• Journal of the Korean Institute of Intelligent Systems
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• 제8권6호
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• pp.119-121
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• 1998

For a fuzzy system modeled by a fuzzy hypergraph, two fuzzy similarity measures are proposed:one for the fuzzy similarity between fuzzy sets and the other between elements in fuzzy sets. The proposed measures can represent the realistic similarities which can not be given by the existing measures. With an example, it is shown that it can be used in the system analysis.

• Resources Recycling
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• 제7권5호
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• pp.41-45
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• 1998

A Hew way of contact angle measurement is derived based on simple geometrical calculation. Without using complicated contact angle measurement instrument. Just measuring the diameter and height of liquid lens made it possible to calculate the contact angle value with a reasonable reliability. To validate the contact angle value obtained by this method, contact angle of the same liquid lens is measured using conventional goniometer and it is verified that two values are nearly same within the limit of observational error.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제18권10호
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• pp.597-602
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• 2017

A method is proposed to secure the reliability of the antibacterial test method for textile materials used in the military. Antibacterial activity refers to the inhibition of bacterial growth and removal of harmful bacteria. Through KS K 0693 'Antibacterial Test Method for Textile Material', it is considered that there is a high possibility of error due to the human eye measurement. Therefore, the measurement reliability is improved by applying the image processing. As a result of the measurement, the proposed method showed a difference of about 0.9% compared with the results by conventional test method. The proposed method has the merits that the reliability can be secured by eliminating the error of the measurer, and the measurement time can be reduced.

• Journal of the Korea institute for structural maintenance and inspection
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• 제14권6호
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• pp.254-262
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• 2010

In order to evaluate vibration serviceability by means of non-contact vibration meter, serviceability of existing bridge were experimentally evaluated by using laser vibration meter. Test results were analyzed and compared with evaluation results acquired by using accelerometer and LVDT. To testify accuracy of laser vibration meter measured natural frequency were compared with that acquired by using accelerometer. According to test and comparison results it is showed that serviceability can be evaluated properly enough from the tolerance curve of Reiher-Meister for the estimated acceleration that can be calculated by the numerical differentiation of measured velocity. But because of cumulative numerical error occurred during integration of measured velocity in the time domain serviceability grade could be different from the result acquired by LVDT.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2008년도 춘계학술발표대회
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• pp.335-338
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• 2008

IT아웃소싱은 기업이 핵심 분야와 비 핵심 분야를 나눈뒤 전략적으로 비 핵심분야에 대한 기능을 서비스 제공자에게 위탁하여 특정 기능을 수행하도록 하는 경영기법으로 비용절감, 조직의 슬림화등 여러 가지 목적으로 실행된다. 그리고 최근에 들어 국내에서도 정보시스템을 서비스 제공자에게 아웃소싱 하는 일이 활성화 되고 있는 상황이다. 그리고 IT아웃소싱 계약서에는 서비스 수준이나 가치, 성과에 대한 보상 및 패널티를 부과하는 도구인 SLA를 도입하고 있고 그 측정 결과를 통해 제공받는 서비스의 품질을 확인하고 있다. 그러나 측정된 SLA지표를 통해서 확인되는 데이터는 하드웨어적인 측정치에 한정되어 아웃소싱을 통한 IT서비스의 수준 향상을 확인하기 어려우며 효과적인 SLA 기준 지표 선정이 쉽지 않아 실제적인 고객만족도를 확인하기 어려운 실정이다. 이에 본 연구에서는 ITIL에 기반 한 SLA측정 결과와 사용자 만족도를 측정하여 제시하였다.

