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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 7, Issue 4 - Dec 2004
Volume 7, Issue 3 - Sep 2004
Volume 7, Issue 2 - Jun 2004
Volume 7, Issue 1 - Mar 2004
Selecting the target year
Urban Growth Analysis Through Satellite Image and Zonal Data
Kim, Jae-Ik ; Hwang, Kook-Woong ; Chung, Hyun-Wook ; Yeo, Chang-Hwan ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 1~12
Nowadays, a satellite image is widely utilized in identifying and predicting urban spatial growth. It provides essential informations on horizontal expansion of urbanized areas. However, its usefulness becomes very limited in analyzing density of urban development. On the contrary, zonal data, typically census data, provides various density information such as population, number of houses, floor information within a given zone. The problem of the zonal data in analyzing urban growth is that the size of the zone is too big. The minimum administration unit, Dong, is too big to match the satellite images. This study tries to derive synergy effects by matching the merits of the two information sources-- image data and zonal data. For this purpose, basic statistical unit (census block size) is utilized as a zonal unit. By comparing the image and zonal data of 1985 and 2000 of Daegu metropolitan area, this study concludes that urban growth pattern is better explained when the two types of data are properly used.
The Analysis of 2001 Land Use Distribution of Daejeon Metropolitan City based on KOMPSAT-1 EOC Imagery
Kim, Youn-Soo ; Jeon, Gap-Ho ; Lee, Kwang-Jae ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 13~21
The dissemination of commercial satellite images. which have the high spatial resolution such as aerial photos, are the active trend in remote sensing community because of the recent development in satellite and sensor technology. Such high resolution satellite images provide a unique tool for the monitoring of ongoing urban land use change. Especially KOMPSAT-1, which was launched at December 1999 and successfully operated up to now, provides repeatedly panchromatic images over Korean peninsula, which has the spatial resolution of 6.6m. Based upon this KOMPSAT-1 EOC image data we can try to analyze and assess the temporal urban land use change, which could not be done because lack of such data. The aim of this paper is to analyze and assess the spatial land use characteristics of Daejeon Metropolitan City based on KOMPSAT-1 EOC data. The land use map of year 2001 is generated through the modification of the year 2000 land use map, which is published by National Geographic Information Institute, using visual interpretation of KOMPSAT-1 EOC image which is acquired in year 2001. This study can be the start point of the time series analysis of the long term land use change monitoring mit KOMPSAT-1 EOC data.
An Analysis on Landscape Ecological Pattern of the Geumho River Watershed Forest
Park, Kyung-Hun ; Jung, Sung-Gwan ; Lee, Hyun-Taek ; Oh, Jeong-Hak ; Kim, Kyung-Tae ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 22~34
An artificial disturbance like fragmentation in watershed forest has impacted a sustainability of watershed ecosystem, therefore this research quantified the landscape structure in the Geumho river watershed using landscape indices and GIS. Landscape indices were calculated from the forest distributed maps for 24 subwatersheds. Three common factors, which explained about 85% of the variation in the original data, were extracted by a factor analysis. The fragmentation gradient in forest landscape, which was calculated from the factor scores, was correlated with proportion of urban land (r=0.827, p<0.01,
=0.685), elevation (r=-0.637, p<0.01) and slope gradient (r=-0.593, p<0.01). The result of the study presented that the methodology and the values of landscape indices to assess the structural patterns of forest landscape for the Geumho river watershed management. Future research will be directed towards the detection of impacts of landscape patterns and their changes on the integrity of watershed environments.
Implementation of Query Processor for Efficient Vehicle Monitoring and Control in e-Logistics
Kim, Dong-Ho ; Kim, Jin-Suk ; Ryu, Keun-Ho ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 35~47
Telematics and LBS is one of rapidly emerged technology domains. In order to efficiently construct them, moving object technology which manages huge volume of real-time location data is required. Especially, the query which obtains special sorts of information closely related to the detailed applications is required in order to effectively retrieve and analyze the location data for moving object in logistics domain. It has also complex query structure comparing to the conventional database query. The approach using the standard database query language, like SQL, can be considered as an effective alternative choice. In this paper, we not only propose a new query language, entitled as MOQL based on SQL, for the query processing of the vehicle monitoring and control in e-Logistics but also design and implement the query processor.
