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2014

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Viewing The Moon In Infrared, Kyle Beekman Dec 2014

Viewing The Moon In Infrared, Kyle Beekman

Statistics

Man has been fascinated by the heavens since ancient times, yet there is still so much that we don’t know. This project was created by Dr. Gary Hughes with goal of obtaining information about the moon and other objects in the vicinity of the Earth. The project was mostly experimental in nature and there was no specific goal at the outset of the project. In the end the project focused on the moon and meteors that traveled through the Earth’s upper atmosphere. Throughout the month of August, students traveled to the Mount Barcroft Research Station in the Eastern Sierras to …

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Bayesian Estimation Of Asymmetric Jump-Diffusion Processes, Samuel J. Frame, Cyrus A. Ramezani Dec 2014

Bayesian Estimation Of Asymmetric Jump-Diffusion Processes, Samuel J. Frame, Cyrus A. Ramezani

Statistics

The hypothesis that asset returns are normally distributed has been widely rejected. The literature has shown that empirical a<>set returns are highly skewed and Ieptokurtic. The affine jump-diffusion (AJD) model improves upon the normal specification by adding a jump component to the price process. Two important extensions proposed by Ramezani and Zeng (1998) and Kou (2002) further improve the AJD specification by having two jump components in the price process, resulting in the asymmetric affine jump-diffusion (AAJD) specification. The AAJD specification allows the probability distribution of the returns to be asymmetrical. That is, the tails of the distribution are …

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The Cadet Training Program Versus The Student Certification Program: A Study Of It- Support Training Programs At Western Kentucky University, Michael Courtney Moore Dec 2014

The Cadet Training Program Versus The Student Certification Program: A Study Of It- Support Training Programs At Western Kentucky University, Michael Courtney Moore

Masters Theses & Specialist Projects

Technology is a critical component of modern-day success. Advancements in technology have improved communication between individuals and companies. Technological advancements have allowed students to earn college degrees online. People who habitually use technology expect a high level of performance and support. As new technologies are implemented, such as complex web services or new operating systems, the dependence for information technology (IT) support grows in demand. Even learning curves can be cumbersome without proper assistance from IT professionals. Companies and institutions must accommodate user needs by implementing fast, efficient, and friendly support. In order to offer optimal customer support, representatives must …

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The Effect Of Functional Fixation In Problem Solving Among Preschool, Second Grade, And Ninth Grade Children, Michael Kenneth Nehring Dec 2014

The Effect Of Functional Fixation In Problem Solving Among Preschool, Second Grade, And Ninth Grade Children, Michael Kenneth Nehring

Dissertations

Functional fixedness is a cognitive function whereby an individual becomes fixated on a given function of an object, which prevents the individual from using the object in an alternative fashion to solve a problem (Duncker, 1935/1945). The current study analyzed the effect of functional fixedness on 36 children from three different age groups, preschool, second grade, and ninth grade. The children were presented with a problem solving activity based on a problem used by German and Defeyter (2000), in which they concluded that young children are immune to the effects of functional fixedness. Research conducted by Chrysikou (2006) indicated using …

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Relation Of Chlorine Demand To The Water Quality Of Beaver Lake, Erin E. Scott, Jaime M. Gile, Brian E. Haggard Dec 2014

Relation Of Chlorine Demand To The Water Quality Of Beaver Lake, Erin E. Scott, Jaime M. Gile, Brian E. Haggard

Arkansas Water Resources Center Technical Reports

No abstract provided.

