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Articles 1 - 30 of 151
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Reducing Disproportional Discipline Referrals For African American Male Students At The Elementary Level, Kelly-Robin St. John Macpherson
Reducing Disproportional Discipline Referrals For African American Male Students At The Elementary Level, Kelly-Robin St. John Macpherson
Dissertations, Theses, and Masters Projects
The National Center for Educational Statistics documents that most teachers in urban/city schools are White, female teachers. Differences in communication styles, culture and involvement can have a negative impact on the educational experiences of minority and male students. However, there are White, female teachers who can demonstrate the ability to engage their students that have helped to the reduce the disciplinary disparity in their schools. This study focuses on answering the overarching question, what dispositional characteristics/qualities, instructional methods, environmental parameters and classroom management techniques do White, female teachers perceive contribute to lower classroom disciplinary referrals for African American males in …
Voiceless In Medical School: Students With Physical Disabilities, Michael J. Donlan
Voiceless In Medical School: Students With Physical Disabilities, Michael J. Donlan
Dissertations, Theses, and Masters Projects
Students with physical disabilities are underrepresented in medical school. Individuals with physical disabilities have largely been left out the diversity movement, which has increased access to medical education for women and minority students (Steinberg, Iezzoni, Conill, & Stineman, 2010). For students with physical disabilities who are admitted, not much is known about their experiences, thus the focus of this study was to explore the medical school experiences of individuals with physical disabilities. as the theoretical framework, the social model of disability as developed by Oliver (2009) allowed for an examination of how medical students with physical disabilities experienced the medical …
A Study Of The Degree To Which School Districts In Virginia Include Legal Or Illegal Inquiries On Employment Application Forms For Teachers, Rodney Jamel Brown
A Study Of The Degree To Which School Districts In Virginia Include Legal Or Illegal Inquiries On Employment Application Forms For Teachers, Rodney Jamel Brown
Dissertations, Theses, and Masters Projects
Federal legislation on illegal pre-employment inquiries has become increasingly well known. Unfortunately, many districts may learn too late that their employment application forms for teachers do not comply with federal regulations regarding pre-employment inquiries. This study examined teacher employment application forms used by school districts in the Commonwealth of Virginia. Examination of these applications identified the information that would likely disclose an applicant’s membership in a protected class. All 132 school districts employment applications were analyzed for compliant with EEOC guidelines. Despite knowledge of Title VII, its resulting legal decisions and millions of dollars paid by employers, all but one …
Chronic Sorrow In Family Members Of Addicts: An Investigation Of Partners Of Addicts And Divorcees To Explore Chronic Sorrow As A Theoretical Understanding Of The Experiences Of Family Members Of Addicts, Victoria Grace Mclaughlin
Chronic Sorrow In Family Members Of Addicts: An Investigation Of Partners Of Addicts And Divorcees To Explore Chronic Sorrow As A Theoretical Understanding Of The Experiences Of Family Members Of Addicts, Victoria Grace Mclaughlin
Dissertations, Theses, and Masters Projects
CHRONIC SORROW IN FAMILY MEMBERS OF ADDICTS: AN INVESTIGATION OF PARTNERS OF ADDICTS AND DIVORCEES TO EXPLORE CHRONIC SORROW AS A THEORETICAL UNDERSTANDING OF THE EXPERIENCES OF FAMILY MEMBERS OF ADDICTS ABSTRACT This study attempted to examine chronic sorrow as a theoretical understanding of the negative psychological symptoms of family members of addicts (FMoAs). Partners of addicts (PoAs) (n = 94) were compared against divorcees (n = 66) for chronic sorrow and codependence. Males (n = 53) and females (n = 107) were also compared for chronic sorrow and codependence. Some hypotheses were supported, such as chronic sorrow increased as …
College, Interrupted: A Case Study Of The Mental Health Leave Process, Rachel L. Mcdonald-Schneider
College, Interrupted: A Case Study Of The Mental Health Leave Process, Rachel L. Mcdonald-Schneider
Dissertations, Theses, and Masters Projects
Students who experience a mental health crisis while enrolled in College experience an interruption to their college journey. This single site case study examined the mental health leave and reenrollment process and its impact on college student development using the lens of Nancy Schlossberg’s (2011) model of transition. This study also examined the perceptions and values of college staff as they worked to advocate for and support students who engaged in the process. Using my conceptual model of the mental health leave and reenrollment process for guidance, college personnel can use the four main transitions that occur during this process-crisis, …
High Achieving English Language Learners: The Schooling Experiences Of Former Ell Students Enrolled In Advanced High School Courses, Anthony Vladu
High Achieving English Language Learners: The Schooling Experiences Of Former Ell Students Enrolled In Advanced High School Courses, Anthony Vladu
Dissertations, Theses, and Masters Projects
With immigration at record levels, public schools are educating an increasing number of English Language Learners who are less academically successful. There is a dearth of research on academically successful former ELL students. The purpose of this study was to identify the shared schooling experiences, shared success factors, and shared inhibiting factors of former ELL students enrolled in AP and IB coursework at the high school level. This phenomenological study used structured student and teacher interviews as well as classroom observations for the generation and collection of data. Seven students participated in this study. This study found that former ELL …
