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In this thesis we are evaluating Bluetooth Low Energy (BLE) v5.1 in combination with Direction Of Arrival (DOA) algorithms and receiving antenna arrays for indoor positioning systems. The thesis is divided in two parts. The first part is the core of the thesis and is composed by the evaluation of DOA algorithms in a direction finding system. A campaign of measurements is carried out in an active i
In the emerging trend of smartphone use and a rising demand for solar photovoltaic (PV) power worldwide, this master thesis project explores the potential to utilize commercially available fisheye lens optics in combination with a smartphone camera to capture and analyze local shading conditions. Photogrammetric studies involving hemispherical sky photos have since long been used for environmental
Amid an anthropogenic sixth mass extinction, amphibians are among the most threatened organism groups. This can be explained largely by the loss and fragmentation of natural wetlands due to agricultural activities and urbanisation. Stormwater retention ponds are designed both to provide flood control and to collect and purify runoff from impervious surfaces but could also serve as amphibian habita
Bakgrund. Prioriteringar är nödvändiga inom hälso- och sjukvården eftersom samhällets resurser är begränsade. Hälso- och sjukvårdspersonal har alltid behövt prioritera mellan olika behandlingar och patientgrupper. Logopeder är också en av de professioner som dagligen ställs införa svåra prioriteringsval mellan patienter. Trots detta finns det inom logopedi få exempel på systematiskt organiserade p
Solving finite-sum minimization problems could be done by the use of a gradient descent algorithm. The algorithm evaluates the gradient with respect to the current state of the parameters and updates the parameters in the direction of the steepest descent. For certain problems, evaluating the full gradient at every iteration is computationally heavy and the gradient of the objective function is th
The human gut microbiota is involved in the host’s health and disease. There has been growing interest in the next generation probiotic candidate Prevotella copri, which plays a beneficial role in glucose metabolism. It is a Gram-negative obligate anaerobe that was first isolated from human faeces and which is present in plant-based fermented foods as well as in human breast milk. The aim of this
Unmanned vehicles need robust systems to ensure the safety of the vehicle and its environment. Being able to find and avoid perilous situations is paramount to such a system. In this paper we suggest an unsupervised image-based anomaly detection algorithm using a variational autoencoder and a superpixel segmentation algorithm, which is adapted to the maritime obstacle detection task. The algorithm
The aim is to develop a profound comprehension of what role knowledge plays in the process of integrating the internal knowledge within organizations with the external knowledge that can be found in the surrounding cluster initiatives. This research contains a qualitative case study which was developed by following an interpretative, abductive approach that granted the authors to work with theory
This paper explores the use of an automated pipeline to construct synthetic (artificially derived) trip data from aggregate socio-demographic sources to build a simulation of individual vehicles interacting with one another. The study shows that quality data sources are required in order to do this effectively and accurately. It is shown that aspects of typical patterns and behaviours may still n
In recent years, scientists have found unconfirmed evidence for a ninth planet in the solar system at a very wide orbit. The parameters for this planet are poorly constrained. Current estimates mostly come from the effect the planet has on trans-neptunian objects. Here we investigate an alternative scenario, that is whether this proposed planet can exert observable perturbation on Main Belt astero
Bakgrund: Personer med allvarlig psykisk sjukdom riskerar minskat engagemang i dagliga aktiviteter, främst gällande förluster av mängden individuellt meningsfulla aktiviteter. Samtidigt har arbetsterapeutiska interventioner som möjliggör engagemang i meningsfulla aktiviteter visat sig vara stödjande för personernas personliga återhämtning. Det finns dock bristande kunskap gällande vilken betydelse
Increase of urbanization and climate change are one of the factors that have been highlighted to influence the change of urban runoff hydrograph. This is resulting in an increase in peak flow within an urban watershed. Downstream flooding is the main problem that arises. To solve this, the sustainable urban drainage system techniques are adopted for reducing peak flow and increase baseflow. This t
Increase of urbanization and climate change are one of the factors that have been highlighted to influence hydrography. This is resulting in an increase in peak flow within an urban watershed. Downstream flooding and increased pollution are the problems that arises. To solve this, the sustainable urban drainage system techniques are adopted for reducing peak flow and increase baseflow. This thesis
The goal of this Master's Thesis is to successfully detect and classify humans in a LiDAR data stream. The focus of the Thesis is on the detection and classification, not on the LiDAR technology. To classify humans machine learning was used and to train the machine learning model we collected our own data and annotated it. A custom software was made for speeding up the annotation process.
I rapporten utvärderas the Waste Management Planning System (WAMPS), som är ett förenklat LCA-baserat verktyg för att jämföra avfallsscenarion utifrån miljömässiga aspekter. Syftet med studien var att hitta bristfälliga områden i modellen som behöver förbättras/uppdateras. Utvärderingen genomfördes genom att jämföra modellens struktur med liknande modeller samt genom att jämföra de resultat som beThis report evaluates the model Waste Management Planning System (WAMPS), which is an LCA-based tool used to compare different waste management scenarios from an environmental perspective. The aim of the study was to find deficient areas in the model that needed to be updated or improved. The evaluation was conducted by comparing the structure of the model to the structure of similar models and by
Abstract Title: Developing an Inventory Control Policy and Forecasting Model for an E- Commerce Company Authors: Patrik Lorentsson & Nilan Nabavieh Supervisor: Johan Marklund, Department of Industrial Management and Logistics Background: Increasingly competitive business environments forces companies to develop better control of the material flows in their supply chain. Inventories are oft
Eutrophication is a serious problem that is affecting the Baltic Sea and its streams connecting to it. It brings a negative impact on the biodiversity, the streams recreational value, sport fishing and also the overall ground water quality. Recently, there have been many restoration attempts on streams across Sweden, to try to repair the streams and prevent them from leaking nutrients and minerals
