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In the drying section of a paper machine, steam heated cylinders are used to control the moisture of the produced paper. In previous work it has been shown that the dynamics from the steam valve to the steam pressure in the cylinder can be described by a linear second order black box process model. In this paper an equivalent model based on first principles is presented. The foundation of this mod
I samband med de nya läroplanerna i religionskunskap för grundskolan och gymnasiet har religionen kristendom kommit att fortsatt ha en särställning, trots att detta inte var inskrivet i Skolverkets förarbete. Kristendom är den enda religion som explicit skrivs ut i läroplanerna och därmed ställs specifika krav på lärare i religionskunskap. Undervisning om kristendom har alltid funnits med i läraru
Popular Abstract in Swedish Summary in Swedish Populärvetenskaplig sammanfattning Neuroblastom uppstår ur omogna nervceller i binjurarna eller i nervvävnaden bredvid ryggraden och är den vanligaste extrakraniala solida tumörformen hos barn. Varje år drabbas ca 10-15 barn i Sverige och sjukdomen uppkommer vanligast hos barn under 4 år. Trots enorma framgångar med behandlingsformer, så som cytostatAbstract Neuroblastoma is a highly malignant neoplasm found in children. Although children with high-risk neuroblastoma respond to chemotherapy, relapses are common and an estimated long-time survival prognosis is approximately 15%. Thus, there is a tremendous need for new chemotherapeutic drugs for the treatment for neuroblastoma. Polyamines are needed for cell proliferation and cell survival. Th
The software engineering community has proposed numerous approaches for making software self-adaptive. These approaches take inspiration from machine learning and control theory, constructing software that monitors and modifies its own behavior to meet goals. Control theory, in particular, has received considerable attention as it represents a general methodology for creating adaptive systems. Con
In this paper, we study general questions about the solvability of the Kruppa equations and show that, in several special cases, the Kruppa equations can be renormalized and become linear. In particular, for cases when the camera motion is such that its rotation axis is parallel or perpendicular to translation, we can obtain linear algorithms for self-calibration. A further study of these cases no
Numerical simulations of 3D flow past two identical spheres which are held fixed relative to each other at different separation distances and angles (which describe the deviation from the centre line of the trailing particle) are carried out. Particle Re = 300 is used to investigate the dependency of drag and lift coefficients on the separation distances and the angles. The simulations are perform
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The paper covers some material and computational aspects of the rock mechanics of leached cavities in salt. A material model is presented in which the instantaneous stiffness of the salt is obtained by interpolation between the unloaded state and a relevant failure state. The model enables prediction of short term triaxial behaviour from uniaxial stress-strain curves. Key results from a nonlinear
