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Development of the providing and management system for the national land survey information
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| Shigeyuki Obayashi |
Member of JSCE, Dr.Eng., Professor, Dept. of Civil Eng., Science University of Tokyo |
| Hirohito Kojima |
Member of JSCE, Dr.Eng., Associate Professor, Dept. of Civil Eng., Science University of Tokyo (e-mail:kojima_h@rs.noda.sut.ac.jp) |
| Masako Takai |
Member of JSCE, Graduate School of Science University of Tokyo
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| <Abstract>
To support the better utilization of the information arranged through the national land surveys (e.g., termed the Land Classification Survey, the Water Survey, etc. as the public works), the providing and management system of those national land survey information has been developed, which is operated under the network environment. To design the data set structure, the following three divisions on the information are newly defined: 1)Prescribed information, 2) Common information, and 3) Related information. The Data Set Management System (termed DSMS), that contributes to manage the data sets in the web-site by linking the index-information in the database-site, is constructed so that we can operate and manage the data sets efficiently. The developed system in this study actualizes the unitary-management of the data sets with respect to the administrative district, as well as easy operation to refer the information under the network environment.
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| <Keywords>
national land survey, data set, geographical information, data resource management
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Development of Practical Software for Micro Traffic Flow Petri Net Simulator
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| Noboru Kinata |
Member of JSCE, Department of Civil Engineering, Kanagawa University |
| Keiich Kisino |
Member of JSCE, Chuo Fukken Consultants Co., Ltd. |
| Yasuo Siromizu |
Member of JSCE, Chuo Fukken Consultants Co., Ltd. |
| <Abstract>
Recently demand for microscopic traffic flow simulators is increasing both from changes of problem situations we encounter in transportation planning and intensity of public involvement (PI) movement in public planning. We have been developing a new type simulator based on Coloured Timed Petri Net. This type simulator has potential to be put into practical use as PI support system. In this paper we present a more practically strengthened prototype system on Windows-OS platform and show its active supportability for development of individual simulations and accountability of their usage to a wide range of people involved. We demonstrate especially how newly developed menus such as drawing traffic-flow-net, tracing token behaviors on the net, making the individual places/transitions/arcs visible or invisible by selection, work and improve readability of Petri net description for microscopic traffic flows and contribute to putting the simulator into practical usage.
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| <Keywords>
simulation, Coloured timed Petri nets, microscopic traffic flows, transportation planning, Public Involvement(PI)
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GIS CG Integrated System for Automatic Generation of 3-D Urban Models
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| Kenichi Sugihara |
Associate Professor. Gifu Keizai University, Department of Business Administration |
| Toshitugu Hayashi |
Nagoya University, Graduate School of Environmental Studies |
| <Abstract>
3-D Urban Models are the important information infrastructure that can be used for various purposes, such as, simulator for landscape evaluation, community planning and civil engineering. However, in order to realize 3-D urban model, the enormous time and money have to be consumed to design the model and to acquire the data for the model. In this paper, we propose the system to generate 3-D Urban Models automatically, utilizing and integrating GIS and CG. The programs have been developed to process the 2-D GIS information. Another program on the side of 3-D CG receives the processed data and generates 3-D Urban Models automatically.
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| <Keywords>
GIS(Geography Information System), CG(Computer Graphics), Landscape Evaluation, 3-D Urban Model, Automatic Generation
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A fundamental Study of Neural Network System for Conjecturing Weather in Local Area Using GPS
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| Shigenori Tanaka |
Faculty of Informatics, Kansai University |
| Hitoshi Furuta |
Faculty of Informatics, Kansai University |
| Michiyuki Hirokane |
Faculty of Informatics, Kansai University |
| Tomonori Takada |
Mitsui Construction Ltd., |
| Tatsunori Sada |
Mitsui Construction Ltd., |
| Kousei Uchino |
Graduate School of Informatics, Kansai University |
| <Abstract>
The GPS is used in surveying recently. The results of GPS surveying contain errors due to the delay of GPS radio waves caused by vapor in the atmosphere. Developed in this study is a system which forecasts local weather by making use of GPS data under the influence of the vapor. The neural network technology was used to relate GPS data to weather conditions. In a preliminary experiment, the simulation of weather forecasting was carried out to select GPS data items to be used in the main experiment. A pilot system was constructed on the GPS data items of the preliminary experiment. The pilot system forecast sunny and rainy weathers correctly. Then the main experiment was carried out, the results of the preliminary one taken into account. In the main experiment, meteorological factors in addition to GPS data were used to construct a forecasting system, which forecast all weathers correctly except a mixture of sunny and cloudy weathers.
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| <Keywords>
Short-Range Weather Forecast, Local Area, GPS, Neural Network, and Identification Problem
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A Study for Producing 3D Model Space from 2D Digital Picture using Photogrammetry Technology
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| Shigenori Tanaka |
Faculty of Informatics, Kansai University |
| Hitoshi Furuta |
Faculty of Informatics, Kansai University |
| Etsuji Kitagawa |
Graduate School of Informatics, Kansai University |
| Hajime Noda |
Graduate School of Informatics, Kansai University |
| Hirokazu Muraki |
Graduate School of Informatics, Kansai University |
| <Abstract>
Three-dimensional CAD and CG, which make use of advanced computer technology, has lately attracted considerable attention. Also attracting attention is photogrammetric technology to acquire three-dimensional coordinate data from two-dimensional image data recorded by digital cameras. Photographing and the determination of measuring points are more difficult even for experts in ground photogrammetry, for which the demand is increasing, as compared with the same tasks in aerial photogrammetry which is used for the preparation of maps and so on. Accordingly it takes enomous labor and time to obtain accurate three-dimensional coordinate data by ground photogrammetry and, therefore, it has hardly been put to practical use yet. Under the circumstances, the object of the present study was to develop a system which enables us, without requiring expensive apparatuses or expertise, to create 3D model spaces easily and quickly just by taking two-dimensional digital photographs.
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| <Keywords>
Photogrammetry, Digital Camera, 2D Digital Image, Optimal Pass Point, Genetic Algorithm, 3D Model, and Computer Graphics
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