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 53 for “"Tessellation"”.
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Pattern synthesis and perturbation in tessellation automata
… to cellular automata, the formal notion of tessellation automata is advanced and a cellular computer using them is described. Potentially, this computer has the ability to do self-diagnosis and self-reconfiguration for internal faults without external assistance. Next, computational …
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Computational Exploration of Origami Tessellation Design:Harnessing Shape Grammar for Flexible Folding Structures
Origami tessellation, with its intricate folding patterns, presents a unique blend of artistic expression and engineering application. However, the design process often proves daunting due to its complexity, limiting accessibility to enthusiasts and impeding its potential impact in engineering and …
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Developing a triangular tessellation method for the analysis of medium ring pucker conformations
… coordinates based on the method of triangular tessellation. The triangular tessellation definition for monocylic 6-membered rings is first extended to 7- and 8-membered rings, and the corresponding puckering coordinates are derived mathematically. The macrocyclic CD rings are then simplified to …
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Unstructured surface and volume decimation of tessellated domains
… the initial topology and boundary geometry. The tessellation at each step of the algorithm is preserved and, in the pathological case, every interior vertex is a candidate for removal. The research focuses on how to remove a vertex from an existing unstructured n-dimensional tessellation, not on …
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Construction of Centroidal Voronoi Tessellations Using A Conjugate Gradient Method Based On Trust Regions
<p>A Voronoi tessellation whose generating points coincide with the centroids (mass centers) of the corresponding Voronoi regions is called a centroidal Voronoi tessellation (CVT). Due to the natural optimization properties enjoyed by CVTs, they have diverse applications in many areas of science …
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Over-Relaxation Lloyd Method For Computing Centroidal Voronoi Tessellations
<p>Centrodial Voronoi tessellation (CVT) is a Voronoi tessellation of a region whose generating points are also the mass centroids of the corresponding Voronoi regions. Centrodial Voronoi tessellations have diverse applications in many areas of science and engineering. In this paper, we study …
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Mesh generation using a correspondence distance field
… detected adaptively and used to make Delaunay tessellation. Tessellation of regions with holes is performed using ghost nodes. Images of meshed for each method are given for a sample set of test cases. Possible extensions, future work, and CFD applications are also discussed.
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Finite element analysis of periodic shells and origami tessellations
… unit cell-based simulations. Three origami tessellations were simulated by the solver: the Smooth "Eggbox, Rigid "Eggbox", and "Cosine Zigzag" patterns. The solver calculated in-plane and out-of-plane Poisson's ratios for each tessellation, matching up with previously observed or theoretical …
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Real-time rendering and simulation of trees and snow
… to the model dynamically using the GPU enhanced tessellation engine. A real-time snow accumulation system is developed to generate snow cover on a dynamic, animated scene. Occlusion techniques are used to project snow accumulating faces and map exposed areas to applied accumulation maps in the …
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Detecting domestic objects with ensembles of view-tuned support vector machine cascades trained on Web images
… and view-specific, data-tuned hierarchical tessellations of the 2D image plane. The 2D tessellations are used along with a class-independent data-tuned hierarchical tessellation of a high-dimensional descriptor space to realize a view-tuned approximate partial matching kernel. A view-tuned …
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Discrete modelling of heat transfer
… by the Delaunay triangulation and the Voronoi tessellation. The objective of the present work is to investigate in more detail this type of lattice model for heat transfer. In the lattice models studied here the domain to be analysed is discretised by a network of discrete lattice elements. The …
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Tesselações em grafos e suas aplicações em computação quântica
… Staggered model introduced the concept of graph tessellations, which is important for the definition of the unitary evolution operators. Portugal also proved that all 2-tessellable graphs have a 2-colorable clique graph. It is not possible to state that a graph whose the minimum cover by …
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A Geometry-Based Motion Planner for Direct Machining and Control
… operates directly off path geometry without pre-tessellation. The motion planner is developed with the intent to process Bezier curves. The motion planning module includes a deterministic predictor-corrector-type curve interpolator, a dynamics limiting module, and a two-pass jerk-limited speed …
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Test scheduling and configuration in a self-repairing computer
The structure of cellular arrays and Tessellation Automata are introduced as a "fabric" for use in the implementation of self-testing and self-repairing computational configurations. Testing schemes are suggested for use in the "self-testing" operation of this computer system. Sequentially …
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Multidimensional Adaptive Quadrature Over Simplices
… points) in successive refinements of the initial tessellation. While theory is developed for smooth functions, this algorithm is well suited for functions with discontinuities in dimensions three through six. Other advantages of this approach include straight-forward parallel implementation and …
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Estimating Atlantic Basin Tropical Cyclone Landfall Probability for the United States
… the basin ultimately strike the United States. A tessellation of 3,375 hexagons are systematically evaluated and eventual landfall probabilities are calculated for all storms passing through each hexagon. Probabilities are calculated and mapped for each of twelve states and regions from Texas to …
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Delaunay-Laguerre Geometry For Macromolecular Modeling And Implicit Solvation
… consist of the intersection of the Laguerre tessellation and space-filling diagram. This method eliminates the need for explicit water molecules to cap infinite Laguerre cells of certain solvent accessible solute atoms. We discuss and implement a quick weighted Delaunay tetrahedrization …
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An enhance framework on hair modeling and real-time animation
… strip is warped into U-shape for rendering after tessellation. Alpha and texture mappings are then applied to the polygon meshes of the U-shape. Note that the U-shape is not explicitly stored in the data structure. Because of the U-shape technique, we also adapt the collision detection and …
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THE LOW-INTENSITY LIMIT OF BERNOULLI-VORONOI AND POISSON-VORONOI MEASURES
… intensity p, as nuclei for a Voronoi tessellation and then delete edges whose end vertices lie in different Voronoi tiles. A natural question which arises in this context is the existence of the weak limit as the intensity of the nuclei tends to zero. In this work, we study the …
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