In this work, we consider the problem of localizing multiple signal sources based on time-difference of arrival (TDOA) measurements. In the blind setting, in which the source signals are not known, the localization task is challenging due to the data association problem. That is, it is not known which of the TDOA measurements correspond to the same source. Herein, we propose to perform joint local

The incidence of papillary thyroid cancer (PTC) has been steadily rising, though the underlying mechanism remains unclear. This study aims to elucidate the biological role of TM4SF4 in the PTC progression. Our differential expression analysis indicated that TM4SF4 was significantly upregulated in PTC, which was corroborated in both our local cohort and the data from Human Protein Atlas. Additional

Therapies derived from substances of human origin (SoHOs) such as organs, cells, and tissues provide life-saving or life-changing treatment for millions of people worldwide each year. However, many people lack timely access to SoHO-based therapies because of insufficient supplies of these exceptional health resources and/or broader barriers in access to healthcare. Despite well-established governm

Distributed massive multiple-input multiple-output (D-MIMO) has been identified as a promising technology to meet the service requirements of 6 G wireless networks and beyond. The coordination between a massive number of distributed antennas introduces stiff challenges and requires a substantial amount of computing resources that must be put together with careful algorithm-architecture codesign. T

När föremål blir tillräckligt små börjar de bete sig annorlunda från hur de vanligtvis beter sig. Effekter, som att föremål kan vara på flera ställen samtidigt eller vara osynligt sammankopplade över stora avstånd, börjar istället att ske. Inom fysiken brukar dessa effekter beskrivas av kvantmekanik, en teori som har varit väldigt framgångsrik med att förklara vår värld. En annan effekt som dyker In this thesis, an experimental scheme to probe deformations to Heisenberg's uncertainty relation between position and momentum for an object of mass similar to the Planck mass is designed. This will allow experimental bounds to be put on deformation parameters for three different models proposed to explain quantum gravity. The scheme is based on existing ideas to couple a micron-sized harmoni

Eighteen lichen species, one lichenicolous and two allied fungi are reported for the first time for Latvia (Europe). Bryoria smithii, Heterodermia speciosa, Phaeophyscia pusilloides and Ramalina europaea are new records for the Baltic countries. Comments on habitats and substrates of new records are provided.

It is widely believed that Friedrich von Hayek’s first encounter with Gunnar Myrdal involved the latter’s last-minute contribution, as a replacement for Erik Lindahl, to a Sammelband edited by the former in 1933, and that Hayek was lukewarm towards Myrdal and his ideas from the very beginning. Correspondence between the two shows that, in fact Myrdal was among Hayek’s original invitees,and that th

During WWII, the botanist Hylander (1943, 1949) studied the floristic composition of lawns in 249 landscape gardens mostly in Sweden and concluded that they all harboured multiple, but largely the same, non-native species and genotypes that had most likely been introduced together by the sowing of some im- ported grass seed mix. As demonstrated by the later additions by, for example, Ohlsén (1947)During WWII, the botanist Hylander (1943, 1949) studied the floristic composition of lawns in 249 landscape gardens mostly in Sweden and concluded that they all harboured multiple, but largely the same, non-native species and genotypes that had most likely been introduced together by the sowing of some im- ported grass seed mix. As demonstrated by the later additions by, for example, Ohlsén (1947)

A newly found site for the regionally very rare and nationally red­listed Porella arboris-vitae in central Skåne, southern­most Sweden, is reported and described.

Aluminum is a promising carbon-free energy carrier. The combustion of aluminum in steam offers a novel method for the simultaneous production of hydrogen and heat through the reaction: 2Al + 3H2O = Al2O3 + 3H2 + heat. A comprehensive understanding of the combustion mechanism is crucial for predicting and optimizing the performance of aluminum-fueled devices.This thesis develops different lab-scale

Through the tight link between plants and their pollinators, plant species often decline when their pollinators decline and vice versa. These nominal declines are well studied for many plant-pollinator networks. Less well known is the effect that the decline of a plant species has on the behaviour of its pollinators, and how potential changes in pollinator behaviour affect the reproductive success

Kan vi rädda bina (och långhorningarna) i skogen? Det första du tänker på när du hör ”skogslandskap” kanske inte är pollinatörer? Pollinatörer bidrar dock med viktiga funktioner och ekosystemtjänster i skogen. Bin och långhorningar pollinerar växter när de samlar pollen och nektar. Långhorningar bryter även ner ved. Dagens skogsbruk resulterar dock sällan i tillräckliga livsmiljöer för bin och låLand-use change is one of the main drivers of pollinator declines. However, studies on land-use changes in forest landscapes and their effects on pollinators are underrepresented. Canopy openings with flowering resources and old-growth forest structures can provide sufficient habitats for pollinating insects such as bees (Apiformes) and longhorn beetles (Cerambycidae). However, managed forests are

Climate change, migration, social injustice and loss of biodiversity are all examples of wicked problems that society is facing. The complexity and boundary-spanning nature of wicked problems require not only new competencies and skills, but also a different mindset. The responsibility of higher education is to ensure that the young people we educate are equipped with the knowledge, competencies a