• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2021.06a
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• pp.116-119
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• 2021

국내 이동통신은 4 세대(4G)에서 5 세대(5G)로 전환되는 과정에 있으며 행정안전부는 기존 긴급재난문자 서비스를 5G 망으로 고도화하기 위해 준비하고 있다. 재난문자 길이의 확장, 송출 지역 세분화, 외국어 문자 지원 등을 긴급재난문자 서비스에 포함하기 위해 국내외 표준화와 검증 시스템 구축이 준비되고 있다. 본 논문에서는 해외 사례 분석을 통해 국내 5G 망으로 고도화된 긴급재난문자를 서비스하기 위해 요구되는 검증 요구사항을 정의하고 있다. 이를 기반으로 긴급재난문자 서비스를 검증할 리빙랩이 구축될 예정이다.

• Journal of the Korea Society of Computer and Information
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• v.25 no.8
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• pp.47-54
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• 2020

Developmental disorders are impairments of brain and/or central nervous system and refer to a disorder of brain function that affects languages, communication skills, perception, sociality and so on. In diagnosis of developmental disorders, behavioral response such as expressing emotions in proper situation is one of observable indicators that tells whether or not individual has the disorders. However, diagnosis by observation can allow subjective evaluation that leads erroneous conclusion. This research presents the technological environment and data acquisition system for AI based screening of autism disorder. The environment was built considering activities for two screening protocols, namely Autism Diagnostic Observation Schedule (ADOS) and Behavior Development Screening for Toddler (BeDevel). The activities between therapist and baby during the screening are fully recorded. The proposed software in this research was designed to support recording, monitoring and data tagging for learning AI algorithms.

• Journal of Appropriate Technology
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• v.7 no.1
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• pp.115-124
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• 2021

Due to the successful accomplishments of the first-stage base center project, a road-map for the second-stage, global base center 2030 project has recently been proposed. The vision of the base center is to build a technology centered, cooperation based platform for a sustainable global community. The global base center 2030 project is based on three core strategies as well as three key strategies. The main goal of the core strategy is to establish an interdisciplinary smart platform, as well as a global tech-coordination facility to implement sustainable, inclusive, and innovative science and technology based ODA projects. To achieve such goals, the global center will focus on developing a global living lab, interdisciplinary smart linkage systems, and a global operating platform. The main goals for the key strategies are to solve issues at the base centers while establishing an international relationship through sustainable technology. To achieve such goals, key projects are centered in establishing a ICT package, and a global living lab based on smart interconnected system. With this, a global inter-connected business platform will also be established to support technical and operational issues.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.258-258
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• 2023

도시침수는 하천홍수와는 달리 짧은 시간에 발생하며 저지대 우수 유입, 배수관로 용량 부족등으로 인해 발생한다. 추가적 원인으로 국지성 집중호우가 있으며 짧은 시간에 많은 비가 집중적으로 내리는 현상을 의미한다. 한두 시간 혹은 몇 분 동안의 짧은 시간에 좁은 지역에서 발생하는특성 때문에 발생 시간, 지점, 강우량에 대한 정확한 예측이 어려워 도심지의 저지대가 침수되는등 예상치 못하는 침수피해가 자주 발생한다. 강우량별 피해 범위를 보면 시간당 30~40mm 정도에서 하수관이 역류하고, 시간당 50mm 강우량에서 지하실이나 지하상가와 같은 지하공간에서 침수피해가 발생할 수 있으며, 시간당 100mm 이상의 강우에서는 대규모 재해가 발생할 우려가 높아진다. 도시침수 피해를 줄이기 위해 지자체에서는 CCTV를 운영하여 위험을 감시하고 있지만다수의 인력과 환경에 따라 영상 확인의 한계가 있다. 그러나 침수센서는 침수 정도를 수치로 표현하여 데이터를 확보함과 동시에 다수의 지역을 모니터링하는데 유용하다. 또한 주변 환경에 상관없이 계측된 자료를 모니터링 할 수 있다. 기존 센서를 설계할 때는 도시 미관을 해치는 경우가있었으나 본 연구에서는 도심지의 여건에 맞추어 인도용, 차도용, 공원용의 용도에 맞는 센서를구축하여 미관을 해치지 않으면서 기존의 지형을 활용하고자 하였다. 이 후 구축된 센서를 이용하여 리빙랩 개념의 테스트베드를 통해 다양한 도시침수의 원인이 되는 조건을 검토하여 실증 실험을 진행할 예정이다.

