• 지역연구
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• 제35권3호
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• pp.25-32
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• 2019

도시문제 해결과 함께 4차 산업혁명의 신(新)성장동력 창출을 위해 세계적으로 스마트시티의 전략적 가치가 증대하고 있다. 우리 정부는 2003년 '유비쿼터스 도시(U-City)'를 한국의 고유 스마트시티 브랜드로 도입하여 추진하였다. U-City의 한계 극복을 위해 2018년 백지상태 부지에 4차 산업혁명기술의 테스트베드로서 국가 시범도시(세종 5-1생(生), 부산 EDC; Eco Delta City) 조성을 포함한 「스마트시티 추진전략」이 수립 및 발표되었다. 이후 국내외 변화된 여건과 그간의 정책에 대한 평가를 바탕으로 도시성장단계별(신규-기존-노후) 맞춤형 스마트시티 조성·확산 정책을 제시하고 있다. 스마트시티 조성 및 확산은 혁신 생태계 구축 및 글로벌 이니셔티브 강화를 위한 중장기 로드맵으로 제3차 스마트도시 종합계획('19~'23)을 중점으로 추진되고 있다. 아울러, 정부는 스마트시티 정책을 추진하는 데에는 시민, 민간기업, 지자체 등 다양한 주체가 함께 참여하여 따뜻한 삶의 공간으로 열린 도시이자 포용 도시로서 스마트시티를 조성 및 추진하는 것이 중요할 것으로 판단된다.

• 자연, 터널 그리고 지하공간
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• 제16권3호
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• pp.12-22
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• 2014

• Composites Research
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• 제31권3호
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• pp.83-87
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• 2018

An object in the Low Earth Orbit (LEO) is affected by many environmental conditions unlike earth's surface such as, Atomic oxygen (AO), Ultraviolet Radiation (UV), thermal cycling, High Vacuum and Micrometeoroids and Orbital Debris (MMOD) impacts. The effect of all these parameters have to be carefully considered when designing a space structure, as it could be very critical for a space mission. Polybenzimidazole (PBI) is a high performance thermoplastic polymer that could be a suitable material for space missions because of its excellent resistance to these environmental factors. A thin coating of PBI polymer on the carbon epoxy composite laminate (referred as CFRP) was found to improve the energy absorption capability of the laminate in event of a hypervelocity impact. However, the overall efficiency of the shield also depends on other factors like placement and orientation of the laminates, standoff distances and the number of shielding layers. This paper studies the effectiveness of using a PBI coating on the front bumper in a multi-shock shield design for enhanced hypervelocity impact resistance. A thin PBI coating of 43 micron was observed to improve the shielding efficiency of the CFRP laminate by 22.06% when exposed to LEO environment conditions in a simulation chamber. To study the effectiveness of PBI coating in a hypervelocity impact situation, experiments were conducted on the CFRP and the PBI coated CFRP laminates with projectile velocities between 2.2 to 3.2 km/s. It was observed that the mass loss of the CFRP laminates decreased 7% when coated by a thin layer of PBI. However, the study of mass loss and damage area on a witness plate showed CFRP case to have better shielding efficiency than PBI coated CFRP laminate case. Therefore, it is recommended that PBI coating on the front bumper is not so effective in improving the overall hypervelocity impact resistance of the space structure.

• 한국가구학회지
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• 제19권4호
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• pp.283-293
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• 2008

This study is intended to forecast changes in Ubiquitous technology-based residential environment since the digital revolution so as to suggest the direction of furniture design in the near future. Among Ubiquitous technologies, the intelligent digital technology applied to a residential environment is defined as "Smart Digital Technology." Ministry of Commerce, Industry and Energy named the residential environment where such technology is applied "Smart Home." Smart Home is strategically creating intelligent residential environment where interactivity is made between human, furniture and residential environment, based on home automation, home network and intelligent sensor technology. Smart furniture is based on strategic characteristics of smart home. Its convergence with IT equipments is being made. Largely, smart furniture has three characteristics as below: First, smart furniture provides users with information on home management, health management, education and fashion. not just functioning as storage space. Second, smart furniture that is a new lifestyle pattern will suggest a new aesthetic standard based on unsettled shapes and innovative structure. Finally, it gives convenience to users intelligently. Namely, smart furniture, "intelligent informative furniture", will be suggested as a new paradigm.

• Asian Journal of Innovation and Policy
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• 제10권2호
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• pp.159-176
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• 2021

Over the past two decades, smart cities have been attracting attention as a means of solving urban problems and as a model for securing urban sustainability. Many studies have been conducted in various fields such as conceptual definitions, classification, new technologies, case analysis, and civic participation of smart cities. In particular, applicable technologies and their importance have been highlighted so far. However, since a city is a complex and meta-systematic space, it is the overly optimistic prospect that technology, one of the smart city components, will lead to successful smart cities. This study elucidates the impediments to driving smart cities as a case study of South Korea, a leading country in smart technology and digital transformation. We examined three comprehensive national plans for promoting smart cities and conducted focus group interviews with experts in smart cities to analyze the obstacles to carrying smart cities. We classified the thirteen impediments into technological, industrial, governmental, and social factors as a result. Some of them are generic issues in policy establishment and enforcement, while others are specific to smart cities.

