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As an important component of the vacuum system, the performance of Roots Pump affects the reliability of the system. This paper selects the rotor wear fault mode as the research object, based on the establishment of Roots Pump's basic model, through the analysis on the failure mechanism, models the leakage, and finally establishes the Roots Pump's performance degradation model of leakage caused by...
Reliability of regional road network is investigated by simulation in this paper. Considering the task completion of the network in terms of amount and time, two reliability measurements for the regional road network are defined, and a simulation model to evaluate these reliability measurements based on Anylogic is established. This model is applied to a regional road network in Changsha, a big city...
It is the rule rather than the exception that practical network systems possess heterogeneous components. Thus, network invulnerability has been better investigated with colored networks. This survey firstly discusses the basic idea of applying coloring theory to network invulnerability, and then systematically reviews the researches on invulnerability of colored networks in three aspects, including...
The behaviour mismatch analysis is absolutely necessary for guaranteeing the correct composition of web services. In order to improve the reliability of the Web service composition, we present a mismatch detection method which can capture incompatible behavior and timed conflict among multiple asynchronous services. In this paper, we use software architecture description language XYZ/ADL based on...
A circuit model including passive intermodulation source is set up based on Taylor polynomial method. The reverse and forward PIM power is predicted from this model. Superposition of multiple PIM souces is presented. Analysis indicates that the forward PIM measurement gives the worst case performace of a device with multiple PIM sources.
We present the coding tool VPAT (Verbal Protocol Analysis Tool), specifically designed to facilitate model driven analysis of users' verbal data. Such model-driven coding presents challenges in terms of efficiency and reliability. Engineers and researchers need effective means of coding with complex, hierarchical, multi-level coding schemes. VPAT allows input of customizable coding schemes, quick...
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