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The well-known and commonly accepted finite dimensional model qualitatively describing surge instabilities in centrifugal (and axial) compressors is considered. The problem of global output feedback stabilization for it is solved. The solution relies on two new criteria for global stability proposed for a class of nonlinear systems exploiting quadratic constraints for infinite sector nonlinearitie
The current study aims to investigate the reliability for serviceability design for flexural members made of different materials (steel, concrete and timber) according to the specifications of the current versions of Eurocodes. Second-order reliability method is applied to determine the reliability index for different design situations for simply supported beams subjected to bending. The character
The aim of this paper is to present trends, similarities and differences in the usage of graphical languages at the level of Process Control, manufacturing Operations and Business Systems. The paper also gives ideas of how a common language could be used to increase the integration between the three levels and what advantages this could bring to its user.
Anaerobic digestion would enable the energy potential of agricultural crop residues such as ley crops, sugar beet tops and straw to be harnessed in Sweden. These residues are so spread out that full utilisation of the potential by centralised slurry-based technology is difficult, its appearing that simple but effective high-solids reactor systems have a better chance of being economically viable o
In the practice of modern international law, if a certain understanding is advanced as the correct interpretation of a treaty provision, the proposition is assessed using the rules of interpretation laid down in the 1969 Vienna Convention on the Law of Treaties, Articles 31–33. This article is concerned with the relationship held in such an interpretation process between the preparatory work of a
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