• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.928-931
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• 2002

Network based intrusion detection system is a computer network security tool. In this paper, we present an intrusion detection system based on Self-Organizing Maps (SOM) and Resilient Propagation Neural Network (RPROP) for visualizing and classifying intrusion and normal patterns. We introduce a cluster matching equation for finding principal associated components in component planes. We apply data from The Third International Knowledge Discovery and Data Mining Tools Competition (KDD cup'99) for training and testing our prototype. From our experimental results with different network data, our scheme archives more than 90 percent detection rate, and less than 5 percent false alarm rate in one SYN flooding and two port scanning attack types.

• 한국시뮬레이션학회논문지
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• 제14권1호
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• pp.9-18
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• 2005

Attempts to attack hosts in the network have become diverse, due to crackers developments of new creative attacking methods. Under these circumstances the role of intrusion detection system as a security system component gets considerably importance. Therefore, in this paper, we have suggested multiple intrusion detection system based on the contract net protocol which provides the communication among multiple agents. In this architecture, fuzzy rule based system has been applied for agent selection among agents competing for being activated. The simulation models are designed and implemented based on DEVS formalism which is theoretically well grounded means of expressing discrete event simulation models.

• Journal of applied mathematics & informatics
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• 제30권5_6호
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• pp.847-864
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• 2012

In recent years, using computer networks (wired and wireless networks) has been widespread in many applications. As computer networks become increasingly complex, the accompanied potential threats also grow to be more sophisticated and as such security has become one of the major concerns in them. Prevention methods alone are not sufficient to make them secure; therefore, detection should be added as another defense before an attacker can breach the system. Intrusion Detection Systems (IDSs) have become a key component in ensuring systems and networks security. An IDS monitors network activities in order to detect malicious actions performed by intruders and then initiate the appropriate countermeasures. In this paper, we present a survey and taxonomy of intrusion detection systems and then evaluate and compare them.

• 한국IT서비스학회지
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• 제3권2호
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• pp.85-98
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• 2004

As the e-Commerce based on the XML technology is getting bigger, user authentication, integrity, non-repudiation and confidentiality has become important for security. Since the XML technology is widely used for exchanging information among the Internet e-business systems, the security of XML documents is essentially required and XML digital signature should be supported. To support the digital signature of XML documents, W3C proposed the XML-Signature specification as an international standard that describes five transform algorithms. In this paper, we design and implement a XML/PKI based digital tax invoice system. Our system supports the five transforming algorithms defined in the XML-Signature specification and exchanges digital tax invoices among enterprises securely. We design and implement the flexible and efficient system consists of reusable components using CBD(Component Based Development).

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2002년도 추계학술대회
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• pp.439-443
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• 2002

인터넷, 특히 웹의 확산으로 네트워크 기반의 분산 환경은 응용의 표준 아키텍쳐로 인식 되고 있다. 따라서 네트워크의 효율성과 최상의 서비스 제어, 공유를 위해 복잡한 네트워크 구성 자원들을 관리하는 네트워크 관리 시스템은 응용의 표준 하부 지원 시스템으로서 뿐 아니라 독립적인 상업용 응용으로서 수요와 기대가 점차 증가하고 있다. 또한 소프트웨어 개발 방법 측면에서는 패턴과 컴퍼넌트에 의한 조립, 확장을 중심으로 하는 소프트웨어 재사용이 소프트웨어 생산의 기대치를 현실화할 수 있는 최상의 접근 방법으로 인정된다. 따라서 본 논문에서는 망관리 시스템 구축을 위한 컴포넌트 개발을 위해 선행 작업으로 해당 도메인에서 재사용 가능한 컴포넌트들을 식별, 분류하는 컴포넌트 아키텍처를 정의하고 범주화한다. 또한 재사용 컴포넌트의 개발과 유통, 사용을 위한 컴포넌트 관리를 적절하게 제공하기 위해 메타 정보를 기반으로 한 컴포넌트 형상관리 요소들을 제시한다. 망관리를 위한 컴포넌트의 식별, 설계와 형상관리 기법들은 이들 컴포넌트들을 CBD 프로세스에 의해 망관리 시스템에 실질적으로 적용함으로써 응용의 개발과 운용에 있어서 생산성 및 품질 향상으로 기대될 것이다.

