• 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.299-303
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• 2011

Congestion is a growing concern of many global cities and the demands on Infrastructure services within a locale coupled by the rising expectations from the growing population places stress on these cities. This entails the ability to build a sustainable community that requires an understanding and recognition of Population growth, changing demographics and the ever changing urban development on both a macro and micro level. Infrastructure is an integral part of Australian economy, particularly the 'Infrastructure Assets Management' which highlights the importance towards the development of sustainable communities for Melbourne's future. Melbourne 2030 is a comprehensive representation of government's response to a wide-ranging population growth within Melbourne metropolitan and surrounding areas. Urban plan and specific Infrastructure Assets Planning needs not only to provide sufficient Infrastructure to a community, but it must also be efficient and innovative so that it produces an optimised management system. A system that incorporates engineering techniques that will be sustainable for decades to come by maintaining an acceptable level of services to its intended community in an effective manner, which also strengthens service delivery. The fundamental challenges for optimization of Infrastructure with the Melbourne urban plan is, the ability to manage and sustain maintenance of Infrastructure to provide the acceptable level of service required by the community in a most effective manner which also strengthens service delivery to contribute towards Melbourne 2030. This paper particularly investigates some of the fundamental issues within the Melbourne urban plan such as Infrastructure Asset Management, AusLink and the Australian Road Management Act 2004, which the Governments at all levels must deal with to provide an economically viable solution to the changing Infrastructure so it may suits the needs and services the strategies of a metropolis.

• 한국습지학회지
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• 제21권1호
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• pp.27-33
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• 2019

과거 물관리는 하천 중심으로 사업이 진행되면서 단일 기능의 집중형 물관리였다. 미래 물관리는 집중형 관리로 인한 시설의 대규모화를 극복하면서 재정의 낭비를 줄이고 다양한 부가 기능을 유도할 수 있도록 시설의 분산화, 기술의 다양성, 관리의 통합화가 필요하다. 또한 시민이 살고 있는 유역에 설치되는 모든 사회인프라가 물관리의 기능을 가져야 하므로 시민들의 환경인식과 참여는 중요하다. 따라서 본 연구에서는 시민들의 도시환경과 LID(Low Impact Development) 적용에 대한 인식을 조사 및 분석하여 LID 적용에 대한 타당성과 가능성을 분석하기 위하여 수행되었다. 시민들의 LID 인지도는 약 59%로 조사되었으나, 확대 적용에서 대해서는 46%만 동의하였다. 그러나 실제 LID 사진 및 정보를 접한 후에는 90%가 확대적용에 동의하였으며, 94%가 회색인프라와 LID 인프라를 구별할 수 있는 것으로 나타났다. 시민들은 녹지공간을 다기능의 LID 인프라 또는 그린인프라로 인지하는 경향이 있는 것으로 조사되었다. 시민들이 다기능을 가진 LID를 경관으로만 인지하는 경우 향후 LID의 확대 적용에 장애가 될 수 있기에 특화된 교육과 홍보 전략이 필요하다. LID의 확대적용을 위해서는 실질적 효과검증에 대한 결과물과 시각적 자료를 활용하는 홍보전략이 필요하다. 또한 모든 사회인프라가 시민이 살고 있는 유역에 조성되는 것을 고려할 때 향후 시민이 참여하는 거버넌스 구축을 통한 인프라의 계획 및 관리가 필요하다.

• Journal of Microbiology and Biotechnology
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• 제23권4호
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• pp.555-559
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• 2013

Vibrio cholerae O1 and O139 are the major serotypes associated with illness, and some V. cholera non-O1 and non-O139 isolates produce cholera toxin. The present study describes a quantitative polymerase chain reaction (qPCR) assay for the species-specific detection and quantitation of V. cholera using a primer pair based on an outer membrane lipoprotein lolB gene for the amplification of a 195 bp DNA fragment. The qPCR primer set for the accurate diagnosis of V. cholera was developed from publically available genome sequences. This quantitative PCR-based method will potentially simplify and facilitate the diagnosis of this pathogen and guide disease management.

• 한국건설관리학회논문집
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• 제17권2호
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• pp.80-89
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• 2016

최근 인프라 투자는 신규 건설 중심에서 기 시공된 시설의 효율적인 운영과 유지관리로 패러다임이 전환되고 있다. 이와 함께 시설물 노후화에 따른 안전에 대한 국민적 관심이 증폭되고 있다. 본 연구에서는 한국시설안전공단의 시설물관리종합정보시스템에 등록되어 있는 1994년부터 2014년까지의 시설물 유지관리 관련 데이터를 바탕으로 점검진단지수와 보수보강지수 등의 정량적 분석 방법론을 적용하여 유지관리 활동의 성과를 평가하였다. 또한 과거에 비해 현재 시설물의 안전도가 어느 정도 향상되었는지 안전등급 데이터를 토대로 분석을 실시하였다. 분석 결과 우리나라 시설물의 안전성은 과거 대비 크게 향상된 것으로 나타났으며 안전성이 향상된 요인으로는 정기적인 안전점검과 그에 따른 보수 보강 활동의 결과로 추정해 볼 수 있다. 본 연구를 통해 도출 된 결과는 향후 시설물의 유지관리 정책 및 전략 수립에서 기초적 자료로 활용이 가능할 것으로 판단된다.

