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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korea Spatial Information Society
Journal Basic Information
Journal DOI :
The Korean Association of Geographic Inforamtion Studies
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Volume & Issues
Volume 20, Issue 6 - Dec 2012
Volume 20, Issue 5 - Oct 2012
Volume 20, Issue 4 - Aug 2012
Volume 20, Issue 3 - Jun 2012
Volume 20, Issue 2 - Apr 2012
Volume 20, Issue 1 - Feb 2012
Selecting the target year
Exploring Reasonable Pricing System for Inland Container Cargo Transportation Using GIS Service Area Analysis
Joo, Seung-Min ; Um, Jung-Sup ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 1~14
DOI : 10.12672/ksis.2012.20.3.001
This paper has investigated the unreasonable pricing system for container cargo with special reference to inland transport since it is determined by administrative boundary without considering travelling distance. This research is primarily intended to improve the current pricing system by introducing a pricing support system about the container cargo in the country which applies GIS service area analysis to transportation data. Price simulation maps were generated to find out reasonable pricing strategy. Pricing alternative integrating travelling distance into administrative zoning brings about more desirable results than individual driving cost alone. The research can contribute to more reasonable pricing for the fuel consumption expense and serve as useful instruments for planning pricing system for container cargo. It is anticipated that this research output could be used as a valuable reference to increase the scientific and objective pricing for container cargo by overcoming serious constraints suffered from the past non-GIS-based approach.
An Empirical Evaluation Scheme for Pedestrian Environment by Integrated Approach to TOD Planning Elements
Joo, Yong-Jin ; Ha, Eun-Ji ; Jun, Chul-Min ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 15~25
DOI : 10.12672/ksis.2012.20.3.015
In order to resolve transportation system focused on vehicles which have led to all sorts of problems such as traffic congestion, air pollution and so on, Korea recently have tended to center around Transit Oriented Development(TOD) which is capable of initiating public traffic demands. It is imperative to develop objective evaluation method which is able to measure pedestrian environment and amenity in order to facilitate green transit. The purpose of this paper is to present evaluation indices and measurement framework of pedestrian environment by analyzing effect on TOD major planning factors such as diversity, density, design, and supply etc. For this, we applied evaluation index with regard to TOD planning factors, investigating connection to pedestrian and employed AHP (Analytic Hierarchy Process) so as to quantify the result of measurement in Jongro 3ga and Hangangjin station. As a result, we presented relationship between travel patterns of pedestrian and each TOD planning factor. More importantly, the proposed framework is expected to make the best of the visualization as well as evaluation method for the pedestrian accessibility, convenience of public transportation, and the mixed land-use patterns in subway area and transit center.
Detection of Individual Trees and Estimation of Mean Tree Height using Airborne LIDAR Data
Hwang, Se-Ran ; Lee, Mi-Jin ; Lee, Im-Pyeong ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 27~38
DOI : 10.12672/ksis.2012.20.3.027
As the necessity of forest conservation and management has been increased, various forest studies using LIDAR data have been actively performed. These studies often utilize the tree height as an important parameter to measure the forest quantitatively. This study thus attempt to apply two representative methods to estimate tree height from airborne LIDAR data and compare the results. The first method based on the detection of the individual trees using a local maximum filter estimates the number of trees, the position and heights of the individual trees, and the mean tree height. The other method estimates the maximum and mean tree height, and the crown mean height for each grid cell or the entire area from the canopy height model (CHM) and height histogram. In comparison with the field measurements, 76.6% of the individual trees are detected correctly; and the estimated heights of all trees and only conifer trees show the RMSE of 1.91m and 0.75m, respectively. The tree mean heights estimated from CHM retain about 1~2m RMSE, and the histogram method underestimates the tree mean height with about 0.6m. For more accurate derivation of diverse forest information, we should select and integrate the complimentary methods appropriate to the tree types and estimation parameters.
A Hydrometeorological Time Series Analysis of Geum River Watershed with GIS Data Considering Climate Change
Park, Jin-Hyeog ; Lee, Geun-Sang ; Yang, Jeong-Seok ; Kim, Sea-Won ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 39~50
DOI : 10.12672/ksis.2012.20.3.039
The objective of this study is the quantitative analysis of climate change effects by performing several statistical analyses with hydrometeorological data sets for past 30 years in Geum river watershed. Temperature, precipitation, relative humidity data sets were collected from eight observation stations for 37 years(1973~2009) in Geum river watershed. River level data was collected from Gongju and Gyuam gauge stations for 36 years(1973~2008) considering rating curve credibility problems and future long-term runoff modeling. Annual and seasonal year-to-year variation of hydrometeorological components were analyzed by calculating the average, standard deviation, skewness, and coefficient of variation. The results show precipitation has the strongest variability. Run test, Turning point test, and Anderson Exact test were performed to check if there is randomness in the data sets. Temperature and precipitation data have randomness and relative humidity and river level data have regularity. Groundwater level data has both aspects(randomness and regularity). Linear regression and Mann-Kendal test were performed for trend test. Temperature is increasing yearly and seasonally and precipitation is increasing in summer. Relative humidity is obviously decreasing. The results of this study can be used for the evaluation of the effects of climate change on water resources and the establishment of future water resources management technique development plan.
