• 센서학회지
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• 제28권1호
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• pp.7-12
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• 2019

Significant progress has been made recently in detection of highly sensitive volatile organic compounds (VOCs) using chemical sensors. Combined with the progress in design of micro sensors array and electronic nose systems, these advances enable new applications for detection of extremely low concentrations of breath-related VOCs. State of the art detection technology in turn enables commercial sensor systems for health care applications, with high detection sensitivity and small size, weight and power consumption characteristics. We have been developing an intelligent electronic nose system for detection of VOCs for healthcare breath analysis applications. This paper reviews our contribution to monitoring of respiratory diseases and to diabetic monitoring using an intelligent electronic nose system for detection of low concentration VOCs using breath analysis techniques.

• ETRI Journal
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• 제30권6호
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• pp.862-864
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• 2008

This letter presents a novel approach for organizing computational resources into groups within H.264/AVC motion estimation architectures, leading to reductions of up to 75% in the equivalent gate count with respect to state-of-the-art designs.

• Smart Structures and Systems
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• 제13권6호
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• pp.891-899
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• 2014

Over the past several decades, substantial amounts of sensors and sensing systems have been developed for civil infrastructure systems. This special issue focuses on state-of-the-art robotics and automation technologies, including construction automation, robotics, instrumentation, monitoring, inspection, control, and rehabilitation for civil infrastructure. The issue also covers construction informatics supporting sensing, analysis and design activities needed to operate smart and sustainable civil infrastructure. Examples include robotic systems applied to civil infrastructure and equipped with various sensing technologies, such as optical sensors, laser sensors, wireless sensors, multi-sensor fusion, etc. This special issue is published in an effort to disseminate current advances of various robotics and automation technologies for civil infrastructure and built environment.

• 제어로봇시스템학회논문지
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• 제20권3호
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• pp.235-244
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• 2014

This article introduces recent trends in RHC (Receding Horizon Control), also known as MPC (Model Predictive Control), that has been well recognized in industry and academy as a systematic approach for optimal design and constraint management. Constrained and robust RHCs will be briefly reviewed with milestone results. Among the diverse developments and achievements of RHCs, implementation issues will be focused on, together with the latest applications. In particular, this article introduces results on how to solve a finite horizon open-loop optimal control problem in an efficient way, together with code generation for real-time execution and easy implementation. Instead of traditional applications such as refineries and petrochemical plants, this article highlights some selected emerging applications, such as energy management systems and mechatronics, that have resulted from state-of-the-art high performance computing power and advanced numerical schemes.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제27권3호
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• pp.27-37
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• 2021

Purpose: The purpose of this study is to compare the changes in hospital accreditation evaluations, the changes in hospital building design guidelines, and the development of design indicators for reducing medical accidents in the state-of-the-art healthcare providers. Methods: The changes and tools were carefully investigated and compared that had been taken place and used in the building certification standards, design guidelines, and patient safety design standards to reduce accidents in the United States and the United Kingdom. Results: First, medical accidents are recognized as multiple defense layers rather than personal ones, and a public reporting and learning system is created, reporting the accidents in question publicly and suggesting ways to improve them based on the data at a time. Second, for the accreditation institute that secures the service quality of medical institutions, detailed standards for patient safety are continuously updated with focus on clinical trials. The United States is in charge of the private sector, but on the other hand the United Kingdom is in charge of the public sector. Third, the design guidelines are provided as web-based tools that complement various guidelines for patient safety, and are improved and developed as well. Fourth, detailed approaches are continuously developed and provided to secure patient safety and reduce medical accidents through appropriate research, evidence-based design and strict evaluations. Implications: When medical institutions make efforts to strength patient safety methods through valid design standards, accidents are expected to decrease, whereby hospital finances are also to be improved. A higher level of medical quality service will sure be secured through comprehensive certification evaluation.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -1
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• pp.670-673
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• 2002

This paper proposes a digital algorithm for gray-scale/color image segmentation of real-time video signals and a cell-network-based implementation architecture in state-of-the-art CMOS technology. Through extrapolation of design and simulation results we predict that about 300$\times$300 pixels can be integrated on a chip at 100nm CMOS technology, realizing very high-speed segmentation at about 1600sec per color image. Consequently real-time color-video segmentation will become possible in near future.

