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윤지예(Jee-Ye Yoon),임혜숙(Hyesook Lim) 대한전자공학회 2020 대한전자공학회 학술대회 Vol.2020 No.11
Counting Bloom Filter(CBF), Quaternary Bloom Filter(QBF) and Invertible Bloom filter(IBF) are structures that can do delete operation by modifying the standard Bloom filter. CBF can have overflow, which can lead to false negatives. QBF, which is composed of a 2-bit counter, indicates the corresponding cell as an X when three or more elements are mapped. There is no false negative in QBF because deletion does not occur for cells with X. The 6-bit invertible Bloom filter(IBF) used in this paper consists of two fields : 4-bit signature and 2-bit counters. In this paper, we compare the performance of three types of bloom filter: 4-bit CBF, QBF and 6-bit IBF. Simulation results show that QBF has the lowest false positive rate.
근린환경의 실외 놀이공간 형평성에 관한 연구 - 주거빈곤아동 밀집지역의 놀이터와 어린이공원을 중심으로 -
유다은(Yoo, Da-Un),이지원(Lee, Jee-Won),윤지예(Yoon, Ji-Ye) 대한건축학회 2022 대한건축학회논문집 Vol.38 No.10
The Outdoor play environment is a very important space in contributing to childrens health and development. There are considerable research activities regarding the quantitative distribution and equity of the outdoor play environment. However, in Korea, there are not enough studies examining the equity of childrens outdoor play environments. In this study, playgrounds and childrens parks data were created and collected using the ArcGIS Pro program to confirm the quantitative differences in outdoor play environments according to the distribution of children in housing poverty in Seoul. By analyzing the spatial distribution pattern of children in housing poverty in Seoul, a total of 26 administrative boundaries were selected as the site. The number and area of play environments for each group was calculated and compared. As a result of the analysis, the low-group with a significant number of children in housing poverty suffered a double deficiency compared to the mid- or high-group in terms of the number, area, density of playgrounds and area of childrens parks. To overcome such inequity, it is necessary to supply outdoor play environments more equitably in terms of multidimensional aspects such as the number, area, and density. In addition, it is necessary to consider the area of residence, the number of children, and the main housing type.