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  • About
  • 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.
11

Sequential bottleneck decomposition and the QNET method for some open multiclass queueing networks

Yeh, Ding-Horng 08 1900 (has links)
No description available.
12

A study of self-similar traffic generation for ATM networks

Chen, Hung-Ming January 1997 (has links)
This thesis discusses the efficient and accurate generation of self-similar traffic for ATM networks. ATM networks have been developed to carry multiple service categories. Since the traffic on a number of existing networks is bursty, much research focuses on how to capture the characteristics of traffic to reduce the impact of burstiness. Conventional traffic models do not represent the characteristics of burstiness well, but self-similar traffic models provide a closer approximation. Self-similar traffic models have two fundamental properties, long-range dependence and infinite variance, which have been found in a large number of measurements of real traffic. Therefore, generation of self-similar traffic is vital for the accurate simulation of ATM networks. The main starting point for self-similar traffic generation is the production of fractional Brownian motion (FBM) or fractional Gaussian noise (FGN). In this thesis six algorithms are brought together so that their efficiency and accuracy can be assessed. It is shown that the discrete FGN (dPGN) algorithm and the Weierstrass-Mandelbrot (WM) function are the best in terms of accuracy while the random midpoint displacement (RMD) algorithm, successive random addition (SRA) algorithm, and the WM function are superior in terms of efficiency. Three hybrid approaches are suggested to overcome the inefficiency or inaccuracy of the six algorithms. The combination of the dFGN and RMD algorithm was found to be the best in that it can generate accurate samples efficiently and on-the-fly. After generating FBM sample traces, a further transformation needs to be conducted with either the marginal distribution model or the storage model to produce self-similar traffic. The storage model is a better transformation because it provides a more rigorous mathematical derivation and interpretation of physical meaning. The suitability of using selected Hurst estimators, the rescaled adjusted range (R/S) statistic, the variance-time (VT) plot, and Whittle's approximate maximum likelihood estimator (MLE), is also covered. Whittle's MLE is the better estimator, the R/S statistic can only be used as a reference, and the VT plot might misrepresent the actual Hurst value. An improved method for the generation of self-similar traces and their conversion to traffic has been proposed. This, combined with the identification of reliable methods for the estimators of the Hurst parameter, significantly advances the use of self-similar traffic models in ATM network simulation.
13

On the stochastic behavior of Brownian particles in potential wells, as observed with optical traps /

Brody, Ross Paul, January 2008 (has links)
Thesis (Ph.D.) in Physics--University of Maine, 2008. / Includes vita. Includes bibliographical references (leaves 94-98).
14

A Verification of the theory of Brownian movements and a direct determination of the value of NE for gaseous ionization

Fletcher, Harvey, January 1911 (has links)
Thesis (Ph. D.)--University of Chicago, 1911. / "Reprinted from the Physical review, vol. XXXIII, no. 2, August, 1911." Includes bibliographical references.
15

Over de theorie van de Brown'sche beweging en daarmede verwante verschijnselen

Haas-Lorentz, Geertruida Luberta de. January 1912 (has links)
Thesis--Leiden. / Includes bibliographical references.
16

Applications of Brownian motion to economic models of optimal stopping

Ye, Meng-Hua. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. Includes bibliographical references.
17

Kinetics of Brownian particles driven through periodic potential energy landscapes /

Korda, Pamela T. January 2002 (has links)
Thesis (Ph. D.)--University of Chicago, Dept. of Physics, Dec. 2002. / Includes bibliographical references (p. 98-106). Also available on the Internet.
18

Coalescing Brownian motions on the line

Arratia, Richard Alejandro. January 1979 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 126-128).
19

A Verification of the theory of Brownian movements and a direct determination of the value of NE for gaseous ionization

Fletcher, Harvey, January 1911 (has links)
Thesis (Ph. D.)--University of Chicago, 1911. / "Reprinted from the Physical review, vol. XXXIII, no. 2, August, 1911." Includes bibliographical references.
20

Nonequilibrium brownian dynamics simulation of macromolecules in steady shear flow

Dotson, Paul J. January 1984 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 191-197).

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