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 “"scaling relationship"”.
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Grain size evolution and strain localization in deformed marbles
… with field based observations. In Chapter 2, a scaling relationship for recrystallized grain size is derived based on a balance between the rate that mechanical work is done during deformation and the rate that this energy can be dissipated. This suggests that recrystallized grain size reflects …
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Genome Variation Across Cancers Scales With Tissue Stiffness--An Invasion-Mutation Mechanism
… in soft tissues, like marrow and brain. This scaling relationship suggests a possible mechanical source of cancerous mutations. We hypothesize that when cancer cells squeeze through small holes in stiff fibrous tissues during tumorigenic invasion, they sustain nuclear stress, leading to DNA …
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Wheel design optimization for locomotion in granular beds using resistive force theory
… analysis was performed to find a global scaling relationship for the RFT wheel designs. Scaling laws for the power and velocity were found that allow different wheel designs and conditions to be simulated with an entirely new system. Using the simulation, it was found that the scaling law …
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Energy Conversion Materials: Computational Design of Electrocatalysts Toward Sustainable Energy Applications
… key reaction intermediates with a focus on the scaling relationship. Unlike Cu-based catalysts, we observe breaking of the linear scaling relationship for TMDCs, offering lower over-potentials and high selectivity. Fabrication of the reconstructed edges were explored using a controlled atomic …
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Continuos Doping of La2CuO4+x Thin Films
… depth of these samples and find that Homes scaling, lambda^-2 ~ sigma*Tc, is obeyed, consistent with these materials being in the dirty limit. This result is independent of the precise mechanism for the gating process as all of the parameters of the scaling relationship are determined by …
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Deriving and verifying a general granular locomotion scaling law
… locomotion system. A granular locomotion scaling law was developed, which instructs how to scale size, mass, and driving parameters in order to relate dynamic behaviors of different locomotors in the same granular media. For the development of this scaling relationship, a general wheel …
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Deformation and residual stresses at the intragranular scale – a study using high energy x-ray diffraction and modeling in polycrystalline alloys
… in Ti-7Al. In particular cases, a power-law type scaling relationship was established between the size and the probability distribution of the plasticity events. A mesoscale field dislocation mechanics based crystal-plasticity model was employed to demonstrate slip system activity consistent with …
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The low frequency array and the transient and variable radio sky
… Through this work the previously established scaling relationship between core radio and X-ray luminosities and black hole mass, known as the ‘fundamental plane of black hole activity’ is also explored with respect to NGC 7213. Secondly, the technical and algorithmic procedures to search for …
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Probabilistic source-to-sink analysis of the provenance of the California paleoriver: implications for the early Eocene paleogeography of western North America
… and consider the effects this has on scaling discharge to the paleo-catchment area of the system. We develop new scaling relationships between discharge and catchment area using daily gauging data from 415 rivers worldwide. Previous studies using a global database of rivers use average …
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Swimming in four goldfish (Carassius auratus) morphotypes: understanding functional design and performance through artificial selection
… kg-1 m-1) is accurately predicted from the mass scaling relationship for fish (P > 0.05), but values for the fantail and eggfish (≈ 1.3 mg O2 kg-1 m-1) are not (P < 0.05). Eggfish steady swimming (dorsal fin absent) was characterized by rolling and yawing motions associated with significant …
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Oil transport inside the oil control ring grove and its interaction with surrounding areas in internal combustion engines
… OCR. In carrying out this analysis, a gross scaling relationship was created, utilizing the obtained LIF videos as a connection between the scaling model and the experiments' results. Mechanisms were classified into three types of oil transport: supply, release, and leakage. The primary …
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Nurture is Nature: The Molecular Basis of Caregiver Genotype Effects on Larval Growth and Caste Development in the Clonal Raider Ant
… in social partners, but do not establish causal relationships. Thus, our understanding of the molecular mechanisms underlying IGEs, including those between caregivers and their young, is limited. As a result, it is unknown whether common molecular factors or general rules underlie IGEs across …
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Hillslope erosion and weathering rates in Earth's most rapidly uplifting mountains
… 4,231 landslides. I use the geometry to develop scaling relationships that can be used to predict landslide volume from more readily available landslide area information. A key finding is that landslide scaling is controlled by hillslope material; soil landslides have lower depths and hence lower …
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The Flow Dynamics and Buttressing of Ice Shelves
… I find good agreement between a theoretical scaling relationship for ice flow at the ice-shelf calving front and data from Antarctic ice shelves. I proceed to develop an idealized mathematical model of an ice shelf confined to flow in a channel. By assuming shear-dominated dynamics within the …
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The physical, environmental, and evolutionary determinants of biological architecture
The relationship between structure and function is a longstanding and central topic in biology, evolution, and ecology. The importance of morphology is clearly visible in the diverse forms taken by innumerable organisms in order to perform a myriad of functions. Examining the great variety of …
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Experimental and Theoretical Studies of Friction and Adhesion of Elastomeric Materials
… Several nondimensional parameters and a scaling law are derived to characterize different interaction regimes between the beams and granular support. The findings from this work is believed to be helpful for improved understanding of interactions between elastic beams and surrounding …
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Evolutionary and proximate constraints on egg size in butterflies
… contrast to the general assumption of a positive scaling relationship between both traits. This is one of the few studies addressing the issue of evolutionary constraints directly, employing artificial two-trait selection which has been proven to be a powerful tool to unravel genetic variances and …
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Differences between adult and pediatric neck muscle stress due muscle recruitment patterns
… This difference calls into question not only the relationship that was used to develop the child crash test dummies but also the ability of these crash dummies to predict child injuries due to automobile impact.</p> <p> <strong>METHODS</strong> </p> <p>The aim of this study was to determine if the …
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Electronic properties of topological semimetal candidates ACd$_2$Pn$_2$ (A = Eu, Sr; Pn = As, Sb)
… the charge neutrality point. In contrast, the scaling relationship between AHC and longitudinal conductivity aligns with the characteristics of variable-range hopping insulators. Our results suggest that EuCd$_2$As$_2$ is a magnetic semiconductor rather than a topological Weyl semimetal. There …
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The initiation and evolution of ignimbrite faults, Gran Canaria, Spain
… the widely accepted fault thickness-displacement scaling relationship. I suggest that the architecture of dilational faults can be predicted by examining the host rock properties and using the data from this study have developed a framework that illustrates how ignimbrite host rock properties may …