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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Association of Geographic Information Studies
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The Korean Association of Geographic Information Studies
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Volume & Issues
Volume 14, Issue 4 - Dec 2011
Volume 14, Issue 3 - Sep 2011
Volume 14, Issue 2 - Jun 2011
Volume 14, Issue 1 - Mar 2011
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A Comparative Analysis of Forest Landscape Structures Between Famous and General Korean Forests Using Landscape Indices
Han, Hee ; Song, Jung-Eun ; Seol, A-Ra ; Park, Jin-Han ; Chung, Joo-Sang ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 1~11
DOI : 10.11108/kagis.2011.14.1.001
The objective of this study was to investigate the landscape structures of the National and Provincial Forest Parks in the list of "100 Famous Forests of Korea" designated by Korea Forest Service by comparing them with those of the non-designated forests. Among the designated and the non-designated, 34 mountain forests were chosen respectively over all provinces of Korea. The spatial characteristics of forest landscapes were quantified as the landscape indices independently using FRAGSTATS and the two sets of results of analyses were compared each other. According to the results of the comparative study, the designated forests were found on the higher elevation with the higher average slope and the more complicated relief conditions rather than those of the non-designated. In terms of landscape structure, the designated forests show the larger average patch size, the lower edge density and the higher diversity of landscape components. These results indicate that the more hilly mountain forests with the more complicated spatial distribution patterns of patches are the characteristics of the designated forests. The indices of the forest landscape structure would be useful in understanding the perception of forest landscape.
Development of Climate Analysis Seoul(CAS) Maps Based on Landuse and Meteorogical Model
Yi, Chae-Yeon ; Eum, Jeong-Hee ; Choi, Young-Jean ; Kim, Kyu-Rang ; Scherer, Dieter ; Fehrenbach, Ute ; Kim, Geun-Hoi ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 12~25
DOI : 10.11108/kagis.2011.14.1.012
It is needed to preserve good effects and to prevent bad influences on local climate in urban and environmental planning. This study seeks to develop climate analysis maps to provide realistic information considering local air temperature and wind flows. Quantitative analyses are conducted by CAS for the production, transportation, and stagnation of cold air, wind flow and thermal conditions by incorporating GIS analysis on land cover and elevation and meteorological analysis from MetPhoMod - a mesoscale weather model. The CAS helps The easier analysis and assessment of urban development on local climate. It will contribute to the better life of the people in cities by providing better understanding of the local climate to the urban space planners.
A Strategy for Activating Spatial Data Community : A Case of the NSDI CAP(Cooperative Agreements Program) in U.S.
Kim, Ho-Yong ; Nam, Kwang-Woo ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 26~39
DOI : 10.11108/kagis.2011.14.1.026
This paper reviews the strategy of activating spatial data community and its impacts, focusing on the Cooperative Agreements Program(CAP) of National Spatial Data Infrastructure(NSDI), established by Federal Geographic Data Committee(FGDC) in U.S. to facilitate cooperative data sharing. After thoroughly reviewing the 20 research categories followed by 350 cases, supported by CAP for the last decade, it turned out that since NSDI issued "Future Directions Initiative" in 2004, the CAP adopted all components of NSDI as CAP categories in attempting to reinforce the partnership rather than mainly deploying standardized meta-data. Also, CAP has been utilized as a means to enforce the role of NSDI as spatial data user and provider as well, recognizing that the spatial data community is essence for expandable and sustainable NSDI. Implementing CAP resulted in the sound structure of spatial data marketplaces increasing spatial data demand and promoting the relevant business due to diverse users.
