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Search: WFRF:(Robin Angelique)

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1.
  • Andrikopoulos, Georgios, et al. (author)
  • Pneumatic artificial muscles: A switching Model Predictive Control approach
  • 2013
  • In: Control Engineering Practice. - : Elsevier BV. - 0967-0661 .- 1873-6939. ; 21:12, s. 1653-1664
  • Journal article (peer-reviewed)abstract
    • In this article, a switching Model Predictive Controller (sMPC) for a Pneumatic Artificial Muscle (PAM) is presented. The control scheme is based on a switching PieceWise Affine (PWA) system model approximation that is able to capture the high nonlinearities of the PAM, while improving the overall model accuracy, and is composed of: a) a feed-forward term regulating control input at specific reference set-points, and b) a switching Model Predictive Controller handling any deviations from the system’s equilibrium points. Extended experimental studies are being presented that prove the overall scheme’s efficiency.
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  • Galloway, Aaron W. E., et al. (author)
  • Diet-specific biomarkers show that high-quality phytoplankton fuels herbivorous zooplankton in large boreal lakes
  • 2014
  • In: Freshwater Biology. - : Wiley. - 0046-5070 .- 1365-2427. ; 59:9, s. 1902-1915
  • Journal article (peer-reviewed)abstract
    • 1. The zooplankton is a key link in the transfer of energy from primary producers up through aquatic food webs. Previous efforts to quantify the importance of basal resources to aquatic consumers have used stable isotopes (SI) and simple ternary models, including only 'bulk' phytoplankton, bacteria or terrestrial particulate organic matter (t-POM). 2. We used a novel Bayesian mixing model based on fatty acids (FA) to quantify the dietary assimilation of seven basal resources, including five phytoplankton groups, pelagic bacteria and t-POM, to Cladocera in large boreal lakes in Finland. To account for trophic enrichment of FA from the diet to consumers, we parameterised the model with a resource library, from many feeding trials, consisting of Daphnia magna fed 22 diverse basal taxa. 3. The results of the feeding trials show that the distinctive FA profiles of algal groups are transferred to consumers. Moreover, the large number of FA variables (n = 22) used in the model avoids the limitations of underdetermined mixing problems, common to SI modelling, in cases when the number of resources outnumbers the tracer variables. 4. We show that cladocerans were generally supported by phytoplankton (86-94%), with little use of t-POM (1-9%) and bacteria (1-3%). Cladocerans used primarily high-quality phytoplankton (cryptophytes, diatoms and dinoflagellates) in both summer (51 +/- 22%) and autumn (79 +/- 12%), and the relative importance of medium-quality resources (cyanobacteria, chlorophytes and chrysophytes) declined from 37 +/- 23% in the summer to 8 +/- 2% in the autumn. 5. High-quality resources, rich in essential biochemical compounds, are critical in fuelling food webs in large lakes, even those with high concentrations of allochthonous organic matter.
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  • Aad, G., et al. (author)
  • 2012
  • In: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :12
  • Journal article (peer-reviewed)
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  • Result 1-6 of 6

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