http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
네트워크 침입 탐지 시스템을 위한 Aho-Corasick 패턴 매칭 알고리즘 분석 및 멀티 쓰레딩을 활용한 성능 향상
조종길,박희진 한국정보과학회 2011 한국정보과학회 학술발표논문집 Vol.38 No.2A
오픈 소스 기반의 네트워크 침입 탐지 시스템인 Snort에서는 패킷 필터링 알고리즘으로 이용되는 다중 패턴 매칭 알고리즘 Aho-Corasick을 AC, ACF, ACS, ACB, ACSB, AC_BNFA로 지원하고 있다. 이 알고리즘들을 여러 기준으로 분석하여 각 알고리즘이 어떤 상황에서 적합하지를 판단하는데 도움이 되고자 하였다. 또한 이들 중 하나의 방법에 대하여 전처리 과정이 완료된 pattern set을 이용하여 text를 탐색할 때, 멀티 쓰레딩을 활용하여 성능을 향상하였다. Intel에서 제공하는 Cilk Plus와 OpenMP Architecture Review Board(OpenMP ARB)에서 제공하는 OpenMp를 사용하여 멀티 쓰레딩 탐색을 구현하였고 그 결과를 비교해 보았다. 실험용으로 제작된 text와 pattern set을 이용하여 멀티 쓰레딩을 활용하여 탐색하는 것과 기존의 방법 그대로 탐색하는 것을 비교해 본 결과 Thread가 4개 이상으로 넘어가면 기존에 알려진 결과와 같이 약 2배 빠르게 탐색을 수행함을 확인하였다.
길범수(Bum Soo Kil),조종표(Chongpyo Cho),표영덕(Youngdug Pyo),김강출(Gang Chul Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
The Methods of electronic two-wheel vehicle's performance evaluation are driving test in Outdoor roads and using a Chassis Dynamometer. The Chassis Dynamometer simulates the road load of a electronic two-wheel vehicle. And the setting of road load influences in the result of tests using the Chassis Dynamometer. In this paper, we analyzed difference of table method and coasting test that are method of road load's setting which is primary setting values of performance evaluation using the Chassis Dynamometer.
길범수(Bumsoo Kil),김강출(Gangchul Kim),조종표(Chongpyo Cho) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
In case of Two-Wheel Vehicle of Internal combustion engine using gasoline, Electronic Two-Wheel Vehicles have been supplied in downtown causing of noise pollution and emissions. The electric two-wheel vehicles use the electricity occurring in the battery. The performance of Lithium-ion battery we use commonly, were changed by the ambient temperature changes. In this paper, we analyzed th electric two-wheel vehicles’s performance changes by the temperature changes using the chassis dynamometer and the environmental chamber.
조종식,김영곤,이용웅,주종길,서호석,심춘보,신창선 (사)디지털산업정보학회 2010 디지털산업정보학회논문지 Vol.6 No.1
In this paper, we propose a management system for positioning and indicating the surveyed control point using RFID and UMPC. This system is composed of digital control point, management system and application. The digital control point transmits information of the surveyed control point and the management system receives the data from the digital control points and manages the scattered digital control points. The system offers three services for managing the surveyed control point. The first service is control point monitoring service for identifying the change of location, locating the missing control point and the second service is control point search service notifying selected control point to user, and the third service is control point land management service for editing the control point information in the land. Therefore, this system makes it easy for administrators to access the control point information of the scattered surveyed control point through the country and enhances the managing efficiency.
비유황계 부취제를 적용한 LPG연료의 차량 배출가스 특성
이호길(Ho-kil Lee),김용태(Yong-tae Kim),강정호(Jeong-ho Kang),이영재(Young-jae Lee),권오석(Oh-seuk Kwon),조종표(Chong-pyo Cho) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Vehicle exhaust gases has been affected by fuel quality, combustion technology and after-treatment factors. Especially, fuel quality is a very important key to accomplish the high power, high efficiency and low exhaust gases level. In this regard, LPG is more clean and lower carbon fuel than gasoline and diesel. However, because of containing sulfur odorant (EM, ethyl mercaptan) in LPG, LPG fuel has more higher sulfur content than diesel and gasoline. It is well known that SOx produced for a compounds of sulfur by the combustion process. Also, it is caused that air pollution and poison for catalyst by compounds of sulfur. In this study, LPG fuel was added to sulfur-free odorant that it has been composed for Alkyl-Isovalerate, Alkyl-Acrylate and Alkyl-Pyrazine. And this study evaluated for vehicle emissions characteristics for sulfur-free odorant in the CVS 75and NEDC mode.
超音波의 Tip Diffraction 方法을 이용한 缺陷連續監視를 위한 크기 評價
鄭炫圭,趙鍾吉,金炳喆 韓國非破壞檢査學會 1987 한국비파괴검사학회지 Vol.6 No.2
Most of significant defects in the pressure boundaries of nuclear power plant were dispositioned to be monitored periodically every inservice inspection. Due to the difficulty of the defect sizing during operation, it is necessary to develope the continuous flaw monitoring techniques. The Tip Diffraction method, specifically speaking, spot seems to be suitable for flaw monotoring. The optimum conditions of selecting the transducer were 3.5MHz and 45-57 degree according to compatibility with the defect height. The effective calculation of the defect height was to assume the fact that the incident beam is parallel.This method would be supplemented to ASME method about the defect characterization for the surface flaw.