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A great number of studies have explored the motivations that drive software developers to devote their time and efforts to contribute to Open Source Software Development (OSSD) projects. Previous studies have stated that both intrinsic and extrinsic motivations are important, however there have been different opinions regarding their relative value. This study further researches OSSD motivations a

The purpose of this thesis is to study beam-cavity interactions, with a focus on how to maintain an unperturbed acceleration field in a conducting cavity with a proton beam present. The impact on a cavity acceleration field from different perturbation sources is investigated through computer simulations of a theoreti- cal model based on a resonant circuit. Perturbations from the RF input pulse to

The competition policy is an area of law that moulds itself according to the structure of the society and evolves by habitually adjusting to the dynamics of the national economies. Due to various historical contexts as well as to the distinct economic systems, the competition law in EU and Japan walked on different paths at different rhythms. However, in both jurisdictions the dissimilarities have

Analysing eye movements recorded with mobile eye-tracking devices is difficult since the eye-tracking signals are severely affected by simultaneous head and body movements. The automatic analysis methods developed for static eye-tracking systems do not take this into account and are therefore not suitable for application to data which also contains head and body movements. As a result, data record

Purpose – The existing literature of open innovation (OI) has focused mainly on large companies and few on SMEs, leaving start-ups with scarce analysis of the use of OI. This paper aims to close that gap and contribute to a better understanding of what drives start-ups to open for innovation, how they use it and comprehend what challenges and benefits OI brings to start-ups. Design/methodology/ap

While industrial robots have traditionally been designed for tasks such as pick-and-place that require a high repeatability, an increasing demand for off-line control and high-precision applications have in recent decades put higher demands on the accuracy of robots. One application in that vain is the detection of X-rays that have been scattered from a sample during X-ray diffraction, which produ

Contactless palmprint recognition is a biometric technology which due to its ease of acquisition, non invasive nature and potentially cheap cost can come to stand competitive to more widely used biometric traits such as finger- or facial recognition. This work uses two different feature extraction methods for palmprint images, the Scale invariant feature transform (SIFT) with an iterative random s

An attempt was made at developing atomic layer etching from a cyclic etching process in an ICP-RIE tool. During the process OES was used for contamination monitoring and estimation of the relative amount of Cl2 left in the chamber during the etch step of cyclic etching processes. The process parameters were then optimized resulting in a quasi-ALE process suitable for pattern transfer as shown by t

The European Union (EU) taxonomy regulation marked a milestone in the sustainable finance agenda. The taxonomy aims to accelerate the mobilisation of public and private finance to support the transition to a net-zero economy. The EU’s taxonomy regulation established a classification system of environmentally sustainable economic activities to provide financiers clarity on what to consider a sustai

Bakgrund Rörelserädsla grundar sig i hur en person upplever smärta och hur beteendet ändrar sig därefter. Det kan vara rädsla för fysisk aktivitet som då kan vara överdriven vilket kallas kinesiofobi. Om idrottaren skadar sig och utöver det utvecklar en rörelserädsla kan det påverka rehabiliteringen negativt. Fokus under rehabilitering av en idrottsskada är ofta kring den fysiska aspekten av skada

The aim of this thesis is to investigate the possibility of enabling biometric identification given a large number of enrolled users. This area is relatively unexplored compared to biometric authentication where a fingerprint template is compared against just a few number of templates. The selected approach is to use auxiliary information available during an identification. This information will b

Powders are complex systems that depend strongly on how the individual particles in- teract and their surroundings. Understanding powders behaviour under certain conditions is very important for the product in many applications, one of them being Additive Manu- facturing (AM). The overall goal of this study is to understand and quantify the effect of flow additives in combination with iron powder.

The focus of this work has been to implement a generic netlist reduction engine to speed up circuit simulations. The netlist reduction techniques are further optimized for Static Random-Access Memory (SRAM), wherein we exploit the repetitive pattern of the circuit. There are many driving factors for developing a netlist reduction engine for SRAM simulations. In today's System on Chip (SoC), S

Alzheimer’s Disease (AD), a neurodegenerative disease, defined by abnormal accumulation of proteins, both extracellularly (senile plaques, consisting of amyloid-beta(Aβ) accumulation) and intracellularly (neurofibrillary tangles, formed by Tau protein). Several studies demonstrate that the immune cells play a central role in the pathogenesis of AD, but it is not known if immune cells from the peri

Folkbiblioteken i Sverige har ett lagstadgat uppdrag att bidra till en stärkt demokrati genom kunskapsförmedling och fri åsiktsbildning. Uppdraget med att bidra till den fria åsiktsbildningen tolkas ofta som att biblioteken ska förhålla sig opartiska till sina användare och sina samlingar. Nya förhållanden i informationsklimatet har skapat nya utmaningar för den fria åsiktsbildningen, såsom desinfPublic libraries in Sweden have a statutory task to contribute to a strengthened democracy through the dissemination of knowledge and the free formation of opinion. The latter is often understood as libraries being impartial to their users and collections. New conditions in the information climate have brought new challenges for the free formation of opinion, such as disinformation and polarizatio

Machine-learning methods have in recent years seen a great deal of use in condensed matter physics. In this thesis we apply such methods, specifically machine-learning with artificial neural networks, to the equilibrium and non-equilibrium description of the Hubbard and Hubbard-Holstein models. In the framework of ground-state density functional theory we reproduce results from the literature rega

Mesosideriter är sällsynta sten-järnmeteoriter med ett gåtfullt ursprung. Deras ovanliga blandning av skorp- och kärnmaterial har föranlett många bildningsteorier under det senaste århundradet. Några frågor har avsett ursprunget till metallen, huruvida den kom från en annan himlakropp, eller från moderkroppens egen kärna, samt varför det finns så pass lite mantelmaterial. Nedslag har haft en centrMesosiderites are rare stony-iron meteorites with enigmatic origins. Their unusual mix of crustal and core materials have inspired many formation theories over the last century. Some of the outstanding questions have regarded the origin of the metal, whether it came from another celestial body or from within the parent body, and the absence of mantle material. The role of impacts has been central

In this project the concept of digital power was examined. Though not a new phenomena, the concept was new to Micropower. The company develops a wide array of battery chargers and wanted to include this concept in future generations of their products. The reasoning behind the decision is the possibilities of smoother development, better error handling and more communication. As a first step differ