Sökresultat

Filtyp

Din sökning på "*" gav 561985 sökträffar

HfO2-based memristive synapses with asymmetrically extended p-n heterointerfaces for highly energy-efficient neuromorphic hardware

The escalating energy consumption of existing artificial intelligence hardware has become a serious global issue that demands immediate action. Neuromorphic computing offers promises to drastically reduce this footprint. Here, we introduce multicomponent p-type Hf(Sr,Ti)O2 thin films for energy-efficient, resistive switching–based neuromorphic devices. We demonstrate interfacial memristors with ul

Ocean Wave Prediction for Arrays of Wave Energy Converters

Short-term wave prediction is a key enabling technology for advanced control of wave energy converters (WECs), where accurate knowledge of the incident wave field over one to a few wave periods can improve power capture, reduce structural loads, and support operational decision-making. Many existing prediction methods rely on measurements at the prediction point or dedicated up-wave sensors, which

Feature extraction and heart failure detection in ex vivo perfusion systems

This thesis investigates the detection of acute heart failure (AHF) in an exvivo heart perfusion system using hemodynamic signals. Early detection of AHF is important for improving monitoring and intervention. Experimental data was pre-processed and transformed into a beat-to-beat representation, from which physiological features were extracted. Events were labeled based on manual reductions in pu

Design Parameters for Enhanced Repairability and Remanufacturability of the Electric Front Cross Differential

This thesis investigates the remanufacturing potential of the electric front cross differential (eFXD) within the context of the circular economy (CE) and the R‑framework. Environmental assessment, mechanical validation and structured component classification are combined to identify opportunities and limitations for remanufacturing. The results show that a limited number of components, the tube h

Interaction between oxygen saturation and renal function on 30-day mortality in emergency department patients

Emerging evidence suggests that bidirectional lung–kidney crosstalk may influence outcomes, but this has not been systematically evaluated in unselected emergency department populations. We therefore examined the association between peripheral oxygen saturation (SpO₂), estimated glomerular filtration rate (eGFR), and 30‑day mortality, and tested whether the prognostic association of oxygenation wi

Evolution of the below-bandgap anisotropic refractive indices and dielectric functions of β-(AlxGa1− x)2O3 (0 < x < 0.25) determined by generalized spectroscopic ellipsometry

We determine the composition dependence of the below-bandgap anisotropic refractive indices and dielectric functions of β-(AlxGa1−x )2O3 for x up to 25% Al. We use Mueller matrix generalized spectroscopic ellipsometry and investigate a set of high quality single crystalline bulk (x = 0 %, 5 %, 10 %, 15 %, 20 %, 25 %) and thin film (4.6%, 9.7%, 12%, 15%, 16.3%, 21%) samples grown by the Czochralski

Sonic Kinesthetic Forest: Fostering Ecological Empathy

Sonic Kinesthetic Forest is an interdisciplinary research project that explores novel methodologies for studying trees and forests through embodied sound, movement and drawing practices. Our video article reflects on this interdisciplinary research through the lens of a performance piece in which embodied sound, movement and drawing practices were intricately interwoven with a forest landscape. Th

Shaping Sounds of Future Environments

This chapter presents a speculative sonic process for creatively transforming environmental sounds in response to climate scenarios. Sound and listening are explored for attuning to and expressing changing relationships in landscapes due to the effects of drought. Field recordings undertaken in landscapes of Potsdam, Germany are processed in relation to sources, patterns and environmental states t

Neuromuscular adaptation and postural muscle activity patterns during visual virtual reality stimulation : age-related differences between young and older adults

Vision provides important sensory input to postural control. Medical conditions and aging affect sensory—Central Nervous System (CNS) interactions, causing mismatches. Virtual Reality (VR) may address these by promoting recalibration from vision to other systems. Twenty-eight young adults (17 males, mean age 25.3 years) and 25 older adults (14 males, mean age 74.8 years) were included. Electromyog

Professional perspectives on roles and structural gaps in interprofessional collaboration for suicide prevention : a qualitative study

Introduction: Suicidal behavior results from a complex interplay of psychiatric, psychosocial, socioeconomic, and structural factors and requires coordinated approaches across care sectors. Interprofessional collaboration (IPC) is widely regarded as essential for bridging gaps in care, yet profession-level descriptions of how IPC is organized and where structural bottlenecks occur in suicide preve

Reducing selection bias while maintaining precision through an integrated analysis : 2-year longitudinal analysis of imaging outcomes in the SPondyloArthritis Caught Early cohort

Background: Cohort studies often use simple models, for example, completers-only or aggregated scores, to assess changes in imaging outcomes. With more data available, this introduces selection bias. Integrated analyses allow scores from multiple reading rounds; therefore, we assessed their effect on the change estimates’ precision compared with the completers-only analysis. Second, we compared ch

Viability of free-running buildings in the Nordic region

Contemporary Nordic building design prioritizes energy-efficient HVAC systems to mitigate carbon emissions. However, this approach underestimates intensifying climate risks, creating critical vulnerabilities as extreme weather and energy/resource scarcity escalate. To address this gap, a free-running building concept, eliminating heating, cooling, and mechanical ventilation, was examined for Nordi

When Places Change: Essays on Local Labor Markets and Individual Responses

This thesis consists of four self-contained empirical studies on how economic shocks and structural changes shape individual behavior and local outcomes.Paper I examines how military base closures affect young adults’ education and labor market outcomes. The results show that men respond by increasing tertiary education, while women experience improved short-term labor market outcomes, suggesting

Surface properties of spark-ablated metal oxide nanoparticles studied in-flight

Metal oxide nanoparticles are widely used in catalysis, photovoltaics, and gas sensing, where surface structure and oxidation state strongly influence performance. This work investigates how carrier gas composition, combined with in-flight heating, can be used to control the surface properties of metal oxide nanoparticles generated via the gas-phase method, spark ablation. Sn, Zn, and Al nanoparti

Interim results of EC project RRADEW : Resilience to RADiological Events in Wartime

The context of armed conflict situations presents unique challenges that can compromise the safety and well-being of both affected populations and responders in radiological and nuclear emergencies. The focus of the EU project RRADEW ‘Resilience to RADiological Events in Wartime’ (2024–2027) is to enhance nuclear Emergency Preparedness, Response and Recovery (EPR&R) systems by strengthening re

Complete fulfillment of expectations is associated with greater satisfaction after shoulder arthroplasty : results from a prospective multicenter cohort study

Background: With this study, we aim to explore pre-operative probabilistic expectations (what does the patient realistically expect) and value-based expectations (what does a patient consider important), post-operative expectation fulfillment, and the relationship with post-operative satisfaction in shoulder arthroplasty (SA) patients. We hypothesized that higher expectation fulfillment is related

Longitudinal association between sleep and Alzheimer's pathology

INTRODUCTION: Since sleep disturbance is a modifiable risk factor for Alzheimer's disease (AD), we tested associations between sleep and AD pathology in cognitively unimpaired (CU) persons. METHODS: We included 223 participants from the PREVENT-AD cohort with self-reported measures of sleep, objective actigraphy measures of sleep, and positron emission tomography (PET) scans for AD pathology quant

Quality of Life and Economic Burden in Swedish Adults with Atopic Dermatitis : A Cross-sectional Survey of Patientreported Outcomes

Atopic dermatitis (AD) is a chronic skin disease associated with impaired quality of life. Evidence from Sweden on out-of-pocket expenses and productivity losses remains limited. This study assessed the burden of AD among adults in relation to health-related quality of life (HRQoL), work productivity, activity impairment, willingness to pay for symptom relief, economic outcomes, considering comorb