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Articles 31 - 60 of 151
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The Teapots In The Tempest: Ceramics And Military Order At 18th Century Fort Stanwix, Elizabeth Scholz
The Teapots In The Tempest: Ceramics And Military Order At 18th Century Fort Stanwix, Elizabeth Scholz
Dissertations, Theses, and Masters Projects
Historically, there has been significant interest in examining pre-contact and historic sites of conflict. Recent studies in historic conflict archaeology have contributed to scholars’ understanding of military sites, specific battles, and sites of sieges and encampments. Archaeological excavations at the 18th century Fort Stanwix in Rome, New York have uncovered a rich assemblage that has facilitated the reconstruction of the fort; however, it is a careful analyses of the artifacts recovered during this process that can help scholars explore life at the fort. Integrating archaeological, historical, and documentary evidence, this paper analyzes the spatial and typological distribution of ceramics at …
“Sugary Mixed-Plate”: Landscape Of Power And Separation On 20th-Century Hawaiian Sugar Plantations, Joshua Timsing Maka'ala Gastilo
“Sugary Mixed-Plate”: Landscape Of Power And Separation On 20th-Century Hawaiian Sugar Plantations, Joshua Timsing Maka'ala Gastilo
Dissertations, Theses, and Masters Projects
Archaeology in the Hawaiian Islands predominantly focuses on pre-contact and immediate post-contact contexts, while largely ignoring post-1870 phenomena. The scarcity of studies examining these settings points out the rich opportunities for investigating dynamics that influenced Hawaiian sugar plantation laborer perceptions of power, authority, and class relations on 20th century Hawaiian plantations. Part of the Hawaiian sugar planters’ strategy to dominate the political governance of Hawaiʻi and the social dynamics of the plantations was the establishment of racial hierarchies. Planters reinforced such hierarchies by promoting divisions and segregation and by establishing places of power in the form of managers’ and luna …
The Impact Of Surface Normals On Appearance, Kathleen Dorothy Moore
The Impact Of Surface Normals On Appearance, Kathleen Dorothy Moore
Dissertations, Theses, and Masters Projects
The appearance of an object is the result of complex light interaction with the object. Beyond the basic interplay between incident light and the object's material, a multitude of physical events occur between this illumination and the microgeometry at the point of incidence, and also beneath the surface. A given object, made as smooth and opaque as possible, will have a completely different appearance if either one of these attributes - amount of surface mesostructure (small-scale surface orientation) or translucency - is altered. Indeed, while they are not always readily perceptible, the small-scale features of an object are as important …
Enhancing The Sensing Capabilities Of Mobile And Embedded Systems, Daniel George Graham
Enhancing The Sensing Capabilities Of Mobile And Embedded Systems, Daniel George Graham
Dissertations, Theses, and Masters Projects
In this work, we aim to develop new sensors and sensing platforms that facilitate the development of new mobile and embedded devices. Mobile and embedded devices have become an integral part of our everyday lives and the sensing capabilities of these devices have improved throughout the years. Developing new and innovative sensors and sensing platforms will provide the building blocks for developing new sensing systems. In an effort to facilitate these innovations we have developed two new in-air sonar sensors and a new reconfigurable sensing platform. The first in-air sonar sensor is designed for ranging applications and uses the phone's …
Neurometric Profiling Of Autism Spectrum Disorder Using The Brief Neurometric Battery: A Novel Eeg Based Task, Leigh Catherine Gayle
Neurometric Profiling Of Autism Spectrum Disorder Using The Brief Neurometric Battery: A Novel Eeg Based Task, Leigh Catherine Gayle
Dissertations, Theses, and Masters Projects
Autism spectrum disorder is a pervasive developmental disorder characterized by heterogeneous deficits in social communication and interaction, as well as repetitive behaviors and restricted interests. Due to the dramatic increase in prevalence, a major theme in contemporary research has been the identification of biomarkers for ASD that can shed light on etiological factors, facilitate diagnosis and serve as markers for tracking the efficacy of behavioral and pharmacological treatments. Electroencephalography (EEG) metrics, such as event-related potentials (ERPs), resting state oscillatory activity (OA), and resting state complexity (multiscale entropy), are well-suited for the measurement of such biomarkers. Due to the complexity and …