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Multi-Armed Bandits With Applications To Markov Decision Processes And Scheduling Problems, Isa Mithqal Muqattash Dec 2014

Multi-Armed Bandits With Applications To Markov Decision Processes And Scheduling Problems, Isa Mithqal Muqattash

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The focus of this work is on practical applications of stochastic multi-armed bandits (MABs) in two distinctive settings. First, we develop and present REGA, a novel adaptive sampling-based algorithm for control of finite-horizon Markov decision processes (MDPs) with very large state spaces and small action spaces. We apply a variant of the epsilon-greedy multi-armed bandit algorithm to each stage of the MDP in a recursive manner, thus computing an estimation of the " reward-to-go" value at each stage of the MDP. We provide a finite-time analysis of REGA. In particular, we provide a bound on the probability that the approximation …

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The Mechanisms Of Nmda Receptor Activation, Rashek Kazi Dec 2014

The Mechanisms Of Nmda Receptor Activation, Rashek Kazi

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Glutamate-gated ion channels embedded within the neuronal membrane are the primary mediators of fast excitatory synaptic transmission in the central nervous system. The ion channel of these glutamate receptors contains a pore-lining transmembrane M3 helix surrounded by peripheral M1 and M4 helices. In the NMDA receptor (NMDAR), opening of the ion channel pore requires rearrangements of these helical elements, but there is currently no functional model for how this occurs. To address how agonist binding is transduced into pore opening in NMDARs, we manipulated the coupling between the ligand binding domain (LBD) and the M3 helix of the ion channel …

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Measuring The Anti-Quark Contribution To The Proton Spin Using Parity Violating W Production In Polarized Proton Proton Collisions, Ciprian Gal Dec 2014

Measuring The Anti-Quark Contribution To The Proton Spin Using Parity Violating W Production In Polarized Proton Proton Collisions, Ciprian Gal

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Since the 1980s the spin puzzle has been at the heart of many experimental measurements. The initial discovery that only ~30% of the spin of the proton comes from quarks and anti-quarks has been refined and cross checked by several other deep inelastic scattering (DIS) and semi inclusive DIS (SIDIS) experiments. Through measurements of polarized parton distribution functions (PDFs) the individual contributions of the u, d, \bar{u}, \bar{d}, quarks have been measured. The flavor separation done in SIDIS experiments requires knowledge of fragmentation functions (FFs). However, due to the higher uncertainty of the anti-quark FFs compared to the quark FFs, …

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Neutral Current Pi-Zero Production Rate Measurement On-Water Using The Pi-Zero Detector In The Near Detector Of The T2k Experiment, Karin Elisabeth Gilje Dec 2014

Neutral Current Pi-Zero Production Rate Measurement On-Water Using The Pi-Zero Detector In The Near Detector Of The T2k Experiment, Karin Elisabeth Gilje

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The T2K Experiment is a long-baseline neutrino experiment that stretches 295 km from the east to the west coast of Japan (Tokai-Mura to Kamioka). One of the major goals of the experiment is a measurement of theta_{13} and (if theta_{13} is non-zero) potentially CP violation in the lepton sector. This is performed by searching for nu_e appearance in a nu_mu beam from the Japan Proton Accelerator Research Complex (J-PARC). The far detector, Super Kamiokande (SK), is a water Cherenkov detector. One of the dominant background for SK in the oscillation measurement is the uncertainty on the cross section of the …

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Qcd Factorization For Heavy Quarkonium Production And Fragmentation Functions, Hong Zhang Dec 2014

Qcd Factorization For Heavy Quarkonium Production And Fragmentation Functions, Hong Zhang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

From the Tevatron and the LHC data, it is clear that current models for the heavy quarkonium production are not able to explain the polarization of produced heavy quarkonia at large transverse momentum pT. A new approach to evaluate the heavy quarkonium production, by expanding the cross section in powers of 1/pT before the expansion in powers of &alphas, was proposed recently. In terms of the QCD factorization, it is proved that both the leading and next-to-leading power terms in 1/pT for the cross sections can be systematically factorized to all orders in powers …

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Multi-Armed Bandits With Applications To Markov Decision Processes And Scheduling Problems, Isa Mithqal Muqattash Dec 2014

Multi-Armed Bandits With Applications To Markov Decision Processes And Scheduling Problems, Isa Mithqal Muqattash

