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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korea Spatial Information Society
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Journal DOI :
The Korean Association of Geographic Inforamtion Studies
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Volume & Issues
Volume 22, Issue 6 - Dec 2014
Volume 22, Issue 5 - Oct 2014
Volume 22, Issue 4 - Aug 2014
Volume 22, Issue 3 - Jun 2014
Volume 22, Issue 2 - Apr 2014
Volume 22, Issue 1 - Feb 2014
Selecting the target year
Tweet Acquisition System by Considering Location Information and Tendency of Twitter User
Choi, Woosung ; Yim, Junyeob ; Hwang, Byung-Yeon ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 1~8
DOI : 10.12672/ksis.2014.22.3.001
While SNS services such as Twitter or Facebook are rapidly growing, research for the SNS analysis has been concerned. Especially, twitter reacts to social issues in real-time so that it is used to get useful experimental data for researchers of social science or information retrieval. However, it is still lack of research on the methodology to collect data. Therefore, this paper suggests the tweet acquisition system by considering tendency of twitter user oriented location-based event and political social event. First the system acquires tweets including information of location and keyword about event and secure IDs for acquisition of political social event. Then we plan ID-analyzer to classify the tendency of users. In addition for measuring reliability of ID-analyzer, it acquires and analyzes the tweet by using high-ranked ID. In analyses result, top-ranked ID shows 88.8% reliability, 2nd-ranked ID shows 76.05% and ID-analyzer shows 77.5%, it shortens collection time by using minority ID.
A Study on Abroad Export Strategy by Country of Spatial Open Platform -Focused on the Kingdom of Cambodia and the Emirate of Abu Dhabi-
Kim, Kirl ; Jeong, Jin Do ; Lee, Jae Yong ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 9~21
DOI : 10.12672/ksis.2014.22.3.009
Recently the environment in geospatial information has conversed into the plaform. The platform based geospatial information contributes to save time and cost as well as maintain the consistency and stability in spatial data infrastructure. The Republic of Korea is now constructing and operating the spatial open platform called as the V-World(Virtual World), and searching for the possibility of its abroad export. The purpose of this study is to elicit the abroad export strategy by country of spatial open platform by comparing the cases of developing country, the Kingdom of Cambodia and newly developed country, the Emirate of Abu Dhabi, The Kingdom of Cambodia depends on foreign aids to develop the spatial data infrastructure and the Emirate of Abu Dhabi is inducing an advanced technology and high human power from overseas based on abundant oil money. This study establishes the abroad export strategy based on two country models such as Cambodia and Abu Dhabi by considering the characteristics in geospatial information, and suggests the ways of abroad export and the methods on fund raising for spatial open platform.
Accuracy Analysis of FKP for Public Surveying and Cadastral Resurvey
Park, Jin Sol ; Han, Joong-Hee ; Kwon, Jay Hyoun ; Shin, Han Sup ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 23~24
DOI : 10.12672/ksis.2014.22.3.023
NGII (National Geographic Information Institute) has been providing VRS (Virtual Reference Station) service so that could determine precise positioning in real time since 2007. However, since the VRS service has to maintain the connected status with VRS server, the number of users who can use VRS service are limited by capacity of VRS server. To solve this problem, NGII has been providing FKP (Virtual Reference Station) service using one way telecommunication from November 1, 2012. Therefore, it is predicted that the usage of FKP service will increase in public surveying and cadastral resurveying in the future. However, the studies with respect to analysis of FKP precision for applying to public surveying and cadastral resurveying is not conducted enough. In this study, to analyse the application possibility of FKP on the public surveying and cadastral resurveying, the two kind analysis were performed. First is the analysis of accuracy according to the configuration of reference station of FKP and VRS. One is consisted of same reference stations, another is consisted of different reference stations. Second is the accuracy anlalysis of horizontal and vertical positioning acquiring VRS and FKP data in various measurement environment based on VRS regulation. Result of first study, Positioning accuracy according to the configuration of the reference stations satisfies related regulation. However, accuracy of FKP in case of different reference stations is worse than in case of same reference stations.. The result of second test shows that the horizontal precision of FKP and VRS in good measurement environment satisfy the allowed precision. However, in some case, horizontal precision of FKP and VRS in poor measurement environment exceed the allowed precision. In addition, the number of exceeding the allowed precision in the FKP is more than the VRS. The vertical precision of the VRS satisfy related work provision. In conclusion, the result of this study shows that the FKP only in open area should be used for public survey and cadastral resurvey. Therefore the additional studies with respect to the improvement of FKP precision should be conducted.
