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신뢰도를 요구하는 임베디드 시스템에서의 저전력 태스크 스케쥴링
김경훈,김유나,김종,Kim, Kyong Hoon,Kim, Yuna,Kim, Jong 대한임베디드공학회 2008 대한임베디드공학회논문지 Vol.3 No.1
In this paper, we provide an adaptive power-aware checkpointing scheme for fixed priority-based DVS scheduling in dependable real-time systems. In the provided scheme, we analyze the minimum number of tolerable faults of a task and the optimal checkpointing interval in order to meet the deadline and guarantee its specified reliability. The energy-efficient voltage level at a fault arrival is also analyzed and used in the recovery of the faulty task.
김경훈,이두헌,김태영,Kim, Kyong-Hoon,Lee, Du-Heon,Kim, Tae-Yeong 한국건설관리학회 2015 건설관리 : 한국건설관리학회 학회지 Vol.16 No.2
현재 건설공사 사후평가시스템 입력과정에서 자료가 오류 및 누락이 발생되는 경우가 많아 데이터의 신뢰성이 떨어지는 경우가 많다. 이에 따라 본 연구에서는 사후평가 결과분석의 신뢰성 확보를 위해 건설공사 사후평가시스템의 입력누락 및 입력오류에 대한 세부적인 분석을 실시하였다. 분석결과, 건설사업 초기 단계일수록 자료의 미입력된 자료의 비중이 높게 나타났다. 그리고 분석된 등록오류로는 참고자료의 부정확, "원" 단위 오류, 입력항목에 대한 이해부족 등으로 나타났다. The data are often missed and many errors of the data are generated in the input process for the post evaluation system on the construction projects, and the reliability of the data falls down much. Accordingly, the detailed analysis about missing and error of data was conducted to ensure reliability of the analysis results about post evaluation on the construction projects. As results in this study, a lot of input data were missed at the initial construction phase, and the data errors were found in the inaccuracy of reference reports, the lack of understanding about input data, and the failure of KRW unit.
김경훈,이두헌,Kim, Kyong-Hoon,Lee, Du-Heon 한국건설관리학회 2015 한국건설관리학회 논문집 Vol.16 No.4
In this study, the road construction field of high impact in the construction industry were selected, and the analysis of the detailed technology level was carried out. and we derived the main fields for future overseas. As results, the technology level of road facilities in korea was high about road operations and management sector, while it was relatively row about road pavements. And this study, we analyzed the economic, social and technological priority, and derived main fields to have the high investment efficiency. A derived items are found to be "maintenance-free Modular Road Pavements" and "Cities temperature reduction-type road". 본 연구에서는 건설산업에 있어서 파급효과가 높은 도로시설물을 선정하여, 세부적인 기술수준 분석을 실시하고, 향후 해외 진출을 위한 중점추진분야를 도출하였다. 분석결과, 한국의 도로시설물에 대한 기술수준은 도로 운영 및 관리기술 부문에 대한 기술수준이 높은 반면, 도로포장기술 부문은 상대적으로 낮은 기술수준을 보유한 것으로 나타났다. 그리고 본 연구에서는 경제적, 사회적, 기술적 중요도를 분석하여 투자효율이 높을 것으로 판단되는 중점 추진 분야를 도출하였으며, 도출된 항목으로는 "무보수 모듈러 도로포장 기술"과 "도시 온도저감형 도로 기술"로 나타났다.
