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Detta examensarbete undersöker och jämför lönsamheten för två olika metoder för underhållsarbeten på järnväg i form av spårbyten utifrån ekonomiska och tidsmässiga aspekter. Dessa metoder är den traditionella traktormetoden och det avancerade spårbyteståget. Syftet med arbetet är att undersöka användningen av spårbyteståg och traditionella metoder vid underhållsarbeten på bana i Sverige samt när dThis thesis examines and compares the profitability of two different methods for railway maintenance work in the form of track renewal based on economic and time aspects. These methods are the tractor method and the advanced track renewal trains. The purpose of the thesis is to investigate the use of track renewal trains and tractor methods for track maintenance work in Sweden and when the former

This study evaluated the efficacy of reduced-temperature pasteurization in preserving the nutritional, sensory, and microbial integrity of two fruit juice products: a standard orange juice and a probiotic mango juice enriched with Lactiplantibacillus plantarum 299v, conducted at Österlenmejeriet AB in Lunnarp, a subsidiary of Danone. Laboratory-scale thermal treatments were applied at temperatures

Purpose: The purpose of this study is to analyze the sentiment towards masstige collaborations on social media, and to see if contextual factors, such as duration of the collaboration or the sentiment towards the partnering brands prior to the collaboration, are related to a change in said sentiment. Theoretical Perspective: This study draws on existing literature on the masstige topic to define

This study investigates deep learning approaches for automated land use classification from high-resolution remote sensing imagery, comparing Convolutional Neural Network (CNN) and Vision Transformer (ViT) architectures. Eight semantic segmentation models were evaluated on the HRSCD dataset containing 291 aerial image pairs (0.5m resolution) with four land use classes: building, agricultural, fore

The current fast paced technological innovation demands major attention from businesses across the globe. AI dominates discussions one day, and the next it is all about quantum computing. To remain competitive companies must constantly be on the watch for trend shifts and technological advancements. In order to stay ahead of the curve companies can utilize technology scouting to monitor the techno

Modellering av naturliga bakgrundskoncentrationer av suspenderat sediment: En studie av Rødsand lagun Fehmarnbelttunneln står färdig 2029 och kommer minska tågrestiden till kontinenten med 2,5 timme. Det omfattande byggnadsprojektet innefattar bland annat tillverkning av betongtunnelsegment och muddring av havsbottnen. Modellering av sedimentspill vid muddring är en viktig del i arbetet för attAnthropogenic coastal and marine activities, like dredging of the seabed, can affect ecosystems through increased turbidity by raising the level of suspended sediment concentrations (SSC). To accurately validate spilled sediment, simulations of background concentrations are essential as both spilled and natural sediment is included in measurements. This thesis aims to improve the representation of

This study looks at the change of the Urban Heat Island (UHI) intensity in Rio Park, Madrid, which during the course of the last 20 years has in essence been retransformed from an urban highway into a flourishing green park along the Manzanares river. The deconstruction of the M-30 highway started in 2005, was completely finished in 2015, and canopy growth in the area continued during the followin

The goal of this research is to investigate how the use of provocative place branding, by companies, influences audience engagement with national identity, from a sensemaking perspective. The study specifically investigates how audiences, in the case of residents of Denmark, make sense of provocative content and how it influences their sense of place and national identity. The answered research qu

Denna kandidatuppsats, Att springa på likes, undersöker hur träningsappen Strava använder spelifiering och övertygande systemdesign. Analysen utgår från ramverket Persuasive Systems Design (PSD) för att förstå hur appen påverkar användares träningsmotivation. Syftet är att identifiera vilka spelelement i Strava som upplevs som mest motiverande samt om dessa designprinciper stödjer långsiktiga trän

The growing emphasis on sustainable packaging and increasing regulatory pressures on recyclability have driven the need for alternative barrier materials in multilayer beverage cartons. This study investigates the recycling behavior of a water-soluble polymer, polyvinyl alcohol (PVOH), used as a barrier layer in beverage cartons. A lab-scale experimental setup was designed to simulate industrial r

Detta arbete är en explorativ studie om svenska fysiklärare på gymnasiet och hur de ser på språkets roll inom fysikämnet samt hur de ställer sig som lärare i rollen att behöva vara en lärare som undervisar språkliga element. Studien genomfördes med hjälp av kvalitativa intervjuer där totalt fyra lärare med varierande erfarenhet som fysiklärare intervjuades. Resultaten analyserades med hjälp av ett

This study focuses on the feasibility of gravity-driven membrane (GDM) microfiltration (MF) as a low-energy treatment option for urban lake restoration in Lund, Sweden. Four lakes, namely Sjön Sjön, Stadsparken, Kunskapsparken Dammen, and Spexardammen, were selected based on their varying water quality characteristics. A silicon carbide (SiC) membrane was tested in a laboratory-scale setup operate

This study addresses the thermal comfort challenges faced by high-altitude residential buildings in Nepal. A field study was conducted in five houses located in the city of Marpha, where observations concerning building materials and construction types were made alongside measurements of air leakage, indoor temperature, relative humidity, and CO2 concentrations. Aimed at raising indoor temperature

This thesis explores how the relationship between economic shocks and fertility rates has evolved in Spain from 1977 to 2024, using regional panel data across the country’s 17 autonomous communities. The analysis applies two-way fixed effects models to assess whether the impact of economic variables, particularly unemployment, has diminished over time, as demographic and cultural factors have gain

This thesis investigates how sampling strategies influence the predictive accuracy and interpretability of bankruptcy models. Using financial data from U.S. publicly listed firms (2009 to 2023), it compares logistic regression and random forest classifiers trained under three sampling setups: no resampling, random undersampling (RUS), and SMOTE. Models are trained to predict one-year-ahead bankrup

Då andelen äldre ökar globalt kommer allt fler personer vara i behov av medicinteknisk utrustning, såsom hygienstolar, för att genomföra olika basala hygienrelaterade aktiviteter. Kommodpannor är vanliga tillbehörsprodukter till hygienstolar som traditionellt har fästs under hygienstolens sitts med hjälp av skenor, en fästmetod som medför hygienproblem samt en klämrisk för vårdtagaren.This thesis project was completed in collaboration with Arjo, a MedTech company headquartered in Malmö, Sweden. Arjo’s product offering is largely centered around providing healthier outcomes for individuals with limited mobility and includes products for patient transfer, hygiene, disinfection, etc. One product type which is central to Arjo’s mission is the hygiene chair. This type of product is

Introduction: Side-stream residue, oat okara, from the oat-milk production contains valuable nutrients but possesses a high risk of microbial spoilage. Valorisation of oat okara is therefore important to make sure that the oat beverage production stays sustainable. In this project, High-pressure processing (HPP), heat treatment and Lactobacillus fermentation have been evaluated for their microbial

Distributed control systems, förkortat DCS, är ett komplett automationssystem som har stora användningsområde inom dagens processindustri. På grund av sin skalbarhet, driftsäkerhet och redundansmöjligheter är dessa system idag vanligt förekommande. DCS är oftast väldigt stora och komplex system som kräver mycket tid och arbete för att starta igång. Detta resulterar i att uppstartstiden för projekt