• Journal of the Economic Geographical Society of Korea
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• v.15 no.3
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• pp.404-423
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• 2012

This study is aimed at exploring the impact of the characteristics of the firms on firm's networking. We develop a framework theorizing firm's networking according to sales, size, research facility, the percentage of R&D staff to total employees, the percentage of R&D investment to total sales, the number of the certification, the intention of attending seminars, the experience of participating in the government subsidy program. The results of the analysis show that research capacity, openness to a variety of information source, the experience of participating in the government subsidy program are significant in determining the firm's networking. The government needs to encourage the firms to improve their research capacity, and to train the coordinators to help the firms get higher openness to a variety of information source, use the government subsidy program.

• Journal of Korean Society for Geospatial Information Science
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• v.10 no.4 s.22
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• pp.61-67
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• 2002

This study is aimed to suggest a practical use of GPS continuous stations by conducting the precision analysis using its data. Currently dozens of continuous stations have been installed and operated since the first GPS continuous station built by KAO(Korea Astronomy Observation) in 1985. The utilization of the surveyed information, however, has been under-developed regardless of a significant investment, which leads the necessity of utilization plan. The results of this study show that the mis-closures between the two points at University of Incheon and Suwon/Seoul stations of NGI(National Geography Institute), Seoul stat ion of KAO, and Incheon station of MOGAHA(Ministry Of Government Administration and Home Affairs) are 0.0206m, 0.0118m, 0.0129m and 0.0024m respectively. It indicates that the analyzed mis-closures were less than the allowed values ill the primary/secondary control point specification for GPS surveying, i.e. a mis-closure less than 30mm for the distance less than 30km and a mis-closure less than $IPPM{\times}D(km)$ for the distance greater than 30km.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.425-425
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• 2017

최근 기후변화의 영향으로 태풍과 국지성 집중호우가 빈번하게 발생하면서 인명 및 재산피해가 증가하고 있다. 이러한 자연재해를 줄이기 위하여 국가적 차원에서 피해예측 및 피해규모를 정확하게 산정하는 시스템 구축이 필요한 시점이다. 해외 주요국에서는 풍수해 재해통계 DB를 구축하고, 이를 피해예측시스템에 적용하여 피해규모를 산정함으로써 풍수해 재난관리에 활용하고 있다. 그러나 국내의 경우, 재해정보 피해통계가 공공시설에 한정되어 있거나 단순 복구비의 직접관리 수준에 그치고 있는 등 피해예측기술 및 시스템 개발 수준은 초기단계에 머물고 있다. 따라서 재해정보 기본통계를 정비하고 재난대응 단계별 의사결정 지원에 활용할 수 있는 풍수해 피해예측 및 피해액 산정 시스템을 구축할 필요가 있다. 본 연구에서는 풍수해피해예측시스템 구축을 위한 핵심 기술요소 도출하고자 한다. 이를 위하여 사전단계인 재해정보 기본통계 DB구축 방안을 검토하여 재해연보 개선안을 제시하였다. 먼저, 피해예측시스템 구축에 필요한 필수 DB를 파악하고 기존 재해연보의 활용성을 검토하였다. 검토 결과를 바탕으로 재해연보의 문제점을 파악하고 피해예측시스템에 적용이 가능한 기초 DB를 구축하기 위하여 재해연보의 개선방안을 도출하였다. 다음으로 미국에서 개발한 HAZUS-MH 시스템의 피해예측 관련 기술정보를 분류하고, 국내에서 개발 중인 피해예측시스템과 비교분석하여 핵심 기술요소를 도출하였다. 본 연구의 결과는 다음과 같다. 첫째, 풍수해 피해예측시스템의 핵심요소로서 세분화된 재해통계 DB의 구축이 필수적이다. 재해연보를 기초 DB로서 활용하기 위하여 재해항목 구체화 및 자료형태 다양화 등 재해연보의 개선이 시급하다. 둘째, 피해예측시스템 개발을 위한 핵심기술 요소는 (1)함수(모형)의 개발, (2)지리정보시스템(GIS)과의 연계, (3)피해예측시스템 구축 및 모형분석을 위한 컴퓨팅기술, (4)실시간 관측기술 및 강우량 사전예측 등으로 도출이 되었다. 이와 같이 도출한 핵심 기술요소를 바탕으로 국가 R&D 및 재난안전분야의 기술개발을 추진하여야 한다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.27 no.6
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• pp.639-647
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• 2009

In line with the rapid settlement of information society, the demand for geospatial information and its applications are dramatically increasing. The Project of National Geographic Information System(NGIS) is actively on going to meet up-to-dateness and accuracy of geospatial data. It is fact that the public interest in environmental issues is increasing than ever in accordance with the restoration of the four major rivers, core project of Green New Deal Policy, and the event of the Ramsar General Meeting. Because the Nakdong River Estuary is a place of great importance in both aspects of wetland and environment conservation, a variety of researches related to this area are progressing. Although artificial developments and natural phenomena are rapidly changing the topography and ecosystem of this area, the effort to build topographic DB for change monitoring is very slow. This study describes a Lidar surveying project over the restored wetland Eulsukdo, the southermost part of the Nakdong River, to establish precise topographic DB throughout producing 3D topographical maps and wetland classification maps. The results of this study will make a large contribution to the systematic maintenance and management for the restored Eulsukdo wetland.