김경훈(Kyong-Hoon Kim),박재우(Jae-Woo Park) 한국콘텐츠학회 2018 한국콘텐츠학회논문지 Vol.18 No.2
가뭄, 홍수 등의 자연재난으로 인해 인명 손실이 많이 발생되고 있다. 특히 도시지역에 발생되는 집중호우로 인한 침수 피해는 인명 및 구조물에 심각한 피해를 발생시킨다. 이에 따라 본 연구에서는 침수피해가 높은 도시지역을 대상으로 사람들이 안전하게 대피할 수 있도록 하는 최적 대피경로에 관한 연구를 수행하였다. 이를 위해 Flo-2D 모형 및 A*알고리즘에 대하여 고찰하여 최적 대피경로를 도출하고자 하는 방법론을 설정하였다. Flo-2D모형을 통해 위험지역을 도출하였으며, 인원수가 많은 시작지점을 선정하고 홍수재난에 대해 안전한 대피지점을 선정할 수 있도록 하는 방법을 제시하였다. 그리고 A* 알고리즘을 활용하여 출발지점에서 안전한 대피지점까지 위험지점을 거치지 않고 최적의 대피경로를 도출하였다. 본 연구를 통해 대피경로 제시뿐만 아니라 도로정비와 대피시설물에 대한 사전 대비 자료로 활용될 수 있을 것으로 판단된다. There is a lot of loss of life due to natural disasters. In particular, flood damage caused by heavy rainfall in urban areas causes serious damage. Therefore, in this study, we conducted a study on the optimal evacuation route for safe evacuation of urban areas. We set up a methodology by reviewing Flo-2D model and A* algorithm. A Flo-2D model was used to derive the hazardous area, and we selected the starting points with many people and suggested ways to select safe evacuation sites. And the route was derived from the starting point to the safe evacuation point by using the A* algorithm. This study could be used not only for evacuation route but also for road maintenance and evacuation facilities.
김경훈(Kyong-Hoon Kim),류상훈(Sang-Hun Ryu),이용수(Yong-Soo Lee),정민수(Min-Su Jung),서경아(Kyung-A Seo) 한국산학기술학회 2014 한국산학기술학회 학술대회 Vol.2014 No.2
본 연구에서는 현재 수행되고 있는 재난안전 R&D과제들이 어떤 테마들을 가지고 연구가 진행되고 있는지를 분석하고 향후 재난안전 R&D 과제 추진방향을 위한 전략수립의 근거자료를 제시하고자 한다.
BIM 설계방식의 공동주택 설계경기 평가지표별 중요도 도출에 관한 연구
김경훈(Kim Kyong-Hoon),김은주(Kim Eun-Joo),김재준(Kim Jae-Jun) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.2
The purpose of this study is to establish indices to objectively estimate the result after progressing design competition by BIM system. This study focuses on the estimation indices in design competition for apartment. And the main idea of this research is classifying estimation factors for activity categories in BIM competition at first, and then set the importance degree of each factor. As a result of the analysis, the propriety of the construction cost plan is ranked first in the importance degree list of BIM design estimation in community housing, and the safety and rationality of structure plan, the design relevance of both space arrangement and inside space of architectural modeling part, the reasonableness of energy and life cycle cost are also considered as very important factors. This study result is expected to be used as a good reference to select the proper designer, design work, and design plan for community house and BIM design competition, which play an important role to improve the quality of architecture industry.
김경훈 ( Kim Kyong Hoon ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
The performance of the construction project is to be evaluated within 60 days of completion, according to relevant laws. It evaluates cost, construction period, design change, re-construction, safety, etc. for each project stage. And the project owners are inputting the evaluation results of the construction work into the construction project information system(CALS). The post-evaluation result information entered in this way can be referred to in the basic design of the construction project by referring to the related contents if there is a similar construction in the future. And It can also be used to predict and respond to the required period and cost by analyzing the accumulated data. In this study, in order to provide reference data that can be used in similar projects in the future, the latest analysis methods are reviewed and the possibility of future application is considered. Accordingly, this study intends to focus on the construction cost part among the indicators such as construction cost, construction period, design change, and re-construction that are currently being dealt with in post evaluation.
김경훈 ( Kim Kyong-hoon ),김균태 ( Kim Kyoon-tai ),전영훈 ( Jun Young-hun ),옥치열 ( Ok Chi-yeol ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2
Recently, maintenance of old facilities has emerged as a major issue. In particular, the demand for road cutting and excavation is increasing due to the aging of underground facilities such as water supply, sewage and city gas. In addition, the development of eco-friendly equipment is required due to the environmental problems of noise and dust. Therefore, this study intends to analyze the performance in terms of productivity of the eco-friendly road cutter developed as part of the development of eco-friendly equipment, and to derive improvements.