Global ETD Search
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Showing 1 to 20 of 971 for “"Poisson"”.
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Studies in the Wigner-Poisson and Schroedinger-Poisson Systems
… dots has lead to an intense study of the Wigner-Poisson (WP) and Schroedinger-Poisson (SP) systems. In this work we present the mathematical analysis of several related models for these systems. These include: a time-dependent model of dissipation in (SP), a quasi-linear (SP) system, a study of …
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Stacks in Poisson geometry
… The last chapter discusses a remarkable class of Poisson manifolds, called b-symplectic manifolds, giving a classification of them up to Morita equivalence and computing their Picard group.
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Poisson regression with Laplace measurement error
… procedures are proposed for a class of Poisson linear regression when the covariate is contaminated with Laplace measurement error. This dissertation contains two research projects. In the first project, we propose a weighted least squares estimation procedure that incorporates the first …
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Surveillance of Poisson and Multinomial Processes
… investigated here. The first scenario involves Poisson count data where the area of opportunity changes. A modified exponentially weighted moving average (EWMA) chart is proposed to accommodate the varying sample sizes. The performance of this method is compared with the performance for several …
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Απεικονίσεις Yang-Baxter, δομή Poisson και ολοκληρωσιμότητα
… πινάκων εφοδιασμένων με μια κατάλληλη δομή Poisson (αγκύλη Sklyanin). Στην περίπτωση των 2x2 πινάκων Lax, οι αντίστοιχες απεικονίσεις είναι συμπλεκτικές, τετράρητες και ταξινομούνται με βάση τον μεγιστοβάθμιο όρο του πίνακα Lax ως προς την ισοδυναμία απεικονίσεων Yang-Baxter. Εκφυλισμένες …
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Complexity as Aging Non-Poisson Renewal Processes
… In this dissertation the emergence of non-Poisson renewal processes in several complex systems is investigated. After reviewing the basics of renewal theory, another popular approach to complexity, called modulation, is introduced. I show how these two different approaches, given a suitable …
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Sequential test for homogeneity of Poisson populations
Not available
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REGULARIZATION METHODS FOR ILL-POSED POISSON IMAGING
… coupled device (CCD) camera is predominantly of Poisson type. This motivates the use of the negative logarithm of the Poisson likelihood in place of the ubiquitous least squares t-to-data. However, if the underlying mathematical model is assumed to have the form z = Au, where A is a linear, …
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REGULARIZATION METHODS FOR ILL-POSED POISSON IMAGING
… coupled device (CCD) camera is predominantly of Poisson type. This motivates the use of the negative logarithm of the Poisson likelihood in place of the ubiquitous least squares t-to-data. However, if the underlying mathematical model is assumed to have the form z = Au, where A is a linear, …
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Multilevel Methods for the Poisson-Boltzmann Equation
We consider the numerical solution of the Poisson-Boltzmann equation (PBE), a three-dimensional second order nonlinear elliptic partial differential equation arising in biophysics. This problem has several interesting features impacting numerical algorithms, including discontinuous coefficients …
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Spectral element poisson preconditioners for heterogeneous architectures
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Gluon radiation beyond Poisson using MHV techniques
… photon emissions current to reproduce the Poisson distribution of photon radiated from a high energetic quark. Then we derive the equivalent current for the case of multiple gluon emissions in vacuum. We then use the previous result to compute the two gluon correlation. We also study the …
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Communication in a Poisson field of interferers
… are spatially scattered according to a Poisson field, and are operating asynchronously in a wireless environment; subject to path loss, shadowing, and multipath fading. We consider both cases of slow and fast-varying interferer positions. Under this scenario, we determine the statistical …
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Regression analysis for estimation of the influencing factors on road accident injuries in Oman Poisson Regression Model and Poisson Alternatives
… safety research to model accident counts Yi as Poisson distributed random variables that Yi ~ Pois (λi) corresponds to a random distribution of the accidents over time and space. Accident data have often been shown to exhibit overdispersion, which make it essential to use alternatives of Poisson …
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Detecting change-points in a Compound Poisson Process
… changes in the distribution of a Compound Poisson Process where the variables being summed are iid normal and the number of variable follows Poisson. The maximum likelihood ratio for the location of the change point will be explored as well as an information criterion developed, for the …
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