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The focus of this work is on practical applications of stochastic multi-armed bandits (MABs) in two distinctive settings. First, we develop and present REGA, a novel adaptive sampling-based algorithm for control of finite-horizon Markov decision processes (MDPs) with very large state spaces and small action spaces. We apply a variant of the epsilon-greedy multi-armed bandit algorithm to each stage of the MDP in a recursive manner, thus computing an estimation of the " reward-to-go" value at each stage of the MDP. We provide a finite-time analysis of REGA. In particular, we provide a bound on the probability that the approximation …

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Affine Stratifications And Equivariant Vector Bundles On The Moduli Of Principally Polarized Abelian Varieties, Anant Atyam Dec 2014

Affine Stratifications And Equivariant Vector Bundles On The Moduli Of Principally Polarized Abelian Varieties, Anant Atyam

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

We explicitly construct a locally closed affine stratification of the coarse moduli space of principally polarized abelian four folds A4 over the complex numbers and using the work of Roth and Vakil, produce an upper bound for the coherent cohomological dimension and the constructible cohomological dimension of A4. Based on the work of Oort and Van Der Geer, we make a conjecture on the cohomological dimension of the moduli stack Ag for all g. In the second part of the thesis we study the ring of equivariant vector bundles on Ag and study the chern character map from this ring …

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On The Moduli Space Of Quintic Surfaces, Patricio Gallardo Dec 2014

On The Moduli Space Of Quintic Surfaces, Patricio Gallardo

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

We describe the GIT compactification for the moduli space of smooth quintic surfaces in projective space. This GIT quotient is used along with the stable replacement for studying the geometry of another special compactification which was developed by Kollár, Shepherd-Barron and Alexeev. In particular, we discuss the interplay between GIT stable quintic surfaces with minimal elliptic singularities and boundary divisors in the KSBA space. | We describe the GIT compactification for the moduli space of smooth quintic surfaces in projective space. This GIT quotient is used along with the stable replacement for studying the geometry of another special compactification which …

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Holomorphic Twistor Spaces And Bihermitian Geometry, Steven Michael Gindi Dec 2014

Holomorphic Twistor Spaces And Bihermitian Geometry, Steven Michael Gindi

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Ever since the 1970's, holomorphic twistor spaces have been used to study the geometry and analysis of their base manifolds. In this dissertation, I will introduce integrable complex structures on twistor spaces fibered over complex manifolds that are equipped with certain geometrical data. The importance of these spaces will be shown to lie, for instance, in their applications to bihermitian geometry, also known as generalized Kahler geometry. (This is part of the generalized geometry program initiated by Nigel Hitchin.) By analyzing their twistor spaces, I will develop a new approach to studying bihermitian manifolds. In fact, I will demonstrate that …

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Almost-Kahler Anti-Self-Dual Metrics, Inyoung Kim Dec 2014

Almost-Kahler Anti-Self-Dual Metrics, Inyoung Kim

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

We show the existence of strictly almost-Kahler anti-self-dual metrics on certain 4-manifolds by deforming a scalar-flat Kahler metric. On the other hand, we prove the non-existence of such metrics on certain other 4-manifolds by means of Seiberg-Witten theory. In the process, we provide a simple new proof of the fact that any almost-Kahler anti-self-dual 4-manifold must have a non-trivial Seiberg-Witten invariant. | 69 pages

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Limits Of Real-Normalized Dierentials On Stable Curves, Chaya Rifka Norton Dec 2014

Limits Of Real-Normalized Dierentials On Stable Curves, Chaya Rifka Norton

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

A recent approach proposed by Grushevsky and Krichever uses real-normalized differentials, meromorphic differentials with all periods real, to study the geometry of the moduli space of curves. We describe the behavior of real-normalized differentials under degeneration of the Riemann surface, and this analysis allows us to study the limits of zeros of these differentials near the boundary of the Deligne-Mumford compactification of the moduli space of curves. Our explicit description of the behavior of real-normalized differentials near nodal curves provides a tool for understanding common zeros of such differentials which has applications for the study of plane curves. This analysis …