A Comparative Analysis of Areal Interpolation Methods for Representing Spatial Distribution of Population Subgroups
Cho, Daeheon ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 35~46
DOI : 10.12672/ksis.2014.22.3.035
Population data are usually provided at administrative spatial units in Korea, so areal interpolation is needed for fine-grained analysis. This study aims to compare various methods of areal interpolation for population subgroups rather than the total population. We estimated the number of elderly people and single-person households for small areal units from Dong data by the different interpolation methods using 2010 census data of Seoul, and compared the estimates to actual values. As a result, the performance of areal interpolation methods varied between the total population and subgroup populations as well as between different population subgroups. It turned out that the method using GWR (geographically weighted regression) and building type data outperformed other methods for the total population and households. However, the OLS regression method using building type data performed better for the elderly population, and the OLS regression method based on land use data was the most effective for single-person households. Based on these results, spatial distribution of the single elderly was represented at small areal units, and we believe that this approach can contribute to effective implementation of urban policies.
Evaluating MRV Potentials based on Satellite Image in UN-REDD Opportunity Cost Estimation: A Case Study for Mt. Geum-gang of North Korea
Joo, Seung-Min ; Um, Jung-Sup ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 47~58
DOI : 10.12672/ksis.2014.22.3.047
The credible measurement, reporting and verification (MRV) is among the most critical elements in UN-REDD (United Nations programme on Reducing Emissions from Deforestation and forest Degradation in Developing Countries). This study is intended to explore MRV potential in terms of UN-REDD opportunity cost estimation using satellite image for Mt. Geum-gang of North Korea. A visual interpretation were conducted to evaluate MRV conditions by sub-dividing or decomposing the images with different pixel size into a three types of hierarchical tree structure that helps dealing with spatial variability within each subarea. The permanent record of standard satellite remote sensing system demonstrated its capability of presenting area-wide visual evidences of MRV conditions in Mt. Geum-gang (such as the identification of forested area, degradation trends for forest space, three types of hierarchical land-cover and land use tree structure, carbon density in the landscape). Satellite data could be accepted as legally binding proof when it comes to REDD opportunity cost estimation since several cases exist where remote sensing has been used as legal evidence in ICJ (International Court of Justice) and UN resolution. It doesn't seem very difficult to comply with MRV requirements for UN-REDD opportunity cost calculation due to the probative value of satellite data. It is anticipated that this research output could be used as a valuable reference for Korea-based enterprises exploring REDD project sites and the carbon traders to ensure MRV potentials using satellite image in UN-REDD Opportunity Cost estimation.
A Study on Relationship between National Policy Support and Recognized Competitiveness of Spatial Information Company
Jin, Heui Chae ; Choe, Byong Nam ; Han, Seon Hee ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 59~69
DOI : 10.12672/ksis.2014.22.3.059
Korea's spatial information companies have been supported by the government due to overcome the weak global competitiveness. This research examines possible causality between the request from the company and the policy support by the government. Structural equation model is used to analyze the recognized competitiveness and the supporting policy. The analysis result shows no statistically significant causality between the company's request and government's support. In other words, the current policies including subsidies, tax incentives, national certificates, and information channels do not impact the global competitiveness of a spatial information company. This research concludes that it is necessity to identify actual weaknesses of the company and to review the efficiency of the supporting policies to overcome those identified weaknesses.