Evaluating Suitable Analysis Methods Using Digital Terrain in Viewshed Analysis
Yeo, Chang-Hwan ; Jang, Young-Jin ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 40~48
DOI : 10.11108/kagis.2011.14.1.040
The purpose of this study is to contribute enhancing the accuracy of viewshed analysis through the explanation for an analysis method of viewshed analysis using GIS. According to previous studies, the visible area using digital terrain in viewshed analysis depends on a visible interest area, scale of terrain, spatial resolution and surface data. In this study, we used trend analysis and RMSE analysis in order to find the effect of a visible interest area, scale of terrain, etc in viewshed analysis. Results of this study are as follows. First, the result of viewshed analysis depends on a visible interest area, scale of terrain, spatial resolution, surface data such as previous studies. Second, the results in forest area are reliable than those of flat area in terms of a visible interest area. Third, the results based on raster grid data are stable than those of TIN(triangulated irregular network) in terms of input surface data. Fourth, according to the result of trend and RMSE analysis, the spatial resolution for analysis is differently applied to different scales digital terrain map in viewshed analysis. In detail, it is desirable that the spatial resolution is set less than 10m(in the case of 1/1,000 digital terrain map), 20m(in the case of 1/5,000 map), 30m(1/25,000 map).
Development of User Oriented Geographic Information Retrieval Service Module Based on Personalized Service
Lee, Seok-Cheol ; Kim, Chang-Soo ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 49~58
DOI : 10.11108/kagis.2011.14.1.049
Recently, GIS(Geographic Information System) has been developed to personalized service for providing the specialized services that is aimed to personal user based on mobile communication. The existing GIS system provides comprehensive and simple information but GIS System for personalized service must provide the adjustive information through the personal interest profile based on POI(PoInt of Interest). This paper describes the intelligent retrieval geographical information service module for providing personal oriented geographic information service. Our proposal model consists of user preference profile, acquisition of POI through hybrid network (Wireless LAN, CDMA), service platform and implementation of prototype system. Implementation model can apply to the life information service like restaurant, oil station, convenient store and etc.
A Disaster Victim Management System Using Geographic Information System
Hwang, Hyun-Suk ; Choi, Eun-Hye ; Kim, Chang-Soo ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 59~72
DOI : 10.11108/kagis.2011.14.1.059
The research of psychological supporting systems as safety and welfare for disaster victims damaged psychologically as well as physically by a sudden disaster to return to effectively their social life has been carried. The domestic National Emergency Management Agency(NEMA) is operating the Disaster Victim Psychology Support Center that helps with curing damaged psychology and studies the transmission system of psychology management services, the classification of victims for disaster psychology support, and emergency consultation method to systemically support disaster psychology management. However, current psychology supporting centers provide the simple information for supporting centers such as medical and social welfare organizations. The development research of IT-based management systems to obtain needed information to construct the proposed systems curing psychological damage is still primitive step. Therefore, this paper shall propose a GIS-based integrated management system for victims and managers to effectively share related information one another and to return to victims' social life as soon as possible. Also, we implement a simple prototype system based on the Web. The proposed system supports the spatial search and statistical analysis based on map as well as keyword search, because having the location information on disaster victims, damage occurrence places, welfare and medical institutions, and psychological supporting centers. In addition, this system has the advantage reducing the frequency of disaster damage by providing aids in making efficient policy systems for the managers.
Development of Camera Monitoring System for Detecting the Opening Status of Saemangeum Sluice Gate
Kim, Tae-Rim ; Park, Jong-Jib ; Jang, Seong-Woo ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 73~83
DOI : 10.11108/kagis.2011.14.1.073
The opening status of Saemangeum sluice gate is an important factor to the coastal water qualities near Saemangeum dikes. The sluice gate opening information is important in analysing current velocity and water quality data measured at the Saemanguem observation tower as well as in determining boundary conditions of numerical simulation for coastal environment outside Saemangeum dikes. This study establishes unmanned camera monitoring system on Saemangeum observation tower using mini notebook and digital camera, and extracts information on the opening status from images automatically. Images are analysed using variance difference of images together with edge detection techniques in order to get correct information.
