|
|
Verification of nonlinear material models
Prokš, Tomáš ; Němec, Ivan (referee) ; Hradil, Petr (advisor)
The bachelor thesis deals with verification of nonlinear material model of soil FHWA SOIL during shear test. The nonlinear problem was being solved by software LS-DYNA using explicit formulation of finite elements method. The values of horizontal displacements during the direct shear test were compared with the results listed by the developer of the material. The considerable difference in the results led to focusing on the settings of the material model and influence of application of load, geometry and type of finite elements on the monitoring values.
|
|
|
Non-linear character of optical environment
Žáček, Martin ; Míča, Ivan (referee) ; Přinosil, Jiří (advisor)
This paper describes theoretical and application options of nonlinear effects in optical medium. Optical medium means fiber optics, because the fiber is the most employed optical medium at these days. Basic statements of this work are theoretical information with mathematical and physical expressions. These expressions defines nonlinear medium and effects which are founded here. These effects are split to second and third orders. Nonlinear effects of second orders are Second-harmonic Generation, Three-wave Mixing process. Nonlinear effects third orders are Third-harmonic Generation, Self-phase Modulation, Cross-phase Modulation, Four-wave Mixing and Degenerative Four-wave Mixing process. These effects are extended by scattering effects – Brillouin’s and Raman‘s Scattering. The next point discuss about optical communication system DWDM. DWDM uses dense wavelength multiplexing. Nonlinear effects have a few negative influences on these systems. There are requests for high bandwidth and communication speed. FWM and XPM limit these requests. They can invoke cross-talks. We support theoretical information with application examples and simulations at the end of this work. We use OptSim v.4.0 program. We are simulate FWM and XPM effect in depend on chromatical dispersion and power.
|
|
|
APPLICATION OF NONLINEAR EDITING METHODS IN TELEVISION NEWSCAST
Bančanský, Andrej ; Lokšík, Martin (advisor) ; Šmíd, Milan (referee)
This work studies the influence that non-linear editing of visual materials and usage of digital news production system have on the final form of news programmes. I also compare these advanced technologies with the older linear editing and analog playout, illustrate it by describing the principles of both methods and explain it on a hypothetical example. Two chapters are devoted to the integration of digital archives and graphics tools. The examined period used for comparison of new and old technologies is the week from 2 to 8 April in 2010 and the same week a decade earlier. The news programme examined is Udalosti on Czech television. The aim is to point out how the technical possibilities can change the workflow and form of newscast, not just in theory but also practically.
|
|
|
APPLICATION OF NONLINEAR EDITING METHODS IN TELEVISION NEWSCAST
Bančanský, Andrej ; Lokšík, Martin (advisor) ; Šmíd, Milan (referee)
This work studies the influence that non-linear editing of visual materials and usage of digital news production system have on the final form of news programmes. I also compare these advanced technologies with the older linear editing and analog playout, illustrate it by describing the principles of both methods and explain it on a hypothetical example. Two chapters are devoted to the integration of digital archives and graphics tools. The examined period used for comparison of new and old technologies is the week from 2 to 8 April in 2010 and the same week a decade earlier. The news programme examined is Udalosti on Czech television. The aim is to point out how the technical possibilities can change the workflow and form of newscast, not just in theory but also practically.
|
|
|
Chaos
Vogelová, Tereza ; Fajnor, Richard (referee) ; Stratil, Václav (advisor)
The existing world is becoming more disrupted and is falling apart. For its resurrection and restoration, a new way of thinking is necessary. This new type of thinking is needed to be able to open up its mind and to think about the process of thinking itself; it must understand what is happening in other systems, where processes seem to be taking place by themselves without any other visible interference. First Chaos is the title for an intermedia installation which contains 90 black and white photographs, both digital and analogue, all of which were taken between the years 2008 and 2012. Together, the photographs create one coherent piece – a kind of sculpture. They can evoke a "still film" with a non-linear, cyclical storyline, whilst the images can simultaneously function individually, without any connection to other photographs.
|
|
|
Non-linear character of optical environment
Žáček, Martin ; Míča, Ivan (referee) ; Přinosil, Jiří (advisor)
This paper describes theoretical and application options of nonlinear effects in optical medium. Optical medium means fiber optics, because the fiber is the most employed optical medium at these days. Basic statements of this work are theoretical information with mathematical and physical expressions. These expressions defines nonlinear medium and effects which are founded here. These effects are split to second and third orders. Nonlinear effects of second orders are Second-harmonic Generation, Three-wave Mixing process. Nonlinear effects third orders are Third-harmonic Generation, Self-phase Modulation, Cross-phase Modulation, Four-wave Mixing and Degenerative Four-wave Mixing process. These effects are extended by scattering effects – Brillouin’s and Raman‘s Scattering. The next point discuss about optical communication system DWDM. DWDM uses dense wavelength multiplexing. Nonlinear effects have a few negative influences on these systems. There are requests for high bandwidth and communication speed. FWM and XPM limit these requests. They can invoke cross-talks. We support theoretical information with application examples and simulations at the end of this work. We use OptSim v.4.0 program. We are simulate FWM and XPM effect in depend on chromatical dispersion and power.
|
|
|
Verification of nonlinear material models
Prokš, Tomáš ; Němec, Ivan (referee) ; Hradil, Petr (advisor)
The bachelor thesis deals with verification of nonlinear material model of soil FHWA SOIL during shear test. The nonlinear problem was being solved by software LS-DYNA using explicit formulation of finite elements method. The values of horizontal displacements during the direct shear test were compared with the results listed by the developer of the material. The considerable difference in the results led to focusing on the settings of the material model and influence of application of load, geometry and type of finite elements on the monitoring values.
|
guest ::
