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Causal interaction analysis of cardiovascular signals
Tiurina, Mariia ; Kolářová, Jana (referee) ; Svačinová, Jana (advisor)
Application of the non-invasive methods to detection of the baroreflex sensitivity is a correct way to evaluate the functions of cardiovascular system. This master’s thesis describes the theoretical informations about the problem of baroreflex sensitivity from anatomical, patalogical and clinical views. Theoretical knowledges are foundation for mathematical description of some methods to detection of baroreflx sensitivity in time, frequency and information dimensions. In the practical part of the master’s theses are presented two methods of BRS detection – sequence method based on finding the specific sequences of time series signals and method of application bivariante autoregressive model. Both of methods are implemented in MATLAB. The results of testing data on real data are discussed.
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Methods for the evaluation of heart rate and arterial blood pressure variability
Sedláčková, Gabriela ; Halámek, Josef (referee) ; Leinveber, Pavel (advisor)
The bachelor thesis deals with methods for description of heart rate variability and arterial blood pressure. An important mechanism for maintaining homoeostasis in the body is so called baroreflex feedback loop, which allows for a short-term regulation of blood pressure. The thesis contains description of methods which are currently used for baroreflex sensitivity evaluation. Analysis in time domain as well as in frequency domain was done using programs in Matlab environment. At the end of the thesis the influence of ventricular extrasystoles on output parameter is evaluated.
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Inverse problems in computational heat transfer with phase change
Kamarýt, Petr ; Mauder, Tomáš (referee) ; Klimeš, Lubomír (advisor)
This diploma thesis deals with inverse problems in heat transfer with phase change. The first chapter focuses on heat transfer mechanisms including phase change. Second chapter deals with computational solution of heat transfer problems. In the third chapter the inverse problem for heat flux estimation is formulated. Fourth chapter is description of methods, implemented by the author, for computational solution of both direct and inverse heat transfer problems. Solution of inverse problem are obtained by the sequential method and artificial neural networks. Two heat flux types were selected: continuous, piecewise linear and discontinuous, piecewise constant. Obtained result for both cases are comparable. In case of discontinuous heat flux, results are worse than in continuous case.
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Inverse problems in computational heat transfer with phase change
Kamarýt, Petr ; Mauder, Tomáš (referee) ; Klimeš, Lubomír (advisor)
This diploma thesis deals with inverse problems in heat transfer with phase change. The first chapter focuses on heat transfer mechanisms including phase change. Second chapter deals with computational solution of heat transfer problems. In the third chapter the inverse problem for heat flux estimation is formulated. Fourth chapter is description of methods, implemented by the author, for computational solution of both direct and inverse heat transfer problems. Solution of inverse problem are obtained by the sequential method and artificial neural networks. Two heat flux types were selected: continuous, piecewise linear and discontinuous, piecewise constant. Obtained result for both cases are comparable. In case of discontinuous heat flux, results are worse than in continuous case.
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Causal interaction analysis of cardiovascular signals
Tiurina, Mariia ; Kolářová, Jana (referee) ; Svačinová, Jana (advisor)
Application of the non-invasive methods to detection of the baroreflex sensitivity is a correct way to evaluate the functions of cardiovascular system. This master’s thesis describes the theoretical informations about the problem of baroreflex sensitivity from anatomical, patalogical and clinical views. Theoretical knowledges are foundation for mathematical description of some methods to detection of baroreflx sensitivity in time, frequency and information dimensions. In the practical part of the master’s theses are presented two methods of BRS detection – sequence method based on finding the specific sequences of time series signals and method of application bivariante autoregressive model. Both of methods are implemented in MATLAB. The results of testing data on real data are discussed.
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|
|
Methods for the evaluation of heart rate and arterial blood pressure variability
Sedláčková, Gabriela ; Halámek, Josef (referee) ; Leinveber, Pavel (advisor)
The bachelor thesis deals with methods for description of heart rate variability and arterial blood pressure. An important mechanism for maintaining homoeostasis in the body is so called baroreflex feedback loop, which allows for a short-term regulation of blood pressure. The thesis contains description of methods which are currently used for baroreflex sensitivity evaluation. Analysis in time domain as well as in frequency domain was done using programs in Matlab environment. At the end of the thesis the influence of ventricular extrasystoles on output parameter is evaluated.
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