Sökning: "Bifurcation theory"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Bifurcation theory.

1. 1. Gravity water waves over constant vorticity flows: from laminar flows to touching waves

   Master-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

   Författare :Francisco Gonçalves Jorge Dias de Carvalho; [2023]
   Nyckelord :Partial differential equations; Water waves; Euler equations; Free boundary problem; Bifurcation theory; Nonlinear functional analysis; Hilbert transform; Mathematics and Statistics;

   Sammanfattning : In a recent paper, Hur and Wheeler proved the existence of periodic steady water waves over an infinitely deep, two-dimensional and constant vorticity flow and subject to gravity whose profile overhangs, among which, waves whose surface touches at a point, enclosing a bubble of air. We take this further, proving the existence of a continuous curve of water waves from a laminar flow up to a touching wave for fixed non-zero gravity. LÄS MER

3. 2. Numerical Solutions and Parameter Sensitivity of the Lorenz System

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Eira Larsson; Vilmer Ström; [2023]
   Nyckelord :Lorenz system; Dynamic Bifurcation; Periodic Parameter Perturbation; Chaos; Runge-Kutta; Shadowing Lemma;

   Sammanfattning : In chaos theory there are many different problems still unsolved. One of which is the optimization of infinite time average functionals on manifolds. To try one of the different tools to solve this problem we want to find stable manifolds in chaotic dynamical systems. LÄS MER

4. 3. Un estudio diacrónico del desarrollo del feminismo a partir de la representación femenina y masculina en la literatura peruana contemporánea

   Master-uppsats, Stockholms universitet/Romanska och klassiska institutionen

   Författare :Inger Magnusson; [2021]
   Nyckelord :feminismo; patriarcal; feminidad y masculinidad; identidad; literatura peruana contemporánea;

   Sammanfattning : Este estudio comparativo pretende examinar la representación femenina y masculina en la literatura moderna y contemporánea peruana. El propósito de nuestro trabajo es enfocar las fuerzas y las debilidades de la mujer y del hombre a la luz de los movimientos feministas desde una perspectiva diacrónica en el desarrollo de feminismo durante el siglo XX. LÄS MER

5. 4. Feigenbaum Scaling

   Kandidat-uppsats, Linnéuniversitetet/Institutionen för matematik (MA)

   Författare :Janek Sendrowski; [2020]
   Nyckelord :Feigenbaum; Feigenbaum constant; Feigenbaum point; superstable; self-similarity; fractals; final-state diagram; logistic map; period-doubling operator; linearized period-doubling operator; Cantor set; Sharkovsky sequence; Chebyshev interpolation; stable manifold; unstable manifold; orbits; fixed points; scaling factor; pitchfork bifurcation; cobweb plot; renormalization; iterates; one-hump map; unimodal map; bifurcation cascade; Feigenbaum universality; chaos theory; spectrum; generalized Feigenvalues; bifurcation points; superstable points; fixed function; universal function; eigenvalues; eigenvectors; eigenfunctions; universality conditions; Schwarzian derivative; Newton’s method; power method; Arnoldi’s method; attractive fixed point; repellent fixed point; Banach fixed-point theorem; collocation method; functional analysis; topology;

   Sammanfattning : In this thesis I hope to provide a clear and concise introduction to Feigenbaum scaling accessible to undergraduate students. This is accompanied by a description of how to obtain numerical results by various means. LÄS MER

7. 5. Analysis of an Attractor Neural Network Model for Working Memory: A Control Theory Approach

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Gianluca Villani; [2019]
   Nyckelord :;

   Sammanfattning : Working Memory (WM) is a general-purpose cognitive system responsible for temporaryholding information in service of higher order cognition systems, e.g. decision making. LÄS MER