• Title/Summary/Keyword: The City Structures

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부산과 독일 함부르크간 지역혁신체제 비교

  • 한성안
    • Journal of Technology Innovation
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    • v.9 no.2
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    • pp.34-55
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    • 2001
  • With increasing globalization, a proper policy for global inter-city networking strongly required, which presumes the study on the heterogeneity among regional innovation systems. While surveying the research results of the Evolutionary Economics, 1 stress that regional systems of innovation differ in technological capacities, industrial structures, institutional arrangements and socio-cultural features. 1 make the empirical investigation based on the data of Busan and Hamburg, making clear the regional specificities among regional innovation systems. The results show that regional systems of innovation in Busan and Hamburg are quitely asymmetric. They suggest also the limitation of neo-classical assumption on the ‘homogeneous production function’ and that policy-makers in regions should make the policy for ‘global inter-cities networking’, based on perspectives of regional heterogeneity.

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Community-based Knowledge Networks: an Australian case study (커뮤니티 기반 지식 네트워크: 호주 사례 연구)

  • Bendle, Lawrence J.
    • Knowledge Management Research
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    • v.12 no.2
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    • pp.69-80
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    • 2011
  • This paper reports on a structural view of a knowledge network comprised of clubs and organisationsexpressly concerned with cultural activities in a regional Australian city. Social network analysis showed an uneven distribution of power, influence, and prominence in the network. The network structure consisted of two modules of vertices clustered around particular categories of creative arts and these modules were linked most frequently by several organisations acting as communication hubs and boundary spanners. The implications of the findings include 'network weaving' for improving the network structure and developing a systemic approach for exploring the structures of social action that form community-based knowledge networks.

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A Conceptual Study of Rail Renaissance and Sustainability (철도 르네상스와 지속가능성)

  • Moon Dae-Seop
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.1646-1651
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    • 2004
  • This primary study describes some proposition of restoration and rehabilitation of rail station and station impact area for efficient use. Therefore, I reviewed the functions and roles about rail station and other railway facilities related with urban structures and development, and also analysed the case studies about realignment of rail station, and then, suggested primary management plan of efficient railway installation. This study has some bounds and limits owing to the descriptive reviews but not detailed analyses. Hereafter, I am planning to consider the management plan for efficient railway installation use as coinciding with specific city characteristic and comprehensive plan such as rearrangement of the station.

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A Primary Study on the Location and Size of Railway Station Facilities (철도 역시설의 입지와 규모에 관한 기초 연구)

  • 문대섭;이경철;정병현
    • Proceedings of the KSR Conference
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    • 2002.05a
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    • pp.116-121
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    • 2002
  • This primary study has some bounds md limits owing to the descriptive reviews but not detailed analyses. However, 1 tried to do the comparative analyses and case studies about location and size of rail station for future efficient use of spatial structure. Therefore, I reviewed the location of railway station and some design standards of railway station facilities by type (high speed rail, conventional rail and urban rail), and also, suggested future direction for rail station as the core of city development relating with urban structures and human settlement system reformation.

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The contiguity ground and structures sinkage analysis of in city excavation (도심지 굴착공사에 따른 인접지반 및 구조물 침하원인 분석)

  • Seong, Joo-Hyun
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.09a
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    • pp.1301-1306
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    • 2009
  • Recently, urban excavations are one of most frequent geotechnical work according to construction of a high rise building and subway. These kind of excavation affect to a adjacent ground or structure and it can trigger various severe accidents. Generally, the ground is closer to the excavation site, the deformation become larger. In this study, special ground settlement case due to adjacent ground excavation is presented and a cause of deformation is examined by various geotechnical exploration, lab-testing and numerical analysis.

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Turbulence effects on surface pressures of rectangular cylinders

  • Li, Q.S.;Melbourne, W.H.
    • Wind and Structures
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    • v.2 no.4
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    • pp.253-266
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    • 1999
  • This paper presents the effects of free-stream turbulence on streamwise surface pressure fluctuations on two-dimensional rectangular cylinders. Particular attention is given to possible effects of turbulence integral scale on fluctuation and peak pressures. The mean, standard deviation, peak pressure coefficients, spectra and cross-correlation of fluctuating pressures were measured to investigate the nature of the separation and reattachment phenomenon in turbulent flows over a wide range of turbulence intensity and integral scale.

