Elektrotechnika i Elektronika
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ISSN 1640-7202
Issue Date
2008
Volume
Vol. 27
Number
Nr 2
Description
Journal Volume
Elektrotechnika i Elektronika
Vol. 27 (2008)
Projects
Pages
Articles
Wybrane problemy akwizycji i analizy danych diagnostycznych z badań magnetokardiograficznych
(Wydawnictwa AGH, 2008) Baron-Pałucka, Kamila
Magnetocardiography (MCG) is a non-invasive diagnostic method that bases on magnetic field which is generated during cardiac electric activity. This paper concerns basic rules of measurement conduction, meaning of recorded data sets, as well as data formats that are commonly used for visualization. Moreover, system architecture description was extended to focus not only on technical details but also on physical nature of the process. Basics of post-examination analysis process were presented, as well as the list of the most common diagnostic parameters. Detailed description was given on database content that will be used for further research on computer interpretation techniques of such data sets in decision support systems for heart disease diagnostics.
Automatyczna detekcja elementów asymetrii w dynamicznych mapach CBF perfuzji mózgowej
(Wydawnictwa AGH, 2008) Hachaj, Roman
This paper presents a new algorithm that enables detection of asymmetry in dynamic CBF perfusion maps. In the first stage of the algorithm detection of symmetry axis of image (between left and right hemisphere) is performed. In the second stage the level of asymmetry in cerebral blood flow is measured by detection of regions with different perfusion in both brain hemispheres. The algorithm was tested on a set of 28 different images showing or not cerebral blood flow anomalies. The paper also describes the method for estimating cerebral blood flow with a non diffusing contrast agent based on the Meier-Zierler convolution model as well as CBF, CBV, MTT and TTP perfusion maps.
Wpływ prądu odkształconego na parametry nagrzewania indukcyjnego przy zasilaniu różnymi źródłami częstotliwości
(Wydawnictwa AGH, 2008) Kieroński, Roman
Sources of frequency for induction heating are non-sinusoidal so the current is deformed. Higher harmonics of the current are given for various sources. Their courses traced. The effect of deformed current on the parameters of induction heating has been assessed.
Symulacje komputerowe zwarć doziemnych w sieciach średnich napięć
(Wydawnictwa AGH, 2008) Nowak, Wiesław; Kercel, Bartłomiej
The paper presents computer’s simulations of short circuit in MV electrical power system which has got essential importance to show risk at the moment when it arising. Short circuit in MV electrical power system was analyzing by Electromagnetic Transients Program (EMTP).
Pomiary parametrów silnika pojazdu z wykorzystaniem akcelerometru
(Wydawnictwa AGH, 2008) Nowik, Mateusz
In this paper, techniques of vehicle movement parameters measurments using acceleration sensors has been discussed. Author has described a method of acceleration and vehicle speed aquisition and evaluating characteristics of engines torque and power.