Development of the Pilot Island Information System for Efficient Management and Utilization of Islands
Choi, Yong-Bok ; Oh, Seung ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 51~56
DOI : 10.12672/ksis.2012.20.3.051
Many countries have interested in islands with their values in nature such as future sustainable resource and new expansion of marine territory. As territorial and cultural assets, these islands have been the source of our national competitiveness and, then, Korean government has initiated island management policy that provides a basis for the development and protection of islands. Consequently, spatial data and database for resource management have been required. In this sense, the purpose of this paper is to investigate the condition and status of various natural resources in Jeju islands. Jeju has 63 islands including 55 uninhabited islands. Then, an Island Information System(IIS) based on geographical information system(GIS) has been proposed. This ISS will provide not only a measure for effective resource management but also systematic services for releasing useful resource information.
GIS Based Analysis of Landslide Factor Effect in Inje Area Using the Theory of Quantification II
Kim, Gi-Hong ; Lee, Hwan-Gil ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 57~66
DOI : 10.12672/ksis.2012.20.3.057
Gangwon-do has been suffering extensive landslide dam age, because its geography consists mainly of mountains. Analyzing the related factors is crucial for landslide prediction. We digitized the landslide and non-landslide spots on an aerial photo obtained right after a disaster in Inje, Gangwon-do. Three landslide factors-topographic, forest type, and soil factors-w ere statistically analyzed through GIS overlap analysis between topographic map, forest type map, and soil map. The analysis showed that landslides occurred mainly between the inclination of
, and needleleaf tree area is more vulnerable to a landslide. About soil properties, an area with shallow effective soil depth and parent material of acidic rock has a greater chance of landslide.
A K-Nearest Neighbour Query Processing Algorithm for Encrypted Spatial Data in Road Network
Jang, Mi-Young ; Chang, Jae-Woo ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 67~81
DOI : 10.12672/ksis.2012.20.3.067
Due to the recent advancement of cloud computing, the research on database outsourcing has been actively done. Moreover, the number of users who utilize Location-based Services(LBS) has been increasing with the development in w ireless communication technology and mobile devices. Therefore, LBS providers attempt to outsource their spatial database to service provider, in order to reduce costs for data storage and management. However, because unauthorized access to sensitive data is possible in spatial database outsourcing, it is necessary to study on the preservation of a user's privacy. Thus, we, in this paper, propose a spatial data encryption scheme to produce outsourced database from an original database. We also propose a k-Nearest Neighbor(k-NN) query processing algorithm that efficiently performs k-NN by using the outsourced database. Finally, we show from performance analysis that our algorithm outperforms the existing one.
Design and Implementation of Space Time Point for Real-time Public Transportation Route Guidance
Kim, Soo-Ho ; Joo, Yong-Jin ; Park, Soo-Hong ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 83~93
DOI : 10.12672/ksis.2012.20.3.083
Recent environmental concerns have made interest in environment-friendly transportation means such as walking, biking, and public transportation. However, since it is difficult to move long distance by walking or biking, their scope of application is rather limited. On the other hand, public transportation can solve traffic congestion, a recent social issue, though its usability may depend on its time schedule. Currently available information services on public transportation in the Web do not reflect well such traits of the public transportation; thus, in some cases, they may provide wrong information to end users. To solve such problems and provide information based on timetable of public transportations, this paper proposes a STP(Space Time Point) data model. Unlike existing space-time data models, this model recognizes the bottommost element of an object as a point and structures these points in hierarchical way to define an object. In particular, It can make it possible to implement a variety of dynamic spatial objects changing object information according to time. An objective of this study is to design a STP model for bus and subway based on timetables of public transportation in Daejeon area and builds a system to provide path navigation. With the designed navigation function, a path from the Daejeon National Cemetery to Hannam University was searched by time slot. The result showed that the system provided different paths by time, as the system guided different paths when bus operation was limited in midnight. As existing data model could not provide such results, it is confirmed that the system can provide path navigation based on real-time traffic information. It is expected that based on such functionality, it is possible to provide additional functionalities by applying diverse data models such as real-time transport information or traffic history information.
Spatio-Temporal Query Processing System based on GML for The Mobile Environment
Kim, Joung-Joon ; Shin, In-Su ; Won, Seung-Ho ; Lee, Ki-Young ; Han, Ki-Joon ;
Journal of Korea Spatial Information Society, volume 20, issue 3, 2012, Pages 95~106
DOI : 10.12672/ksis.2012.20.3.095
Recently, with increase and development of the wireless access network area, u-GIS Service is supported in various fields. Especially, spatio-temporal data is used in the mobile environment for the u-GIS service. However, there is no standard for the spatio-temporal data used in different spaces, spatio-temporal data processing technology is necessary to makes interoperability among mobile u-GIS services. Furthermore, it is also necessary to develop the system of gathering, storing, and managing the spatio-temporal data in consideration of small capacity and low performance of mobile devices. Therefore, in this paper, we designed and implemented a spatio-temporal query processing system based on GML to manage spatio-temporal data efficiently in the mobile environment. The spatio-temporal query processing system based on GML can offer a structured storage method which maps a GML schema to a storage table and a binary XML storage method which uses the Fast Infoset technique, so as to support interoperability that is an important feature of GML and increase storage efficiency. we can also provide spatio-temporal operators for rapid query processing of spatio-temporal data of GML documents. In addition, we proved that this system can be utilized for the u-GIS service to implement a virtual scenario.