• 디지털산업정보학회논문지
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• 제16권1호
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• pp.79-92
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• 2020

As the number of systems increases and the network size increases, automated attack prediction systems are urgently needed to respond to cyber attacks. In this study, we developed four types of information gathering sensors for collecting asset and vulnerability information, and developed technology to automatically generate attack graphs and predict attack targets. To improve performance, the attack graph generation method is divided into the reachability calculation process and the vulnerability assignment process. It always keeps up to date by starting calculations whenever asset and vulnerability information changes. In order to improve the accuracy of the attack target prediction, the degree of asset risk and the degree of asset reference are reflected. We refer to CVSS(Common Vulnerability Scoring System) for asset risk, and Google's PageRank algorithm for asset reference. The results of attack target prediction is displayed on the web screen and CyCOP(Cyber Common Operation Picture) to help both analysts and decision makers.

• 한국인터넷방송통신학회논문지
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• 제21권1호
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• pp.19-26
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• 2021

본 연구의 목적은 가상자산 산업의 발달을 지원할 수 있는 환경 제공을 위한 것으로 현재 가상자산 산업이 보유하고 있는 한계요인과 대응방안을 법 및 제도적 측면, 기술적 측면, 시장적 측면으로 고찰하였다. 현재 시행되고 있는 법 기준으로 가상자산 사업자로 분류된 소규모 기업들은 정부가 요구하는 사업을 운영 하기 이한 요건을 충족하기 어렵다. 이로 인해 자금과 인력이 준비되지 않은 중소기업은 시장에서 물러나고 자본력 있는 대규모 기업만이 살아남는 환경이 조성되어 가상자산기술 산업분야에서 바람직한 기술과 시장의 발달이 기대되기 어렵다. 또한, 중소규모 기업이 시장에서 퇴출 됨으로써 현재 사용자들의 피해가 등장할 수 있다. 따라서 법 및 제도적 측면은 가상자산사업자의 정확한 범위 부재가 존재하여 가상자산사업자의 사업운영 요건에 대한 논쟁적 요소에 대한 대응이 필요하다. 기술적 측면에서 P2P방식 활용에 따른 속도 저하, 에러복구의 어려움, 운용 전문인력의 부재에 대응하기 위해 기술 표준화 및 안정화가 요구되고 이를 지원할 수 있는 운용 전문기술인력의 양성을 위한 노력을 해야 한다. 시장적 측면에서 이용자 보호 취약, AML 방식 적용 미비, 세제 적용 한계에 대해 가상자산 이용자 보호 방안 마련과 가상자산 운영기업에 대응방안 수립이 필요하다. 본 연구는 가상자산 산업분야에 적극적 활용 지원 뿐만 아니라 이와 관련된 정책을 수립하는 것에 기여할 것으로 기대된다.

• 한국IT서비스학회지
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• 제23권1호
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• pp.1-10
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• 2024

The IT environment is changing due to the acceleration of digital transformation in enterprises and organizations. This expansion of the digital space makes centralized cybersecurity controls more difficult. For this reason, cyberattacks are increasing in frequency and severity and are becoming more sophisticated, such as ransomware and digital supply chain attacks. Even in large organizations with numerous security personnel and systems, security incidents continue to occur due to unmanaged and unknown threats and vulnerabilities to IT assets. It's time to move beyond the current focus on detecting and responding to security threats to managing the full range of cyber risks. This requires the implementation of asset Inventory for comprehensive management by collecting and integrating all IT assets of the enterprise and organization in a wide range. IT Asset Management(ITAM) systems exist to identify and manage various assets from a financial and administrative perspective. However, the asset information managed in this way is not complete, and there are problems with duplication of data. Also, it is insufficient to update of data-set, including Network Infrastructure, Active Directory, Virtualization Management, and Cloud Platforms. In this study, we, the researcher group propose a new framework for automated 'Comprehensive IT Asset Management(CITAM)' required for security operations by designing a process to automatically collect asset data-set. Such as the Hostname, IP, MAC address, Serial, OS, installed software information, last seen time, those are already distributed and stored in operating IT security systems. CITAM framwork could classify them into unique device units through analysis processes in term of aggregation, normalization, deduplication, validation, and integration.

• 한국터널지하공간학회 논문집
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• 제16권6호
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• pp.615-625
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• 2014

산악지형이 많은 우리나라는 1970년대 이후 급속한 경제발전과 함께 수많은 터널이 건설되어 왔으나 터널의 필요성에 대한 인식에 비해 터널의 유지관리에 대한 관심은 부족한 상태이다. 국내 터널의 유지관리체계는 점검 후 이상이 발견 되었을 때 대처하는 대응적 유지관리 체계로서, 앞으로 노후화 터널이 급격히 증가하면서 각 기관들의 제한된 예산의 범위와 인력으로는 일일이 대응하기 어려워질 것이다. 따라서 본 연구에서는 터널의 유지관리를 전략적이고 장기적인 관점에서의 예방적인 관리 체계로 변환시키기 위한 LCCA(Life Cycle Cost Analysis)기반 터널 자산관리 시스템의 필요성과 개발방향에 대한 프레임웍을 제시하고자 한다. 국외 선진국의 사회기반시설물에 대한 자산관리 수행사례를 살펴보고 국내 터널관리에서의 자산관리기법의 필요성을 분석하였다. 또한, 터널 자산관리에서 경제적, 공학적의 정량적 의사결정 기법인 LCCA 모델을 적용하여 자산관리모델이 개발되기 위한 구체적인 발전방향을 제시하고 이를 시스템화하기 위한 연구개발 프레임웍을 설계하였다.

