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Heart rate variability (HRV) is a measure of the variation in the time intervals between heartbeats. HRV can provide insights into the condition of the heart as well as the state and interaction of the sympathetic and parasympathetic nervous systems. HRV can be measured over shorter periods (5 minutes) or longer periods (up to 24 hours). Similar to pulse, HRV is linked to respiratory rate. During

I dagens globala samhälle finns en växande efterfrågan på trådlös kommunikation. För att möta denna efterfrågan behöver kommunikationssystemen utvecklas, till exempel genom att använda högre frekvenser som i 5G, öka antalet användare som kan använda systemet samtidigt eller använda större antennsystem. Detta ökar dock risken för störningar mellan användares kommunikationslänkar, vilket leder till As two signals of different frequencies pass through a nonlinear element, they mix and create unwanted spurious signals. This intermodulation phenomenon is well studied for active components but can also occur from the material in passive components and is then called passive intermodulation (PIM). The PIM energy levels are a concern when designing communication technology, especially satellites,

The adoption of virtual meeting platforms significantly increased during and after the COVID-19 pandemic, which was caused by the need for effective remote collaboration and communication tools. As a result of advancements in technology, virtual meeting platforms transformed their integral components into more than just video conferencing tools. A notable example is the integration of speech-to-te

This article focuses on the popular thin-film deposition technique chemical vapor deposition (CVD) and outlines its latest research in improving wear resistance. The article highlights how the wear resistance of thin film coatings can be improved through material selection, process parameter optimization, post-processing techniques and structural design. The combined application of these methods h

Denna avhandling utforskar inverkan av generativ AI på förstärkning av cyberkriminella aktiviteter, särskilt genom skapandet av bedrägligt innehåll och hur det påverkar offrens uppfattning. En serie formella experiment (n = 15) bedömde hur AI-genererat bedrägligt material jämför sig med mänskligt genererade bedrägerier när det gäller att påverka offer, med användning av modellen för sannolikhetsbaThis thesis explores the impact of generative AI on enhancing cybercriminal activities, particularly through the creation of fraudulent content that affects victim perception. A series of formal experiments (n = 15) assessed how AI-generated fraudulent materials compare to human-made frauds in influencing victims, using the elaboration likelihood model (ELM) and related cognitive research. The exp

With a growing global demand for improved surveillance and security, the thermal camera has seen its use cases and market share expand. Unlike the visual camera, the thermal camera does not require external illumination. Instead, it relies on the fact that all matter with a temperature above absolute zero emits thermal radiation. The thermal camera measures intensity, but another characteristic of

α-Galactosidases from Aspergillus nidulans (AglC) and Penicillium subrubescens (PsGal36-2527) are exo-acting enzymes that can be found in the Glycoside Hydrolase (GH) 36 phylogenetic cluster with eukaryotic α-galactosidases. In utilizing enzymes for industrial applications, finding enzymes with a broad range of substrate specificities and high catalytic efficiencies is quite challenging. It has be

Given preschools’ important role in shaping children’s learning and development surprisingly little is known about why some Swedish preschools are much more successful in offering high-quality early education than others. Earlier research has shown that socioeconomic gaps in educational achievements can largely be explained by knowledge gaps established during the preschool years. There may be soc

Introduction: The current Tetra Brik Aseptic packaging contains a polyethylene-aluminium layer that is difficult to recycle. Alternative materials have been explored to eliminate this aluminium layer, resulting in reduced carbon emissions but a 30% shorter shelf life. This trade-off raises concerns about potential increases in food waste due to reduced shelf life. Therefore, this study aims to exp

Syfte: Denna studie syftar till att undersöka och öka kunskapen kring chefers roll i främjandet av den psykosociala arbetsmiljön på arbetsplatser, där distans och hybrid arbete blivit vanligt förekommande under och efter corona-pandemin. Frågeställningar:(1)Hur upplever chefer att deras ansvar för skapandet av en god psykosocial arbetsmiljö har förändrats i samband med det ökade distans- och hybr

Solcellsparker blir både allt vanligare och allt större. I denna studie undersöks hur storleken och antalet transformatorer i en solcellspark påverkar dennas förmåga att leverera el. De rådande klimatförändringarna är en av de största utmaningar mänskligheten ställts inför. Fossil elproduktion är en stor bidragande faktor till utsläpp av växthusgaser globalt. Solceller ser ut att spela en avgöranThe main focus of this thesis has been to examine and compare how the size and number of internal power transformers affects the technical performance (robustness, power quality and efficiency) of a utility-scale PV plant. The technical performance was examined in a simulation environment (MATLAB Simulink), where a PV plant with a fixed number of PV arrays and converters, corresponding to a rated

