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Spatial and temporal scales of atmospheric dynamics
Jajcay, Nikola ; Paluš, Milan (advisor) ; Masoller, Christina (referee) ; Dijkstra, H.A. (referee)
DOCTORAL THESIS Nikola Jajcay Spatial and temporal scales of atmospheric dynamics Abstract Earth climate, in general, varies on many temporal and spatial scales. In particular, climate observables exhibit recurring patterns and quasi- oscillatory phenomena with different periods. Although these oscillations might be weak in amplitude, they might have a non-negligible influence on variability on shorter time-scales due to cross-scale interactions, recently observed by Paluš[1]. This thesis supplies an introductory material for inferring the cross-scale information transfer from observational data, where the time series of interest are obtained using wavelet transform, and possible information transfer is studied using the tools from information theory. Finally, cross- scale interactions are studied in two climate phenomena: air temperature variability in Europe, in which we study phase-amplitude coupling from a slower oscillatory mode with an 8-year period on faster variability and its effects, and El Niño/ Southern Oscillation where we observe a causal chain of phase-phase and phase-amplitude couplings among distinct oscillatory modes. [1] M. Paluš. Multiscale atmospheric dynamics: cross-frequency phase-amplitude coupling in the air temperature. Physical Review Letters, 112(7):078702, 2014.
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Analysis of the impact of subliminal signals and priming effect in information processing
Šafránek, Vojtěch ; Fonferová, Ľudmila (advisor) ; Čadil, Jan (referee)
The work is about possibilities of subliminal influence on the human mind. The first section explains the basic concepts of cognitive psychology, which is related to subliminal perception, threshold of consciousness and sensory threshold, with regard to the theme. In subsequent chapters is explained the operation of subliminal perception, subliminal stimuli are primarily divided into audible and visual. These are followed by a list and description of experiments and examples from practice and everyday life from ancient Greece to the present. The next chapter is about priming and examples of its use. After the principle of subliminal advertising and product placement is described and their place in legislation in the Czech republic; everything is documented by many examples. At the end of the work, the author demurs to the overall situation and tries to evaluate it.
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