• The KIPS Transactions:PartC
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• v.17C no.5
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• pp.407-414
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• 2010

A condition access system (CAS) refers to a hardware-based system that allows only authenticated users to have access to contents. The CAS has many disadvantages found in that in the replacement of multiple service operator (MSO) a set-top box should be also changed and the smart-card often causes malfunction. To deal with the problems, exchangeable CAS (XCAS) was developed in 2009. However the standards or evaluation schemes for XCAS are absent. Existing evaluation schemes are not appropriate for evaluating XCAS due to the evaluation standard, the evaluation cost and efficiencies. Therefore, a specific scheme that can evaluate the security and suitability of exchangeable conditional access systems has been requested. In this paper, we propose an appropriate evaluation scheme for XCAS. The evaluation scheme includes an evaluation purpose and four components to evaluate the evaluation target, the evaluation process, the evaluation subject, and the evaluation cost involved.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.4
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• pp.27-36
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• 2018

Although the current evaluation system has been revised four times since it was revised in 1996, it is insufficient to utilize it as a basis for predicting the performance degradation from the long-term viewpoint and prioritization decision for the budget input due to the evaluation system limited to securing the structural safety. Therefore, this study proposes a new evaluation system suitable for the performance evaluation of conventional (ASSM) tunnels among the various types of existing road tunnels using Delphi technique and AHP technique. Since the existing evaluation systems and evaluation items in domestic and overseas are limited in scope of evaluation criteria, the survey was conducted in conjunction with closed questionnaires on existing items and open questionnaires for eliciting new items. The validity of the questionnaire results were verified and the performance evaluation factors suitable for conventional (ASSM) tunnels were derived. After calculating weighted value of the derived evaluation item using AHP technique, a new evaluation system is proposed to meet the characteristics of the ASSM tunnel, so that they can be used as reference materials for revising and supplementing detailed guidelines of performance evaluation in the future.

• Proceedings of the CALSEC Conference
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• 2000.08a
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• pp.235-243
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• 2000

급속한 정보화의 사회적 확대는 정보화가 기업의 성패를 좌우하는 중요요소가 되었다. 이로 인해 효율적 정보화를 위한 정보화전략계획의 중요성은 증대되고 있다. 그러나, 많은 기업들이 정보화전략계획의 실제 수립과 적용 과정에서 많은 어려움을 겪고 있다. 이는 정보전략계획평가를 통한 계획의 내실성확보가 학계는 물론 실제 기업에서도 주요관심사가 되고 있다. 본 연구는 이러한 필요성에 평가영역을 정보화전략계획 평가와 정보화지원평가의 2개 영역으로 가지는 정보화전략계획 평가체계를 개발하였다. 정보전략계획평가는 정보화전략계획 자체의 완결성을 확보하고 문제점을 최소화하는 역할을 수행하게 된다. 더불어 정보화지원 평가를 통해서 기업이 가지고 있는 정보화에 대한 역량과 환경을 평가 및 분석할 수 있다. 본 평가체계를 17개 공기업의 정보화전략계획평가에 실제 적용하여 각 기업에게 검토의견서를 제공하였다. 이를 통해 평가 체계의 실무 적용 가능성을 확인할 수 있었다.

• Defense and Technology
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• no.3 s.157
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• pp.42-47
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• 1992

시험평가는 완성된 무기체계에 대한 시험평가에 그치지 않고 개발초기부터 개입하여, 작전배치후 상당기간 운영단계까지 지속되므로 무기체계 연구개발의 각 단계와 밀접한 관련을 갖고 있다. 필자는 시험평가기술을 갖추고자 하는 국내요구의 일환으로 최근 미 공군의 운용시험평가사령부에서 연수를 받았으며, 실제 시험평가를 수행하는 예하부대를 방문하여 각종 무기체계 시험평가팀과 면담을한 바도 있어 이를 바탕으로 미 공군의 시험평가 조직 및 세부기능에 대한 소개를 하고자 한다

• Journal of the Korea Society for Simulation
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• v.23 no.4
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• pp.211-218
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• 2014

The Test and Evaluation (T&E) system became more important due to its advancement and complexity of the weapon system. Time and cost saving T&E related studies are in progress mainly with advanced countries. By utilizing the Modeling and Simulation (M&S) technology recently, we may save time and money. Also, overcome security and safety limitations. There are many M&S based research activities in South Korea but it is way behind of the system that some countries already have developed. i.e.; United States. This area of study requires new way of developing strategies in the T&E system of Korea. This study is to design the Operational T&E system for weapon systems based on modeling of processes. And we modeled the processes of operational performance evaluation through utilizing resources and performance modules of weapon systems and combined it with the simulation engine for 3D visualization. Through this, we propose the Operational T&E system for weapon systems based on modeling of processes that represent operational performances visually.