Denna uppsats handlar i huvudsak om fenomenet celldisruption, att genomföra detta på industriell skala och analysera resultaten. Celldisruption är en process som används mycket brett inom bioteknik då själva processen går ut på att utvinna de intressanta ämnen som producerats i en cell. Idag produceras en stor mängd läkemedel cellulärt men även inom bland annat produktion av tvättmedel, ost och fäThis thesis explored the efficacy of high pressure homogenization for disrupting gram-positive bacteria of the species Lactiplantibacillus plantarum. The focus was on the impacts of homogenization pressure and the number of passes through the homogenizer as well as developing a simple method for measuring cell disruption. Turbidity measurements in combination with microscopy and laser diffraction

This master thesis presents a suggested Renovation Passport for two typical 1960s single-family houses. Following the recently approved Energy Performance of Buildings Directive (EU 2024/1275A), all member states are to implement voluntary Renovation Passports by 2026, which will aid in reaching the 2050 goal of a decarbonized building stock. The aim of Renovation Passports is to provide long-ter

Northern Ireland’s relatively recent history as a state has been marked by decades of ethnonational conflict, euphemised as “The Troubles.” While the signing of the Good Friday Agreement marked the beginning of a period of relative peace and stability, the United Kingdom’s decision to leave the European Union has raised concerns that this peace will be threatened. Academic analysis of society and

Building Information Modeling (BIM) är ett arbetssätt och samlat begrepp som ger möjlighet att visualisera önskad design i verklig storlek och dimensioner (ur olika vinklar och vyer). BIM är en smart teknik och en ny designprocess där all information och konstruktion specifikationer skapas i en digital fil. Så BIM är inte enbart en mjukvara, utan en enorm teknik. För att implementera denna teknik Building Information Modeling (BIM) is a way of working and collective concept that provides the opportunity to visualize the desired design in real size and dimensions (from different angles and views). BIM is a smart technology and a new design process where all information and construction specifications are created in a digital file. So BIM is not just a software, but a huge technology. To imp

Following the flooding event in Ringsjön within the Rönne å river basin in January 2024, this catchment area was utilized for a flood risk assessment. The study focused on the precipitation event during August 2023, known as Storm Hans. The flood risk assessment for the Rönne å catchment area was conducted using multi-criteria analysis (MCA) and geographical information systems (GIS). Seven factor

Aktivt kol har identifierats som en av de mer effektiva metoderna när det kommer till att avlägsna organiska mikroföroreningar (OMF) från avloppsvatten. Aktivt kol är ett poröst material med stor ytarea som kan adsorbera andra ämnen. Det är inget som existerar naturligt utan behöver framställas. Framställningen kan ske från i princip vilket material som helst som har en hög kolhalt. En stor del avActivated carbon has been identified as one of the more effective methods of removing organic micropollutants (OMP) from wastewater. Activated carbon is a porous material with a large surface area that allows adsorption of other substances. The material does not exist naturally and therefore has to be produced. The production can be done from any carbon-rich material and today the precursor is mai

Nymölla är en liten kustnära tätort belägen i nordöstra Skåne. Kusten utanför Nymölla, en del av västra Hanöbukten, är uppsatsens geografiska fokusområde. Under 1960- och 1970-talen anlades både massa- och pappersindustri i Nymölla, två betydelsefulla industrier för Sverige, både gällande export och ekonomi. Ett exempel av Sveriges femtiotal massa- och pappersbruk är Nymölla Bruk, en produktionsan

This thesis investigates the practical and conceptual interplay between authoritarian and green ecological governance within China’s Ecological Civilization system, post- 2013. Through a qualitative analysis of official policy documents and semi-structured interviews, the study explores how China navigates the spectrum between the ‘Green State’ and ‘Authoritarian Environmentalism’. Findings sugges

Despite a persistent reliance on conventional grey infrastructure solutions, there is increasing recognition of the vital role of nature-inclusive urban planning in managing climate risks such as floods and heatwaves while simultaneously promoting biodiversity, human health, and well-being. This multifunctionality underscores nature's intrinsic importance, reframing it as a fundamental necessi