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Testosterone is the main androgen affecting sexual differentiation in-utero. According to the twin testosterone transfer hypothesis, a female fetus sharing uterus with a male is exposed to higher testosterone levels. Likewise, a male fetus sharing uterus with another male is exposed to higher levels. In this short thesis, wages of twins in opposite-sexed pairs are compared to wages of twins in sam
This paper aims to better understand how contraceptive uptake is influenced by both individual and environmental factors, specifically in sub-Saharan Africa, by comparing Uganda and Kenya as examples of different policy environments. Implementing a literature review and statistical regression, this paper analyses how various factors (including indicators of gender equality, family planning exposur
A hydraulic system is designed to transport fluid power over large distances, from pumps to actuators where the fluid power is transformed to mechanical power. The submarines, built and designed by Saab Kockums, utilises such systems. There are, however, challenges as the hydraulic pumps consume much energy, and the system accumulators command significant space. As both energy and space are limite
Immigration and its impact on education is a highly discussed and debated topic. Particularly, regarding how the presence of immigrant students influences academic performance, labor market outcomes and integration into the host country. This paper investigates the impact of immigrant students on the educational outcome of their peers in Australian schools. We use data from the PISA surveys for th
In the framework of this thesis, the optimization of the etching process of GaN for FinFET applications has been investigated. FinFETs are transistors with a vertical architecture in the shape of fins. These fins are fabricated by etching a pattern into a GaN substrate. The etching is carried out in two steps, a dry etch and a wet etch. In this thesis, these etching steps have been carried out whi
Two Brief Implicit Association Tests (BIAT) were conducted in order to explore the relation between sexual orientation and gender attitudes. It was tested if gay men show a stronger positive implicit preference for males than females, compared to straight men. Concerning negative attitudes, it was hypothesized that gay men show – compared to straight men – a less negative implicit attitude toward
Throughout history, changes have occurred in the energy system, where social and economic factors have been identified as drivers for these changes. The purpose of this study is to investigate whether crises, financial crises and energy supply crises, have been drivers for changes in the energy system in Sweden for the period 1900-2013. To investigate these changes, energy prices is measured as th
This thesis aims to investigate the impact of domestic- and foreign monetary policy on stock returns of Swedish firms, currently listed at the Nasdaq Large Cap. Daily stock returns are regressed against FOMC- and Riksbank policy changes respectively on the day of their announcements, using a fixed effects model. Control variables and time dummies are included in the model to account for changing c
As companies compete on the global market with an increasing amount of competitors trying to win market shares the need for an increasingly effective production becomes apparent. By utilizing the correct indicators the company can identify and improve their weaknesses to becoming more effective. The project is performed at five of Alfa Laval’s production sites, 1, 2, 3, 4 and 5. The study is also
Amidst a climate and biodiversity crisis, transitioning from fossil fuels to renewable energy sources has become imperative. On the Åland Islands, planned large-scale offshore wind farms offer potential economic growth but entail environmental and social impacts. This study investigates the discourses of renewable energy transitions on Åland using a political ecology framework for energy transitio
This thesis investigates frictional effects on the stabilization of a rotating inverted pendulum. Because of friction, limit cycles arise when trying to stabilize the inverted pendulum. The stabilization is done using linear state feedback. For estimation of the states, Kalman filters are used. Both real-time experiments and simulations are performed. Two friction models are used, one classical wi
This paper investigates the L2 acquisition of clausal syntax in post-puberty learners of German and Swedish regarding V2, VP headedness and verb particle constructions. The learner data are tested against L2 theories according to which lower structural projections (VP) are acquired before higher functional projections (IP, CP), VP syntax is unproblematic (invulnerable), but where grammatical opera
In the process of constructing a confidence region induced by the Wilcoxon two-sample test ties always appear. We show that, for various ways of handling ties, the confidence region will be an interval.
The missed opportunity cost (MOC), i.e., all foregone alternatives while foraging in a patch, is an important aspect of the cost-benefit analysis of foraging patch use. When making between-environment comparisons it will often be the most important factor influencing behavior, but it has received less interest than other foraging costs. In this paper, we focus on differences between individuals li
Popular Abstract in Swedish Inflammation är vävnadens svar på yttre störning och syftar till att eliminera främmade ämnen såsom bakterier men under vissa omständigheter initieras den inflammatoriska reaktionen av ofarliga substanser eller för starkt mot patogener och kan därmed orsaka vävnadsskada och är en underliggande mekanism vid många vanliga sjukdomar inkluderande allergier, blodförgiftning Leukocyte recruitment is considered to playa key role in numerous inflammatory diseases. Tissue accumulation of Jeukocytes is a multi-steps process comprising rolling, adhesion and transmigration. This process depends on the function of several different cells, including leukocytes, endothelial cells, mast cells and macrophages as well as a wide spectrum of inflammatory mediators, such as TNF-alph
On the Road is a book about travels and about travellers. The book contains articles written to honour Lars Larsson, Professor of Archaeology at Lund University, Sweden, upon the occasion of his 60th birthday. Lars Larsson is a scholar who has been particularly active in extablishing and maintaining contact with colleagues and departments worldwide.The fifty-three articles illustrate the complexit
Novel experimental results on mirror nuclei in the sd and fp shells are presented. Their respective Mirror Energy Difference (MED) diagrams are interpreted by means of large-scale shell-model calculations. A unique way of extracting effective charges from isospin symmetry studies is also discussed.
Purpose – The purpose of this paper is to propose a framework of the potential benefits of asset visibility in the context of returnable transport items (RTI), and uses the framework to examine the effect of asset visibility on the management of RTI systems. Design/methodology/approach – A combined case study and simulation approach was used. A case study was performed to identify and understand
In principle, methods of testing the reliability and safety of constructions are designed with the aim of representing critical conditions for their use. Because of variations within technical systems, including the one for which a certain test was once developed, the validity of the method also varies. The adoption of a standardized test for different applications had to be based on the assumptio
