• 디지털융복합연구
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• 제18권8호
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• pp.49-54
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• 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.

• International Journal of Human Ecology
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• 제11권2호
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• pp.77-91
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• 2010

This study examined the Family and Consumer Sciences (FCS) National Standards with some examples at the state level, analyzed the previous studies relevant to curriculum implementation in the USA, and explored critical success factors in moving toward the new perspective curriculum in exemplary states. The process, in which the FCS discipline struggled to clarify the identity and image as well as to find the mission and vision, produced the FCS National Standards in 1998 and 2008 in the USA. The FCS National Standards were established to fulfill the mission of the FCS based on a critical science perspective. The previous research on a state level implementation indicated that the majority of FCS state administrators agreed that the National Standards positively influenced curriculum development. The critical success factors in integrating National Standards into local programs included the dissemination of thephilosophical works of Marjorie Brown, the foundation of the FCS curriculum with a critical science perspective, the establishment of National Standards corresponding to the philosophical works and a critical science perspective, the openness of state FCS administrators to educational reform, the construction of an infrastructure to support reform, and the commitment by university professors to develop a teacher training program. The critical success factors identified can be employed as an informative guide for the future development and implementation of the Family and Consumer Sciences curriculum in Korea.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2019년도 학술발표회
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• pp.162-162
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• 2019

Water Distribution Network (WDN) is a critical infrastructure to be maintained ensuring proper water supply to wide-spread consumers. The WDN consists of pipes, valves, pumps and tanks, and these elements interact each other to provide adequate system performance. If elements fail by internal or external interruptions, it may result in adverse impact to water service with different degree depending on the failed element. To determine an appropriate maintenance priority, the critical elements need to be identified and mapped in the network. In order to identify and prioritize the critical elements in WDN, an element-based simulation approach is proposed, in which all the elements composing the WDN are reviewed one at a time. The element-based criticality is measured using several resilience indexes that are newly developed in this study. The proposed resilience indexes are used to quantify the impacts of element failure to water service degradation. Here, three resilience indexes are developed, such as User Demand Severity, Economic Value Loss and Water Age Degradation, each of which intends to measure different aspects of consequences, such as social, economic, and water quality, respectively. For demonstration, the proposed approach is applied to a benchmark water network to identify and prioritize the critical elements.

• 정보보호학회논문지
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• 제26권6호
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• pp.1605-1618
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• 2016

최근 몇 년 동안 금융회사(은행, 증권사, 신용카드사, 보험사 등)를 대상으로 한 개인정보 유출, 홈페이지 해킹, 분산 서비스거부공격(DDoS) 등 보안사고가 꾸준히 증가하고 있다. 본 논문에서는 현행 전자금융기반시설의 정보보호 관리수준의 문제점을 법적 준거성과 정보보호 인증제도 관점에서 분석하고 금융 분야 특성에 적합한 종합적인 관리체계 하에서 높은 수준의 정보보호 활동이 지속 가능하도록 정보보호관리체계, 정보보호 준비도 평가 및 주요정보통신기반시설 취약점 분석 평가 제도를 활용한 개선방안을 제시하고자 한다.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.474-479
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• 2011

With Beijing's success in bidding for the 2008 Olympic Games, the increasing demand for infrastructure development and reduced public sector funding capacity has created a significant funding gap which calls for alternative project delivery methods such as Public-Private Partnership (PPP). Although the exploration of infrastructure projects using PPP model have been practiced since the late 80s, the $560 million National Stadium which served as the main venue for the Olympic Games is the first stadium project in China to be delivered under PPP operation. The project is generally considered successful despite the concession transfer in 2009 with concern of better serving the public interest. Compared to other infrastructure projects such as transportation, waste management and water management, the development of major sports facilities for mega-sports events with PPP has its own unique features and is subject to different major risks. This research identifies and analyzes critical risks in the implementation of PPP in major sports facility development through case study of the National Stadium project. A questionnaire survey and several interviews are conducted to solicit expert opinions from experienced practitioners. The purpose is to provide additional insights in risk management strategies and opportunities in China's PPP implementations in major sports facilities for policy makers and private sectors involved with investment decisions in future similar infrastructure development.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권10호
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• pp.2750-2763
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• 2012

