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Timing of phenological events are highly related to climate and is one of the first signs of ecosystem responses to the climate change. Timing of flowering phenology is an important trait influencing the distribution and fitness of plants species. Tundra ecosystems are particularly important to study these effects due to short growing seasons, poor pollinator community and a particularly pronounce

Operant conditioning is a psychological theory about learning through positive and negative reinforcement which has been researched for decades. However, some fundamental components of this theory have not yet been thoroughly researched, such as its interaction with long-term retention and context. These components are essential if we want to understand how operant conditioning applies in everyday

The aim of this master thesis was to develop adaptive control for a quadrotor using Gaussian process regression (GP). Online regression with GPs can provide many benefits as it is a flexible non-linear regression model that can provide uncertainty measures of the estimate. However, online GP regression may also gives rise to problems. Because of the high numerical complexity of GPs, sparse approxi

Syfte: Syftet med denna studie är att undersöka om det finns några skillnader mellan hur företag i Sverige respektive Tyskland rapporterar om FN:s globala mål för hållbar utveckling. Vidare ger uppsatsen exempel på möjliga förklaringar till resultaten. Teoretiska perspektiv: Genom att kombinera två välkända teorier, nämligen legitimitets- och intressentteori, samt Varieties of Capitalism som en ko

Interactions play a crucial role in determining how galaxies evolve in terms of their morphologies and star formation histories, since the majority of the known galaxies in the nearby Universe are found to exist in groups. Compact groups of galaxies are of particular interest as they contain a small number of galaxies in dense configurations and host repeated interactions between them, enabling us

This thesis investigates internal migrant selection and migrant sorting among the Brazilian working age population between 2007 and 2014. The study tests the validity of the Borjas model, that predicts variation in migration probability across education levels. A twofold empirical analysis is performed. In the first step, a logit model is used to analyze migrant selection. The results suggest that

This study assesses the performance of buildings affected by climate change under future climate predictions for three time-periods until the end of the 21st century. Objects studied are residential multi-storey buildings, originally built before 1970 and retrofitted during the last decade. A total of four actual retrofit projects, as they were performed, in Denmark and Germany were assessed in th

Analogisk överföring undersöktes hos förskolebarn (24 månader till 55 månader) med en faktoriell tvärsnittsdesign. Analogisk överföring testades direkt efter inlärning eller ett dygn senare med en visuo-spatial uppgift. Vidare testades de kognitiva förmågorna arbetsminne, inhibering, självreglering och verbal intelligens. Studiens hypoteser var att fler barn skulle klara den direkta överföringen äAnalogical transfer was studied in preschool children (24 months to 55 months) with a factorial cross sectional design. Analogical transfer was tested directly after learning and one day later, using a visuospatial task. The cognitive abilities working memory, inhibition, self-regulation and verbal intelligence was assessed. The hypotheses were that more children would pass the direct condition th

Amelogenin, a protein that takes part in enamel development, has some interesting physicochemical properties such as the formation of nanospherical aggregates. Furthermore, its derivatives have shown regenerative properties and have already been commercialized for that purpose. Therefore, it was of interest for this project to evaluate mammalian cell attachment and proliferation on engineered vari

As the physical consequences of climate change continues to augment, possibly millions of people might be forced to migrate. Those most likely to be forced to move are people living in poor countries in the Global South where vulnerability levels are generally high and the capacity to adapt is often low due to socio-economic difficulties and political insecurity. In contrast, the countries most re

From 1953-1963 Nyasaland was a part of the Central African Federation, along with Northern and Southern Rhodesia. The establishment of the Federation was hugely unpopular in Nyasaland due to fears it would be dominated by the white settler community in Southern Rhodesia. Supporters of the Federation, in the UK and Southern Rhodesia, argued that Nyasaland would gain financially from inclusion in th

Timing är ett begrepp som är vanligt förekommande och högt värdesatt inom den afroamerikanska musiken. Trots det tycks det inte finnas en klar gemensam uppfattning kring vad begreppet egentligen innebär och i jämförelse med andra musikaliska element tycks även undervisningsmetodik i ämnet vara eftersatt. Denna studie syftar främst till att tydliggöra begreppet timing men också begreppet sväng som The term timing is often used and is highly regarded within the context of Afro-American music. Even so, there does not seem to be a clear common understanding of what the concept really means and also, in comparison with other musical elements, teaching methodology on the subject seems to be neglected. This study primarily aims to clarify the concept of timing, but also that of the term groove wh

The purpose of this study is to investigate the impact of CEO and CFO gender on firm risk-taking behavior with respect to the theory of management homogeneity and traditional risk-taking behavior differences between men and women within a market that has not instituted any gender quotas but has been successful in promoting female leadership.The results are that traditional upper echelon characteri

This thesis uses quantitative data to understand to what extend the society is divided on key issues regarding unification and culture. The analysis is based on a theory of new nationalism in Korea that was developed to describe changing attitudes of the young students, that stands in contrast to the ethnic nationalistic student movements of the 20th century. The 2018 KINU Unification Survey serve

Bland de mest kraftfulla händelser som människor har observerat är gammablixtar. Blixtarna är korta utbrott av gammastråalning som ibland dyker upp i rymden. Forskare har länge misstänkt att kollisioner mellan neutronstjärnor ligger bakom en kategori av blixtar, de korta gammablixtarna. För några år sedan bekräftades forskarnas misstankar. De kunde då, med det nya LIGO-observatoriet, observera graShort gamma-ray bursts are often observed at large spatial offsets from their host galaxies. Neutron star mergers in double neutron star binaries have also recently been confirmed as a progenitor of short gamma-ray bursts (Abbott et al. 2017). We attempt to constrain uncertainties in the evolution of burst-producing neutron star binaries by generating a distribution of burst offsets from the neutr

Gender equality is now more than ever a highly discussed topic within many different aspects of society. Also, being an entrepreneur is becoming increasingly more accessible and popular as a choice of occupation. This study aims to analyze the potential relationship between gender equality in entrepreneurship and the outcome on economic growth. By developing an index which ranks American states’ d

I denna studie har fenomenet autonoma fordon som en del av framtidens transporttjänster diskuterats och avhandlats. Autonoma fordon är en relativt ny och växande teknik inom transporttjänster, vilket ger fenomenet upphov till många intressanta och relevanta forskningsområden. Följande studie har utgått ifrån ett samhällsvetenskapligt perspektiv vad gällande implementeringen av autonoma fordon, då

As online services such as e-commerce and mobile applications keeps growing, the need of optimizing the user experience does as well. By conducting Online Controlled Experiments, companies can get an insight to which features, design choices and implementations that users enjoy the most. This projects explores two areas in relation to Return on Investment (ROI) calculations for Online Controlled E

Människan och hampan (Cannabis sativa) har en gemensam historia som går långt bak i tiden, denna historia är dock omgiven av kontroverser. Idag är Cannabis mest känt för sina psykoaktiva egenskaper och narkotika klassificering i många länder, men hampa har historiskt sett främst odlats för fiberproduktion. Denna studie undersöker historisk hampaodling i Europa och är baserad på redan publicerade dHumans and hemp (Cannabis sativa) have an ancient relationship, dating back to the beginning of recorded history. Nevertheless, controversy surrounds the antiquity of the plant. Today Cannabis is probably most famous for its psychoactive properties and illicit status in numerous countries, however hemp has primarily been cultivated as a fibre crop in the past. This study examines the European hist