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Ultrakorta laserpulser är bara några femtosekunder(10−15s) långa. De är alltså över på några miljondels miljardels sekunder. Många avändningsområden kräver ännu kortare pulser. Det kan röra sig om materialmodifiering på nanoskalan, ögonoperationer, datalagring, eller mätning av händelseförlopp som är över på bara några femtosekunder - eller mindre! Det finns olika tekniker för att ta en laserpulsNonlinear optical effects can be used for spectral broadening, which the basis of the field of post-compression of laser pulses. When the intensity of light becomes high enough the refractive index becomes intensity dependent, and as the intensity often varies both with position and time so does the refractive index. The consequence of the position dependence is self focusing, an often unfavorable

The transition from animal-based to plant-based proteins is rapidly increasing because of different concerns about meat consumption, some being the nutritional and environmental effects of meat consumption. During this transition, there needs to be a holistic approach to assessing plant-based food. This master thesis is focused on investigating the nutritional and environmental impact of three pla

This thesis fulfills its aim by creating a theoretical framework in order to identify and analyze the perceived challenges of participative decision-making in hybrid teams, which are two concepts of growing importance. Previous research has neglected the intersection between the two, which is a shortcoming this thesis addresses by considering their challenges in conjunction. To address the purpose

The Georgian higher music education sector has undergone major changes since the Erasmus+ International Credit Mobility was established for study and training opportunities between the Erasmus+ programme and partner countries in 2015. This thesis explores the Europeanisation processes of Georgian Higher Music Education by analysing the responses of higher music education institutions to the opport

Additive manufacturing (AM), or 3D printing, has emerged as a rapidly growing manufacturing technique with numerous advantages over traditional methods. This thesis project investigates the application of AM in suspension design. The aim is to explore the advantages of AM, investigate suitable product selection processes, and look into the potential for gaining a competitive advantage by leveragin

With the trend of decarbonization, the transport sector is exploring possibilities of fossil fuel free solutions. Hydrogen can be a potential fuel for future engine applications. In this work, the concept of H2 HPDI is investigated, where a pilot diesel injection ignites the hydrogen jet. This solution may enable low carbon emission and high energy efficiency. 3D CFD simulation is performed using

Problem/Bakgrund: Det svenska högerregeringsskiftet 2022 och medföljande Tidöavtal stadgade förslag på kriminalpolitiska åtgärder innefattande bland annat stora straffskärpningar och utökade polisiära befogenheter. Dessa motioner tycktes mottas med en viss oro vid Frivården i Göteborg, då många anställda utifrån sin behandlingsinriktade arbetspraxis verkade tveksamma till dessa skärpningars effek

En aktieägare i ett tillgångsägande aktiebolag, som vill få egenhändig kontroll över en tillgångs avkastningsförmåga, har idag två möjliga vägar att välja mellan för att uppnå sitt mål. Denne kan förvärva aktier i bolaget eller förvärva, direkt eller indirekt, själva tillgången. Beroende på vilken väg som väljs kommer aktieägaren stöta på olika typer av hinder. Denna uppsats syftar till att redogöA shareholder in an asset holding company, who wishes to gain direct control over the asset's capacity to produce profit, currently has two possible paths to choose from in order to achieve his or her goal. He or she can either acquire shares in the company or directly or indirectly acquire the asset itself. Depending on the chosen path, the shareholder will encounter different types of obstac

This thesis analyzes how the young public feels about communication efforts that seek to emotionally appeal to them, by investigating the example of brand activist campaigns. By applying narrative theory, the study examines how these campaigns are structured to evoke emotions and how the young public emotionally responds to them. This way, the thesis has a holistic approach to the emotional side o

Studien syftar till att öka kunskapen om riskerna som kan påverka tidsåtgången för underhållsarbete inom järnvägen, särskilt vid byte av fast korsningsparti i spårväxlar. Den tid som vanligtvis tillges vid underhåll ger inget utrymme för att oväntade händelser uppstår, därför är det av stor vikt att underhållet utförs effektivt för att slutföras inom tidsramen. Riskhanteringar utgörs av följande mThe study aims to increase knowledge about the risks that can affect the time required for maintenance work on railways, particularly when replacing fixed crossing sections in switches. The time allocated for maintenance usually does not allow for unexpected events, so it is crucial that maintenance is carried out efficiently to be completed within the timeframe. Risk management comprises the foll