• 한국실내디자인학회논문집
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• 제22권1호
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• pp.256-264
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• 2013

A bathroom in house has been stressed not only as a space for physiology and hygiene but also leisure and healthcare. However, the bathroom is the most likely space where an elderly person can have an accident and it is uncomfortable space for them because of their deteriorating physical ability. So the purpose of this study is to help the elderly use their bathroom conveniently by providing smart service. Therefore, we carry out 18 smart service patterns that contain assistive devices and sensors for bathroom. Considering applicability and frequency, from among these service patterns, we suggest 4 service patterns. First is a fall prevention service. This service helps elderly use the bathroom safely at night. Second is a getting ready to go out service. This service helps the situation that elderly use the bathroom after getting up in the morning. Third is a security service in daily life especially before or after meals. And final is a service regarding personal hygiene service after returning home. This service helps to shower or bathe after return home. These services have positive influence in medical expense reductions, good health care and self-reliance of elderly.

• 한국산업정보학회논문지
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• 제24권4호
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• pp.29-36
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• 2019

본 논문은 주차장에서 운전자의 다양한 선호도를 고려하여 실시간으로 주차 가능한 주차면을 안내하는 방안을 제안한다. 본 시스템은 주차장 진입 시부터 사용자가 유휴 주차면에 주차할 때까지, 각 주요 지점에서 차량을 검지함으로써 각 경로상 교통상황을 활용하고, 각 주차 구역 내의 주차 가능 주차면 및 목적지 근접도 등의 사용자 선호도에 가장 적합한 유휴 주차면을 실시간으로 탐색하여 각 안내 지점에서 최적의 경로를 안내한다. 이를 위하여 본 논문은 최적경로 안내를 위한 다양한 사용자 선호도 기반의 비용 함수를 제안하고 본 시스템의 가능성을 평가하기 위해 이벤트 기반 시뮬레이터를 설계하고 구현한 결과를 제시한다.

• 한국항공우주학회지
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• 제30권8호
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• pp.56-64
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• 2002

본 연구에서는 다중 적층 구조의 스마트 스킨에 대한 개념 설계, 제작을 하였으며, 압축 실험을 통해 스마트 스킨의 거동 특성을 확인하였다. 상용 유한요소 소프트웨어인 NASTRAN 을 이용한 선형 압축 해석을 통해 스마트 스킨의 층별 응력 분포를 예측하였으며, 최초 파괴층을 예측하였다. 압축 시험과 선형 비선형해석 결과를 비교하여 유한요소 모델의 신뢰도를 검증하였으며, 본 모델을 이용한 설계 인자 해석을 통해 스마트 스킨 설계 자료를 확보하였다. 하니컴 심재의 전단탄성계수가 굽힘 변형과 전단 변형이 동시에 발생하는 스마트 스킨의 좌굴 하중에 큰 영향을 미치는 것을 화인하였다.

• 한국항공우주학회지
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• 제43권3호
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• pp.272-281
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• 2015

초소형 스마트탄은 탄도를 수정하여 손쉽게 목표물을 타격할 수 있도록 고안된 개인 휴대용 유도미사일이다. 초소형 스마트탄은 유도미사일에 준하는 기능을 수행하는데 반하여 그 크기가 일반 병사들이 쉽게 휴대할 수 있도록 축소됨으로써 아군의 전력과 생존율을 크게 높일 수 있을 것으로 기대된다. 본 논문에서는 초소형 스마트탄의 탄도수정을 위해 사용된 구동장치를 중심으로 해외에서 선행된 기술개발 사례와 특허들을 수집해 보았다. 이를 바탕으로 초소형 스마트탄의 개발을 위한 소요기술들을 분석해 보고, 추후 개념설계를 위한 초석을 마련하였다.

• 대한산업공학회지
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• 제40권1호
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• pp.128-134
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• 2014

With the development of Information Communication Technology and a way of solving problems such as productivity improvement, advanced working attitude, greenhouse gas reduction, low birth rate, aged problem, etc., the need of smart work is increasing. Getting out of legacy working types that are limited in time and space, the flexible seat system at a smart work center that supports the smart working environment is proposed. However, the seat choice based on employee's emotional judgement may cause the decline of forming cooperative space and mutual communication because of the scattered seat arrangement between employees. This paper proposed a seat recommendation method for the mutual cooperation at a smart work center. The method is based on a work similarity of employees. A prototype system also implemented to show the feasibility.