• Structural Engineering and Mechanics
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• 제32권2호
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• pp.321-335
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• 2009

When a roof frame is subjected to the airblast loading, the conventional way to analyze the damage of the frame or design the frame is to use single degree of freedom (SDOF) model. Although a roof frame consists of beams and girders, a typical SDOF analysis can be conducted only separately for each component. Thus, the rigid body motion of beams by deflections of supporting girders can not be easily considered. Neglecting the beam-girder interaction in the SDOF analysis may cause serious inaccuracies in the response values in both Pressure-Impulse curve (P-I) and Charge Weight-Standoff Diagrams (CWSD). In this paper, an inelastic two degrees of freedom (TDOF) model is developed, based on force equilibrium equations, to consider beam-girder interaction, and to assess if the modified SDOF analysis can be a reasonable design approach.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2002년도 춘계학술발표논문집 (하)
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• pp.821-824
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• 2002

과거의 프로그램은 단일 프로그램으로 작성될 경우, 작성하기도 어렵고 관리 또한 용이하지가 않았다. 결국, 오늘날에는 이를 해결하고자 큰 프로그램을 작고 이해하기 쉬운 분산 컴포넌트별로 나누는 방식을 활용하고 있다. 하지만, 이러한 분산 컴포넌트 기반 소프트웨어는 보안 측면에서 볼 때 상당히 위험한 요소들을 내포하고 있다. 즉, 외부나 내부에서 독립적으로 링크되는 개개의 컴포넌트들이 보안을 고려한 모든 상황에서 안전하게 이용된다는 보장이 없다. 본 논문에서 제안하는 시스템은 바로 이러한 점을 해결하고자 운영 체제에 보안 모듈을 내장하고 이 보안 모듈로 하여금 개개의 컴포넌트가 링크될 때에 그 안전성을 검증하고 혹시 있을지 모를 불법적인 컴포넌트 조작을 사전에 막을 수 있도록 설계하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1151-1156
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• 2008

본 논문에서는 복잡한 환경을 감시해야 하는 도시철도 서비스 구간 내 각종 사고를 예방하고, 사고 및 재난 발생 시 신속한 상황파악 및 대처를 통하여 피해를 최소화할 수 있는 능동적인 감시체계로 변환하기 위한 지능화된 종합감시 시스템을 개발하는데 있어, 요구되는 지능형 감시 카메라의 성능 및 관련기술을 분석하였다.

• International Journal of Computer Science & Network Security
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• 제21권8호
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• pp.224-228
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• 2021

The article is devoted to the problems and prospects of integration of informational technologies in the administration of justice as a necessary component of the development of the informational society in Ukraine. In general, informational technologies make it possible to create new forms of organization and interaction of bodies of public authorities with society, to introduce innovative solutions for legal regulation and organization of public relations. More and more services for citizens are moving to electronic format. Judicial reform is aimed at ensuring more comfortable and convenient interaction with the courts. The need for the usage of informational technology in the proceedings is preconditioned by the global informatization of modern society, the development of new forms of interaction in the civil sphere with the usage of electronic means of communication: the global Internet, mobile, and satellite communication systems and more. "Electronic justice" involves the use of information and communication technologies in the implementation of procedural law.

• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.169-172
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• 2021

Based on the scientific and pedagogical analysis of the theory and experience of teaching computer science disciplines, the didactic mechanism for ensuring the continuity of the average (full) general and higher professional education of economists for practical implementation innovative technology of personal experience foundation. The pedagogical conditions for the formation of information competence, including laboratory, design, research work, the use of active teaching methods for acquiring management skills in production and activities of the enterprise. An indispensable requirement for the conditions for the implementation of basic of educational programs is the assessment of competencies. With this the goal was to develop criteria and levels of formation information competence of future economists and carried out complex diagnostics.