Research of the highest energy cosmic ray particles is in the middle of the interest of theoretical and experimental physics. Their energies are several orders of magnitude higher than energies accessible at present accelerators. In this work, the reconstruction techniques of extensive air showers measured at the Pierre Auger Observatory are studied. For this purpose, extensive air showers are modelled in the simulation tool CORSIKA. Data collected at the Pierre Auger Observatory together with simulations are used to calculate resolutions of reconstruction methods. The Multiple--eye reconstruction is the main interest of this work. It can be used for independent verification of experimental results of the Observatory.

13548805670613-46162052c208770f99e83a586780d16c.txt As the technologies for the realisation of the idea of the Semantic Web have evolved rapidly during past few years, it is possible to use them in variety of applications. As they are designed with the ability to process and analyze semantic information found in the data in mind, they are particularly suitable for the task of enhancing relevance of the document retrieval. In this work, we discuss the possibilities of identifying a suitable subset of the expressing capabilities of the SPARQL querying language and create a component that encapsulates the technical details of its usage. Page 1

Hlavním cílem této práce byl souhrnný pohled na trh úrokových futures. Z počátku byly vysvětleny základní pojmy a vztahy a postupně byly přidávány poznatky o jednotlivých arbitrážních a zajišťovacích vztazích. Důraz byl kladen na precizní vysvětlení dané problematiky na příkladech za použití reálných dat z trhu.

Marketing and commercial communication and the position of product placement within them; Product placement, the history, forms and the legal frame; Theory of measuring and evaluating commercial communications in general and specifical theories applicable for product placement; Experimental evaluation of these theories on concrete case.

Fish sperm cryopreservation becomes highly attractive due to increasing number of potential applications and it has been considerably developed over the past decades. Cryopreservation of fish sperm is expected to improve the broodstock management in hatcheries, simplify hybridization and selective breeding, and serve as a useful tool for biodiversity and conservation of endangered species programs. Nevertheless, its status nowadays is highly contentious due to absence of specific techniques and standardization in the developed protocols. Moreover, the heterogeneity of cryoresistance in sperm of some fish individuals and, strong impairment of the sperm quality and survival after cryopreservation, to date, present some challenges inhibiting wide applicability of this approach. Therefore, a better understanding of the mechanisms of spermatozoa cryo-injuries and the development of new and more effective methods for cryopreservation of fish sperm are of primary importance. In the current work, the causes of individual variability in sperm cryoresistance, influence of cryopreservation process on sperm quality parameters regarding application of uncontrolled cooling devices were investigated. One of the study outputs is the founding the possible causes of sperm cryoresistance heterogeneity in common carp (Cyprinus carpio) males. As a result, a negative correlation between changes in the contents of major lipid classes and sperm motility after cryopreservation was found. In particular, the increased level of phospholipid, cholesterol and free fatty acid in samples with low post-thaw motility percentage were observed and related to decrease in sperm cryoresistance in common carp sperm. In the investigation of the consequence of the application of uncontrolled cooling devices on post-thaw sperm parameters of sterlet sperm, it has been shown that sterlet sperm could be cryopreserved by both Styrofoam box and dry shipper devices studied. However, due to inability to precisely control cooling process in these devices, the cooling conditions can be changed by varying straw number during freezing in Styrofoam box or by straw position during freezing in dry shipper. As a consequence, these changes shift the optimal freezing rates needed for successful sturgeon sperm cryopreservation resulting in decrease in post-thaw sperm motility and fertilization ability. These results suggest the way of standardization of fish sperm cryopreservation protocols by selecting appropriate straw number or straws position when uncontrolled cooling devices are used. Finally, to explore the cryopreservation effects on fish spermatozoa, the Percoll density gradient centrifugation technique was elaborated and applied for the first time to sterlet (Acipenser ruthenus) sperm. That technique allows to select and analyse only the sperm population that survived cryopreservation procedure and saved high motility parameters. It was found that this spermatozoa subpopulation possesses minimal changes in protein profile in comparison to native sperm. Moreover, the differences in many proteins which were found in sperm suspension after cryopreservation without separation is related to the presence of non-viable and sperm wreckage subpopulations in the frozen-thawed sperm suspension. Collectively, all of these detected changes in sperm motility parameters, viability, and protein profiles of viable spermatozoa after freeze-thaw process suggest some explanations for the mechanism responsible for cryodamage of sperm and provides the background for further development of an efficient cryopreservation protocols. However, it should be also further studied if the Percoll separation technique could serve as a useful tool for both better understanding of non-lethal sperm cryodamages and improvement of assisted reproduction practice in sturgeon species.

The topic of this work is to verify appreciation of stereoskopy projection, description of its principle and forming interactive pictures of prisms and spatial situations by the use of stereoskopy projection. This aid should simplify teaaching process of stereometry at secondary schools, bodies at primary schools and mainly help to improve spatial imagination. Focus of the aid is to help pupils and students to see and to understand all key principles of geometry.

This thesis focuses on novel video retrieval scenarios. More particularly, we aim at the Known-item Search scenario wherein users search for a short video segment known either visually or by a textual description. The scenario assumes that there is no ideal query example available. Our former known- item search tool relying on color feature signatures is extended with major enhancements. Namely, we introduce a multi-modal sketching tool, the exploration of video content with semantic descriptors derived from deep convolutional networks, new browsing/visualization methods and two orthogonal approaches for textual search. The proposed approaches are embodied in our video retrieval tool Enhanced Sketch-based Video Browser (ESBVB). To evaluate ESBVB performance, we participated in international competitions comparing our tool with the state-of-the-art approaches. Repeatedly, our tool outperformed the other methods. Furthermore, we show in our user study that even novice users are able to effectively employ ESBVB capabilities to search and browse known video clips. Powered by TCPDF (www.tcpdf.org)

This thesis explores problematics of speaker localization using microphone array. Aim of this thesis is implementation of algorithms for speaker localization and experiments with those algorithms. Calculation of TDOA was done using cross-correlation and hyperbolic method was used to calculate position estimation. Finished microphone array is able to locate speaker within certain variance. Results of this thesis allow reader to make assumptions regarding accuracy of localisation using microphone array and ARM kit with limited performance. Precision of position estimation using microphone array reached several decimeters, but this precision is dependent on distance from microphone array.

The result of this thesis, focused on medical image registration, is an automatic image registration algorithm. It is constructed to be used on real ultrasonography images, created by perfusion imaging. In its introductory part, the thesis deals with registrations methods, next it describes types of optimization principles and single criteria functions served to determine correct image transformation. Based on the theoretical part, there are realized three optimization algorithms using three criterial functions, which served to registration of provided ultrasonography sequences. These algorithms are tested and results are passed on analysis, on its ground are judged its advantages and disadvantages.

This thesis evaluates the financial situation of the company XYZ, a.s. in the years 2002 to 2005 on the basis of selected methods of the financial analysis. It comprises proposals of possible solutions of identified problems which should result in the improvement of financial situation of the firm in future years.