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Ball-Joint Limited Heating during Accelerated Testing
Kříž, Ondřej ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
The object of this work is design model of ball joint and define boundary conditions for real condition representation as most exact as possible. Then set parameters of test in TRW-DAS, a.s. for prevention of reacceleration with change of failure mode. Summary of ball joints, their testing and accelerated tests is in the beginning of the work. Next part describes ball joint creation in Pro/Engineer, transfer to Ansys, preparing to solution, fatigue test evaluation and comparing with create model.
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Analysis of operation data for purposes of optimization
Slavíček, Martin ; Pavlas, Martin (referee) ; Touš, Michal (advisor)
This thesis deals with analysis of operation data for purposes of optimization. The thesis is divided into four chapters. First chapter focuses on present and future development in waste management legislation. It mainly deals with prevention, recycling and disposal of waste. Second chapter more closely describes waste-to-energy process. This chapter also describes the technology of municipal waste incinerator in Liberec, Termizo, a.s. Third chapter starts with description of tools used in design of the models based on operation data. Then the models for individual technological nodes are described. The last part is focused on building a complex model of Termizo using previous results.
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On possible approaches to detecting robotic activity of botnets
Prajer, Richard ; Palovský, Radomír (advisor) ; Pavlíček, Luboš (referee)
This thesis explores possible approaches to detecting robotic activity of botnets on network. Initially, the detection based on full packet analysis in consideration of DNS, HTTP and IRC communication, is described. However, this detection is found inapplicable for technical and ethical reasons. Then it focuses on the analysis based on network flow metadata, compiling them to be processable in machine learning. It creates detection models using different machine learning methods, to compare them with each other. Bayes net method is found to be acceptable for detecting robotic activity of botnets. The Bayesian model is only able to identify the botnet that already executes the commands sent by its C&C server. "Sleeping" botnets are not reliably detectable by this model.
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Evaluation and forecast of economic development of the company Čepro, a.s.
Dušková, Lidia ; Boukal, Petr (advisor) ; Klečka, Jiří (referee)
This bachelor thesis focuses on the evaluation and prediction of the future development of the joint stock company Čepro, a.s. It is divided into two main parts, the theoretical part and practical part. Theoretical part describes methods that will be used and applied in practical part. Practical part deals with the evaluation of the development of Čepro, a.s. in years 2008-2013. The basic financial indicators will include the indicator of Economic Value added and other significant models. The results from the analysis will be described and discussed in detail.
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Hydrodynamic mixing of water-ask mixture in vessel
Holub, Přemysl ; Franc, Zdeněk (referee) ; Habán, Vladimír (advisor)
Master´s thesis Hydrodynamic mixing of water-ash mixture in vessel is interested in describing fluid and solid particles flow in a vessel. The mixing was conducted in cylindrical vessel by a radial nozzle. The goal of the thesis is to describe flow field and places where the most of the particles are descending according to position, depth, flow rate and nozzle orientation in the vessel. An experiment was conducted in order to investigate and document 8 different positions and orientation of the nozzle. Significant changes in flow fields and mixing time were observed. A mathematical model of the vessel with the nozzle was created in Fluent program. Places with the lowest velocities according to the model were in good agreement with places where the most of the solid particles were descending.