Discussion on Formulation Process and Configuration of Fire-Fighting Vulnerable Zone Model
Kim, Seong Gon ; Chang, Eun Mi ; Choi, Gap Yong ; Kim, Hi Tae ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 71~77
DOI : 10.12672/ksis.2014.22.3.071
There are numbers of unpredictable risk factors in the disaster scenes such as fire, explosion and fail to early life-saving or holding the flames which can lead to massive damage. In particular, fire-fighters who arrive on the scene within 5 minutes after dispatching, have a limitation to get aware to the situation of scene fully, because of immediate deploy to disaster scene with limited information. This situation may lead to disturbance that fire-fighters perform effective fire-fighting activities, to put fire-fighter's life at risk by misjudge the situation. Previous domestic and International studies focused vulnerability for spatial area or features which can damage to life and property in the event of anticipated. In this study, we have been developed fire-fighting vulnerable zone model that can analyze comprehensively hindrance factors for fire-fighting activities targeting whole life cycle of fire-fighting activities from dispatch to fire suppression or life-saving. In addition, we have been given shape to finality and applicability for our model by defining the new concept of fire-fighting vulnerable zone which can be distinguished from the concept of fire vulnerable area in previous studies. The results of this study can be used to analysis fire-fighting vulnerable zone type analysis, establish fire-fighting policies and improve the performance of decision-making process.
Utilization and Excavation Practices of Fire-Fighting Vulnerable Zone Model
Choi, Gap Yong ; Chang, Eun Mi ; Kim, Seong Gon ; Cho, Kwang-Hyun ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 79~87
DOI : 10.12672/ksis.2014.22.3.079
In order to foster rapid disaster response and public life protection, National Emergency Management Agency has been trying to spread 'Emergency Rescue Standard System' on a national scale since 2006. The agency has also intensified management of firefighter's safety on disaster site by implementing danger predication training, specialized training and education and safety procedure check as a part of safety management officer duties. Nevertheless, there are limitations for effective fire fighting steps, such as damage spreading and life damage due to unawareness of illegal converted structure, structure transformation by high temperature and nearby hazardous material storage as well as extemporary situation handling endangered firefighter's life. In order to eliminate these limitations there is a need for an effort and technology application to minimize human errors such as inaccurate situational awareness, wrong decision built on experience and judgment of field commander and firefighters. The purpose of this study is to propose a new disaster response model which is applied with geospatial information. we executed spatial contextual awareness map analysis using fire-fighting vulnerable zone model to propose the new disaster response model and also examined a case study for Dalseo-gu in Daegu Metropolitan City. Finally, we also suggested operational concept of new proposed model on a national scale.
Representation of Population Distribution based on Residential Building Types by using the Dasymetric Mapping in Seoul
Lee, Sukjoon ; Lee, Sang Wook ; Hong, Bo Yeong ; Eom, Hongmin ; Shin, Hyu-Seok ; Kim, Kyung-Min ;
Journal of Korea Spatial Information Society, volume 22, issue 3, 2014, Pages 89~99
DOI : 10.12672/ksis.2014.22.3.089
The aim of this study is to represent the residential population distribution in Seoul, Korea more precisely through the dasymetric mapping method. Dasymetric mapping can be defined as a mapping method to calculate details from truncated spatial distribution of main statistical data by using ancillary data which is spatial data related to the main data. In this research, there are two types of data used for dasymetric mapping: the population data (2010) based on a output area survey in Seoul as the main data and the building footprint data including register information as ancillary spatial data. Using the binary method, it extracts residential buildings as actual areas where residents do live in. After that, the regression method is used for calculating the weights on population density by considering the building types and their gross floor areas. Finally, it can be reproduced three-dimensional density of residential population and drew a detailed dasymetric map. As a result, this allows to extract a more realistic calculating model of population distribution and draw a more accurate map of population distribution in Seoul. Therefore, this study has an important meaning as a source which can be applied in various researches concerning regional population in the future.