Search for dissertations about: "DST"

Showing result 6 - 10 of 25 swedish dissertations containing the word DST.

  2. 6. Modeling of Unsteady Flow Effects in Throughflow Calculations

    Author : Magnus Stridh; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; rotor-stator interaction; mixing-plane; linear Navier-Stokes; cascade; turbomachinery; transport equation; Linear harmonic; compressor; throughflow; turbine; Deterministic stress terms;

    Abstract : In this work an evaluation of a deterministic stress transport model and a linearized Navier-Stokes harmonic approach for including unsteady effects in the steady mixing-plane computations of a multistage transonic compressor has been performed. The results of these two models are compared with those of time-average time-accurate solutions. READ MORE

  4. 7. Affective disorders : multivariate investigations of clinical and biological variables

    Author : Björn Wahlund; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Affective disorders; psychiatric symptoms; classification; unipolardepression; bipolar disorder; cortisol; melatonin; monoamine oxidase; principle componentanalysis.;

    Abstract : This thesis is a methodological and clinical investigation of patients with affective disorders. The goal of the study was to determine the extent to which biological and clinical measures may cluster clinical subpopulations. Analytical and statistical procedures were applied for this purpose. READ MORE

  5. 8. The use of a prehospital decision system in the emergency medical service : the acute chain for geriatric patients

    Author : Veronica Vicente; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: The objective of this organisational study was to create and evaluate, for use by the prehospital emergency nurse (PEN), a Prehospital Decision System (PDS) and a decision support tool (DST), to safely steer geriatric patients to optimal healthcare in Stockholm, Sweden. Aim: The overall aim was to optimise the acute emergency chain to ensure that elderly persons ended up at the optimal healthcare based on their medical needs. READ MORE

  6. 9. Space Weather Physics, Prediction and classification of solar wind structures and geomagnetic activity using artificial neural networks

    Author : Peter Wintoft; Astronomi - Genomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomi; cosmic chemistry; space research; Astronomy; solar magnetic fields; space weather; solar wind; magnesphere; artificial neural networks; geomagnetic activity; rymdvetenskap; kosmisk kemi; Fysicumarkivet A:1997:Wintoft;

    Abstract : This thesis concerns the application of artificial neural network techniques to space weather physics. The networks applied include multi-layer error-backpropagation, radial basis function, and self-organized maps. READ MORE

  7. 10. Neuroendocrine studies in suicide attempters and in hypersexual disorder

    Author : Andreas Chatzittofis; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Early life adversity is associated with increased risk of high psychiatric disease, suicidal behavior as well as risky sexual behavior in adulthood. Altered functioning of several neurobiological systems, like the serotonergic system and the hypothalamic-pituitary-adrenal axis associated with suicidal behavior, may stem from both genetic and developmental causes. READ MORE