• 한국환경복원기술학회지
• /
• 제25권6호
• /
• pp.65-75
• /
• 2022

Urban flood management(UFM) strategy ought to consider the connections and interactions between existing and new infrastructures to manage stormwater and improve the capacity to treat water. It is also important to demonstrate strategies that can be implemented to reduce the flow at flooding sources and minimize flood risk at critical locations. Although the general theory of spatial impact is popular, modeling guidelines that can provide information for implementation in real-world plans are still lacking. Under such background, this study conducted a modeling research based on an actual target site to confirm the hypothesis that it is appropriate to install green infrastructure(GI) in the source area and to take structural protection measures in the impact area, as summarized in previous studies. The results of the study proved the hypothesis, but the results were different from the hypothesis depending on which hydrological performance indicators were targeted. This study will contribute to demonstrating the effectiveness of strategies that can be implemented to reduce the flow at flooding sources and minimize the risk of flooding in critical locations in terms of spatial planning and regeneration.

• 디지털융복합연구
• /
• 제18권8호
• /
• pp.49-54
• /
• 2020

코로나19 사태는 정보통신의 기초가 되는 바탕 또는 토대인 정보통신기반의 필요성을 재인식하는 계기가 된다는 문제의식에 바탕을 두고 주로 법학적 관점의 문헌 조사와 규범적 고찰을 통하여 코로나19 사태에서 정보통신기반의 중요성을 확인하고 정보통신기반 구축·보호에서 국가의 책임을 구현하는 제도적 방안이 무엇인지를 총론적 관점에서 살펴보았다. 정보통신기반은 코로나19 대응에서 중요한 역할을 하였으며 포스트 코로나 시대의 디지털 전환의 주요 관건이다. 이에 따라 국가는 정보통신기반의 구축과 보호에 대한 책임이 있다. 국가의 정보통신기반 구축·보호 책임에서 제도적 방안은 중요한 의미를 지니며 법률적 차원의 대응뿐만 아니라 정보통신기반 구축·보호에 관한 국가목표규정을 형성하는 헌법적 차원의 대응도 필요할 수 있다. 이러한 연구결과는 관련 개별 법령에 대한 세부적인 연구의 기본 전제와 방향성을 제시한다.

• 전자통신동향분석
• /
• 제38권4호
• /
• pp.58-69
• /
• 2023

Cyberspace is emerging as a critical domain requiring national-level governance and international cooperation owing to its potential financial and societal impacts. This research aims to investigate the cybersecurity policies from major countries for understanding with comprehensive perspectives. Global trends emphasize a comprehensive command-centered approach, with top leadership directing cybersecurity policies. Key policy areas include security across technology ecosystems, protection of critical infrastructure, and software supply chain security. Investment is being focused on zero-trust architectures, software bills, and new technologies like artificial intelligence. For countries like Korea, immediate response and adaptation to these trends are crucial to develop and enforce national cybersecurity policies.

• Journal of Ecology and Environment
• /
• 제47권4호
• /
• pp.219-227
• /
• 2023

The US National Science Foundation's National Ecological Observatory Network (NEON) is a continental-scale program intended to provide open data, samples, and infrastructure to understand changing ecosystems for a period of 30 years. NEON collects co-located measurements of drivers of environmental change and biological responses, using standardized methods at 81 field sites to systematically sample variability and trends to enable inferences at regional to continental scales. Alongside key atmospheric and environmental variables, NEON measures the biodiversity of many taxa, including microbes, plants, and animals, and collects samples from these organisms for long-term archiving and research use. Here we review the composition and use of NEON resources to date as a whole and specific to biodiversity as an exemplar of the potential of national research infrastructure to contribute to globally relevant outcomes. Since NEON initiated full operations in 2019, NEON has produced, on average, 1.4 M records and over 32 TB of data per year across more than 180 data products, with 85 products that include taxonomic or other organismal information relevant to biodiversity science. NEON has also collected and curated more than 503,000 samples and specimens spanning all taxonomic domains of life, with up to 100,000 more to be added annually. Various metrics of use, including web portal visitation, data download and sample use requests, and scientific publications, reveal substantial interest from the global community in NEON. More than 47,000 unique IP addresses from around the world visit NEON's web portals each month, requesting on average 1.8 TB of data, and over 200 researchers have engaged in sample use requests from the NEON Biorepository. Through its many global partnerships, particularly with the Global Biodiversity Information Facility, NEON resources have been used in more than 900 scientific publications to date, with many using biodiversity data and samples. These outcomes demonstrate that the data and samples provided by NEON, situated in a broader network of national research infrastructures, are critical to scientists, conservation practitioners, and policy makers. They enable effective approaches to meeting global targets, such as those captured in the Kunming-Montreal Global Biodiversity Framework.

