• 대한안전경영과학회:학술대회논문집
• /
• 대한안전경영과학회 2003년도 추계학술대회
• /
• pp.167-172
• /
• 2003

This study reviews the revisions and updates to the Release 3.5 version of the TL 9000 Measurements Handbook. This paper introduces the new organization of QuEST Forum Work Groups(WGs) and how to apply TL 9000 standards in software product lifecycle.

• 디지털융복합연구
• /
• 제11권11호
• /
• pp.335-342
• /
• 2013

본 연구에서는 소프트웨어 제품 테스팅 과정에서 관측고장시간에 근거한 로그형 결함 발생률을 고려한 소프트웨어 신뢰성 비용 모형에 대하여 연구 하였다. 신뢰성 분야에서 많이 사용되는 Goel-Okumoto모형을 이용한 새로운 로그 형 결함 확률을 반영한 문제를 제시하였다. 수명분포는 유한고장 비동질적인 포아송과정을 이용하고 모수 추정법은 최우 추정법을 이용 하였다. 따라서 본 논문에서는 로그형 결함 발생률을 고려한 소프트웨어 비용모형 분석을 위하여 소프트웨어 고장 시간간격 자료를 적용하여 비교 분석하였다. 이 연구를 통하여 소프트웨어 개발자들은 방출최적시기를 파악 하는데 어느 정도 도움을 줄 수 있을 것으로 사료 된다.

• 산업경영시스템학회지
• /
• 제18권36호
• /
• pp.193-203
• /
• 1995

The production management system software which can be applied In the medium and small companies is developed. Since the medium and small companies hesitate to install the computer system for production management owing to the lack of funds and the complexities of operation, the system is made to be used in PC and only requires minimum input data. This system is composed of interrelated modules for receive/order release, inventory management MRP, new product registration, document management and production scheduling. In this paper the architecture of the system, functions of each module, and information processing procedures of each funtion are discussed.

• 정보교육학회논문지
• /
• 제2권1호
• /
• pp.35-51
• /
• 1998

Software reliability growth model is one of the evaluation methods, software quality which quantitatively calculates the software reliability based on the number of errors detected. For correct and precise evaluation of reliability of certain software, the reliability model, which is considered to fit dose to real data should be selected as well. In this paper, the optimal model for specific test data was selected one of among five software reliability growth models based on NHPP(Non Homogeneous Poission Process), and in result reliability estimating scales(total expected number of errors, error detection rate, expected number of errors remaining in the software, reliability etc) could obtained. According to reliability estimating scales obtained, Software development and predicting optimal release point and finally in conducting systematic project management.

• Asia pacific journal of information systems
• /
• 제30권3호
• /
• pp.457-496
• /
• 2020

This study aims to extensively analyze the performance of various Machine Learning (ML) techniques for predicting version to version change-proneness of source code Java files. 17 object-oriented metrics have been utilized in this work for predicting change-prone files using 31 ML techniques and the framework proposed has been implemented on various consecutive releases of two Java-based software projects available as plug-ins. 10-fold and inter-release validation methods have been employed to validate the models and statistical tests provide supplementary information regarding the reliability and significance of the results. The results of experiments conducted in this article indicate that the ML techniques perform differently under the different validation settings. The results also confirm the proficiency of the selected ML techniques in lieu of developing change-proneness prediction models which could aid the software engineers in the initial stages of software development for classifying change-prone Java files of a software, in turn aiding in the trend estimation of change-proneness over future versions.

• ETRI Journal
• /
• 제42권2호
• /
• pp.196-204
• /
• 2020

Open-source software development projects are well suited for exploring new ideas and acquiring knowledge from developers outside of the project. In this paper, we examine the impact of external developers on innovation in open-source software development from the perspective of organizational learning theory. We examine the roles of external and internal developers, who "explore" and "exploit," respectively, on the innovation performance of 17 691 open-source software development projects whose data is stored in the GitHub platform. The results indicate that a multifaceted strategy, in which the exploitation successfully supports the exploration, is most effective for their success. The results also indicate that the role of exploration decreases after the release of the software.

