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조성민,성민기,Jo, Seongmin,Sung, Minki 한국의료복지시설학회 2018 의료·복지 건축 Vol.24 No.2
Purpose: The outbreak of Middle East Respiratory Syndrome(MERS) in KOREA has brought up the demands for ventilation guideline and regulations for healthcare facilities since most of the infection was spreaded inside healthcare facility. Currently KOREA has no ventilation guideline or regulations covering entire section of healthcare facility. The purpose of this study is to investigate current ventilation methods in KOREA healthcare facilities to in future, propose ventilation guideline. Methods: Research of foreign counties ventilation guideline and regulation for healthcare facilities were conducted for reference. Field investigation with survey of 21 healthcare were conducted to identify the ventilation system and operating methods. Additionally survey for healthcare workers were conducted to observe the recognition related to ventilation system in healthcare facility. Results: The result showed that most of foreign countries ventilation guideline and regulation suggests similar items to reduce the spread of infection and maintain good indoor air quality. The investigation results indicated that fixed guideline for ventilation in healthcare facility were required due to different ventilation operating methods. Survey result of healthcare workers has told us that ventilation guideline and regulation is needed to prevent further infection. Implications: Absence of ventilation guideline and regulations for healthcare facility in KOREA is an urgent issue.
지연시간 효율 개선을 위한 On-Chip Network 구조 설계 및 구현
조성민(Seongmin Jo),조한욱(Han Wook Cho),하진석(Jin Seok Ha),송용호(Yong Ho Song) 大韓電子工學會 2009 電子工學會論文誌-SD (Semiconductor and devices) Vol.46 No.11
최근 SoC의 집적도가 증가함에 따라 칩 내부의 통신 효율성은 시스템 성능에 직접적인 영향을 미치고 있다. 이에 따라 칩내부의 통신 메커니즘은 과거 shared wire를 이용한 버스 시스템에서 라우터를 기반으로 하는 NoC로 진화하고 있다. 하지만, NoC 내부의 라우터는 컨트롤 로직이 복잡해짐에 따라 신호 전달 과정에서 지연시간을 증가시켜 NoC의 성능을 제한시킨다. 따라서 본 논문에서는 이러한 지연시간을 개선시키기 위하여 낮은 복잡도를 갖는 라우터를 제시한다. 제안한 라우터의 구조 검증 및 성능 평가를 위하여 ESL 기법의 시뮬레이션 플랫폼을 구축하였다. 본 논문에서 제안한 NoC 구조는 기존의 VC 라우터 기반의 NoC에 비해 대역폭은 약 1-2% 정도 감소하였지만, 평균적으로 약 50%의 지연시간이 감소 효과를 보였다. As increasing the number of IPs integrated in a single chip and requiring high communication bandwidth on a chip, the trend of SoC communication architecture is changed from bus- or crossbar-based architecture to packet switched network architecture, NoC. However, highly complex control logics in routers require multiple cycles to switch packet. In this paper, we design low complex router to improve the communication latency. Our NoC design is verified by simulation platform modeled by ESL tool, SoC Designer. We also evaluate our NoC design comparing to the previous NoC architecture based on VC router. Our results show that our NoC architecture has less communication latency, even small throughput degradation (about 1-2%).