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The Kontsevich Space Of Rational Curves On Cyclic Covers Of Projective Space, Lloyd Smith Dec 2014

The Kontsevich Space Of Rational Curves On Cyclic Covers Of Projective Space, Lloyd Smith

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In this thesis we consider the space of rational curves on a smooth cyclic cover of Pn. These varieties are the simplest examples of Fano varieties beyond the classical examples of complete intersections in homogeneous spaces. We show that for a general cyclic cover, the Kontsevich moduli stack of stable curves in X is irreducible and has the expected dimension. Specifically, let X be a general smooth cyclic cover of Pn of degree r branched over a divisor of degree rd, and let M(X,e) be the Kontsevich moduli stack of stable rational curves of degree e on X. We show …

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Optimization Of Heat Exchanger In Vuilleumier Heat Pump Using Teaching-Learning Based Algorithm, Siddhartha Gadiraju Dec 2014

Optimization Of Heat Exchanger In Vuilleumier Heat Pump Using Teaching-Learning Based Algorithm, Siddhartha Gadiraju

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Air conditioning, space heating, and water heating makeup the largest proportion of building energy use in the U.S. | making this segment an enormously rich opportunity for energy and cost savings. Devices like Vuilleumier Heat Pump (VHP), which can provide space heating, cooling and water heating at the same time, have very high efficiency compared to conventional air conditioners, space heaters and water heaters available in the market. The heat exchangers of a VHP play a significant role, and it affects the performance of a VHP significantly. Multi-Objectives such as reducing the pressure drop and dead volume of the working …

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Identification And Model Reduction Of Mimo Systems In Triangular Input Balanced Form, Xiao Yu Dec 2014

Identification And Model Reduction Of Mimo Systems In Triangular Input Balanced Form, Xiao Yu

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Consider a discrete-time linear time invariant (LTI) d-dimensional innova- tions model, z(t+1) = Az(t)+Bx(t), (1) y(t) = Cz(t)+x(t), (2) where y (t) is a sequence of d-dimensional measurement vectors and z (t) is a state vector of dimension n. The triangular input balanced (TIB) representation of the LTI system was introduced by A.Mullhaupt and K.Riedel [1] in 1995. In the Single-Input Single-Output (SISO) case, the TIB pair is uniquely determined by the poles of the system. However, the poles alone are not enough to fully characterize the Multi-Input Multi-Output (MIMO) TIB pair. We parametrize MIMO transfer functions in terms of …

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Modeling The Effect Of Sequencing Error, Ruiqi Zhang Dec 2014

Modeling The Effect Of Sequencing Error, Ruiqi Zhang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Genotype misclassification errors are known to reduce the power to detect genetic association, but the size of the effect is not known in next generation sequencing (NGS). The non-centrality parameter (NCP) and hence power of the association test allowing for errors for a specified error model at a base pair was found. This NCP was compared to the NCP for the usual chi-square test. The asymptotic power was compared to simulated power for specific settings of the true genotype and phenotype frequencies in the case and control populations, genotype misclassification rates, and total sample size. An R script was provided …

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Characterization Of The Spatial And Temporal Variations Of Submarine Groundwater Discharge Using Electrical Resistivity And Seepage Measurements, Josephine Miryam Kalyanie Durand Dec 2014

Characterization Of The Spatial And Temporal Variations Of Submarine Groundwater Discharge Using Electrical Resistivity And Seepage Measurements, Josephine Miryam Kalyanie Durand

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Submarine groundwater discharge (SGD) encompasses all fluids crossing the sediment/ocean interface, regardless of their origin, composition or driving forces. SGD provides a pathway for terrestrial contaminants that can significantly impact coastal ecosystems. Overexploitation of groundwater resources can decrease SGD which favors seawater intrusion at depth. Understanding SGD is therefore crucial for water quality and resource management. Quantifying SGD is challenging due to its diffuse and heterogeneous nature, in addition to significant spatio-temporal variations at multiple scales. In this thesis, an integrated approach combining electrical resistivity (ER) surveys, conductivity and temperature point measurements, seepage rates using manual and ultrasonic seepage meters, …

