Sökresultat

Filtyp

Din sökning på "*" gav 537975 sökträffar

Data-Driven Exploration of SiC MOSFET Aging Using Symbolic Regression

Tänk dig en typisk morgon, du vaknar och med en simpel blick låser du upp din telefon, din resväg planerar du med Google Maps och i bilen lyssnar du på musik som är noggrant utvald för just dig. Så länge det fungerar, behöver du inte fundera över hur det går till. Men vetenskapsmän nöjer sig inte med att det bara fungerar – de vill förstå. Denna rapport undersöker hur AI kan användas för att hittaThis study explores the relationships between voltage, temperature, and consumed life in silicon carbide (SiC) MOSFETs using symbolic regression as a data-driven tool for deriving interpretable equations. The data comes from an accelerated life-time test performed by RISE. The symbolic regression model was implemented using the open source program ”PySR”. Since real experimental data were used, cl

Are We In Control? Challenges to Governance of Autonomous Weapons Systems in the Age of Artificial Intelligence

The rise of AI is leading to paradigm shifts in every sector of modern society, including the military. One concerning change is the increase in the development, testing, and deployment of autonomous weapons systems (AWS), which utilise modern AI without adequate controlling regulation or governance. This thesis explores what it means to have control of AWS and whether it is possible to effectivel

Development and Simulation of a Computational Model for Transcatheter Balloon Valvuloplasty in Aortic Valve Stenosis

Datorsimuleringar av barnhjärtinterventioner Aortaklaffstenos är ett vanligt medfött hjärtfel hos barn, som innebär att aortaklaffen är trång och släpper igenom för lite blod. Aortaklaffen har vanligtvis tre klaffblad. I en typ av aortaklaffstenos har två av klaffbladen vuxit ihop, så att klaffen endast har två klaffblad. Detta leder till att klaffen inte kan öppnas helt vilket tvingar hjärtat atAortic valve stenosis is a common congenital heart defect among children. In affected patients, the normal tricuspid valve structure is malformed into a bicuspid valve structure due to a fusion at one commissure. A common treatment is transcatheter balloon valvuloplasty, where a balloon is inserted through the aortic valve and inflated to mechanically tear the fused region, restoring a tricuspid s

Beyond the Beauty Filter: A Quantitative Study Exploring Tiktokers’ Role in Shaping Beauty Brand Image

Research Question: What is the impact of TikToker’s authenticity and quality of TikToker’s content on brand image in the beauty industry, and to what extent does the attitude towards sponsored content moderate these relationships. Purpose: The purpose of this study is to explore the impact of TikTokers in the beauty industry on brand image, focusing on the roles of TikToker’s authenticity, qualit

Cumulative Wisdom or Compounding Complexity: The learning curve among serial acquirers. (Sweden)

This thesis investigates the performance dynamics of serial acquirers in the Swedish market, specifically focusing on their ability to realize cost synergies over time. Through an empirical analysis of Swedish firms engaging in mergers and acquisitions (M&A) between 2010 and 2019, we aimed to determine whether serial acquirers exhibit improved synergy realization in subsequent acquisitions com

Anpassningen av chatbots inom kundservice - En kvalitativ studie om hur företag arbetar med användardata för anpassning av chatbots

Chatbots blir alltmer ledande inom kundservice och kvaliteten på dessa digitala chatbots kan vara avgörande för kundnöjdhet och företagets rykte, vilket visar på vikten av att underhålla dem. Syftet med denna studie är därför att undersöka hur företag hanterar användardata för att optimera användningen av chatbots i deras kundservice och i sin tur förbättra kundupplevelsen. För att undersöka detta

Evaluation of the production of bio-products by the thermophilic bacterium Rhodothermus marinus

In this study the thermophilic marine bacterium Rhodothermus marinus DSM 16675 was exploited for the production of biosurfactants. Different strategies employing batch, or a combination of batch and fed-batch cultivations were investigated. These cultivations were performed both on complex and defined media. The extracted crude biosurfactants were then analyzed with different methods such as FTIR,

Mödrars upplevelser kring behovet av stöd och dess betydelse vid förlusten av ett spädbarn genom intrauterin fosterdöd.