Force monitoring of Galfan cables in a long-span cable-truss string-support system based on the magnetic flux method

  • Yuxin Zhang;Xiang Tian;Juwei Xia;Hexin Zhang
    • Structural Monitoring and Maintenance
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    • v.10 no.3
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    • pp.261-281
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    • 2023
  • Magnetic flux sensors are commonly used in monitoring the cable force, but the application of the sensors in large diameter non-closed Galfan cables, as those adopted in Yueqing Gymnasium which is located in Yueqing City, Zhejiang Province, China and is the largest span hybrid space structure in the world, is seldom done in engineering. Based on the construction of Yueqing Gymnasium, this paper studies the cable tension monitoring using the magnetic flux method across two stages, namely, the pre-calibration stage before the cable leaves the rigging factory and the field tension formation stage of the cable system. In the pre-calibration stage in the cable factory, a series of 1:1 full-scale comparative tests were carried out to study the feasibility and relability of this kind of monitoring method, and the influence on the monitoring results of charging and discharging voltage, sensor location, cable diameter and fitting method were also studied. Some meaningful conclusions were obtained. On this basis, the real-time cable tension monitoring system of the structure based on the magnetic flux method is established. During the construction process, the monitoring results of the cables are in good agreement with the data of the on-site pressure gauge.The work of this paper will provide a useful reference for cable force monitoring in the construction process of long-span spatial structures.

An Analysis on the Change of Spatial Structures in the Korean Villages of China - The Case of Jang-je Village in Yongjoung City (중국 조선족 촌락의 공간구조 변화 분석 - 용정시 장재촌을 대상으로 -)

  • 김인학;장태현
    • Journal of the Korean Institute of Landscape Architecture
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    • v.31 no.1
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    • pp.54-65
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    • 2003
  • The results of the research were as follows: The entire space of the village was based on natural formation in its initial formation stage. The traditional location conditions and environment were equipped with the possibility and conditions for the development of the village. Spatial boundaries were mostly divided by natural topography. The quantify of lots diminished in spatial structural factors, while the division of roads by hierarchy in terms of size became explicit. Alleys, as the minimum hierarchial nit, were degraded. The residence unit was focused on economic efficiency. Communal use facilities showed an external relations trend as central facilities. The land, unit residence and communal facilities approached the high hierarchial roads. The communal facilities showed relatively higher independence compared to the residence units. The spatial structural changes followed traditional life style in the initial stage of village formation; however, social elements mainly impacted on the changes. Since reform opening, economic elements were major causes of changes, while construction conditions, life style, and awareness of structures impacted upon the changes. Thus, the economic element is the major change element in the Korean Villages, even though other elements will also become diverse.

Geotechnical problems in flexible pavement structures design

  • Mato G. Uljarevic;Snjezana Z. Milovanovic;Radovan B. Vukomanovic;Dragana D. Zeljic
    • Geomechanics and Engineering
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    • v.32 no.1
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    • pp.35-47
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    • 2023
  • Deformability of road pavements in the form of ruts represent a safety risk for road users. In the procedures for dimensioning the pavement structure, the requirement that such deformations do not occur is imperatively included, which results in the appropriate selection of elements (material, geometry) of the pavement structure. Deformability and functionality, will depend of the correct design of pavement structure during exploitation period. Nevertheless, there are many examples where deformations are observed on the pavement structure, in the form of rutting at parts of the road with relatively short length, realised in the same climatic and the same geoenvironmental conditions. The performed analysis of deformability led to the conclusion that the level of deformation is a function of the speed of traffic. This effect is observed on city roads, but also outside of urban areas at roads with speed limits are significant, due to the traffic management, traffic jams (intersections, etc.). Still, the lower speed cause greater deformations. The authors tried to describe the deformability of flexible pavement structures, from the aspects of geotechnical problems, as a function of driving speed. Outcome of the analysis is a traffic load correction coefficient, in terms of using the existing methods of flexible pavement structures design.

A Study on the Nature of the Expression of Construction Fence Screens to enhance the Images of Cities - Focus on the fence screens of Seoul - (도시이미지 향상을 위한 공사 가림막 표현특성에 관한 연구 - 서울시 공사 가림막을 중심으로 -)

  • Oh, Sang-Min;Han, Young-Ho
    • Korean Institute of Interior Design Journal
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    • v.20 no.3
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    • pp.259-266
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    • 2011
  • Today, construction fence screens which were understood simply as structures of separating people from the dangers of construction sites have evolved into landmarks to enhance the images of Cities. Now, construction fence screens should have the function as landmarks stimulating people's sensibility through providing aesthetic values as well as the function of protecting people from the dangers of fields of construction. For this reason, this study tried 1) to show the relationships among these 4 classifications. is 4 realms of Human Beings - Cultural - Ecological - Digital in the expression methods of the construction fence screens of Seoul and 2) to simplify the characteristic elements of construction fence screens by way of extracting with Ecology, Installation Art, Symbolic, Commercial Expression. This study examined whether or not the construction fence screens of Seoul were playing the role as landmarks stimulating people's sensibility with sustainable improvement to the environment of Seoul as public design structures, by investigating some of the construction fence screens of Seoul. Also through analyzing the diversity of expression methods of the construction fence screens of other local governments as well as those of Seoul, we hope that they will be the public structures for enhancing the images of Cities.