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 187 for “"Probability Density Function"”.
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Probability Density Function Modeling of Turbulent Non-reactive and Reactive Spray Flows
Turbulente Sprays werden häufig im praktischen Verbrennungsystem angetroffen. Die Eigenschaften der turbulenten Sprays, wie Verteilung der Tröpfchengrößen und die Vermischung von Kraftstoff und Luft sind für die Effizienz, die Stabilität, und das Emissionsverhalten der Verbrennungprozesse sehr …
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Probability Density Function Estimation Applied to Minimum Bit Error Rate Adaptive Filtering
… of this research involves estimation of the probability density function (PDF) of the received signal; this PDF estimate is used to adaptively determine a solution that minimizes BER. To this end, a new adaptive procedure called the Minimum BER Estimation (MBE) algorithm has been developed. …
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Uncertainties in Oceanic Microwave Remote Sensing: The Radar Footprint, the Wind-Backscatter Relationship, and the Measurement Probability Density Function
… of bias and the Cramer-Rao lower bound. The probability density function of modified periodogram averages (a spectral estimation technique) is derived in generality and for the specific case of power estimates made by the NASA scatterometer. The impact on wind retrieval is quantified.</p>
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The Uniform Convergence of Special Standardized Distributions
… Gamma distribution is standardized, and then the probability density function of the standardized Gamma distribution is shown to converge uniformly to the probability density function of the normal distribution. The F-distribution is standardized, and then the probability density function of the …
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Reliability assessment under incomplete information: an evaluative study
… correlation between the variables when the joint probability density function is unknown. There are no reports that provide information of the accuracy of these methods. This work presents an evaluative study of reliability under incomplete information, comparing three existing methods for …
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Bayes and minimum variance unbiased estimators of reliability using the truncated Weibull life testing model
… we shall estimate the corresponding reliability function of the above estimators. The first type of estimator of θ and the reliability function we will consider is the Bayes estimator using the general uniform, exponential, and inverted gamma distributions as prior probability density functions …
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Ship Rolling Motion Subjected to Colored Noise Excitation
… the stochastic nonlinear dynamic behaviors and probability density function of ship rolling are studied by nonlinear dynamic method and probability theory. The probability density function of rolling response is evaluated through solving the stochastic differential equations by using path …
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Robust bifurcation behavior in the presence of external random excitation
… characteristics carry over to the steady state probability density function for the system in the presence of random external excitation. For systems with two critical modes, exemplified by an aircraft with marginally stable/unstable Dutch roll and spiral modes, the bifurcation behavior is …
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Estimation of a density function with applications to reliability
… the problem of estimation of a univariate probability density function. Let Y₁, Y₂, …, Y<sub>n</sub> be a sample of n independent observations, each distributed according to an unknown continuous density function f(y). Given this sequence of observations, how can one estimate f(y)? Chapter …
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The Fokker-Planck and Related Equations in Theoretical Population Dynamics
… some mechanism of growth, i.e. a growth rate function. However, such deterministic models are often highly unrealistic in population dynamics because population growth is basically a random event. There are a large number of chance factors influencing growth that might not be taken into …
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Probabalistic quantification of intermittently unstable dynamical systems
… time series of the system or heavy-tails in the probability density function (pdf) of the response. We formulate a method that can analytically approximate the response pdf (both the main probability mass and heavy-tail structure) for systems where intermittency is important to quantify. The …
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Experimental Investigations of Internal Air-water Flows
… pressure. It was demonstrated that the probability density function of the normalized differential pressure was indicative of the flow regime and using non-linear dimensionality reduction (the Elastic Maps Algorithm), it was possible to automate the process of identifying the flow regime …
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An Investigation into the Analysis of Truncated Standard Normal Distributions Using Heuristic Techniques
… utilizes unique properties of a characteristic function to analyze truncated assemblies. Billingsley (1995) suggests that an inversion equation aids in converting the characteristic functions for a given truncated standard normal distribution to its corresponding probability density function. …
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Using an FPGA-Based Processing Platform in an Industrial Machine Vision System
… Color Theory, the system developed a probability density function in 3-D color space for each class based on the parts assigned to that class during training. While sorting, the probability density function was generated for each scanned piece, and compared with each of the class …
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Integration of deviation zone evaluation and point measurement planning in coordinate metrology
… while the sampling is guided by a Gaussian probability density function to model the manufacturing error on a fabricated part. The proposed dynamic sampling is studied on actual manufactured parts with a virtual approach to test the ability of the method.
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A Full Distribution Approach to Simulating the Industry Aggregate in the Input-Output Modeling Framework
… of microlevel components by a theoretical probability density function (pdf) is introduced as an alternative to the traditional point estimate, given the varied and strongly skewed observed production coefficient distributions.
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Statistical Analysis of High-Order Moments from Direct Numerical Simulation of a Turbulent Boundary Layer
… series expansions of the marginals of the joint probability density function of the flow are presented. Reasonable agreement was found for most of the moment interrelations. Flow visualizations using the Q criterion are also presented.
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Automated Visual Database Creation For A Ground Vehicle Simulator
… uses an initial truth frame to develop a color probability density function (PDF) of the road versus the terrain. Subsequent frames are segmented using a Maximum Apostiori Probability (MAP) criteria and the resulting templates are used to update the PDFs. Color segmentation worked well where …
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Exploring Statistic Features for Computationally-Efficient Maximum-Likelihood Algorithms in Signal Processing and Communications Applications
… estimating the parameters in a Gaussian mixture probability density function has been prevalent in the literature for nearly a century. During the last two decades, the method of maximum likelihood has become the predominant approach to this problem. In this thesis work, we try to combat the …
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Weighted Inverse Weibull and Beta-Inverse Weibull Distribution
… Weibull distribution including the hazard function, reverse hazard function, moments, moment generating function, coefficient of variation, coefficient of skewness, coefficient of kurtosis, Fisher information and Shanon entropy are studied. The estimation for the parameters of the …
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