• 한국전자통신학회논문지
• /
• 제8권6호
• /
• pp.863-871
• /
• 2013

최근 정보통신 기술의 발전으로 국가 주요 핵심 기반시설(Critical National Infrastructure)의 제어시스템에 대한 개방형 프로토콜 적용 및 외부 시스템과의 연계 등이 점차 증가되고 있다. 이러한 추세는 국가 핵심 기반시설이 사이버 침해 및 공격에 따른 위협에 노출됨은 물론 사이버 테러 및 해킹, 바이러스 등에 의해 원격 조작 및 통제되는 경우 심각한 위험에 빠질 수 있음을 의미한다. 본 논문에서는 최근 IT분야의 화두로 떠오르고 있는 가상화(Virtualization)기술을 적용하여 기존 허니넷 시스템의 장점을 유지하면서 허니넷 시스템의 자원문제, 구축 및 운영관리 문제를 줄일 수 있는 가상 허니넷 모델을 제시하였다. 또한 공격의도 확인기반의 데이터 분석 및 수집기법, 포커스 지향(Focus-Oriented) 분석기법을 제시하여 운영비용을 최소화할 수 있는 가상 허니넷 모델을 제안하였다. 제안된 모델을 기반으로 서비스 공격의도 확인 기반의 호스트 및 데이터 수집 기법, 네트워크 공격패턴 시각화 기법 등을 적용한 가상 허니넷 기반의 신종공격 탐지시스템인 Cybertrap을 설계하고 구현하였다. 또한, 제안된 시스템의 시험을 위한 테스트베드를 구축하였고, 일련의 실험을 통해 시스템의 기능 및 성능을 평가하였다.

• Journal of Communications and Networks
• /
• 제17권6호
• /
• pp.558-567
• /
• 2015

In recent years, we have seen a proliferation of mobile-network-enabled smart objects, such as smart-phones and smart-watches, that form a cyber-physical integrated network to connect the cyber and physical worlds through the capabilities of sensing, communicating, and computing. Discovery of the relationship between smart objects is a critical and nontrivial task in cyber-physical integrated network applications. Aiming to find the most stable relationship in the heterogeneous and dynamic cyber-physical network, we propose a distributed and efficient relationship-discovery algorithm, called dynamically maximizing remaining unchanged time with minimum connected dominant set (DMRUT-MCDS) for constructing a backbone with the smallest scale infrastructure. In our proposed algorithm, the impact of the duration of the relationship is considered in order to balance the size and sustain time of the infrastructure. The performance of our algorithm is studied through extensive simulations and the results show that DMRUT-MCDS performs well in different distribution networks.

• 시스템엔지니어링학술지
• /
• 제10권1호
• /
• pp.65-71
• /
• 2014

As one member of the Korea Society of Systems Engineering (KOSSE) and especially as a member of Sociotechnical Systems session of the KOSSE, I tried to contribute somehow to the activity of KOSSE to help development of better Korea systems. This report is a brief discussion of the need for KOSSE activity in the Cyber Security area especially for the protection of national critical infrastructure systems from cyber terror.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권9호
• /
• pp.4123-4144
• /
• 2016

Vehicular Ad Hoc Networks (VANETs) utilize radio propagation models (RPMs) to predict path loss in vehicular environment. Modern urban vehicular environment contains road infrastructure units that include road tunnels, straight roads, curved roads flyovers and underpasses. Different RPMs were proposed in the past to predict path loss, but modern road infrastructure units especially flyovers and underpasses are neglected previously. Most of the existing RPMs are computationally complex and ignore some of the critical features such as impact of infrastructure units on the signal propagation and the effect of both static and moving radio obstacles on signal attenuation. Therefore, the existing RPMs are incapable of predicting path loss in flyovers and underpass accurately. This paper proposes an RPM to predict path loss for vehicular communication on flyovers and inside underpasses that considers both the static and moving radio obstacles while requiring only marginal overhead. The proposed RPM is validated based upon the field measurements in 5 GHz frequency band. A close agreement is found between the measured and predicted values of path loss.

• 한국기술혁신학회:학술대회논문집
• /
• 한국기술혁신학회 2000년도 추계 학술대회(The 2000 Autumn Conference of korea Technology Inovation Society)(한국기술혁신학회)
• /
• pp.45-67
• /
• 2000

Broadband access technologies plays an important role in the national information infrastructure. In the evolution path of the information infrastructure, the relative economics of alternative access technology is the most critical determining factor. In this paper, we discuss the economics of local loop access technologies of existing technologies, such as, ADSL, HFC, and new PLC. To do this, we suggest appropriate configuration of access network system and its associated numerical equations. To modelize access network system and drive the numerical equations, we consider the DS (Double Star) and the T&B (Tree ＆ Brench) architecture and analyse the adequate block diagram of each access system for each technology We introduce the density of subscriber as a key variable and the equation of allocating optimal number of cell in a service area. We analyze the relative economics of local loop architecture in two different situations, that is, urban and rural. From the empirical implementation, we found that for the case of urban area, where the cost of cable and infrastructure is not necessary, there is not much difference in the cost per one subscriber. However, for the case of rural region, we found that there is remarkable difference in the cost per one subscriber among technologies. Therefore we conclude that the economics of local loop architecture is depend on the density of subscriber and existing network infrastructures. we hope that this paper contribute to the optimal technology selection of consmer, technology Providers, and government.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2013년도 추계학술대회
• /
• pp.202-204
• /
• 2013

요즘에는 하드웨어의 발달 덕분에, 많은 기업들이 과거에 사용했던 데이터보다 훨씬 많은 양의 데이터를 조작하고 관리해야만 한다. 이런 이유에서, 기업들은 폭발적으로 증가하는 데이터를 수집하고 저장하고 다루기 위해서, 체계화된 도구, 플랫폼, 분석 방법론을 끊임없이 긴급하게 필요로 하고 있다. 본 논문에서는 우선 빅 데이터의 주요 요소를 이해하고, 둘째로 이러한 요소들을 활용한 빅 데이터 애플리케이션을 위한 주요 요소를 정의한다. 셋째로, 빅 데이터 분석을 위한 다양한 분석 기법에 대해 연구하고, 마지막으로 빅 데이터 분석을 위한 인프라를 제안한다.