This paper derives a generic model for the multiple-input multiple-output (MIMO) wireless channel. The model incorporates important effects, including i) interdependency of directions-of-arrival and directions-of-departure, ii) large delay and angle dispersion by propagation via far clusters, and iii) rank reduction of the transfer function matrix. We propose a geometry-based model that includes t

Traditionally, occupational injury rates are measured as number of injuries per amount of work. In contrast, we propose that for certain purposes of economic policy, a more relevant measure could be obtained by considering them as production costs and comparing them with output. This was accomplished by replacing “hours worked” in the traditional formulae for estimating accident risk with “value a

The NORDBALL detector array has been used in a gamma-ray spectroscopic study of neutron deficient nuclei close to 100Sn. A beam of 270 MeV 58Ni ions was used to bombard a target of Fe-54. Reaction channel separation was achieved with a 4pi charged particle Si-ball together with a 1pi neutron detector wall. Altogether 29 final nuclei were identified and excited states were observed for the first ti

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

Popular Abstract in Swedish Den övergripande målsättningen med denna avhandling har varit att undersöka molekylära förändringar i icke läkande venösa bensår. Framförallt har fokus lagts på faktorer som underhåller den ständigt pågående inflammationen i venösa sår. Med tanke på att alla venösa sår alltid koloniseras av olika bakterier, har vi undersökt hur bakterier kan påverka sårläkning och inflaChronic skin ulcers are a major health problem and an increasing burden on health care providers. These ulcers have various underlying causes, such as venous or arterial insufficiency, diabetes, or vasculitis. Non-healing venous leg ulcers represent a condition characterized by excessive inflammation and presence of bacteria. The overall aim of this thesis has been to explore the pathogenesis of t

Läsarfrågor. Experterna svarar. Vad var fältsjukan, som grasserade i äldre tiders arméer?

The Anti-lock Braking System is an important component of the steeringsystem in a modern car. In the latestgeneration of brake-by-wire systems, the performance requirementson the ABS are much higher. The controllers have to be able to maintain aspecified tire slip for each wheel during braking. The authors proposea design model and based on that a gain-scheduled controller thatregulates the tire-s

BACKGROUND AND OBJECTIVES: The treatment of acquired aplastic anemia (AA) is based on allogeneic bone marrow transplantation (BMT) and immunosuppressive therapy. The aim of this study was to assess the outcome of children and adults with AA treated in the last decade, and to determine whether results have improved in two sequential time periods,1991-1996 and 1997-2002. DESIGN AND METHODS: Two-thou

Purpose. To define the association between venous volume as measured with air-plethysmography and the duplex ultrasound measured diameter of incompetent perforator of the lower limb. Patients and methods. Thirty-six patients with chronic venous disease were investigated with air-plethysmography and duplex ultrasound. Venous volume and venous filling time was measured. Venous filling index was calc

The pelvic nerve, carrying parasympathetic nerve fibres, distributes bilaterally in the rat urinary bladder. Preganglionic parasympathetic denervation (decentralization) on one side and postganglionic parasympathetic denervation on the other are followed by an initial decrease in acetylcholine forming capacity and in number of acetylcholinesterase positive nerves in the bladder. However, within a

Aim: To estimate, on a national basis in Sweden, the costs versus consequences of combined maternity ward and well-baby clinic eye screening compared to well-baby clinic screening alone. Methods: Two scenarios were created and compared regarding healthcare costs: visual acuity development and quality-adjusted life-years (QALYs). One scenario represented early management ( combined maternity ward a

OBJECTIVE: To investigate how the interval between membrane rupture and delivery affects the risk of neonatal sepsis and whether duration of labor influences the risk. METHODS: A registry study included 113,568 singleton infants born at term after a trial of labor (elective cesarean deliveries excluded). The incidence of a diagnosis of sepsis during the neonatal period was correlated to the interv

Purpose: To assess the value of the combined use of dynamic susceptibility contrast-enhanced perfusion magnetic resonance imaging (MRI) and conventional contrast-enhanced MRI for the follow-up of treatment of glioblastoma multiforme (GBM). Material and Methods: 79 examinations were performed in six surgically and immunogene-treated patients and two surgically treated patients. Ratios of the relati

The biomass and bacterial ingestion rates of mixotrophic phytoflagellates were examined on diurnal and seasonal scales in oligotrophic Lake Skarlen (S. Sweden). Ingestion rates were measured using fluorescent microspheres in situ on three depths every 6(th) hour during 24 hours in summer in order to quantify diurnal variations and once at midday during autumn, winter and spring. Mixotrophic phytof