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Sökning: WFRF:(BERGSTROM L) > (2000-2004)

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1.
  • Andres, E., et al. (författare)
  • Selected recent results from AMANDA
  • 2001
  • Ingår i: ICHEP 2000. Proceedings of the 30th International Conference on High Energy Physics. - : World Scientific. ; , s. 965-968
  • Konferensbidrag (refereegranskat)abstract
    • We present a selection of results based on data taken in 1997 with the 302-PMT Antarctic Muon and Neutrino Detector Array-B10 ("AMANDA-B10") array. Atmospheric neutrinos created in the northern hemisphere are observed indirectly through their charged current interactions which produce relativistic, Cherenkov-light-emitting upgoing muons in the South Pole ice cap. The reconstructed angular distribution of these events is in good agreement with expectation and demonstrates the viability of this ice-based device as a neutrino telescope. Studies of nearly vertical upgoing muons limit the available parameter space for WIMP dark matter under the assumption that WIMPS are trapped in the earth's gravitational potential well and annihilate with one another near the earth's center.
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2.
  • Karle, A., et al. (författare)
  • Observation of high energy atmospheric neutrinos with AMANDA
  • 2000
  • Ingår i: AIP Conference Proceedings. - : American Institute of Physics (AIP). ; , s. 823-827
  • Konferensbidrag (refereegranskat)abstract
    • In 1997 the Antarctic Muon and Neutrino Detector Array (AMANDA) started operating with 10 strings. In an analysis of data taken during the first year of operation 188 atmospheric neutrino candidates were found. Their zenith angle distribution agrees with expectations based on Monte Carlo simulations. A preliminary upper limit is given on a diffuse flux of high energy neutrinos of astrophysical origin.
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  • Andersson, Gerhard, et al. (författare)
  • Delivering cognitive behavioural therapy for mild to moderate depression via the Internet : Predicting outcome at 6-month follow-up
  • 2004
  • Ingår i: Verhaltenstherapie (Basel). - : S. Karger AG. - 1016-6262 .- 1423-0402. ; 14:3, s. 185-189
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Mild to moderate depression has been successfully treated with cognitive-behavioural (CBT) bibliotherapy, including minimal therapist contact. More recently, the Internet has been used to deliver the treatment, with obvious gains in terms of cost reduction and increased accessibility. In the present study we analysed pre-treatment predictors of improvement following Internet-based self-help treatment of mild to moderate depression. Patients and Methods: Included were 71 participants from a randomised trial who completed a 6-month follow-up. Change indexes were calculated from the Beck Depression Inventory (BDI) and the Montgomery Åsberg Depression Rating Scale (MADRS). Results: In line with the literature on depression, the number of previous episodes of depression was negatively associated with improvement after treatment. Follow-up scores on the BDI and MADRS were associated with pre-treatment levels of depression, anxiety and low levels of quality of life. Discussion: As indicated by traditional psychotherapy studies, finding predictors of outcome is a difficult task. Patients with repeated episodes of depression might benefit less from self-help over the Internet, but as the correlation is weak, no firm conclusions can be drawn.
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  • Resultat 1-10 av 42

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