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 17 of 17 for “"3-D modeling"”.
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People objects : 3-D modeling of heads in real-time
Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 1998.
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3-D Modeling of Nearshore Circulation Using ROMS-SWAN: Model Upgrades and Evaluation
<p>Regional Ocean Modeling System (ROMS v 3.0), a three dimensional numerical model, was recently modified for shallow water applications by including wave induced radiation stresses provided through coupling with a wave propagation model (e.g., SWAN, REF/DIF). The coupled model has been applied to …
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3-D Modeling of Ductile Tearing Using Finite Elements: Computational Aspects and Techniques
To provide a computational framework suitable for the solution of these problems, this work also describes the parallel implementation of a nonlinear, implicit finite element code. The implementation employs an explicit message-passing approach using the MPI standard to maintain portability, a …
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Outcrop-based 3-D modeling of the Tensleep sandstone at Alkali Creek, Bighorn Basin, Wyoming
Includes bibliographical references.
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3-D modeling of shallow-water carbonate systems : a scale-dependent approach based on quantitative outcrop studies
The study of outcrop modeling is located at the interface between two fields of expertise, Sedimentology and Computing Geoscience, which respectively investigates and simulates geological heterogeneity observed in the sedimentary record. During the last past years, modeling tools and techniques …
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An application of 3-D modeling and optimization of the final pit limits for a lignite deposit
… Underground™, an integrated geostatistical modeling package. The largest possible utilization of the original geologic information was intended, and the modeling results were correlated with existing reserves calculations and past geologic observations on quality characteristics. A flexible …
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An Analysis and Critique of DEM Creaion and 3-D Modeling Using Airborne LIDAR and Photogrammetric Techniques
… and much more. Within the scope of terrain modeling lie a wide variety of techniques used to build digital elevation models (DEMs). Each approach has inherent problems and difficulties that can alter the accuracy and usability of the DEM produced. The main objectives of this study are to …
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Pose imagery and automated three-dimensional modeling of urban environments
Three-dimensional (3-D) modeling of urban environments has numerous applications, including virtual environments, urban planning, and physical simulation. Constructing 3-D models from photographs (images) is thus an important area of research in computer vision, and increasingly, computer …
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Analyzing FLUENT CFD models and data to develop fundamental codes to assess the effects of graphite oxidation in an HTGR air ingress accident
… longer computational time required for the 3-D modeling. This model was also created in an effort to compare the results of the previous models using porous media assumptions versus explicitly modeled geometry. Finally, the 2-D model showed valuable steady state results in a much shorter time …
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Super High-speed Miniaturized Permanent Magnet Synchronous Motor
… concept of electrical machines. After that, the modeling of PMSM for dynamic simulation is provided. Particular design strategies have to be adopted for super-high speed applications since motor losses assume a key role in the motor drive performance limit. The considerations of the PMSM …
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PERCEPTION & ROLE OF 3-D VISUALIZATIONS IN PLANNING: A CASE STUDY OF THE NORTHWEST PASSAGE SCENIC BYWAY'S VIEWSHED PROTECTION & VISUALIZATION PROJECT
… tools and methods, in particular 3-D modeling, has seen a considerable rise in planning throughout the last decade due to continued advancements in 3-D technology, computer hardware, and the internet. The rapid increase in the use of 3-D visualization is supported by the belief that …
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PERCEPTION & ROLE OF 3-D VISUALIZATIONS IN PLANNING: A CASE STUDY OF THE NORTHWEST PASSAGE SCENIC BYWAY'S VIEWSHED PROTECTION & VISUALIZATION PROJECT
… tools and methods, in particular 3-D modeling, has seen a considerable rise in planning throughout the last decade due to continued advancements in 3-D technology, computer hardware, and the internet. The rapid increase in the use of 3-D visualization is supported by the belief that …
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A 3-D Model of the Auroral Ionosphere
<p>A new 3-D model of the high latitude ionosphere is developed to study the coupling of the ionosphere with the magnetosphere and neutral atmosphere. The model consists of equations describing conservations of mass, momentum and energy for the six ionospheric constituents (O+, NO+, N+2 , O+2 , N+ …
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Three-dimensional numerical analysis of reflective cracks in airfield pavements
… 3-D models are required. The need for true 3-D modeling of reflective cracking complicates the development of computational models using standard finite element methods. Furthermore, the nature of the linear viscoelastic material (asphalt) makes the crack analysis time dependent. The Generalized …
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Miniaturization of on-chip passive electronic devices by silicon nitride self-rolled-up membrane microtube nanotechnology
… of S-RuM lumped passive devices by physical modeling. The design of the S-RuM inductor from FEM structural simulation to physical model electrical simulation is demonstrated, and its physical model is further integrated into the commercial Advanced Design System (ADS) software as a design kit …
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Numerical investigations of flow behavior and energy losses in open channel junctions
… and other flow diversion problems. The numerical modeling strategies and findings can further facilitate the modifications of conventional 1D models and to realize full coupled 1-D and 3-D modeling for a complex open channel system.