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X-means 클러스터링을 이용한 악성 트래픽 탐지 방법
한명지(Myoungji Han),임지혁(Jihyuk Lim),최준용(Junyong Choi),김현준(Hyunjoon Kim),서정주(Jungjoo Seo),유철(Cheol Yu),김성렬(Sung-Ryul Kim),박근수(Kunsoo Park) 한국정보과학회 2014 정보과학회논문지 Vol.41 No.9
악성 트래픽은 디도스 공격, 봇넷 통신 등의 인터넷 망을 교란시키거나 특정 네트워크, 서버, 혹은 호스트에 피해를 끼칠 의도를 가지고 발생시키는 트래픽을 지칭한다. 이와 같은 악성 트래픽은 인터넷이 발생한 이래 꾸준히 양과 질에서 진화하고 있고 이에 대한 대응 연구도 계속되고 있다. 이 논문에서는 악성 트래픽을 기존 X-means 클러스터링 알고리즘을 적용하여 효과적으로 탐지하는 방법을 제시하였다. 특히 악성 트래픽의 통계적 특징을 분석하고 클러스터링을 위한 메트릭을 정의하는 방법을 체계적으로 제시하였다. 또한 두 개의 공개된 트래픽 데이터에 대한 실험을 통해 실효성을 검증하였다. Malicious traffic, such as DDoS attack and botnet communications, refers to traffic that is generated for the purpose of disturbing internet networks or harming certain networks, servers, or hosts. As malicious traffic has been constantly evolving in terms of both quality and quantity, there have been many researches fighting against it. In this paper, we propose an effective malicious traffic detection method that exploits the X-means clustering algorithm. We also suggest how to analyze statistical characteristics of malicious traffic and to define metrics that are used when clustering. Finally, we verify effectiveness of our method by experiments with two released traffic data.
홈 네트워크 기기들의 상호 연동을 지원하는 규칙 기반 지능형 시스템 구조
이승륜(Seungryun Lee),강순주(Soonju Kang),최준용(Junyong Choi) 한국지능시스템학회 2005 한국지능시스템학회 학술발표 논문집 Vol.15 No.1
홈 네트워크는 다양한 특성과 기능을 지닌 기기들로 구성된 전형적인 유비쿼터스 시스템이다. 그러나, 현재 홈 네트워크 환경에서 각 기기들은 대부분 독립적인 서비스를 제공하며, 기기들의 상호 연동을 지원하는 지능적인 서비스는 미비하다. 이와 관련하여 본 논문에서는 사용자가 손쉽게 홈 네트워크 상의 다양한 기기들의 상태를 파악하고 상호 연동이 가능한 제어 기능을 제공하는 지능형 시스템을 제안하고자 한다. 본 논문에서 제안하는 시스템은 크게 각 기기들의 고유 정보, 응용 분야에 적합한 서비스를 제공하는 규칙 기반 엔진, 사용자 인터페이스 부분으로 구성되어 있다. 다양한 기기들의 복잡한 제어를 규칙 기반 엔진이 담당함으로써 사용자는 단순한 명령만으로 정의된 규칙을 이용하여 홈 네트워크 기기들을 효율적으로 제어할 수 있다.
박지은(Park jieun),오달석(Oh dalseok),최준용(Choi Junyong),정소영(Jung soyoung),김애란(Kim aeran),구창모(Koo changmo),정희정(Jung heejung),최선미(Choi sunmi) 한국한의학연구원 2007 한국한의학연구원논문집 Vol.13 No.3
Objective : To investigate documented surveys about adverse events of acupuncture therapy. Methods : We searched Medline with the terms of 'acupuncture/adverse event(s)', 'acupuncture/side effect(s)' and 'CAM/adverse event(s)' using Pubmed and set the limits to human study. Results : There were 5 prospective studies, 3 reviews and 3 surveys in our searching. There were 3 reports about acupuncture related adverse events in UK ranging from 10.7% to 15% of which the rate of significant events were from 0.13% to 0.14%. In Germany, there were 11% of acupuncture related adverse events in one report and 7.5%(significant events were 45 in 190.924 patients) in another report. In Australia, one study reported that every adverse event associated with acupuncture occurred in 8-9 month per one practitioner. In Japan. 0.14% of acupuncture related adverse events in 48 practitioners were reported in one systemic review. A cumulative review about significant adverse events associated with acupuncture reported 715 adverse events of which most frequent accidents were pneumothorax and central nervous system injury. Conclusion : The risk of adverse event associated with acupuncture is far lower than that associated with other general medical interventions. However, some safety guidelines about the acupuncture performance are needed.
박지은(Park jieun),오달석(Oh dalseok),신선화(Shin seonhwa),최준용(Choi junyong),구창모(Koo changmo),김애란(Kim aeran),정소영(Jung soyoung),한경주(Han Kyungju),최선미(Choi sun-mi) 한국한의학연구원 2007 한국한의학연구원논문집 Vol.13 No.2
Objective : This study was aimed to review the trend of clinical research articles of acupuncture and moxibustion from the year of 1995 to 2006. Methods : The retrieving and analyzing period were from January 1995 to July 2006. Articles were collected by retrieving Pubmed database. Search terms were as follows; "Acupuncture", "Acupuncture & Meridian", "Moxibustion". After reviewing articles by our pre-defined criteria, Correlation was assessed qualitatively between contents of the final selected articles and those of Korea Institute of Oriental Medicine. Results : The number of acupuncture research articles have increased with higher rate since the year of 2000. In the field of medical devices, the articles were sparsely existed. The percentage of clinical acupuncture research articles was 75%. However, in the category of Korean investigators' researches, it was 46%. Publications by Korean investigators were concentrated to several specific journals of which their impact factor were below 1 point. Conclusion : There needs more qualifying studies in acupuncture studies which are represented by impact factor in Journal Citation Reports. It is necessary to research and develop the medical devices quantatively rating the outcome of acupuncture trials. The secondary research, such as, systematic reviews, meta-analysis, would be a key approach to evaluate the effectiveness and safety of acupuncture treatments. Moxibustion research would be noticeable in regard to its historical effectiveness and its variable indications.