• Title/Summary/Keyword: in-service testing

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Performance Testing of Composite Web-Service with Aspect-Based WS-BPEL Extension

  • Kim, Jong-Phil;Sung, Dong-Hyuk;Hong, Jang-Eui
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.5 no.10
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    • pp.1841-1861
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    • 2011
  • The advance in Service-Oriented Architecture (SOA) and web services has led to the development of new types of a system in which heterogeneous service components can connect and compose to solve a complex business problem. In the SOA, even though these service components are valid in their functionality, there is a need to test their behaviors when those services are composited. In recent years, WS-BPEL has received a wide acceptance as a means of integrating distributed service components. To test the composite service, the existing testing techniques have been focused on the functional features based on the WS-BPEL process. However as SOA approach is applying to real-time software development, the performance of composite service becomes one of important issues. This paper proposes a technique to the performance testing of a composite service with WS-BPEL extension which combined with the concept of aspect. Our WS-BPEL extension has been made towards annotating aspect component which is measuring the response time of the composite service. This paper also explains the procedure of performance testing with on-line transaction system. Our technique can apply to choose an adequate component in service composition with considering the performance among several candidate web service components.

Reignition system for synthetic short-circuit test (합성단락시험용 재점호장치)

  • Park, Seung-Jae;Kim, Maeng-Hyun;Kang, Young-Sig;Shin, Young-June;Koh, Heui-Sek
    • Proceedings of the KIEE Conference
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    • 2000.07c
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    • pp.1856-1858
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    • 2000
  • This paper describes the principles of reignition system which has newly been developed and used as KERI's high power testing facilities. Synthetic short-circuit testing method is generally adopted to perform the short-circuit test of the ultra high-voltage circuit breakers, which consists of two separated sources such as the current source from short-circuit generator and the voltage source from charged energy in capacitor. And, in case of synthetic short-circuit test, it will be necessary to use the reignition system in order to extending the arcing time of the circuit breaker and provide the arc energy equivalent to the direct testing method.

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Development of a Multiplex RT-PCR for the Simultaneous Detection of Three Viruses in Cherry Plants

  • Park, Chung Youl;Park, Jeongran;Lee, Geunsik;Yi, Seung-In;Kim, Byeong Hoon;Eom, Jung Sik;Lee, Som Gyeol;Kim, Hongsup
    • Research in Plant Disease
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    • v.24 no.3
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    • pp.233-236
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    • 2018
  • A multiplex RT-PCR (mRT-PCR) assay was developed for the detection of the recently reported viruses, Cherry virus A (CVA), Little cherry virus 1 (LChV-1), and Little cherry virus 2 (LChV-2), in cherry plants in Korea. Eight sets of primers were designed for each virus and their specificity was tested by using various combinations of mixed primer sets. From the designed primer sets, one combination was selected and further evaluated to estimate the optimum temperature and detection limits of the mRT-PCR. A newly developed mRT-PCR assay was also tested using 20 cherry samples collected in the field. This mRT-PCR assay may be a useful tool for field surveys of diseases and the rapid detection of these three viruses in cherry plants.

Importance Analysis of In-Service Testing Components for Ulchin Unit 3 Using Risk-Informed In-Service Testing Approach

  • Kang, Dae-il;Kim, Kil-yoo;Ha, Jae-joo
    • Nuclear Engineering and Technology
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    • v.34 no.4
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    • pp.331-343
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    • 2002
  • We performed an importance analysis of In-Service Testing (157) components for Ulchin Unit 3 using the integrated evaluation method for categorizing component safety significance developed in this study. The developed method is basically aimed at having a PSA expert perform an importance analysis using PSA and its related information. The importance analysis using the developed method is initiated by ranking the component importance using quantitative PSA information. The importance analysis of the IST components not modeled in the PSA is performed through the engineering judgment, based on the expertise of PSA, and the quantitative and qualitative information for the 157 components. The PSA scope for importance analysis includes not only Level 1 and 2 internal PSA but also Level 1 external and shutdown/low power operation PSA. The importance analysis results of valves show that 167 (26.55%) of the 629 IST valves are HSSCs and 462 (73.45%) are LSSCs. Those of pumps also show that 28 (70%)of the 40157 pumps are HSSCs and 12 (30%) are LSSCs.