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A car prototype manufacture using modern methods and CAD/CAM
Horák, Aleš ; Zouhar, Jan (referee) ; Sedlák, Josef (advisor)
The project developed under the engineering studies, solves the problem of production of a prototype car using modern technology, reverse engineering and CAD / CAM. Based on the literary study of the issue, was designed process of digitization of the physical model of car, including the treatment and processing of data. Follow-up step was to verify the production of the additive rapid prototyping technology - FDM method. Verification of the results was performed on a vertical milling cantilever FV 25 CNC with control system Heidenhain iTNC 530 using a cutting strategies by PowerMILL CAM software. At the end of the resulting models edit as necessary.
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Comparison of Linux and Windows networking performance
Novotný, Radek ; Burget, Radim (referee) ; Komosný, Dan (advisor)
My Bachelor’s thesis aims to provide a comparison of the performance of servers, i.e. measuring the load of their processors, physical memory, and the whole operating system over network communication using UDP protocol. For this purpose, I developed my own programs. Theoretical part of this work concentrates on the general overview on computer networks and their categorisation according to the ISO OSI and TCP/IP network models. Main differences between network interfaces for both models are provided; the TCP and UDP structures, layers, communication and protocols are explained. The choice was made to measure values for a Linux server with Linux SUSE 10.3 distribution, and a Windows server with Windows server 2003 R2. A program was created so that clients could send data via the UDP protocol on servers. The program is also capable of measuring packet loss which is caused by increased load on the servers from communication itself. It is essential to determine which operating system can eliminate this issue in a better way as this a crucial parameter when selecting a data server. Measurements are comprised in charts comparing load and data loss for a given number of users.
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Atomistické simulace uspořádávání v niklových slitinách pod vlivem mechanického napětí
Buršík, Jiří
Systems containing up to six alloing elements typical of advanced Ni-based superalloys were modelled.their ordering was simulated at atomic level using a Monte Carlo approach with púeriodic boundary conditions and Kawasaki dynamics.molecular dynamics routines were embedded into standard kinetic Ising model to account for relaxing of local atomic positions.Straining computer experiments show that elastic parameters and bulk modulus undergo comparatively large changes at the beginning of ordering process.
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Dispersive optical bistability in unidirectional ring cavity
Šrobár, Fedor
The models of dispersive optical bistability in unidirectional ring cavity yield transmitted intensity as a function of input intensity with additional parameters /mirror reflectivity and phase shift/. There is a feedback element in the description: the dependence of the phase shift on the transmitted power. The region of physically unstable states is marked by the condition specifying that the transmission function of the feedback loop present in the representative causal diagram is greater than 1.
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Design of up-to-date laundry premise model
Marek, Tomáš ; Máša, Vítězslav (referee) ; Pavlas, Martin (advisor)
Scope of this thesis is the design and evaluation of a laundry processing facility. Main goal was to prepare, design and evaluate part of the technological layout for a modern, high-volume laundry processing facility. The focus was on the main apparatuses, main process flow, as well as the supporting process flow, related equipment and key components of field instrumentation with standard description. 3D facility model was prepared on the basis of proposed technological layout, using the SolidWorks software package. This model shows placement of all key equipment and components as well as physical disposition of connection tubing within the building. Final part of work reviews proposed options of process parameters measurement. Such measurements which are important for the evaluation of energy consumption of considered laundry processing. We discuss both pros and cons of evaluated and selected suitable measurement devices, tools and procedures. Constructed 3D model of piping lines shows placing and dimensions of selected measurement devices.
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