Search results

Generering av volatilitetsytor är en väsentlig del i prissättning av optioner. Dagens modeller är mycket komplexa och saknar egenskapen att kunna representera alla möjliga ytor, därför ses neurala nätverk som ett alternativ. I denna rapport undersöker vi användbarheten av just Variational Autoencoders på aktiemarknaden.This study presents an in-depth exploration into the utilization of Variational Autoencoders (VAEs) for modeling and completing implied volatility surfaces within the context of the index equities market, a crucial aspect of option pricing. Moreover, our study examines the predictive capabilities of neural networks concerning fluctuations in spot prices, with a specialized spot model calibrated to

Since habitat loss has been a major threat to the European tree frog, conservation efforts are primarily focused on increasing the pond area by constructing new ponds and restoring the existing ones. However, emerging threats within the breeding habitats, such as the presence of highly competitive species, is important to consider. One such highly competitive species for the European tree frog in

The purpose of this thesis is to develop knowledge about visual information seeking and how it might be affected by socio-technical circumstances, with its focus on GeoGuessr players’ research through Google Street View. The study asks two research questions: 1. How do GeoGuessr players use Google Street View to do research? and 2. How can Google Street View’s socio-technical circumstances affect

To escape competition for food, South African dung beetles roll balls away from the dung pile of origin along straight-line paths. To keep their desired courses, the beetles rely on flexible integration of external orientation cues. This supports robust orientation even under challenging daytime conditions. Here, I studied the orientation precision driven by this flexible cue integration in the du

Föreställ dig att du närmar dig en dörr och den låser upp sig automatiskt utan att någonsin veta exakt vem du är? I examensarbetet har vi utforskat huruvida detta är genomförbart och vilka tekniska finesser möjliggör att en användare kan autentisera sig på ett säkert och integritetsbevarande sätt. I takt med att vår värld blir alltmer digitaliserad ökar även behovet av säkerhetssystem som skyddaThis thesis investigates the application of the Cheon-Kim-Kim-Song (CKKS) scheme in designing a privacy-preserving biometric authentication system in line with ISO 24745:2022 standard. Utilizing the Microsoft SEAL library the thesis integrates state-of-the-art facial recognition models to design client-to-cloud and cloud-to-client authentication systems. The solution is implemented in C++ and is t

Abstrakt Bakgrund: Ett övergripande mål inom förlossningsvården är att mor och barn ska må bra och att kvinnan ska få en positiv förlossningsupplevelse och en förlossning med så få interventioner som möjligt. Enligt kompetensbeskrivning för legitimerad barnmorska ska barnmorskan ha kompetens att bedöma förlossningens progress och identifiera avvikelser samt bedöma behov av vårdåtgärder. Det vanli

The harbour porpoise (Phocoena phocoena) is elusive and challenging to study. Recent reports indicate negative population trends in the Belt Sea population, which is found around the peninsula of Kullaberg in southern Sweden. In this study, the driving factors of the small-scale distribution of porpoises around Kullaberg were investigated by use of an unmanned aerial vehicle (UAV). Over 17 weeks f

This thesis investigates how young men who have completed military service emotionally navigate within the discourse of the duty to potentially kill or die for the nation. With a poststructuralist point of departure and a feminist theoretical framework of militarisation, this study explores how a militarised discourse of life and death becomes meaningful for its subjects. Employing an interpretati

This study examines the relationship between various types of external support and the duration of intrastate conflicts. Between 1975 and 2017, the majority of conflicts received external support in one shape or form and the effects of internationalising conflicts through the provision of external support are multiple. Existing literature has found that external involvement generally prolongs the

This thesis examines gendered constructions of military women, through the portrayal of female soldiers in images published on social media by Nato and the Swedish armed forces(SAF). Specifically, the data is made up of images that have been published after Sweden’s appeal to become a Nato member. This case is approached through critical feminist theory, particularly through the lens of Megan MacK