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Theory of the Firm from the view of New Institutional Economics and some Aspects of Institutional Framework Quality in the Czech Republic
Vitík, Robert ; Sirůček, Pavel (advisor) ; Soukup, Jindřich (referee) ; Žák, Milan (referee) ; Mlčoch, Lubomír (referee)
This doctoral thesis presents the basic and the main developments of the theories of the firm rooted in Transaction Cost Theory (TCT). Since the article of Coase on the nature of the firm, this question has been elaborated by number of economists. In my point of view, I would like to introduce the last theory developed by the representative of the school called New Institutional Economics. The theory concentrates on the role of institutions. We distinguish institutions formal and informal. The formal are laws, constitution, regulations, contracts and other written rules. The informal don't require a written form and they represent informal restrictions such as rules of behaviour, conventions, traditions and habits. The main purpose of the institutions in their various forms is mainly to protect property rights, enforce voluntary contracts and establish the physical and regulatory infrastructure to facilitate economic activity. Generally, we can call them the rules of the game. They inform us about possible economic behaviour and give us basic restrictions in this sense. First -- the theoretical part of this thesis, we can find a simple model with human asset specificity based on TCT. The main proposition is that transactions with a high level of asset specificity are more probably internalised because the firm handles better such transactions compared to the market, even if asset specificity increases the cost of coordination in the firm. If the hierarchy, for example through the formation of routines, may enhance the efficiency compared to the market, we can modify the previous model. The model developed according to a Knowledge-based view assumes that asset specificity reduces transaction costs inside the firm and increases transaction costs on the market. In the conclusion of the theoretical part is discussed the reply on first formulate hypothesis if the TCT is still compatible with a newer Capability and Knowledge based view. In my opinion based on the presented arguments and views, both theories are compatible, they can answer more questions and explain more issues. The last step links the aforementioned theories into one Theory of firm boundaries. In the practical part of the thesis, I bring basic arguments about the institutional framework quality in the Czech Republic. These arguments rely on the latest studies of the international institutions such The Transparency International, The Heritage Foundation, The Kurtzman Group and mainly The World Bank. Studies reveal certain weak arrangements concerning for example the number of procedures when starting a business, complicated construction permits, rigidity of working hours, time-consuming and administrative demanding tax system, duration of judicial process which results in ineffective contract enforcement and mainly poor protection of property rights. Taking these disclosures into account we have to say that emergent transaction costs are enormous. These transaction costs influence negatively the competitiveness of the firms and the whole Czech economy. Therefore a negative response to the second hypothesis relating to the quality of the institutional framework in the Czech Republic.
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Numerické řešení sdílení tepla v proudu dopadajícím na stěnu
Kozel, K. ; Louda, Petr ; Příhoda, Jaromír
The paper deals with the numerical solution of 3D impinging turbulent jet cooling a weakly heated wall. The solution was carried out using the SST model and/or an explicit algebraic Reynolds stress model and completed by a generalized gradient-diffusion hypothesis for modelling of turbulent heat flux. While the EARSM model gives good results for the velocity field, all used models overestimate heat transfer in the impingement region.
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Migration to selected EU countries: Labor market integration
Kaclíková, Roberta ; Šaroch, Stanislav (advisor) ; Němcová, Ingeborg (referee)
The aim of this master thesis is to analyse the labor market of European Union and its certain countries in relation to the immigration with the backgound of various social welfare models. The paper is analysing the topic of labor market of European Union, integration of immigrants on this market, with focus on economies and labour markets of Sweden, United Kingdom and Germany as countries with high level of immigration that are representing three different social welfare models, such as Nordic model, Liberal model and Conservative model. The main objective of this thesis is the analysis of labor markets in selected countries of the European Union in relation to immigration and their subsequent comparison using the background of different social welfare models. The result is the evaluation of effectivness of the various social models based on statistical data, acquired knowledge and performed comparisons. The thesis is divided into four chapters and contains 13 tables and 8 charts.
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Replacement of headlamp parts screw fixation by a plastic nail
Lysa, Bohuslav ; Píška, Miroslav (referee) ; Polzer, Aleš (advisor)
The master thesis covers several issues linked to a substitution of headlamp screw fixation by a plastic nail. The thesis includes an analysis of the headlamp technology, including description of the prescribed durability tests. On the basis of the analysis some new designs of plastic nails are proposed, consistent with characteristics of plastic materials. Selected outcomes of the analysis have been tested as prototypes and verified with Finite Elements Method in SimDesigner including 3D modeling capabilities provided by the Catia V5. The feasibility study regarding a casting form of the new design of plastic nails and technical economic valuation for contingent assembly mounting is included in the thesis.
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