Surface fault rupture poses a serious threat to infrastructure in many seismically active regions, but knowledge about the factors which control the likelihood of surface displacement is limited. Current probabilistic frameworks rely only on fault mechanism and moment magnitude to predict the probability of rupture to the ground surface. However, recent work has shown that there may be other parameters which also deserve consideration. For example, statistical analyses have demonstrated that variation in near surface material stiffness may significantly affect the probability of surface rupture over reverse faults. In addition, numerical investigations indicate that the rupture history of native soil deposits also greatly influences the nature of rupture propagation. Given that evidence exists which suggests multiple variables are at work, this study aimed to improve our understanding of which are most critical for predicting surface fault rupture hazard. We sought to generate physical evidence concerning the impact of near surface soil stiffness, soil type, and rupture history on fault rupture propagation. A 3 meter long by 1 meter wide fault box apparatus was constructed to simulate idealized reverse fault rupture oriented at 45° beneath 60cm of soil. Relatively large dimensions were chosen so that shear wave velocity measurements could be taken directly without interference from the walls of the apparatus. Experiments were conducted on loose sand, dense sand, stiff clay, and soft clay. The same sand was used for both the dense and loose sand experiments and is identified as Monterey #2/16. The clay was a scale model mixture of San Francisco Bay Mud and consisted of kaolinite, bentonite, class C fly ash, and water. Separate batches of clay were mixed with differing final water contents for the stiff and soft clay experiments. In each case, the fault box was filled to 60 cm and rupture was driven to the surface in two phases. The first phase represented an undisturbed native soil deposit with no existing shear band. The second simulated repeat rupture along a pre-existing shear band. The results indicate that increasing material stiffness promotes rupture propagation in both sand and clay. When disturbed soil is re-ruptured, surface rupture occurred much more readily in all materials. Overall, the presence of a pre-existing shear band was shown to have the greatest impact on the likelihood of surface rupture, though both material stiffness and type were also found to have a strong influence as well. The fault box experiments support the findings from previous work as well as shed new light on which parameters are most critical for accurate surface rupture predictions.

The subject of this thesis is the measurement of flow properties of powder materials. The theoretical part deals with particulate substances in general and describes the basic principles of flow behavior of powder materials. In the theoretical part is a description of the Jenike Shear Tester and Ring Shear Tester. The following section summarizes the Standard Shear Testing Technique. Measurements were carried out on the new apparatus Laboratory of Chemical Engineering. The measurement was selected 5 samples of limestone Omyacarb ® from Omya CZ s.r.o. Individual samples varied in four different particle size distributions and one sample was surface-modified hydrophobic stearic acid. Tests were conducted at 3 levels of the preshear normal stress - 2.5 kPa, 5 kPa and 7.5 kPa. Distribution function of particle size in the material data sheets supplied by the manufacturer were verified using a laser particle size analyzer Sympatec Helos KR purchased in the Materials Research Centre at the Faculty of Chemistry at Brno University of Technology.

The basic aim of this thesis is to design optimisation of the brake bench in question. For this kind of optimisation, it was necessary to ascertain which failings the current brake bench exhibited. After ascertaining such failings, design of modification to this brake bench must be performed. In terms of this thesis, it was ascertained that the brake bench has insufficient brake power. Based on this finding, two alternatives for modifications have been selected. The first is replacement of the dynamometer and the second is insertion of a gear box into the brake bench. Rigidity analysis was performed on the gear casing.

This thesis describes the steering system parts, the most common used parts and rates their advantages and disadvantages. These findings are then transferred into the Formula Student steering system design. The thesis also presents procedures leading to determine load of steering system, which is taken into account in steering system design. The final version of steering system is analyzed of stiffness.

The thesis deals with verification of applicability of biogenic binders during casting of gray cast iron. Applicability of these binders for making moulds as well as cores was verificated. The introduction describes strength of cured mixture with biogenic binder including influence of additives and refractory coating. The main part describes process of manufacturing of castings being poured into the biogenic binder bonded moulds. Pouring castings with cores bonded with the same binder is described as well. The last part deals with assessment of the given tests. The thesis comprises photodocumentation of poured samples.

v anglickém jazyce Legal aspects of electronic communication in administrative procedures The dissertation thesis has two basic parts, the first and largest part offers a comprehensive view on electronic communication with public authorities in the Czech Republic and the possibilities of electronic identification. The second part of the dissertation thesis is focused on legal aspect of personal data protection in electronic communication with abovementioned authorities. In both of these parts, the current EU legislation (e.g. eIDAS and GDPR) is taken into account. The first chapter contains an analysis of basic legal terms and institutes in the area of electronic communication and identification as well as in the field of personal data protection (e.g. data message, electronic signature, authentication, personal data and invalidity of delivery). Detailed analysis of legislative development in the area of electronic communication follows. Particular attention is paid to a launch and operation of the data box information system and legal effects of electronically signed (or sealed) documents. The fourth chapter deals in detail with specific legal issues related to communication through the data box information system (in particular to legal effects of service which suffers from a legal defect caused...

