• Journal of Korean Society of Disaster and Security
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• v.16 no.2
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• pp.1-13
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• 2023

As interest in urban safety has increased since COVID-19, various institutions have developed and used indicators that evaluate the safety city model. Yongsan-gu was ranked No. 1 in 2021 by Social Safety Index evaluation and was selected as the safest city in Korea. However, the Itaewon disaster in Yongsan-gu in 2022 caused many casualties. The study of indicators for evaluating cities' safety was necessary. This study aims to examine domestic and foreign safe city models and review the differences between each model and the indicators used to evaluate safe cities. As a result of collecting 11 safe city models and analyzing each evaluation index, safe city models can be classified into program-based safe city models, such as the World Health Organization's International safe community and the UN Office for Disaster Risk Reduction's International Safe city. Considering the diversification of threats to safety, it is reasonable to comprehensively consider digital security, health safety, infrastructure safety, personal safety, environmental safety, traffic safety, fire safety, crime safety, life safety, suicide, and infectious diseases when evaluating safe cities as evaluation parameters.

• Spatial Information Research
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• v.9 no.2
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• pp.325-340
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• 2001

This research is to construct more useful Geo-spatial data by building spatial data to three dimensional and utilize the database effectively for development of application, maintenance and management program, and application technology, which is on going based on “Haeundae three dimensional database construction project”. Furthermore, the acquisition of geographic information data and the technological improvement of effective construction would be the important factors to judge the qualitative reputation of GIS. Above all, studies to create accurate data and overcome the error limitation are much more important than any other thing. Final form of Spatial Data to materialize efficient GIS(Geographic Information System) must be three dimensional spatial data which has attribute data, actual concept and numerical value of real world. In connection to that, development is on the move to improve building technique of useful spatial data and digitalize the entire country in cryberspace. $\ulcorner the cyber country lrcorner$is designed to mange the entire country systematically. This simulation would be able to cover administration of government institution, public service, corporate business and even the public life in the cyeberspace though the computer. Materialization of efficient GIS and establishment of condition as technically strong nation through the early realization of $\ulcorner the cyber country lrcorner$will provide a great opportunity to open up the global market with exportation of advanced technology.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.5
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• pp.919-939
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• 2021

As a next-generation communication technology, 5G networks are capable of handling large amounts of traffic based on higher speeds, shorter communication delays, and higher connectivity compared to 4G networks. In this 5G network environment, base stations are installed all over the city at high density due to their characteristics, and are connected to user terminals to provide services. Therefore, if the base station is damaged by a malicious attacker, it is expected to cause great damage to users and society as a whole. So the need for secure communication equipment such as 5G base stations has emerged. Therefore, in this paper, we propose the security functional requirements derived using threat modeling, a systematic methodology for 5G base stations, and the security assurance requirements at the level that can cope with the backdoor issues. The security requirements proposed in this paper can be used for base station design and development to construct a secure network environment as a security evaluation standard for 5G base stations.

• Convergence Security Journal
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• v.22 no.1
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• pp.129-134
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• 2022

A smart platform is defined as an evolved platform that realizes physical and virtual space into a hyper-connected environment by combining the existing platform and advanced IT technology. The hyper-connection that is the connection between information and information, infrastructure and infrastructure, infrastructure and information, or space and service, enables the realization and provision of high-quality services that significantly change the quality of life and environment of users. In addition, it is providing everyone with the effect of significantly improving the social safety net and personal health management level by implementing smart government and smart healthcare. A lot of information produced and consumed in these processes can act as a factor threatening the basic rights of the public and individuals by the informations themselves or through big data analysis. In particular, as the smart platform as a core function that forms the ecosystem of a smart city is naturally and continuously expanded, it faces a huge security burden in data processing and network operation. In this paper, platform components as core functions of smart city and appropriate security threats and countermeasures are studied.

• Journal of the Korean Data and Information Science Society
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• v.14 no.3
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• pp.511-523
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• 2003

Internet has become an important part of teenagers' life and has changed the life style of teenagers. Internet can be an useful tool for educating teenagers and also can be misused as a cyberspace for social problems. Recognizing that teenagers spend most of their free time enjoying internet and they form their own new life culture, it is needed to develop practical strategies for maximizing the positive effect of internet on the teenagers' culture. The purpose of this research is to suggest a desirable way for forming teenagers' healthy internet-based culture. The research was conducted by the survey of teenagers in the city of Pyongtaek on their use of internet and their problems The survey shows that most of teenagers are using internet in order to release the stress and most of them are hooked on it. It also indicates that cyber police and volunteer groups should be formed to help the desirable teenagers' internet-based culture.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.177-180
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• 2008

Many researches have been tried to extract building models and created a 3D cyber city from LiDAR data. In this paper, the approach of extracting complex building by using airborne LiDAR data combined with airborne orthoimagery has been performed. The pseudo-building elevations were derived from modified discrete return LiDAR data. Based on information property of the pseudo-height, building features could be extracted. The results of this study indicated the improvement of building extraction.

• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.584-586
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• 2007

3D virtual modeling such as creation of a cyber city or landscape, or making a 3D GIS requires realistic textures. Automatic texture extraction using close range images is not yet efficient or easy in terms of data acquisition and processing. In this paper, common problems associated with automatic texture extraction from aerial photographs are explored. The ZI-buffer, which has depth and facet ID fields, is proposed to remove hidden pixels. The ZI-buffer algorithm reduces memory burden and identifies visible facets. The correct spatial resolution for facet gridding is tested. Error pixels in the visibility map were removed by filtering.

• Journal of Digital Convergence
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• v.5 no.2
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• pp.91-98
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• 2007

Destination marketing organizations (DMO) have been building up the cyber city in the WWW. Website for DMO is a core channel to promote regional attractions. This research suggests the issue of criteria for evaluating DMO's performance in the Internet. The method of evaluation focuses on the structure in perspective of linkage based on small world theory and direct network. Convention & Visitors & Bureau (CVB) in tourism and travel industry playa role to promote and held the international meeting and exhibitions. CVB's websites evaluated according to web link structure and performance.

• Journal of Industrial Convergence
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• v.15 no.1
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• pp.33-42
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• 2017

The purpose of this study is to identify the current situation of bicycle rental center in Seoul through big data analysis and to find ways to improve it. For this purpose, we analyzed the open data set provided by the Seoul Metropolitan Government and the typical data which is the citizen opinion of the customer center of the Seoul City bicycle. As the result, it was found that it is better to install a bicycle rental shop in Gangdong-gu, Seoul.

• 한국정보교육학회:학술대회논문집
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• 2006.01a
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• pp.121-126
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• 2006

최근 사이버교육의 필요성이 대두됨에 따라서 초 중등에서는 사이버가정학습체제를 도입하게 되었다. 하지만 사이버가정학습은 학생의 자발성에 기초하여 학습이 이루어지기 때문에 성공적인 운영을 위해서는 학습자의 참여도를 높이는 것이 중요하다. 이에 본 연구에서는 학습자의 참여도와 관련된 변인이 무엇인지를 밝혀보고, 이를 통해 학습자의 참여도를 높이기 위한 방안을 제안해 보았다. 학습자의 참여도와 관련있는 변인은 다음과 같다. 첫째, 학습자 내적변인 중 인지적 성향, 정좌소양수준, 자기주도적학습력, 참여목적, 사이버가정학습에 대한 인식이었다. 둘께, 학습자 외적변인 중 사이버가정학습장, 사교육투자시간, 학급담임의 내용확인도, 이용의 편의성이었다 셋째, 사이버교수활동 중 상호작용성, 과제제시빈도, 학습상담유형, 보상이었다. 넷째, 학부모변인 중 참여인지, 도움도, 내용확인 정도가 참여도에 유의한 영향을 준다고 나타났다. 이상과 같은 결과에 비추어 다음과 같은 방안을 제안해 보았다. 콘텐츠 측면에서 살펴보면, 다양한 양질의 콘텐츠가 제공되어야 한다. 콘텐츠 내에서 학생간이 교류가 이루어질 수 있어야하며, 정보탐색이나 정보교류를 이용한 학습문제나 과제가 제시되어야 한다. 운영상의 측면에서 살펴보면, 온라인과 오프라인의 교류와 협력을 위한 장이 마련되어야 하며, 시스템 환경을 최적화해야한다. 과제물도 일괄 처리할 수 있는 시스템이 요구되며, 가정과 사이버가정학습의 연결을 위한 시스템이 필요하다. 장애처리전담반의 운영도 요구된다. 필요한 기능을 중심으로 한 가벼운 시스템으로 구축해야 하며, 상담시스템의 구축이 필요하다. 법적 제도적 측면에서 살펴보면, 가정, 학교, 지역도서관 등에 사이버가정학습을 할 수 있는 장소가 마련되어야 한다. 학습자의 참여도에 대한 적절한 보상이 필요하다. 사이버가정학습을 학교수업의 일부분으로 인식할 수 있도록 제도적 뒷받침이 요구되며, 학부모 튜터제 도입도 요구된다. 이상과 같은 대안들을 신중히 고려하여 차근차근 준비해 간다면 앞으로의 사이버가정학습은 무한한 발전을 계속해 나갈 수 있을 것이다.