3D LED cube

Cílem této práce bylo navrhnout a zkonstruovat LED kostku pro zobrazování vizualizací a upoutání pozornosti. S ohledem na zadání bylo stanoveno rozlišení 8x8x8. Pro celkové řízení a komunikaci s PC byla zvolena vývojová deska STM32F4 Discovery, která díky svým parametrům plně postačuje pro tuto aplikaci. Kostka tvořená z diod a napájecích vodičů bude usazena na řídicí desce, která bude obsahovat veškeré řídící a komunikační členy, včetně regulátoru napájení. Deska bude tvořit podstavec potáhnutý tkaninou pro lepší vzhled.The goal of this project is to design and construct a LED cube for visualization and imaging attract attention. With respect to the assignment was determined resolution 8x8x8. For the overall management and communication with the PC was chosen development board STM32F4 Discovery, which, thanks to it parameters, is sufficient for this application. Cube consisting of diodes and power wires will sit on the governing board, which will include all parts of management and communication, including the controller power supply. The board will be covered by colored fabric for a better look.

Precession electron diffraction studies of SrxBa1-xNb2O6 and CaxBa1-xNb2O6 single crystals

Crystal structures of two single crystals SrxBa1xNb2O6 and CaxBa1xNb2O6 have been reinvestigated using automated electron diffraction tomography method with beam precession. 3D reciprocal space has been reconstructed based on recorded tilt series. For both samples the crystal structure was refined and the tetragonal symmetry with space group P4bm was confirmed. The three dimensional reciprocal space allowed to observe and to study satellite reflections in both materials

Martensite reorientation after thermal cycling in NiTiCu shape memory alloys studied by EBSD technique

The Ni25Ti50Cu25 shape memory alloy exhibits one-step martensitic transformation. Transformation occurs between the B2 parent phase and the B19 orthorhombic martensite. The course of the martensitic transformation was in situ studied in the alloy with use of electron backscatter diffraction. During heating, reverse martensitic transformation occurs from the B19 orthorhombic martensite to the B2 parent phase. On cooling, from the parent phase the B19 martensite is formed. Obtained results proved that the B19 martensitic plates forms the variants indexed as 1, 3, and 5. Thermal cycling does not change the crystallographic correlation between the parent phase and the martensite. However, after cycling, different rearrangement of the martensitic plates can be received. In consequence, characteristic temperatures of the martensitic transformation are shifted

Innovations in the financial sector - The case of exotic foreign exchange options on the Polish market

This article discusses a problem of \u27toxic\u27 derivative financial instruments (TDIs) which occurred in Poland in 2007/2008 between Polish banks and some exporters, with the structure of a typical derivative instrument (call/put options) being firstly described. Many of them were \u27exotic\u27, i.e. previously unknown to Polish companies. Nevertheless, banks offered these instruments as products of advanced financial engineering innovations. Limited knowledge about such instruments was the main factor in causing further enterprises\u27 problems. Many companies declared bankruptcy in the effect of changes on the foreign exchange market or suffered from serious financial problems. General losses of Polish companies from \u27toxic\u27 financial instruments are estimated at EUR 1.5 to as much as 20 billion. This article discusses character of relations between banks and enterprises, arising from the derivative transactions. The article analyzes two main issues: (a) asymmetry of the option structure hedging exporters against a foreign currency risk for a narrow corridor of an exchange rate level and (b) lack of knowledge about consequences of a contracted derivative transaction presented by the exporters. A case of a transaction carried out by a major Polish company and a leading bank on the Polish market is described and analyzed. Analysis of this case confirms the hypotheses that structure of options transactions produce unequal distribution of risk between enterprises and banks

3D LED color display

Cílem této práce bylo navrhnout a zkonstruovat LED kostku pro zobrazování vizualizací a upoutání pozornosti. S ohledem na zadání bylo stanoveno rozlišení 8x8x8. Pro celkové řízení a komunikaci s PC byla zvolena vývojová deska STM32F4 Discovery, která díky svým parametrům plně postačuje pro tuto aplikaci. Kostka tvořená z diod a napájecích vodičů bude usazena na podstavci. Plochými vodiči bude připojena k desce s LED budiči, která bude obsahovat veškeré řídicí a komunikační členy. Implementovaný firmware bude mít v základu animace, taktéž jej bude možné řídit nadřazeným systémem. Podstavec bude potáhnut tkaninou pro lepší vzhled.The goal of this project is to design and construct a LED cube for visualization and imaging attract attention. With respect to the assignment was determined resolution 8x8x8. For the overall management and communication with the PC was chosen development board STM32F4 Discovery, which, thanks to it parameters, is sufficient for this application. Cube consisting of diodes and power wires will sit on the governing board, which will include all parts of management and communication. Implemented firmware will have a base animations, it is also possible to control by superior system.The board will be covered by colored fabric for a better look.

Jet properties from di-hadron correlations in p+p collisions at s**(1/2) = 200-GeV

An analysis of high pT hadron spectra associated with high pT $\pi^0$ particles in p+p collisions at s**(1/2) = 200-GeV is presented. The shape of the azimuthal angular correlation is used to determine the value of partonic intrinsic momentum \sqrt{\left} = 2.68 \pm 0.07(\rm stat) \pm 0.34(\rm sys) GeV/c. The effect of kT-smearing of inclusive $\pi^0$ cross section is discussed.Comment: To appear in the proceedings of 2nd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2006), Asilomar, Pacific Grove, California, 9-16 Jun 200

Spatial risk analysis in the town of Kyjov

This article deals with the issues of risk mapping using the geographic information system. These issues are described employing a case study conducted in the town of Kyjov. The case study is focused on the principle of risk mapping, which consists of the creation of a vulnerability map, threat map and the resulting risk map. The paper demonstrates the use of spatial risk mapping method for the risk analysis. The case study presented in this article justifies the hypothesis of the suitability of the GIS for the purposes of risk mapping. In addition, the case study carried out in Kyjov maps individual types of vulnerability, in other words the major assets in the territory. Furthermore, the article deals with mapping the threats in this town. On the basis of obtained data and the maps of vulnerability and threats the case study also presents the creation of the resulting risk map. Generally, the article verifies the hypothesis of using the risk mapping method for the needs of risk analysis in municipalities. © 2017, World Scientific and Engineering Academy and Society. All rights reserved.IGA/FLKR/2017/003, UTB, Univerzita Tomáše Bati ve Zlín

Phase analysis of NiTi shape memory wires and computer simulations of the superelastic effect

Shape memory alloys belong to the group of intelligent materials due to their exceptional properties related to reversible martensitic transformation. They show both superelasticity and shape memory effects. The modelling of the superelastic phenomena occurring in NiTi alloys is important due to its application in the further development of materials for dedicated applications. A computer simulation of static tensile test was carried out using the finite element method for NiTi wire and obtained results were compared with experimental curve. For the determination of phase composition at ambient temperature and courses of phase transitions during cooling and heating the X-ray powder diffraction and differential scanning calorimetry methods were used. X-ray diffraction phase analysis exhibited that the studied wire at room temperature has B2 — parent phase structure. Additionally, differential scanning calorimetry measurements showed that the phase transformations during cooling and heating occur in a temperature range of about –20 to +30 C