• Journal of Korean Society for Geospatial Information Science
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• v.23 no.1
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• pp.3-14
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• 2015

As buildings in the downtown area, such as the complex building connected to the skyscraper and the underground facility, have become large and complex, the range of target domain of the space information service is rapidly expanding to the interior space; it is considered that this change will create various demands of service such as the indoor geospatial information base safety, the management of facility, and the interior navigation in the future, along with spread of mobile devices and development of IT technology. As for the indoor geospatial information, however, there is no certification standard of the established indoor geospatial information data quality, so preparing the certification standard is urgent. Thus, this study reviewed foreign and domestic research cases and prepared measures for quality verification of the indoor geospatial information to conduct a verification test of the Yeongdeungpo Station indoor geospatial information, established in 2014. As a result, through the verification test of the method and standard of the indoor geospatial information quality certification suggested by this research, it was identified that the uniform and higher quality data could be classified, and the types of error high frequently occurring could be investigated. These results are expected to be utilized as the basic data for establishing quality certification system for the indoor geospatial information in the future.

• Journal of Korean Society for Geospatial Information Science
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• v.14 no.4 s.38
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• pp.11-18
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• 2006

In this paper, airborne LiDAR data were evaluated in horizontal and vertical accuracy. By using zigzag scanning type of LiDAR, GCPs are not tested directly. So points around GCPs were used in this evaluation. Building corner points were made from LiDAR's building planar and compared with ground surveyed GCPs, in horizontal accuracy test. Its accuracy shows 19cm average and 21cm RMSE and 15 points were within 20cm among 16 points. In vertical accuracy test, 41 GCPs were used and it shows 11cm average and 14cm RMSE and 75% of GCPs were within 15cm. This could be a criterion in topographic map modification and basic geographic DB and 3D data construction using airborne LiDAR data.

• 한국신재생에너지학회:학술대회논문집
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• 2011.11a
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• pp.59.2-59.2
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• 2011

This study presents a new method for coupling ArcGIS (popular GIS software) with TRaNsient SYstems Simulation (TRNSYS, reference software for researchers and engineers around the world) to use capabilities of the 4 and 5-parameter PV array performance models within the ArcGIS environment. Using the validated and industry-proven solar energy simulation models implemented in TRNSYS and other built-in ArcGIS functionalities, dynamic characteristics of distributed PV potential in terms of hourly, daily or monthly power outputs can be investigated with considerations of diverse options in selecting and mounting PV panels. In addition, the proposed method allows users to complete entire procedures in a single framework (i.e., a preliminary site survey using 3D building models, shading analyses to investigate usable rooftop areas with considerations of different sizes and shapes of buildings, dynamic energy simulation to examine the performances of various PV systems, visualization of the simulation results to understand spatially and temporally distributed patterns of PV potential). Therefore tedious tasks for data conversion among multiple softwares can be significantly reduced or eliminated. While the programming environment of TRNSYS is proprietary, the redistributable executable, simulation kernel and simulation engine of TRNSYS can be freely distributed to end-users. Therefore, GIS users who do not have a license of TRNSYS can also use the functionalities of solar energy simulation models within ArcGIS.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.3D
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• pp.375-383
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• 2006

Nationals Assembly have experiencing unbalance between capacities and demand of parking facilities because of increasing parking demand, free parking policy, long term parking and passenger car use of workers, usage of neighborhood office workers and visitors. The lack of parking facilities cause illegal parking on the street inside and outside of National Assembly which result in the disorder of parking culture. To solve these parking problems, this study suggest parking management system to enter the National Assembly for the short term and charging parking fee, operation by private company, constructing parking building by abrogation of upper limit and construction of ground park, and so on. The study, also, suggested to strengthen weekday or 10 day shift system, to increase shuttle bus and commuting bus, to activation of Han River waterside parking area, public transportation with those new parking management system. For the conclusion, the parking problems of National Assembly should be focused more on parking management than the parking facilities supply.

• Journal of the Korean Association of Geographic Information Studies
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• v.17 no.1
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• pp.35-49
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• 2014

In order to understand the impacts of surface characteristics and the distance from the urban heat island center to suburban areas on the mean night time air temperature, we analyzed GIS and AWS observational data. Spatial distributions of mean night time air temperature during the summer and winter periods of 2004-2011(six years) were utilized. Results show that the temperature gradients were different by distance and direction. We found high correlation between mean night-time air temperature and artificial land cover area within 1km and 200m radii during both summer(R=0.84) and winter(R=0.78) seasons. Regression models either from 1km and 200m land surface data explained the distribution of night-time temperature equally well if the input data had sufficient resolution with detailed attribute including building area and height.

• Journal of the Korean Association of Geographic Information Studies
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• v.23 no.2
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• pp.95-105
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• 2020

In order to promote efficient coastal management, it is important to continuously monitor the characteristics of the terrain, which are changed by various factors. In this study, time series UAV images were taken of Gyeokpo beach. And the standard deviation of ±11cm(X), ±10cm(Y), and ±15cm(Z) was obtained as a result of comparing with the VRS measurement performance for UAV position accuracy evaluation. Therefore, it was confirmed that the tolerance of the digital map work rule was satisfied. In addition, as a result of monitoring the erosion and sedimentation changes using the DSM(digital surface model) constructed through UAV images, an average of 0.01 m deposition occurred between June 2018 and December 2018, and in December 2018 and June 2019. It was analyzed that 0.03m of erosion occurred. Therefore, 0.02m of erosion occurred between June 2018 and June 2019. From the topographical change analysis results, the area of erosion and sediment height was analyzed, and the area of erosion and sedimentation was widely distributed in the ±0.5m section. If we continuously monitor the topographical changes in the coastal regions by using the 3D terrain modeling results using the time series UAV images presented in this study, we can support the coastal management tasks such as supplement or dredging of sand.