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Native API 빈도 기반의 퍼지 군집화를 이용한 악성코드 재그룹화 기법연구
권오철,배성재,조재익,문종섭 한국정보보호학회 2008 정보보호학회논문지 Vol.18 No.6
The Native API is a system call which can only be accessed with the authentication of the administrator. It can be used to detect a variety of malicious codes which can only be executed with the administrator's authority. Therefore, much research is being done on detection methods using the characteristics of the Native API. Most of these researches are being done by using supervised learning methods of machine learning. However, the classification standards of Anti-Virus companies do not reflect the characteristics of the Native API. As a result the population data used in the supervised learning methods are not accurate. Therefore, more research is needed on the topic of classification standards using the Native API for detection. This paper proposes a method for re-grouping malicious codes using fuzzy clustering methods with the Native API standard. The accuracy of the proposed re-grouping method uses machine learning to compare detection rates with previous classifying methods for evaluation. Native API(Application Programming Interfaces)는 관리자 권한에서 수행되는 system call의 일종으로 관리자 권한을 획득하여 공격하는 다양한 종류의 악성코드를 탐지하는데 사용된다. 이에 따라 Native API의 특징을 기반으로한 탐지방법들이 제안되고 있으며 다수의 탐지방법이 교사학습(supervised learning) 방법의 기계학습(machine learning)을 사용하고 있다. 하지만 Anti-Virus 업체의 분류기준은 Native API의 특징점을 반영하지 않았기 때문에 교사학습을 이용한 탐지에 적합한 학습집합을 제공하지 못한다. 따라서 Native API를 이용한 탐지에 적합한 분류기준에 대한 연구가 필요하다. 본 논문에서는 정량적으로 악성코드를 분류하기 위해 Native API를 기준으로 악성코드를 퍼지 군집화하여 재그룹화하는 방법을 제시한다. 제시하는 재그룹화 방법의 적합성은 기계학습을 이용한 탐지성능의 차이를 기존 분류방법을 결과와 비교하여 검증한다.
고압 킬레이트 흡수반응에 의한 음식물폐기물 혐기소화가스 중 황화수소의 제거와 경제성 평가
권오철,박영규 한국폐기물자원순환학회 2016 한국폐기물자원순환학회지 Vol.33 No.8
Biogas has been used to remove water content and hydrogen sulfide (H2S). Removing water requires a low temperature process; thus, our study investigated removing H2S under high pressure and low temperature. Several experiments were conducted to investigate removal of H2S from a biogas stream by optimizing chemical absorption and the chemical reaction with a Fe/EDTA solution. The roles of Fe/EDTA were studied to enhance removal efficiency of H2S due to oxidization by Fe+3/EDTA. The objective of this study was to explore the feasibility of enhancing toxic gas treatment in a biogas facility. A biogas purification strategy affords many advantages. For example, the process can be performed under mild environmental conditions and at low temperature, and it removes H2S selectively. As the Fe-EDTA concentration increased, the H2S conversion rate increased because the Fe-EDTA complex was highly stable. The optimal pH to stabilize the chemical complex during oxidation of H2S was 9.0.
권오철 한국지방행정연구원 1995 地方行政硏究 Vol.9 No.4
This paper attempts to review privatization and quality management of public service to which we had little attention. The first part suggests the concepts and the four elements of quality management of public service. The second part relates to the discussions underlying the relations between privatization and quality management of public service. In the third part of the paper three suggestions for quality management of public service are made as follows 1. Choice among competing service provider for quality improvement; 2. Enhancing input and feedback to public managers by public participation in delivering public services ; 3. Change of paradigms in bureaucratic behaviors, organizations, and functions in public administration. Finally, it is emphasized that quality management doesn't exclude quantity management, but is based upon it.
DMAIC방법론을 활용한 건설기술정보시스템 활용도 제고방안에 관한 연구
권오철 한국건축시공학회 2010 한국건축시공학회지 Vol.10 No.1
The purpose of this study was to present the 6 sigma technique in construction projects, and to review the possibility of 6 sigma introduction. DMAIC (Design, Measure, Analyze, Improve, Control) methodology was used to increase the utilization of TIMS (Technology Information Management System). The results of this study were as follows. The introduction of the 6 sigma technique was very effective in the construction industry, but there were many difficulties in its application because of the characteristics of construction. As the 6 sigma technique emphasizes management based on data, it is essential to accumulate historical data and to achieve the standardization of the construction business process. Furthermore, it is necessary to apply 6 sigma for the competitiveness of the construction industry, and the development of suitable 6 sigma methodology for the construction industry is required 본 연구의 목적은 6시그마 경영기법을 적용하여 건설회사의 기술 자료와 정보를 축적, 관리하는 기술정보시스템(TIMS:Technology Information Management System)의 활용 증대방안을 도출하는 것이다. 연구에 적용된 방법론은 6시그마 기법 중 DMAIC방법론을 이용하였다. 연구수행결과 다음과 같은 결론을 얻을 수 있었다. 건설기술정보의 성격을 분석하였으며,기술정보를 관리하는 시스템의 활용율을 증대하기 위해서는 고객만족을 위한 기술정보 활용도 분석에 대한 프로세스가 필요하며, 정기적인 수요조사와 개인별 맞춤정보서비스의 제공, 지속적인 교육과 홍보의 실시, 각종 기술정보의 축적과 분석, 가공을통한 컨텐츠의 확충이 필요하다.