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Melting equipment in foundries
Toufar, Tomáš ; Blažík, Petr (referee) ; Pernica, Vítězslav (advisor)
The aim of this Bachelor thesis is a description of the properties and operation of selected melting equipment in foundries. History of metal processing and development of melting equipment are briefly described. Based on the findings, smeltering systems used in foundry practice were classified and the individual systems were described in terms of their advantages, disadvantages and application. At the end of thesis, melting equipment was assessed from technical-economic point of view.
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Influence of location of Al castings in a heat treatment furnace on mechanical properties
Toufar, Tomáš ; Vašťák, Patrik (referee) ; Horenský, Jiří (advisor)
The present Master thesis deals with location of aluminium castings in the heat treatment furnace and its influence on mechanical properties. As testing samples for the experimental part, tensile bars were used; they were cast from the subeutetic silumin AlSi7Mg0,6. These samples were placed in the furnace in the locations where temperatures were calibrated by the furnace supplier. Then, tensile tests were performed to evaluate the resulting mechanical properties of the samples. The experiment was carried out in the foundry of non-ferrous metals, MESIT foundry Ltd., Uherské Hradiště.
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Evaluation of Organization Culture for Creating Business Ethics Policy
Šubrtová, Renata ; Toufar, Tomáš (referee) ; Putnová, Anna (advisor)
The thesis deals with a concept of corporate culture as an important supposition of business ethics. In the first theoretical part, based on existing body of literature and research, the issue of corporate culture and its significant impacts on functioning and effectiveness of a particular organization is described. In the empirical part, the corporate culture of a specific organization is analyzed and described using the data obtained from The Denison Organizational Culture Survey (by Denison and Neal). Based on the research results, measures leading to the change of existing corporate culture are suggested.
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Influence of location of Al castings in a heat treatment furnace on mechanical properties
Toufar, Tomáš ; Vašťák, Patrik (referee) ; Horenský, Jiří (advisor)
The present Master thesis deals with location of aluminium castings in the heat treatment furnace and its influence on mechanical properties. As testing samples for the experimental part, tensile bars were used; they were cast from the subeutetic silumin AlSi7Mg0,6. These samples were placed in the furnace in the locations where temperatures were calibrated by the furnace supplier. Then, tensile tests were performed to evaluate the resulting mechanical properties of the samples. The experiment was carried out in the foundry of non-ferrous metals, MESIT foundry Ltd., Uherské Hradiště.
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Tomaszewski's conjecture
Toufar, Tomáš ; Šámal, Robert (advisor) ; Hladký, Jan (referee)
In 1986, Boguslaw Tomaszewski asked the following question: Consider n real numbers a1, . . . , an such that the sum of their squares is 1. Of the 2n expressions |ε1a1 + · · · + εnan| with εi = ±1, can there be more with value > 1 than with value ≤ 1? Apart from being of intrinsic interest in probability, an answer to this conjecture would also have applications in quadratic programming. However, even after more than thirty years the conjecture is still unsolved. In this thesis we settle a special case of the conjecture - we prove that the conjecture holds for vectors of the form (α, δ, . . . , δ) of sufficiently large dimension. This generalizes earlier result which showed that the conjecture holds for vectors of the form (δ, . . . , δ). 1
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Algorithmic metatheorems for matroids
Toufar, Tomáš ; Pangrác, Ondřej (advisor) ; Dvořák, Zdeněk (referee)
In the thesis we define a new width parameter for matroids called amal- gam width that is based on the operation of matroid amalgamation. The parameter is related to branch width for matroids representable over fixed fi- nite field in the sense that class of representable matroids of bounded branch width has bounded amalgam width. The decomposition allows us to decide monadic second-order properties in linear time on matroids of bounded amal- gam width, even for matroids that are not representable (provided we are given the decomposition). We also prove that the coefficients of the Tutte polynomial can be computed in polynomial time for matroids of bounded amalgam width.
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Melting equipment in foundries
Toufar, Tomáš ; Blažík, Petr (referee) ; Pernica, Vítězslav (advisor)
The aim of this Bachelor thesis is a description of the properties and operation of selected melting equipment in foundries. History of metal processing and development of melting equipment are briefly described. Based on the findings, smeltering systems used in foundry practice were classified and the individual systems were described in terms of their advantages, disadvantages and application. At the end of thesis, melting equipment was assessed from technical-economic point of view.
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Evaluation of Organization Culture for Creating Business Ethics Policy
Šubrtová, Renata ; Toufar, Tomáš (referee) ; Putnová, Anna (advisor)
The thesis deals with a concept of corporate culture as an important supposition of business ethics. In the first theoretical part, based on existing body of literature and research, the issue of corporate culture and its significant impacts on functioning and effectiveness of a particular organization is described. In the empirical part, the corporate culture of a specific organization is analyzed and described using the data obtained from The Denison Organizational Culture Survey (by Denison and Neal). Based on the research results, measures leading to the change of existing corporate culture are suggested.
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