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 850 for “"three-dimensions"”.
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Programming in three dimensions
… Cube, the first visual language to employ a three-dimensional syntax. The third dimension provides for a richer syntax, makes the language more expressive, and prepares the ground for novel, virtual-reality-based programming environments. We use dimensional extent to convey semantic meaning, …
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Spindle organization in three dimensions
… these results provide novel insights into the three-dimensional organization of microtubules during spindle assembly.
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Detecting open surfaces in three dimensions
… and detecting open surfaces embedded in three-dimensional image volumes. Open surfaces are two-dimensional manifolds with a one-dimensional boundary lying within a three-dimensional volume. Distinct portions of a closed surface can be modeled as open surfaces, as can very thin volumes …
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Probing quasar sight lines in three dimensions
… day disc galaxies. Taking advantage of the three-dimensional view provided by the IFS data, the second part of this thesis investigates extended emission line regions arising in the quasar neighborhood. We find that extended emission line nebulae are common around quasars, and explore the …
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Random geometry in two and three dimensions
… a large deviation principle for dimer tilings in three dimensions. This generalizes a two-dimensional result of Cohn, Kenyon, and Propp, and is one of the first results for dimers in any dimension d > 2. Many ideas and constructions used to study dimers are specific to two dimensions, so our …
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Kinematics and visualization of strain in three dimensions
A new computer program for strain visualization has been written. Given an upper triangular deformation tensor, which corresponds to homogeneous deformations where no shearing occurs in the z-direction (assuming a right-handed reference system), the program calculates and displays the strain …
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Dynamic timelines : visualizing historical information in three dimensions
Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1995.
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The visualization of strange attractors in three dimensions
… of strange attractors for dynamical systems with three variables is discussed. The structure and dimensionality of these attractors are observed with computer packages that have three dimensional viewing capabilities. The importance of visualizing these attractors is discussed. Some new visual …
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Percolation Paths of Three-Dimensions in Sensitized Stainless Steel
The study of three-dimensional percolation paths through materials is important in its contribution to understanding defect sensitive properties of materials. This work shows the importance of grain boundary character in modeling defect sensitive boundaries. Also presented are trends of percolation …
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Algorithms for Smooth and Deformable Surfaces in Three Dimensions
We develop an algorithm and software for the construction and visualization of the skin surface in 3D in various ways, namely, a parametric representation, static and dynamic triangulations. The triangulation algorithm is guaranteed to terminate with a high quality triangle mesh. In our …
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Computational aspects of ductile crack growth in three dimensions
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
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An empirical study of compliant assembly in three dimensions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.
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Numerical detection of complex singularities in two and three dimensions
… ascertain the nature of singularities in two and three-dimensional functions. Our results generalize a well known method for the analysis of singularities in one-dimensional functions to higher dimensions. As an example, we apply this method to analyze the complex singularities for the 2D inviscid …
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Initial and boundary value problems in two and three dimensions
… solve several BVPs for elliptic equations in two dimensions, as well as the heat equation in the interior of an equilateral triangle. The implementation of this approach: (a) provides an alternative way for obtaining classical solutions; (b) for problems that can be solved by classical methods, it …
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Groundwater monitoring in three dimensions using the multi-level sampler
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1990.
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Chamferless assembly of rectangular parts in two and three dimensions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Numerical study of fully nonlinear water waves in three dimensions
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1992.
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Numerical analysis of the Fokas method in two and three dimensions
… two-dimensional problem in a polygon, and the three dimensional problem in a polyhedron. The nature of elliptic equations means that, knowing the values of a solution on the boundary, one can reconstruct this function inside the domain. This amounts to finding a Dirichlet-to-Neumann (D2N) map, …
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Operational planning for multiple heterogeneous unmanned aerial vehicles in three dimensions
… collection. The planning is done for flight in three dimensions. The problem also includes time window constraints for data collection and incorporates human input in the planning process. Two solution methods are presented: (1) a mixed-integer program, and (2) an algorithm that utilizes a …
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