Spatiotemporal pattern formation in neuronal networks depends on the interplay between cellular and network synchronization properties. The neuronal phase response curve (PRC) is an experimentally obtainable measure that characterizes the cellular response to small perturbations, and can serve as an indicator of cellular propensity for synchronization. Two broad classes of PRCs have been identi...

Title of Document: NATURAL VARIATION IN BIOLOGICAL AND SIMULATED CENTRAL PATTERN GENERATORS David L Boothe, Doctor of Philosophy, 2007 Directed By: Professor Avis H. Cohen, Department of Biology Here we analyze natural variability within two types of systems. 1, The output of the biological spinal central pattern generator for locomotion in the cat, and 2, Sets of stochastic neural networks giv...

 In this work, time domain analysis is used to solve Adler’s equation in order to obtain the required time, for an oscillator under external injection, reaching the steady-state condition. Mathematical approach has been applied to fully describe the transient of frequency acquisition in injection-locked LC and Ring oscillators considering their time-varying nature. Then, the analysis is verifie...

Star formation in the inner few hundred pc of the Galactic bulge occurs in a flattened molecular layer called the central molecular zone (CMZ). Serabyn & Morris (1996) suggest that the star formation in the CMZ has been sustained for the lifetime of the Galaxy, and that the resulting agglomeration of stars formed in the CMZ has resulted in the prominent r−2 stellar density cusp at the Galactic ...

We consider the problem of state and parameter estimation for a class of nonlinear oscillators defined as a system of coupled nonlinear ordinary differential equations. Observable variables are limited to a few components of state vector and an input signal. This class of systems describes a set of canonic models governing the dynamics of evoked potential in neural membranes, including Hodgkin-...

Decoherence, Control, and Symmetry in Quantum Computers

Experienced end-users are more likely to leverage the flexibility embedded within an information system. System flexibility influences ease-of-use perceptions, which influence user perceptions of system usefulness. Because men tend to have more experience with information systems and possess less computer anxiety than women, the strength of the relationship between user perceptions of system fl...