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 51 for “"exponential distribution"”.
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The Zero-Truncated Poisson-Weighted Exponential Distribution with Applications
This research proposes a new distribution for non-zero count data, namely the zero-truncated Poisson-weighted exponential distribution (ZTPWE). The Poisson- weighted exponential distribution(P-WE) has been proved to be a flexible two-parameter distribution; therefore, Zero-truncated models can be …
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Statistical inferences of Rs;k = Pr(Xk-s+1:k > Y ) for general class of exponentiated inverted exponential distribution with progressively type-II censored samples with uniformly distributed random removal
… general class of exponentiated inverted exponential (GCEIE) progressively type-II right censored data with uniformly random removal random variables, are discussed. We use p-value as a basis for hypothesis testing. There are no exact or approximate inferential procedures for reliability …
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Generating Generalized Exponentially Distributed Random Variates with Transformed Density Rejection and Ratio-of-Uniform Methods
… The assumption is often valid, but the normal distribution may not be able to model the channel noise adequately in some environments. This thesis will explore the generalized exponential distribution for better noise modeling and robustness testing in communication system. When using the …
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An Estimation Problem of Large Claims on Actuarial Decisions
… by assuming the claim amounts follow an exponential distribution and by applying the Cramer-Lundberg model so that the number of claims follows a Poisson process. Since these expected values are based on two parameters, which may be unknown, estimates for these parameters are also …
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Sequential and Non-Sequential Confidence Intervals With Guaranteed Coverage Probability and Beta-Protection (Estimation, Statistics, Minimaxity)
… one-sided confidence intervals for the mean of a distribution. Let (mu) be the mean (of a normal distribution with variance 1, or of a 1-parameter exponential distribution) and let (phi)((mu)) be a function of (mu). Given error probabilities (alpha) and (beta), we require that the interval I …
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Inconsistency of Statistical Tests to Discriminate Lifetime Distributions and lines of Indistinguishabilty in Uniform Metric
… success of a particular product. The lifetime distribution method is widely used in the engineering and biomedical applications; In this thesis, I focus on the three most commonly used lifetime distributions: Gamma distribution, Weibull distribution, and Generalized Exponential distribution. …
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Environmental thermal stresses as a first passage problem
… process or Markov process. In both cases, the distribution of the time to first passage is taken to be the exponential distribution. Because the material is viscoelastic, statistically and time varying barriers (strengths) with Normal, Log-Normal, or Neibull distributions are considered. …
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Parameter estimation for a two-state semi-Markov model of a univariate point process.
… test of fit was conducted. The asymtotic exponential distribution and independence of the periodogram points were used to calculate an approximate likelihood function. A system of equations was then formed to find the maximum likelihood estimates of the parameters. Since closed-form …
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Atstatymo lygties sprendinio aproksimavimas klasikiniame rizikos modelyje /
… the probability of ultimate ruin for any loss distribution, along with empirical method analysis. By employing the recovery equation, three expressions for ψ(u) are derived analytically for testing when claims are distributed according to: exponential distribution, mixture of two exponential …
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Forecasting Highly-Aggregate Internet Time Series Using Wavelet Techniques
… 40â intervals) are shown to adhere to a Gaussian distribution upon detrending, which imposes limits to the exponential distribution of higher time-resolution traces. Wavelet estimation of the Hurst-parameter is shown to outperform estimation by another common method (Sample-Variances). The First …
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The LASSO linear mixed model for mapping quantitative trait loci
… a random model where the effects follow a double exponential distribution. In this thesis, the LASSO is investigated from a random effects model perspective. Two methods to approximate the marginal likelihood are presented. The first uses the standard form for the double exponential distribution …
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Joint Modeling of Tumor Size and Time-to-Event
… where a nonlinear mixed-effect model with both exponential shrinkage and a linear progression term with time is used to describe the change in tumor size and an accelerated failure time frailty model with either weibull or exponential distribution is used to describe the overall survival time. …
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LIMIT THEOREMS FOR FUNCTIONS OF MARGINAL QUANTILES AND ITS APPLICATION.
… mainly studied how to explore multivariate distribution using the joint distribution of marginal quantiles. Limit theory for the mean of functions of order statistics is presented. The result include multivariate central theorem and strong law of large numbers.This leads to the central limit …
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Stochastic Petri Net Models of Service Availability in a PBNM System for Mobile Ad Hoc Networks
… associated with system processes follow an exponential distribution and a more complex non-Markovian scenario where we model the system processes according to general distribution functions as observed through simulation. We illustrate that the simplified Markovian model provides a …
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Analysis of congested clients' flows in banking systems: A case study of Standard Bank Namibia
… arrivals were described by a poison distribution and service times by exponential distribution. Descriptive analysis was used to describe the parameters of the queuing system, a radar chart to display the aggregate results and the one way analysis of variance (ANOVA) to establish …
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Point estimation with sequential order statistics from exponential distributions
… after the occurrence of a failure, the lifetime distributions of the remaining components are parametrically adjusted. These adjustments are described by numerical values of the model parameters. A major concern of this thesis is to derive the joint density function of a multiply type II censored …
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Statistical Modeling to Information Retrieval for Searching from Big Text Data and Higher Order Inference for Reliability
… model. Simulation studies are conducted on two distributions: Burr type X distribution and exponentiated exponential distribution. Results from simulation studies show that the proposed method is very accurate even when the sample sizes are small.
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Handover in digital cellular mobile communication systems
… time can be described by the generalized gamma distribution, while the channel holding time can be best approximated by the negative exponential distribution. Based on these findings a teletraffic model that takes the user mobility into account is presented and is substantiated using a computer …
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Performance evaluation of checkpoint rollback recovery algorithms in distributed systems
… performance was analyzed using the Weibull distribution which has been shown to model experimental failure data better than the exponential distribution. Finally, the distributed system model was used as a basis for extended general network models that cover the different assumptions of the …
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LEARNING AND OVERLAPS IN QUEUES
… customers in the M/M/1 queue has a conditional distribution that is given by an exponential distribution, however, as the distance between customers grows, the probabil- ity of a non-negative overlap time decreases geometrically. We also find via simulation that the exponential distribution …
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