• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2001년도 춘계학술대회
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• pp.77-81
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• 2001

Burn-in is a test procedure to find and eliminate the inherent initial failure of a product during or at the final stage of production process. Software testing is the validation and verification process which is used to cut off the faults from a software. The two have the common function and objective of "debugging". This article summarizes some significant models on the optimal hardware and software burn-in time, and provides the relevant paper lists. The need for the development of the unified burn-in policy of a hardware-software system is addressed.addressed.

• 정보과학회 컴퓨팅의 실제 논문지
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• 제23권6호
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• pp.335-342
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• 2017

원자력발전소 안전-필수 소프트웨어를 개발하고 검증 및 확인을 수행하여 규제기관으로부터 인허가를 받기 위하여 단순하게 문서를 읽고 검토해서는 개발, 구현 및 검증활동에 대한 신뢰성과 안전성 확보에 대하여 정확하게 판단하기가 쉽지 않다. 따라서 이러한 활동, 특히 안전보증 활동이 소프트웨어 결함이 허용가능한 수준인지 판단하기 위한 체계적인 평가기술이 필요하다. 본 연구에서는 원전 디지털 원자로보호계통의 비교논리 프로세서와 동시논리 프로세서를 대상으로 제작자가 수행한 개발 및 검증 결과물의 수준과 깊이를 평가하기 위해 안전진술(Safety case) 방법론을 적용하고 그 결과를 분석한다. 안전진술 방법론 적용으로 기존의 안전입증 방법을 효과적으로 보완할 수 있음을 확인하였다.

• 산업경영시스템학회지
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• 제19권38호
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• pp.61-68
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• 1996

Quality Assurance Principles must be effectively implemented in developments and in use of safety critical software in nuclear industry. Brief definitions related to computer software and quality assurance were defined and several methods for evaluating software quality were proposed herewith. Independent verification and validation was suggested to assure the quality of safety critical software.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2007년도 추계종합학술대회
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• pp.725-728
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• 2007

Software security is about making software behave correctly in the presence of a malicious attack, even though software failures usually happen spontaneously in the real world. Standard software testing literature is concerned only with what happens when software fails, regardless of intent. The difference between software safety and software security is therefor the presence of an intelligent adversary bent on breaking the system. Software security for attacking the system is presented in this paper

• 한국멀티미디어학회논문지
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• 제21권10호
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• pp.1203-1210
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• 2018

As the use of public transportation is increasing, a service considering the convenience of passengers is being launched utilizing the Internet (IoT) data collected through the bus information system. However, the bus information system only provides limited information such as the current location of the bus (GPS) and the expected arrival time at the stop. Additional IoT sensor information is needed to provide various services for the safety and convenience of passengers. In this paper, to improve the safety and convenience of passengers, we have added the boarding doors imaging sensor, temperature and humidity sensors, and sensor for measuring the number of passengers. The proposed IoT bus system can attach various sensors to buses to provide high-quality safety services to passengers.

• 한국철도학회논문집
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• 제12권1호
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• pp.81-87
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• 2009

최근의 컴퓨터 기술의 발달에 따라 열차제어시스템들이 컴퓨터 소프트웨어에 의존성이 더욱 증가되고 있으며, 이에 따라 이러한 열차제어시스템 소프트웨어의 안전성에 대한 테스팅이 더욱 중요하게 되었다. 본 논문에서는 이러한 열차제어시스템 소프트웨어를 위한 코딩규칙의 테스팅 자동화 도구의 적용을 제안하였으며, 코딩규칙 테스팅 자동화 도구의 구현 및 적용결과를 제시하였다. 구현 툴에서의 테스팅 항목은 철도시스템 소프트웨어 관련된 국제규격과 MISRA-C 기준을 참조하였다. 본 열차제어시스템 테스팅 자동화 도구는 열차제어시스템 소프트웨어 평가단계에서도 활용될 수 있고 또한 소프트웨어 개발단계에서도 유용하게 활용될 수 있을 것으로 예상된다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.969-973
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• 2005

This paper presents a survey of software reliability modeling and it's application to pre-built software system combined with hardware such as numerical controller based on personal computer systems. Many a systems in these days are much more becoming software intensive and many software intensive systems are safety critical. For this reason, the technique well developed to measure of software reliability is very important for whom to assess such a system. This paper provides a brief idea of method to evaluate such a system's reliability based on hardware performance.

• 대한안전경영과학회지
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• 제7권3호
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• pp.97-108
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• 2005

The issue of using information system to ensure competitive power in the market is rising. The outsourcing methods that entrust activities of information system of companies to other expert agencies are increasing as the enterprises make a lot of efforts to put their resources to their heart of business in the process of adopting information system. Recently, ASP (Application Service Provider) as new information technology outsourcing method appears due to development of network technology and spreading of peculating software. ASP defines as a software leasing service which is supplied through networks instead of purchasing application software with high price. For successful implementation of ASP, it is necessary to develop a certification program to ensure safety and reliability of ASP. This paper provides the safe and reliable certification program for ASP. In order to develop it, the critical issues related to service quality and certification of ASP are identified and then evaluation methodology for ASP certification program is proposed. This paper presents application certification as the part of ASP certification program.

• 중소기업융합학회논문지
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• 제6권1호
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• pp.7-15
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• 2016

현대 사회에서 자동차, 철도, 항공우주, 원자력, 국방 등의 다양한 분야에서 대부분의 장치들이 소프트웨어를 내장하고, 제어용 소프트웨어 시스템이 탑재됨에 따라 소프트웨어의 안전성에 대한 중요도가 높아지고 있다. 다양한 산업 분야에서 소프트웨어가 사용되면서 소프트웨어에 의한 사고의 위협도 높아지기 때문에 소프트웨어 오동작에 의한 안전성 위협이 큰 이슈로 떠오르게 되었다. 소프트웨어의 사고는 사용자의 오조작에 의해서 발생할 수 도 있지만 가장 근본적으로는 설계 과정에서의 안전성에 대한 검증이 제대로 이루어지지 않아서 발생하게 된다. 따라서 본 논문에서는 소프트웨어 개발 프로세스에서 소프트웨어 안전성 분석 및 관리 활동이 어떻게 이루어져야 하는 가를 제시한다. 특별히 프로토타입이나 점진적 개발 프로세스에서의 안전성 분석 및 관리 활동의 적용 방안에 대하여 제시한다.

• Nuclear Engineering and Technology
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• 제33권6호
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• pp.596-604
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• 2001

This paper quantitatively presents the effects of important factors of the probabilistic safety assessment (PSA) of safety-critical digital systems. The result which is quantified using fault tree analysis methodology shows that these factors remarkably affect the system safety. In this paper we list the factors which should be represented by the model for PSA. Based on the PSA experience, we select three important factors which are expected to dominate the system unavailability. They are the avoidance of common cause failure, the coverage of fault tolerant mechanisms and software failure probability. We Quantitatively demonstrate the effect of these three factors. The broader usage of digital equipment in nuclear power plants gives rise to the safety problems. Even though conventional PSA methods are immature for applying to microprocessor-based digital systems, practical needs force us to apply it because the result of PSA plays an important role in proving the safety of a designed system. We expect the analysis result to provide valuable feedback to the designers of digital safety- critical systems.