Academic literature on the topic 'Řízení svazku'

The thesis deals with problems of control and diagnostics of electron beam technological devices which use electron beam for localised intensive heating of a material. A brief description of the electron beam welder MEBW-60/2 is included; the author has participated on its development and implementation. Main topics are the analysis of deflection system properties and the measurement of current distribution of the beam (so-called beam profiles). Geometrical aberrations, hysteresis, stability and dynamics of a single-stage magnetic x-y deflection system are described. Suitable measurement procedures and correction methods are introduced. Methods of transverse and longitudinal beam profile acquisition is presented using successive sampling of the local current density of the beam by a modified Faraday cup. The data processing and evaluation of characteristic beam parameters are shown. The presented methods were verified by fourteen experiments using the electron beam welder. The methods have proven to be useful in practical evaluation of the device properties.

This thesis contains design of beamforming network designed for passive radar antennas. The first part contains theory of passive radars and beamforming networks. The next part implies design of beamforming network at the block digram level. Then are choosed circuits for amplitude and phase control, including the design of control communication. It follows by realization of IQ phase shifter and his automatic measurement. Based on this results is phase shifter adjusted and PCB of 2x2 beamforming network is designed. Last part includes design of control application (Matlab) and control program for STM32F407VG microcontroller.

The master s thesis deals with the design of the beamsteering antenna. Methods of the beamsteering and the final antenna design are described. This antenna operates in the ISM band with the central frequency of 5,8 GHz. The antenna is designed in the CST Studio Suite 2020. Butler matrix was designed as a feed network implemented as substrate integrated waveguide. An array of patch antennas was used for radiation.

This diploma thesis deals with electrical conductivity of a graphene sample, preparation of a graphene field-effect transistor and his irradiation by electron beam. In the theoretical part of the thesis, we describe electronic properties of graphene, preparation of graphene by CVD and its transfer to Si substrate with SiO_2 layer. Experimental part of this thesis is focused on the preparation of a graphene field-effect transistor for use in UHV conditions. Futher describes electron beam scanning over the transistor and creation of current maps of tranzistor. In the last part, the thesis deals with influence of electron beam on transport properties of graphene layer and doping of graphene layer by electron beam.

This thesis deals with the area of management of business informatics at the Floorball Union. It is a very specific type of organization with a mixed organization structure and decision-making processes divided between elected bodies and the employee structure of the organiza-tion, where the area of business informatics is, due to the mission and goals of the organiza-tion, rather at the periphery of the interest of the management of this sports association. It is so despite the fact that the floorball union has developed and runs its own information system FIS. Based on the knowledge and experience acquired in the theoretical part, the thesis aims at assessing the current model of management of business informatics, defining its biggest shortcomings and proposing adjustments to this model. Within the assessment of the management model, the thesis further evaluates the benefits of the implementation of the infor-mation system FIS, with the aim of evidencing the rightness of the decision to develop and implement the system, both from the point of view of non-financial benefits, as well as financial impacts and possibilities of further development and growth of the organization. The theoretical part of the thesis contains a description of the structure, goals and mission of the sports association, and attention is then devoted to the selected models, frameworks and approaches to management of business informatics and measuring its benefits. The practical part is devoted to an analysis of the current state of management of business informatics, and it includes a description of all its resources and relations, as well as a definition of its biggest shortcomings. Based on the findings, I have proposed a centralization of the management model including proposals of specific measures that will eliminate the discovered shortcom-ings to maximum extent. Compared to standards, the model of management of business in-formatics has been in some areas adjusted according to the needs, requirements and characteristics of the organization for which it is being designed. Another significant part of the practical part of the thesis contains evidence regarding the benefits of the implementation of the information system FIS. It is this part in particular, along with the creation of a new model of company information system management for the Czech Floorball Union, that I consider the most significant contribution of my diploma thesis.

This dissertation explores governance of national sports organizations (NSOs) in the Czech Republic and thus reflects contemporary course of events in the Czech sport. The aim of the dissertation is to explore governance of Czech NSOs with special focus on governance structure and transparency. Particularly, the dissertation examines compliance of Czech NSOs with codes of good governance and determines relations between governance structure, transparency and effectiveness of Czech NSOs. Mixed method approach was used in equal status sequential design (QUANT -> QUAL) Firstly, content analysis of websites of 67 Czech NSOs was conducted. The analysis allowed to determine the level of transparency and also provided variables for quantitative part of the study. Purposive sampling was used to choose nine NSOs where subsequent interviews with a CEO or a head of the board were done. And finally, quantitative data survey was conducted in 67 NSOs using phone interviews and e-mail survey. The quantitative data were processed using MS Excel and SPSS and, hypotheses were tested using standard statistical tests. The results are presented in three chapters. First, applicability of five elementary approaches to effectiveness is presented and combination of goal attainment and system resource approach is implemented. Second, governance structure of NSOs is analysed revealing substantially higher variability of governance models in comparison with theoretical presumptions. Moreover, a new framework of governance structure classification was developed. Third, transparency was identified as the most notable principal. Results reveal very low level of the transparency within Czech NSOs and explore the sources and impact of low transparency. For instance, more transparent NSOs are more effective using system resource approach. Overall, the dissertation provides a new deep insight into Czech NSOs governance and brings numerous recommendations for Czech NSOs.

The main aim of this tesis is the analysis of the collective bargaining process which should be helping the employees to reach better working conditions. The collective contracts from the CR will be explored to see if it this is true. Other aims are : 1. Description of the evolution of the Trade Unions in the Czech republic, Greece and Italy. 2. Description of the legal frame work and today situation of the Trade Unions in these countries. 3. Consideration of the influence of the financial crises on the collective bargaining. The tesis explores on the base of the data from the years 2008 and 2009 the influence of the financial crises on the collective bargaining in the Czech republic and explores if the salaries have economical containt and how the union members'demands change according to the general economic situation. As for the main target it tries to prove the success and necessity or its opposite of the collective bargaining in the reality of the Czech republic.

Master theses of Automatic Shift Control of the Digital Data Recorder is primarily concerned to design and construction of equipment used for measuring the half-width of the laser beam. The introductory part is devoted to the related theoretical basics and serves for better orientation in the following chapters. The second part is devoted to construction, completion and basic setting of product.

The thesis deals with preparation of graphene nanostructures and their applications in the measurement of transport properties of graphene. The contacts for measurement of resistance are fabricated by electron beam lithography on graphene exfoliated flakes, CVD graphene layers and grains. Graphene is also shaped using the same method. Resistivity of the layer, concentration and mobility of charge carriers are determined by different approaches. Hysteresis appearing in dependence of resistivity on the gate voltage is discussed as well. A significant part of the work is dedicated to monitoring the response of graphene resistance to relative humidity changes and potential use of graphene as a sensor of relative humidity.

Value-range analysis is a static analysis technique based on arguing about the values that a variable may take on a given program point. It can be used to prove absence of run-time errors such as out-of-bound array accesses. Since value-range analysis collects information on each program point, data-flow analysis can be used in association with it. The main goal of this work is designing and implementing such a value-range analysis tool. The work begins with an introduction into the topic, an explanation of data-flow and value-range analyses and a description of abstract interpretation, which provides the formal basis of the analyser. The core of this work is the design, implementation, testing and evaluation of the analyser. In the conclusion, our personal experience obtained in the area of the thesis is mentioned, along with a discussion of a possible future development of the designed tool.