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  • On Simpson’s Paradox for Discrete Lifetime Distributions

    Creator:
    Lebowitz, Daniel
    Abstract:
    In probability and statistics, Simpson’s paradox is an apparent paradox in which a trend is present in different groups, but is reversed when the groups are combined. Joel Cohen (1986) has shown that continuously distributed lifetimes can never have a Simpson’s paradox. We investigate the same question for discrete random...
    Resource Type:
    Capstone Project

  • A Ross-Macdonald Model with Vector Demography

    Creator:
    Reyes Grimaldo, Ricardo Noe Gerardo
    Abstract:
    Malaria is a vector-borne disease that has affected humans and other animals for a long time and which has shown high prevalence among different populations. During the beginning of the 20th century, Sir Ronald Ross and George Macdonald developed a model that represents the spread of malaria through the interaction...
    Resource Type:
    Masters Thesis
    Full Text:
    thank the members of my thesis committee, Dr. Vrushali A. Bokil, Dr. Yevgeniy Kovchegov, and Dr. Mark

  • Data Collection in Sensor Networks via the Novel Fast Markov Decision Process Framework

    Creator:
    Duong, Thai
    Abstract:
    We investigate the data collection problem in sensor networks. The network consists of a number of stationary sensors deployed at different sites for sensing and storing data locally. A mobile element moves from sites to sites to collect data from the sensors periodically. There are different costs associated with the...
    Resource Type:
    Masters Thesis
    Full Text:
    my committee members Prof. Raviv Raich, Prof. Prasad Tadepalli, and Prof. Yevgeniy Kovchegov for

  • Some results in probability from the functional analytic viewpoint

    Creator:
    Gelbaum, Zachary A.
    Abstract:
    This dissertation presents some results from various areas of probability theory, the unifying theme being the use of functional analytic intuition and techniques. We first give a result regarding the existence of certain stochastic integral representations for Banach space valued Gaussian random variables. Next we give a spectral geometric construction...
    Resource Type:
    Dissertation
    Full Text:
    me to the study of Gaussian processes. Christine Escher, Bill Bogley, Yevgeniy Kovchegov, Bob Burton

  • Detecting bad smells in spreadsheets

    Creator:
    Asavametha, Atipol
    Abstract:
    Spreadsheets are a widely used end-user programming tool. Field audits have found that 80-90% of spreadsheets created by end users contain textual and formula errors in spreadsheets. Such errors may have severe negative consequences for users in terms of productivity, credibility, or profits. To solve the problem of spreadsheet errors,...
    Resource Type:
    Masters Thesis

  • Mathematical models of decision processes for dispersing animals

    Creator:
    Brugger, Max F.
    Abstract:
    Each chapter in this expository paper considers a mathematical model of an aspect of animal behavior, and how it affects the patterns of movement across and within a landscape. These models are all directly or indirectly related to questions in either Behavioral Ecology or Landscape Ecology, or both. I first...
    Resource Type:
    Capstone Project
    Full Text:
    my advisors and friends, Dr. Yevgeniy Kovchegov and Dr. Edward Waymire. Support for this research

  • An adiabatic approach to analysis of time inhomogeneous Markov chains : a queueing policy application

    Creator:
    Zacharias, Leena
    Abstract:
    In this thesis, convergence of time inhomogeneous Markov chains is studied using an adiabatic approach. The adiabatic framework considers slowly changing systems and the adiabatic time quantifies the time required for the change such that the final state of the system is close to some equilibrium state. This approach is...
    Resource Type:
    Masters Thesis
    Full Text:
    this work would not have materialized. I also thank Dr. Yevgeniy Kovchegov for his help with this work

  • Probabilistic models for classification of bioacoustic data

    Creator:
    Lakshminarayanan, Balaji
    Abstract:
    Probabilistic models have been successfully applied for a wide variety of problems, such as but not limited to information retrieval, computer vision, bio-informatics and speech processing. Probabilistic models allow us to encode our assumptions about the data in an elegant fashion and enable us to perform machine learning tasks such...
    Resource Type:
    Masters Thesis
    Full Text:
    useful for my research. I thank Dr. Yevgeniy Kovchegov for his valuable time. I thank all the members

  • Mode patterns in quadrupole resonator with anisotropic core

    Creator:
    Thongrattanasiri, Sukosin
    Abstract:
    This thesis deals with applications of uniaxial anisotropic crystals for microcavity resonators with partially chaotic underlying ray dynamics. We develop an implementation of the scattering matrix formalism, and relate the eigenvalues and eigenvectors of the scattering matrix to the field distribution of inside the system. Using the developed technique, we...
    Resource Type:
    Masters Thesis

  • Investigating Low-Frequency Vibrations in Condensed Matter Using Time-Resolved Third-Harmonic Generation Spectroscopy

    Creator:
    Wang, Liang
    Abstract:
    In this thesis, I present a new method we developed to study low frequency (< 700 cm⁻¹) vibrational dynamics: Time-resolved third-harmonic generation (TRTHG) spectroscopy. Among a variety of vibrational spectroscopy techniques, TRTHG differentiates itself with robustness, versatility, and simplicity. In TRTHG experiment, that involves only two ultrashort laser pulses, the...
    Resource Type:
    Masters Thesis
    Full Text:
    (Prof. of chemistry), Dr. Yun-Shik Lee, (Prof. of physics) and Dr. Yevgeniy Kovchegov (Prof. of