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 1135 for “"geometrical"”.
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Geometrical analysis of grinding
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1953
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The missing link in as-built 3D modeling: geometrical labeling of segmented point clouds for fitting geometrical surface
… clouds to create continuous surface models. The geometrical labels can also be used to better populate the scene with distinct surface objects based on the segmented subsets. To address current needs, this thesis focused on automatically labeling each segmented point cloud based on their …
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Multidimensional Geometrical Signal Representation: Constructions and Applications
We propose a computational procedure to find all alias-free quantized sampling lattices with minimum sampling density for a given frequency support. Central to this algorithm is a novel condition linking alias-free sampling with the Fourier transform of the indicator function defined on the …
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Temporal hypergraph modeling via inter-geometrical learning
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Geometrical Models for 2D Morphometry in Bioimages
… of pixels composing each object. In contrast, geometrical models representing the contour of objects as continuous parametric curves are free from discretisation artefacts and are therefore excellent alternative candidates for morphometry. The extraction of this kind of contour representation …
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Geometrical probability: applications to urban service systems.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1972. Elec.E.
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Dynamically Corrected Quantum Control: A Geometrical Framework
… of experimental constraints by mapping them into geometrical optimization problems. One such problem we solved is to prove that the fastest possible single-qubit phase gates that are second-order noise-resistant shall be implemented using sign-flipping square functions. Since square waves are not …
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Geometrical Error Analysis and Correction in Robotic Grinding
… this work provides a novel method to define the geometrical error by using the cutting tool as a probe whilst using Acoustic Emission monitoring to modify robot commands and to detect surfaces of the workpiece. The work also includes an applicable mathematical model for compensating machining …
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Innovative Geometrical and Mechanical characterization of metallic components
L'abstract è presente nell'allegato / the abstract is in the attachment
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Geometrical Representation, Processing, and Coding of Visual Information
In the second case, we use a simple model to show that the information rates of the POF are equivalent to the information rates of the scene around it.
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Arithmetical, geometrical, and categorical forays into particle physics
This Thesis will focus on three different forays into particle physics using pure mathematics. Our first foray studies anomaly free gauge algebras. Using geometric methods, we reproduce a solution given to the anomaly cancellation conditions associated with a pure u(1)-gauge theory in Costa et al. …
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Geometrical optimization of arched structures under stochastic loading
This thesis presents a method for determining the moment-optimized shape y(x) for arched structures under unpredictable loading scenarios. A frame geometry optimization derivation is presented that demonstrates the relationship between certain unpredicted loads and an equivalent guaranteed loading …
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Geometrical Optimization of Planar Nano Vacuum Channel Transistors
… each emission model assumed, we uncover unique geometrical features that enhance the performance of devices on figure of merit of interest. This work establishes a free and open-source framework for electronic device optimization. Using this framework, device designers and engineers can spend …
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Controlling Object Heat Release Rate using Geometrical Features
An experimental study was conducted to determine the effect of complex geometries on the burning rate of materials made using additive manufacturing. Controlling heat release rate has applicability in limiting fire hazards as well as for designing fuels for optimal burning rate. The burning rate of …
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Geometrism: How geometrical fundamentalism came to shape our world
… social production of historically particular but geometrically articulated kinds of space, referred to here, following Bachelard (2014), as geometrism, has profound, socio-political and environmental implications. Specifically, this thesis argues that wherever these ideologically naturalized …
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Geometrical formulation and traveltime computation in heterogeneous layered media
… Each cell is assigned a constant velocity. A geometrical approach is presented to construct the Vidale formula (Vidale, 1988) and the linear traveltime interpolation, LTI, formulae (Matsuoka et al., 1990; Asakawa and Kawanaka, 1991; Podvin and Lecomte, 1991; Schneider et al., 1992). The …
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Atom-Based Geometrical Fingerprinting of Conformal Two-Dimensional Materials
<p>The shape of two-dimensional materials plays a significant role on their chemical and physical properties. Two-dimensional materials are basic meshes that are formed by mesh points (vertices) given by atomic positions, and connecting lines (edges) between points given by chemical bonds. …
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Geometrical Analogues of Purine Substrates (5-Methyladenine, Pyrolysis, Diazabiphenylene)
Synthetic approaches are developed to cyclobutadienopurines and lin-benzocyclobutadienopurines, new extended purine analogues, by means of flash vacuum pyrolysis of suitable condensed pyridazine precursors. As a model for the cyclobutadienopurine ring system, …
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