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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society for Geospatial Information System
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The Korean Society for Geospatial Information System
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Volume & Issues
Volume 1, Issue 2 - Dec 1993
Volume 1, Issue 1 - Jun 1993
Selecting the target year
지형공간정보쳬계론 I. 총론
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 39~54
"GSIS 자료 표준화"
Sin, Dong-Bin ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 55~59
A Study on Application of GSIS for Transportation Planning and Analysis of Traffic Volume
Choi, Jae-Hwa ; Park, Hee-Ju ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 117~125
GSIS is a system that contains spatially referenced data that can be analyzed and converted to information for a specific set of purpose, or application. The key feature of a GSIS is the analysis of data to produce new information. The current emphasis in the transportation is to implement GSIS in conjunction with real time systems Requirements for a transportation GSIS are very different from the traditional GSIS software that has been designed for environmental and natural resource applications. A transportation GSIS may need to include the ability for franc volume, forecasting, pavement management A regional transportation planning model is actually a set of models that are used to inventory and then forecast a region's population, employment, income, housing and the demand of automobile and transit in a region. The data such as adminstration bound, m of landuse, road networks, location of schools, offices with populations are used in this paper. Many of these data are used for analyzing of traffic volume, traffic demand, time of mad construction using GSIS.
The Role of Geographic Information System and Its Functional Intergration Strategy in the Conventional Transportation Planning Process
Choi, Kee-Choo ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 127~140
The purpose of this paper is to examine the possible benefits of combining transportation planning models with geographic information systems (GIS) in the hope that intergrating these systems can alleviate the inherent problems of transportation planning models such as user unfriendliness, labor intensiveness, and theoretical limitations. Specially, this paper focuses on the issue of incompatiblity between GIS and the conventional transportation planning models in dealing with network topologies. Resolving this conflict in topologies is a conerstone for eliminating the user-unfriendliness and labor-intensiveness issues. This paper presents the development of an algorithm that converts GIS topology into transportation network topology. The FORTRAN-based topology conversion algorithm generates transportation networks from the GIS cartographic file and establishes a communication charmel between the two systems.
A Generation of Digital Elevation Model for GSIS using SPOT Satellite Imagery
Yeu, Bock-Mo ; Park, Hong-Gi ; Jeong, Soo ; Kim, Won-Dae ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 141~152
This study aims to generate digital elevation model from digital satellite imagery. Digital elevation model is being increasingly used for geo-spatial information system database development and for digital map production. Image matching technique was applied to acquire conjugate image coordinates and the algorithm for digital elevation model generation is presented in this study The exterior orientation parameters of the satellite imagery is determined by bundle adjustment and standard correlation was applied for image matching conjugate of image points. The window as well as the searching area have to be defined in image matching. Different sizes of searching area were tested to study the appropriate size of the searching area. Various coordinate transformation methods were applied to improve the computation speed as well as the geometric accuracy. The results were then statistically analysed after which the searching area is determined with the safety factor. To evaluate the accuracy of digital elevation model, 3-D coordinates were extracted from 1/5000 scale topographic map and this was compared to the digital elevation model generated from satellite imagery. The algorithm for generation of digital elevation model generated from satellite imagery is presented in this study which will prove effective in the database development of geo-spatial information system and in digital elevation modelling of large areas.
Analysis of Land Suitability for Rural Area Using the Geographical Information System
Rhee, Shin-Ho ; Choi, Jin-Yong ; Kim, Han-Joong ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 153~158
The direction of land use for the subject district (Zuksan-myun, Anseong-gun, Kyeonggi-do) were analyzed as the basic model of new rural land management system connected to production and living. General land use planning was presented by land suitability classification which was applied to geographical information system(software ARC/INFO). The course of analysis of land suitability using the geographical information system were generalized and the results of analysis for paddy and upland fields and settlement were presented as 5 criteria of the suitability rank. It was found out that the analysis of land suitability is able to use as primary data of rural land use planning.
A Study on the Acquisition of Geoidal Height by Means of Global Positioning System
Kang, Joon-Mook ; Lee, Yong-Chang ; Park, Pil-Ho ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 159~169
As Global Positioning System is able to provide 24-hour all weather surveying capability and high precision survey in three dimension, expected that the extensive use of GPS to support geophysics, geophysics, millitary and time correction etc. But in order to use the GPS results effectively, we have to solve problems about coordinates transformation relating the WGS84 to Bessel Datums and development of the accurate geoid undulation model. In this paper, we derive polynomial model equations about geoid undulation around local area(longitude
) in Korea by GPS/Leveling method, also study the geoidal height calcaulation methods supplemented by Earth Gravitational Models (OSU981A, OSU86F).
