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 51 for “"scaling relations"”.
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Exploring Strategies to Break Adsorption-Energy Scaling Relations in Catalytic CO Oxidation
… and product selective. However, inherent scaling relations among binding strengths of adsorbates on various catalytic materials often give rise to volcano-shaped relationships between the catalytic activity and the affinity of critical intermediates to the surface. The optimal catalysts …
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The Influence of Physical Processes in Galaxy Clusters on Observable Cluster Scaling Relations
… for astrophysical processes. Cluster scaling relations, which connect their masses and observable properties, provide the link between these two roles. Cosmological constraints derived from cluster abundances often rely on calibrations or functional forms of these relations. On the …
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Studies of the Structure and Evolution of the Intracluster Medium
Finally, we examine how scaling relations evolve with redshift using a 70 cluster sample over the redshift range 0.18 < z < 1.24. We show that X-ray luminosity and ICM mass evolve more slowly toward higher redshifts than is predicted by self-similar models of cluster formation. Effects of core …
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The effect of Adiabatic compression on the fundamental plane of bulges
This project has used scaling relations and the Fundamental Plane to investigate the phenomenon of bulge compression. Bulge compression takes place as disks grow around bulges. When the bulge is compressed the velocity dispersion of the bulge increases, according to the Virial theorem. This project …
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Fundamental Properties of Galaxy Clusters: A Prelude to Large Scale Sunyaev-Zel'dovich Effect/near-Ir Cluster Surveys
… sample that spans a wide range in mass, we study scaling relations between the total galaxy luminosity or number and the cluster binding mass. The origins of such correlations are discussed in terms of a variation of star formation efficiency with cluster mass, various dynamical processes that …
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Multiscale strength homogenization : application to shale nanoindentation
… hardness to develop hardness-packing density scaling relations that allow a separation of constituent properties and volume fraction and morphology parameters, including interface conditions between the porous clay matrix and the (rigid) silt inclusions. The application of this algorithm to 11 …
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Exploring Galaxy Clusters and Groups with Cosmological Simulations
… good agreement with a range of observed X-ray scaling relations. In addition I show that the radial gas profiles of FABLE groups and clusters are a good match to low-redshift observations. Residual deviations in the thermodynamic properties of the cluster core region suggest that more …
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Source studies over a wide range in earthquake magnitude
… (that earthquake source parameters obey scaling relations) and the empirical linear relation between magnitude and the log₁₀ of the number of events (the Gutenberg-Richter relation) describe well the behavior and recurrence of many earthquake data sets. The universality of these relations …
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Numerically modeling the evolution of dust grains in galaxy formation simulations
… to a number of observed low-redshift dust scaling relations and suggest that galactic dust-to-gas ratios can strongly increase with cosmic time. I also present simulations of uniformly sampled cosmological volumes to analyze the behavior of dust statistics on large scales.
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SCALE MODELING OF THE TRANSIENT BEHAVIOR OF HEAT FLUX IN ENCLOSURE FIRES
A new scaling technique based on the hypothesis that flows in a compartment fire are buoyancy driven was introduced by Quintiere [4]. Based on this hypothesis, scaling relations for convective and radiative heat transfer within compartment fires is presented. A technique to measure and …
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Development of electronic structure and kinetics methods for the rational design of electrocatalysts
… Furthermore, our analysis reveals that known ORR scaling relations hold for GCCs, but hint at the possibility of breaking these relations with careful molecular engineering of the GCC active sites.
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Computing and the electrical transport properties of coupled quantum networks
… as a series of papers. The first paper analyzes scaling relations and normal mode charge distributions for such circuits in both isolated and open (terminals attached) form. The second paper compares the flux-qubit nature of quantum networks to the well-established spintronics theory. The results …
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Simulations for the International X-ray Observatory
… a modern cosmological simulation and cluster scaling relations to produce simulated cluster images that are well motivated by theory and observation. A distribution of point sources and various instrumental effects are also included. The simulator is complemented by a source identification …
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Properties of gas and dark matter in X-ray galaxy clusters with Sunyaev Zel'dovich measurements
… from the Chandra archive. I have discussed the scaling properties of the entropy S, the correlation between metallicity Z and S, the profiles of the temperature of the gas, Tgas, and performed a comparison between the dark matter 'temperature' and Tgas in order to constrain the non-gravitational …
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Accelerating Catalytic Materials Discovery for Sustainable Nitrogen Transformations by Interpretable Machine Learning
… electrocatalytic activity due to the *N vs *NO3 scaling relations. It is found that the *N binding energy can be tuned while leaving the *NO3 binding energy unaffected by ensuring that the subsurface atom interacts strongly with the *N. Based on this analysis we suggest the B2 CuPd as a potential …
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Weak lensing flexion as a probe of galaxy cluster substructure
… cluster properties into agreement with known scaling relations. I also present a novel method for measuring weak gravitational lensing flexion to inform mass measurements on small scales. While previously published methods for measuring flexion focus on measuring derived properties of the …
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Equilibration of an atmosphere by geostrophic turbulence
… to properties of the mean flow, and derive scaling relations for both the baroclinicity and vertical stratification of the equilibrated state.
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Mechanistic Simulation of Solvent-aided Gravity Drainage of Bitumen
… capturing the physics of gravity drainage. Scaling relations were developed to describe the rate of oil drainage as a function governing dimensionless groups. For the isothermal gravity drainage, the presence of the solvent (propane) and its molecular diffusion into bitumen was found to play …
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Hydrodynamic, acoustic, and electrical characteristics of underwater spark discharges initiated by different mechanisms
… into the plasma channel. Phenomenological scaling relations were established for these parameters, which allowed for better understanding and prediction of the acoustic performance of underwater spark discharges.;An analytical model, which describes the cavity oscillation, has been …
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Relational correspondence in tone sandhi
… perceptual similarity between correspondent relations between successive elements, or syntagmatic contrast preservation in the auditory domain Fo, as opposed to paradigmatic contrast preservation according to which the well-formedness of an entity is evaluated with reference to the set of …
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