• KIISE Transactions on Computing Practices
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• v.23 no.6
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• pp.335-342
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• 2017

In the verification and validation procedures regarding the safety-critical software of nuclear power plants for the attainment of the requisite license from the regulatory body, it is difficult to judge the safety and dependability of the development, implementation, and validation activities through a simple reading and review of the documentation. Therefore, these activities, especially safety assurance activities, require systematic evaluation techniques to determine that software faults are acceptable level. In this study, a safety case methodology is applied in an assessment of the level and depth of the results of the development and validation of a manufacturer in its targeting of the bistable processor of a digital reactor protection system, and the evaluation results are analyzed. This study confirms the possibility of an effective supplementation of the existing safety demonstration method through the application of the employed safety case methodology.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.45-46
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• 2015

The guideline on software quality assurance and human-centered design for e-Navigation was approved as IMO circular June 2015. e-Navigation software systems are characterized by a high proportion of data quality and quality in use. The purpose of this paper is to improve the quality in use of the maritime software quality assurance for the safety route guiding service. In this study, we added the stage which the stockholders such as a project manager, software developers, and end-users use the prototype that was developed based on the scenarios before the stage of design and development. Through this, we could review the requirement about the quality in use for a limited time at the beginning of the project. also we could raise understanding the concept of this project and goal system.

• Progress in Medical Physics
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• v.28 no.1
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• pp.22-26
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• 2017

We have developed an analytic software that can easily analyze the spot position and width of proton beam therapy nozzles in a periodic quality assurance. The developed software consists of an image processing method that conducts an analysis using center-of-spot geometry and a Gaussian fitting method that conducts an analysis through Gaussian fitting. By using the software, an analysis of 210 proton spots with energies 150, 190, and 230 MeV showed a deviation of approximately 3% from the mean. The software we developed to analyze proton spot positions and widths provides an accurate analysis and reduces the time for analysis.

• The KIPS Transactions:PartD
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• v.17D no.6
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• pp.423-430
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• 2010

As software becomes large-scale and complicated, the need for Quality Assurance and management is increased and software testing is becoming more important. The main aims of software testing are not only detecting and handling the defects in the system but also investigating and managing the present system. But automatic testing tools require lots of time and efforts to detect and manage the risk in the system because test-cases used in the general automatic testing tools have the simply static information. In this thesis, the dynamic management technique for weighted testcases is designed to test the high-risk testcases preferentially by giving the testcases dynamic weight.

• Korean Management Science Review
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• v.12 no.2
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• pp.15-30
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• 1995

The objectives of this paper are to provide software developer selection criteria and to develop evaluation framework using AHP (Analytic Hierarchy Process). The selection criteria are extracted from Software Development Life Cycle, Quality Assurance, and Productivitiy of Organization. In this paper, the selection model is proposed and its examples are illustrated. Though some further research is required, the proposed model can be regarded as a basis of a DSS for the selection of the software developer.

• Proceedings of the Korean Nuclear Society Conference
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• 2005.05a
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• pp.1309-1310
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• 2005

• Journal of Advanced Marine Engineering and Technology
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• v.39 no.10
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• pp.1049-1053
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• 2015

This paper proposes to include engine information in Maritime Service Portfolio (MSP) for effective implementation of e-Navigation. Even though engine information is one of most important element to e-Navigation, MSP consists of mainly about navigation and communication information not included engine information. Furthermore, in reality, engine information sent from ship side such as mainly noon report and Planned Maintenance System (PMS) is too limited to make e-Navigation possibly. Therefore, Remote diagnostic structure receiving and sending data of engine information must be included in MSP for implementation of e-Navigation. Also, it has to be designed, and developed by Software Quality Assurance (SQA).

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1445-1447
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• 2012

팀으로 구성된 개발 조직은 주어진 시간 안에 가용할 수 있는 인력으로 고객에게 전달될 최종 산출물인 소프트웨어를 개발한다. 개발과 통합을 거친 소프트웨어는 테스트를 거치며 발생되는 결함에 대해 수정 조치한다. 하지만 결함 수정과 병행하여 초기 요구사항은 변경되고 추가되어 개발되는 소프트웨어에 반영되야 함으로 팀에서는 메일, 전화, 또는 게시판 방식으로 결함 사항을 알리고 최종 소프트웨어를 개발해 나간다. 본 논문은 이러한 환경에 결함추적도구를 사용하여 결함 발견 시 등록하고, 해결된 소프트웨어의 버전을 관리하기 위한 방법에 대해 오픈소스 기반의 형상관리도구와 결함추적도구를 활용한 환경을 연구해 나가고자 한다.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.30 no.2
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• pp.9-21
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• 2012

• Progress in Medical Physics
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• v.28 no.4
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• pp.197-206
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• 2017

We develop guidelines for the quality assurance of radiation treatment planning systems (TPS) by comparing and reviewing recommendations from major countries and organizations, as well as by analyzing the AAPM, ESTRO, and IAEA TPS quality assurance guidelines. We establish quality assurance items for acceptance testing, commissioning, periodic testing, system management, and security, and propose methods to perform each item within acceptable standards. Acceptance includes tests of hardware and network environments, data transmission, software, and benchmarking as specified by the system supplier, and apply the IAEA classification criteria. Commissioning includes dosimetric and non-dosimetric items for assessing TPS performance by applying the AAPM classification criteria and the latest technical items from the IAEA. Periodic quality assurance tests include daily, weekly, monthly, yearly, and occasional items by applying the AAPM classification criteria. System management and security items include the state and network connectivity of TPS, periodic data backup, and data access security. The guidelines for TPS quality assurance proposed in this study will help to improve the safety and quality of radiotherapy by preventing incidents related to radiotherapy.