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Popular Abstract in Swedish Trådlösa system som använder elektromagnetisk strålning, även kallat radio kort och gott, har fått ett enormt genomslag i våra liv. Radio används överallt: telefoni, GPS, mobilt bredband och TV är tillämpningar som vi som privatpersoner lätt kommer i kontakt med men även till radar, magnetisk resonanstomografi och andra avbildande system. Speciellt datakommunikation i mThis thesis investigates the opportunity of wireless multi-gigabit per second communication at the millimeter-wave (mmW) frequencies around 60 GHz by using impulse radio and nanoelectronics. Today most wireless communication take place in the microwave region, where several different systems and applications are crowding the narrow-band channels. Complicated schemes are applied in order to avoid i

This paper presents a high throughput, low latency soft-output signal detector for a 4×4 64-QAM MIMO system. To achieve high data-level parallelism and accurate soft information, the detector adopts a node perturbation technique to generate a list of candidate vectors around Zero Forcing, ZF, result. Additionally a fast and hardware friendly node enumeration scheme is developed to significantly re

The purpose of our paper is to describe venture capitalists’ responses to psychological contract violations in their relationship with entrepreneurs. In addition, we seek to establish a link between the characteristics of a psychological contract violation and the venture capitalist’s behavior. We are concerned with three forms of psychological contract violations: (i) a disagreement over the goal

Popular Abstract in Swedish Sotpartiklar i atmosfären är en del av klimatfrågan som är i särskilt stort behov av utredning. Dessutom har det visat sig, att samma partiklar orsakar mycket stora hälsoproblem; globalt, på Europeisk nivå, och till och med i förhållandevis förskonade länder som Sverige. Vi vet nu nästintill helt säkert att mänsklig påverkan leder oss in i ett varmare klimat. Vi behöveAerosol particles contribute significantly to the global burden of disease, and remain the main source of uncertainty in assessments of human-induced climate change. The microphysical characterization of particles is necessary to understand the roles they play in the detrimental effects of air pollution on human health, and in the energy budget of our planet. Soot particles are especially relevant

Rising fuel prices and increasing environmental awareness emphasizes the importance of the transportation aspect in logistics. This calls for new improved inventory control methods that consider the effects of shipment strategies in a more realistic manner. This thesis, consisting of an introduction and three scientific papers, studies how shipment decisions can be included in the inventory contro

Partitioning large high-speed globally synchronous ASICs into locally clocked blocks reduces clock skew problems and if handled correctly it also reduces the power consumption. However, to achieve these positive effects, the blocks need on-chip clock generators having properties such as small area and low power consumption. Therefore, a low power, high frequency, small area digitally controlled on

Extreme Programming (XP) is becoming popular as a software development method and there is quite a lot of literature describing its philosophy and practices. However, in all of this literature Software Configuration Management (SCM) is almost never mentioned explicitly, leaving XP practitioners with the impression that SCM is not needed and SCM people with the impression that XP is not sound from

This thesis covers the impact of the financial crisis of 2007-2009, the non-linearity in the impact of bankruptcy risk on leverage and the effect of pessimism and doubt on the equity premium. It consists of four self-contained essays. The first essay develops a framework to investigate the impact of the financial crisis starting in 2007 and employs an extended GARCH model to test for spillover and

My dissertation studies the frequently mentioned but never fully explored affinities between the writings of Juan Carlos Onetti and Juan José Saer. From the very beginning of their writing careers, both authors relate writing and narrating to an elusive search for meaning—in life and stories. Consequently, the scene of storytelling is of the utmost importance; how, when, by and to whom, and indeed