• 한국안전학회지
• /
• 제14권4호
• /
• pp.120-125
• /
• 1999

This study evaluated the effect of the accidents caused by fire, explosion, and toxic gas release by using SuperChems, quantitative hazardous material release modeling software, which estimates the potential area of damage. According to the loss severity, the appropriate risk management principles can be applied. Risk management is divided into the two methods which are risk control and risk financing. Risk control includes risk avoidance, risk spreading and diversification, and risk reduction. Risk financing includes risk retention and risk transfer. The results of this study can help the related company determine the appropriate reserve fund and the amount to be insured against the third party losses according to the estimated loss severity.

• 동아시아식생활학회지
• /
• 제15권6호
• /
• pp.773-781
• /
• 2005

Menu-development is one of the important parts in restaurant business. Menu in restaurant has to be developed by customer's net which is the key for the success in restaurant management, The purpose of this study is to determine stress level, food intake, food habit, food preference of employees in certain companies and to develop proper menus for employees who are under high stress state. This study also determine whether the customers under stress will visit restaurant which provide stress-release-menu or not This study was conducted to people who live in Seoul and its adjunct area, including Gyunggi Province. The subjects were selected at random and the Questionnaires were sent to the subject by mail. The surveys included personal information, extent of stress, food habits related to the stress. The statistical tests were performed with SPSS computer software program. The male subjects were $44.9\%$ and females were $55.1\%$, aged between $30\~40$ years old. The percentages of no risk, borderline, and at risk, in the stress level of subjects, were 48.3, 16.5 and $35.2\%$, respectively. Most of the subjects, $61.8\%$, had normal food habit and $29.2\%$ had bad food Habits. The ideal costs of meals were $3,000\~5,000Won$ for breakfast$(57.3 \%)$, $5,000\~10,000Won$ for lunch$(54.7\%)$, and $10,000\~20,000Won$ for dinner$(38.2\%)$. Subjects under high stress answered 0 need a dietary supplementation for stress release. This study also showed that $92\%$ of the subjects under stress were willing to visit restaurants which have stress-release menus. In conclusion, adults who are under stress are shown to be interested in stress and nutrition management and they are willing to visit restaurants providing stress-release menus.

• 디지털산업정보학회논문지
• /
• 제8권4호
• /
• pp.25-34
• /
• 2012

In this study, in the process of testing before the release of the software products designed, software testing manager in advance should be aware of the testing-information. Therefore, the effective learning effects perspective has been studied using the NHPP software. The finite failure nonhomogeneous Poisson process models presented and applied property of learning effect based on truncated time and delayed S-shaped software reliability. Software error detection techniques known in advance, but influencing factors for considering the errors found automatically and learning factors, by prior experience, to find precisely the error factor setting up the testing manager are presented comparing the problem. As a result, the learning factor is greater than autonomous errors-detected factor that is generally efficient model can be confirmed. This paper, a failure data analysis was performed, using time between failures, according to the small sample and large sample sizes. The parameter estimation was carried out using maximum likelihood estimation method. Model selection was performed using the mean square error and coefficient of determination, after the data efficiency from the data through trend analysis was performed.

• 대한기계학회논문집A
• /
• 제27권3호
• /
• pp.416-423
• /
• 2003

During the last ten years, the need has been increased for reducing maintenance cost for aged equipments and ensuring safety, efficiency and profitability of petrochemical and refinery plants. RBI (Risk Based Inspection) methodology is one of the most promising technologies satisfying the need in the field of integrity management. In this study, a user-friendly software, realRBl for RBI based on the API 581 code was developed. This software has modules for evaluating qualitative and semi-quantitative risk level, analyzing quantitative risks using the potential consequences of a failure of the pressure boundary, and assessing the likelihood of failure. A quantitative analysis was performed for 16 columns in a domestic NCC (Naphtha Cracking Center) plant whose operating time reaches about 12 years. Each column was considered as two equipment parts by dividing into top and bottom. Generic column failure frequencies were adjusted based on likelihood data. After determining release rate, release duration and release mass for each failure scenario, flammable/explosive and toxic consequences were assessed. Current risks for 32 equipment parts were evaluated and risk based prioritization were determined as a final result.