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A bone scan is a common method for monitoring bone metastases in patients with advanced prostate cancer. The Bone Scan Index (BSI) measures the tumor burden on the skeleton, expressed as a percentage of the total skeletal mass. Previous studies have shown that BSI is associated with survival of prostate cancer patients. The objective in this study was to investigate to what extent regional BSI mea

The Schwarzschild metric and the Kerr metric describe the gravitational fields around static and rotating black holes, respectively. Here, we derive the Kerr metric in a simpler way than how it was derived originally and determine the stability of the Schwarzschild metric. The Kerr metric was derived by using the Einstein-Hilbert action as well as directly from the Einstein field equations. In ord

We present our studies of four-jet double parton scattering production in proton-nucleus collisions within the framework of the pythia8 event generator. We demonstrate that double absorptive processes in pA generated by the Angantyr model in pythia8 give an enhancement of the total double parton scattering cross section similar to the predictions by Strikman and Treleani in 2001. Additionally, we

In the use of articial neural networks (ANN) for real-life applications there is a need for determining the importance of each input variable for the decisions of the articial neural network. By comparing more complex ANN:s with the simple perceptron, a basic method to determine some form of importance is found. This is tested on three dierent datasets of which one is based on a real life dataset

From a finite-size scaling (FSS) theory of cumulants of the order parameter at phase-coexistence points, we reconstruct the scaling of the moments. Assuming that the cumulants allow a reconstruction of the free energy density no better than as an asymptotic expansion, we find that FSS for moments of low order is still complete. We suggest ways of using this theory for the analysis of numerical sim

The operational definition of a weak value for a quantum mechanical system involves the limit of the weak measurement strength tending to zero. I study how this limit compares to the situation for the undisturbed (no weak measurement) system. Under certain conditions, which I investigate, this limit is discontinuous in the sense that it does not merge smoothly to the Hilbert space description of t

While the hard phase of the strong interaction is well described by perturbative QCD, the soft hadronization phase is less understood. Benefiting from the high statistics from e+e− experiments at the Z0 resonance, it is possible to impose strong two-jet cuts on the data without losing the statistical significance. In these events perturbative activity is suppressed and hadronization effects can be

This study is written with an aim to explain and analyse how Social Welfare in Sweden works with their methodology in regards of home visiting as an examination, or investigation, with focus on economical relief. This is conducted from a perspective that comprehend leverage, power, help, aid and implemented control. Home visiting is a work method that is used by many municipalities and is describe

This paper proposes and investigates a Bayesian relation between optimal L2 regularization strengths and the number of training patterns and hidden nodes used for an artificial neural network. The results support the proposed dependence for number of training patterns, while the dependence on hidden architecture was less clear. Finally, applying different regularization strengths on different laye

Direct coupling analysis (DCA) models correlations in sets of related (homologous) protein sequences using a Potts-like spin model ansatz. From the couplings of the Potts model, derived by inverse statistical mechanics, residue-pair contacts in the 3D structure of the protein are predicted. In this thesis, this approach is applied to structures from the HP model on a square lattice. All HP sequenc

9 to 22 January 2023 A work-in-progress presentation of the performance ‘Mother Soldier’ by Sandra Boss: Thur, 19 January at 15:00, Red Room.During her Make Sound Residency Sandra will develop the piece ‘Mother Soldier’, a performative and musical work written for a percussion ensemble. As part of her residency, she will invite different artists such as Irene Bianco, Sara Nigard Rosendal, Astrid H

https://www.iac.lu.se/sandra-boss-mother-soldier-make-sound-residency - 2026-05-17

https://www.ses.lu.se/en/article/celebrities-cause-10000-times-more-carbon-emissions-flying-average-person - 2026-05-17

I takt med digitaliseringen har det skett ett kommunikativt skifte som kräver de auktoritära myndigheterna att tänka om kring deras kommunikation. Idag har sociala medier öppnat upp möjligheten för myndigheter att skapa en lekfull och kreativ dialog med sina medborgare. Denna kvalitativa studie syftar till att öka förståelsen för myndigheters kommunikation på sociala medier i relation till värdesk

https://www.lusem.lu.se/article/internship-experience-boozt - 2026-05-17

Divergent-light halos are produced when light from nearby light sources is scattered by ice crystals in the atmosphere. We present a theory of divergent-light halos leading to an improved algorithm for the simulation of such halos. Contrary to the algorithm that we presented earlier for simulating such halos, the new algorithm includes a mathematically rigorous weighting of the events. The compute

EU-domstolens avgörande i mål C-29/08 SKF har varit föremål för mycket uppmärksamhet och diskussion sedan det kom under hösten 2009. Avgörandet gäller möjligheten att dra av ingående mervärdesskatt på tjänster förvärvade för att genomföra försäljning av aktier i dotterbolag I denna uppsats har EU-domstolens SKF-dom stått i centrum. Den har att satts in i ett perspektiv och analyserats mot bakgrun