Mapping Man-Made Levee Line Using LiDAR Data and Aerial Orthoimage
Choung, Yun-Jae ; Park, Hyen-Cheol ; Chung, Youn-In ; Jo, Myung-Hee ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 84~93
DOI : 10.11108/kagis.2011.14.1.084
Levee line mapping is critical to the protection of environments in river zones, the prevention of river flood and the development of river zones. Use of the remote sensing data such as LiDAR and aerial orthoimage is efficient for river mapping due to their accessibility and higher accuracy in horizontal and vertical direction. Airborne laser scanning (LiDAR) has been used for river zone mapping due to its ability to penetrate shallow water and its high vertical accuracy. Use of image source is also efficient for extraction of features by analysis of its image source. Therefore, aerial orthoimage also have been used for river zone mapping tasks due to its image source and its higher accuracy in horizontal direction. Due to these advantages, in this paper, research on three dimensional levee line mapping is implemented using LiDAR and aerial orthoimage separately. Accuracy measurement is implemented for both extracted lines generated by each data using the ground truths and statistical comparison is implemented between two measurement results. Statistical results show that the generated 3D levee line using LiDAR data has higher accuracy than the generated 3D levee line using aerial orthoimage in horizontal direction and vertical direction.
Comparative Evaluation of Muddy Water Occurrence Possibility in Dam Reservoir Using GIS
Lee, Geun-Sang ; Choi, Yun-Woong ; Park, Jin-Hyeog ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 94~106
DOI : 10.11108/kagis.2011.14.1.094
The muddy water occurrence possibility of reservoir were analyzed by considering GIS based soil erosion model, sediment delivery ratio and effective reservoir capacity. For the purpose, the weakness factors for the establishment of countermeasures of basin were analyzed by evaluating input factors of RUSLE model based on spatial data such as DEM, soil map, landcover map and so on. The potential of soil erosion was estimated considering highland upland. The sediment yields of Chungju-Dam and Soyanggang-Dam showed the highest result in sediment yield using sediment delivery ratio with considering basin area. The sediment concentration of Imha-Dam and Chungju-Dam showed the highest value as 0.791
respectively in sediment concentration with considering effective reservoir capacity. Especially, sediment yield of Imha-Dam was about 2.36 times lower than Soyanggang-Dam, but the sediment concentration was 1.90 times higher preferably, because the effective reservoir capacity of Imha-Dam was about 4.48 times lower. This study calculated sediment concentration using the 10 years mean rainfall event and could consider the aspects of soil, terrain, landcover, cultivation condition and effective reservoir capacity of each basin effectively through the results. Therefore, these quantitative sediment concentration data could be used to estimate the potential of high density turbid water for reservoir and applied with effective tools for the management of reservoir.
A Study on the Web-Based Representation of Thematic Maps Using GeoWeb Platform
Kim, Nam-Shin ; Jin, Shizhu ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 107~117
DOI : 10.11108/kagis.2011.14.1.107
This study aimed to inquire into possibilities of the web-based representation of thematic maps by geo-information mashup in the geoweb platform. In the Web2.0, Google platform leads the geoweb by offering effective mashup functions for geo-information. Geo-information mashup is opening a new horizon of map applications in fusion with a great of data in the Internet. Geo-information mashup by the available data method can be classified as two type; one is linkage of sources of platform itself(satellite images) and external data, the other is linkage of platform itself and user created contents. This study made heatmap, proportional map, and choropleth map based on Google satellite images by the linkage of platform itself and external data. As a result, thematic map of Google mashup expected to give us to a flexibility for difference interpretations of geographical distribution by representing overlap with satellite images.
A Study on Utilization of GNSS and Spatial Image for River Site Decision Supporting
Park, Hyeon-Cheol ; Choung, Yun-Jae ; Jo, Myung-Hee ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 1, 2011, Pages 118~129
DOI : 10.11108/kagis.2011.14.1.118
This Study has developed the information system of the rivers based on 3D image GIS by converging the latest information technology of GIS(Geographic Information System), RS(Remote Sensing), GNSS(Global Navigation Satellite System), aerial laser survey(LiDAR) with real time network technology in order to understand the current situation of all the four major rivers and support the administrative management system. The said information system acquires the high resolution aerial photographs of 25cm, aerial laser survey and water depth surveying data to express precise space information on the whole Youngsan River which is the leading project site out of the four river sites. Monitoring the site is made available on the transporting means such as a helicopter, boat or a bus in connection with locational coordinate tracking skill for the moving objects in real time using GNSS. It makes monitoring all the information on the four river job sites available at a glance, which can obtain the reliability of the people to such vast areas along with enhancing the recognition of the people by publicity of four Rivers Revitalizing Project and reports thereof.