• Journal of the Korean Association of Geographic Information Studies
• /
• v.25 no.1
• /
• pp.150-163
• /
• 2022

Recently, the gated community has been increasing due to various reasons such as demand for differentiated areas and security, but various problems have been raised, including regional conflicts, traffic restrictions and disconnection of surrounding areas. Therefore, this study empirically considered what kind of spatial effect the gated community has on the surrounding area by analyzing the vitality using floating population big data and analyzing pedestrian accessibility using network analysis and social network analysis. As a result, it was found that the overall vitality in the study area was greatly affected by the land use and the building use. However, focusing on apartment complexes, even in the same land use, when the form of the complex is open to the outside, there is a lot of floating population, so the vitality is high. In terms of accessibility, assuming that the gated community is open, it was found that as the physical connectivity improved, there were more roads for pedestrians to choose from, and the accessibility improved as traffic and exchanges occurred in the disconnected space. The value of improving property rights and residential environment is also precious, but it is necessary to review how to reflect the improvement of local permeability in enhancing the publicness of cities and the value and direction of communities that can coexist with the region.

• Korean Journal of Environment and Ecology
• /
• v.36 no.6
• /
• pp.651-661
• /
• 2022

Plants social network analysis, which combines plants society and social network analyses, is a new research method for understanding plants society. This study was conducted to investigate the relationship between species, using plant social network analysis targeting Taejongdae in Busan, and build basic data for management. Taejongdae, located in the warm temperate forest in Korea, is a representative coastal forest of Busan Metropolitan City, and the Pinus thunbergii-Eurya japonicacommunity is widely distributed. This study set up 100 quadrats (size of 100m²each) in Taejongdae to investigate the species that emerged and analyzed the interspecies association focusing on major species. Based on the results, a sociogram was created using the Gephi 0.9.2, and the network centrality and structure were analyzed. The results showed that the frequency of appearance was high in the order of P. thunbergii, E. japonica, Quercus serrata, Sorbus alnifolia, Ligustrum japonicum, and Styrax japonicusand that many evergreen broad-leaved trees appeared due to the environmental characteristics of the site. The plants social network of Taejongdae was composed of a small-scale network with 50 nodes and 172 links and was divided into 4 groups through modularization. The succession sere identified through a sociogram confirmed that the group that include P. thunbergiiand E. japonicawould progress to a deciduous broadleaf community dominated by Q. serrataand Carpinus tschonoskii, using hub nodes such as Prunus serrulataf. spontaneaand Toxicodendron trichocarpum. Another succession sere was highly likely to progress to an evergreen broad-leaved community dominated by Machilus thunbergiiand Neolitsea sericea, using M. thunbergiias a medium. In some areas, a transition to a deciduous broad-leaved community dominated by Celtis sinensis, Q. variabilisand Zelkova serratausing Lindera obtusilobaand C. sinensisas hub nodes was expected.

• Proceedings of the Korean Information Science Society Conference
• /
• 2010.06a
• /
• pp.238-239
• /
• 2010

• Journal of information and communication convergence engineering
• /
• v.1 no.4
• /
• pp.213-216
• /
• 2003

A VPN is widely used in a communications environment which access is controlled to permit peer connections only within a defined community of interest. It is constructed through some form of partitioning of a common underlying communication medium, where this underlying communications medium provides services to the network on a non-exclusive basis. In this paper, we have analyzed a variety of architecture to implement Giga bps VPN system. The proposed architecture will satisfy the needs of clients who adopt Giga bps VPN system in the various environments.

• Proceedings of the IEEK Conference
• /
• 2000.11b
• /
• pp.148-151
• /
• 2000

In recent years, security is essential factor of our safe network community. Therefore, data encryption/ decryption technology is improving more and more. Elliptic Curve Cryptosystem proposed by N. Koblitz and V. Miller independently in 1985, require fewer bits lot the same security, there is a net reduction in cost, size, and time. In this paper, we design high speed underlying field arithmetic processor for elliptic curve cryptosystem. The targeting device is VIRTEX V1000FG680 and verified by Xilinx simulator.

• Proceedings of the Korea Contents Association Conference
• /
• 2010.05a
• /
• pp.545-547
• /
• 2010

소셜 네트워크 서비스가 발전하면서 사용자층을 세분화하여 차별화 한 소셜 네트워크 서비스가 출현하고 있다. 해외에서는 과학자에게 특화된 여러 소셜 서비스가 활성화 되고 있으며 과학자들의 인맥 연결은 물론, 정보 공유와 공동 연구를 지원하는 다양한 부가서비스가 개발되어 온라인 상에서의 협업 환경이 조성되고 있다. 본 연구에서는 해외 과학자 소셜 네트워크 서비스의 특징을 살펴 보고 국내의 과학자 온라인 커뮤니티 활성화를 위한 소셜 서비스 도입을 제안해 보고자 한다.

• Proceedings of the Korean Society for Rock Mechanics Conference
• /
• 2008.03a
• /
• pp.25-40
• /
• 2008

• Proceedings of the IEEK Conference
• /
• summer
• /
• pp.321-324
• /
• 2004

A VPN is widely used in a communications environment which access is controlled to permit peer connections only within a defined community of interest. It is constructed through some form of partitioning of a common underlying communication medium, where this underlying communications medium provides services to the network on a non-exclusive basis. In this paper, we have analyzed a variety of architecture to implement Giga bps VPN system. The proposed architecture will satisfy the needs of clients who adopt Giga bps VPN system in the various environments.

• Proceedings of the IEEK Conference
• /
• 2002.07c
• /
• pp.1363-1366
• /
• 2002

The studies of multi-hop wireless networks are active as the new communication media, which does not require any fixed communication infrastructure. One of application of the networks is local information distribution service, which is useful far daily activities in certain geographically restricted region or community within a radius of several kilometers. In this paper, MID-Net, which is the network enabling such distribution service, and effective information distribution algorithm MCMS are proposed. The behavior of the MID-Net is characterized by the waiting time function, three types of the functions are proposed in this paper.

• Electronics and Telecommunications Trends
• /
• v.6 no.1
• /
• pp.22-38
• /
• 1991

현재 전산망 조정 위원회에서 국가 기간 전산망 사업을 총괄하여 추진하고 있다. 이 사업의 한 분야로써 체신부에서는 전국 우체국을 대상으로 온라인 서비스망인 종합 정보 서비스 전산망을 구축하고자 추진하고 있다. 구축된 종합정보 서비스 전산망(CISCN(Community Information Service Computer Network))을 통해 우체국에서 제공해줄 수 있는 서비스들은 행정망과의 접속에 의한 민원처리 대행 서비스, 금융망과의 접속에 의한 다양한 체신 금융 서비스, 국내에서 구축된 부가가치 서비스 망과의 접속에 의한 정보 제공 서비스, 그리고 우체국 자체업무를 신속 정확하게 고객에게 제공하는 서비스등이다. 본고에서는 이에 대한 추진 방향 및 전략, 대상, 추진 계획들에 대하여 언급하였다.