Search for dissertations about: "stochastic resonance"

Showing result 1 - 5 of 13 swedish dissertations containing the words stochastic resonance.

  1. 1. Stochastic Resonance and Noise-Assisted Signal Transfer : On Coupling Effects of Stochastic Resonators and Spectral Optimization of Fluctuations in Random Network Switches

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Peter Hammerstein; Uppsala universitet.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; stochastic resonance; nonlinear stochastic dynamics; noise and fluctuations; magnetic domains; Teknisk fysik; TECHNOLOGY Engineering physics; TEKNIKVETENSKAP Teknisk fysik;

    Abstract : Recent research shows that noise or random fluctuations must not always be destructive in Nature by degrading system performance. On the contrary, in nonlinear systems they can synchronize systems or enhance the quality of signal transmission. The latter possibility is reported in the thesis. READ MORE

  2. 2. Optimal Detectors for Transient Signal Families and Nonlinear Sensors Derivations and Applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Daniel Asraf; Uppsala universitet.; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; optimal detection; transient signals; noncoherent detection; unknown arrival time; ultrasonic nondestructive testing; nonlinear sensor; stochastic resonance; Signalbehandling; TECHNOLOGY Information technology Signal processing; TEKNIKVETENSKAP Informationsteknik Signalbehandling; Signal Processing; signalbehandling;

    Abstract : This thesis is concerned with detection of transient signal families and detectors in nonlinear static sensor systems. The detection problems are treated within the framework of likelihood ratio based binary hypothesis testing. READ MORE

  3. 3. Noise improves cognitive performance in children with dysfunctional neurotransmission

    University dissertation from Stockholm : Psykologiska institutionen

    Author : Göran Söderlund; Stockholms universitet.; [2007]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ADHD; noise; stochastic resonance; dopamine; episodic memory; model; brain arousal; SPT; cognitive performance; children; SOCIAL SCIENCES Social sciences Psychology; SAMHÄLLSVETENSKAP Socialvetenskap Psykologi; psykologi; Psychology;

    Abstract : Research on children with Attention Deficit Hyperactivity Disorder (ADHD) has shown that they are extremely sensitive to distraction from external stimuli that lead to poor cognitive performance. This thesis shows that cognitive performance can be improved if this external stimulus is smooth and continuous (e.g. auditory white noise). READ MORE

  4. 4. Signals and Noise in Complex Biological Systems

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Johan Rung; Uppsala universitet.; [2007]
    Keywords : Engineering physics; complex systems; computational biology; gene networks; genome-wide; stochastic resonance; microarray; diabetes; association study; transcription regulation; gene expression; Teknisk fysik;

    Abstract : In every living cell, millions of different types of molecules constantly interact and react chemically in a complex system that can adapt to fluctuating environments and extreme conditions, living to survive and reproduce itself. The information required to produce these components is stored in the genome, which is copied in each cell division and transferred and mixed with another genome from parent to child. READ MORE

  5. 5. The Benefits of Noise: Stochastic Resonance and Noise Assisted Signal Transfer

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : P.S. Hammerstein; Uppsala universitet.; [2002]
    Keywords : ;

    Abstract : .... READ MORE