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Sweden has seen a rise of shootings and bombings, investigations of these crimes has shown that a sizable amount has been organised through Crime as a Service (CaaS), where serious violence is outsourced to relatively unconnected actors via anonymised and encrypted communication. Using a qualitative study design this thesis examines four Swedish court judgements involving CaaS and serious violence
This paper investigates expanding properties of ensembles of random bipartite graphs whose adjacency matrices are Gallager's low-density parity-check matrices. Two methods for calculating the expansion coefficient are demonstrated. It is shown that in the ensemble of the considered bipartite graphs, there exist graphs which have better expanding properties than the previously known expanders.
The ensemble of regular Low-Density Parity-Check (LDPC) codes introduced by Gallager is considered. Using probabilistic arguments a lower bound on the normalized minimum distance is derived. A new code construction, called Chained Gallager codes, is introduced as the combination of two Gallager codes and its error correcting capabilities are studied.
There are quite detailed structural data on the extracellular ligand-binding domain and the intramembrane channel-forming domain of the nicotinic acetylcholine receptors (nAChR). However, the structure of the intracellular domain, which has variable amino acid sequences in different nAChR subunits, remains unknown. We expressed in Escherichia coli the intracellular loops (between transmembrane fra
An extensive phenomenological study of the Drell-Yan (DY) process in pp collisions at various energies is performed in the color dipole framework. Besides previously studied γ∗ production we also include the Z0 contribution relevant at large dilepton invariant masses. We investigate the DY cross section differential in invariant mass, rapidity and transverse momentum of the dilepton pair in pp col
We present a detailed study of open heavy flavor production in high-energy pp collisions at the LHC in the color dipole framework. The transverse momentum distributions of produced b-jets, accounting for the jet energy loss, as well as produced open charm D and bottom B mesons in distinct rapidity intervals relevant for LHC measurements are computed. The dipole model results for the differential b
When looking at energy supply on a larger scale than to a single building, such as to a neighbourhood or a city, the combined effects of peak power demands can be seen to cause problems on the production side. These can be both economic and environmental and lead to the emission of greenhouse gases when fossil fuels are used to meet these peaks. Encouraging the demand side to reduce their power de
Knowing the ohmic resistance in the materials allow to know in advance its electrical behavior when a potential difference is applied, and therefore the prediction of the electrical performance can be achieved in a most certain manner. Although the Lattice Boltzmann method (LBM) has been applied to solve several physical phenomena in complex geometries, it has only been used to describe the fluid
In past years, Sweden has been facing a rapid growth of photovoltaic cells, and the total PV installation capacity increased from 300 kW to 1090 MW (2006–2020). The increased number of PV users was a result of active support from the Swedish government with an aim of achieving multiple sustainable goals regarding renewable energy. This project evaluates the profitability of shared PV systems in co
Glypicans (GPC1-6) are associated with tumorigenic processes and their involvement in neoplastic behavior has been discussed in different cancer types. Here, a cancer-wide GPC expression study, using clinical cancer patient data in The Cancer Genome Atlas, reveals net upregulation of GPC1 and GPC2 in primary solid tumors, whereas GPC3, GPC5 and GPC6 display lowered expression pattern compared to n
As the population of the world increases, there will be a larger number of people with major neurocognitive disorder and anemerging need for prompt diagnosis and treatment. A digital cognitive test could lead to that more people can be tested withoutburdening healthcare. To explore elderly’s experiences of using a digital cognitive test a cognitive healthy population of 70-year-oldswere recruited
In China, the strategic use of personal relationships is pervasive in transactions with government authorities as well as in inter-firm relations. Explanations as to when and why firms rely on guanxi emphasize a close link between organizational resources, environment and corporate strategic choices. Our study shifts attention to the importance of CEO preferences, specifically risk aversion, and s
Purpose: The use of prophylaxis for thromboembolism and infection in anterior cruciate ligament (ACL) reconstruction is not well documented and no general guidelines have been established. The aim of this study was to evaluate the ACL surgeons’ individual strategies of thromboprophylaxis, use of prolonged antibiotic prophylaxis and vancomycin-soaked ACL grafts, and if its use is supported in the c
Syfte: Att undersöka om utomstående investerare kan generera abnormal avkastning genom att följa insynspersoners köptransaktioner bland svenska bolag på First North Growth Market. Studien undersöker även om faktorerna transaktionsstorlek, insynspersoners befattning och bolags marknadsvärde kan förklara utomstående investerares möjlighet till abnormal avkastning genom att följa insynspersoners köpt
Examensarbetet utfördes i samarbete med Klarna i Giessen med syftet att utveckla en komponent i en del av en webbapplikation som hanterar autentisering. Komponenten skulle interagera med auktoriseringstjänsten försedd från Okta tillsammans med korrekt auktoriseringsflöde som en lösning för tillåten användning av webbapplikationen. Arbetet inleddes med en undersökning av webbapplikationen, bakomligThis thesis was written in collaboration with Klarna in Giessen with the purpose of developing a component to deal with authentication in a web application. The component is intended to interact with the authorization service from Okta with the correct type of authorization flow to allow or disallow access to the web application’s resources. At first, knowledge was gathered regarding the web appli
