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.
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Showing 1 to 13 of 13 for “"scaling functions"”.
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Multidimensional Wavelets and Neural Networks
The construction of scaling functions and wavelets in multiple dimensions and for arbitrary scaling matrices is a challenging task entailing some complexities. Existing approaches mainly focus on the two-dimensional case using dyadic or quincunx sampling. This thesis aims to develop a method to …
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Thermodynamics of 5-flavor QCD
… regions. Another part of this thesis analyzes scaling functions in the 3-d, Z(2), O(2) and O(4) universality classes and their finite size dependence using Monte Carlo simulations of improved ϕ⁴ models. We extract parametrizations of the Z(2) and O(2) scaling functions to high precisions by …
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The chiral phase transition of QCD with 2+1 flavors : a lattice study on Goldstone modes and universal scaling
… behavior of the chiral transition with a scaling analysis based on the O(N) scaling functions. We find strong evidence for 2nd order O(N) scaling in the chiral limit of the light quark mass and with physical strange quark mass. Z(2) scaling is disfavored for finite values of a critical …
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A Comparison of Two Hue Scaling Methods
Hue scaling functions are designed to characterize color appearance by assessing the relative strength of the red vs. green and blue vs. yellow opponent sensations comprising different hues. However, these judgments can be non-intuitive and may pose difficulties for measurement and analysis. We …
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Advancement of A 3D Computational Phantom and Its Age Scaling Methodologies For Retrospective Dose Reconstruction Studies
… (RT). However, our phantom and its age scaling functions (ASF) must be updated so that it can be used in studies that include survivors treated with contemporary RT. We aimed to implement our phantom and its age scaling functions in DICOM format and determine the feasibility of applying …
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Examples and Applications of Infinite Iterated Function Systems
… bi-Lipschitz equivalent. We use the concept of scaling functions to obtain some result about 1-dimensional systems. We discuss particular examples of infinite iterated function systems derived from complex continued fraction expansions with restricted entries. Each system is obtained from an …
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Non-Equilibrium Disordering Processes In binary Systems Due to an Active Agent
… We show that the later stages exhibit dynamic scaling, characterized by a set of exponents and scaling functions. For the random and the biased case, these exponents and scaling functions are computed analytically in excellent agreement with the simulation results. The exponents are remarkably …
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Speciation dynamics of an agent-based evolution model in phenotype space
… near criticality collapse to universal scaling functions with appropriate critical exponents, this case is shown to belong to the directed percolation universality class. Finally, lineage behavior is explored for both organisms and clusters. The lineage lifetimes of the initial …
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Elimination of Edge Effects Using Spline Wavelets Which Maintain a Uniform Two-Scale Relation
… is intended to simplify implementation. Boundary scaling functions with multiple nodes at interval endpoints are rejected, in favor of the classical B-spline scaling function restricted to the interval. This necessitates derivation of revised boundary wavelets. In addition, a direct method of …
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Fractals in mechanics of materials
… on the elastic-plastic transitions. Following scaling analysis in phase transition theory, we recognize three order parameters in terms of stress-strain, fractal dimension, and plastic volume fraction, which, for the first time, are quantitatively related through proposed scaling functions. A …
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Aging processes in complex systems
… out of equilibrium. In the aging or dynamical scaling regime, these systems are best characterized by two-times quantities, like dynamical correlation and response functions, that transform in a specific way under a dynamical scale transformation. The resulting dynamical scaling functions and …
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Pre-equilibrium photon and dilepton production from the early stages of high-energy heavy-ion collisions
… of the spectra, we further derive universal scaling functions for the respective spectra in terms of the specific shear viscosity $\eta/s$ and entropy density $dS/d\eta \sim {\scriptstyle \left(T\tau^{1/3}\right)_\infty^{3/2}}$ (as well as the equilibrium rate $\tilde …
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Scaling of entanglement entropy in some condensed matter systems
The following thesis focuses on the scaling of entanglement entropy in lower dimensions and is divided into three main parts. Chapter 2 studies the thermal reduced density matrices in fermion and spin systems on ladders. Chapter 3 studies the many-body localization phase transition in a …