Modeling Large Scale of Urban Nonpoint Source Pollution using a Geographic Information System
Kim, Kye-Hyun ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 171~180
Concern about nonpoint source pollution associated with urban storm water has led to the development of new tools for better water quality planning. This paper presents an application of a geographic information system (GIS) for urban water quality study. The GIS was used to manage land use data for nonpoint source pollution modeling and to aggregate pollutant loadings within various types of geographic units. An empirical water quality model was used to estimate pollutant loadings based primarily on land use. A land use coverage was created by updating an old coverage through interpretation of recent photography. This land use coverage was also used to record all pollutant loadings for each land use polygon. Storm sewer maps were digitized and interpreted to create a coverage of storm sewer basins and sub-basins. By overlaying pollutant loadings with the sewer sub-basin layer, aggregated pollutant loadings for major sewer outfalls were calculated. Based on the loading information, critical areas of excessive pollutant loadings were located and the effectiveness of Best Management Practices (BMPs) to control pollutant loadings were evaluated.
A Study on the Effect of Image Resampling in Land Cover Classification
Yang, In-Tae ; Kim, Yeon-Jun ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 181~192
Image is composed of the digital numbers including information on natural phenomena, their condition and the kind of objects. Digital numbers change in geometric correction(that is preprocessing). This change of digital numbers gave an effect on results of land-cover classification. We intend to know the influence of resampling as classifying land-cover using the image reconstructed by geometric correction in this paper. Chun-cheon basin was selected the study area having most variable land-cover pattern in North-Han river valley and made on use of RESTEC data resampled in preprocessing. Land-cover is classified as six classes of LEVEL I using maximum likelyhood classification method. We classified land-cover using the image resampled by two methods in this study. Bilinear interpolation method was most accurate in five classes except bear-land in the result of comparing each class with topographic map. We should choose the method of resampling according to the class in which we put the importance in the image resampling of geometric correction. And if we use four-season's image, we may classify more accurately in case of the confusion in case of the confusion in borders of rice field and farm.
A Discussion of the Two Alternative Methods for Quantifying Changes : by Pixel Values Versus by Thematic Categories
Choung, Song-Hak ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 193~201
In a number of areas, there are important benefits to be gained when we bring both the detection and monitoring abilities of remote sensing as well as the philosophical approach and analytic capabilities of a geographic information system to bear on a problem. A key area in the joint applications of remote sensing technology and GIS is to identify change. Whether this change is of interest for its own sake, or because the change causes us to act (for example, to update a map), remote sensing provides an excellent suite of tools for detecting change. At the same time, a GIS is perhaps the best analytic toot for quantifying the process of change. There are two alternative methods for quantifying changes. The conceptually simple approach is to un the pixel values in each of the images. This method is practical but may be too simple to identify the variety of changes in a complex scene. The common alternative is called symbolic change detection. The analyst first decides on a set of thematic categories that are important to distinguish for the application. This approach is useful only if accurate landuse/cover classifications can be obtained. Persons conducting digital change detection must be intimately familiar with the environment under study, the quality of the data set and the characteristics of change detection algorithms. Also, much work remains to identify optimum change detection algorithms for specific geographic areas and problems.
A Study on the Masterplan of Water Intergrated Management System
Lee, Hyun-Jik ; Bae, Do-Sue ; Lee, Joo-Hyoung ; Park, Joung-Nam ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 203~215
Haying the key role of the city functions, the waterworks reaches the limitation of the practical performance caused by the rapid expansion of the city. At this point this study suggests a masterplan that will control the Water Integrated Management System (WIMS) dealing all affairs of the waterworks in order to make efficient solutions to the problems of the present waterworks. According as the analysis of structure, function, and current operations including information volume has been performed by using the structured system analysis method, this study set up the basic trend of WIMS and excution strategies in order.
A Study On Cost/Benefit Analysis in the Economic Evaluation of GSIS Implementation
Kim, Joo-Hwan ; Yom, Jae-Hong ; Sohn, Duk-Jae ; Yeon, Sang-Ho ;
Journal of Korean Society for Geospatial Information System, volume 1, issue 1, 1993, Pages 217~225
The cost/benefit analysis method is frequently used in the feasibility study of investments on geo-spatial information system. The cost/benefit analysis method has been applied extensively in the feasibility study of conventional information systems and recently efforts has been made to apply this method to geo-spatial information systems as well. This study efforts were made to present a cost/benefit model suitable for Korean GSIS and this model was then applied to Facility Management. In establishment of the cost model, the items of various costs were defined and a survey was made to find the average unit cost of each item. For the benefit model, the benefits of implementing a geo-spatial information system is classified into tangible and intangible benefits and only th tangible benefits were further classified. The established cost/benefit model was then applied to a gas distribution company with more than 100 employees and more than 300,000 customers. A GSIS was designed and the cost its implementation was compared to the present manual method of operation.