List of Articles Dependability

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  1 - Selecting preventive and maintenance strategy towards the to improve the assessment indexes of dependability and variability‘s criteria
  changiz Valmmohamadi Javad Sofiyabadi Fakhrodin Lotf Zadeh
  The main purpose of this study was to select a preventive and maintenance net strategy to improve the assessment indexes of dependability and variability in a company providing the gas and oil machinery and equipment for oil and gas production. The research method was a More

  The main purpose of this study was to select a preventive and maintenance net strategy to improve the assessment indexes of dependability and variability in a company providing the gas and oil machinery and equipment for oil and gas production. The research method was an applied and experimental one. To gather the data, the standard daily visit, the cause and effect analysis of using lathe damages of nine machine system during the two study phases were investigated. The research hypotheses, after confirming the normality of the data, were analyzed through mean hypothesis of one population, paired T- test, and between group correlation coefficient. In the first phase, the inclusive net strategy based on mean time for maintenance and net based on dependability were administered. In the second phase the combined net strategy was administered. In both phases the mean time indexes between failure and repair were assessed to see the effects of three compared strategies and the best net strategy was chosen. The results showed that the combined net strategy produced the improvement of the assessment indexes of dependability and variability and also increased the productivity of machinery and equipments.    Manuscript profile
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  2 - Modeling and Evaluation of Stochastic Discrete-Event Systems with RayLang Formalism
  Ali Khalili Mohammad Abdollahi Azgomi
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  3 - Rekiability and validity of the dependability and aggression subscales of the counterproductive behavior index(CBI)
  Mohsen Golparvar H. Reza Oreizie Abolghasem Noori Parviz Sabahi
  This study investigated the reliability and validity of Dependability and Aggression subscales of the CBI (Goodstein & Lanyon, 2002). 172 male workers completed the Buss-Perry Questionnaire (1992), the Applicant Risk Profiler (ARP; Liobet, 2001), and the Neuroticism More

  This study investigated the reliability and validity of Dependability and Aggression subscales of the CBI (Goodstein & Lanyon, 2002). 172 male workers completed the Buss-Perry Questionnaire (1992), the Applicant Risk Profiler (ARP; Liobet, 2001), and the Neuroticism Extraversion Openness Personality Inventory (NEO; Costa & McCrae, 1992). Reliability was assessed using Cronbach’s alpha and test-retest measures. Convergent construct validity was studied, measuring correlations with the Buss-Perry Questionnaire, the Aggressive Tendencies of the CBI and Workplace Compliance subscales of the Applicant Risk Profiler, and the Conscientiousness and Agreeableness subscales of the NEO were used for assessing the divergent construct validity. Reliability of dependability, aggression, and a combination of both subscales were respectively 0.84, 0.86, and 0.92. Test-retest reliability of dependability, aggression, and a combination of both subscales were respectively 0.77, 0.73, and 0.76. Items in the Dependedability and Aggression subscales of CBI were significantly correlated (r = 0.81). Convergent validity indicated significant positive correlation between the Aggression subscales of CBI and the Buss-Perry Questionnaire subscales and correlation between CBI Aggression subscale and the ARP Aggressive Tendencies was 0.58. Divergent validity was 0.37, found by measuring correlation between the CBI Aggression and NEO Agreeableness. The Dependability subscale of CBI was negatively correlated with the conscientiousness subscale of NEO(r = -0.47). Manuscript profile