Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 68 for “"Self-Similarity"”.
-
Bayesian estimation of self-similarity exponent
Estimation of the self-similarity exponent has attracted growing interest in recent decades and became a research subject in various fields and disciplines. Real-world data exhibiting self-similar behavior and/or parametrized by self-similarity exponent (in particular Hurst exponent) have been …
-
Emergent Self -Similarity of Cluster Coagulation
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.
-
Self-similarity of Random Aggregation Trees in Hyperbolic Spaces
… develops this general idea in application to the self-similar structure of rooted trees. We use a self-similarity framework based on the Horton-Strahler orders of tree branches and Tokunaga indices that describe aggregation of different orders. The main object of study is the nearest-neighbor …
-
Statistical self-similarity in time series from financial data & chaotic dynamical systems
… this paper, I am going to introduce statistical self-similarity for discrete time series. My thesis is divided into three parts:
-
Assessing self-similarity in redundant complex and quaternion wavelet domains: Theory and applications
Theoretical self-similar processes have been an essential tool for modeling a wide range of real-world signals or images that describe phenomena in engineering, physics, medicine, biology, economics, geology, chemistry, and so on. However, it is often difficult for general modeling methods to …
-
Self-similarity in the conformal framework of quiescent cosmology and the Weyl curvature hypothesis
… by incorporating the spacetime property of self-similarity. A generalisation of the conformal Killing equation is developed as a definition of asymptotic self-similarity for use in the framework; we derive several propositions and theorems that facilitate the application of this definition, …
-
Self-similarity in the conformal framework of quiescent cosmology and the Weyl curvature hypothesis
… by incorporating the spacetime property of self-similarity. A generalisation of the conformal Killing equation is developed as a definition of asymptotic self-similarity for use in the framework; we derive several propositions and theorems that facilitate the application of this definition, …
-
Learning to super-resolve images using self-similarities
… are likely to be found within the given image itself. This recurrence of patches across scales in an image forms the basis of self-similarity driven algorithms for image super-resolution. Self-similarity driven approaches have the appeal that they do not require any external training set; the …
-
Colapso gravitacional de fluido perfeito em espaços-tempos circularmente simétricos com auto-similaridade cinemática
Perfect fluid with kinematic self-similarity is studied in 2 + 1 dimensional spacetimes with circular symmetry and various exact solutions to the Einstein field equations are given. These include all the solutions of dust and stiff perfect fluid with self-similarity of the first kind (homothetic) …
-
A Novel Inpainting Framework for Virtual View Synthesis
… that innovatively exploits depth and textural self-similarity characteristics to construct subjectively enhanced virtual viewpoints. The framework makes three significant contributions to the field: i) the exploitation of view information to jointly inpaint textural and depth hole regions; ii) …
-
Stable and Unstable Shock Formation of the Burgers-Hilbert Equation
… is shock. In many cases the shock has a self-similarity structure. Recently, the modulated self-similarity technique has achieved success in fluid dynamic equations. In this thesis, we apply this technique to establish finite time shock formation of the Burgers-Hilbert equation. The …
-
Morphometric Theory and Application to Evolution and Biogeography in Argopecten (Bivalvai: Pectinidae) From the Southeastern United States
… That speciation mirrors macroevolution suggests self-similarity in evolution. Convergence on circular disk shape (a local maximum of swimming efficiency) seen in numerous pectinid lineages implies adaptative evolution and precludes genetic drift.
-
Measurement of Continuum Breakdown Using a Disc Spin-Down Experiment in Low Pressure Air
… Reynolds number. The non-dimensional curves show self-similarity and therefore continuity in the viscous flow regime. Self-similarity breaks down when the viscous forces are no longer dominant and therefore it is a measure of continuum breakdown. This is also confirmed through the departure of the …
-
FRACTAL BASED FRAMEWORK FOR TIME SERIES VOLATILITY PREDICTION
… Hurst parameter that characterises the degree of self–similarity and persistence in fractional Brownian motion, this work provides a comprehensive framework to account for long–range dependence, self–similarity, and individual risk preferences in market behaviour. Building on the Merton …
-
Quasicrystalline optical lattices for ultracold atoms
… topological properties from higher dimensions, self-similarity, and the presence of non-trivial structure on all scales. The concept of aperiodic order has been extensively studied in mathematics and geometry, exemplified by the celebrated Penrose tiling. However, the understanding of physical …
-
Modified Sierpinski Fractal Antenna
… multi-band solution through the property of self similarity that the fractal shape possess. This thesis deals with some modifications of the original Sierpinski fractal patch antenna, providing additional parameters to optimize in order to get the required radiation characteristics. A …
-
Turbulent wakes in turbulent streams
… the wake’s decay rate and<br/>does not allow self-similarity to occur (unless maybe very far downstream and way beyond<br/>the current measurements reached). Also, the free-stream turbulence was found to be causing<br/>a significant transformation in the turbulence structure inside the wake, …
-
Generalized Volterra-Wiener and surrogate data methods for complex time series analysis
… hypothesis testing, information theory, and self-similarity. We stress mathematical and qualitative relationships between key algorithms in the respective disciplines in addition to describing new robust approaches to solving classically intractable problems. Part I presents a comprehensive …
-
Application of Wavelets to Filtering and Analysis of Self-Similar Signals
… signal increases. Many interesting signals are self-similar, which means that one of their properties is invariant on many different scales. One popular example is strict self-similarity, where an exact copy of a signal is replicated on many scales, but the most common property is statistical …
Page 1 of 4