• 한국IT서비스학회지
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• 제5권2호
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• pp.155-168
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• 2006

Software product line is a software product or a set of software system, which has common functions. We can develop a specific software product, which satisfies requirements of a particular market segment and a mission in a specific domain by reusing the core asset such as the developed software architecture through the software product line. Software development methodology based on the software product line can develop a software more easily and fast by reusing the developed software core asset. Developed countries of software technology select software product line as a core field of software production technology, and support technology development. In case of USA, CMU/SEI(Carnegie Mellon University/Software Engineering Institute) developed product-line framework 4.0 together with the industry and the Department of Defense. Europe is supporting the development of product line technology through ITEA(IT for European Advancement) program. However, industries in our country understand the necessity of software production technology based on product line concept for the purpose of increasing productivity, it is not sufficient to invest for this technology development. In this paper, we aim to construct the common architecture of software product line for production of the software product line.

• 한국경영과학회지
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• 제14권1호
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• pp.59-71
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• 1989

This practical paper puts existing optimal stopping rules for various asset selling situations into a coherent perspective, using simple non-measure theoretical terms. It also provides analytical or numerical solutions when the price offers are beta distributed.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1324-1327
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• 2009

Social infrastructure is the basis of public welfare and should be recognized and managed as important assets. Bridge is one of the most important infrastructures to be managed systematically because the impact of the failure is critical. It is essential to monitor the performance of bridges in order to manage them as an asset. But current analytical methods such as predictive modeling and structural analysis are very complicated and difficult to use in practice. To apply these methods, structural and material condition data collection should be performed in each element of bridge. But it is difficult to collect these detailed data in large numbers and various kinds of bridges. Therefore, it is necessary to collect data of major measurement items and predict the life of bridges roughly with advanced information technologies. When certain measurement items reach predefined limits in the monitoring bridges, precise performance measurement will be done by detailed site measurement. This paper describes the selection of major measurement items that can represent the tendency of bridge life and introduces automated bridge data collection test-bed using wireless sensor network technology. The following will be major parts of this paper: 1) Examining the features of conventional bridge management system and data collection method 2) Mileage concept as a bridge life indicator and measuring method of the indicator 3) Test-bed of automated and real-time based bridge life indicator monitoring system using wireless sensor network

• 대한수학회지
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• 제43권4호
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• pp.845-858
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• 2006

We present two approaches of the stochastic interest rate European option pricing model. One is a bond numeraire approach which is applicable to a nonzero value asset. In this approach, we assume log-normality of returns of the asset normalized by a bond whose maturity is the same as the expiration date of an option instead that of an asset itself. Another one is the expectation hypothesis approach for value zero asset which has futures-style margining. Bond numeraire approach allows us to calculate volatilities implied in options even though stochastic interest rate is considered.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2005년도 종합학술대회
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• pp.78-84
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• 2005

As the research activities related to 'Ubiquitous Computing' whose concept was introduced by Mark Weiser are growing, RFID(Radio Frequency Identification) technology has recently gained attention as a technology to advance the ubiquitous computing and a lot of related researches are also in progress. Research works done so far are mainly linked to the situation that the research outputs apply to meet the requirements for asset tracking and data sharing with partners over supply chain by using fixed RFID readers. However, it is essential that users have access to real-time information about the tagged objects and services whenever and wherever they want in the era of ubiquitous computing, so mobile devices-including PDA, smart phone, cellular phone, etc - which are equipped with an RFID reader can be regarded as an essential terminal for users living in ubiquitous computing environment. As far as the application with mobile devices are concerned, there are many considerations due to their limited capabilities of data processing, battery consumption and so on. In this paper, we review the generic RFID network model and introduce the revised RFID network model in consideration of incorporation with mobile devices equipped with an RFID reader. Also, we derive the requirements for software embedded within an RFID- enabled mobile terminal and then discuss essential components for implementation. Moreover, we develop the applications for asset management at museum by using mobile RFID network model.

• 문화기술의 융합
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• 제4권3호
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• pp.99-104
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• 2018

문화유산 산업은 한나라의 흥망성쇠에 결정적 영향을 미친다. 본 연구에서 문화유산 산업에 대한 선진국의 여러 가지 정책과 제도를 소개한다. 이를 통해 나라의 상황에 맞게 고쳐 나아가, 문화유산 산업 발전 관련 정책을 제시한다. 특히 '젊우미'라는 제도를 제안해, 청년취업과 문화유산 산업 증진의 두 가지 발전을 위한 정책을 위해 문화재 보존 인력양성, 문화재의 디지털 데이터베이스화 와 문화재 스토리 발굴을 제안한다.