Search results

Filter

Filetype

Your search for "*" yielded 528631 hits

System Identification Applied to Spatial and Temporal Propagation of Atrial Activity During Atrial Fibrillation

The purpose of the paper is to apply system identification methods to study spatial and temporal propagation of atrial activation along coronary sinus (situated in the posterior left part of the heart, in the groove between left atrium and left ventricle) during paroxysmal atrial fibrillation using data recorded from 7 different patients. Furthermore, interatrial mechanisms of impulse conduction c

A Frame Work for Process State Transitions: Grade Changes

In modern chemical process industry, process state transitions, orgrade changes, are common operations. For example, for a papermachine, a common operation is to change the surface weight of theproduced paper. In this case it is of importance that the transitionto the new grade is done fast, but without a breakdown asa result. This paper addresses this problem by combining optimizationtechniques a

Full electrification of Lund city bus traffic - A simulation study

Flexibla och ekonomiska system för eldrift av vägfordon är ett område med aktiv utveckling och forskning. Denna rapport tillämpar sådana system för drift av alla stadsbussar i Lund. En programvara för simulering och ekonomisk optimering av sådana system har utvecklats och några systemkonstruktioner presenteras. Ett försök till realistiska kostnader och resultat uppskattningar av de viktigaste kompFlexible and economic systems for full electric operation of road vehicles are an area of intense research and development. This report applies such systems to the operation of all city buses in Lund. Software for simulation and economic optimization of such systems is developed and a few system designs are presented. An attempt to a realistic cost and performance estimate of the main components i

Upper Extremity Disorders - Epidemiology and Measures of Disability

The aim of this thesis was to investigate the prevalence and characteristics of long-lasting upper extremity symptoms in a general population and to study some methodological aspects of outcome assessment and reporting, including validation of a Swedish version of an upper extremity region-specific outcome instrument that potentially could be useful for assessing upper extremity disorders. A gener

Evaluation of the Communications Performance Achievable on Base Station to Handheld-Terminal Radio Links with Several Different Practical Receive Antenna Arrays

In this paper, the information extracted from Single-Input Multiple-Output sounding measurements is used to study the effect of several aspects of the receive antenna arrays on system performance. The extracted multipath parameters are used to synthesize the MIMO channel matrices of a hypothesized communication system having a fixed microcellular base-station and a handheld terminal moving through

Optical studies of single quantum dots in microdisks

Microdisks containing single, selected self-assembled quantum dots were fabricated and their optical properties were studied. Using two electron beam lithography exposures, the dots were positioned at the microdisks edges where the optical field reaches its maximum with sub-micron precision. High Q-values, in excess of 13000 were achieved and the coupling of the emission from single quantum dots t

Gender and Buddhism in the Wake of the Tsunami

In December 2004, the Indian Ocean Tsunami hit the shores of 13 countries and more than 280,000 people lost their lives. In Thailand, about 10,000 people died or are missing and approximately 8,500 people were injured. The exact number of how many died will never be known. This chapter deals, from a gender perspective, with the significance of Buddhism in the post-Tsunami recovery process in small

CFD modelling of drop formation in a liquid-liquid system

The formation of an oil drop from a single capillary in a continuous phase flowing perpendicular to the capillary opening has been studied numerically. The shear stress at the interface of the forming drop, the angular velocity inside the drop and the pressure field around the drop have been determined in a cross section of the drop formation area. The results show a maximum pressure in the contin