Sökning: "Computational geometry"
Visar resultat 11 - 15 av 282 avhandlingar innehållade orden Computational geometry.
11. Geometric Decompositions and Networks - Approximation Bounds and Algorithms
Sammanfattning : In this thesis we focus on four problems in computational geometry: In the first four chapters we consider the problem of covering an arbitrary polygon with simpler polygons, i.e., rectangles. LÄS MER
12. Managing Geometrical Variation through Optimization and Visualization
Sammanfattning : All manufacturing processes are afflicted by variation that causes deviations in critical dimensions in the final product. Geometrical variation results in form and size deviation in individual parts. Assembly variation comes from defects in assembly equipment, and influence how parts are mounted together. LÄS MER
13. Computational Modeling of Reaction and Diffusion Processes in Mammalian Cell
Sammanfattning : PAHs are the reactive toxic chemical compounds which are present as environmental pollutants. These reactive compounds not only diffuse through the membranes of the cell but also partition into the membranes. They react with the DNA of the cell giving rise to toxicity and may cause cancer. LÄS MER
14. Multiscale Methods and Uncertainty Quantification
Sammanfattning : In this thesis we consider two great challenges in computer simulations of partial differential equations: multiscale data, varying over multiple scales in space and time, and data uncertainty, due to lack of or inexact measurements.We develop a multiscale method based on a coarse scale correction, using localized fine scale computations. LÄS MER
15. Simulation of Electro-Optic Modulators by a Time-Domain Beam-Propagation Method
Sammanfattning : Electro-optic modulators (EOMs) are components which convert electric signals to optical ones. They are needed, e.g., at the transmitter end of fiber-optic communication systems and in time-stretch analog-to-digital converters. LÄS MER
