| Scenario |
Surrounded by high mountains, with average altitude from 380 to 2000 meters, Fu Hsing Township in Taoyuan County is measured 350.7775 square kilometers. In such natural environment, the scenery is beautiful, but the attractive natural environment takes the local government a great deal of budget to maintain the roads and bridges or to fix them when the facilities are damaged. In respect of management, except for the provincial highways, county roads and township roads which are given ID number, the rest of village roads, farm roads, and bridges are not given ID number whose basic records are not recorded, either. Moreover, the staff transaction may cause the management problems of engineering and property. For instance, the same project might be repeatedly budgeted. Or ambiguous responsibility for related administrative organizations and the dispute of construction on private land might cause the management problems.
In order to effectively solve the described problems and create a set of sustainable mechanism suitable for this township, the Fu Hsing township office plans to build a complete set of GIS system with expectation of storing and managing geospatial data and acting as the aided tool for policy maker to make the decision with better efficiency and correctness.
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| Challenges |
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Farm Roads and Bridges Information System interface |
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| In Fu Hsing township there are thousands of roads and bridges, and how to systematically establish such a huge amount of data as well as the following management problem is the biggest challenge.
In addition, the different official units might request the same data; however, the data is not highly exchangeable among units, and no effective channel for the data sharing will cause another problem that a huge budget will be spent on establishing the similar data. Therefore, another challenge is to find a solution to effectively collect and manage the data from all units and how to make all units acquire data needed through one platform so that the data can be shared.
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| Goals |
The development of Farm Roads and Bridges Information System aims to systematically create the basic data of the farm roads and bridges in this township through a complete set of GIS system to centrally store and manage data so that the engineering unit has the reference basis in construction or the financial unit could obtain some basis to do budget management, avoiding the resources being released in the same target or indefinite responsibility and causes unnecessary expense.
Furthermore, to effectively utilize the result data, through the implementation of WebGIS in the project, users in all related units are able to directly browse, measure, query and orientation with browser on the web without installing any professional software to achieve the data sharing and effectively improve the working efficiency and meet the business need.
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| Solutions |
To effectively apply the census and the result, this project has designed a complete database of farm roads and bridges, and with the map server a complete set of WebGIS is built up.
Farm Roads and Bridges Information System is the Web-GIS system built for this project. The database is built using Microsoft Windows SQL Server 2000, and with the internet map server, SuperWebGIS, as the map server; the system can generate maps and provide GIS functions. In respect of web development, ASP.NET 2.0 / JavaScript is used to design the web. In the future users in related units do not need to install any internet browser plug-ins but simply through the browser software of Win 2000 or Win XP operating system to use the functions provided in the system.
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| Results |
The roads and bridges data in Fu Hsing township and the GIS position are the major part of Farm Roads and Bridges Information System; moreover, the internet GIS function is built with WebGIS technology, allowing users in all units to do query or position on web.
The system function architecture can be divided into four parts: Basic Map Manipulation, Thematic Layer Query, GIS Position and Management. Please refer to the chart below.
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| System Function Architecture |
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Basic Map Manipulation: |
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Farm Roads and Bridges Information System provides various map browse tools, and users can use Zoom to Full Extent, Zoom In/Out, Pan or Measure tools to do basic browsing according to the needs. |
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| 2. |
Thematic Layer Query: |
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Farm Roads and Bridges Information System provides various layer data such as bridge, mile point, disaster point, suspension bridge, cadastral map, road, aerial photography, terrain map, etc. As users directly click any bridge, mile point or disaster point, the attribute data of ID number, road name, distance and village name and the surveying photography of the clicked centroid will show on the screen.
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| Through the "Thematic Layer Query" method the attribute data of the roads or bridges can be obtained rapidly. |
Besides, if the user has the administrator authentication, the attribute data of the facility can be modified with the modification function. |
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GIS Position: |
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Farm Roads and Bridges Information System provides ten methods to position: Village Position, Cadastral Position, Coordinate Position, Mile Point Position, Farm Road Position, Bridge Position, Damaged Road Position, Damaged Bridge Position and Suspension Bridge Position. Users can select the suitable position method according to the need through clicking the list to rapidly and efficiently search the wanted centroid.
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| Through "Suspension Bridge Position" method, the wanted centroid can be found out rapidly.. |
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Management: |
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The system uses account authentication mechanism as the foundation of the web management. Through the account authentication, users can manage web, increase or modify disaster centroid, load road maintaining data or load farm roads according to the authentication so that data is maintained and updated. |
Farm Roads and Bridges Information System can act as the basis for construction unit when proceeding with the construction and resource distribution, which can effectively prevent the same project from being repeatedly budgeted due to engineering staff transaction. Also, it assists the financial administrative unit to precisely control the budget by managing the accurate data of roads and bridges, reducing the unnecessary expense. Furthermore, Farm Roads and Bridges Information System provides a cross-unit service platform for integration of geographic information files and system. As a result, the business procedure is effectively simplified, the administrative cost has been significantly reduced by 18% and the service quality and efficiency is also improved.
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