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 20 of 20 for “"Turbulence Theory"”.
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Weakly inhomogeneous turbulence theory with applications to geophysical flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1982.
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Transition into Marriage: A Test of the Relational Turbulence Theory
… cohabitation, relational uncertainty variables, turbulence, construal levels, and dyadic synchrony among participants who have been married for one year or less. Research questions were posed to explore the relationships between cohabitation, relational uncertainty, and turbulence. Additionally, …
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The interaction of shock waves and dispersive waves
… mimics the Zakharov equations from weak plasma turbulence theory but replaces the linear wave equation in that system by a nonlinear equation allowing shock formation. This nonlinear equation is a hyperbolic conservation law forced by the dispersive wave.
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Direct and inverse turbulent cascades in a 2D Bose gas
… and (iii) the theoretical background for wave turbulence in Bose gases. We then turn to our experimental work; all of which begins with a quasi-pure 39K condensate, strongly confined along one direction to realise a 2D system and trapped in a uniform in-plane potential. The first study is of …
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Contributions in fractional diffusive limit and wave turbulence in kinetic theory
… we consider the equations coming from weak wave turbulence theory and we study them via mean-field limits of finite stochastic particle systems. $\textbf{Anomalous transport from kinetic models.}$ The goal is to understand how fractional diffusion arises from kinetic equations. We explain how …
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The Impact of Prior Communication About Organizational Turbulence On Members’ Perceptions During Institutional Change
… and to whom accurate levels organizational turbulence might not have been fully communicated prior to significant institutional change. Communicating levels of organizational turbulence is an important factor, and it is a necessary first step in transformational change. Members’ prior …
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Supporting Educator Professional Growth In Times Of Change
… of turbulent change as suggested by Gross’ turbulence theory. In the interviews, teachers shared a desire for professional development which was authentic and mutually supported through the reflection of their peers. The implications of this study are that professional development providers …
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Wave-particle interactions in the solar wind and solar flares
… wind and solar flares. The dynamics of plasma turbulence in these settings controls the strength of the interactions, by determining the amplitudes of the small-scale electromagnetic fluctuations that have the largest effect on the particles. Because turbulence and wave-particle interactions …
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Filter-based multiscale entropy analysis of complex physiological time series
… its complexity. Motivated by the heart rate turbulence theory which suggests that the human heartbeat interval time series (HHITS) can be described in piecewise linear patterns, we propose the piecewise linear filter multiscale entropy (PLFME) for the complexity analysis of the time series. …
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HOW PRINCIPALS LEAD IN AN ERA OF TESTING AND ACCOUNTABILITY: A QUALITATIVE STUDY OF THE PERCEPTIONS OF PRINCIPALS LEADING SCHOOLS ON THE CONTINUUM OF NO CHILD LEFT BEHIND SANCTIONS
… terms of the study's two theoretical frameworks: Turbulence Theory (Gross, 1998) and Multiple Ethical Paradigm.
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Measuring Optical Turbulence Parameters With A Three-aperture Receiver
… several atmospheric parameters related to turbulence. Techniques used by two different scintillometers based on weak turbulence theory are discussed along with a method to estimate the inner scale developed by Hill. The theory and minimization algorithm used to infer the atmospheric …
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Adapting to the new normal: The process of relational change after stroke within romantic dyads
… concepts from the uncertainty in illness theory (Mishel, 1988), the uncertainty management theory (Brashers, 2001), and relational turbulence theory (Solomon, Knobloch, Theiss, & McLaren, 2016) to investigate how couples navigated the illness trajectory after a stroke. I focused …
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The hydrodynamic behaviour and mass transfer characteristics of single droplets in a pulsed sieve plate column
… (Eo)crit A correlation based on the isotropic turbulence theory was developed to calculate droplet diameter in the emulsion regime.vskip 1.0cm Experimental results show that in the mixer-settler and transitional regimes, pulsing parameters had little effect on the overall dispersed phase mass …
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Stabilization of POD-ROMs
… based on ideas from large eddy simulation and turbulence theory: the Leray ROM (L-ROM) and the evolve-then-filter ROM (EF-ROM). Both Reg-ROMs use explicit POD spatial filtering to regularize (smooth) some of the terms in the standard G-ROM. I propose two different POD spatial filters: one based …
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No Principal Left Behind: Leadership and Ethical Dilemmas in the Turbulent Era of School Accountability
… terms of the study's two theoretical frameworks: Turbulence Theory (Gross, 1998) and Multiple Ethical Paradigms (Shapiro and Stefkovich, 2001). The data revealed three dominant themes: (a) Turbulence Happens: School Leaders Are Forced to Respond to Externally Imposed Accountability in the Era of …
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Structure and Turbulence of the Three-Dimensional Boundary Layer Flow over a Hill
… in most engineering applications, but most turbulence models used to simulate these flows are built on two-dimensional turbulence theory, limiting the accuracy of simulation results. To improve the accuracy of turbulence modeling capabilities, a better understanding of 3DTBL physics is …
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Understanding of weak turbulence of capillary waves
First developed by Zakharov, Weak Turbulence Theory (WTT) aims at describing the steady-state statistical property of an ensemble of waves in weakly nonlinear interactions. In the wavenumber k domain, the WTT steady-state analytical solution yields a power-law inertial-range spectrum I - ka, with a …
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Administrative Organizational Structures: Turbulence and Stability in Public Schools
This quantitative study analyzed the relationship between district characteristics, the educational environment and the administrative organizational structure in public schools in the Commonwealth of Pennsylvania between the 1996-1997 school year and the 2006-2007. More specifically, this study …
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Gravity Wave and Turbulence Transport in the Mesopause Region
… transport due to dissipating gravity waves and turbulence in the mesopause region (85-100 km) are analyzed with observational data obtained from a narrow-band sodium wind/temperature lidar located at Andes Lidar Observatory (ALO), Cerro Pach´on (30.25 S, 70.73 W), Chile. The Na lidar at ALO has …