Muskogee Internationalism In An Age Of Revolution, 1763-1818, James L. Hill
Muskogee Internationalism In An Age Of Revolution, 1763-1818, James L. Hill
Dissertations, Theses, and Masters Projects
This dissertation reevaluates the consequences of the American Revolution by examining how indigenous peoples preserved their role as regional powers in the decades following the birth of the United States. Focusing on the Creek Indians of the present-day southeastern United States, I demonstrate that they maintained ties with Britons, Spaniards, and other Native peoples, employing these connections to their advantage. Creeks created borderlands that connected their societies with those of the British and Spanish Caribbean. The Atlantic and Gulf Coasts of Florida and their surrounding waters became zones of encounter and exchange between Native peoples, British wreckers from the Bahamas, …
Protecting Web Contents Against Persistent Crawlers, Shengye Wan
Protecting Web Contents Against Persistent Crawlers, Shengye Wan
Dissertations, Theses, and Masters Projects
Web crawlers have been developed for several malicious purposes like downloading server data without permission from website administrator. Armored stealthy crawlers are evolving against new anti-crawler mechanisms in the arms race between the crawler developers and crawler defenders. In this paper, we develop a new anti-crawler mechanism called PathMarker to detect and constrain crawlers that crawl content of servers stealthy and persistently. The basic idea is to add a marker to each web page URL and then encrypt the URL and marker. By using the URL path and user information contained in the marker as the novel features of machine …
Putin' On For Da Lou: Hip Hop's Response To Racism In St. Louis, Travis Terrell Harris
Putin' On For Da Lou: Hip Hop's Response To Racism In St. Louis, Travis Terrell Harris
Dissertations, Theses, and Masters Projects
The brutal slaying of Michael Brown on August 9, 2014 by Police officer Darren Wilson is part of an endemic system of institutional racism against Blacks in St. Louis, Missouri. This system takes place in racialized spaces that entail disparate health care, failing schools, commercial redlining, an unjust justice system and several additional oppressive forces. I am seeking to understand the ways in which Hip Hop respond to these systems of oppression. I am interested in Hip Hop’s response because Hip Hoppers are enduring racism. Further, Hip Hop’s representation in popular culture draws attention to misogyny, drugs, violence and the …
Solving Problems Of The Standard Model Through Scale Invariance, Dark Matter, Inflation And Flavor Symmetry, Raymundo Alberto Ramos
Solving Problems Of The Standard Model Through Scale Invariance, Dark Matter, Inflation And Flavor Symmetry, Raymundo Alberto Ramos
Dissertations, Theses, and Masters Projects
Through beyond standard model formulations we are able to suggest solutions to some of the current shortcomings of the standard model. In this thesis we focus in particular on inflation, the hierarchy of fermion masses, scale invariant extensions and dark matter candidates. First we present a model of hybrid natural inflation based on the discrete group S_3, the smallest non-Abelian group. The S_3 potential has an accidental symmetry whose breaking results in a pseudo-Goldstone boson with the appropriate potential for a slow-rolling inflaton. The hybrid adjective comes from the fact that inflation is ended by additional scalar fields interacting with …
Supporting Evolution And Maintenance Of Android Apps, Mario Linares-Vasquez
Supporting Evolution And Maintenance Of Android Apps, Mario Linares-Vasquez
Dissertations, Theses, and Masters Projects
Mobile developers and testers face a number of emerging challenges. These include rapid platform evolution and API instability; issues in bug reporting and reproduction involving complex multitouch gestures; platform fragmentation; the impact of reviews and ratings on the success of their apps; management of crowd-sourced requirements; continuous pressure from the market for frequent releases; lack of effective and usable testing tools; and limited computational resources for handheld devices. Traditional and contemporary methods in software evolution and maintenance were not designed for these types of challenges; therefore, a set of studies and a new toolbox of techniques for mobile development are …
Impacts Of Invasive Phragmites Australis On Diamondback Terrapin Nesting, Cassandra Cook
Impacts Of Invasive Phragmites Australis On Diamondback Terrapin Nesting, Cassandra Cook
Dissertations, Theses, and Masters Projects
