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This thesis makes a contribution to matching theory. It consists of five self-contained papers. It is a study predominately on the existence of stable outcomes. These are desirable both from a practical and a theoretical standpoint. Matching theory has grown in importance in recent years following its successful applications to, for instance, kidney exchange, the National Resident Matching Program
This thesis is about the flight of vertebrates and the studies of different modes of flight. Flight has always fascinated mankind and this fascination gave inspiration for our attempts at flying. Yet there are many different modes of flight among vertebrates and this thesis focuses mainly on the flapping flight of bats and intermittent flight of birds, as well as compares some of the factors conce
Popular Abstract in Swedish I Sverige och Norden har elproduktion traditionellt skett med huvudsakligen vattenkraft och kärnkraft. Detta håller dock på att förändras i takt med en allt större vindkraftsutbyggnad. Vindkraften skiljer sig i vissa avseenden från de traditionella produktionsslagen, ett av dessa är hur anslutningen till elnätet är utformad. Detta innebär att vindkraften, sedd från näteTraditionally the predominant generation has been large synchronous generators providing the system inertia. Nowadays when wind power and other non-synchronously connected units displaces this synchronous generation, the system inertia is reduced. Hence higher rate of change of frequency and larger frequency deviations are expected. This thesis deals with the impact on rate of change of frequency
BACKGROUND: Participants' study satisfaction is important for both compliance with study protocols and retention, but research on parent study satisfaction is rare. This study sought to identify factors associated with parent study satisfaction in The Environmental Determinants of Diabetes in the Young (TEDDY) study, a longitudinal, multinational (US, Finland, Germany, Sweden) study of children at
Background: Rectal cancer treatment has improved through important incremental surgical and oncological developments over the past decades. Localized disease is highly treatable with multimodal surgical and oncological therapy. Prognosis is dependent on several factors with tumour stage at diagnosis being the most important. Furthermore, curative treatment is highly dependent on radical surgical r
During 2010-2013, we investigated the effects of stump harvesting on greenhouse gas (GHG) fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) with the flux-gradient technique at four experimental plots in a hemiboreal forest in Sweden. All plots were clear-cut and soil scarified and two of the plots were additionally stump harvested. The two clear-cut plots served as control plot
The medial temporal lobe (MTL) is connected to the rest of the brain through two main networks: the anterior-temporal (AT) and the posterior-medial (PM) systems. Given the crucial role of the MTL and networks in the physiopathology of Alzheimer's disease (AD), the present study aimed at (1) investigating whether MTL atrophy propagates specifically within the AT and PM networks, and (2) evaluating
The aim of the present European Stroke Organisation guideline is to provide clinically useful evidence-basedrecommendations on the management of patients with intracranial atherosclerotic disease (ICAD). The guidelines wereprepared following the Standard Operational Procedure of the European Stroke Organisation guidelines and accordingto GRADE methodology. ICAD represents a major cause of ischemic
Utvärderingen visar att ersättningar för att sköta betesmarker och slåtterängar har en positiv men begränsad effekt på biologisk mångfald i form av fågelfauna och en sammansatt landskapsindikator. Andra stöd och ersättningar som utvärderades har mindre betydelse för dessa indikatorer. Utvärderingen poängterar dock behovet av förbättrad övervakning och data som möjliggör mer detaljerade utvärderingWe have evaluated the impact of the Rural Development Programme 2014–2022 and its support of measures benefitting biodiversity. Bird population sizes, using the Farmland Bird Index (FBI), serve as the main indicator of biodiversity, but the High Nature Value Farmland (HNV) indicator is also used. Our conclusions are:• A combination of approaches is required to evaluate the effects of agrienvironme
We report 17 new solar activity cycles with periodicities ranging from 1,700 to 18,000 years. Using Bayesian spectral analysis we determined for each cycle period, amplitude and phase for the past 145,000 years. These results were obtained by analyzing 10Be in the 2775 m long EDML ice core from Dronning Maud Land, Antarctica. In addition, we have augmented the 10Be data with synchronous ice accumu
Background: Vasovagal syncope (VVS) is a common yet challenging condition with limited effective treatments. Elastic compression stockings (ECS) have been proposed as a potential therapy, but their real-world effectiveness remains unclear. Objectives: This study sought to compare the effectiveness of lower extremity compression with thigh-high ECS vs sham stockings for the prevention of VVS recurr
För att främja ett aktivt och hälsosamt åldrande (AHA) är det avgörande att förstå hur olika generationer använder digitala teknologier, då dessa verktyg blir en alltmer integrerad del av vardagen. Detta avhandlingsprojekt undersökte teknikanvändning bland kvinnor och män i tre åldersgrupper som representerar olika generationer (30–39, 50–59 och 70–79 år), med fokus på attityder, användningsmönsteTo promote active and healthy ageing (AHA), it is essential to understand how different generations engage with digital technologies, as these tools are becoming increasingly integral to everyday life. This thesis project explored technology adoption among men and women from three age groups representing different generations (30–39, 50–59 and 70–79 years), focusing on attitudes, usage patterns, a
Disruptions in circadian rhythm, partly controlled by the hormone melatonin, increase the risk of type 2 diabetes (T2D). Accordingly, a variant of the gene encoding the melatonin receptor 1B (MTNR1B) is robustly associated with increased risk of T2D. This single-nucleotide polymorphism (SNP; rs10830963; G-allele) is an expression quantitative trait locus (eQTL) in human pancreatic islets, conferri
We assessed hepatocellular carcinoma (HCC) risk associated with smoking and alcohol consumption and their interactions, using both questionnaire data and objective serum biomarkers. Information on smoking and alcohol consumption was collected at baseline from 450,112 participants of the EPIC cohort, among whom 255 developed HCC after a median follow-up of 14 years. In a nested case–control subset
Life-history strategies emerge from eco-evolutionary constraints, where organisms allocate limited resources to growth, survival, and reproduction, resulting in trade-offs such as the growth–survival trade-off. There is still a limited understanding of whether and how disturbance regimes and successional stages might mediate such trade-offs, with potential consequences for species population dynam
A substantial external force transmitted to the brain may cause a severe traumatic brain injury (sTBI) , resulting in structural brain damage and/or functional impairment. Despite progress in management, traumatic brain injury remains a major cause of severe disability and death. This thesis evaluates treatment strategies and novel interventions in children and adults with sTBI and comprises the f
Previous studies have shown that increased incorporation of odd chain saturated fatty acids (OCFAs) into plasma phospholipids is associated with a lower future risk of developing type 2 diabetes and that decreased levels of OCFAs are linked to increased insulin resistance. Since the β-cell plays a pivotal role in the progression of type 2 diabetes it is of interest to investigate if elevated level
Oerhörda mängder varor kommer till EU:s gränskontroller varje dag. Kontrollerna bör hanteras snabbt och effektivt för att attrahera handel med vår union – och samtidigt hålla goda standarder vad gäller kontrollen av säkerheten och lagligheten av de produkter som förs in i EU. Problem kan uppstå då misstankar väcks om att varor under transit - trots angivelse om slutlig destination utanför EU – komAn incredible amount of goods arrive at the EU border controls everyday. The controls have to be performed quickly and efficiently in order to attract trade with our union – at the same time maintain good standards safeguarding the security and legality of products that cross the EU border. Problems can occur when supsicion arises that goods in transit – despite information about a final destina
