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Approach to the nuclaer safety of the 3rd generation nuclear reactors
Pavlíček, Michal ; Kolář, Jaroslav (referee) ; Kolář, Jaroslav (referee) ; Matal, Oldřich (advisor)
The main target of the master´s thesis is reviewing the generation III nuclear reactors in term of the nuclear safety. At first we have to learn some theory of the nuclear safety in order to understand safety systems of the generation III nuclear reactors. Therefore the thesis is divided into two parts. Legislative and technical approaches to nuclear safety are mentioned in the first part. Regulatory bodies, whose task is to supervise nuclear safety in the nuclear power plants, belongs to the legislative approaches. There are defined terms such as defence in depth, redundancy, diversity, etc. There are mentioned methods to assessing nuclear safety – deterministic and probabilistic methods, especially probabilistic methods, for which a simple example is provided. There are also mentioned active and passive safety systems and their significance for nuclear safety and inherent safety too. There is an example of the function of the active and passive safety systems of the EDU nuclear power plant in conclusion of this issue. The second part deals with description of the selected nuclear reactors in context of the construction of the new units of nuclear power plant in Temelín. The nuclear reactors from companies, which applied for the public tender opened by ČEZ, a. s., for the construction of the ETE 3+4. Thus, the nuclear reactor MIR-1200 by ATOMSTROYEXPORT (Russian Federation), the nuclear reactor AP1000 by WESTINGHOUSE (USA) and the nuclear reactor EPR by AREVA (France) are taken into account . Comparison of the generation II and these generation III+ nuclear reactors necessarily belongs to this master´s thesis. These the generation III+ nuclear reactors are compared with the nuclear reactor VVER 440 (EDU) and in particular with the nuclear reactor VVER 1000, which is operated in the nuclear power plant Temelín. The final chapter contains generally appraisal of the whole problem.
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Segmented wavelet transform of images
Kučera, Michal ; Rajmic, Pavel (referee) ; Průša, Zdeněk (advisor)
This master’s thesis is dealing with modification of classical discrete time wavelet transform algorithm to be able to split input image into several segments which could be independently processed. Segmented discrete time wavelet transform is introduced and implemented and the tests shows that it produces the similar values of wavelet coefficients as the classical approach. Complete independent image segment processing is allowed thanks to inverse segmented discrete time wavelet transform. It’s obvious that redundancy calculations appear when the image is processed segment by segment compared to transform the image at once. The redundancy rises with increasing decomposition depth and filter length, however it falls when the segment dimensions are increased. It happens because it is worked with smaller amount of segments which needs to extend. The extension with neighbor samples is the only source of redundancy. The thesis also contains description of two different approaches to signal border extension: firstly complete extension for all decomposition levels before the transformation itself and secondly classical method when the signal is extended in each decomposition step. Both approaches have the same results of image reconstruction, but it distinguishes in calculated wavelet coefficients. Four kinds of signal border extension are compared by using MSE and PSNR. The results of all approaches are similar, however the smooth padding of order 0 and symmetric-padding could be slightly favored against smooth padding of order 1 and zero-padding which shows higher MSE.
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Analysis of personnel management in selected company
POKORNÝ, Radek
This work focus to analysis of personnel management in chosen company. In the first part I focused to teoretic side of theme. The theory I draw from many czech and foreign authors. Theori is focused on human resource management and managerial functions as mativatin, stimulation, reviews, remuneration. In practical part I focused to building company OHL ŽS a.s. focused to division in České Budějovice-Plzeň. At the begining I introduced company and then I analysis parts of the theoretic section. After the analysis I did survey and then I consulted results with the management. From the survey is obvious that company make a mistakes in motivation of personnel, low efficiently of meetings, burden tasks. Many of personnel is satisfied with a team. In conclusion I proposed changes to improvement.
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Outplacement
Šmejkalová, Radka ; Šikýř, Martin (advisor) ; Němec, Otakar (referee)
This thesis deals with the redundancy of employees and then providing outplacement services. The aim is to understand and analyze the services of outplacement provided by consulting organization Tres Consulting, Ltd. The work is divided into three parts. The first part describes the theoretical background to the planning of human resources, the possibility of redundancy and subsequent assistance to redundant employees. The second part consists of research of EQUAL association focused on knowledge of the concept outplacement in Prague and Usti nad Labem. The third part of the thesis is an interview at Tres consulting company. Topics are continually commented and evaluated during this interview.
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Redundancy in data networks
Šoun, Jan ; Pavlíček, Luboš (advisor) ; Beneš, Jiří (referee)
This thesis focuses on redundancy in data networks and on technologies which are used to achieve high availability in network infrastructure. This thesis is based on industry standards published by well-known standardization authorities. One proprietary technology which can effectively replace these standards and simplify the whole network is also presented in more detail. The theoretical part individually describes all such technologies and standards. The practical part deals with an appropriate combination of these technologies and their application in a specific product environment. This work is meant to describe the whole concept of high availability in network infrastructure and should be instrumental in understanding how these technologies are deployed in practice.
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O odhadu vzájemné informace
Marek, Tomáš ; Tichavský, Petr
The mutual information is useful measure of a random vector component dependence. It is important in many technical applications. The estimation methods are often based on the well known relation between the mutual information and the appropriate entropies. In 1999 Darbellay and Vajda proposed a direct estimation methods. In this paper we compare some available estimation methods using different 2-D random distributions.
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State-space generalized predictive control for redundant parallel robots
Belda, Květoslav ; Böhm, Josef ; Valášek, M.
The paper deals with the design and properties of Generalized Predictive Control for path control of the redundant parallel robots. It summarizes classical and root minimization of the quadratic criterion and direct and two-step design of actuators respectively. As an example, the planar redundant parallel robot is used. Moreover, the paper presents several possibilities to use Predictive control for compliance of additional requirements (smooth trends of actuators or fulfillment antibacklash condition).
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Chaotic time-series prediction
Dědič, Martin ; Tichý, Vladimír (advisor) ; Smrčka, Pavel (referee)
This thesis focuses on possibility of chaotic (specially economic) time-series prediction. Chaotic time-series are unpredictable in long-term due to their high sensitivity on initial conditions. Nevertheless, their behavior should be more or less predictable in short-term. Goal of this thesis is to show, how much and if any prediction, is possible by non-linear prediction method, and try to reveal or to reject presence of chaotic behavior in them. Work is split into three chapters. Chapter One briefly introduces chosen important concepts and methods from this area. In addition, to describe some prediction methods, there are outlined which indicators and methods are possible to use in order to find possibilities and boundaries of this prediction. Chapter Two is focused on modifications of FracLab software, which is used for create this prediction. Last chapter is experimental. Besides the description of examined time-series and methods, it includes discussion of results.
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Solving the Redundancy in Organization
Veselá, Věra ; Stříteský, Marek (advisor) ; Šikýř, Martin (referee)
Competitive environment exacts from companies to be flexible; solving the redundancy becomes commonplace for them. This work has for object outplacement programs in two companies. Based on analysis of these programs there are defined principles for formation and realization of outplacement program in general.
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