Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management)
Online ISSN : 2185-6540
ISSN-L : 2185-6540
Volume 68 , Issue 1
Showing 1-6 articles out of 6 articles from the selected issue
Paper (In Japanese)
  • Satoshi TOI, Koji SAKAMOTO
    2012 Volume 68 Issue 1 Pages 1-14
    Published: 2012
    Released: January 20, 2012
    JOURNALS FREE ACCESS
     "Access Road Construction Projects" are implemented in 35 districts in Kitakyushu-City. In this project, the representatives of residents and the construction bureau of the city cooperatively consult on the routes and structures of access roads and advance the project. Consensus was built in most districts where the conference concerning this project was established. From this fact, it is thought that the key point of consensus building depends on whether the conference is established or not, and that the physical conditions and social conditions such as community of the districts affect the establishment of conferences. In this study, after the characteristics of 35 districts are analyzed, it is considered how the internal characteristics of district and the external support system influent the establishment of conference of the districts, and the weight of conditions for forming the base of consensus building are analyzed.
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  • Satoshi TOI, Yoshitaka KAJITA, Shuichirou NISHIKAWA
    2012 Volume 68 Issue 1 Pages 15-29
    Published: 2012
    Released: January 20, 2012
    JOURNALS FREE ACCESS
     This study aims to find an effective removal method of illegal parking bicycles based on the analysis on the numerical change of illegal bicycles. And then, we built the time and space quantitative distribution model of illegal parking bicycles after removal, considering the logistic increase of illegal parking bicycles, several behaviors concerning of direct return or indirect return to the original parking place and avoidance of the original parking place, based on the investigation of real condition of illegal bicycle parking at TENJIN area in FUKUOKA city.
     Moreover, we built the simulation model including above-mentioned model, and calculated the number of illegal parking bicycles when we change the removal frequency and the number of removal at one time. The next interesting four results were obtained.
    (1) Recovery speed from removal the illegal parking bicycles differs by each zone.
    (2) Thorough removal is effective to keep the number of illegal parking bicycles lower level.
    (3) Removal at one zone causes the increase of bicycles at other zones where the level of illegal parking is lower.
    (4) The relationship between effects and costs of removing the illegal parking bicycles was clarified.
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  • Takeshi NAKANO
    2012 Volume 68 Issue 1 Pages 30-42
    Published: 2012
    Released: January 20, 2012
    JOURNALS FREE ACCESS
     The aim of this paper is to interpret Charles Horton Cooley's "Theory of Transportation", situating it in his interactionist sociology of communication and social process. Cooley defines transportation as a spatial and physical form of communication. He also develops a interactionist theory of valuation and articulates that value as an end of action is shaped an d transformed by communication and interaction. These insights suggest that transportation as a form of communication will change and develop economic society through transforming personal desires and values so as to change behaviours. Cooley's theory implies that an interactionist approach is useful for understanding the subjective side of phenomena of transportation.
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  • Hideo YAMANAKA
    2012 Volume 68 Issue 1 Pages 49-58
    Published: 2012
    Released: January 20, 2012
    JOURNALS FREE ACCESS
     Problems of shared use of bicycles and pedestrians on sidewalks have been an important issue for cycling policy promotion in Japan. Several studies on evaluation methods of shared use have been carried out, but it remains no appropriate index which can be used operationally in planning process. The aim of this study is to develop a method of evaluation of level-of-service for the shared use sidewalks using hindrance events index which newly considers the gap width in meeting and passing of cycling and pedestrians. This index can be estimated only by traffic volume, velocity, width of sidewalks which can be obtained in usual traffic observation. In conclusion, the author shows the appropriate indices which can explains conflicts behavior and unsafe sense of street users, and show the present situation of necessity of separation of existing streets in Japan by analyzing the ratio of street miles by the LOS.
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  • Daisuke MURAKAMI, Morito TSUTSUMI
    2012 Volume 68 Issue 1 Pages 59-69
    Published: 2012
    Released: February 20, 2012
    JOURNALS FREE ACCESS
     Most of socio-economic data are provided after aggregated in specific spatial units. As the result, the differences among the spatial units of such data often complicate their analysis. The conversion of spatial units, referred to as areal interpolation, is often used to address this problem. Various areal interpolation techniques have been proposed, and some considers spatial autocorrelation. However, such techniques cannot be implemented using basic statistical packages. In this study, we propose an areal interpolation technique that takes into account spatial autocorrelation using eigenvector spatial filtering. The proposed technique is possible to implement using basic statistical packages. This technique also makes extension easy; for example, geographically weighted regression is easily combined with our technique. The proposed technique is applied to a case study of the areal interpolation of the aging ratio.
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Technical Note (In Japanese)
  • Satoshi KUBOTA
    2012 Volume 68 Issue 1 Pages 43-48
    Published: 2012
    Released: January 20, 2012
    JOURNALS FREE ACCESS
     In this research targeting road construction projects, schemes were investigated for utilizing three-dimensional (3D) data distributed in accordance with ISO (Internatio nal Organization for Standardization) and produced by 3D computer-aided design (CAD) software based on the concept of product data models. First, existing literature was classified by work stage as the context for utilizing 3D data. Next, the establishment of standards for exchanging 3D data, revising relevant systems, constructing road data models, realizing work process models, developing 3D CAD engines, and providing 3D data utilization environments are discussed, both as measures that should be undertaken and as future research topics for promoting the utilization of 3D data. Finally, the potential for utilizing 3D data in road construction projects by local government is examined, and the items to be implemented for this purpose are summarized.
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