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Foreign direct investments and their impact on the Czech Republic
Klugová, Kateřina ; Burian, Stanislav (advisor) ; Milan Robin, Milan Robin (referee)
The theoretical part of the dissertation is dedicated to the balance of the payments as well as to the theory of the direct foreign investments with the linkage to new methodology of the balance of the payments. The determinants of the direct foreign investments are consequently introduced in the economic theory. The attention is to the higher extent dedicated to the industrial and territorial break-down. The incentive system and the Agency for the support of incoming direct foreign investments (CzechInvest) are described and introduced in the connection with the system functioning in Czech Republic. The incoming direct foreign investments in the period from 2004 to 2014 are analyzed in the second part of the dissertation. The time series were set up on the basis of the annual reports and the databases of Czech National Bank; the evolution phases of direct foreign payments is consequently analyzed with the regard to the respective industries and territories. The development of the direct foreign investments and their impacts on Czech Republic is assessed in the conclusion of the dissertation. It is concluded that the development of the incoming direct foreign investments is in a close correlation with the economic situation in Czech Republic and neighboring countries. The dissertation confirms that the economic and also non-economic factors of each country are key determinants for the final level of the incoming direct foreign investments.
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Sparse robust portfolio optimization via NLP regularizations
Branda, Martin ; Červinka, Michal ; Schwartz, A.
We deal with investment problems where we minimize a risk measure\nunder a condition on the sparsity of the portfolio. Various risk measures\nare considered including Value-at-Risk and Conditional Value-at-Risk\nunder normal distribution of returns and their robust counterparts are\nderived under moment conditions, all leading to nonconvex objective\nfunctions. We propose four solution approaches: a mixed-integer formulation,\na relaxation of an alternative mixed-integer reformulation and\ntwo NLP regularizations. In a numerical study, we compare their computational\nperformance on a large number of simulated instances taken\nfrom the literature.
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Some results of simulations of flows with internal permeable walls
Louda, Petr
The work deals with the numerical modelling of compressible flow in a domain containing permeable walls in its interior, i.e. submerged in the fluid. The aim is to exclude direct simulation and find a model approximating the flow through a permeable plate driven by the static pressure difference between the sides of the wall. The numerical experiments so far enable to understand better forming of parasitic wave structures in the measuring section of the wind tunnel. The model of permeable wall needs further verification.
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Condition monitoring of thrust ball bearings using continuous AE
Chlada, Milan ; Nohal, L. ; Převorovský, Zdeněk
Fast and reliable analysis of continuous AE recorded during endurance tests on flat washer parts reliably simulating critical rolling contact fatigue of the full-scale bearings is presented in the paper. Two channels of continuous AE signal were partially recorded within whole specimen lifetime tests and compared with other experimental parameters as vibration rate or temperature. As an alternative to classical spectrogram analysis, we proposed to use histograms of time intervals between threshold amplitudes crossings in various frequency bands represented by the wavelet decomposition. Results obtained on long-time records are discussed, illustrating advantages of proposed AE signal processing, which can be done in real time to observe the processes before the onset of the final damage on the surface of the specimen more precisely than vibrodiagnostics.
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Potential of the sentinel-2 red edge spectral bands for estimation of eco-physiological plant parameters
Malenovský, Zbyněk ; Homolová, Lucie ; Janoutová, Růžena ; Landier, L. ; Gastelluetchegorry, J-P. ; Bertholt, B. ; Huck, A.
In this study we investigated importance of the spaceborne instrument Sentinel-2 red edge spectral bands and reconstructed red edge position (REP) for retrieval of the three eco-physiological plant parameters, leaf and canopy chlorophyll content and leaf area index (LAI), in case of maize agricultural fields and beech and spruce forest stands. Sentinel-2 spectral bands and REP of the investigated vegetation canopies were simulated in the Discrete Anisotropic Radiative Transfer (DART) model. Their potential for estimation of the plant parameters was assessed through training support vector regressions (SVR) and examining their P-vector matrices indicatingsignificance of each input. The trained SVR were then applied on Sentinel-2 simulated images and the acquired\nestimates were cross-compared with results from high spatial resolution airborne retrievals. Results showed that contribution of REP was significant for canopy chlorophyll content, but less significant for leaf chlorophyll content and insignificant for leaf area index estimations. However, the red edge spectral bands contributed strongly to the retrievals of all parameters, especially canopy and leaf chlorophyll content. Application of SVR on Sentinel-2 simulated images demonstrated, in general, an overestimation of leaf chlorophyll content and an underestimation of LAI when compared to the reciprocal airborne estimates. In the follow-up investigation, we will apply the trained SVR algorithms on real Sentinel-2 multispectral images acquired during vegetation seasons 2015 and 2016.
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Distribution of the turbulent kinetic dissipation rate in an agitated vessel
Kysela, Bohuš ; Sulc, R. ; Konfršt, Jiří ; Chára, Zdeněk ; Fořt, I. ; Ditl, P.
The design of the agitated tanks depends on the proposed operating conditions and processes\nfor that they are used for. Namely dissipation rate of the turbulent kinetic energy is important\nparameter for the scale-up modelling. The dissipation rate is commonly determined as integral\nvalue based on power input of the impeller, but without information about distribution inside\nthe agitated volume. The cumulative distributions of the dissipation rate within an agitated\nvessel are estimated by evaluations of the CFD (Computational Fluid Dynamics) results,\nwhere the data was obtained from RANS (Reynolds Averaged Navier-Stokes equations) and\nLES (Large Eddy Simulations). The simulations were performed for an agitated vessel\nequipped with four baffles and stirred by a standard Rushton turbine (tank diameter 0.3 m,\nimpeller diameter 0.1 m, off-bottom clearance half of tank diameter, impeller speed 200 rpm).\nThe values of the dissipation rate from the LES calculations were approximated by computing\nthe SGS (Sub Grid Scale) dissipation rate.
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Investment Options Population in the Czech Republic
Dvořák, Milan ; Bartošová, Jitka (advisor) ; Váchová, Lucie (referee)
The main goal of this work is to simplify the plethora of information on the topic of investment and formulate them into a form, that is understandable for the normal investor. Thus, the investor gets the theoretical framework to find appropriate product, or a way to to invest in capital markets. Partial aim is to highlight the pitfalls associated with investing, define essential factors necessary for the proper choice of each investment and give specifics of individual investment instruments. Last but not least, simulations of selected investment instruments, assessing their development along with identification key factors having influence on the result of investment.
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The impact on the european automotive industry by the free trade agreement between the European Union and Japan
Knittelová, Tereza ; Pikhart, Zdeněk (advisor) ; Pekárek, Štěpán (referee)
The European Union is negotiating a free trade agreement with Japan since 2013. The subject of this diploma theses is to analyze how this agreement can influence either automotive industry. In order to understand the agreements possible influence, classical, neoclassical, contemporary and alternative theories of international trade and international trade policies are being examined. It is then analyzed what the agreement aims to accomplish in context of the Japanese macroeconomic, the history of trade relations and development, the current trade situation, production and demand on both markets. Finally, the agreement is compared to an existing agreement with Republic of Korea which is in a similar scenario. The result is that an increase of luxury cars being imported by each side is the most likely outcome.
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Processing of MP3 files for DSP
Římský, Adam ; Sysel, Petr (referee) ; Herman, Ivo (advisor)
This thesys is concerned with create of compressed .MP3 files and their conversion back into PCM format. I describe individual parts of these operations for their maximal understanding by reader. Next part is generally about properties of DSP, their architecture, computation possibilities and about properties of used product by Analog Devices. In last part is showed implantation of decoder in DSP architecture.
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