• Journal of the Korean Association of Geographic Information Studies
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• v.27 no.1
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• pp.81-98
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• 2024

This study analyzed the impact of urban spatial factors on the thermal environment. The personal thermal sensation was set as the unit of thermal environment to analyze its correlation with environmental factors. To collect data on personal thermal sensation, Living Lab was applied, allowing citizens to record their thermal sensation and measure the temperature. Based on the input points of the collected personal thermal sensation, nearby urban spatial elements were collected to build a dataset for statistical analysis. Logistic regression analysis was conducted to analyze the impact of each factor on personal thermal sensation. The analysis results indicate that the temperature is influenced by the surrounding spatial environment, showing a negative correlation with building height, greenery rate, and road rate, and a positive correlation with sky view factor. Furthermore, the road rate, sky view factor, and greenery rate, in that order, had a strong impact on perceived heat. The results of this study are expected to be utilized as basic data for assessing the thermal environment to prepare local thermal environment measures in response to climate change.

• Journal of the Society of Disaster Information
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• v.20 no.3
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• pp.484-499
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• 2024

Purpose: Recently, due to the aging of safety facilities in national industrial complexes, there has been an increase in the frequency and scale of safety accidents, highlighting the need for a shift toward a prevention-centered disaster management paradigm and the establishment of a digital safety network. In response, this study aims to provide an information system that supports more rapid and precise decision-making during disasters by utilizing digital twin-based integrated control technology to predict the spread of hazardous substances, trace the origin of accidents, and offer safe evacuation routes. Method: We considered various simulation results, such as surface diffusion, upper-level diffusion, and combined diffusion, based on the actual characteristics of hazardous substances and weather conditions, addressing the limitations of previous studies. Additionally, we designed an integrated management system to minimize the limitations of spatiotemporal monitoring by utilizing an IoT sensor-based backtracking model to predict leakage points of hazardous substances in spatiotemporal blind spots. Results: We selected two pilot companies in the Gumi Industrial Complex and installed IoT sensors. Then, we operated a living lab by establishing an integrated management system that provides services such as prediction of hazardous substance dispersion, traceback, AI-based leakage prediction, and evacuation information guidance, all based on digital twin technology within the industrial complex. Conclusion: Taking into account the limitations of previous research, we used digital twin-based AI analysis to predict hazardous chemical leaks, detect leakage accidents, and forecast three-dimensional compound dispersion and traceback diffusion.

• Journal of Digital Convergence
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• v.17 no.1
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• pp.169-177
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• 2019

The city is experiencing various problems such as traffic congestion, environmental pollution, urban crime, and faces the limit of growth. Recently, various attempts to build a Smart City have been spreading around the world, in order to solve these problems. Smart City is attracting attention as the core platform of the future city with the $4^{th}$ industrial revolution. However, various definitions of smart city are mixed, and the methods and strategies for implementing smart city are changing or evolving due to the development of technology and the experience during that time. This study summarizes the definition of various smart city through literature review and suggests smart city building strategy that enables sustainable growth of cities as a platform of the $4^{th}$ industrial revolution era.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.12
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• pp.1826-1831
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• 2022

Rapid Aging Society demands the transformation of medical paradigm of diagnosis and treatment towards prevention and management. This paper explores the norm and development of digital health care, focusing on Busan Metropolitan City. Digital health care which combines new ICT technology and medical technology is predictive, preventive, personalized and participatory; and suggests alternative to solve the problem of demographic changes and increasing social cost of medical welfare. Community Health Center in Busan is unique one based in the minimum community of collecting data from self-leading health management. Digital transformation using basic health data and social information can build preventive care system in the community. Easy access leads community center to test bed of developing new technology, as a living lab. In order to use the newly developed goods and service effectively, user-participatory test is nicessary. Finally community nurse and activists can specify health-welfare converged service through digital transformation empowerment training.

