Temat: fault injector - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: How validation can help in testing business processes orchestrating web services
Autorzy:: Grela, D.
Sapiecha, K.
Strug, J.
Powiązania:: https://bibliotekanauki.pl/articles/106156.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:: BPEL
validation
testing
SOA
Software Fault Injector
Opis:: Validation and testing are important in developing correct and fault free SOA-based systems. BPEL is a high level language that makes it possible to implement business processes as an orchestration of web services. In general, the testing requires much more test scenarios than the validation. However, in the case of BPEL processes, which have very simple and well structured implementation, test scenarios limited to the validation may also be efficient. The paper describes an experiment that aims at answering a question whether or not the validation test scenarios are also adequate for testing an implementation of BPEL processes. The experiment employs a Software Fault Injector for BPEL Processes that is able to inject faults when the test scenarios are running. The results of the experiment seem very promising. Hence, it seems that validation tests might give astrong support for testing.
Źródło:: Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica; 2013, 13, 1; 23-35
1732-1360
2083-3628
Pojawia się w:: Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: FIM-SIM: Fault Injection Module for CloudSim Based on Statistical Distributions
Autorzy:: Nita, M.-C.
Pop, F.
Mocanu, M.
Cristea, V.
Powiązania:: https://bibliotekanauki.pl/articles/308866.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: cloud simulation
continuous distributions
discrete distributions
fault injector
Opis:: The evolution of ICT systems in the way data is accessed and used is very fast nowadays. Cloud computing is an innovative way of using and providing computing resources to businesses and individuals and it has gained a faster popularity in the last years. In this context, the user’s expectations are increasing and cloud providers are facing huge challenges. One of these challenges is fault tolerance and both researchers and companies have focused on finding and developing strong fault tolerance models. To validate these models, cloud simulation tools are used as an easy, flexible and fast solution. This paper proposes a Fault Injector Module for CloudSim tool (FIM-SIM) for helping the cloud developers to test and validate their infrastructure. FIM-SIM follows the event- driven model and inserts faults in CloudSim based on statistical distributions. The authors have tested and validated it by conducting several experiments designed to highlight the statistical distribution influence on the failures generated and to observe the CloudSim behavior in its current state and implementation.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 4; 14-23
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Fault diagnosis of me marine diesel engine fuel injector with novel IRCMDE method
Autorzy:: Shi, Qingguo
Hu, Yihuai
Yan, Guohua
Powiązania:: https://bibliotekanauki.pl/articles/34608122.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: marine diesel engine
fuel injector
improved refined composite multi-scale dispersion entropy
fault diagnosis
Opis:: As an important component of the fuel injection system, the fuel injector is crucial for ensuring the power, economy, and emissions for a whole ME (machine electronically-controlled) marine diesel engine. However, injectors are most prone to failures such as reduced pressure at the opening valve, clogged spray holes and worn needle valves, because of the harsh working conditions. The failure characteristics are non-stationary and non-linear. Therefore, to efficiently extract fault features, an improved refined composite multi-scale dispersion entropy (IRCMDE) is proposed, which uses the energy distribution of sampling points as weights for coarse-grained calculation, then fast correlation-based filter (FCBF) and support vector machine (SVM) are used for feature selection and fault classification, respectively. The experimental results from a MAN B&W 6S35ME-B9 marine diesel engine show that the proposed algorithm can achieve 92.12% fault accuracy for injector faults, which is higher than multiscale dispersion entropy (MDE), refined composite multiscale dispersion entropy (RCMDE) and multiscale permutation entropy (MPE). Moreover, the experiment has also proved that, due to the double-walled structure of the high-pressure fuel pipe, the fuel injection pressure signal is more accurate than the vibration signal in reflecting the injector operating conditions.
Źródło:: Polish Maritime Research; 2023, 3; 96-110
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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