Theory and Applications of GIS
Online ISSN : 2185-5633
Print ISSN : 1340-5381
ISSN-L : 1340-5381
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Volume 6, Issue 2
Displaying 1-9 of 9 articles from this issue
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  • An Analysis of the Spatio-Temporal Structure of Urban Air Temperature in the Southern Part of Kanto Plain
    Yujiro HIRANO, Yoichi KAYA
    1998 Volume 6 Issue 2 Pages 1-10
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_1
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    This paper aims to analyze the spatio-temporal structure of urban air temperature distribution in the southern part of Kanto Plain using GIS. Temperature is affected by many factors such as the ocean, land cover and topography. To estimate the contribution of the each factor statistically, multi-regression analysis is applied to air temperature data (1984-1993) of 96 meteorological stations in the study area. From the diurnal and seasonal variations of the estimated coefficients of those factors, spatio-temporal structure of the air temperature distribution is revealed. Finally, urban heat island phenomena in the daytime and nighttime is visually demonstrated using pixel-field data of air temperature generated based on the results of multiple regression analysis.
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  • GIS-Aided Benefit Evaluation System for Urban Railway Improvements : Focusing on the Hedonic Approach
    Myoung Young PIOR, Eihan SHIMIZU, Hideo NAKAMURA
    1998 Volume 6 Issue 2 Pages 11-22
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_11
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    This study specially focuses on the hedonic approach to evaluate the benefits of urban railway improvements. In the GIS environment, the information for the hedonic approach can be efficiently collected and generated. A unique conditions unit that is useful to statistical analysis can be easily generated by the overlay function. The benefits can be estimated in real locations undertaking improvement gains. With such advantages, "GIS-Aided Benefit Evaluation System" has been developed as a flexible and useful tool for supporting the hedonic approach in this study. As mathematical methodologies for the hedonic approach, the Box-Cox functional form that avoids prior restrictions is adopted to determine the best hedonic land price function. The general inverse matrix is also used to cope with multi-collinearity associated with the hedonic price function. The potentiality of the proposed system for practical application has been verified by application to the Joban New Line.
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  • Global Restoration of Topographic Contour Image by Using Extended Voronoi Diagram
    Takashi WATANABE, Zen-ichi YAMAMOTO, Hideshi ABE, Akio KIMURA
    1998 Volume 6 Issue 2 Pages 23-31
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_23
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    It has been strongly requested to get automatically a precise digital elevation model from a topographic contour image. But, because of overlapping other symbols, the image usually includes many broken contours. To connect these correctly, a global restoration technique considering states of adjacent contours is needed. In this paper we propose a new global restoration method using an extended Voronoi diagram that produces a relationship graph of adjacent contours. Based on an idea of reference contours, it determines pairs of broken contours to be connected and interpolates their gaps with spline curves. It can satisfactorily restore broken contours that have been considered difficult to connect.
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  • Probability of Losing Segment of Building at Small Scales
    Akihiro TERAKI
    1998 Volume 6 Issue 2 Pages 33-39
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_33
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    This paper deals with vector to raster conversion. Segments of buildings are lost on maps at small scales. It comes from raster output devices. This paper proposes a model of segments on raster devices and estimates the probability of lost segments. Then it calculates the probabilities for 1-ken (Japanese traditional unit of length) and data of buildings in Hyogo Prefecture. The result shows that the current standard of map drawing needs revises for the use of urban planning.
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  • A Study on Configurations of Intranet Geographic Information Systems
    Yutaka Matsumoto, Yutaka Ohsawa
    1998 Volume 6 Issue 2 Pages 41-48
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_41
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    This paper discusses intranet geographic information systems. On intranet GIS, computer environments (including operating system, machine architecture, implementation language), role share between server and client, the method to know the place the necessary data existing, file input and output on a local file, are important. In this paper, we discuss these technical problems. To know the server computer which possesses requested data, we propose a mechanism similar with DNS (domain name system). We have developed an intranet GIS to be used on WWW browsers by using plug-in method and ActiveX.
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  • A Study on Presentation Method of City Space Information with 3 Dimensions
    Youichi ITAI
    1998 Volume 6 Issue 2 Pages 49-56
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_49
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    The method of information processing, which treats the plane and large area data by GIS, is not used for architectural designing that chiefly treats architectural and human scale data for area planning and redevelopment planning. In large area design based on much information of processing, we need three dimensional and narrow space information system made of data of architectural scale. The development of method that bridges between GIS and this system is desirable. The purpose of this study is to examine the effectiveness of the visual method of the three dimensional meshmap which we have tackled since 1992 and to verify its efficacy as a method to analyze spatial composition.
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  • Design and Implementation of an Open Disaster Information System Using GIS.
    Tomonari NISHIMURA, Yuji URAMOTO, Yukio NAKADA, Katsumi TANAKA, Shinzo ...
    1998 Volume 6 Issue 2 Pages 57-64
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_57
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    This paper discusses an information system for disaster prevention using a GIS. The information system gets a lesson from HANSHIN-AWAJI earthquake disaster. This system quickly collects information about disasters and provides official information for citizens and organs of a city. Advantages of this system are the following. The user-friendly interface: Citizens can easily operate this system. They can access to this system from their houses or offices, etc. This system visually shows disaster information using GIS on a WWW browser. The effective data structure: This system registers disaster information in the data structure. We can reduce the data size of disaster information by the data structure. The portability: The main part of this system is independent of GIS.This system provides a general interface using CORBA. This system can easily connect with any GIS by the general interface.
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  • The Use of GIS in School Education
    Its Trends in the United States and Possibilities in Japan
    Satoru ITOH, Yoshiyasu IDA, Yasuko NAKAMURA
    1998 Volume 6 Issue 2 Pages 65-70
    Published: September 15, 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_65
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    The use of Geographic Information Systems (GIS) in elementary and secondary school education has come to be paid attention to in recent years. In this paper, we attempt to discuss this use from two viewpoints. The first is from recent trends in the United States, where we can find many examples of GIS use in K-12 education. The other is from the possibilities of GIS within the Japanese educational system.
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  • ERRATUM
    1998 Volume 6 Issue 2 Pages 72
    Published: 1998
    Released on J-STAGE: May 29, 2009
    DOIhttps://doi.org/10.5638/thagis.6.2_72
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