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교육 시설 생활인프라 특성을 고려한 지역 프로파일링 연구 - 서울시 광진구 중심으로 -
강우석,이희정,Kang, Woo-Seok,Lee, Hee-Chung 한국교육시설학회 2019 敎育施設 Vol.26 No.5
This study has a purpose to profile local sectors into meaningful groups by using facilities rates of Social Overhead Capital(SOC) for daily life. Comparing SOC for daily life among the meaningful groups, the profiling and comparison results bring the comprehensive understanding about the educational facilities in local sectors. For the research purpose, this study utilized Latent Profile Analysis(LPA) by using variables such as population, road information, SOC for daily life, usage of land, possession of land, and appraised value of land from the 2018 Geographic Information System(GIS) dataset of Gwangjin-gu, where is one of the administrative district of Seoul City. Results showed that there are four latent groups of sectors among 904 local sectors(100 squared-meters sector per each) in Gwangjin-gu. By comparing the four latent groups by using LPA, the results diagnose each sector's status and help to improve the policy about educational facilities. Specifically, by using dataset for SOC of daily life, there are four groups of local sectors and each group has different features. Based on the different features of local sector groups, there can be improved management of educational facilities matching with each group's features.
주민재정착 유도를 위한 요인의 중요도 분석 : 대전동구 공공주택사업을 중심으로
강우석,정경연,임산,황재훈 (사) 한국도시재생학회 2023 도시재생 Vol.9 No.1
The purpose of this study is to establish a stable resettlement of residents living in small rooms in connection with the 'Daejeon Dong-gu Public Housing Project' and the ‘Daejeon Station Urban Regeneration Revitalization Plan'. In order to derive the importance of factors for inducing resettlement of Jjokbang residents, the factors were summarized through literature research and the final factors were derived through expert FGI. Also important factors were analyzed through AHP analysis for support organizations. The implications of this paper according to the analysis results of the importance of resettlement inducing factors for residents of jjokbang are as follows. First, it is necessary to operate a ‘migration support counseling center’ to provide detailed information on temporary relocation and public rental housing to be settled in, as well as compensation information such as compensation receipt procedures, as well as to resolve the difficulties of move. Second, it is necessary for the public institutions to review the payment of housing relocation expenses to residents of jjokbang. Third, it is necessary to make efforts to form a consultative group of residents of jjokbang from the beginning of the project. Fourth, in order to prevent confusion that may occur due to differences in resettlement priorities of the residents of Jjokbang that each project participant thinks, it is essential to share roles and reach an agreement among participating entities. Fifth, it is necessary to prepare step-by-step countermeasures to realize the priorities of each project participant.
비선형 증폭된 육상이동 위성채널에서 디지털 전왜곡기의 성능
강우석,이상진,서종수 한국통신학회 1999 韓國通信學會論文誌 Vol.24 No.6
In this paper, two kinds of digital predistorters are proposed and their performances are analyzed in order to minimize ACI and SNR degradation caused by nonlinearly amplified TC-16QAM signal and to transmit high speed data in power and bandwidth limited land mobile satellite channel. Our simulation results show that LUT predistorter reduces the out-of-band ACI more efficiently as compared to intersymbol interpolated predistorter. Regarding the reduction of in-band SNR and total power intersymbol interpolated predistorter outperforms LUT predistorter. In the simulation mobile satellite channel and nonlinear HPA are modeled by Rician channel and Fujitsu SSPA, respectively. 본 논문은 전력 및 대역폭 제한적인 육상이동 위성통신 채널에서 고속 데이터를 전송하기 위하여 TC(Trellis-Coded)-16QAM 신호를 비선형 증폭할 때 발생하는 인접 채널간 간섭과 SNR 손실을 최소화하기 위한 두가지 방식의 디지털 전왜곡기를 제안하고 그 성능을 분석하였다. 전산모의실험 결과 이동위성 채널을 Rician 채널로 모델링하고 Fujitsu사의 SSPA(Solid-State Power Amplifier)를 비선형 HPA(High Power Amplifier)로 사용한 경우, LUT(Look-Up Table) 전왜곡기는 심벌간 보간 전왜곡기보다 대역의 인접 채널간섭을 효율적으로 억제할 수 있으며 대역내 SNR 손실과 총전력 손실에서는 심벌간 보간 전왜곡기가 보다 우수함을 보였다.
강우석,조창신 한국세라믹학회 2021 세라미스트 Vol.24 No.1
Growing attention to eco-friendly and sustainable energy sources makes people focus on the improvement of grid-scale energy storage systems. Lithium ion batteries have demerits for these applications due to the use of flammable non-aqueous electrolytes. With this regard, aqueous electrolytes have been actively investigated because of its safe property, fast charge/discharge rate capability, easy preparation process, non-toxicity, and eco-friendliness. Among many candidates for aqueous battery system, zinc ion has attracted considerable interests. Zinc has advantages of abundance, low redox potential, and high volumetric capacity. However, when used in alkaline electrolytes, several problems such as dendritic growth, formation of irreversible intermediates and capacity fade hamper its practical use. Even though mild acidic electrolytes were used to suppress dendritic growth, the corrosion of zinc anode and current collectors still depressed the cycling stability. Herein, we introduce recent studies on electrolytes for aqueous zinc ion battery revealing their principles, working mechanism and research goals.