• 한국군사과학기술학회지
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• 제19권1호
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• pp.57-65
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• 2016

Threat evaluation is a process to estimate the threat score which enemy aerial threat poses to defended assets. The objective of threat evaluation is concerned with making an engagement priority list for optimal weapon allocation. Traditionally, the threat evaluation of massive air threats has been carried out by air defence experts, but the human decision making is less effective in real aerial attack situations with massive enemy fighters. Therefore, automation to enhance the speed and efficiency of the human operation is required. The automatic threat evaluation by air defense experts who will perform multi-variable judgment needs formal models to accurately quantify their linguistic evaluation of threat level. In this paper we propose a threat evaluation model by using a fuzzy rule-based inference method. Fuzzy inference is an appropriate method for quantifying threat level and integrating various threat attribute information. The performance of the model has been tested with a simulation that reflected real air threat situation and it has been verified that the proposed model was better than two conventional threat evaluation models.

• 한국IT서비스학회지
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• 제8권4호
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• pp.141-150
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• 2009

There are no objective standards for selection and improvement of SLA evaluation metrics for IT service. In this study, we analyze the current IT maturity models for selection and improvement of the metrics and then we derive them according to the maturity levels and propose the redesigned maturity model. To verify whether the model is applicable, we execute a case study based on the D company. We apply the proposed evaluation metrics of the maturity models to the D company and evaluate the metrics. We select a proper level of the D company and an improvement line after measuring evaluation metrics in the maturity level 2. We propose improvement guidelines of evaluation metrics which score is less than the improvement line's and derive SLA evaluation metrics. By using the SLA evaluation metrics for a year, we prove that the way of selection and improvement is useful.

• 한국정보시스템학회지:정보시스템연구
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• 제16권3호
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• pp.109-132
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• 2007

In the paper, we builds an advanced new credit evaluation system for Micro-small sized individual firms through appropriate evaluation factors derived by logistic regression analysis for credit evaluation model using in Korean Federation of Credit Guarantee Foundations, and the weights of factors computed by analytic hierarchy process(AHP). Industry characteristics are more applied to previous credit model with the additional the financial fact-information and non-financial judgement-information. Our results show that the financial factors have become more important than three years ago. Moreover, in the non-financial factors, the fact-information factors consider more important then the judgement-information factors. A new credit evaluation system is developed based on this credit evaluation model.

• 품질경영학회지
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• 제51권2호
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• pp.185-202
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• 2023

Purpose: The purpose of this study is to identify key performance evaluation items and factors that are effective and practical for project management of defense standard standard improvement projects, and to develop a quantitative performance evaluation model. Methods: For the development of a performance evaluation model for defense standard improvement projects, we analyzed past major project performance and derived evaluation items and factors. To increase the objectivity and efficiency of project evaluation, we developed an evaluation index that enables relative evaluation of evaluation targets, and calculated the main importance of evaluation items using the Analytic Hierarchy Process (AHP) method based on the main opinions of expert groups. Results: The study resulted in the identification of main performance items for defense standard improvement projects, which were classified into defense standard conformity review performance and defense standard improvement performance items. We also simplified the evaluation model by integrating various evaluation items into similar evaluation factors. Additionally, we developed a quantitative evaluation index that enables relative evaluation of the targets and verified the objectivity and validity of the suggested performance evaluation model by reevaluating it using performance data from past commissioned professional institutions Conclusion: Developing a quantitative evaluation model for defense standard improvement projects is expected to provide a means of measuring the effectiveness of the project, and to be used as a tool to determine the appropriateness and effectiveness of medium and long-term project plans.

• 한국안전학회지
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• 제24권3호
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• pp.96-101
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• 2009

In this study, a risk-appearance frequency evaluation model for railway level-crossing accidents is developed with the frequency estimation based on the accident history. It follows the worldwide common safety management approach and reflects the operation conditions and accident properties of the domestic railway system. The risk appearance frequency evaluation process contains a development of accident scenarios by defining the system configurations and functions, and a frequency estimation of hazardous events based on the accident history. The developed model is verified with the accident history during 5 years('03-'07) for 3 hazardous events: 'Being trapped in level crossing(Hl)', 'Crossing during warning signal(H2)' and 'Breaking through/detouring the barrier(H3)'. This risk appearance frequency evaluation model will be combined with a consequence evaluation model so as to offer full risk assessment for the railway accident. The accident risk assessment will contribute to improving the safety management of the railway system.

