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In this study the three-factor model of Fama and French (1992; 1993) is evaluated on portfolios of Swedish stocks. Both a cross-section and time series approach are used to evaluate the model. The results show that beta, size, and book-to-market are significant variables in explaining excess returns of Swedish stock portfolios. The three-factor model can explain variations in stock returns on the

Under perioden 2020-2023 har ett antal offentliga koranbränningar i Sverige föranlett häftiga reaktioner såväl nationellt som internationellt. Många förslag på hur den spända situation som härvid har uppkommit lämpligast ska lösas har framförts. I avsaknad av hädelselagstiftning har förslag lyfts att koranbränningarna möjligtvis skulle kunna lagföras som antingen hets mot folkgrupp eller förargels

One way to increase the flexibility of industrial robots in manipulation tasks is to integrate additional sensors in the control systems. Cameras are an example of such sensors, and in recent years there has been an increased interest in vision based control. However, it is clear that most manipulation tasks can not be solved using position control alone, because of the risk of excessive contact f

In this work mathematical models of a granulating process plant have been determined. The plant is situated at the SUPRA company, Landskrona Sweden. The product studied is a fertilizer NPK. In the process there are oscillations in the material flow. The models will be used an attempt to explain and hopefully control the process better.

In the first stage it was tried to obtain a physical

In applications of real time gesture detection on devices which have cameras and limited power supply it is important to consider both robustness and maintaining a low power consumption. A well explored approach is the use of cascades of boosted classifiers. As retraining is a very cumbersome process, online environment adaption would be an appealing approach to counter situations where the booste

In the city of Malmö urban sustainability has been a front figure in municipality development strategies. Despite this, large shopping malls are approved by the municipality and sustain patterns of consumerism. This lead into the question of how the municipality is working for sustainability within consumption, and particularly within one of the worlds most polluting industries, the clothing indus

Decentralized peer-to-peer networks offer several benefits over the today more commonly employed centralized client-server networks. Peer-to-peer networks allow for seamless distribution of web content over all participating nodes. This makes the hosting and access of web content much more fault tolerant, secure, faster and cheaper. However, today's peer-to-peer networks suffer from the inabil

The amount of data produced is growing rapidly and organizations are struggling to make use of the generated data from the vast amount of sources. Analyzing and interpreting data to find patterns and trends has become a competitive advantage for companies working with customer oriented operations. Many previous studies have shown the value potential of working with big data. In order to create val

Neutron spectroscopy uniquely and non-destructively accesses diffusive dynamics in soft and biological matter, including for instance proteins in hydrated powders or in solution, and more generally dynamic properties of condensed matter on the molecular level. Given the limited neutron flux resulting in long counting times, it is important to optimize data acquisition for the specific question, in

Although it is widely recognized that migration is socially transformative, the potential contributions of migrants to transformations towards sustainability in their destination areas are often overlooked in mainstream discourse on environmentalism and sustainability. Here we seek to identify current narratives of migrants and sustainability across individual, urban, and national scales. Migrants

When sex chromosomes evolve recombination suppression, the sex-limited chromosome (Y/W) commonly degenerate by losing functional genes. The rate of Y/W degeneration is believed to slow down over time as the most essential genes are maintained by purifying selection, but supporting data are scarce especially for ZW systems. Here, we study W degeneration in Sylvioidea songbirds where multiple autoso

In this study, the laser induced fluorescence lifetime of Ni atoms in ambient air with presence of a plasma discharge was measured for the first time. Free Ni atoms were generated in air at a pressure of 1 bar by spark plug discharges driven by an inductive coil. The Ni atoms were excited at the 336.957 nm absorption line by a 336.96 nm, 90 ps laser pulse and the resulting temporally resolved deca

Background. In some situations, and particularly when intoxications are suspected, it would be advantageous if medicines and drugs of abuse could be swiftly detected in serum or urine. Material and methods. The Department of Clinical Pharmacology at St. Olav University Hospital has since 2004 been developing a comprehensive toxicology service (at all hours 7-days/week) for immediate quantitative a

The sector for private domestic services in Sweden has grown rapidly since the RUT tax deduction was introduced in 2007. Already in the government proposition (2006/07:94) it was suggested that services provided by the expanding market would come to replace parts of the publicly funded elderly care, thus marking a shift in the organisation of care in the welfare state. Today we begin to see the ef

Cholesterol is an essential membrane component enriched in plasma membranes, growth cones, and synapses. The brain normally synthesizes all cholesterol locally, but the contribution of individual cell types to brain cholesterol metabolism is unknown. To investigate whether cortical projection neurons in vivo essentially require cholesterol biosynthesis and which cell types support neurons, we have

Chirality is omnipresent in the living world. As biomimetic nanotechnology and self-assembly advance, they too need chirality. Accordingly, there is a pressing need to develop general methods to characterize chiral building blocks at the nanoscale in liquids such as water─the medium of life. Here, we demonstrate the chiroptical second-harmonic Tyndall scattering effect. The effect was observed in

The addition of metal intercalants into the van der Waals gaps of transition metal dichalcogenides has shown great promise as a method for controlling their functional properties. For example, chiral helimagnetic states, current-induced magnetization switching, and a giant valley-Zeeman effect have all been demonstrated, generating significant renewed interest in this materials family. Here, we pr

Acoustic streaming shows great potential in applications such as bubble dynamics, cell aggregation, and nanosized particle isolation in the biomedical and drug industries. As the acoustic shock distance decreases with the increase of incident frequency, the nonlinear propagation effect will play a role in acoustic streaming, e.g., Eckart (bulk) streaming at a few gigahertz. However, the theory of

Escape from cytotoxic T lymphocyte (CTL) responses toward HIV-1 Gag and Nef has been associated with reduced control of HIV-1 replication in adults. However, less is known about CTL-driven immune selection in infants as longitudinal studies of infants are limited. Here, 1,210 gag and 1,264 nef sequences longitudinally collected within 15 months after birth from 14 HIV-1 perinatally infected infant