Crack이 있는 圓形孔 周圍의 應力分布에對한 Analytic Continuation 槪念의 이용

金基郁 空軍士官學校 1978 論文集 Vol.9 No.-

안전도시 부산 구현을 위한 자연재난 회복탄력성 제고 방안

김기욱,박봉철,허종배,구윤모,강지윤 부산연구원 2021 부산발전포럼 Vol.- No.191

마찰계수와 재료강도를 고려한 PSC 박스 거더교의 최적설계

김기욱,Kim, Ki Wook 한국강구조학회 2006 韓國鋼構造學會 論文集 Vol.18 No.2

본 연구는 FSM 공법의 PSC 박스 거더교를 최소경비로 자동 설계하는 최적설계 프로그램을 이용하여 곡률마찰계수와 파상마에 대한 적정한 긴장재의 종류를 찾아내고 향후 긴장재의 연구 개발 방향을 제시하였으며, 사용되는 재료의 강도증진에 대한 연구방향을 제시하는데 본 연구의 목적이 있다. 사용된 최적설계 프로그램은 축차 무제약 최소화 기법을 이용하였고, 설계과정에서 설계점들이 설계가능 영역밖에 있는 것을 허용할 수 있도록 Kavlie가 제안한 확장 벌칙함수를 도입하였다. 또한 설계점들의 탐사 방법은 Powel's direct search method를 사용하며, 설계시간을 단축시키기 위해 설계점 변화에 따른 단면력 변화를 Gradient를 이용하여 근사화 시키는 방법을 사용하였다. This study analyzes the effects of the curvature friction coefficient, the wobble friction coefficient, and the increased strength of concrete, reinforced tendon on optimum de signs by using the optimum-design program, to minimize the cost of a PSC box girder bridge using the full staging method. The objective of this study is to find a proper tendon for the friction coefficient, and thereafter, to indicate the direction of the study development about tendons and to indicate the direction of a study on the increased strength of used materials. This program used the SUMT procedure and Kavlie's extended-penalty function to allow infeasible design points in the process. Powel's direct method was used in searching design points, and the gradient approximate method was used to reduce the design hours.

시민안전 확보를 위한 안전감찰 방안연구

김기욱,이정석,박현정,이원규 부산연구원 2019 연구보고서 현안연구 Vol.2019 No.0

코로나19 사태 이후 부산시 신종감염병 대응 방안

김기욱,황영순,허종배,박봉철,구윤모,박충훈,강지윤 부산연구원 2020 연구보고서 정책연구 Vol.2020 No.0

At the end of 2019, a new type of pneumonia, confirmed as COVID-19 afterward, has first broke out in Wuhan, the capital city of Hubei province in China. As of Sep. 20, 2020, 30,675,675 cases and 954,417 deaths has been reported worldwide and the number is still increasing steeply. This study aims to suggest countermeasures against emerging infectious diseases which is likely to occur in near future based on experiences and lessons acquired from the COVID-19 pandemic. This includes definition and case studies of emerging infectious diseases, a disease response system(or framework) in Korea and Busan, and analyses of the COVID-19 outbreak characteristics and its response in Korea. The countermeasures are drawn in five different areas of the response, including health and medical services, economy, information and communications technology, administrative and finantial planning, and urban planning areas. The health and medical services, and economy are the key areas, the information and communications technology, and administrative and finantial planning are the supportive ones to stimulate the responses. Urban planning makes a city resilient to the diseases and possible to efficient responses. As this study only suggets comprehensive and rough outlines for the preparedness and responses in the five areas, it should be followed by concrete and detailed plannings.

재난위험도평가를 통한 효율적 재난대비전략 구축방안

김기욱,황영우 부산연구원 2018 연구보고서 정책연구 Vol.2018 No.0

Subparagraph 1 of Article 3 in 「Framework Act on the Management of Disasters and Safety」 classifies disasters into natural disasters and social accidents. Frequency and impact of the disasters have been increased recently because of various reasons, including climate change, increase in social complexity, etc. Limited resources for disaster management in finance and manpower impede ample countermeasures to mitigate various risks that trigger the disasters, and this requires the resources to be effectively and efficiently applied for disaster management considering the best possible use of the resources. This study establishes comprehensive outlines for disaster preparedness strategy. This includes the hazard risk assessment to Busan Metropolitan City, providing outlines for the management of disasters with high priority, and drawing measures for baseline capabilities to commonly deal with multiple hazards. Twelve disasters, including six natural disasters and six social accidents that have been frequently occurring or are likely to occur in near future in Busan and its vicinity, were chosen for the hazard risk assessment. Twenty-four experts on disaster management were interviewed and assessment factors were evaluated for each disaster. The factors are divided into two stages. The first stage factors include impact and likelihood; the second stage factors include fatality, economic loss, environmental damage, and social damage, which are aggregated into the impact. Weights of the factors were estimated using Analytical Hierarchy Process. Weighted averages of the second and the first stage factors have been calculated for the impact and the hazard risk, respectively. The result suggests infectious disease, fine and yellow dusts, storm and flood, atomic accident, and earthquake are with relatively high priorities which need corresponding countermeasures while functional planning is also required to improve the baseline capabilities for mitigating risks from multiple probable disasters. Outlines of the disaster preparedness strategy with regard to the five major disasters and measures for the functional planning were suggested. The result of this study could be used as a baseline data for establishing the disaster preparedness strategy and for developing future research. Standardization of the methodology for the hazard risk assessment is also required to secure the effectiveness of the data collection and the reliability of the assessment.

