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Dr Stephan Kolassa

Honorary Researcher

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  1. 2013
  2. Published

    Forecasting with In-Memory Technology

    Januschowski, T., Kolassa, S., Lorenz, M. & Schwarz, C., 2013, In: Foresight: The International Journal of Applied Forecasting. 31, p. 14-20 7 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  3. Published

    N-glycosylation profiling of plasma provides evidence for accelerated physiological aging in post-traumatic stress disorder

    Moreno-Villanueva, M., Morath, J., Vanhooren, V., Elbert, T., Kolassa, S., Libert, C., Bürkle, A. & Kolassa, I.-T., 2013, In: Translational Psychiatry. 3, 5 p., e320.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  4. 2012
  5. Published

    Development of Large-Scale Functional Networks over the Lifespan

    Schlee, W., Leirer, V. M., Kolassa, S., Thurm, F., Elbert, T. & Kolassa, I. T., 1/10/2012, In: Neurobiology of Aging. 33, 10, p. 2411-2421 11 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  6. Published

    Two Notable New Forecasting Texts

    Kolassa, S., 2012, In: Foresight: The International Journal of Applied Forecasting. 27, p. 40-45 6 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  7. Published

    Victims of rape show increased cortisol responses to trauma reminders: A study in individuals with war- and torture-related PTSD

    Gola, H., Engler, H., Schauer, M., Adenauer, H., Riether, C., Kolassa, S., Elbert, T. & Kolassa, I.-T., 2012, In: Psychoneuroendocrinology. 37, 2, p. 213-220 8 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  8. 2011
  9. Published

    Improvement of cognitive function after physical movement training in institutionalized very frail older adults with dementia

    Thurm, F., Scharpf, A., Liebermann, N., Kolassa, S., Elbert, T., Luchtenberg, D., Woll, A. & Kolassa, I. T., 31/12/2011, In: GeroPsych: The Journal of Gerontopsychology and Geriatric Psychiatry. 24, 4, p. 197-208 12 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  10. Published

    Combining exponential smoothing forecasts using Akaike weights

    Kolassa, S., 1/04/2011, In: International Journal of Forecasting. 27, 2, p. 238-251 14 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  11. Published

    Changes in cortical slow wave activity in healthy aging

    Leirer, V. M., Wienbruch, C., Kolassa, S., Schlee, W., Elbert, T. & Kolassa, I.-T., 2011, In: Brain imaging and behavior. 5, 3, p. 222–228 7 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  12. Published

    Percentage Errors Can Ruin Your Day (and Rolling the Dice Shows How)

    Kolassa, S. & Martin, R., 2011, In: Foresight: The International Journal of Applied Forecasting. 23, p. 21-27 7 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  13. Published

    The Business Forecasting Deal

    Kolassa, S., 2011, In: International Journal of Forecasting. 27, 2, p. 631-633 4 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  14. 2010
  15. Published

    Association study of trauma load and SLC6A4 promoter polymorphism in PTSD: evidence from survivors of the Rwandan genocide

    Kolassa, I. T., Ertl, V., Eckart, C., Glockner, F., Kolassa, S., Papassotiropoulos, A., De Quervain, D. & Elbert, T., 1/05/2010, In: Journal of Clinical Psychiatry. 71, 5, p. 543-547 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  16. Published

    Free Open-Source Forecasting Using R

    Kolassa, S. & Hyndman, R. J., 2010, In: Foresight: The International Journal of Applied Forecasting. 17, p. 19-23 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  17. Published

    Hippocampal activity during the transverse patterning task declines with cognitive competence but not with age

    Leirer, V. M., Wienbruch, C., Paul-Jordanov, I., Kolassa, S., Elbert, T. & Kolassa, I. T., 2010, In: BMC Neuroscience. 11, 10 p., 113.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  18. Published

    Spontaneous remission from PTSD depends on the number of traumatic event types experienced

    Kolassa, S., Ertl, V., Eckart, C., Kolassa, S., Onyut, L. P. & Elbert, T., 2010, In: Psychological Trauma: Theory, Research, Practice, and Policy. 2, 3, p. 169-174 6 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  19. Published

    The Risk of Posttraumatic Stress Disorder After Trauma Depends on Traumatic Load and the Catechol-O-Methyltransferase Val158Met Polymorphism

    Kolassa, I. T., Kolassa, S., Ertl, V., Papassotiropoulos, A. & De Quervain, D., 2010, In: Biological Psychiatry. 67, 4, p. 304-308 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  20. 2009
  21. Published

    How to assess forecastability

    Kolassa, S., 2009, In: Foresight: The International Journal of Applied Forecasting. 13, p. 41-45 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  22. Published

    Interpretive bias in social phobia: An ERP study with morphed emotional schematic faces

    Kolassa, I. T., Kolassa, S., Bergmann, S., Lauche, R., Dilger, S. & Miltner, W. H. R., 2009, In: Cognition and Emotion. 23, 1, p. 69-95 27 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  23. Published

    No PTSD-related differences in diurnal cortisol profiles of genocide survivors

    Eckart, C., Engler, H., Riether, C., Kolassa, S., Elbert, T. & Kolassa, I. T., 2009, In: Psychoneuroendocrinology. 34, 4, p. 523-531 9 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  24. 2008
  25. Published

    Can we obtain valid benchmarks from published surveys of forecast accuracy?

    Kolassa, S., 2008, In: Foresight: The International Journal of Applied Forecasting. 11, p. 6-25 20 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  26. 2007
  27. Published

    Advantages of the MAD/Mean ratio over the MAPE

    Kolassa, S., 2007, In: Foresight. 2007, 6, p. 40-43 4 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  28. Published

    Event-related potentials to schematic faces in social phobia

    Kolassa, I. T., Kolassa, S., Musial, F. & Miltner, W. H. R., 2007, In: Cognition and Emotion. 21, 8, p. 1721-1744 24 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  29. Published

    Spider phobics more easily see a spider in morphed schematic pictures

    Kolassa, S., 2007, In: Behavioral and Brain Functions. 2007, 3, 15 p., 59.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  30. 2006
  31. Published

    Event-related potentials when identifying or color-naming threatening schematic stimuli in spider phobic and non-phobic individuals

    Kolassa, I.-T., Musial, F., Kolassa, S. & Miltner, W. H. R., 2006, In: BMC Psychiatry. 6, 12 p., 38.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  32. 2005
  33. Published

    Two-Step Drawing From Urns

    Kolassa, S., 2005, Operations Research Proceedings 2004. Fleurin, H., den Hertog, D. & Kort, P. (eds.). Springer, p. 313-318 6 p. (Operations Research Proceedings).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

  34. 2004
  35. Published

    Multi-Step Shortlisting by Imperfect Experts

    Kolassa, S., 2004, Jena: 3-Hirn-Verlag. 119 p.

    Research output: Book/Report/Proceedings › Book

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