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 25 for “"dynamical phenomena"”.
-
Bayesian nonparametric learning of complex dynamical phenomena
The complexity of many dynamical phenomena precludes the use of linear models for which exact analytic techniques are available. However, inference on standard nonlinear models quickly becomes intractable. In some cases, Markov switching processes, with switches between a set of simpler models, are …
-
Optical, electronic, and dynamical phenomena in the shock compression of condensed matter
… details. This thesis explores microscopic phenomena in shock compression of condensed matter including electronic excitations at the shock front, a new dynamical formulation of shock waves that links the microscopic scale to the macroscopic scale, and basic questions regarding the role of …
-
Analysis of performance and robustness of biological switches: local tools for non-local dynamical phenomena.
… Our first contribution is to highlight the dynamical nature of these switches. A biological switch encodes a decision-making process rather than a static binary code. It captures dynamical phenomena that are important for the decision-making process, such as decision latencies and …
-
TIME SERIES RESEARCH IN PSYCHOLOGY: CONCEPTUAL AND METHODOLOGICAL ISSUES
… over the traditional methods in dealing with dynamical phenomena; (2) discuss various possible research applications of time series procedures in psychology; and (3) solve some methodological problems occurring in applied settings. After a brief introduction into time- and frequency-domain …
-
Perturbation studies of excitable media
… gel systems.;This work also focused on two dynamical phenomena in the ruthenium catalyzed Belousov-Zhabotinsky (BZ) reaction. One is self-organized criticality and the other is periodic forcing and how they can be studied with the BZ reaction. Self-organized criticality is the ability of a …
-
Separation Bubbles and Vortex Formation in Cavity Flows
… lead to unusual and interesting basic fluid dynamical phenomena. The flow in a square cavity and in a cylindrical cavity is simulated over a range of Reynolds numbers and the appearance of separation bubbles and vortices have been obtained.</p> <p>A large separation bubble develops in the …
-
NMR von rotatorischer und translatorischer Dynamik
… describes detection methods for different dynamical phenomena. Rotational as well as translational motion is studied using similar theoretical approaches. A new method for the analysis of rotational dynamics is described that allows the computation of angular displacement propagators out of …
-
Single Molecule Force Extension Measurement on Semi-Flexible Biopolymers Using Magnetic Tweezers
… processes. Polymer chains exhibit complex dynamical phenomena in solutions undergoing convective transport, and a proper understanding of chain dynamics is key to optimizing process conditions. The molecular structure of a polymer chain ultimately determines the macroscopic mechanical …
-
Chain dynamical theories of protein folding
… fold rapidly on a funneled landscape. The chain dynamical phenomena relevant to both these extremes are studied in this thesis. First, we derive a mode-coupling theory for the dynamics of a random heteropolymer and study the dynamical glass transition signaled by a violation of the …
-
Fabry-Perot Observations of Midlatitude Neutral Winds and Atmospheric Gravity Wave Activity
… and lower thermosphere displays a wide range of dynamical phenomena resulting in a complex and variable regions. Governed primarily by fluid dynamics, the motion of the upper atmosphere is modulated by a number of atmospheric waves propagating upward from various sources in the lower atmosphere. …
-
Maximum likelihood parameter estimation in time series models using sequential Monte Carlo
… to characterise uncertainty in many real-world dynamical phenomena. A time series model typically contains a static variable, called parameter, which parametrizes the joint law of the random variables involved in the definition of the model. When a time series model is to be fitted to some …
-
Field-driven dynamics of dilute gases, viscous liquids and polymer chains
… concerned with the exploration of field-induced dynamical phenomena arising in dilute gases, viscous liquids and polymer chains. The problems considered herein pertain to the slip-induced motion of a rigid, spherical or nonspherical particle in a fluid in the presence of an inhomogeneous …
-
Complex Fluid Dynamics: From Laminar to Geophysical Flows
… hot springs. Our numerical model predicts dynamical phenomena which are seen at real hot springs. It also produces patterns which have the same static statistical properties as those seen at real hot springs, and indicates that hot spring terraces are indeed scale invariant; we show that …
-
B phase nucleation and A-B interface dynamics in superfluid 3He
… A phase. An overview of the theory of dynamical phenomena in Fermi superfluids is presented in Chapter 1 with an eye towards formulating a theory suitable for studying the dynamics of the first order A-B phase transition. The mechanism for the primary B phase nucleation in the …
-
B phase nucleation and A-B interface dynamics in superfluid helium-3
… A phase. An overview of the theory of dynamical phenomena in Fermi superfluids is presented in Chapter 1 with an eye towards formulating a theory suitable for studying the dynamics of the first order A-B phase transition. The mechanism for the primary B phase nucleation in the …
-
Time-domain terahertz magneto-spectroscopy of semiconductors
… spectroscopy. Many important excitations and dynamical phenomena occur in this range, including superconducting gaps, protein conformational modes, phonons, and plasmons, just to name a few. Spectroscopic studies in this region provide valuable insights into the quantum states and dynamics of …
-
To attract or to oscillate: Validating dynamics with behavior
… in neural systems are best explained through dynamical systems in which behaviorally-relevant variables are represented and manipulated via dynamical phenomena. While a variety of previous works have demonstrated the framework's productivity, there are a number of challenges surrounding its …
-
Symmetry and its Signatures in Quantum Many-Body Dynamics
… This challenge of tracking allowable states and dynamical transitions is only exacerbated for non-equilibrium systems, where one cannot rely on the same notions of typicality. Further, when driven out of equilibrium by external interactions, quantum orders constructed from highly sensitive …
-
BIFURCATION AND CHAOS OF NONLINEAR VIBRO-IMPACT SYSTEMS
… the continuous characteristics as continuous dynamical systems and discrete characteristics introduced by impacts at the same time. Thus, an appropriately developed discrete mapping system is required for such vibro-impact systems in order to simplify investigation on the complexity of …
-
Data-driven system identification of strongly nonlinear modal interactions and model updating of nonlinear dynamical systems
… models of the dynamics of nonlinear dynamical systems; the reason is that, typically, nonlinearities introduce new dynamical phenomena that have no counterparts in linear settings. This dissertation focuses on a recently developed, data-driven nonlinear system identification and …
Page 1 of 2