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 7 of 7 for “"Planar Features"”.
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Raman Spectroscopy and Synchrotron X-ray Diffraction Study of Lunar and Terrestrial Plagioclase Feldspar at High-Pressure and High-Temperature Conditions
… about impact cratering process. Shock features in plagioclase from Mistastin Lake impact structure, Canada, and Apollo samples returned from the Moon were investigated. A series of progressive optical shock features were observed, and their Raman spectra was collected systematically. …
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Development of photochemical etching and its application in fabrication of integrated reflector metal semiconductor metal photodetectors
… to use as physical photomasks for producing planar features, photolithography and etching are now being expanded to function with virtual programmable masks and to produce complex non-planar structures. These ""3-D"" structures are of great interest in fields like photonics, microfluidics and …
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An Approach to 3D Building Model Reconstruction from Airborne Laser Scanner Data Using Parameter Space Analysis and Fusion of Primitives
… a parameter space. As buildings are composed of planar features, primitives, triangles representing these features should group in parameter space. A cluster analysis technique is utilised to find and outline these groups/clusters. The clusters found in parameter space represent plane objects in …
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The structure of epithermal deposits of the Coromandel Peninsula : dynamic processes and three-dimensional strain
… deposits. The influence of pre-existing planar features, including columnar jointing, is important, with veins often following their precursors. The main processes which influence vein patterns and shapes are shearing (pre, syn, alternating with and post vein opening), oblique opening …
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Beyond LiDAR for Unmanned Aerial Event-Based Localization in GPS Denied Environments
… a new representation of 3D geospatial data using planar features that efficiently capture the amount of information required for sensor-based GPS navigation in obstacle-rich environments. The results from this dissertation would impact both military and civilian areas of research with the ability …
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Machining accuracy enhancement using machine tool error compensation and metrology
… machining accuracy. The machinability of all planar features is examined by virtually comparing the scanned data with the nominal machining planes, which are also known as virtual gages. The virtual gaging problem is modeled as a constrained linear program. The optimal solution to the problem …
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Void boundaries in the southern sky : aspects of large scale structure in southern galaxy catalogues
… make use of all available redshifts, agree with features evident in controlled surveys (i.e. surveys for which galaxies are selected subject to some sort of observational criterion). In addition, voids are able to "hide" in the cosmic microwave background. Thus even though the largest structures …