• Journal of Cadastre & Land InformatiX
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• v.49 no.2
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• pp.67-82
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• 2019

The purpose of this study is to analyze the issues and perceptions of smart cities. First, based on the big data analysis platform, big data analysis on smart cities were conducted to derive keywords by year, word cloud, and frequency of generation of smart city keywords by time. Second, trend and flow by area were analyzed by reclassifying major keywords by year based on meta-keywords. Third, emotional recognition flow for smart cities and major emotional keywords were derived. While U-City in the past is mostly centered on creating infrastructure for new towns, recent smart cities are focusing on sustainable urban construction led by citizens, according to the analysis. In addition, it was analyzed that while infrastructure, service, and technology were emphasized in the past, management and methodology were emphasized recently, and positive perception of smart cities was growing. The study could be used as basic data for the past, present and future of smart cities in Korea at a time when smart city services are being built across the country.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.11a
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• pp.749-749
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• 2017

최근 들어 사회문제 해결형 과학기술혁신 활동이 활성화되고 있다. 과학기술정보통신부에서 추진하는 국민생활연구사업, 그리고 혁신본부에서 기획하고 있는 사회문제 해결을 위한 다부처 공동 기획사업 등이 추진되고 있다. 사회문제 해결형 과학기술혁신은 사회문제 해결을 최우선 목표로 삼고 있기 때문에 수월한 과학기술지식의 창출, 산업경쟁력 강화를 위한 혁신과는 목표와 추진체제가 다르다. 사회문제 해결형 과학기술혁신은 사회혁신과 과학기술을 결합하는 활동이라고 할 수 있다. 이렇게 새로운 유형의 혁신활동이 등장하면서 이를 바라보는 다양한 관점이 존재하고 있다. 본 발표에서는 각 논의들을 정리하고 향후 사회문제 해결형 과학기술혁신의 발전방향을 제시한다. 여기서는 크게 3가지 분류로 사회문제 해결형 혁신을 보는 관점을 정리한다. 첫 번째는 전문가 중심의 관점(Innovation for people)이다. 이는 전문가가 분석과 논의를 통해 사회문제를 정의하고 그 대안을 제시하는 접근이다. 많은 과학기술전문가들이 가지고 있는 틀로서 선형모델에 입각한 논의이다. 때문에 혁신의 선형모델이 가지고 있는 문제점, 피드백의 부족, 현장에 대한 이해 부족 등과 같은 단점이 있다. 두 번째는 시민사회 중심의 관점(Innovation by people)이다. 이는 현장의 문제 상황에 있는 시민들이 문제를 정의하고 혁신활동을 주도해야 한다는 관점이다. 이 관점은 일반 시민을 과학기술혁신의 주체로 호명하고 실질적인 문제 해결에 참여시키면서 주류 과학기술의 미흡한 현장 지역 지향성을 비판하고 있다. 그러나 혁신의 논의가 지역에 한정되면서 규모 확대의 어려움을 겪는 경우가 많다. 장기 지속성을 확보하는 데에도 난점이 있다. 세 번째는 전문가와 시민의 협업 관점(Innovation with people)이다. 이는 시민성과 전문성의 결합을 통해 민주주의를 고양하고, 현장 지식과 전문 지식의 융합을 지향하는 접근이다. 또 리빙랩과 같은 추진 체제를 적극적으로 활용한다. 그러나 전문가와 시민사회의 협업을 지원하는 인프라와 지원체제가 부족하면 여러 문제점이 발생할 수 있다. 본 연구에서는 이런 관점들의 한계를 극복하기 위해서 국지적 문제해결과 국가적 문제 해결의 연계, 실험의 중요성 강조, 전문가와 최종 사용자 및 시민의 실질적 협업을 위한 기반 구축, 시스템 전환 프레임의 도입을 정책 방향으로 제시했다.