• Korean Journal of Construction Engineering and Management
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• 제5권5호
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• pp.172-182
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• 2004

The performance measurement system of a company is an important tool to evaluate business result, to manage human resource and to achieve strategic management goals. Until 1990's, the performance in most of companies had been measured by financial perspectives. Recently non-financial perspectives with various and balanced view points are used. In the construction industry, the same situation is happened. However, effective tools are not developed yet. Therefore, this research proposes a framework of the comparable performance measurement in the construction industry. This framework is based on concept of the balanced scorecard(BSC) and prepared respectively for owner, contractor and architect/engineer Using this framework, it is possible to compare performance of a company with each other and to benchmark the best performance.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2010년도 춘계학술대회
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• pp.365-371
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• 2010

네트워크 보안에서의 효율성은 침입차단 성능과 시스템 performance로 대표된다. 네트워크 보안의 성능 향상을 위해서는 네트워크 인프라스트럭쳐 에서의 기능적인 효율성을 우선 확보해야 한다. 그동안 네트워크 보안 효율성 제고 달성에 관한 많은 방법론들이 연구되었다. 이같은 연구의 목적은 인프라스트럭쳐에서의 효율성 메커니즘 구현을 통해 빠른 응답시간내에 보다 우수한 침입차단을 실현하는 것이다. 이를 위해서 네트워크 보안 도메인 효율성 구조를 설계하고 구조별 효율성 측정방법을 연구함으로써 인프라스트럭쳐상에서의 보안방법론 모델을 제안하였다. 본 연구에서 제안한 방법론을 통해 체계적인 도메인 설계와 측정방법을 실시할 경우 운용인프라스트럭쳐 시스템상에서 보안 효율성 확보가 가능함이 입증되었다.

• Information Systems Review
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• 제8권2호
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• pp.189-209
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• 2006

Business expects that IT investment would maximize the effects, like availability, timeliness, rapidity of information, by practical using of information technology for a strategic goal. However, it is not clear yet that IT investment would increase business productivity and could create profitability in the end-the linkage between IT investment and business KPI(Key Performance Indicator). In this case study(only provides post-evaluation case), we suggested integrated IT ROI(Return On Investment) methodology with a consistent and integrated view, on the base of practical implementation at Korean financial company. Especially, we evaluated connection between IT and business strategy, made business-related IT KPI development methodology, suggested framework for sustainable IT evaluation and management.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• 제10권5호
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• pp.27-43
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• 2015

Ever more so than any other times, today's corporations today face an ultimate issue of acquiring highest work expertise for their employees. However, most of current academic researches try to focus on what factors comprise an expertise while they fail to tackle the very issue of detailed numerical measurement of the expertise factors recommended improvement paths, and goals for each measured expertise level. Hence, this study suggests more objective and highly reliable identification of work competence measurement factors and the correlation among the identified factors. For details, it tries to propose a methodology of expertise measurement by developing into the definition of experts and expertise, reestablishment of expertise factors, determination of reference points of the expertise factors, and weighting of the factors. This measurement methodology finds that it itself has significant correlation with existing work competency level measurement and test tools. Therefore it is identified to justify its effectiveness. Finally, this study proposes an action point of establishing a national expertise architecture and its frameworks for various societies in general.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2003년도 춘계학술대회
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• pp.55-62
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• 2003

최근 들어 행정기관의 정보 기술 분야에 막대한 예산이 투입되면서 공공부문의 정보화가 빠른 속도로 전개되고 있다. 이러한 공공부문의 정보화를 위한 노력들이 과연 어떤 효과를 가져오고 있는지에 대한 연구의 필요성이 제기된다. 본 연구에서는 성과측정을 위한 척도로서 행정기관 IT생산성 지수를 산출하기 위한 지표를 선정하고 그에 따라 지수를 산정하여 이를 연도별로 비교해 보고자 한다. 행정의 업무효율성이라는 측면에서 IT생산성은 3년 동안 꾸준히 증가추세를 보인 반면, 대민서비스를 통한 고객만족도를 생산성개념에 추가시켰을 때는 2001년의 생산성지수가 전년도에 비해 약간 저하되었으며, 2002년에는 증가추세를 나타내고 있다.