논문(論文) : 『황제하마경(皇帝蝦마經)』에 관(關)한 연구(硏究)

김기욱,박현국 대한한의학원전학회 ( 구 대한원전의사학회 ) 2002 대한한의학원전학회지 Vol.15 No.2

Dropwise condensation induced on chromium ion implanted aluminum surface

김기욱,이영진,정지환 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.1

Aluminum substrates are irradiated with chromium ions and the steam condensation heat transferperformance on these surfaces is examined. Filmwise condensation is induced on the surface ofaluminum specimens irradiated with chromium ion dose of less than 1016 ions/cm2 while dropwisecondensation occurs on the specimens irradiated with chromium ion dose of 5 1016 ions/cm2 in therange of ion energy from 70 to 100 keV. The heat transfer coefficient of the surfaces on which dropwisecondensation occurs appeared to be approximately twice as much as the prediction by Nusselt’s filmtheory. In a durability test, dropwise condensation lasts over six months and the heat transfer coefficientis also maintained.

민선 7기 부산시 재난 대비, 효율적으로 하려면

김기욱 부산연구원 2018 BDI 포커스 Vol.- No.342

○ 재난 발생 빈도와 피해 규모가 갈수록 증가하는 추세에 대응해 민선 7기 부산시는 안전을 시정운영 최우선 원칙의 하나로 천명 - 하지만 인력, 예산 등 한계로 모든 재난에 대한 완벽한 대비는 불가능한 상황에서 효율적인 재난대비전략 구축이 요구 ○ 부산시가 재난대비를 효율적으로 하려면 재난별, 통합적 재난대비전략의 동시 구축이 중요 - 재난별 대비전략 구축을 위해 ▲도시배수시스템 정비 ▲홍수량 유역분담을 위한 방안 마련 ▲침수지도 데이터베이스 구축 ▲선진화된 예 · 경보시스템 구축 ▲원자력사고 효율적 대응 시스템 구축 ▲안전한 시설물 설치를 위한 설계기준 강화 등 필요 - 통합 재난대비전략 구축을 위해 ▲광역방재거점 조성 방안 마련 ▲재해구호물자 확충 ▲명확하고 효율적인 업무분장 등 필요

SWMM 모의이력 DB 기반의 도시침수 위험지역 분석모델

김기욱,김상단,김창수 한국방재학회 2012 한국방재학회논문집 Vol.12 No.1

The main objective of this paper is to develop the model for flooding area decision including location, slope, elevation and depth of the flooding area and runoff drainage system thorough SWMM simulation DB and for the display model of the flooding areas. This model also provides the searching service to the historical flooding areas. ArcObject GIS engine and Oracle DBMS is used to model development, and the prototype system programmed with C# is applied to verify the model. The result of the model application analyzes flooding hazard areas of 143.47m2 with flooding depth of 0.08m. The six drainage systems is required improvement for discharge capacity. This research can be used the element technology of the disaster historical system for areas prone to floods. 본 연구의 목적은 Storm Water Management Model (SWMM) 모의 DB(Database System)를 통해 강우량에 따른 침수유역의 위치, 경사 및 고도, 침수심 및 통수능 부족관거와 유출량 등의 침수위험정보를 동적으로 공간DB에 구축하고, GIS기반의시스템에 표출하기 위한 모델을 개발하는데 있다. 또한 개발한 모델은 침수위험지역 및 과거 침수실적 지역에 대한 사용자 검색 서비스를 제공한다. 모델의 개발을 위해 ESRI사의 ArcObject GIS 엔진과 오라클 데이터베이스 관리 시스템을 사용하여침수이력에 대한 데이터를 구축하였으며, C#기반의 통합침수관리를 위한 프로토타입 시스템을 개발하여 부산시 온천천 유역을대상으로 모델을 적용하였다. 모델 적용결과 199 mm/15h 강우 시 143.47 m2의 지역이 평균 0.08 m의 침수심을 가지는 침수위험지역으로 분석되었으며, 6개의 관거시스템이 개선공사가 필요한 것으로 분석되었다. 본 연구결과는 상습침수지역 관리를 위한 재해이력 구축시스템 개발의 요소기술로 활용될 수 있을 것이다.