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On the Directional Reciprocity of Uplink and Downlink Channels in Frequency Division Duplex Systems

The possibility of using the channel reciprocity between the uplink and downlink channels in Frequency Division Duplex (FDD) systems to improve the efficiency has been deeply investigated. Previous studies have come to different conclusions for the characterization of the dissimilarity in uplink and downlink channel properties. This paper analyzes the mismatch in directional properties of the upli

Anxiety in Individuals with ASD: Prevalence, Phenomenology, Etiology, Assessment, and Interventions

Individuals with autism spectrum disorder (ASD) experience high levels of anxiety symptomatology with an estimated prevalence rate of anxiety disorders as high as 40 %. It is likely that anxiety is prominent in individuals with ASD throughout the life-span and that factors such as age, IQ, and ASD symptoms may influence the rates, symptoms, or anxiety subtypes. The high comorbidity rate of anxiety

Critical obstetric situations - obstetricians' ethical decision-making and parents' handling of threat of preterm birth

Ethical issues arise in obstetric situations and demand the obstetrician’s moral consideration for those who are involved in the actual case (Paper I). A balance between the health of the foetus and the autonomy of the woman is necessary to do the best for both the mother and her foetus/infant. Preterm birth is one of the main causes of mortality and morbidity for the child, in short and long term

Wave statistics in non-linear random sea

The sea elevation at a fixed point is modeled as a sum of Gaussian process plus a quadratic random correction term. It is shown that the process can also be written as a quadratic form of a vector valued Gaussian process with arbitrary mean. The saddlepoint method is used to approximate the intensity μ(u), say, the sea level crosses the level u. The accuracy of the proposed method is studied. In e

Places of Dying and Rituals of Mourning

The purpose of this paper is to explore in what way the place becomes important for those who are affected by disasters or sudden death. According to human geography people have affective bonds to the concrete physical places where they are living and moving in their everyday live. Places are also constructed as meeting places where people create social relations. In the discotheque fire in Gothen

Multipath propagation simulator for V2X Communication Tests on Cars

Test and evaluation of wireless communication performance with cars can be done in many ways. One approach, for both vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) tests, is to use a multipath propagation simulator to achieve realistic signal environments for the different communication systems under test. Multipath propagation simulators have previously been shown to be useful for t

De ovanligas betydelse

This study is about the relationship between normality and deviance, illustrated by the relation between ordinary people and deviants in the form of local characters.

Sealants between elements of aerated concrete

Because of the low tensile strength of aerated concrete, the sealing of joints between such elements causes special problems. In this paper some main characteristics of sealants for use in aerated concrete joints are discussed. These properties are elongation resistance, elasticity, and ageing. The elongation resistance was examined at different rates and different temperatures. The elasticity wa

Historia vid skiljevägen : Historiekulturella sonderingar när och fjärran

I Historia vid skiljevägen resonerar ett tjugotal författare på historiekulturella teman. Boken är en festskrift till Klas-Göran Karlsson och är uppdelad i fyra teman: Klas-Göran som historiker - historier om Klas-Göran, Historia, samhälle och vetenskap i förändring, Historia och minnespolitik samt Historiekulturella manifestationer - undervisning och medier.