System dynamics is an approach to the modelling and simulation of nonphysical systems. In the past, typical application domains were social, biological, and economical systems. Recently a new application domain has emerged: software development. The report summarises the major results of a study performed to review worldwide activities in the field of system dynamics modelling and simulation appli

The main objective of the paper is to briefly describe and exemplify some of the work that has been carried out within the STAMP project at IEA at Lund Institute of Technology within the field of mathematical modeling of wastewater treatment (WWT) processes. Three main areas have been identified - reduced-order models of the activated sludge process, modelling of biofilm processes including some e

Om författaren Axel Wallengren (1865–91)

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Neither the natural history of AF nor its response to therapy are sufficiently predictable by clinical and echocardiographic parameters. Atrial fibrillatory frequency (or rate) can reliably be assessed from the surface electrocardiogram (ECG) using digital signal processing (filtering, subtraction of averaged

The notion ‘textual history’ (Sw. texthistoria) has often been used in a narrow philological sense denoting the history of version of a single work. Today it is however, at least in the Nordic languages, used in other connections as well, not least within discourse analysis. The article shows that textual history theoretically could be understood as (1) the history of text(s) as language in use, w

This study describes how the serum protein histidine-rich glycoprotein (HRG) affects the complement system. We show that HRG binds strongly to several complement proteins: C1q, factor H and C4b-binding protein and that it is found complexed with these proteins in human sera and synovial fluids of rheumatoid arthritis patients. HRG also binds C8 and to a lesser extent mannose-binding lectin, C4 and

ABSTRACT The integrity of the urogenital tract against potentially invasive pathogens is important for the health of the individual, fertilization, and continuance of species. Antibiotic peptides with broad antimicrobial activity, among them chemokines, are part of the innate immune system. We investigated the presence of the antibacterial interferon (IFN)-dependent CXC chemokines, MIG/CXCL9, IP-1

"Jag tror att Gud ständigt talar genom sitt ord, men jag ser inte varför vi som bekännande kristna därför skulle vara rädda för att ställa vissa frågor till texten. Det skriver David Willgren i en replik till Göran Lennartsson."

Radio-frequency identification (RFID) with a received signal strength indicator (RSSI) is a low-cost and low-complexity approach for item-level indoor localization. Although RSSI-based algorithms suffer from multipath effect and other environmental factors, reference tags and RSSI changes can be utilized to further improve the localization accuracy. However, the current algorithms lack deep analys

Objective: The etiology of abdominal aortic aneurysm (AAA) includes atherosclerotic, inflammatory, immunological and coagulatory mechanisms. The aim of this study was to evaluate associations between markers for some of these mechanisms and AAA-size, in order to identify markers which might later be evaluated in relation to aneurysm growth. Material and methods: Prospectively 360 AAA-patients and