The Domain Name System (DNS) is a critical Internet infrastructure that provides name to address mapping services. In the past decade, Denial-of-Service (DoS) attacks have targeted the DNS infrastructure and threaten to disrupt this critical service. While the flooding DoS attacks may be alleviated by the DNS caching mechanism, we show in this paper that flooding DoS attacks utilizing name error queries is capable of bypassing the cache of resolvers and thereby impose overwhelming flooding attacks on the name servers. We analyze the impacts of such DoS attacks on both name servers and resolvers, which are further illustrated by May 19 China's DNS Collapse. We also propose the detection and defense approaches for protecting DNS servers from such DoS attacks. In the proposal, the victim zones and attacking clients are detected through monitoring the number of corresponding responses maintained in the negative cache. And the attacking queries can be mitigated by the resolvers with a sample proportion adaptive to the percent of queries for the existent domain names. We assess risks of the DoS attacks by experimental results. Measurements on the request rate of DNS name server show that this kind of attacks poses a substantial threat to the current DNS service.

• 한국전자파학회논문지
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• 제24권8호
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• pp.781-790
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• 2013

현대의 국가 핵심 기반 시설은 국제적으로 위협이 증대되고 있는 고출력 전자기파에 대해 매우 취약한 것으로 알려져 있다. 우리나라의 관계 법령에서는 주로 사이버 위협에 대해서만 다루고 있어, 고출력 전자기파 위협에 대해서는 세부시행 관련 규정이 미흡하여 현실적인 대책이 이루어지지 않고 있다. 본 논문에서는 고출력 전자기파 관련 제도의 국내, 외 동향을 살펴보고, 우리나라의 현행 관련 법령의 개정 방향과 구체적으로 법령에 담아야 할 내용에 대해 제안하였다. 그 중에서도 현행 "정보통신기반보호법"을 개정하여, 기밀정보의 보호, 산업육성, 연구 개발 지원, 교육 홍보 강화 등을 포함시키는 방안이 가장 효과적인 것으로 판단된다. 아무튼 본 논문이 우리나라의 효과적인 고출력 전자기파 방호 제도 도입에 도움이 되기를 기대한다.

• 대한인간공학회지
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• 제22권1호
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• pp.81-94
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• 2003

The British railway safety research group has developed a risk assessment model for the railway infrastructure and major railway accidents. The major hazardous factors of the railway infrastructure were identified and classified in the model. The frequency rates of critical top events were predicted by the fault tree analysis method using failure data of the railway system components and ratings of railway maintenance experts, The consequences of critical top events were predicted by the event tree analysis method. They classified the Joss of accident due to railway system into personal. commercial and environmental damages. They also classified 110 hazardous event due to railway system into three categories. train accident. movement accident and non-movement accident. The risk assessment model of the British railway system has been designed to take full account of both the high frequency low consequence type events (events occurring routinely for which there is significant quantity of recorded data) and the low frequency high consequence events (events occurring rarely for which there is little recorded data). The results for each hazardous event were presented in terms of the frequency of occurrence (number of events/year) and the risk (number of equivalent fatalities per year).

• 한국환경복원기술학회지
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• 제25권6호
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• pp.65-75
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• 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.

• Structural Monitoring and Maintenance
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• 제9권4호
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• pp.359-371
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• 2022

Bridges are critical to the civil engineering infrastructure network as they facilitate movement of people, the transportation of goods and services. Given the aging of bridge infrastructure, federal officials mandate visual inspections biennially to identify necessary repair actions which are time, cost, and labor-intensive. Additionally, the expansion joints of bridges are rarely monitored due to cost. However, expansion joints are critical as they absorb movement from thermal effects, loadings strains, impact, abutment settlement, and vehicle motion movement. Thus, the need to monitor bridge expansion joints efficiently, at a low cost, and wirelessly is desired. This paper addresses bridge joint monitoring needs to develop a cost-effective, real-time wireless system that can be validated in a full-scale bridge structure. To this end, a wireless expansion joint monitoring was developed using commercial-off-the-shelf (COTS) sensors. An in-service bridge was selected as a testbed to validate the performance of the developed system compared with traditional displacement sensor, LVDT, temperature and humidity sensors. The short-term monitoring campaign with the wireless sensor system with the internet protocol version 6 over the time slotted channel hopping mode of IEEE 802.15.4e (6TiSCH) network showed reliable results, providing high potential of the developed system for effective joint monitoring at a low cost.