The diamondback terrapin (Malaclemys terrapin) is a species of turtle found exclusively in brackish water habitats. Terrapins are currently facing population threats including by-catch mortality in crab pots, predation, and habitat loss. The expansion of the exotic, invasive reed Phragmites australis is causing widespread structural and functional changes to coastal ecosystems throughout North America, which could negatively impact the nesting success of female terrapins by invading preferred nesting habitats. I examined the extent to which Phragmites affects nesting of a breeding population of diamondback terrapins at Fisherman Island National Wildlife Refuge on the eastern shore of Virginia, where Phragmites has …
Cabinet Of Monkies: Dancing Politics In Anglo Culture, From Jacobite To Jacobin And Royalist To Republican, Amy Stallings
Cabinet Of Monkies: Dancing Politics In Anglo Culture, From Jacobite To Jacobin And Royalist To Republican, Amy Stallings
Dissertations, Theses, and Masters Projects
Dance has long been known to play a significant role in the social lives of men and women in colonial British America. What historians have largely failed to note is the integral nature of dance, in particular the longways English country form, to the realm of politics and the formation of national identity. From the earliest days of its dissemination in print, English country dance served a political purpose. In 1651, under Oliver Cromwell’s dour Protectorate government, Royalists like publisher John Playford used dance as a subtle form of resistance. Urging the public to remember the monarchy fondly and to …
Compton Scattering Polarimetry For The Determination Of The Proton’S Weak Charge Through Measurements Of The Parity-Violating Asymmetry Of 1h(E,E')P, Juan Carlos Cornejo
Compton Scattering Polarimetry For The Determination Of The Proton’S Weak Charge Through Measurements Of The Parity-Violating Asymmetry Of 1h(E,E')P, Juan Carlos Cornejo
Dissertations, Theses, and Masters Projects
The Standard Model has been a theory with the greatest success in describing the fundamental interactions of particles. as of the writing of this dissertation, the Standard Model has not been shown to make a false prediction. However, the limitations of the Standard Model have long been suspected by its lack of a description of gravity, nor dark matter. its largest challenge to date, has been the observation of neutrino oscillations, and the implication that they may not be massless, as required by the Standard Model. The growing consensus is that the Standard Model is simply a lower energy effective …
Enhancing Mobile Device System Using Information From Users And Upper Layers, Dung Nguyen Tien
Enhancing Mobile Device System Using Information From Users And Upper Layers, Dung Nguyen Tien
Dissertations, Theses, and Masters Projects
Despite the rapid hardware upgrades, a common complaint among smartphone owners is the poor battery life. to many users, being required to charge the smartphone after a single day of moderate usage is unacceptable. Moreover, current smartphones suffer various unpredictable delays during operation, e.g., when launching an app, leading to poor user experience. In this dissertation, we provide solutions that enhance systems on portable devices using information obtained from their users and upper layers on the I/O path. First, we provide an experimental study on how storage I/O path upper layers affect power levels in smartphones, and introduce energy-efficient approaches …
Neutrino Flux Prediction For The Numi Beamline, Leonidas Aliaga Soplin
Neutrino Flux Prediction For The Numi Beamline, Leonidas Aliaga Soplin
Dissertations, Theses, and Masters Projects
The determination of the neutrino flux in any conventional neutrino beam presents a challenge for the current and future short and long baseline neutrino experiments. The uncertainties associated with the production and attenuation of the hadrons in the beamline materials along with those associated with the beam optics have a big effect in the flux spectrum knowledge. For experiments like MINERvA, understanding the flux is crucial since it enters directly into every neutrino-nucleus cross-section measurements. The foundation of this work is predicting the neutrino flux at MINERvA using dedicated measurements of hadron production in hadron-nucleus collisions and incorporating in-situ MINERvA …
Slate Pencils?: Education Of Free And Enslaved African American Children At The Bray School, Williamsburg, Virginia, 1760-1774, Valerie Susan Scura Trovato
Slate Pencils?: Education Of Free And Enslaved African American Children At The Bray School, Williamsburg, Virginia, 1760-1774, Valerie Susan Scura Trovato
Dissertations, Theses, and Masters Projects
