A combination of searches for Higgs boson decays into a visible photon and a massless dark photon (H → γγd) is presented using 139 fb−1 of proton-proton collision data at a centre-of-mass energy of s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on the Standard Model Higgs boson decay branching ratio is determined to

In this work, numerical simulation was carried out to study the injection and mixing of ammonia solution spray in the exhaust pipe of diesel engines. The ammonia solution was injected into the hot gas of 623 K. The spray was vaporized into gas and mixed with the hot exhaust gas and together the mixture was transported in the exhaust gas pipe downstream where a selective catalytic reduction (SCR) s

Color perception has been a traditional test-case of Whorf ’s principle of linguistic relativity (Whorf, 1940/1956), which states that speakers of different languages evaluate perceptual contrasts differently, influenced by language-specific partitions of reality. Early empirical studies showed that speakers of Zuni, a language that does not lexically separate the colors ‘orange’ and ‘yellow’ but ins

The interplay between morphological (structures) and behavioral (acts) signals in contest assessment is still poorly understood. During contests, males of the common wall lizard (Podarcis muralis) display both morphological (i.e. static color patches) and behavioral (i.e. raised-body display, foot shakes) traits. We set out to evaluate the role of these putative signals in determining the outcome

As a part of the LTH Docent Course Spring 2024, this group project interviewed both co-supervisors and doctoral students to understand the roles of co-supervisors in doctoral studies. The study revealed significant variation in co-supervisors' roles across different projects, as confirmed by both students and co-supervisors. The research focused on co-supervisors' activities and levels of engageme

The aim of this review is to raise awareness and knowledge among healthcare professionals and policymakers about late adverse effects in survivors of childhood leukemia. With contemporary treatment, over 90% of children with acute lymphoblastic leukemia (ALL) and over 60% with acute myeloid leukemia (AML) are cured. Large cohort studies demonstrate that 20% of ALL and most AML survivors have at le

A search is presented for non-resonant Higgs boson pair production, targeting the bbZZ, 4V (V = W or Z), VVττ, 4τ, γγVV and γγττ decay channels. Events are categorised based on the multiplicity of light charged leptons (electrons or muons), hadronically decaying tau leptons, and photons. The search is based on a data sample of proton-proton collisions at s = 13 TeV recorded with the ATLAS detector

Software development is a complex activity that needs a lot of tool assistance. Over the years there has been a lot of effort put into development of automated assistance to help with activities such as detection of issues via program analysis, or refactoring of code. Recently, the landscape of developer tool assistance is being disrupted with the entry of AI tools, such as Copilot and ChatGPT, po

Background: The delineation of intraprostatic lesions is vital for correct delivery of focal radiotherapy boost in patients with prostate cancer (PC). Errors in the delineation could translate into reduced tumour control and potentially increase the side effects. The purpose of this study is to compare PET-based delineation methods with histopathology. Materials and methods: The study population c

The Covid-19 pandemic sparked unprecedented political responses dramatically affecting societies, markets, and the lives of individuals. Under great uncertainty and turbulent conditions, governments adopted far-reaching political interventions to curb the pandemic. These interventions might therefore be expected to challenge key ideas underpinning liberal democracy. We analyze and compare how the

In the past decade, studies have examined how the Russian-speaking minority reacted to changes in citizenship, language, and memory politics. However, one aspect that has not been studied is the response to educational policy changes during an ongoing conflict. This study investigates the resistance strategies of Russian-speaking mesolevel actors against minority education policy changes before an

This thesis displays how Danish courts represent Danish children of foreign fighters situated in the al-Roj camp in Syria. Through the use of Carol Bacchi’s ‘What’s the problem represented to be?’-approach to poststructural policy analysis in combination with a theoretical framework of children born of war (CBOW) and the Copenhagen School’s theory of securitization, the thesis answers two main que

This thesis explores the intertwinement between the commoning practices of an urban permaculture community garden and more-than-human relations through multispecies ethnography in Copenhagen, Denmark. By centering the lived experiences and practices of gardeners, this study learns from and illuminates real-life practices and perspectives on what it means to be entangled in the ecosystems. Through

The following thesis seeks to explore the role of myth-making and securitisation in the United Kingdom’s ontological security and identity formation, as seen in their discourses surrounding security and the normalisation of far-right imaginaries and sentiments. It uses the United Kingdom as a case study in lieu of studying the larger phenomena of how national identity has been framed in security d

A computer-assisted language learning software for mobile devices (MAC) is presented, that was aimed to helping speakers acquire speech contrasts not native to their own language. The software is based on the high variability phonetic training (HVPT) technique. An overview of the software is given, followed by results from an efficacy study. Two groups using slightly different variations of the MA

A search for the nonresonant production of Higgs boson pairs in the Formula Presented channel is performed using Formula Presented of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. The analysis strategy is optimized to probe anomalous values of the Higgs boson self-coupling modifier Formula Presented and of the quarti