Helle Sørensen

Helle Sørensen

Professor

ORCID: 0000-0001-5273-6093

Publication year:
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1 - 25 out of 79Page size: 25
  1. 2000

  2. Inference for Diffusion Processes and Stochastic Volatility Models

    Sørensen, Helle, 2000, Copenhagen: H.C.Ø.-Tryk. 164 p.

    Research output: Book/Report › Ph.D. thesis › Research

  3. 2001

  4. Discretely Observed Diffusions: Approximation of the Continuous-time Score Function

    Sørensen, Helle, 2001, In: Scandinavian Journal of Statistics. 28, 1, p. 113-121 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. 2002

  6. Estimation of diffusion parameters for discretely observed diffusion processes

    Sørensen, Helle, 2002, In: Bernoulli. 8, 4, p. 491-508 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. 2003
  8. Published

    Simulated likelihood approximations for stochastic volatility models

    Sørensen, Helle, 2003, In: Scandinavian Journal of Statistics. 30, 2, p. 257-276 20 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. 2004
  10. Published

    Mixtures of toxicants

    Cedergreen, Nina, Skovgaard, I. M., Streibig, Jens Carl & Sørensen, Helle, 2004, Symposium i anvendt statistik: 26. årgang, 2004. red. Anders Holm ed. Museum Tusculanum, Vol. 26. p. 210-219 10 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  11. Published

    Parametric inference for diffusion processes observed at discrete points in time: a survey

    Sørensen, Helle, 2004, In: International Statistical Review. 72, 3, p. 337-354 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. 2007
  13. Published

    A note on R: linear models and models with random effects

    Martinussen, Torben, Skovgaard, I. M. & Sørensen, Helle, 2007, Frederiksberg: Department of Natural Sciences, University of Copenhagen. 60 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  14. Published

    An isobole-based statistical model and test for synergism/antagonism in binary mixture toxicity experiments

    Sørensen, Helle, Cedergreen, Nina, Skovgaard, I. M. & Streibig, Jens Carl, 2007, In: Environmental and Ecological Statistics. 14, 4, p. 383-397 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Is mixture toxicity measured on a biomarker indicative of what happens on a population level? a study with Lemna minor

    Cedergreen, Nina, Abbas Poor, M., Sørensen, Helle & Streibig, Jens Carl, 2007, In: Ecotoxicology and Environmental Safety. 67, 3, p. 323-332 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Lecture notes for applied statistics

    Tolver, Anders & Sørensen, Helle, 2007, Frederiksberg: Department of Natural Sciences, University of Copenhagen. 174 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  17. Published

    Reproducibility of binary-mixture toxicity studies

    Cedergreen, Nina, Kudsk, P., Kopp Mathiassen, S., Sørensen, Helle & Streibig, Jens Carl, 2007, In: Environmental Toxicology and Chemistry. 26, 1, p. 149-156 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. 2008
  19. Published

    A review of independent action compared to concentration addition as reference models for mixtures of compounds with different molecular target sites

    Cedergreen, Nina, Christensen, A. M., Kamper, A., Kudsk, P., Matthiassen, S. K., Streibig, Jens Carl & Sørensen, Helle, 2008, In: Environmental Toxicology and Chemistry. 27, 7, p. 1621-1632 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Can the effect of ternary mixtures be predicted from binary mixture toxicity results?

    Svendsen, C., Cedergreen, Nina, Kamper, A. & Sørensen, Helle, 2008. 2 p.

    Research output: Contribution to conference › Conference abstract for conference › Research

  21. Published

    Hormesis in Mixtures - Can it be Predicted?

    Belz, R., Cedergreen, Nina & Sørensen, Helle, 2008. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research

  22. Published

    Hormesis in mixtures - can it be predicted?

    Belz, R. G., Cedergreen, Nina & Sørensen, Helle, 2008, In: Science of the Total Environment. 404, 1, p. 77-87 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Independent action compared to concentration addition as reference models for mixtures of compounds with different molecular target sites

    Cedergreen, Nina, Christensen, A. M., Kamper, A., Kudsk, P., Streibig, Jens Carl & Sørensen, Helle, 2008, SETAC Europe 18th Annual Meeting: Extended abstracts. Society of Environmental Toxicology and Chemistry, p. 243-244 2 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  24. Published

    Lecture notes for "Statistisk Dataanalyse 1"

    Ekstrøm, Claus Thorn & Sørensen, Helle, 2008, Department of Natural Sciences, University of Copenhagen. 204 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  25. Published

    Small sample distribution of the likelihood ratio test in the random effects model

    Sørensen, Helle, 2008, In: Journal of Statistical Planning and Inference. 138, 6, p. 1605-1614 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. 2009
  27. Published

    A new mathematical model for combining growth and energy intake in animals: the case of the growing pig

    Strathe, A. B., Sørensen, Helle & Danfær, A. C., 2009, In: Journal of Theoretical Biology. 261, 2, p. 165-175 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Canopy photosynthesis and time-of-day application of supplemental light

    Markvart, J., Rosenqvist, Eva, Sørensen, Helle, Ottosen, C. & Aaslyng, J. P. M., 2009, In: HortScience. 44, 5, p. 1284-1290 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Introduction to statistical data analysis for the life sciences

    Ekstrøm, Claus Thorn & Sørensen, Helle, 2009, Department of Basic Sciences and Environment, University of Copenhagen. 334 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  30. 2010

  31. A multilevel nonlinear mixed-effects approach to model growth in pigs

    Strathe, A. B., Danfær, A. C., Sørensen, Helle & Kebreab, E., 2010, In: Journal of Animal Science. 88, p. 638-649 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    A multivariate nonlinear mixed effects method for analyzing energy partitioning in growing pigs

    Strathe, A. B., Danfær, A. C., Chwalibog, André, Sørensen, Helle & Kebreab, E., 2010, In: Journal of Animal Science. 88, 7, p. 2361-2372 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    A random effects model for binary mixture toxicity experiments

    Sørensen, Helle, Cedergreen, Nina & Streibig, Jens Carl, 2010, In: Journal of Agricultural, Biological, and Environmental Statistics. 15, 4, p. 562-577 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Agreement between accelerometric symmetry scores and clinical lameness scores during experimentally induced transient distension of the metacarpophalangeal joint in horses

    Thomsen, M. H., Persson, A. B., Tolver, Anders, Sørensen, Helle & Andersen, P. H., 2010, In: Equine Veterinary Journal. 42, Suppl. 38, p. 510-515 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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