There is a dearth of literature on the archaeology of childhood. Historical archaeology, by its unique nature as a discipline, can use a combination of written documents, the archaeological record, and oral histories to interpret past lives. Historical documents and correspondence of the Associates of the Late Reverend Dr. Thomas Bray attest to the establishment of The Bray School, a school created for free and enslaved African American children in eighteenth-century Williamsburg, Virginia. Appointed schoolmistress Mrs. Ann Wager played a significant role in what the children were being taught. An abundance of slate pencil fragments found on the Bray School …
Managing Micro Vms In Amazon Ec2, Jiawei Wen
Managing Micro Vms In Amazon Ec2, Jiawei Wen
Dissertations, Theses, and Masters Projects
Micro instances (t1.micro) are the class of Amazon EC2 virtual machines (VMs) offering the lowest operational costs for applications with short bursts in their CPU requirements. as processing proceeds, EC2 throttles CPU capacity of micro instances in a complex, unpredictable, manner. This thesis aims at making micro instances more predictable and efficient to use. First, we present a characterization of EC2 micro instances that evaluates the complex interactions between cost, performance, idleness and CPU throttling. Next, we define adaptive algorithms to manage CPU consumption by learning the workload characteristics at runtime and by injecting idleness to diminish host-level throttling. Experimental …
Turbulent Particle Transport In H-Mode Plasmas On Diii-D, Xin Wang
Turbulent Particle Transport In H-Mode Plasmas On Diii-D, Xin Wang
Dissertations, Theses, and Masters Projects
Particle transport is an important topic in plasma physics. It determines the density profile of a burning plasma within a tokamak – a magnetic confinement device. Microscopic turbulent particle transport is two orders of magnitude larger than other transport mechanisms for electrons and small ions. In order to confine a plasma in a tokamak with a core density that exceeds the fusion criteria, it is essential to study turbulent particle transport. This thesis investigates how different plasma parameters such as the toroidal rotation and microscopic instabilities affect turbulent particle transport in the DIII-D tokamak. First, we show how toroidal rotation …
Uncanny Objects: The Art Of Moving And Looking Human, Khanh Van Ngoc Vo
Uncanny Objects: The Art Of Moving And Looking Human, Khanh Van Ngoc Vo
Dissertations, Theses, and Masters Projects
Automata ("self-moving" machines) and reborn dolls (hyperrealistic baby dolls) individually conjure up questions of dynamic and aesthetic realism--external components of the human form as realistically represented or reproduced. as simulacra of humans in movement and appearance, they serve as sites of the uncanny exemplifying the idea in which as varying forms of the cyborg imbue them with troubling yet fantastical qualities that raises questions about our own humanness. My first essay, “Automaton: Movement and Artificial/Mechanical Life” directly addresses the characteristics that define humanness, principally the Rene Descartes mind-body dichotomy, by tracing the evolution of mechanical life, predicated as much on …
Algorithms For Large Scale Problems In Eigenvalue And Svd Computations And In Big Data Applications, Lingfei Wu
Algorithms For Large Scale Problems In Eigenvalue And Svd Computations And In Big Data Applications, Lingfei Wu
Dissertations, Theses, and Masters Projects
As ”big data” has increasing influence on our daily life and research activities, it poses significant challenges on various research areas. Some applications often demand a fast solution of large, sparse eigenvalue and singular value problems; In other applications, extracting knowledge from large-scale data requires many techniques such as statistical calculations, data mining, and high performance computing. In this dissertation, we develop efficient and robust iterative methods and software for the computation of eigenvalue and singular values. We also develop practical numerical and data mining techniques to estimate the trace of a function of a large, sparse matrix and to …
“The Improvements Made By America On The Ancient Mode”: Classicism And Nationalism In The Early American Republic, 1780-1850, Alexander Strickland
“The Improvements Made By America On The Ancient Mode”: Classicism And Nationalism In The Early American Republic, 1780-1850, Alexander Strickland
Dissertations, Theses, and Masters Projects
Classicism, an interest in the history, society, and arts of the ancient world, became a staple of American culture with the first permanent European settlements, and reached its zenith in the late eighteenth and early nineteenth centuries. The extant scholarship on early American classicism offers a wealth of information about how citizens of the nascent United States read and interpreted the sources of the ancient world. However, it has done little to address the political utility of that classicism. The first of the two studies presented here attempts to locate one possible utility of American classicism in the Federalist Papers. …
