Sökresultat

A numerical study is performed to investigate the effects of various discrete rib configurations on the heat transfer and fluid flow characteristics of a rotating rectangular straight channel (aspect ratio of 2:1) with 45° orientation. Three parameters of the discrete rib configuration - rib streamwise distance, rib widthwise distance, and inner-half-rib angle - are examined based on a continuous

Air pollution is estimated to cause more than 7000 deaths annually in Sweden alone. To reduce the impact of air pollution and to plan and build sustainable cities, it is vital that research is translated into efficient decisions and practice. However, how do civil servants in a municipality access research results? How do they normally find relevant information, and what obstacles are there to acc

Forty-one assays were analysed at the 3rd International Workshop on the standardisation of islet cell antibodies. Analysis of precision demonstrated assays consistently detecting blind duplicates within one doubling dilution and capable of discriminating one doubling dilution differences in islet cell antibody concentration. Some assays, however, reported duplicates discrepantly by more than seven

In this study, we examined the isolation of lignin-carbohydrate complexes (LCCs) from sodium-based spent sulfite liquor, in conjunction with minimization of membrane fouling. We screened 3 polysulfone (PS) membranes with cutoffs of 100, 50, and 25 kDa, respectively. Flux and retention for the 100- and 50-kDa membranes had the same order of magnitude, indicating that these properties were determine

Siljan, central Sweden, is the largest known impact structure in Europe. It was formed at about 380 Ma, in the late Devonian period. The structure has been heavily eroded to a level originally located underneath the crater floor, and to date, important questions about the original size and morphology of Siljan remain unanswered. Here we present the results of a shock barometry study of quartz-bear

Solar radiation (Rs) is one of the main parameters controlling the energy balance at the Earth’s surface and plays a major role in evapotranspiration and plant growth, snow melting, and environmental studies. This work aimed at evaluating the performance of seven empirical models in estimating daily solar radiation over 1990–2004 (calibration) and 2004–2010 (validation) at 13 Peruvian meteorologic

Affibody molecules, small (7 kDa) scaffold proteins, are a promising class of probes for radionuclide molecular imaging. Radiolabeling of Affibody molecules with the positron-emitting nuclide 68Ga would permit the use of positron emission tomography (PET), providing better resolution, sensitivity, and quantification accuracy than single-photon emission computed tomography (SPECT). The synthetic an

Atrial fibrillation (AF) is the most common heart arrhythmia, characterized by the presence of fibrillatory waves (f-waves) in the ECG. We introduce a voting scheme to estimate the dominant atrial frequency (DAF) of f-waves. Methods: We analysed a subset of Holter recordings obtained from the University of Virginia AF Database. 100 Holter recordings with manually annotated AF events, resulting in

Purpose: To evaluate the performance of different probabilistic classifiers to predict posterior capsule rupture (PCR) prior to cataract surgery. Methods: Three probabilistic classifiers were constructed to estimate the probability of PCR: a Bayesian network (BN), logistic regression (LR) model, and multi-layer perceptron (MLP) network. The classifiers were trained on a sample of 2 853 376 surgeri

As more and more urban areas are planning and responding to climate change there is a need to understand the role that local action is having at the national and international level. The Paris Agreement called for a global goal on adaptation but in practice aggregating progress on adaptation is hard to achieve. Effective monitoring, evaluation, reporting, and learning systems are crucial to inform

Studies indicate that crime is a common occurrence in Swedish schools and that schools create their own living law regarding managing crime. This study aims to analyze the approach of the teachers that makes crucial decisions when dealing with crime in school. The goal is to find out how different norm perspectives, that were found to be relevant when conducting the literature review, has affected

Elektroencefalografi (EEG) är en metod för att mäta hjärnans aktivitet genom att placera elektroder i hårbotten på en individ. Metoden är noninvasiv, relativt billig samt enkel att implementera, och är därför populär inom både forskning och medicin. EEG kan exempelvis användas för tankestyrning av robotproteser, känsloanalys, samt diagnostisering av olika sjukdomstillstånd såsom epilepsi. För attElectroencephalogram (EEG) measurements are notoriously noisy and non-stationary and there are several specialized techniques for their analysis and interpretation. In this thesis, we implement a collection of stationary and non-stationary methods including coherence, Phase Locking Value (PLV), Phase Lag Index (PLI), and their imaginary counterparts. In particular, we use the Singular Spectrum Dec

This thesis will explore the use of AWS machine learning services that enable natural language processing (NLP). More specifically, this work will focus on sentiment analysis of product and service reviews written in Swedish. To find the most efficient solution to this task, the ready-made sentiment analysis tool available on AWS (Amazon Comprehend) was compared to custom-made solutions built on t

Svensk rätt erbjuder ett starkt skydd för både barn och arbetstagare. När en förvärvsarbetande förälder placeras på ett HVB-hem tillsammans med sitt barn uppstår dock en rättslig spänning. För dessa situationer finns ingen särskild reglering som tydliggör förälderns rätt till ledighet eller ekonomisk ersättning, trots att frånvaron bygger på ett myndighetsbeslut med barnets bästa som utgångspunkt.Swedish law provides robust protection for both children and employees. However, legal uncertainty arises when a parent is placed in a residential care home (HVB) together with their child. In such cases, there is currently no specific regulation clarifying the parent’s right to take leave from work or receive financial compensation, even though the absence is based on an official decision grounde

This study examines the use of transformer-based language models for multi-label classification of Environmental, Social, and Governance (ESG) topics in media coverage of DAX-listed companies. Using a dataset of approximately 11,500 third-party media texts, thirty ESG topics were assigned to documents through a pipeline combining lemmatised keyword matching and semantic similarity. Four models we

Sammanfattning Titel: Snögubben vaknar till liv Arbetet problematiserar och belyser mitt arbetssätt inför min gestaltning som ”Snögubben” (Snowman) i Rusty Magees musikalopera ”Vinteryra” (Flurry tale). Arbetet problematiserar framför allt den klassiska sångarens utmaning i att gestalta roller inom andra genrers än opera. Med hjälp av källor i form av egna intervjuer och inspelade historiska Title: The snowman comes to life This lecture recital problematizes and explores my approach in Rusty Magees musical opera “Flurry tale”. The lecture recital primarily problematizes challenges for the classically trained singers performing roles outside of the opera genre. By the help of sources such as conducted interviews and historical recordings I present vocal approaches to performing in

Har du någonsin hört talas om en supernova? En exploderande stjärna som kastar ut högenergetiska partiklar. Inte nog med det så färdas även dessa partiklar genom hela galaxen. Galaxer är stora och endast några ut av partiklarna når vår jord. Vi kan finna dessa partiklar i en iskärna och på så sätt har forskare kunnat få tag på information som behövs för att kunna studera jordens magnetfält. Med inExtreme geomagnetic variations such as excursions where the magnetic poles shift, and return are not fully understood. 10Be, used as a proxy for the magnetic field studies has been proposed as a compliment to paleomagnetic models, allowing adjustments. LSMOD.2 is a sediment and volcanic based magnetic model encompassing the Laschamps excursion ~41 000 years ago. LSMOD.2 is limited due to lacking d

Bloodstream infections (BSIs) are among the top causes of death in Europe and as such, a serious health concern. Blood cultures are the most common method to diagnose this condition, bringing certain disadvantages. Mainly, it is time- consuming as it can take several days to get the test results back. Furthermore, the blood cultures carry a high risk of contamination. For this reason, a successful