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Millennium Accidents, Breaking Narratives In Pedro Almodã³Var And Alejandro Gonzã¡Lez Iã±Ã¡Rritu | Millennium Accidents, Breaking Narratives In Pedro Almodóvar And Alejandro González Iñárritu, Anna S Shilova Dec 2014

Millennium Accidents, Breaking Narratives In Pedro Almodã³Var And Alejandro Gonzã¡Lez Iã±Ã¡Rritu | Millennium Accidents, Breaking Narratives In Pedro Almodóvar And Alejandro González Iñárritu, Anna S Shilova

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Millennium Accidents is an attempt to show the relation between the shattered, fragmented and decentralizing nature of contemporary, globalized reality and the texts it produces. In my research I aim to reveal the changes in the building and development of a story as a narrative and cognitive phenomenon. Economic globalization and the high-tech revolution have led to a modification of our mental, emotional and social functioning, converting the whole world into a huge network. Consequently, narrative-- be it verbal or iconic--shows the same metamorphosis as it generates multiple plots, neglects temporal and spatial conventions, and moves beyond national identities. Six …

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Energy Technology Allocation For Distributed Energy Resources: A Technology-Policy Framework, Sreekanth Mallikarjun Dec 2014

Energy Technology Allocation For Distributed Energy Resources: A Technology-Policy Framework, Sreekanth Mallikarjun

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Distributed energy resources (DER) are emerging rapidly. New engineering technologies, materials, and designs improve the performance and extend the range of locations for DER. In contrast, constructing new or modernizing existing high voltage transmission lines for centralized generation are expensive and challenging. In addition, customer demand for reliability has increased and concerns about climate change have created a pull for swift renewable energy penetration. In this context, DER policy makers, developers, and users are interested in determining which energy technologies to use to accommodate different end-use energy demands. We present a two-stage multi-objective strategic technology-policy framework for determining the optimal …

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Between Here And There: The Ambiguous Ecologies Of Charles Simonds, Scott Volz Dec 2014

Between Here And There: The Ambiguous Ecologies Of Charles Simonds, Scott Volz

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

At the start of the 1970s, Charles Simonds began constructing miniature architectural ruins, what he calls dwellings, on the streets of New York City. They were fragile, temporary, and site specific. Occupying windowsills, wall crevices, and street gutters, the dwellings transformed their spaces from liminal to distinct. Over the course of the decade, Simonds built hundreds of dwellings in the Lower East Side alone, and they consequently developed a strong connection to the neighborhood. This essay addresses the dwellings as sites of makeshift ecologies. Looking at the reflexive relation between Simonds' sculptures and deteriorated living conditions in the Lower East …

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Analysis Of Principal Structural Orientation Of Trabecular Bone Using Quantitative Ultrasound, Liangjun Lin Dec 2014

Analysis Of Principal Structural Orientation Of Trabecular Bone Using Quantitative Ultrasound, Liangjun Lin

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Quantitative ultrasound (QUS) has been accepted widely as a non-invasive, economic, non-radioactive and portable modality for assessing bone heath status. This technology utilizes the basic physical mechanism of interaction between ultrasound wave and bone structure to provide mechanical and structural information of bone. Instead of only evaluating the quantity of bone like other traditional techniques such as duel energy X-ray absorptiometry (DXA), QUS is also capable of measuring the quality of bone such as anisotropy, microarchitecture and microfracture. This advantage of QUS is beneficial for treating the patient suffering from osteoporosis or other bone health deterioration, long term bed-rest patient …