Investigating Proton Spin Structure: A Measurement Of G_2^P At Low Q^2, Melissa Ann Cummings
Investigating Proton Spin Structure: A Measurement Of G_2^P At Low Q^2, Melissa Ann Cummings
Dissertations, Theses, and Masters Projects
The $g_2^p$ collaboration performed the first measurement of the reaction $\vec{p}(\vec{e},e')X$ in the kinematic range 0.02 $ < $ Q$^2$ $ < $ 0.2 GeV$^2$ in the resonance region. Experiment E08-027 took place in Hall A at the Thomas Jefferson National Accelerator Facility from March-May of 2012. Data was taken with a longitudinally polarized electron beam, using an NH$_3$ target polarized in both parallel and perpendicular configurations. Very preliminary results for $g_1^p$ and $g_2^p$ are shown in this thesis. to extract the spin structure functions, asymmetries are calculated from data taken with a 2.2 GeV electron beam and a 5 T target field, and combined with the Bosted model proton cross section. Preliminary dilution factors and preliminary radiative corrections are included in the asymmetry analysis. Sum rules and $\chi$PT allow us to test the Burkhardtt-Cottingham (BC) sum rule and obtain the spin polarizability quantities $\gamma_0$ and $\delta_{LT}$. The BC sum rule, valid for all values of $Q^2$, says that the integral of $g_2$ over all Bjorken $x$ vanishes. The very preliminary result presented here shows the contribution to the integral from the measured kinematic region. Although the contribution from the resonance region is not consistent with the expected result of zero, an extrapolation to high and low $x$ must be included to test whether the BC sum rule is satisfied. The difficulty in $\chi$PT calculations of $\gamma_0$ and $\delta_{LT}$ is how to include the resonance contributions, particularly the $\Delta$-resonance, which dominates. Recent developments have found better agreement with neutron experimental results, however this is little proton data to compare with the calculations, particularly at low $Q^2$. The very preliminary results shown here do not show agreement with any of the current $\chi$PT predictions. However, as this is only the contribution from the measured kinematic region, it is necessary to include the extrapolation outside the resonance region to draw a stronger conclusion. Further analysis is ongoing, and preliminary results, including a cross section extracted from data instead of a model prediction, are expected within the next year.
Security Supports For Cyber-Physical System And Its Communication Networks, Zhengrui Qin
Security Supports For Cyber-Physical System And Its Communication Networks, Zhengrui Qin
Dissertations, Theses, and Masters Projects
A cyber-physical system (CPS) is a sensing and communication platform that features tight integration and combination of computation, networking, and physical processes. In such a system, embedded computers and networks monitor and control the physical processes through a feedback loop, in which physical processes affect computations and vice versa. In recent years, CPS has caught much attention in many different aspects of research, such as security and privacy. In this dissertation, we focus on supporting security in CPS and its communication networks. First, we investigate the electric power system, which is an important CPS in modern society. as crucial and …
Workload Interleaving With Performance Guarantees In Data Centers, Feng Yan
Workload Interleaving With Performance Guarantees In Data Centers, Feng Yan
Dissertations, Theses, and Masters Projects
In the era of global, large scale data centers residing in clouds, many applications and users share the same pool of resources for the purposes of reducing energy and operating costs, and of improving availability and reliability. Along with the above benefits, resource sharing also introduces performance challenges: when multiple workloads access the same resources concurrently, contention may occur and introduce delays in the performance of individual workloads. Providing performance isolation to individual workloads needs effective management methodologies. The challenges of deriving effective management methodologies lie in finding accurate, robust, compact metrics and models to drive algorithms that can meet …
Investigating The Relationship Between Event-Related Potentials And Response Kinematics, Kenneth Juston Osborne
Investigating The Relationship Between Event-Related Potentials And Response Kinematics, Kenneth Juston Osborne
Dissertations, Theses, and Masters Projects
