• ETRI Journal
• /
• 제35권1호
• /
• pp.109-119
• /
• 2013

Static testing of analog-to-digital (A/D) and digital-to-analog (D/A) converters becomes more difficult when they are embedded in a system on chip. Built-in self-test (BIST) reduces the need for external support for testing. This paper proposes a new static BIST structure for testing both A/D and D/A converters. By sharing test circuitry, the proposed BIST reduces the hardware overhead. Furthermore, test time can also be reduced using the simultaneous test strategy of the proposed BIST. The proposed method can be applied in various A/D and D/A converter resolutions and analog signal swing ranges. Simulation results are presented to validate the proposed method by showing how linearity errors are detected in different situations.

• 산업경영시스템학회지
• /
• 제8권12호
• /
• pp.119-125
• /
• 1985

It is very important to assure the software quality. The static and dynamic testing are to be performed on the program to find some error in it, and it's purposes are to assure the software quality with cost-effectiveness. For it we use the automated tool. In this paper, it suggest the design of the software tool for COBOL static testing.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1999년도 제14차 학술회의논문집
• /
• pp.281-283
• /
• 1999

This topic presents an inductor short turn testing. From the rudimentary principles, the quality factor(Q) decreases due to inductor short turn. Frequency response varies because of the variation of circuit inductance and resistance. In general, short turn circuit testing is performed by comparing the ratio of an inductance and resistance of inductor in that particular circuit. An alternative method can be done by considering the response of second order circuit which can give both dynamic and static testing, whereas static testing give an error results not more than 2 turns. For dynamic testing, the result is more accurate, which can test fur the short turn number form 1 turn onward.

• 전기학회논문지P
• /
• 제58권2호
• /
• pp.108-115
• /
• 2009

Recent advances in computer technology have brought more dependence on software to train control systems. Hence, the safety assurance of the vital software running on the railway system is very critical task and yet, not many works have been done. While much efforts have been reported to improve electronic hardware's safety, not so much systematic approaches to evaluate software's safety, especially for the vital software running on board train controllers. In this paper, we have developed the static software testing tool for railway signaling, especially Fagan Inspection module and checklists supporting module. This static testing tool for railway signaling can be utilized at the assessment phase, and also usefully at the software development stage also. It is anticipated that it will be greatly helpful for the evaluation on the software for railway signalling system.

• 한국정보과학회논문지:소프트웨어및응용
• /
• 제34권3호
• /
• pp.212-218
• /
• 2007

아직까지 소프트웨어 개발조직에서는 사전검증 활동 및 충분한 테스트 설계가 수행되지 않고 있으며, 따라서 개발 초기에 식별, 수정될 수 있는 결함들까지 테스트시 검출되기 때문에 투입 노력 대비 테스트의 효율성은 떨어진다. 이러한 문제의식을 바탕으로 본 논문은 구현이전단계에서의 사전검증이 수행 되지 않고, 테스트 케이스 설계가 충분히 진행되지 않은 경우에 테스트의 효율성을 향상시킬 수 있는 방법을 실사례를 통해 제안하고 있다. 테스트 단계에서의 코드 리뷰와 코드 품질 분석을 통해 테스트 우선순위 선정, 테스트별 테스트 케이스 설계 등의 주요 활동과 테스트팀과 개발팀과의 역할을 구체적으로 제시한다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제17권6호
• /
• pp.1689-1705
• /
• 2023

To deal with the potential XSS vulnerabilities in the source code of the power communication network, an XSS vulnerability detection method combining the static analysis method with the dynamic testing method is proposed. The static analysis method aims to analyze the structure and content of the source code. We construct a set of feature expressions to match malignant content and set a "variable conversion" method to analyze the data flow of the code that implements interactive functions. The static analysis method explores the vulnerabilities existing in the source code structure and code content. Dynamic testing aims to simulate network attacks to reflect whether there are vulnerabilities in web pages. We construct many attack vectors and implemented the test in the Selenium tool. Due to the combination of the two analysis methods, XSS vulnerability discovery research could be conducted from two aspects: "white-box testing" and "black-box testing". Tests show that this method can effectively detect XSS vulnerabilities in the source code of the power communication network.

• 산업공학
• /
• 제25권4호
• /
• pp.416-421
• /
• 2012

One of the activities to improve software quality in ISO 26262 is to apply the design principles for software unit design and implementation mentioned in ISO 26262-6, including the evaluation activity. Before evaluation activity, the tool is compared and selected for evaluation. Because the results of the tool a company selected might have an effect on product quality. In this paper, we suggest the method to compare industrial static analysis tools with some of "MISRA C : 2004 Exemplar Suite" and all lessons learned from comparing tools are described. The result on comparison shows that we just couldn't rely on a result of Static Analysis Tool and need to have another appropriate processes and guidelines to evaluate a software.

• 한국정밀공학회지
• /
• 제18권11호
• /
• pp.34-41
• /
• 2001

This study is to investigate the energy absorption characteristics of CFRP(Carbon-Fiber Reinforced Plastics) tubes on static and dynamic tests. Axial static compression tests have been carried out using the static testing machine(Shin-gang buckling testing machine) and dynamic compression tests have been utilized using an vertical crushing testing machine. When such tubes are subjected to crushing loads, the response is complex and depends on the interaction between the different mechanisms that could control the crushing process. The collapse characteristics and energy absorption have been examined for various tubes. Energy absorption of the tubes are increased as changes in the lay-up which may increase the modulus of tubes. The results have been varied significantly as a function of ply orientation and interlaminar number.

• 한국추진공학회:학술대회논문집
• /
• 한국추진공학회 2003년도 제21회 추계학술대회 논문집
• /
• pp.181-184
• /
• 2003

메인모타 추진제의 연소속도를 예측하기 위하여 표준모타를 제작하고 지상연소시험을 수행하였다. 이를 위하여 중, 소형 모타의 시험에 적합한 지상연소시험장을 구축하고 경량화된 6 inch 급의 표준모타를 개발하여 여러 차례의 시험에 적용하였고, 메인모타의 연소속도와 비교하였다. 그 결과 표준모타를 이용하는 방법이 기존의 연소속도 측정 방법에 비해 메인모타의 연소속도를 비교적 잘 반영하는 것으로 나타나, 앞으로의 추진제 개발 활동 및 양산품의 품질보증 활동에 적극 활용할 계획이다.

• 한국자동차공학회논문집
• /
• 제9권6호
• /
• pp.195-200
• /
• 2001

Composites have wide applications in aerospace vehicles and automobiles because of the inherent flexibility in their design for improved material properties. Composite tribes in particular, are potential candidates for their use as energy absorbing elements in crashworthiness applications due to their high specific energy absorbing capacity and the stroke efficiency. Their failure mechanism however is highly complicated and rather difficult to analyze. This includes fracture in fibres, in the matrix and in the fibre-matrix interface in tension, compression and shear. The purpose of this study is to investigate the energy absorption characteristics of CFRP(Carbon Fiber Reinforced Plastics) tubes on static and impact tests. Static compression tests have been carried out using the static testing machine and impact tests have been carried out using the vertical crushing testing machine. Interlaminar number affect the energy absorption capability of CFRP tubes. Also, theoretical and experimental have the same value.