• Journal of the military operations research society of Korea
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• v.33 no.1
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• pp.19-29
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• 2007

This study deals with developing and operating Reliability Analysis & Evaluation System for aircraft parts by analyzing ROKAF's AMMIS and phase inspection data for optimal inspection frequency. We suggest operating model with improving and adjusting inspection cycle by analyzing failure time data and tendency of crack with RELEX and Minitab software.

• The Transactions of the Korea Information Processing Society
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• v.5 no.10
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• pp.2575-2583
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• 1998

The productionof the highly relible softwae systems and theirs performance evaluation hae become important interests in the software industry. The software evaluation has been mainly carried out in ternns of both reliability and performance of software system. Software reliability is the probability that no software error occurs for a fixed time interval during software testing phase. These theoretical software reliability models are sometimes unsuitable for the practical testing phase in which a software error at a certain testing stage occurs by causes of the imperfect debugging, abnornal software correction, and so on. Such a certatin software testing stage needs to be considered as an outlying stage. And we can assume that the software reliability does not improve by means of muisance factor in this outlying testing stage. In this paper, we discuss Bavesian software reliability growth modeling and estimation procedure in the presence of an imidentitied outlying software testing stage by the modification of Jehnski Moranda. Also we derive the Bayes estimaters of the software reliability panmeters by the assumption of prior information under the squared error los function. In addition, we evaluate the proposed software reliability growth model with an unidentified outlying stage in an exchangeable model according to the values of nuisance paramether using the accuracy, bias, trend, noise metries as the quantilative evaluation criteria through the compater simulation.

• Therapeutic Science for Rehabilitation
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• v.12 no.1
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• pp.79-92
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• 2023

Objective : This study aimed to assess the reliability of a three-dimensional (3D) motion analysis program for measuring the range of motion (ROM) of wrist and finger joints. Methods : The study recruited 50 people who had no restrictions on wrist and finger movements, understood the purpose of this study, and agreed to participate. Using a goniometer and a 3D motion analysis program, a total of 11 wrist and finger ROM were measured once each. To measure the reliability of the 3D motion analysis program, the degree of agreement and inconsistency of the measured values were compared. Results : Analysis of the degree of agreement of the measured values revealed that 38 out of 44 items showed a very high degree of agreement. Regarding analysis of inconsistency in the measured values, inconsistencies were found in three items. Conclusion : The results of this study confirmed that the ROM of the joint could be measured using the 3D motion analysis program applied in this study. In addition, it might be expected that the 3D motion analysis program would be used in various clinical fields owing to the advantages of measurement convenience and accuracy.

• Journal of Digital Convergence
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• v.19 no.8
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• pp.249-255
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• 2021

This study proposed a method for determining weights for the eight quality characteristics, such as functionality, reliability, usability, maintainability, portability, efficiency, security, and interoperability, which are suggested by international standards, focusing on software test reports. Currently, the test results for software quality evaluation apply the same weight to 8 quality characteristics to obtain the arithmetic average. Weights for 8 quality characteristics were applied using the results from text analysis, and weights were applied using the results of text analysis of test reports for two products. It was confirmed that the average of test reports according to the weighted quality characteristics was more efficient.

• Journal of Internet Computing and Services
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• v.7 no.4
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• pp.1-10
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• 2006

We are studying international standard about the software quality evaluation. The software quality has been more important on users and developers. In this paper, first, we study international tendency of the inside and outside of the country in software quality evaluation for evaluating the software quality objectively and quantitatively, Second, we notify a new direction for software quality standard of inside and outside of country. Third, we study on the testing method of software reliability for making use of the software reliability growth model. Fourth, we spread method about standard of the software quality evaluation, fifth, we research into the international standard ISO/IEC 9126 and ISO/IEC 25000 series for evaluation of software quality testing, and we propose to the application plan of software quality testing.