Movement is one of the most important functions of our nervous system. Recent research has shown that cognitive and perceptual functions ranging from our perception of others’ emotions to the planning of goal-directed behaviors depends critically on brain areas once thought to be primarily motor in nature. Given the important role our motor system plays in understanding and interacting with the world around us, it is surprising that the majority of cognitive neuroscience research using electroencephalogram (EEG) has focused primarily on perception and cognition irrespective of its relationship(s) to the execution of movement. One possible explanation for this is that …
Security And Privacy For Ubiquitous Mobile Devices, Edmund Novak
Security And Privacy For Ubiquitous Mobile Devices, Edmund Novak
Dissertations, Theses, and Masters Projects
We live in a world where mobile devices are already ubiquitous. It is estimated that in the United States approximately two thirds of adults own a smartphone, and that for many, these devices are their primary method of accessing the Internet. World wide, it is estimated that in May of 2014 there were 6.9 billion mobile cellular subscriptions, almost as much as the world population. of these 6.9 billion, approximately 1 billion are smart devices, which are concentrated in the developed world. In the developing world, users are moving from feature phones to smart devices as a result of lower …
The Politics Of Empire: The United States And The Global Structure Of Imperialism In The Early Twenty-First Century, Edward P. Hunt
The Politics Of Empire: The United States And The Global Structure Of Imperialism In The Early Twenty-First Century, Edward P. Hunt
Dissertations, Theses, and Masters Projects
In the field of diplomatic history, scholars have debated how the United States has played an imperial role in the world. Although diplomatic historians have presented many different interpretations, they have never agreed on the defining aspects of U.S. imperialism. My dissertation intervenes in the debate by reviewing how the United States functioned as an imperial power at the start of the twenty-first century. In my dissertation, I make use of a wide array of publicly available sources, including the public remarks of U.S. officials, the public records of the U.S. government, and the diplomatic cables published by WikiLeaks, to …
Study Of Spatial Structure Of Squeezed Vacuum Field, Mi Zhang
Study Of Spatial Structure Of Squeezed Vacuum Field, Mi Zhang
Dissertations, Theses, and Masters Projects
Squeezed states of light, with field fluctuations smaller than the coherent state fluctuations (or shot noise), are used for improving accuracy of quantum-noise limited measurements, like the detection of gravitational waves. They are also essential resources for quantum information transfer protocols. We studied a squeezed vacuum field generated in hot Rb vapor via the polarization self-rotation effect. We studied the mode structure of the squeezed field by spatially-masking the laser beam after its interaction with the Rb atomic vapor. From analysis of the data we developed a multi-mode theory to simulate the mode composition of the squeezed vacuum field. Our …
Thin Film Approaches To The Srf Cavity Problem: Fabrication And Characterization Of Superconducting Thin Films, Douglas Beringer
Thin Film Approaches To The Srf Cavity Problem: Fabrication And Characterization Of Superconducting Thin Films, Douglas Beringer
Dissertations, Theses, and Masters Projects
Superconducting Radio Frequency (SRF) cavities are responsible for the acceleration of charged particles to relativistic velocities in most modern linear accelerators, such as those employed at high-energy research facilities like Thomas Jefferson National Laboratory’s CEBAF and the LHC at CERN. Recognizing SRF as primarily a surface phenomenon enables the possibility of applying thin films to the interior surface of SRF cavities, opening a formidable tool chest of opportunities by combining and designing materials that offer greater benefit. Thus, while improvements in radio frequency cavity design and refinements in cavity processing techniques have improved accelerator performance and efficiency – 1.5 GHz …
Rhythmogenic And Premotor Functions Of Dbx1 Interneurons In The Pre-Bötzinger Complex And Reticular Formation: Modeling And Simulation Studies, Hanbing Song
Dissertations, Theses, and Masters Projects
Breathing in mammals depends on rhythms that originate from the preBötzinger complex (preBötC) of the ventral medulla and a network of brainstem and spinal premotor neurons. The rhythm-generating core of the preBötC, as well as some premotor circuits, consists of interneurons derived from Dbx1-expressing precursors but the structure and function of these networks remain incompletely understood. We previously developed a cell-specific detection and laser ablation system to interrogate respiratory network structure and function in a slice model of breathing that retains the preBötC, premotor circuits, and the respiratory related hypoglossal (XII) motor nucleus such that in spontaneously rhythmic slices, cumulative …