Intrauterine fetal death, where nearly 400 infants die in utero each year in Sweden, has a profound impact on the mother and her life. It is difficult for her to return to everyday life after the loss, and how she is received in her role as a mother to a stillborn child is complex. Although healthcare has good research, further studies are needed to understand the extent of needs and experiences o

Engineering HMF oxidoreductase for efficient furan building block production

As the demand for eco-friendly alternatives to traditional plastics grows, Polyethylene Furanoate (PEF) emerges as a promising solution. Derived from renewable biomass sources, PEF embodies sustainability principles by reducing reliance on finite resources and minimizing environmental impact. PEF is synthesized from 2,5-furandicarboxylic acid (FDCA), a key monomer which upon polymerization has the

Reality Check: En studie kring motivationsfaktorer för konsumtion av reality-TV

Reality-TV har uppstått som en prominent genre med en engagerad och stor publik. Denna studie syftar till att utforska motivationsfaktorer bakom individers konsumtion av reality-TV och att även undersöka potentiella skillnader i motivationsfaktorer jämfört med fiktiva program. En enkät utformades med utgångspunkt i de fem motivationskonstrukten i the Uses and Gratifications Theory (Blumler & KReality TV has emerged as a prominent genre with a dedicated and sizable audience. This study aims to explore the motivations behind individuals' consumption of reality TV and investigate potential differences in motivations compared to fictional programs. A questionnaire was created based on the five motivational constructs of the Uses and Gratifications Theory (Blumler & Katz, 1974): aff

EMBODIED ENGAGEMENTS WITH THE ECOLOGICAL CRISIS: Investigating Performative Spaces as Sites of Resistance to Capitalist Societal Norms

Although the accounts confirming that we are in the midst of an ecological crisis are undeniable, the transformative action necessary to address climate change remains elusive. Capitalist norms of economic growth, self-interest and denialism obstructs paths towards sustainability. This research illustrates how embodied engagements with the ecological crisis through artistic practices can foster mo

Exploring the influence of sustainable entrepreneurship education on sustainable opportunity recognition.

This study explores the influence of sustainable entrepreneurship education (SEE) on the ability to recognize sustainable business opportunities. Using a series of semi-structured qualitative interviews, data was collected from participants in a SEE program at Lund University. The findings reveal that SEE enhances the ability of students to identify and evaluate sustainable business opportunities

Value at risk: En empirisk jämförelse mellan svenska och finska statsobligationer

Frågan om huruvida Sveriges medlemskap i EMU har blivit mer och mer aktuell under de senaste åren. För en stat så innebär ett anslutande till en valutaunion i ett nötskal att den ger upp sin självständiga penningpolitik i utbyte mot bland annat att handel och gränsöverskridande transaktioner underlättas. En del i det kan vara en lägre uppfattning om den risk som eventuellt hör samman med en valuta

Navigating the Shift from B2C to D2C: Addressing Marketing Strategy Challenges for Credit Reference Agencies in Sweden

Detta examensarbete undersöker hur ett business-to-business (B2B) inriktat företag som utvecklar ett direct-to-consumer (D2C) segment bör anpassa sin marknadsföringsstrategi för att växa genom marknadspenetration. Författarna har undersökt ett svensk kreditupplysningsföretag, Upplysningscentralen (UC), som har expanderat sin verksamhet till konsumentmarknaderna för kreditinformationstjänster och iThis thesis explores how a business-to-business (B2B) focused company should adapt the marketing strategy when transitioning into the direct-to-consumer (D2C) market, in order to grow through market penetration. The authors have examined a Swedish credit reference agency, Upplysningscentralen (UC), having expanded into the consumer markets of credit information and identity protection services – t

Goniometric investigation of scattering from insect wings in near infrared

In recent decades, there has been significant attention on the decline in insect populations, including moths and hover flies. To tackle this issue, innovative methods such as entomological LiDAR technology have revolutionized the remote identification of free-flying insects. The distinct spectral reflection from moth and hover fly wings enables precise differentiation between species and sexes. W

The illusion of the compact and green city. A case study on the city of Malmö’s discourses surrounding the compact and green city and its inherent tensions in local sustainability planning

Cities worldwide face unprecedented challenges, demanding innovative approaches to sustainable urban development. The imperative for cities to be dense and green poses significant challenges in urban planning, underscoring the need to understand how these goals interact. This study examines the dense and green city vision in Malmö's planning documents through critical discourse analysis, focus

Osäker men motiverad

Att arbeta med motivation kan förstås ha en påverkan på både medarbetarnas produktivitet och mående. Trots de fördelar motivation kan ge har forskningen framför allt fokuserat på hur man arbetar med motivation inom kunskapsintensiva yrken och ett underskott av kunskap har skapats kring arbetsintensiva yrken. Att arbeta inom ett arbetsintensivt yrke kan ur många aspekter förstås som utmanande. Utöv

Convergence of interference term at next-to-next-to-leading order in Higgs boson to b bbar decay

Higgs boson decay to bottom, anti-bottom quarks is the major decay channel due to the fact that these quarks have a relatively high mass and the Higgs coupling to a particle is proportional to its mass. This process is difficult to detect experimentally because of the jets produced by the quarks. In computations of this decay at next-to-next-to-leading order (NNLO), there is a specific term which