We consider the problem of constructing linear precoders for quasi-stationary multiple-input multiple-output channels. We assume maximum-likelihood detection and the objective of the precoding is to maximize the minimum Euclidean distance of the signaling. Since the channel remains constant for some time, the precoding can be performed spatially as well as in time. As will be shown, the precoder d

Popular Abstract in Swedish Ämnet hållfasthetslära behandlar metoder och principer för att kunna bestämma deformationer och spänningar i en fast kropp som utsätts för belastning. Avhandlingen behandlar skademekanik, vilket rör hur skador (porer, håligheter, mikrosprickor och dylikt) påverkar materialets egenskaper och hur skadorna påverkas av belastning. Vidare förutsätter skademekaniken att materPlasticity induced damage evolution is considered using a thermodynamical approach. Different postulates on how to include the effects of damage in the constitutive equations have been studied. The results reveal that a mapping, similar to that of the stress, of both the kinematic and isotropic hardening variables is to be preferred. The undesired property that, irrespectively of the postulate emp

A wavelet generator producing 100 ps short pulses at 60 GHz is presented. The wavelet generator consists of a gated tunnel diode (GTD) integrated in parallel with an inductor. This forms a negative differential conductance (NDC) oscillator with the ability to switch the NDC property on and off, which makes it possible to generate short pulses. In the experiments described, the wavelet generator dr

Political participation research has consistently shown that age and education among other factors, to a large extent determine who the activists are. The rise of social media services such as Facebook has however prompted hopes that new and more flexible forms of participation might lead to reduced inequality in political participation. This paper uses unique data on the political uses of social

On Swedish 1970s porn film as a transnationally successful example of European Cinema.

The reassignment technique is used to increase the localization for signals that have closely located time-frequency components. For Gaussian components the reassignment based on an optimal (matched) window spectrogram will result in a single point where all mass is located. For non-optimal windows, the reassignment procedure can be optimally rescaled to fulfill the single point mass location. Non

This licentiate thesis consists of two separate studies on educational attainment and returns to education. The first paper, “Ethnic Segregation and Educational Attainment in Sweden”, studies whether youths brought up in ethnically segregated neighbourhoods differ in educational attainment from youths brought up in more affluent neighbourhoods, after controlling for family characteristics. The eth

Sediment pigments as an indicator of water column and benthic processes have become widely used during the last decades. However, the effect of different storage and handling conditions on the accuracy of sediment pigment analyses has not been adequately evaluated. This can potentially make comparisons between studies difficult and, at worst, call into question the validity of some studies. Even t

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J.S.Sneedorff joined patriotism and political theory in his treaty from 1757: "OnCivil Government". He was professor 'Juris publici et Politices' at the Academy in Sorø from 1751-1761. His successor at the Academy, Andreas Schytte, lectured during the years 1761-77 and published his political theory in eight volumes 1773-77.Together they represent a theory of monarchism and absolutism in Denmark-N

In the turning operation the relative dynamic motion between cutting tool and workpiece, or vibration, is a frequent problem, which affects the result of the machining, and in particular, the surface finish. Tool life is also influenced by vibration. Noise in the working environment frequently occurs as a result of dynamic motion between the cutting tool and the workpiece. The research study inclu

I denna artikel belyses några kommunala ambitioner att styra med mål. En av frågorna vi ställer oss är varför vissa organisationer i den kommunala och landstingskommunala sektorn förefaller styras mer effektivt med mål än andra. Vad är det som gör att vissa offentliga organisationer vinner den ena utmärkelsen efter den andra avseende till exempel servicekvalité och styrning. Med vilken substans pr