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We study deterministic algorithms for gossiping problem in ad hoc radio networks. The efficiency of communication algorithms in radio networks is very often expressed in terms of: maximum eccentricity D, maximum in-degree Δ, and size (number of nodes) n of underlying graph of connections. The maximum eccentricity D of a network is the maximum of the lengths of shortest directed paths fro
Abstract: Parkinson’s disease (PD) is a common neurodegenerative disorder. There is no proven protection, but many treatments can partially improve symptoms. The disease is caused by monogenetic mechanisms in very few cases, but for the majority of patients the etiology is unknown. Epidemiological studies have identified a potential role for inflammation. The thesis investigates inflammation and i
Outdoor ranges are commonly used for accurate RCS measurements of full scale vehicles with or without camouflage. Furthermore, ISAR processing is often used to obtain high quality imagery of the objects. However, these images do not show the vehicles in the environment where they are supposed to operate. This paper describes a ground based SAR system that is used to make accurate measurements on v
Popular Abstract in Swedish Kultursemiotiken studerar möten mellan kulturer. Begreppen Kultur, Extra-kultur och Icke-kultur utvecklades av Tartuskolan under 1970-talet, och användes i deras studier av den ryska kulturen och dess relation till Västeuropa. Särskild vikt lades vid Peter den Stores försök att göra Ryssland mer likt Väst. Målet med denna avhandling i kultursemiotik är att vidareutvecklCultural semiotics studies encounters between cultures. Notions such as Culture, Extra-culture and Non-culture were developed in the 1970s by the Tartu school and were used in their studies of Russian culture and its relation to Western Europe, with special focus on Peter the Great's attempt to Westernize Russia in the eighteenth century. The aim of this dissertation in cultural semiotics is to fu
Transnational stardom, in the sense that particular star actors constitute a genuine draw for audiences in other European countries than that of the film’s origin, appears an increasingly rare thing within the continent’s cinema. In short, a transnational star system is wanting. Had it existed, more attractive films would most undoubtedly be a reality. Furthermore, with such a system in place film
Using two epochs of observations with HST/WFPC2 we obtain the stellar proper motions for all stars in the field. The proper motion are used to separate the bulge from the cluster stars. The stellar sequences in the resulting colour-magnitude diagram (CMD) are better defined than in any previously published CMD. Using a-enhanced stellar isochrones we find NGC 6528 to have a probable age of 11 +/- 2
The Nordic countries have a long tradition of large-scale biobanking and comprehensive, population-based health data registries linkable on unique personal identifiers, enabling follow-up studies spanning many decades. Joint Nordic biobank-based studies provide unique opportunities for longitudinal molecular epidemiological research. The purpose of the present paper is to describe the possibilitie
Car developers use digital human modeling tools to analyze and visualize car interiors in relation to human characteristics before the vehicles are actually constructed. Developers, reviewers and users of human simulation tools often claim that such tools can reduce development time and costs. In car industry companies today, human simulation tools are used by a single or a few experts in an infor
A semiempirical method to characterize the pencil-beam dose kernel is presented. Results from measurements are described by mathematical models of the applicable physical processes. The measurements were made with 6 and 25 MV x-ray beams from a linear accelerator. Broad-beam notations were used consistently, and the pencil-beam quantities were obtained by differentiation. The results were compared
Male sex development and reproductive function is regulated by androgens acting via the androgen receptor (AR). The AR harbours two polymorphic repeats of CAG and GGN triplets, encoding glutamines and glycines, respectively. Both polymorphisms affect the AR transactivation ability, although the function of the GGN repeat was virtually unknown at the start of this project. Thus, the main purpose wi
The insulin-like growth factor (IGF) system demonstrates numerous actions during neoplastic growth and is therefore an interesting target with potential clinical implications. While numerous studies have established important roles of the IGF system in regulating cellular growth and survival of several tumor forms, very limited reports exist regarding its role in renal cell carcinoma (RCC). The ai
This dissertation deals with analog techniques at both the architecture and circuit design levels for designing power efficient linear radio-frequency (RF) transmitters. The use of nonlinear analog integrated circuits to implement certain critical signal processing functions for the multiplicative feedback and LINC techniques is investigated with the aim of improving the system performance in term
The aim of the present study is to examine the validity of using silicon semiconductor detectors in degraded electron beams with a broad energy spectrum and a wide angular distribution. A comparison is made with diamond detector measurements, which is the dosimeter considered to give the best results provided that dose rate effects are corrected for. Two-dimensional relative absorbed dose distribu
BACKGROUND AND AIMS: Monochromatic pulsating light may have effects on wound healing. In an earlier study of grade II ulcers, there was a tendency toward better healing in the phototherapy group (p=0.06). The present study on patients with grade II ulcers was performed to verify these findings. Data from this study were pooled with data from the earlier study. METHODS: Ninety-four patients were of
Objective. To study the kinetics of lipid micro-emboli during cardiac surgery. Design. Eleven pigs were studied. Seven of these were put on extracorporeal circulation. A shed blood phantom consisted of blood, saline and radioactive triolein was added to the circuit. Both venous and arterial blood samples were taken at short intervals. Four animals were used to study renal kinetics without extracor
BACKGROUND: Cyclin A1 is a cell cycle regulator that has been implicated in the progression of prostate cancer. Its role in invasion and metastasis of this disease has not been characterized. METHODS: Immunohistochemistry and cDNA microarray analyses were used to assess protein and mRNA expression of cyclin A1 and proteins with roles in metastasis, including vascular endothelial growth factor (VEG
An increased prevalence of cardiovascular (CV) risk factors and cardiac abnormalities has been shown among adult GH deficient ALL survivors subjected to cranial irradiation. The ALL treatment includes many known risk factors for low bone mineral density (BMD), but little is known about pituitary insufficiencies, except for GH deficiency. In study I we evaluated the impact of 2 years GH therapy on