A Study on Fast Datum Transformation model for GIS
Suh, Yong-Cheol ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 48~56
This research focuses on the development of a fast datum transformation model to be used in GIS that utilizes real-time data transformation. Instance, when a GIS data constructed according to a datum is conformed to another datum, instead of transforming the axes of the original data, the data is transformed right before the results are reflected on the monitor. In this research, the prospects of calculating transformation parameters for every grid cells on the area based on two-dimensional conformal transformation model in order to decrease real-time datum transformation time while maintaining a high accuracy has been investigated. Research results showed that for a fixed area, the accuracies of the two-dimensional conformal transformation and the three-dimensional datum transformation, which requires more computing time, were almost equal and fast transformation speed, high accuracy real-time datum transformation is made feasible by implementing the grid-divided two-dimensional conformal transformation model.
A base study of an Ecological Mapping technique by using GIS and Remote Sensing
Yi, Gi-Chul ; Lee, Won-Hwa ; Yoon, Hae-Soon ; Nam, Chun-Hee ; Kim, Gu-Yeon ; Kim, Seong-Hwan ; Suh, Sang-Hyun ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 57~69
This study developed an ecological mapping technique with GIS database using the analyses of existing ecological survey reports and the change detection on the Nakdong river estuary. The data which are used to establish GIS DB include 2 Landsat TM images on Nov. 31, 1984 and May 17, 1997, 1:25,000 topographical maps established by National Geography Institution and various ecological survey reports published by Busan metropolitan city government. The details for producing ecological map are as follows. At first, the current methods of ecomapping efforts and previous ecological surveys of Nakdong river estuary were carefully examined. Secondly, the land cover maps were created from the classified Landsat images of 1984 and 1997 for the spatiotemporal ecosystem analysis. Thirdly, the ecosystem was evaluated by using GIS ecological database based on the criteria of botany, zoology and water quality etc. Each criteria was reclassified into 3 stages which describe the overall quality of ecological condition. At last, the comprehensive ecological map was suggested as a prototype of ecosystem assesment and management tool with the discussion of further study. The findings of this study would be a milestone for preserving and managing the ecosystem.
The Development of Aerial Navigation Map and Aerial Photographic Guidance System
Hwang, Jin-Sang ; Lee, Jae-One ; Yoon, Jong-Seong ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 70~78
The aerial photographic mission is a difficult work because aircraft must be flown along the specified flight lines, not marked on the ground. This study has been carried out for the development of aerial photographic guidance system, which enables us to make aerial photographic task easier. Such a flight guidance system is able to display a variety of map informations in a quick and efficient way in order to guide pilot. For this purpose, we first developed the nationwide aerial navigation map database that provides the topographic map information used for topographic interpretation and aeronautical chart information used for the flight security. Next, we developed the aerial photographic guidance system which uses the aerial navigation map as base map. It is concluded that the developed system can display the various map informations quickly and do any other photographing guidance tasks well in fast moving airplane.
Estimation of Areal Evapotranspiration Using NDVI and Temperature Data
Shin, Sha-Chul ; An, Tae-Young ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 79~89
Remote sensing technique is a probable means to estimate distribution of actual evapotranspiration in connection with regional characteristics of vegetation and landuse. The factors controlling evapotranspiration from ground surface are air temperature, humidity, wind, radiation, soil moisture and so on. Not only the vegetation influences directly the evapotranspiration, but also these factors strongly influences the vegetation growth at the area. Therefore, it can be expected that evapotranspiration is highly correlated to vegetation condition. The normalized difference vegetation index (NDVI) showed excellent ability to get the vegetation information. The NDVI is obtained using NOAA/AVHRR have been studied as a tool for vegetation monitoring. In this paper, a simple method to estimate actual avapotranspiration is proposed based on vegetation and meteorological data.