The purpose of this study was to compare the food security and dietary diversity status of Bangladeshi immigrants living in Sweden to their position in Bangladesh. Structured surveys were used to collect data from 15 Bangladeshi immigrants, which included demographic information as well as indices of food security and dietary diversity. Food security was assessed using the Household Food Insecurit

Att påverkas av andra är något för oss så naturligt att vi sällan tänker på hur ofta det händer. En annan kropps närvaro kan ge oss energi lika väl som ta den ifrån oss. Den kan få oss att vilja komma närmare eller längre ifrån. Detta samspel är inte unikt för oss människor, utan kan även ses på himlavalvet. På universums dansgolv finner vi par av alla dess slag. Särskilt mystiska är kanske de svaGalactic nuclei contain super-massive black holes (SMBHs), nuclear stellar clusters (NSCs), or both. In the NSC, intermediate-mass black holes (IMBHs) are likely to reside and form highly eccentric binaries. Over time, the orbit of a binary could harden via interaction with surrounding low-mass stars. Eventually, it would be possible for the IMBHs to, via the emission of gravitational waves (GWs),

The deep-seated role of private vehicles in our lifestyles limits the pursuit of sustainable urban development from an economic, social, and environmental standpoint. As such, this qualitative study aims to identify and explain the determinants behind the car phenomenon. Interviews are performed with non-low-income car owners in Milan and Stockholm commuting zones. The two areas depict different a

This thesis investigates if China is a socialist economy or not. The topic, which has triggered many leading scholars, is highly interesting since institutions are pivotal to understanding a country’s economic performance. Previous studies have neglected the classic socialist literature, giving ambiguous interpretations of what is socialism. This thesis fills that gap through a multicriteria appro

Title: Destination Facelift: Unveiling the Dynamic Capabilities that Rejuvenate Madeira Island Date of the seminar: 2nd of May 2023 Course: BUSN39: Degree Project in Global Marketing Authors: Ivelina Petkova & Sofia Rosin Supervisor: Magnus Nillson Keywords: Destination Rejuvenation, Dynamic Capabilities, Destination Repositioning, Destination Diversification, Destination Marketing, Madeira Is

Syftet med denna rapport är att utvärdera möjligheten att använda Virtuell Verklighet (VR) som ett medium för användbarhetstestning. Användbarhetstestning är en viktig del av alla iterativa utvecklingsprocesser. Vanligtvis utförs testerna i en laboratoriemiljö utanför produkternas naturliga miljö. Genom att använda VR kan dock användare uppleva testmiljön på ett mer realistiskt sätt. Studien genoThis thesis aims to evaluate the feasibility of using virtual reality as a medium for usability testing. Usability testing has long been an important part of any iterative development process. Most usability testing is, however, done in a lab setting, outside the product's natural environment. Virtual Reality (VR) on the other hand can engross a user in any environment. This thesis was done i

Ända sedan tidernas begynnelse har människor funderat på frågor kring den värld vi lever i och dess ursprung. Förklaringarna har varit många, olika och har ofta varit förknippade med religiösa trosuppfattningar. Idag är den rådande vetenskapliga konsensusen att vårt universum skapades för cirka 14 miljarder år sedan i det så kallade Big Bang, eller 'Den Stora Smällen' på svenska. Enligt deIn this report, the elliptic flow in high centrality Pb-Pb collisions is calculated using two particle correlations $v_2\{2\}$ but without any imposed separation in η with data taken from the ALICE experiment at CERN in 2015. Instead, measurements of the same correlations in proton-proton collisions is used as a background to account for non-flow effects and data is correlated between the time pro

The current paper aims to explore the psychometric properties of two public domain cognitive ability scales, Cog15 and ICAR16, and investigate how well they each capture the g-factor in a Swedish sample (N = 428). The motivation for choosing these aims is that public domain, free, and easily accessible intelligence tests are needed for measuring the g-factor. Principal components analysis (PCA), c

The aim of this study was to gain an understanding of how gender was used and expressed through burial customs in the South Scandinavian mesolithic. This topic was chosen to further explore gender aspects during the mesolithic through different perspectives on the burial to complement previous research. For this purpose 110 graves from Sweden and Denmark were examined and 48 of them were deemed ap