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지하역사 화재발생시 초기대응을 위한 대응매뉴얼에 관한 연구
박명길(Myunggil Park),황현숙(Hyunsuk Hwang),김창수(Changsoo Kim) 한국멀티미디어학회 2008 한국멀티미디어학회 학술발표논문집 Vol.2008 No.1
본 논문에서 언급하는 대응 매뉴얼이란 지하공간 뿐만 아니라 일반 화재와 같은 비상사태 발생 시 초기의 행동요령 및 대처순서와 방법 등을 상세히 기술한 것을 의미하며, 이를 평시에 숙지하고 있어 비상사태 초기에 올바른 대처를 통해 사고를 진압하고 인명과 재산피해를 최소화하는데 목적을 두고 있다. 매뉴얼은 기존의 사고ㆍ사례들을 비추어 볼 때 없어서는 안 되는 중요한 방재수단 중의 하나이며, 올바른 매뉴얼의 작성은 무엇보다 중요하다. 본 논문에서는 지하역사에서 화재발생시 신속한 대응을 위한 매뉴얼 개발에 대한 연구를 목표로 한다. 기존에 제시된 대응매뉴얼이 많이 존재 하지만 이는 화재발생시 현장에서 초기대응을 위해 바로 적용하기에는 무리가 따른다. 그러므로 기존의 대응매뉴얼을 분석하여 문제점을 도출하고, 이를 개선하여 지하역사에서 화재 발생 시 초기에 올바르게 대응할 수 있는 매뉴얼을 제안한다.
Design of the Ontology Based Retrieval Engine for Managing the Public Control Points
Seonghyun Shin,Yulan Cui,Myunggil Park,Hyunsuk Hwang,Yongcheol Suh,Changsoo Kim 한국멀티미디어학회 2008 한국멀티미디어학회 국제학술대회 Vol.2008 No.-
The spatial information is being more widely used with the development of ubiquitous society and the effective management of control points which are basis of the spatial information is required. The existing management system supports key words and categorized search. However, the ontology-based retrieval system is not only dealing with complex queries but also increasing effective business and convenience. Therefore, this paper proposes the design of the ontology-based retrieval engine including the function of intelligent and personalized search. Our searching engine is able to be applied to current management systems of control points and PDA and Web-based information systems related with control points.
Electrical Characteristics of the Backgated Bottom-Up Silicon Nanowire FETs
DukSoo Kim,YoungChai Jung,MiYoung Park,ByungSung Kim,SuHeon Hong,MinSu Choi,MyungGil Kang,YunSeop Yu,Dongmok Whang,SungWoo Hwang IEEE 2008 IEEE TRANSACTIONS ON NANOTECHNOLOGY Vol.7 No.6
<P>We report the electrical characteristics of backgated silicon nanowire (SiNW) FETs at temperatures ranging from 300 to 160 K. The voltage drop along the intrinsic part of the silicon nanowire (SiNW) was obtained by modeling the source/drain contacts as Schottky diodes. The field effect mobility values obtained from the extracted intrinsic voltage drop showed activation behaviors in the given temperature range. The activation energy was smaller than that of previously reported Ge nanowires.</P>
Hwang, Insik,Kim, Jaehyun,Lee, Minkyung,Lee, Min-Wook,Kim, Hee-Joong,Kwon, Hyuck-In,Hwang, Do Kyung,Kim, Myunggil,Yoon, Haeyoung,Kim, Yong-Hoon,Park, Sung Kyu The Royal Society of Chemistry 2017 Nanoscale Vol.9 No.43
<P>Purified semiconducting single-walled carbon nanotubes (sc-SWCNTs) have been researched for optoelectronic applications due to their high absorption coefficient from the visible to even the near-infrared (NIR) region. Nevertheless, the insufficient electrical characteristics and incompatibility with conventional CMOS processing have limited their wide utilization in this emerging field. Here, we demonstrate highly detective and wide spectral/dynamic range phototransistors incorporating floated heterojunction active layers which are composed of low-temperature sol-gel processed n-type amorphous indium gallium zinc oxide (a-IGZO) stacked with a purified p-type sc-SWCNT layer. To achieve a high and broad spectral/dynamic range photo-response of the heterogeneous transistors, photochemically functionalized sc-SWCNT layers were carefully implemented onto the a-IGZO channel area with a floating p-n heterojunction active layer, resulting in the suppression of parasitic charge leakage and good bias driven opto-electrical properties. The highest photosensitivity (<I>R</I>) of 9.6 × 10<SUP>2</SUP>A W<SUP>−1</SUP>and a photodetectivity (<I>D</I>*) of 4 × 10<SUP>14</SUP>Jones along with a dynamic range of 100-180 dB were achieved for our phototransistor in the spectral range of 400-780 nm including continuous and minimal frequency independent behaviors. More importantly, to demonstrate the diverse application of the ultra-flexible hybrid photosensor platform as skin compatible electronics, the sc-SWCNT/a-IGZO phototransistors were fabricated on an ultra-thin (∼1 μm) polyimide film along with a severe static and dynamic electro-mechanical test. The skin-like phototransistors showed excellent mechanical stability such as sustainable good electrical performance and high photosensitivity in a wide dynamic range without any visible cracks or damage and little noise interference after being rolled-up on the 150 μm-thick optical fiber as well as more than 1000 times cycling.</P>