• Journal of Korean Society for Geospatial Information Science
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• v.12 no.3 s.30
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• pp.33-41
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• 2004

Land Suitability Assessment System(LSAS) that was introduced to prevent unplanned development of the nation is divided by Assessment System I and II. Assessment System II can regulate the land use on the development that was defined in the 'National Land Planning and Use Act'. With it, Property right can be limited in the development of private sector and this lure the investor to fabricate the result of land suitability assessment. Because of it, if we can't prepare the overview standard, we couldn't accomplish our purpose that unplanned development prevention and efficient land use. With the suggestion of overview standard for the each factor used in LSAS and the analysis result of it, we presented ways to efficient support and the fixations of LSAS.

• Journal of Information Technology and Architecture
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• v.9 no.2
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• pp.167-176
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• 2012

In Korean military measuring systems interoperability is based on LISI (Level of Information System Interoperability) model at the requirement generation and acquisition process. However, LISI model cannot be used for interoperability measurement of system of systems (SoS) because LISI model is focused on interoperability measurement of a given system or system pair. Also, LISI model cannot provide quantitative information for interoperability decision because of qualitative rather than quantitative approach. This paper proposes a quantitative interoperability measurement methodology of SoS. At the proposed methodology, mission threads and supporting systems are identified using architecture approach, and Interoperability of SoS is measured with systems multiplicity and resemblance coefficient. Finally, a case study is presented to show the usefulness of the methodology.

• Spatial Information Research
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• v.10 no.1
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• pp.15-27
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• 2002

GIS has recognized as the Social Overhead Capital to improve national competition and to heighterl the productivity of adminstration in 1990's in Korea. As the size and the scope of the NGIS policy have drastically expanded, evaluation has become a critical process. Thus NGIS driving committee has adopted the GIS project evaluation scheme in NGIS law since 2000. But the HGIS evaluation scheme is not sufficient for the comprehensive appraisal on the GIS project in the Second National GIS Master Plan (2001-2005). This research aims to explore an the improved evaluation scheme of NGIS policy.

• Journal of the Korean Society of Groundwater Environment
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• v.4 no.3
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• pp.122-129
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• 1997

Spills or leaks of hazardous organic. compounds from underground storage tanks (USTs) are common contaminant sources of soil and groundwater. It would aid in managing USTs to assess and rank the potential environmental hazard posed by the USTs. Therefore, a preliminary hazard ranking system of USTs is developed in this study. The system is combined with GIS and consists of five steps: 1) selection of significant factors, 2) determination of the hierarchy of the factors. 3) determination of the weights, 4) calculation of the potential hazard, and 5) hazard assessment. The system is applied to the gas stations in Kwanak-gu, Seoul. The results indicate that the gas stations can be categorized in three groups as highly hazardous, less highly hazardous, and weakly hazardous. Seven gas stations belong to the highly hazardous group. Through the sensitivity analysis, four stations appear to possess high hazard potentials regardless of weights assigned to the factors. It appears that a user can make flexible application of the hazard ranking system with the user's experience and particular purposes. However, the system still needs validations against field survey data.

• Convergence Security Journal
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• v.6 no.3
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• pp.49-58
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• 2006

Currently there are many standards of network management. They are : SNMP (Simple Network Management Protocol-for Internet management), CMIP (Common Management Information Protocol-standardized by ITU-T and ISO), RMON (Remote network MONitoring-for distributed management of the LAN segment), and so on. Especially RMON has created the many concerns in order to manage subnetworks of a large network, but it has negative aspects. For instance, routers or hubs with RMON capability are expensive to a network manager because of adding heavy management cost. Moreover it imposes a heavier burden on network manager, because it must use a network management tool which will be additionally needed with RMON device. This paper proposes a model of PC based RMON Agent system. The RMON Agent system monitors the traffic on LAN segment through the use of a Virtual Device Driver (VxD), based on PC. In term of cost this model will replace the expensive RMON device, and eventually enable a network manager to manage LAN segment more efficiently, due to reduced cost.