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Probabilistic discrete model of concrete fracturing
Kaděrová, Jana ; Lehký, David (referee) ; Konečný,, Petr (referee) ; Eliáš, Jan (advisor)
The thesis presents results of a numerical study on the performance of 3D discrete meso–scale lattice–particle model of concrete. The existing model was extended by introducing the spatial variability of chosen material parameter in form of random field. An experimental data from bending tests on notched and unnotched beams was exploited for the identification of model parameters as well as for the subsequent validation of its performance. With the basic and the extended randomized version of the model, numerical simulations were calculated so that the influence of the rate of fluctuation of the random field (governed by the correlation length) could be observed. The final part of the thesis describes the region in the beam active during the test in which the most of the fracture energy is released in terms of its size and shape. This region defines the strength of the whole member and as shown in the thesis, it does not have a constant size but it is influenced by the geometrical setup and the correlation length of the random field.
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SME Access to Finance and Monetary Policy of the ECB
Brázdová, Martina ; Horváth, Roman (advisor) ; Dědek, Oldřich (referee)
The objective of this thesis is to provide new insights into determinants of firm access to finance, and the role of the European Central Bank's (ECB) monetary policy. Not only do we describe and analyze the determinants of access to finance, but we focus on the theory of financial intermediation, as well. The key part analyses European Commission (EC)/ECB survey data for 16 euro area economies from 11 survey waves in the period from 2009 to 2014. We build our model using traditional firm-level variables such as firm size and age as well as a novel measure of the ECB's monetary policy stance - the shadow rate. We hypothesize that smaller and younger firms with decreased profitability over the past 6 months and increased leverage over the same period are more likely to report problems with access to finance. Our results are intuitively consistent with theoretical expectations and also show that the looser the monetary policy of the ECB is, the lower the composite financing gap indicator. Interestingly, we do not confirm the existence of risk taking channel of the monetary policy. Overall, we make use of the most recent survey data, extend the dataset, and use modified methodology for our estimation.
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Probabilistic discrete model of concrete fracturing
Kaděrová, Jana ; Lehký, David (referee) ; Konečný,, Petr (referee) ; Eliáš, Jan (advisor)
The thesis presents results of a numerical study on the performance of 3D discrete meso–scale lattice–particle model of concrete. The existing model was extended by introducing the spatial variability of chosen material parameter in form of random field. An experimental data from bending tests on notched and unnotched beams was exploited for the identification of model parameters as well as for the subsequent validation of its performance. With the basic and the extended randomized version of the model, numerical simulations were calculated so that the influence of the rate of fluctuation of the random field (governed by the correlation length) could be observed. The final part of the thesis describes the region in the beam active during the test in which the most of the fracture energy is released in terms of its size and shape. This region defines the strength of the whole member and as shown in the thesis, it does not have a constant size but it is influenced by the geometrical setup and the correlation length of the random field.
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SME Access to Finance and Monetary Policy of the ECB
Brázdová, Martina ; Horváth, Roman (advisor) ; Dědek, Oldřich (referee)
The objective of this thesis is to provide new insights into determinants of firm access to finance, and the role of the European Central Bank's (ECB) monetary policy. Not only do we describe and analyze the determinants of access to finance, but we focus on the theory of financial intermediation, as well. The key part analyses European Commission (EC)/ECB survey data for 16 euro area economies from 11 survey waves in the period from 2009 to 2014. We build our model using traditional firm-level variables such as firm size and age as well as a novel measure of the ECB's monetary policy stance - the shadow rate. We hypothesize that smaller and younger firms with decreased profitability over the past 6 months and increased leverage over the same period are more likely to report problems with access to finance. Our results are intuitively consistent with theoretical expectations and also show that the looser the monetary policy of the ECB is, the lower the composite financing gap indicator. Interestingly, we do not confirm the existence of risk taking channel of the monetary policy. Overall, we make use of the most recent survey data, extend the dataset, and use modified methodology for our estimation.
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