• Ecology and Resilient Infrastructure
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• 제3권2호
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• pp.80-91
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• 2016

도시홍수, 가뭄, 폭염과 열대야 등 다양한 기상재해가 빈번히 발생하고 있어 인명과 재산 피해는 물론 도시의 자연환경보전에 어려움을 겪고 있다. 다양한 기상재해를 최소화 하고 기후변화에 적응하면서 보다 쾌적한 도시환경을 다음 세대에게 넘겨주기 위한 목적으로 저영향개발 또는 그린인프라가 주목 받고 있다. 한국의 저영향개발 및 그린인프라 기술은 현재 보육(incubating) 또는 시연 (demonstrating) 단계에 있다. 중앙정부 및 지방정부의 노력으로 법률 정비가 빠르게 이루어지고 있다. 이를 통해 물을 이용만 하는 회색인프라 (Gray Infrastructure)로 구성된 회색도시 (Gray City)에서 물을 관리하는 그린인프라(Green Infrastructure)로 구성된 녹색도시 (Green City)로 변모하기 시작했다. 보다 체계적인 확산과 보급을 위해서는 한국형 신기술의 개발, 기술의 검증, 기술 기준의 정비, 다분야의 협력과 협업, 교육과 홍보 그리고 시민들의 참여가 요구된다.

• 한국IT서비스학회지
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• 제15권4호
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• pp.63-72
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• 2016

Critical infrastructure has been operating in a closed environment with a completely separate information system and in the private area. However, with the current ICT environment changes due to convergence and open platforms it has increased the threats and risks to critical infrastructure. The importance of cyber security is increasing in the infrastructure control system, such as the outbreak of Ukraine blackout in 2015 by a malicious code called 'black energy'. This thesis aims to recognize the importance and necessity of protecting the critical infrastructure service, designing a security framework reflecting environmental and characteristic changes, and analyzing the management system suitable for a security framework. We also propose a theoretical basis for constructing a new security framework by comparing and analyzing seven international security management system standards, such as NIST 800-82 and IEC 62443-2-1, which are used in the control system. As a result, the environment surrounding critical infrastructure changes with the characteristics of connectivity, openness, and finality was studied, and as a response to this, many scholars and institutions present critical infrastructure security frameworks as cycle enhancement type structures, risk management structures, and management domain expansion structures. In response, the security framework encompassing these structures, CISF (Critical Infrastructure Security Framework), was designed. Additionally, through the security related international standard and criterion analysis, as a newly designed security standard suitable for CISF, IEC 62443-2-1 is reviewed and suggestions are made.

• International Journal of Concrete Structures and Materials
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• 제9권4호
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• pp.463-473
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• 2015

Three full-scale instrumented test slabs were constructed and tested using a heavy vehicle simulator (HVS) to evaluate the structural behavior of internally cured concrete (ICC) for use in pavements under Florida condition. Three mix designs selected from a previous laboratory testing program include the standard mixture with 0.40 water-cement ratio, the ICC with 0.32 water-cement ratio, and the ICC mixture with 0.40 water-cement ratio. Concrete samples were prepared and laboratory tests were performed to measure strength, elastic modulus, coefficient of thermal expansion and shrinkage properties. The environmental responses were measured using strain gages, thermocouples, and linear variable differential transformers instrumented in full-scale concrete slabs. A 3-D finite element model was developed and calibrated using strain data measured from the full-scale tests using the HVS. The results indicate that the ICC slabs were less susceptible to the change of environmental conditions and appear to have better potential performance based on the critical stress analysis.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.479-486
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• 2009

This paper presents an integrated real-time monitoring and control framework that facilitates decision making by enabling project managers to take corrective actions right after any deviation happens and mitigate the damage to the ongoing steel projects. The proposed framework employs the High Level Architecture (HLA) as its infrastructure. It is composed of several individual monitoring and control components called "Federates," which cooperate and interact with each other through the Real-time Infrastructure (RTI). Reusability, interoperability and extendibility of federates in the proposed project control system make this a unique system.

• 한국물환경학회지
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• 제39권1호
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• pp.30-37
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• 2023

This study aimed to evaluate the ability to reduce flood damage caused by abnormal rainfall events due to climate change by utilizing a blue-green roof (BGF), a type of rooftop greening technology. For two buildings with the same roof area, a BGF was installed in the experimental group, a general roof was configured in the control group, and rainfall runoff was compared. A total of 10 rainfall events were tested and analyzed by classifying them into three rainfall classes (less than 10 mm, less than 100 mm, and more than 100 mm). There was a reduction of 100% in the case of 10 mm or less of rainfall, 84. 7% in the case of 100 mm or less, and 39.8% in the case of 100 mm or more. Although this study showed that a BGF was effective in reducing rainfall runoff, additional experiments and analyses of various factors affecting rainfall runoff reduction are needed to generalize the results of the study. This research methodology may be used to develop a method for evaluating the resilience of a BGF to flood damage due to climate change.

• Smart Structures and Systems
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• 제6권3호
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• pp.309-333
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• 2010

Civil infrastructure, in both its construction and maintenance, represents the largest societal investment in this country, outside of the health care industry. Despite being the lifeline of US commerce, civil infrastructure has scarcely benefited from the latest sensor technological advances. Our future should focus on harnessing these technologies to enhance the robustness, longevity and economic viability of this vast, societal investment, in light of inherent uncertainties and their exposure to service and even extreme loadings. One of the principal means of insuring the robustness and longevity of infrastructure is to strategically deploy smart sensors in them. Therefore, the objective is to develop novel, durable, smart sensors that are especially applicable to major infrastructure and the facilities to validate their reliability and long-term functionality. In some cases, this implies the development of new sensing elements themselves, while in other cases involves innovative packaging and use of existing sensor technologies. In either case, a parallel focus will be the integration and networking of these smart sensing elements for reliable data acquisition, transmission, and fusion, within a decision-making framework targeting efficient management and maintenance of infrastructure systems. In this paper, prudent and viable sensor and health monitoring technologies have been developed and used in several large structural systems. Discussion will also include several practical bridge health monitoring applications including their design, construction, and operation of the systems.