• The Transactions of the Korea Information Processing Society
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• v.13 no.6
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• pp.278-283
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• 2024

When implementing software, there can be side effects that pose a threat to human life. Therefore, it is necessary to measure the impact of software on safety and create alternatives to mitigate and prevent threats. To conduct a software safety assessment to measure the impact of threat factors, the following components are necessary. This paper aims to classify the threat factors of software into internal and external factors and quantitatively demonstrate the impact of these threat factors.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.595-598
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• 2015

오늘날 선박, 항공, 자동차산업 등의 복합화로 인하여 내장형 소프트웨어의 중요성이 크게 대두되고 있다. 중요도가 높아질수록 고장 현상 발생률이 증가하고 이에 따른 오류나 고장에 대한 영향도 급증하기 때문에, 신뢰성이 그만큼 중요하게 되었다. 신뢰성의 부특성에는 성숙성, 오류허용성, 회복성, 준수성이 있고, 이에 따라 품질평가 항목 메트릭이 제시되어 있다. 신뢰성 평가 기준은 수리적 난해함과 데이터 수집에 관한 문제에 부딪혀 적용하는 데에 어려움이 따르는 실정이다. 이와 같은 문제점을 해결하기 위하여 품질평가 메트릭의 새로운 방안을 제시하였다. 기존에 제시되어 있는 대표적인 신뢰성 모델 두 가지 NHPP(Non-Homogeneous Poisson process) Model과 Jelinski-Moranda Model의 결과 값과 제시한 방법을 토대로 나온 결과 값을 비교하여 타당성을 입증한다. 기존의 난해한 방법을 이용하지 않고도 정확한 평가 결과를 얻을 수 있도록 하는 것이 본 연구의 목적이다.

• Journal of KIISE
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• v.42 no.9
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• pp.1117-1123
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• 2015

Use The Use Case Points method is a software estimation method that is based on user requirements. When requirement analysts elicit user requirements, they obtain different use cases because different levels of detail are possible for the Use Case, and this affects the Use Case Points. In this paper, we suggest a method to refine the level of detail of the Use Case by using the concept of an elementary function. This refinement method achieves the desired reliability for the Use Case Points because it produces less of a deviation in the Use Case Points for different requirement analysts than other methods that are based on the step, transaction, and narrative of the Use Case.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.379-381
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• 2004

내장형 실시간 시스템은 점차 소형화, 다기능화 하여 그 복잡도가 증가하고 있다. 또한 제약사항이 일반적인 정보시스템 보다 더 까다롭다. 신뢰성 있고 안정적인 내장형 실시간 시스템을 구현하기 위해서 소프트웨어 공학의 적용이 필요하며, 특히 소프트웨어 아키텍처의 적용을 필요로 한다. 이에 본 논문에서는 내장형 실시간 시스템 개발 중 최적의 소프트웨어 아키텍처를 선정하기 위해서 필요한 소프트웨어 아키텍처 평가 절차를 제시한다. 측정기법(Measuring Techniques)과 질문기법(Questioning Techniques)을 혼합하여 분석을 수행한다. 측정기법을 위해서는 실 프로토타이핑(Real Prototyping)을 사용하여 질문기법을 위해서는 체크리스트를 사용한다 이를 통하여 소프트웨어 개발 생명주기의 초기단계에서 이리 목표시스템의 품질을 예측하고 위험을 미리 식별할 수 있다.

• The Journal of Information Technology and Database
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• v.4 no.1
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• pp.93-103
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• 1997

소프트웨어에 대한 사용자의 인식이 높아감에 따라 다양한 기능의 고품질 소프트웨어의 개발이 요구되고 있으며 이러한 요구를 만족시킬 수 있는 방안들이 다양한 관점에서 연구되고 있다. 그 중에서도 소프트웨어의 품질평가를 통해 그 결과를 개발자에게 피드백함으로써 소프트웨어의 품질을 향상시키려는 관점에서 품질평가 방법론 및 지원도구에 대한 연구가 활발히 진행되고 있다. 본 논문에서는 소프트웨어의 품질에 관한 국제표준인 ISO/IEC 9126의 기능성, 신뢰성, 사용성, 효율성, 보수성, 이식성 등의 품질특성을 바탕으로 보수성에 대한 품질특성, 부특성, 내부특성의 체계에 따라 메트릭스를 정의하고 내부특성 체계에 맞추어 품질측정표를 개발함으로써 실제 품질향상을 위해 필요한 개발자 관점의 내부특성의 품질평가를 통해 사용자 관점의 외부특성에 대해 평가할 수 있는 체계를 확립하고 실제 프로젝트 업무에 대해 평가한 결과를 제시하였다.