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The fouling of an ultrafiltration plant, separating bleach plant effluent coming from a sulfite pulp mill, was evaluated depending on the pH value of the feed stream for both softwood and hardwood. The objective was to decrease the dosage of the alkaline substance NaOH in the first bleaching stage, without altering the performance of the ultrafiltration. Incoming feed streams, as well as permeate
Everyone who has worked with research knows how rewarding experimenting and developing new algorithms can be. However in some cases, the hard part is not the invention of these algorithms, but their evaluation. To try and make that evaluation easier, this thesis focuses on the collection of data that can be used as positional ground truths using an autonomous measurement platform. This should assi
In this thesis we employ computer vision methods in order to extend and improve the functionality of automatic doors. This thesis is based around the implementation of a door entrance system which uses information from detected pedestrians to make qualified decisions regarding door activation. This can lead to a reduced amount of unnecessary openings which will reduce the energy consumption of bui
Denna masteruppsats studerar den nuvarande upphovsrätten inom EU och fastställer om det för närvarande finns skydd för AI-producerade verk. Det finns möjlighet att skydda verk som har blivit skapade av AI-system om det finns en länk mellan den mänskliga upphovsmannen och det slutliga verket. I detta fall betraktas AI-systemet som ett redskap för att skapa ett specifikt alster. Om länken mellan denThis master thesis discusses current copyright rules and if there is presently a copyright protection for these types of works. There is a possibility to protect works that have been generated by AI’s. However, this is only possible if a human is using the AI as a ”tool”, in order to reach a certain end-goal. There has to be a clear link between the human author and the machine, otherwise neither
In each electric vehicle there is an energy storage part and a propulsion part to drive the vehicle in the desired direction. To make them compatible with each other and at the same time have a good efficiency, there is need for a system that transfers energy from the batteries to the motor. In electric drive systems this energy transfer is done with different converters and the converter that is
This bachelor thesis evaluates the use of Clustering and Regression to separate good images from a given set of images. Whether the images are good or not is decided by the customers of the company that this system is developed for. In this thesis these customers are represented by a number of test persons. The images have been analysed with Amazon’s service Amazon Rekognition where the answers ar
Syftet med studien var att undersöka anorektiska patienters upplevelse av tvångsvård enligt LPT (Lagen om psykiatrisk tvångsvård) utifrån en psykologisk ram, för att nå fördjupad förståelse för deras erfarenheter. Semistrukturerade intervjuer genomfördes med elva deltagare. Det insamlade materialet analyserades med en tematisk analys och nio teman gick att urskilja. Studiens centrala slutsatser vaThe aim of this study was to explore anorexic patients' experiences of compulsory treatment within a psychological frame, to gain a deeper understanding of their experience. Semistructured interviews were applied with eleven persons. Thematic analysis was implemented to analyse the collected data, which allowed the authors to distinguish nine different themes. The main results of the study ind
Bakgrund: Olika faktorer utgör en persons förmåga till att utföra aktiviteter, dvs. en persons aktivitetsförmåga. Hästunderstödda insatser (HUI) är en typ av aktivitet och behandlingsform. För bästa effekt bör den utföras av en utbildad ridterapeut. Tidigare forskning har visat att HUI haft positiv inverkan vid rehabilitering för personer med psykiska och fysiska funktionsvariationer. Det finns dä
This thesis addresses a project conducted in collaboration with Volvo Car Corporation, to develop a new concept for luggage covers in car luggage compartments. The purpose was to find a new concept, with focus on user friendliness and environmental sustainability, which automatically opens up for easy loading of the luggage compartment. The fabric in today's solution is made of polyester and P
Det finns många svårigheter med att tillverka livsmedelsprodukter som är emulsioner. Syftet med detta projekt var att utveckla en emulsion enligt krav som beställaren av produkten hade satt upp. En första utveckling av produkten skedde ungefär ett år tidigare, och den fortsatta utvecklingen baserades alltså på denna produkt. Det som hade blivit ett problem med den första utvecklade produkten var aIt is a difficult process to create a drinkable food product that is an emulsion. The aim with this project was to create one, containing ingredients on levels described by a customer. A product had been developed before, but resulted in a product that had viscosity that was too high, and the aim with this further development project was to keep the levels of the ingredients on a level according t
Den snabba utvecklingen av nya digitala verktyg leder till nya möjligheter för fjärrvärmebranschen inom områden som laststyrning och feldetektering. För dessa ändamål behövs tillförlitliga modeller som beskriver centralerna. Syftet med denna studie är att utveckla en grupp matematiska modeller som beskriver uppmätta värden och deras utveckling över tid, för en väl fungerande fjärrvärmecentral. FörIn the rise of digitalization, new possibilities are being discovered for district heating in areas like demand side management and fault detection. For these purposes it is necessary to have reliable models describing the substations. In this thesis, the aim is to develop a group of mathematical models to describe measured quantities and their progress through time, for a well performing substati
This thesis examines the possibility of modelling trajectory and estimating distance during a walk using only a smart phone attached to the waist. Due to GPS not functioning indoors, a navigation system without the need of external communication could be the perfect complement for closed spaces. This thesis considers such a system, where the smart phone contains accelerometer and gyroscope sensors
The study was carried out to identify critical factors for processed fruit shelf life in Tetra Recart packages. To investigate the importance of package volume and headspace volume, vitamin C was chosen to be the indicator. Oxygen in headspace, headspace volume, dissolved oxygen in product, oxygen transmission rate (OTR) and the concentration of vitamin C along storage time were measured to unders
This Master's thesis has concerned the segmentation and classification of background textures in images. In order to segment the images we have used the SLIC algorithm to create superpixels. These are a sort of over segmentation of the image where pixels close to each other and similar in colour are considered to be the same texture. All superpixels were then classified using a convolutional n
In light of the housing shortage in Sweden, municipalities all over the country are struggling to fulfil their responsibility of housing provision. In many municipalities it is an imminent problem to provide affordable and proper housing, not least for the most vulnerable groups in society. This situation has not gone by unnoticed. Several political initiatives have been taken in order to examine
Purpose: Supply chains lack transparency due to their complexity and fragmentation. Blockchain technology is increasingly expected to revolutionise businesses and promises to create trustworthy transparency. This study aimed to investigate the potentials of blockchain technology for supply chain transparency beyond the growing glorification. Methodology: The potentials, as well as immaturities and
Rasism är ett fenomen som tycks ha förmåga att byta skepnad och anpassa sig till rådande omständigheter. Det behöver därför ständigt motarbetas för att minimera utanförskap och lidande. Problematiken drivs dock av starka underliggande psykologiska mekanismer som har visat sig mycket svåra att motarbeta. Ett flertal metoder har utvecklats i syfte att reducera fördomar som anses vara den affektiva dRacism is a phenomenon that seems to be able to shift shape and adjust to current circumstances. Therefore, it needs to be battled at all times to minimize exclusion and suffering. Furthermore, it is driven by underlying psychological mechanisms that have proven very difficult to counteract. A plethora of methods have been developed with the aim of reducing prejudice, which is considered the affec
