I våra försök att förstå fysikens banbrytande forskningsområden, vare sig det handlar om kvantdatorer eller partikel-detektorer, slår vi ofta knut på oss själva. Det verkar därför ironiskt att knutarnas matematik utför ett övertygande ramverk för att förstå komplexa fenomen på nanoskalan. Knutar klassificeras med hjälp av topologiska invarianter - kvantiteter som förblir konstanta under jämna defoThe trimer Su-Schrieffer-Heeger (SSH3) model extends the traditional Su-Schrieffer-Heeger model by incorporating an additional lattice site per unit cell. Although it lacks chiral symmetry, the SSH3 model exhibits bulk-boundary correspondence (BBC) with topologically protected, localized edge states under open boundary conditions. This thesis investigates non-Hermitian phenomena in the anisotropic

Svenska myndigheter ska enligt vår svenska grundlag vara fristående från regeringen. Är detta fristående tillräckligt för de krav på oberoende som EU-rätten ställer? Den frågan undersöks i detta avsnitt av Sieps Podcast.

Premise of research. Selfing rates in mixed-mating plant species are often found to fluctuate greatly across time and space. Environmentally induced changes in floral traits may mediate changes in selfing rates through several mechanisms, including direct effects via changes in traits influencing autofertility rates and indirect effects via changes in traits affecting the rate of pollinator visita

With current environmental changes, evolution can rescue declining populations, but what happens to their interacting species? Mutualistic interactions can help species sustain each other when their environment worsens. However, mutualism is often costly to maintain, and evolution might counter-select it when not profitable enough. We investigate how the evolution of the investment in a mutualisti

De senaste årtiondena har samhället i stort präglats av digitalisering. Så också detaljhandeln, med en växande betydelse av digitala plattformar där människor gör sina vardagsinköp via dator, till alltmer även via mobilen. Avgörande för om människor faktiskt kan genomföra sina köp i detaljhandeln är betalningar. Betalningar har liksom detaljhandeln också blivit mer digitala, med en stadig minskninThis dissertation explores how and why certain payment methods are used in retail.Payment methods have changed in their form throughout history, and rapidly so in recent decades. Surprisingly, the treatment of payment in retail research appears detached from its purpose of use; i.e. purchasing products and services.Payment has a role to play in the digitalisation of society and is part of shaping

A small, nucleotide-binding domain, the ATP-cone, is found at the N-terminus of most ribonucleotide reductase (RNR) catalytic subunits. By binding adenosine triphosphate (ATP) or deoxyadenosine triphosphate (dATP) it regulates the enzyme activity of all classes of RNR. Functional and structural work on aerobic RNRs has revealed a plethora of ways in which dATP inhibits activity by inducing oligome

Diabetes mellitus (DM) is a risk factor for the development of ulnar nerve entrapment (UNE). Differences in surgical outcomes for UNE between patients with and without DM have been reported, but studies on presurgical management are scarce. This study aimed to evaluate the presurgical management of UNE in patients with (DM diagnosis < 2 years of UNE diagnosis) and without DM regarding the level of

Studien undersöker hur ensemblelärare på gymnasiet tolkar begreppet delaktighet och hur de tillämpar det i sin undervisning. Genom intervjuer med tre musiklärare i ensemble på tre olika gymnasieskolor, observationer på musiklärarnas lektioner samt litteraturstudier har vi studerat hur ensemblelärare tolkar begreppet delaktighet i förhållande till sin undervisning samt hur deras arbete påverkar förThe study examines how ensemble teachers in high school interpret the concept of participation and how they apply it in their teaching. Through interviews with three music teachers in ensemble at three different high schools, observations of the music teachers´ lessons, and literature studies, we have investigated how ensemble teachers interpret the concept of participation in relation to their te

Rapid deforestation has been well-documented in Colombia after the 2016 peace agreement with FARC. While many analysis using remote sensing identify land cover change, structural connectivity variables are less studied for understanding landscape transformation. In this work, we used data from the Landsat archive from 2011 to 2021, the Continuous Change Detection and Classification algorithm (CCDC

Review of Klas Gustafson's biography of Swedish singer Monica Zetterlund, "Enkel, vacker, öm".

Migratory birds may either upregulate their immune system during migration as they might encounter novel pathogens or downregulate their immune system as a consequence of trade-offs with the resource costs of migration. Support for the latter comes not least from a study that reports a positive correlation in autumn migrating birds between fuel stores and parameters of innate and acquired immune f

Doctoral education has been shaped by a continuous interaction between the research community and representatives of the governmental authorities. In Sweden, doctorates were organised into structured educational programmes in 1969. In this study, the development of doctoral education in Medical Radiation Physics at Lund University, Sweden, was analysed over approximately 50 years, in terms of quan

The formation and evolution of coastal dunes result from a complex interplay of eco-morphodynamic processes. State-of-the-art models can simulate aeolian transports and morphological dune evolution under certain conditions. However, a model combining these processes for coastal engineering applications was not yet available. This study aims to develop a predictive tool for dune development to info

How do Swedes, who are not exposed to administrative routines of reporting race and ethnicity, perceive, and categorize faces with different phenotypical features? This study examines identity contestation that can occur and address how race affects the way you are perceived as Swedish. A sample of Swedish participants were asked to assign racial categories to images of faces with different phenot

Objective A low expression of club cell secretory protein (CC16) and high levels of proinflammatory cytokines at preterm birth are associated with airway inflammation and more severe neonatal lung disease. The present study aimed to investigate if low levels of CC16, proinflammatory cytokines and vascular endothelial growth factors (VEGF) in tracheal aspirate early after birth were associated with

ABSTRACT Background: In the growing body of knowledge on how human environment impacts population health, the transport sector is observed to occupy strategic position. However, the transport corridors equally serve as sources of socio-economic challenges. Such is the case of the transport sector’s contribution to the HIV/AIDS epidemic. In this respect, truckers are observed to carry a disproporti

Integrating media studies with history, Media Tactics in the Long Twentieth Century explores the dynamic relationship between tactics and strategies in recent history. Drawing on examples from a range of different countries and world regions, and looking at the infrastructures, entanglements, and institutions involved, the volume makes a strong case for media tactics as a new field of scholarly in

The manifestation of extreme solar proton events (SPEs) in Beryllium-10 (10Be) ice core data contains valuable information about the strength and incidence of SPEs or local characteristics of the atmosphere. To extract this information, the signals of enhanced production of cosmogenic 10Be due to the SPEs have to be detected, hence distinguished from the variability of the background production by

Background: Approximately 7.6% of children are diagnosed with attention deficit/hyperactivity disorder (ADHD), and sleep impairments affect 25–85%. There is a noticeable lack of research on girls and sex differences. The aim of this study was to examine sex differences in children with uncomplicated ADHD and sleep problems. Methods: Cross-sectional baseline data were retrieved from a randomized co

OBJECTIVE: Disease recurrence, particularly intravesical recurrence (IVR) after radical nephroureterectomy (RNU) for upper tract urothelial carcinoma (UTUC), is common. We investigated whether violations of onco-surgical principles before or during RNU, collectively referred to as surgical violation (SV), were associated with survival outcomes. Material and methods: Data from a consecutive series