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Interarrival Distribution of a Long-Range Dependent Workload Process

We derive the interarrival distribution of a workload input process which is a variation of the infinite source Poisson process for packet traffic. It accounts for long-range dependence and self-similarity exhibited by real traces in the Internet. The packet generation process is compound Poisson over each session which has a heavy tailed distribution. Considering the dependence induced by the wor

Modelling the dynamics of wastewater treatment processes / Modellering av dynamiska förlopp i vattenreningsprocesser

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

Frequency analysis of atrial fibrillation from surface electrocardiograms

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

Texthistoria – vad är det?

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

Interactions of histidine-rich glycoprotein with immunoglobulins and proteins of the complement system.

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