global financial crisis. It subsequently recovered to 67 trillion yen in FY2022, driven largely by demand for reconstruction after the Great East Japan Earthquake and Abenomics. On the other hand, the sustainability of Japanese construction is under threat due to a declining population and a decrease in the number of construction workers. A breakdown in sustainability is not only detrimental to the population, but also leads to delays in disaster recovery for Japan, which is a disaster-prone country. It is therefore necessary to analyze the status and trends in building construction in recent years to clarify the future sustainability of building construction in Japan. This study reviews basic information on buildings constructed in recent decades using raw data from the Statistical Survey of Building Starts, a statistical survey undertaken by the Japanese government, and analyzes statistical data such as number of buildings, location, building type, total floor area, construction cost, and construction duration. Finally, the sustainability of building construction in Japan is discussed.

• Earthquakes and Structures
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• v.15 no.1
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• pp.97-111
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• 2018

Buildings featuring a transfer structure can be commonly found in metropolitan cities situated in regions of lower seismicity. A transfer structure can be in the form of a rigid plate or an array of deep girders positioned at the podium level of the building to support the tower structure of the building. The anomalous increase in the shear force demand on the tower walls above the podium is a major cause for concern. Design guidance on how to quantify these adverse effects is not available. In this paper a simplified method for quantifying the increase in the shear force demand on the tower walls is presented. In view of the very limited ductile nature of this type of construction the analysis presented herein is based on linear elastic behaviour.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2015.05a
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• pp.230-231
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• 2015

Recently, although researching and developing of safety and maintenance on domestic infrastructure facilities in KOREA are important, there has been very little research regarding on a comprehensive and integrated survey of actual condition. Therefore this study asserts the necessity of the survey process of actual condition by period planning(short-term, middle-term, long-term). The purpose of this study is to investigate current situation and to suggest the whole process method, and to establish survey process of actual condition on domestic infrastructure facilities.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.14 no.2
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• pp.119-140
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• 2003

The purpose of this paper is to suggest guidelines for building up an integrated information network(IIN) model that enables to enhance production, flow and use of knowledge and information. The IIN consists of four areas of key infrastructure, such as, education, labor market, school-industry cooperation, and lifelong education information infrastructure. Based on the analysis of current situations and problems of each information infrastructure, this paper raises variety of issues and solutions for the IIN model. Directions for building up the IIN includes both information base infrastructure and information support infrastructure.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.11
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• pp.259-272
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• 2019

Steel-concrete single-leaf blast-resistant doors are protective structures consisting of a steel box and reinforced concrete slab. By the domestic blast-resistant doors, the structure is not designed efficiently because few studies have examined the effects of variables, such as the blast pressure, rebar ratio, and steel plate thickness on the structural behavior. In this study, the structural behavior of the doors was analyzed using the FE method, and the support rotation and ductility ratio used to classify the structural performance were reviewed. The results showed that the deflection changes more significantly when the plate thickness increases than when the rebar spacing is a variable. This is because the strain energy absorbed by the door is reduced considerably when the plate thickness increases, and as a result, the maximum deflection becomes smaller. According to a comparison of the calculated values of the support rotation and the ductility ratio, the structural performance of the doors could be classified based on the support rotation of one degree and ductility ratio of three. On the other hand, more explosion tests and analytical studies will be needed to classify the damage level.

• Ecology and Resilient Infrastructure
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• v.4 no.1
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• pp.1-2
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• 2017

• Ecology and Resilient Infrastructure
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• v.3 no.3
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• pp.153-155
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• 2016