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자원 신뢰성 측정을 통한 효율적인 그리드 자원 스케줄링 모델
박다혜,이종식,Park, Da-Hye,Lee, Jong-Sik 한국시뮬레이션학회 2006 한국시뮬레이션학회 논문지 Vol.15 No.4
그리드 컴퓨팅은 단일 컴퓨터로는 해결할 수 없는 대용량의 작업을 처리하기 위해 제안되었다. 그리드 컴퓨팅은 지리적으로 분산된 이기종 자원들을 상호 연결하여 대용량의 작업들을 처리하는 새로운 차세대 컴퓨팅이다. 그런데, 분산된 이기종의 자원들을 모을 때에 많은 어려운 문제들이 발생한다. 특히, 자원들의 신뢰성을 보장하는 것은 가장 심각한 문제 중에 하나이다. 그래서 우리는 그리드 자원의 신뢰성을 측정하여 자원을 할당하는 그리드 자원 신뢰성 측정 스케줄링 모델을 제안한다. 우리는 자원의 상태 정보를 기반으로 하여 자원 신뢰성을 측정하고, DEVSJAVA 모델링과 시뮬레이션 환경에서 그리드 시뮬레이션 모델에 그리드 자원 신뢰성 측정 방법을 적용하였다. 그리고, 이 논문은 스케줄링 모델들의 Utilization, Job loss, Throughput 그리고 Average Turn-around Time 같은 파라미터들을 측정하였고, 자원 신뢰성 측정을 이용한 그리드 자원 신뢰성 측정 스케줄링 모델의 실험 결과들을 기존의 스케줄링 모델들(랜덤 스케줄링 모델, 라운드 로빈 스케줄링 모델)과 비교하였다. 이 실험 결과들은 자원 신뢰성 측정 스케줄링 모델이 랜덤 스케줄링 모델과 라운드 로빈 스케줄링 모델에 비해 효율적인 자원 할당과 안정적인 작업 처리를 제공한다는 것을 보여준다. Grid computing has been appeared for solving large-scaled data which are not solved by a single computer. Grid computing is a new generation platform which connects geographically distributed heterogeneous resources. However, gathering heterogeneous distributed resources produces many difficult problems. Especially. to assure resource reliability is one of the most critical problems. So, we propose a grid resource scheduling model using grid resource reliability measurement. We evaluate resource reliability based on resource status data and apply it to the grid scheduling model in DEVSJAVA modeling and simulation. This paper evaluates parameters such as resource utilization, job loss and average turn-around time and estimates experiment results of our model in comparison with those of existing scheduling models such as a random scheduling model and a round-robin scheduling model. These experiment results showed that the resource reliability measurement scheduling model provides efficient resource allocation and stable Job processing in comparison with a random scheduling model and a round-robin scheduling model.
계산 그리드 컴퓨팅에서의 자원 성능 측정을 통한 그리드 스케줄링 모델
박다혜(Da Hye Park),이종식(Jong Sik Lee) 한국컴퓨터정보학회 2006 韓國컴퓨터情報學會論文誌 Vol.11 No.5
그리드 컴퓨팅은 지리적으로 분산된 이기종의 자원들을 상호 연결하여 대용량의 컴퓨팅 문제들을 해하기 위해 개발되었다. 그리드 컴퓨팅은 다양한 자원들로 구성되어 있기 때문에 효율적이고 안정적인 작업 처리를 위해서는 자원 스케줄링 모델이 필요하다. 그래서 우리는 각 자원들의 성능을 측정하여 작업을 할당하는 자원 성능측정 스케줄링 모델을 제안하였다. 우리는 자원 성능 측정 수식을 이용하여 자원들을 평가하였고, DEVS 시뮬레이션 모델링 환경에서 자원 성능 측정 스케줄링 모델을 실험하였다. 그리고 우리는 자원 성능 측정 스케줄링 모델의 효율성을 증명하기 위해 자원 성능 측정 스케줄링 모델의 실험 결과들을 기존 스케줄링 모델들과 비교하였다. 이 실험 결과들은 자원 성능 측정 스케줄링 모델이 자원 관리를 개선하고 안정적인 작업 처리를 보장해 줄 수 있음을 증명해 줄 수 있었다. Grid computing has been developed for resolving large-scaled computing problems through geographically distributed heterogeneous resources. In order to guarantee effective and reliable job processing, grid computing needs resource scheduling model. So, we propose a resource performance measurement scheduling model which allocates job to resources with resource performance measurement. We assess resources using resource performance measurement formula, and implement the resource performance measurement scheduling model in DEVS simulation modeling.
