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The large-scale ontologies are more and more widely used in various fields, some ontologies even have evolved through a number of versions. There is an increasing need for finding a set of metrics to analyze ontology systematically. In this paper, inspired by the concept of ontology metrics at the ontology-level and the class-level, we expand ontology metrics to the property-level and choose well-known...
In managed pressure drilling, there are two main challenges involved. First, the bottomhole pressure and flow rate to be controlled is updated at a low rate, which can be viewed as unmeasured. Second, the drilling process is subject to unknown parameters (e.g., frictions, densities), unmodeled dynamics and noise. To deal with these issues, this paper presents an integrated fast estimation and ℒ1 adaptive...
Current rocket launching may cause high temperature, high pressure and many poisonous gases, which is harmful for the instruments and operators in the launching site. It introduces a new technology of cold emission for the rocket launching based on the technology of electromagnetic inductive launching. It introduces the principle of the system and builds the mathematical model for electromagnetic...
Supply chain management has been commonly implemented in manufacturing management. It has become a new management model. As the source of manufacturing resource, the performance of supplier influences the whole chain directly. So supplier selection has become one of the core steps of supply chain management. This paper spreads out just based on the above background and then it researches on supplier...
Computational aeroacoustics (CAA) has emerged as a tool to complement theoretical and experimental approaches for robust and accurate prediction of sound levels from aircraft airframes and engines. CAA, unlike computational fluid dynamics (CFD), involves the accurate prediction of small-amplitude acoustic fluctuations and their correct propagation to the far field. In that respect, CAA poses significant...
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