• 정보관리학회지
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• 제22권4호통권58호
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• pp.39-59
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• 2005

본 연구는 정보활용능력의 기준과 범위를 설정하여 평가영역 및 평가문항을 설계함과 동시에 대학생들의 현재 정보활용능력의 수준을 진단하고 분석하여 정보활용능력 개발을 위한 평가모형을 제시하는데 목적이 있다. 실증적인 연구를 위해 정보활용능력 웹 평가사이트를 설계하여 학부학생을 대상으로 정보활용능력을 측정하였다. 정보활용능력 구성영역을 통계적 요인분석을 통해 정보자원 영역, 정보요구 영역, 정보검색 영역. 정보분석 영역, 정보기술 및 표현 영역, 정보윤리 영역임을 밝혀내었고, 기초환경 요인, 자가진단 요인, 영역별 요인, 정보활용능력 총점 요인 및 문항분석을 통해 평가설계 요소와 평가절차, 영역별, 수준별 교육 및 평가지침을 제시하였으며, 이를 근거로 정보활용능력의 통합적 평가모형을 개발하였다.

• 디지털융복합연구
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• 제13권5호
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• pp.251-257
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• 2015

침입방지시스템은 네트워크에서 공격 서명을 찾아내어 자동으로 조치를 취하여 비정상적인 트래픽을 중단시키는 보안시스템이다. 수동적인 방어를 하는 침입차단시스템이나 침입탐지시스템과 달리 침입경고 이전에 침입을 중단시키는 개념의 솔루션이다. 침입방지시스템의 보안성 성능은 보안감사, 사용자 데이터 보호, 보안 인증 등에 좌우되며 성능은 탐지시간, 처리량, 공격차단 성능 등에 좌우된다. 본 연구에서는 이러한 침입방지시스템의 보안성 성능평가를 위한 모델을 구축하기 위해 CC(Common Criteria : ISO/IEC 15408)와 소프트웨어 제품평가에 관한 ISO 국제표준을 근간으로 하여 융합 성능평가 모델을 구성하였다.

• 감성과학
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• 제16권2호
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• pp.149-156
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• 2013

본 연구에서는 감성분석기법이 환경평가에 적극 적용되어지면서 쓰이는 감성평가모형을 선행연구조사와 실험을 통해 두 가지 축약형 모형과 추론형 모형으로 구분하였다. 또한 두 가지 유형의 대표 모형인 EPA모형과 PAD모형의 평가어휘들의 특성을 실험을 통해 분석해 본 결과, 두 모형은 개발방식과 어휘구성에 큰 차이가 있고, 요인분석을 통해 어휘들이 모형별로 축약되는 것을 확인하였으며, 유사성 관계를 다차원척도법으로 분석한 결과 서로 관계성이 어느 정도 성립되는 것을 확인하였다. 이를 통해 감성평가모형이 감성평가에 사용될 때는 한쪽으로 치우치기 보다는 모형의 특징을 분석하여 적용하면 보다 객관적인 이미지 분석이 가능함을 알 수 있다. 본 연구에서는 가로경관 환경평가로만 국한되었다면, 다양한 분야에서의 평가대상이 비교될 수 있는 감성평가모형에 대한 지속적인 연구가 필요하다.

• 한국안전학회지
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• 제25권6호
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• pp.186-196
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• 2010

It has been well known that traffic accidents occur under combined functional contributions of drivers, vehicles and road facilities, and that evaluation of safety levels for a specific road section or point is generally much complicated. Additionally, most of traffic accidents occur randomly implicating it is necessary to be evaluated in terms of probability theory. Thus, the evaluation model which reflects various characteristics and probabilistic distributions of traffic accidents has been necessary. The present paper provides a reliability based model with variables of probabilistic operating speeds and design speeds together which have been individually explaining associated characteristics in traffic accidents. Consequently, the model made it possible for speed management and road improvement projects to be evaluated in a common index. Application studies were performed in three cases. Through the studies, couples of facts were identified that the model successfully considered the probabilistic operating speeds and design speeds together and that then, the model evaluated road safety alternatives relatively which are complicatedly characterized and differently located.

• International Journal of Quality Innovation
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• 제10권1호
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• pp.25-36
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• 2009

The purpose of this study is to analyze the efficiency of the service quality activity itself by using the DEA Model, in contrast to previous quality evaluation methods, as an attempt to evaluate the service quality activities of the distribution industry. Furthermore, by complementing the shortfalls of the weighted value of the DEA Model, it recommends a DEA/PS Model that is appropriate in the evaluation of service quality activities. Based on this model, the study proposes the SQAE Model, an evaluation tool to complement the traditional measuring method. According to the results of the analysis of 18 sample distribution businesses, there was a discrepancy by business in the results of the Traditional Scoring System and the Evaluation Measuring System. Therefore, it is most desirable to not only be active in service quality activities but also increase efficiency at the same time.