• Spatial Information Research
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• v.23 no.6
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• pp.1-8
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• 2015

This study aims to suggest key strategy for successful establishment of LIS (Land Information System). Survey questionnaires on casual and outcome factors for LIS establishment are distributed to the LIS users and developers. Analysis results show that user participation has statistically significant, positive effect on business efficiency, user satisfaction, data sharing and services. Government support and developer technical skill are appeared to be the two important factors for improving the business efficiency and user satisfaction of LIS. Based on such results, this study suggests different strategies for successful development and implementation of LIS, including the definition of users' role and their proactive participation, visionary guide and support by government, cooperative relationship based government support and user participation, sufficient technology for land informatization. This study contributes to systematic organization of situational factors of South Korea's LIS towards its achievements. The results of this study could also be utilized for strengthening global competitiveness of the domestic geospatial information firms, in particular in supporting the development of land information projects in developing countries.

• Journal of Internet Computing and Services
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• v.21 no.6
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• pp.57-69
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• 2020

As more people share their opinions in online communities, such as Internet portals and social networking services, more opinions are manipulated for the benefit of particular individuals and groups. In particular, when manipulations occur for political purposes, they influence election results as well as government policies and the quality of life. This type of manipulation has targeted the general public, and their analysis and detection has also focused on such manipulation. However, to more efficiently spread propaganda, recent manipulations have targeted common interest groups(e.g., a group of those interested in real estate) and propagated information whose content and style are customized to those groups. This work characterizes such manipulations on common interest groups and proposes method to detect manipulations. To this end, we collected and analyzed opinions posted on 10 common interest groups before and after an election. As a result, we found that manipulations on common interest groups indeed occurred and were gradually increasing toward the election date. We also proposed a detection system that examines individual opinions, their authors, and their collaborators. Using the collected opinions, we demonstrated that the proposed system can accurately classify more than 90% of manipulated opinions and that many of these opinions were posted by multiple collaborators. We believe that regular audits of opinions using the proposed system can quickly isolate manipulations and decrease their impact. Moreover, the proposed features can be used to identify manipulations in domains other than politics.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.1116-1120
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• 2006

하천주변 저지대에 주택이나 공장 등의 시설물 집중과 산지의 개발 및 인구 집중으로 인한 도시화 지역의 증가로 홍수 피해는 더욱 커지고 있다. 특히, 상습침수지구의 주민들은 항상 재해로부터 위험을 느끼고 있으므로 새로운 재해관리체계를 구축하여 이에 대한 확고한 대책이 필요하다. 최근 인터넷 사용의 증가로 많은 사용자들이 웹을 통해 다양한 데이터를 공유하고 있으며, 이러한 추세는 더욱 더 증가할 것이다. 인터넷은 다양한 정보를 네트워크를 통해 사용자에게 실시간으로 제공하고 있으며, 통신기술의 발전, 네트워크 통합화 속에서 그 내용과 방식이 더욱 다양해지고 있다. GIS분야에 있어서도 인터넷 네트워크를 이용하여 분산되어 있는 많은 조직이나 사용자들에게 그 기능과 서비스를 제공하는 추세로 바뀌고 있다. Internet GIS는 원격 지리정보 데이타에 대한 접근, 전송, 분석 및 GIS를 표현하는 수단으로 인터넷을 이용하는 특별한 GIS 도구이다. Internet GIS는 전통적인 GIS 소프트웨어가 가지고 있는 대부분의 기능은 물론 인터넷 및 그와 관련된 WWW 및 FTP 프로토콜의 장점을 가지는 부가적인 기능들을 포함할 수 있다. 이들 부가적인 기능은 원격 데이타 및 응용 프로그램의 교환, 지역 컴퓨터에 GIS 응용 프로그램 없이 GIS 분석 기능을 수행, 인터넷상에서 상호작용하는 지도 및 데이타를 표현하는 기능들을 포함한다. Internet GIS는 객체지향적이고 상호운영적이며, 분산적이라는 주요한 특징을 갖는다. 인터넷에서 각각의 GIS 데이타 및 기능성은 하나의 객체로서 서로 다른 서버에 위치하며 필요시 조합 또는 통합되어 운영된다. Internet GIS를 이용한 상습침수지구 지역정보 제공사이트를 구축하기 위해서는 인터넷으로 서비스 할 수 있는 인터넷용 상습침수지구 GIS기본도를 구축이 필요하다. 인터넷 서비스를 위한 상습침수지구 기본도는 또 다른 형태의 주제도라고 볼 수 있으며, 이를 구축하기 위해서는 자료변환 및 가공이 필요하다. 즉, 각 상습침수지구에 필요한 지형도는 국립지리원에서 제작된 1:5,000 수치지형도가 있으나 이는 자료가 방대하고 상습침수지구에 필요하지 않은 자료들을 많이 포함하고 있으므로 상습침수지구의 데이터를 인터넷을 통해 서비스하기 위해서는 많은 불필요한 레이어의 삭제, 서비스 속도를 고려한 데이터의 일반화작업, 지도의 축소.확대 등 자료제공 방식에 따른 작업 그리고 가시성을 고려한 심볼 및 색채 디자인 등의 작업이 수반되어야 하며, 이들을 고려한 인터넷용 GIS기본도를 신규 제작한다. 상습침수지구와 관련된 각종 GIS데이타와 각 기관이 보유하고 있는 공공정보 가운데 공간정보와 연계되어야 하는 자료를 인터넷 GIS를 이용하여 효율적으로 관리하기 위해서는 단계별 구축전략이 필요하다. 따라서 본 논문에서는 인터넷 GIS를 이용하여 상습침수구역관련 정보를 검색, 처리 및 분석할 수 있는 상습침수 구역 종합정보화 시스템을 구축토록 하였다.

