Search for dissertations about: "Chaotic"

Showing result 1 - 5 of 102 swedish dissertations containing the word Chaotic.

2. 1. Theory and use of chaotic oscillators in electronic communication systems

   Author : Anders J Johansson; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chaos; complexity theory; random numbers; Chaotic oscillators;

   Abstract : The theory and applications of chaotic oscillators in electronic commuication are investigated. A method of random number generation utilising a chaotic double scroll oscillator is proposed and evaluated. The theoretical limits of the randomness of the method is analysed.. READ MORE

4. 2. Global bifurcations and chaotic dynamics in physical applications

   Author : Martín G. Zimmermann; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; Global bifurcations; Šil´nikov phenomenon; degenerate homoclinic orbit; onset of spatiotemporal chaos; heteroclinic cycles; orientation- and inclination-flip bifurcations; Kvantkemi; Quantum chemistry; Kvantkemi; Quantum Chemistry; kvantkemi;

   Abstract : The aim of this work has been to analyse global bifurcations arising in a laser with injectedsignal and in a catalytic reaction on a surface of Pt, from the point of view of dynamicalsystems theory.The 3-dimensional ordinary differential equation which models the laser was found to contain a homoclinic orbit to a saddle-focus equilibrium, what corresponds to the Šil´nikov phenomenon. READ MORE

5. 3. Error-Correcting Codes Based on Chaotic Dynamical Systems

   Author : Håkan Andersson; Thomas Mittelholzer; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : This dissertation treats a novel class of error-correcting codes based on chaotic dynamical systems. The codes are defined over a continuous alphabet whereas the information that is to be transmitted belongs to a discrete set of symbols. Simple expressions can be given for the encoders, and the codewords can be described by a parity-check relation. READ MORE

6. 4. Propagation of Chaos for Kac-like Particle Systems

   Author : Dawan Mustafa; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Master equations; chaotic densities; kinetic equations; propagation of chaos; Kac model; thermostatted master equation; Boltzmann equation; BGK equation; quenched process; uniform distribution; spectral gap; approximation process; kinetic equations;

   Abstract : This thesis concerns various aspects of the Kac model. The Kac model is a Markov jump process for a particle system where the total kinetic energy of the system is conserved. This particle model is connected to a limiting equation, describing the evolution of a one-particle density, when the numbers of particles tends to infinity. READ MORE

7. 5. Free Ensemble Improvisation

   Author : Harald Stenström; Göteborgs universitet; []
   Keywords : HUMANIORA; HUMANITIES; aleatorics; artistic research; attractor state; central tone; chaotic systems; collective understanding; comprovisation; conceptual model; directed motion; ensemble size; feedback and feedforward; free ensemble improvisation; gesture; importance of rhythm; indeterminacy; interactional skill; listening skill; musical evaluation; musical interaction; musical maturity; musical chemistry; musical interpretation; musical composition; non-idiomatic improvisation; rhythmic flow; sound properties; stylistic influences;

   Abstract : The aim of this doctoral project has been to study so-called non-idiomatic improvisation in ensembles consisting of two or three musicians who play together without any restrictions regarding style or genre and without having predetermined what is to be played or how they should play. The background to this thesis has been the author’s own free improvising, which he has pursued since 1974, and the questions that have arisen whilst music-making. READ MORE