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Design of single-purpose cutting machine for shortening of plant stems
Žižka, Jakub ; Brandejs, Jan (referee) ; Vespalec, Arnošt (advisor)
This bachelor thesis deals with the design of a single-purpose machine for cutting plant stems. The task of the machine is to cut already partially shortened and stripped wheat straw stalks to the required length. The operation of the machine is fully automated, the operator only ensures the supply of semi-finished products to the machine, removes the finished stalks and controls the operation of the machine. In the thesis is a search describing the existing technologies used for cutting plant stalks, the possibility of driving a single-purpose machine and possible solutions for transporting stalks. The research also includes an analysis of the necessary mechanical and physical properties of wheat stalks. Subsequently, the analysis of information from the research part of the thesis and the definition of important parameters for the design construction balance sheet is performed. In the practical part of the work are developed concepts of possible solutions of individual structural nodes and justification of the choice of individual solutions. The second part of the practical part deals with the construction design of a selected conceptual design, including calculations. The work shows a possible solution for the construction of a machine for processing semi-finished products with a large variety of shapes.
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The runner for the straight-flow turbine for small hydro power Sobotín
Žižka, Jakub ; Veselý, Jindřich (referee) ; Haluza, Miloslav (advisor)
The thesis deals with the problem of optimizing an existing unused turbine for use in a different location than the designed. The goal is to reduce the flow through the turbine by changing the runner geometry while increasing the head, with the least possible decrease in efficiency. The individual modifications of the hydraulic shape are based on the knowledge of the basic relations for the designing of hydrodynamic machines. Numerical fluid mechanics is a tool for validating the effect of individual adjustments. The hydraulic design of the new runner and draft tube of the axial propeller turbine with a fixed guide vanes is performed. Based on the CFD simulation, a universal turbine characteristic with a new hydraulic shape is compiled.
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The runner for the straight-flow turbine for small hydro power Sobotín
Žižka, Jakub ; Veselý, Jindřich (referee) ; Haluza, Miloslav (advisor)
The thesis deals with the problem of optimizing an existing unused turbine for use in a different location than the designed. The goal is to reduce the flow through the turbine by changing the runner geometry while increasing the head, with the least possible decrease in efficiency. The individual modifications of the hydraulic shape are based on the knowledge of the basic relations for the designing of hydrodynamic machines. Numerical fluid mechanics is a tool for validating the effect of individual adjustments. The hydraulic design of the new runner and draft tube of the axial propeller turbine with a fixed guide vanes is performed. Based on the CFD simulation, a universal turbine characteristic with a new hydraulic shape is compiled.
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Design of single-purpose cutting machine for shortening of plant stems
Žižka, Jakub ; Brandejs, Jan (referee) ; Vespalec, Arnošt (advisor)
This bachelor thesis deals with the design of a single-purpose machine for cutting plant stems. The task of the machine is to cut already partially shortened and stripped wheat straw stalks to the required length. The operation of the machine is fully automated, the operator only ensures the supply of semi-finished products to the machine, removes the finished stalks and controls the operation of the machine. In the thesis is a search describing the existing technologies used for cutting plant stalks, the possibility of driving a single-purpose machine and possible solutions for transporting stalks. The research also includes an analysis of the necessary mechanical and physical properties of wheat stalks. Subsequently, the analysis of information from the research part of the thesis and the definition of important parameters for the design construction balance sheet is performed. In the practical part of the work are developed concepts of possible solutions of individual structural nodes and justification of the choice of individual solutions. The second part of the practical part deals with the construction design of a selected conceptual design, including calculations. The work shows a possible solution for the construction of a machine for processing semi-finished products with a large variety of shapes.
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Digital Processing of Payroll Documents in accordance with German Legislation
Žižka, Jakub ; Kunstová, Renáta (advisor) ; Jakeš, Jiří (referee)
This thesis deals with archiving e-mail communication with attached accounting files in the environment of the German legislation at company ADP Employer Services. It also describes the laws which need to be taken into account and description of the product JobRouter. The aim of the thesis was on a detailed description of all processes related to digital archiving of payroll documents. Another objective was the description of key aspects of the German legislation, which must be taken into account in the system JobRouter. All these aspects had to be taken into account from the perspective from ADP and from the customer perspective. The work is divided into five parts. The first section describes the author's work for ADP and there is further elaborated the structure of work. In the second part is described in detail for ADP environment. The third part deals with all laws, standards and rules that need to be taken into account when the issue of payroll. In the fourth part the detailed analysis JobRouter are discussed in detail. The last part is the boot JobRouter evaluation and taken into account interaction with the law. The benefit of this work is describing the current state of archival documents in payroll for ADP. Also finding and describing all necessary laws to implement the new system JobRouter.
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