• The Journal of the Korea Contents Association
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• v.21 no.8
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• pp.546-558
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• 2021

This study focused on analyzing the contents of social big data produced in the online space, dealing with issues related to food in the community in the context of COVID-19. First, this study analyzed food-related issues that spread through regional websites and online community(cafes) after social distancing was implemented due to COVID-19. Next, this study analyzed the contents of food-related issues that spread through media news, SNS, and portals. As a result, there were more food-related posts on the homepages of other regions compared to the metropolitan areas such as Seoul and Gyeonggi, but in the case of online communities, there were more food-related issues in online communities registered in Seoul and Gyeonggi regions. Food-related keywords in regional online communities mainly contained content related to the local economy. In the media articles, SNS, and search portal issues, content that can be discussed in the consumption process of local community food-related policies, information, and products mainly appeared. Based on the results of the study, it was found that there is no specialized information sharing system for each community, that online communities can contribute to providing food information applicable to reality, and that it is possible to verify the performance of regional food policies through social media.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.5
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• pp.1184-1192
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• 2008

There have been a large number of trials of the experimental education in engineering using virtual laboratories implemented in virtual space, namely on the Web. Although virtual education is regarded as an effective educational means that overcomes the limit of time and space and bring high teaming effects, the problem of lack of reality must be solved. The present study proposed and implemented a real-time remote laboratory as a solution for the problem of lack of reality in virtual education. The remote laboratory provides functions with which learners can perform experiments by remote-controlling circuits and equipment related to experiments and practices on the Web and gets data and image information, so through it learners can make realistic experiments at any time and in any place. The remote laboratory module based on Internet open sources such as JAVA Web start technology, FTP technology and Telnet technology in server-client environment can be implemented at low cost, and is effectively applicable to engineering experiment education in various areas related to real-time hardware control.

• Geophysics and Geophysical Exploration
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• v.6 no.1
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• pp.1-6
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• 2003

As a consequence of geophysical surveys for large-scale constructions and ground investigations, huge amount of geophysical data are collected. However, due to the lack of the systematic management of such data, most of them are used temporarily and kept in dead storage, which in turn leads the abuse of social properties. To propose the solution of this kind of problem, geophysical data are kept in database using geographical information system (GIS). The introduction of GIS in geophysical data management allows the efficiency in data management and user-friendliness in data access. This data management system is especially appropriate for the many geological companies and the government organizations in systematic data management and sharing so that the time ,md financial expenses are greatly reduced. This system even provides the basic data services for the efficient development and conservation of the surface and underground spaces.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.5
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• pp.151-155
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• 2017

With the rapid growth of the up-to-date wireless network and Internet technologies, huge and various types of things around us are connected to the Internet and build the hyper-connected society, and lots of smart applications using these technologies are actively developed recently. IoT connects human, things, space, and data with various types of networks to construct the hyper-connected network that can create, collect, share and appling realtime information. Furthermore, most of the smart applications are concentrated on the service that can collect and store realtime contexts using various sensors and cloud technology, and provide intelligence by making inferences and decisions from them nowadays. In this paper, we design a smart application that can accurately control and process the current state of the specific context in realtime by using the state-of-the-art ICT techniques such as various sensors and cloud technologies on the IoT based mobile computing environment.

• Journal of Korea Society of Industrial Information Systems
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• v.21 no.3
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• pp.35-46
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• 2016

Social network services (SNS) that help to build relationship network and share a particular interest or activity freely according to their interests by posting comments, photos, videos,${\ldots}$ on online communities such as blogs have adopted and developed widely as a social phenomenon. Several researches have been done to explore the pattern and valuable information in social networks data via text mining such as opinion mining and semantic analysis. For improving the efficiency of text mining, keyword-based approach have been applied but most of researchers argued the limitations of the rules of Korean orthography. This research aims to construct a database of non-standard Korean words which are difficulty in data mining such abbreviations, slangs, strange expressions, emoticons in order to improve the limitations in keyword-based text mining techniques. Based on the study of subjective opinions about specific topics on blogs, this research extracted non-standard words that were found useful in text mining process.

• Convergence Security Journal
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• v.17 no.1
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• pp.101-109
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• 2017

The Internet of things is a system that connects and communicates all sorts of things such as people, objects, and data. It's to create and share information by its own each other. It can be used to enhance the function of private security and has brought about innovative development of private security. The Internet of things is a system that allows devices connected to the Internet to communicate independently of people-objects, objects-objects connected to the Internet. That and can be used in many industries, especially in the private security sector, its value is high. The use of the Internet of things to private security sector can reinforce security zones with always-on surveillance systems, also be enhanced by its own preparedness and response to the situation. However, this study will discusse the application and development of private security in the Internet of things. The practical application of the virtual space is an immediate task and it is also an essential factor in securing security.

• Spatial Information Research
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• v.19 no.6
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• pp.29-41
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• 2011

Recently, the importance of systematic Land-monitoring has been emphasized. The existing Law does not include any definitions or regulations of monitoring. Although there exist laws regarding examining and measuring the current status of region, utilization, distribution, share, security and management of the data need to be improved. In order to upgrade the Land-monitoring system, several tasks such as terms, building cycle, forms, scope, management team should be well-defined. In this study, problems of the Land-monitoring is investigated by understanding the legislation in the land planning system and its operating system. The setting of the land-monitoring concept in Framework Act on the National Land and revision of specific laws in this field were introduced. Finally, new Land-monitoring legislation covering the improvement of the data-acquisition and co-utilization were suggested.