SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Grafström P.) srt2:(2010-2014)"

Search: WFRF:(Grafström P.) > (2010-2014)

  • Result 1-7 of 7
Sort/group result
   
EnumerationReferenceCoverFind
1.
  • Aad, G., et al. (author)
  • 2011
  • Journal article (peer-reviewed)
  •  
2.
  •  
3.
  •  
4.
  • Aad, G, et al. (author)
  • 2014
  • In: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 113:17
  • Journal article (peer-reviewed)
  •  
5.
  •  
6.
  • Grafström, Anton, et al. (author)
  • Why well spread probability samples are balanced
  • 2013
  • In: Open Journal of Statistics. - : Scientific Research Publishing. - 2161-718X .- 2161-7198. ; 3:1, s. 36-41
  • Journal article (peer-reviewed)abstract
    • When sampling from a finite population there is often auxiliary information available on unit level. Such information can be used to improve the estimation of the target parameter. We show that probability samples that are well spread in the auxiliary space are balanced, or approximately balanced, on the auxiliary variables. A consequence of this balancing effect is that the Horvitz-Thompson estimator will be a very good estimator for any target variable that can be well approximated by a Lipschitz continuous function of the auxiliary variables. Hence we give a theoretical motivation for use of well spread probability samples. Our conclusions imply that well spread samples, combined with the HorvitzThompson estimator, is a good strategy in a varsity of situations.
  •  
7.
  • Lundström, Niklas L. P., et al. (author)
  • Small shape deviations causes complex dynamics in large electric generators
  • 2014
  • In: European Physical Journal. - : EDP Sciences. - 1286-0042 .- 1286-0050. ; 66:2
  • Journal article (peer-reviewed)abstract
    • We prove that combinations of small eccentricity, ovality and/or triangularity in the rotor and stator can produce complex whirling motions of an unbalanced rotor in large synchronous generators. It is concluded which structures of shape deviations that are more harmful, in the sense of producing complex whirling motions, than others. For each such structure, we derive simplified equations of motions from which we conclude analytically the relation between shape deviations and mass unbalance that yield non-smooth whirling motions. Finally we discuss validity of our results in the sense of modeling of the unbalanced magnetic pull force
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-7 of 7

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view