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The Other Half Of The Protein Folding Equation Characterization Of The Protein Denatured State Ensemble (Dse): The Case Of C-Terminal Domain Of The Ribosomal Protein L9 (Ctl9), Bowu Luan Dec 2014

The Other Half Of The Protein Folding Equation Characterization Of The Protein Denatured State Ensemble (Dse): The Case Of C-Terminal Domain Of The Ribosomal Protein L9 (Ctl9), Bowu Luan

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Studies on the unfolded state of proteins are important for understanding the mechanism of protein folding. The protein unfolded state or protein denatured state ensemble (DSE) is the starting point for protein folding. It provides a thermodynamic reference state for protein stability, and it can be targeted by rational protein design. Studies of the properties of DSEs can also reveal the factors that impact protein misfolding and modulate the tendency for protein aggregation in vitro and in vivo, and amyloid formation. The 92-residue C-terminal domain of ribosomal protein L9 (CTL9) is used as a model to study protein DSEs. This …

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Structural And Optical Characterization Of Semiconductors For Solar Water Splitting, Andrew Charles Malingowski Dec 2014

Structural And Optical Characterization Of Semiconductors For Solar Water Splitting, Andrew Charles Malingowski

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Finding a clean and renewable source of energy that can compete commercially with fossil fuels is one of the great challenges facing the world today. Photoactive semiconductors that can be used to split water into hydrogen and oxygen gas by absorbing visible light are one means of harvesting the sun's abundant energy and storing it as chemical fuel. Although several photoactive semiconductor systems have demonstrated water splitting, one is yet to be found that has a high enough H2 production efficiency to be a commercially viable source of renewable energy. Water splitting using a photoactive semiconductor is a complex process …

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Performance Optimization In Large-Scale 802.11n Wireless Local Area Networks, Dawei Gong Dec 2014

Performance Optimization In Large-Scale 802.11n Wireless Local Area Networks, Dawei Gong

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Recently, wireless local area networks (WLANs) have become an indispensable part of our daily life. To enhance the rate, range and reliability of WLANs, the IEEE 802.11n standard has introduced several new technologies, such as multiple input multiple output (MIMO), channel bonding and frame aggregation. However, the performance of WLANs is often unsatisfactory. In this dissertation, we study performance optimization in large-scale 802.11n WLANs, aiming at improving network throughput, reducing transmission failures, and enhancing the reliability and efficiency of link-layer multicast. In WLANs, clients need to associate with an access point (AP) to access the network. An AP and its …

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Graph Theory Based Design Of Scalable Network Systems, Dongsoo Kim Dec 2014

Graph Theory Based Design Of Scalable Network Systems, Dongsoo Kim

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Due to the Internet's enormous growth in size, interconnecting heterogeneous networks reliably and efficiently has been a major topic in computer networks research for decades. Currently, more than four billions users (hosts) are connected through the Internet and the number is still growing. To achieve scalable networking, many researchers have invented and improved communication topologies and network protocols. Among these efforts, Graph theory plays an important role in protocol design and topology development. In this dissertation, we discuss graph theory based network design to enhance scalability and efficiency, and we provide applications to Wireless Sensor Networks (WSNs). Borel Cayley Graphs …

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Performance-Optimized Detection, Tracking And Modeling Of Physical Phenomena In Distributed Sensing Environments, Anurag Umbarkar Dec 2014

Performance-Optimized Detection, Tracking And Modeling Of Physical Phenomena In Distributed Sensing Environments, Anurag Umbarkar

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Cyber Physical Systems (CPS) are distributed systems-of-systems that perform reliable data acquisition in order to build efficient data models. Data models are mathematical expressions that describe the attributes of the observed environments. These models can be used for monitoring, tracking and predicting the dynamics of the physical phenomena. Also, data models aid in formulating decision-making procedures under resource constraints. Data model construction in CPS is challenging because the dynamics of physical environments are hard to track in real-time through a distributed sensing network with limited bandwidth and local memory. Therefore, the limited resources must be optimally utilized to boost performance …

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