This thesis studies organizational change in the peacebuilding organization the School for Peace. It asks the question: What shapes organizational change in the School for Peace? Being located in Israel’s only peace bubble, the School for Peace presents as an unusual case of peacebuilding in unique conditions. To understand reasons for change and evolvement of the organization’s practice – as well

Psykisk ohälsa klassas idag som ett av de stora folkhälsoproblemen och det har gradvis skett en kraftig ökning av den andel som söker vård (OECD, 2015). Tillgången till psykologisk behandling är idag begränsad till följd av bristen på kvalificerad personal inom området. Individuell terapi är kostsam för den skattefinansierade sjukvården, vilket framhäver betydelsen av gruppterapi som en kostnadsefMental health remains a major public health concern, with a notable rise in treatment-seeking individuals (OECD, 2015). However, limited access to psychological interventions persists due to a shortage of qualified professionals. Given the excessive cost of individual therapy within publicly funded healthcare systems, the focus on cost-effect group therapy becomes imperative (Sundquist et al., 201

To achieve established climate objectives, Sweden must effectively target its carbon-intensive steel industry. This study offers a social perspective on the Swedish steel industry's decarbonization, exploring how workers’ identities shape their experience of the transition. Social identity theory is utilised to explore what elements shape steelworkers’ collective and occupational identities in

Intergenerationella trauma, hur tidigare generationers traumatiska upplevelser påverkar nästkommande generationerna, har blivit ett växande intresseområde för olika discipliner och är relevant för psykoterapeuter. Följande studies syfte var att undersöka psykodynamiskt inriktade psykoterapeuters förståelse och arbete med intergenerationella trauman utifrån en kvalitativ ansats. I studien redovisasIntergenerational trauma, how previous generations traumatic experiences effect the coming generations, has become an increasing area of interest for different disciplines and is relevant for psychotherapists. The aim of this study was to explore psychodynamic oriented psychotherapists understanding and work with intergenerational trauma within a qualitative framework. Five psychotherapists experi

Magnesium är en silvervit metall med unika egenskaper som gör den väldigt intressant. Metallen är bland de lättaste med en densitet på 1.74 g/cm3, återvinningsbar och leder ström. Magnesium är biologiskt nedbrytbart i kroppen och anses därmed vara en utav de främsta kandidaterna för biomedicinska implantat. En utav utmaningarna med användning av magnesium som implantat är dess begränsande inneboenMagnesium alloys are promising candidates for biomedical implants due to their ability to dissolve in the human body, which improves the surgical procedures making a secondary surgery to remove the implant unnecessary. However, one of the main challenges magnesium alloys faces in terms of an implant is their inferior strength compared to such permanent implant materials as stainless steel and tita

This thesis investigates the Hong Kong government’s discursive framing of the 2019-2020 protests. By applying the Copenhagen School’s securitization theory on a previously untested case, it finds that the Hong Kong government framed the protests as violent, colluding with foreign actors, and with aims to cause harm. Through this portrayal, the government claimed the Hong Kong society needed defend

Imagery Rescripting (IR) är sedan decennier en etablerad psykoterapeutisk intervention för att minska kliniska symptom associerade med mentala bilder. I den här systematiska litteraturöversikten studerades åtta studier relaterade till psykoterapi med Imagery Rescripting vid PTSD-relaterade mardrömmar, i syfte att lyfta fram den senaste aktuella kunskapen inom IR i psykoterapi, med fokus på mardrömImagery Rescripting (IR) has for decades now been an established psychotherapeutic intervention to reduce clinical symptoms associated with mental images. In this systematic literature review, eight studies related to psychotherapy with Imagery Rescripting in PTSD-related nightmares were studied, with the aim of highlighting the latest current knowledge within IR in psychotherapy with a focus on n

The US has for many years had a strong relationship with Israel. However, in this relationship something does not add up; The US presents itself as a strong defender of human rights and liberty, and at the same time they have this strong relationship with Israel, who has been violating the rights and liberties of Palestinians for many years now. So how come the US has this strong relationship with