박다혜(Park, Da-Hye),이영수(Lee, Young-Soo) 대한건축학회 2019 대한건축학회 학술발표대회 논문집 Vol.39 No.2
Most buildings around the world look similar today, regardless of their place and context. This uniformity of architecture was caused by the spread of international style, which acted as a force to uniformize the appearance of the world and to erase places and contexts. Therefore, this study finds a direction to move forward through research on critical regionalism, which presents problems with architecture that is uniform and blurs its connection with place and suggests creative alternatives through the harmony of the universal and the local.
Molecular Behavior of SF<sub>6</sub>+H<sub>2</sub> Structure II Hydrates
박다혜(Park, Da-Hye),이보람(Lee, Bo Ram),사정훈(Sa, Jeong-Hoon),이건홍(Lee, Kun-Hong),Sum, Amadeu K. 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
Sulfur hexafluoride (SF<sub>6</sub>), one of the most potent greenhouse gases, is known as a hydrate former and has been studied at the high pressure up to 1.3 GPa with gas mixtures and with aqueous surfactant. Since we regard SF<sub>6</sub> as a potential promoter molecule that can stabilize hydrate structure more effectively compare to the other promoters, further investigation is required to verify the stabilizing ability of SF<sub>6</sub> in the hydrate structure. However, the insoluble nature of SF<sub>6</sub> in water or gases hinders fine scale analyses. This work discusses the data obtained by using molecular dynamics simulations of structure II (sII) clathrate hydrates containing SF<sub>6</sub> and H₂. The simulations were performed using the TIP4P/Ice model for water molecule and a previously reported SF<sub>6</sub> molecular model (optimized at the pure SF<sub>6</sub> single phase system (Olivet and Vega, 2007)), and a H₂ molecular model (adapted from the THF+H₂ hydrate system (Alavi et al., 2006)). The simulations are performed to observe the stability of SF<sub>6</sub> and H₂ in the sII clathrate hydrate system with varying temperature and pressure conditions and occupancies of SF<sub>6</sub> and H₂, which cannot be easily tuned experimentally. We observe that stability of H2 enclathrated in the hydrate structure more affected by the occupancy of SF<sub>6</sub> molecules and temperature than pressure, which ranges from 1 to 100 bar.
박기성(Park, Ki-Seong),박다혜(Bak, Da-Hye),이상홍(Lee, Sang-Hong) 한국주거학회 2018 한국주거학회 학술대회논문집 Vol.30 No.2
The government implemented a urban regeneration project to deal with the problems occurring in rapidly growing cities of modern society. But due to the emergence of phenomena including conflicts with residents and gentrification, a urban regeneration Eoullim platform project has been implemented since 2018. The Eoullim platform is called a complex anchor facility, which integrates economic revitalization and urban support and management centers, aiming to improve life quality and restore communities in a decayed city. Moreover, this consists of functions, such as youth startup support, public rental stores, cultural facility formation, and welfare center formation. This study is intended to obtain fundamental research data, in order to stably establish the Eoullim platform, which attempts a quantitative increase, in the future. The study methods are as follows.
어울림 플랫폼의 기능 및 이용자 요구도에 따른 공간구성에 관한 연구 - 경상북도를 중심으로 -
박기성(Park, Ki-Seong),박다혜(Bak, Da-Hye),이상홍(Lee, Sang-Hong) 한국주거학회 2020 한국주거학회 논문집 Vol.31 No.1
The government implemented an urban regeneration project to deal with the issues that happen in rapidly growing cities of modern society, but there were various problems, insufficient infrastructure and a lack of programs for people in need of social care. Complex anchor facility, which integrates diverse functions, including revitalization of local economy, aiming to improve the quality of life in the sites selected for the project. This study was conducted to obtain basic research data of space composition considering functions of the Complex Anchor Facility can be settled down stably with a quantitative increase in future. For this study, first, the Complex Anchor Facility were examined, based on the press release from the Ministry of Land, Infrastructure, and Transport and Korea Land, since the Complex Anchor Facility was launched in 2018 and thus there is no literature data yet. Second, the present state of the project was investigated, based on the Complex Anchor Facility project plan. Third, spaces of the Complex Anchor Facility required for residents in the sites selected for the project were analyzed. On the basis of the analytic data of this study, space composition considering the functional needs of the Complex Anchor Facility was researched.