Construction of the Fishing Grounds Information Management System using GIS
Park, Sung-Eun ; Choi, Woo-Jeung ; Lee, Won-Chan ; Koo, Jun-Ho ; Jung, Rae-Hong ; Park, Jong-Soo ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 90~98
This paper illustrates some practical geographic information system (GIS) applications for aiding fishery managers and coastal area planners in analysing the likely control scheme of coastal farming areas, and in providing a flexible framework for decision making on fishery development and zoning issues. The effective management of marine farming operation is vitally important since it can greatly influence economic availability by determining capital outlay and by affecting running costs, rates of productions and mortality factors. GIS has been widely adopted elsewhere as a potent management tool in both the private and public sectors. GIS is now being extensively adopted in marine-associated activities. Here, we have used GeoMania v2.5 GIS software and its 3D Analyst extension module to visualize marine farming areas data that were collected around the Jinhae bay.
GUI Implementation for 3D Visualization of Ocean Hydrodynamic Models
Choi, Woo-Jeung ; Park, Sung-Eun ; Lee, Won-Chan ; Koo, Jun-Ho ; Suh, Young-Sang ; Kim, Tae-Hyun ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 99~107
This study presents an application of GIS technologies to construct the graphic user interface for 3-dimensional exhibition of the results obtained by ocean hydrodynamic model. In coastal management studies, GIS provide a receptacle for scattered data from diverse sources and an improvement of the 3D visualization of such data. Within the frame of a GIS a variety of analytical, statistical and modeling tools can be applied to transform data and make them suitable for a given application. A 3D hydrodynamic model was driven by time-dependent external forcing such as tide, wind velocity, temperature. salinity, river discharge, and solar radiation under the open boundary condition. The Jinhae bay was selected as a case study. Here, we have used GeoMania v2.5 GIS software and its 3D Analyst extension module to visualize hydrodynamic model result that were simulated around the Jinhae bay.
The Influence Analysis for Soil Loss in Reservoir Slant using GIS-based Soil Loss Model
Lee, Geun-Sang ; Park, Jin-Hyeog ; Hwang, Eui-Ho ; Koh, Deuk-Koo ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 108~117
Soil particles from rainfall flow into reservoir and give lots of influence in water quality because the geological conditions and landcover characteristics of Imdong watershed have a weakness against soil loss. Especially, reservoir slant is indicated by the main source area of soil loss. This study selected RUSLE model that could apply GIS and satellite image to evaluate the contribution rate of soil loss in reservoir slant. And we carried out an on-the-spot survey for the range, width and condition of reservoir slant that give much influences to the accuracy of soil loss. As the result of evaluation to the influence of soil loss in reservoir slant, it showed 2.64% in comparison with Imdong watershed. In view of these results, the influence of soil loss in reservoir slant was evaluated in low comparing with Imdong watershed relatively.
A study on the Urban Growth Model of Gimhae City Using Cellular Automata
Lee, Sung Ho ; Yun, Jeong Mi ; Seo, Kyung Chon ; Nam, Kwang Woo ; Park, Sang Chul ;
Journal of the Korean Association of Geographic Information Studies, volume 7, issue 3, 2004, Pages 118~125
The purpose of this study is to decide an appropriate neighborhood and a transition rule of cellular automata by analyzing the past growth process of urban areas in Gimhae. With cellular automata which can manage the change based on the dynamic model and time, this study analyzes the urban growth of Gimhae from 1987 to 2001. Also, through the simulation of different types for neighborhood and transition rules, we can find the appropriate neighborhood and the transition rule for Gimhae. In conclusion, the forecast of physical urban growth pattern is more accurate under conditions when the number of matrixes for the neighborhood is small, the shape of the neighborhood is rectangular, "
" value, which control the pace of urban growth, is low and the transition possibility (
) is high.