This thesis introduces a new chaos-based Advanced Encryption Standard (AES). The AES is a well-known encryption algorithm that was standardized by U.S National Institute of Standard and Technology (NIST) in 2001. The thesis investigates and explores the behavior of the AES algorithm by replacing two of its original modules, namely the S-Box and the Key Schedule, with two other chaos- based modules. Three chaos systems are considered in designing the new modules which are Lorenz system with multiplication nonlinearity, Chen system with sign modules nonlinearity, and 1D multiscroll system with stair case nonlinearity. The three systems are evaluated on their sensitivity to initial conditions and as Pseudo Random Number Generators (PRNG) after applying a post-processing technique to their output then performing NIST SP. 800-22 statistical tests. The thesis presents a hardware implementation of dynamic S-Boxes for AES that are populated using the three chaos systems. Moreover, a full MATLAB package to analyze the chaos generated S-Boxes based on graphical analysis, Walsh-Hadamard spectrum analysis, and image encryption analysis is developed. Although these S-Boxes are dynamic, meaning they are regenerated whenever the encryption key is changed, the analysis results show that such S-Boxes exhibit good properties like the Strict Avalanche Criterion (SAC) and the nonlinearity and in the application of image encryption. Furthermore, the thesis presents a new Lorenz-chaos-based key expansion for the AES. Many researchers have pointed out that there are some defects in the original key expansion of AES and thus have motivated such chaos-based key expansion proposal. The new proposed key schedule is analyzed and assessed in terms of confusion and diffusion by performing the frequency and SAC test respectively. The obtained results show that the new proposed design is more secure than the original AES key schedule and other proposed designs in the literature. The proposed design is then enhanced to increase the operating speed using the divide- and-conquer concept. Such enhancement, did not only make the AES algorithm more secure, but also enabled the AES to be faster, as it can now operate on higher frequencies, and more area-efficient.

All kinds of products have economic, social and environmental impact throughout their entire life cycle. Today’s growing need for electronic devices contributes to the increasing problem within these fields.  The aim of this study is to investigate and determine the impact of a chosen Teracom Group product from a sustainability perspective and to develop recommendations regarding how to proceed, in order to reduce the impact of products. This study is mainly focusing on the environmental aspect of the concept of sustainability. A life cycle assessment (LCA) of a set-top box (STB) is conducted based on chosen indicators by using the software SimaPro. The goal of the assessment is to identify the phases within the life cycle with largest environmental impact and contribute to Teracom Group’s further sustainable work. 18 impact categories are included to express emissions and use of natural resources. The result clearly shows that the production phase has the largest environmental impact within categories such as terrestrial acidification, human toxicity, freshwater ecotoxicity, marine ecotoxicity, urban land occupation and metal resource depletion. The use phase affects the environment foremost within climate change, ozone depletion, terrestrial ecotoxicity, ionising radiation, agricultural land use, natural land transformation and water depletion. Transports and the waste scenario only have a small effect on certain categories. The experiences of this study are discussed, demonstrating the difficulty in making an LCA in the position of being at the company purchasing products, not at the company manufacturing them. The company has previously not focused enough on sustainability regarding products. An LCA performed by the supplier would be more reliable due to a better possibility of collecting accurate data. Communication and cooperation between the company and its suppliers are key solutions. Higher requirements during procurement should be put on the products, including demands on performed LCAs with clearly described references and methods, critically review by a third party.

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It is well known that transportation means high and varying loads for products as well as packages. To develop corrugated boxes with optimal design and efficient use of raw materials is crucial. Vibrations and shocks acting on pallets during transportation are transferred to the corrugated boxes and considerably reduce the integrity and life time of the boxes. The development of experimental and analytical tools for measurement and prediction of the influence of dynamic loads on the box performance, such as stacking strength and conservation of stacking pattern would therefore be of large practical importance. In order to develop such tools, it is important to know the load distribution between different boxes. This master thesis presents a technique for investigating these stresses based on a pressure sensitive film, which gives many data points. A series of tests using random and sinusoidal vibration testing have been done utilising this technique and results are presented for different positions on the pallet and for different box filling methods. Investigations performed on the vibrations of the boxes also demonstrate a pitch type of motion. A level-crossing study on the forces existing between the boxes shows a Rayleigh force distribution. A mathematical model is also proposed for simulation of a stacking system. Advantages and disadvantages with this technique and with the model are described. Comparison between the experimental and numerical results shows a proper correlation. Using the pressure sensitive film as a quantitative sensor and applying the recorded data for the statistical study of the contact forces existing in a stack of boxes gives useful and important results for further analysis of the fatigue life and vulnerable positions of boxes.