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- Abu-Youssef, Morsy A. M., et al.
(author)
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Topology Analysis Reveals Supramolecular Organisation of 96 Large Complex Ions into one Geometrical Object
- 2016
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In: CrystEngComm. - : Royal Society of Chemistry (RSC). - 1466-8033. ; 18:11, s. 1883-1886
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Journal article (peer-reviewed)abstract
- It is shown that the highly complex crystal structure of [Ag(4-(pyrrolidin-1-yl)pyridine)2]NO3·1/2H2O, 1, with 12 symmetry-independent Ag+ ions and 96 units of complex ions in a unit cell can be understood by the ubiquitous srs topology, reducing thousands of atom positions into a single geometrical object in one go.
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- Chamorro, Harold R., et al.
(author)
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Impact of Non-Synchronous Generation on Transmission Oscillations Paths
- 2018
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In: 2018 IEEE Texas Power and Energy Conference (TPEC). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781538610060
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Conference paper (peer-reviewed)abstract
- The large scale penetration of non-synchronous generation has been causing several impacts on the power systems dynamics. The low-frequency oscillations affect the power exchanged along the transmission lines/corridors. This paper uses the Multi-Prony Analysis mode estimation technique to monitor and suggest the dominant oscillation modes which can be useful for wide-area control purposes. Moreover, the oscillation modes are also monitored under gradual cases of non-synchronous generation integration in the system. The methodology is applied to two different test transmission systems: i) the two area system and, ii) the Nordic 32 system. The results illustrate the similarity and differences in the scenarios proposed.
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- Crnkovic, Ivica, et al.
(author)
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On the Use of Component-Based Principles and Practices for Architecting Cyber-Physical Systems
- 2016
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In: Proceedings - 2016 19th International ACM SIGSOFT Symposium on Component-Based Software Engineering, CBSE 2016. - 9781509025695 ; , s. 23-32
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Conference paper (peer-reviewed)abstract
- By focussing on Cyber Physical Systems (CPS), this paper investigates how component-based principles and practices are used and support the activity of architecting CPS. For doing so, by running a systematic process, we selected 49 primary studies from the most important publishers search engines. Those papers have been analyzed and their contents classified according to the Classification Framework for Component Models proposed in our previous work. The results show that the main concerns handled by CPS component models are those of integration, performance, and maintainability. The instruments to satisfy those concerns, while architecting CPS, are ad-hoc software/system architecture, model-based approaches, architectural and component languages, and design. The IEC 61499 standard with its functions block is remarkably used to drive the work on six papers. Java is the most frequently used programming language used for implementing the components. Components are deployed mostly at compile time. Interfaces are almost equally distributed into port-based and operation-based. Overall, the results show a transition of technologies and approaches used in Embedded Systems to CPS, but still lacking methods for integrated architecting, in particular in incremental development.
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