- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 111 to 120 of 9107 (0.03 seconds)| 111 |
Sparse matrix optimisation using automatic differentiationPrice, R. C. January 1987 (has links)
No description available.
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| 112 |
Cognitive processing biases in alcohol use, abuse and dependenceO'Connell, Bethany R. January 2000 (has links)
No description available.
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| 113 |
Visual interactive methods for vehicle routingCarreto, Carlos A. C. January 2000 (has links)
No description available.
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| 114 |
Monte Carlo simulations and analyses of backgrounds in the Sudbury Neutrino ObservatoryChen, Xin January 1997 (has links)
No description available.
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| 115 |
Heuristic approaches for routing optimisationKeuthen, Ralf January 2003 (has links)
No description available.
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| 116 |
The heartsink problem in general practiceMcDonald, Paul Stephen January 1993 (has links)
No description available.
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| 117 |
Applying knowledge-based techniques and artificial intelligence to automated problem solving in science, technology and bioinformaticsSullivan, Matthew John January 1999 (has links)
No description available.
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| 118 |
Varieties of groups of exponent fourQuick, Martyn January 1995 (has links)
No description available.
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Instability of Periodic Orbits of Some Rhombus and Parallelogram Four Body ProblemsMansur, ABDALLA 27 November 2012 (has links)
The rhombus and parallelogram orbits are interesting families of periodic solutions, which come from celestial mechanics and the N-body problem. Variational methods with finite order symmetry group are used to construct minimizing non-collision periodic orbits.
We study the question of stability or instability of periodic and symmetric periodic solutions of the rhombus and the equal mass parallelogram four body problems. We first study the stability of periodic solutions for the rhombus four body problem. An analytical description of the variational principle is used to show that the homographic solutions are the minimizers of the action functional restricted to rhombus loop space [23]. We employ techniques from symplectic geometry and specifically a variant of the Maslov index for curves of Lagrangian subspaces along the minimizing rhombus orbit to prove the main result, Theorem 4.2.2, which states that the reduced rhombus orbit is hyperbolic in the reduced energy manifold when it is not degenerate.
We second study the stability for symmetric periodic solutions of the equal mass parallelogram four body problem. The parallelogram family is a family of Z_2× Z_4 symmetric action minimizing solutions, investigated by [7]. In this example, the minimizing solution [7] can be extended to a 4T-periodic solution using symmetries through square and collinear configurations. The Maslov index of the orbits is used to prove the main result, Theorem 5.3.1, which states that the minimizing equal mass parallelogram solution is unstable when it is non-degenerate. / Thesis (Ph.D, Mathematics & Statistics) -- Queen's University, 2012-11-26 11:30:29.688
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Solving Linear Programming's Transportation ProblemCulp, William E. 05 1900 (has links)
A special case of the linear programming problem, the transportation problem, is the subject of this thesis. The development of a solution to the transportation problem is based on fundamental concepts from the theory of linear algebra and matrices.
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