• 국제초고층학회논문집
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• 제11권3호
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• pp.221-226
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• 2022

Installation of Structural Health Monitoring (SHM) system is a legal obligation for high-rise buildings over 200 m or 50-floor high in South Korea. CNP Dongyang has developed key technologies for SHM system design, installation, and data analyzing. Also, CNP Dongyang has applied SHM technology to a plenty of South Korea's representative high-rise buildings. The SHM technology, also, could be used in safety management of construction phase, evaluation of structural performance, etc. In this paper, state of the art SHM technologies and their application examples are introduced to give insight for future research and practical use of SHM.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2012년도 춘계학술발표회 초록집
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• pp.317-320
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• 2012

급속한 산업의 발달과 기술의 향상으로 건물은 점점 고층화, 다양화되고 있지만 이러한 건물에서 화재 시 대응방안은 아직 미흡한 실정이다. 건물이 다양해짐에 따라, 그에 따른 건물의 화재거동 또한 건물 내의 가연물의 양, 종류 및 건물의 용도 등에 따라 다른 양상을 띠고 있기 때문에 화재에 영향을 미치는 여러 가지 요소들을 충분히 고려하여 건물의 내화성능을 충족하여야 한다. 따라서 본 연구는 화재로 인한 인명과 구조적 피해를 줄이고 보다 안전한 건축물을 설계하기 위하여 미국의 건축물 내화설계 절차에 관한 연구를 통하여 우리나라에 적합한 성능적 내화설계법을 도입하기 위한 기반자료를 도출한다.

• Advances in Computational Design
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• 제3권3호
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• pp.233-267
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• 2018

Conventional seismic design of concentrically braced frame (CBF) structures suggests that the gusset plate connecting a steel brace to beams and/or columns should be designed as non-dissipative in earthquakes, while the steel brace members should be designed as dissipative elements. These design intentions lead to thicker and larger gusset plates in design on one hand and a potentially under-rated contribution of gusset plates in design, on the other hand. In contrast, research has shown that compact and thinner gusset plates designed in accordance with the elliptical clearance method rather than the conventional standard linear clearance method can enhance system ductility and energy dissipation capacity in concentrically braced steel frames. In order to assess the two design methods, six cyclic push-over tests on full scale models of concentric braced steel frame structures were conducted. Furthermore, a 3D finite element (FE) shell model, incorporating state-of-the-art tools and techniques in numerical simulation, was developed that successfully replicates the response of gusset plate and bracing members under fully reversed cyclic axial loading. Direct measurements from strain gauges applied to the physical models were used primarily to validate FE models, while comparisons of hysteresis load-displacement loops from physical and numerical models were used to highlight the overall performance of the FE models. The study shows the two design methods attain structural response as per the design intentions; however, the elliptical clearance method has a superiority over the standard linear method as a fact of improving detailing of the gusset plates, enhancing resisting capacity and improving deformability of a CBF structure. Considerations were proposed for improvement of guidelines for detailing gusset plates and bracing members in CBF structures.

• 한국콘텐츠학회논문지
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• 제9권12호
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• pp.173-180
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• 2009

경제적 생활수준 향상에 따른 예술과 디자인에 대한 사회적 욕구상승은 예술의 경제적 가치를 인식한 산업계의 경영전략과 합류하여 새로운 물길을 만들고 있다. 그 결과 사회적 수요와 공급자의 인식의 변화에 힘입은 각종 예술 및 디자인전시는 그 양적 증가와 더불어 전시방법에 있어서도 많은 변화를 보였다. 특히 최근의 전시경향은 전통적 의미의 전시관에서 뿐 만 아니라 현대 건축물이 제공하는 다양한 공간에서도 빈번하게 기획된다. 이렇게 최근의 전시는 전시 목적이외의 환경에서 열리는 까닭에 각 전시공간의 독특한 환경에 적합한 맞춤형 전시기획이 요구된다. 현대의 다양한 건축물의 내 외부 공간에서 이루어지는 최근의 전시 중에서 한 사례를 분석함으로써 전시기획에 대한 새로운 방법론을 모색하고자 한다. 연구의 이론적 근거로써 현대 상업적, 비상업적 전시의 원류가 된다고 판단되는 20세기 설치미술에 관한 역사적 배경과 이론적 근거를 고찰한 후 최근의 전시기획과 어떤 맥락에서 접점을 찾을 수 있는지를 밝혀 보았다. 본론에 예시된 사례는 2009.06.10부터 06.19까지 서울예술대학의 종합 강의동인 마동 1층 로비에서 개최 되었던 포스터디자인 전시회이다. 서울예술대학과 미국 캘리포니아 주립 노스리지대학교(California State University, Northridge)와 공동개최한 국제교류 환경포스터 디자인전은 불특정공간에서의 전시기획의 한예로 적정하다고 판단되었다. 이 전시회의 전시기획과 그 전개방법은 다양한 전시환경에서의 전시가 당면하는 문제점과 그에 대한 대안을 도출하는 과정을 보여준다. 또한 전시기획자에게는 주어진 공간에서의 전시의 기획에 있어 유연한 태도와 창의적 사고를 가지고 접근해야 한다는 점을 주지시키고 있다.