Ac Zeeman Force With Ultracold Atoms, Charles Fancher
Ac Zeeman Force With Ultracold Atoms, Charles Fancher
Dissertations, Theses, and Masters Projects
Ultracold atom experiments use a gas of neutral atoms with temperatures less than 100 µK above absolute zero and offer unmatched experimental control of quantum states and coherence, which has allowed ultracold atom-based measurements to be some of the most precise to date. While ultracold atom experiments can control almost all atomic degrees of freedom, spin-dependent trapping and spatial manipulation has remained difficult if not inaccessible. We are developing a method of spin-dependent trapping and spatial manipulation for ultracold neutral atoms using the AC Zeeman force produced by a microwave magnetic near-field gradient generated by an atom chip. We measure …
Physical Properties Of Traditional And Water-Miscible Oil Paints As Assessed By Single-Sided Nmr, Nicholas Anthony Sanchez Udell
Physical Properties Of Traditional And Water-Miscible Oil Paints As Assessed By Single-Sided Nmr, Nicholas Anthony Sanchez Udell
Dissertations, Theses, and Masters Projects
Single-sided NMR has been demonstrated as a useful technique for the inexpensive and non-invasive study of cultural heritage objects, including numerous different painting and paint samples. The relatively recent invention of water-miscible oil paints – a new form of environmentally friendly oil paint that can be thinned and cleaned by water – provides a need for analysis of the physical properties of the cured paint films. Single-sided NMR offers an excellent analytical tool to study the structural effects of the emulsifying agent present in water-miscible oil paints on the paint linoxyn network by measuring the transverse (T2) relaxation times for …
An Improved Measurement Of The Muon Neutrino Charged Current Quasi-Elastic Cross-Section On Hydrocarbon At Minerva, Dun Zhang
Dissertations, Theses, and Masters Projects
Neutrino interactions in the detectors of long baseline oscillation experiments are analyzed to determine the neutrino flavor and energy spectrum, allowing the neutrino mass ordering and mixing parameters to be determined. For neutrino interactions below the pion production threshold, the dominant reaction is charged current quasi-elastic (CCQE) scattering. Oscillation experiments are made of heavy nuclei so the QE process occurs on nucleons that are embedded in the nuclear environment. Predictions of the QE cross-section suffer from significant uncertainties due to our understanding of that nuclear environment and the way it is probed by the weak interaction. I have developed a …
The Materiality Of Authority: Ornamental Objects And Negotiations Of Sovereignty In The Algonquian Middle Atlantic (A.D. 900 - 1680), Christopher Judd Shephard
The Materiality Of Authority: Ornamental Objects And Negotiations Of Sovereignty In The Algonquian Middle Atlantic (A.D. 900 - 1680), Christopher Judd Shephard
Dissertations, Theses, and Masters Projects
This dissertation investigates the emergence, development, and transformation of centralized political authority within Algonquian societies of the Late Woodland and early Colonial period (A.D. 900 – 1680) southern Middle Atlantic. Sixteenth and 17th century European accounts describe coastal Algonquian-speaking societies of modern day Maryland, Virginia, and North Carolina as organized into multi-community polities structured by hierarchical political authority, centralized decision-making and pervasive inequality. However, the hallmarks typically associated with chiefly political organization—monumental architecture, settlement hierarchies, and widespread differentiation in mortuary symbolism—are almost non-existent in the region’s archaeological record. Colonial chroniclers, however, were adamant that the objects most highly valued by …
"The Right To Think For Themselves": Native American Intellectual Sovereignty And Internationalism During The Cold War, 1950 - 1989, Lucie Kyrova
Dissertations, Theses, and Masters Projects
This project examines the intellectual discourses and ideas that underlined and shaped Native American transnational activism and indigenous global cooperation during the Cold War. It explores Native activists’ use of the political realities of the Cold War and existing concepts, such as the United Nations’ (UN) human rights agenda, as frameworks for their strategies and demands for treaty rights and sovereignty. By using existing concepts and international mechanisms, Native Americans expanded their presence on the international scene, securing a permanent place in the UN, from which they worked to redefine the meanings of individual human rights and international law to …
Algonquian Taskscapes And Changing Landscapes: Archaeobotanical Findings From Tidewater Virginia, Jessica Marie Herlich
Algonquian Taskscapes And Changing Landscapes: Archaeobotanical Findings From Tidewater Virginia, Jessica Marie Herlich
Dissertations, Theses, and Masters Projects
The historical ecology of Tidewater Virginia from the Late Archaic to Early Colonial eras (ca. 1200 BC–AD 1600) indicates human-environmental dynamics that modified the landscape and simultaneously impacted the histories of Native groups in the region. I consider Algonquian Tidewater Virginia through the perspectives of historical ecology, taskscapes (a model of the landscape interweaving space, time, and human activities [Ingold 1993, 2000]), and gendered landscapes to explore the intersections of place, labor, and time. The Middle Woodland (ca. 500 BC-AD 800) is an important time period in my discussion. During this era, the region’s archaeology suggests shifts towards more sedentary …
Studies Of Respiratory Rhythm Generation Maintained In Organotypic Slice Cultures, Wiktor Samuel Phillips
Studies Of Respiratory Rhythm Generation Maintained In Organotypic Slice Cultures, Wiktor Samuel Phillips
Dissertations, Theses, and Masters Projects
Breathing is an important rhythmic motor behavior whose underlying neural mechanisms can be studied in vitro. The study of breathing rhythms in vitro has depended upon reduced preparations of the brainstem that both retain respiratory-active neuronal populations and spontaneously generate respiratory-related motor output from cranial and spinal motor nerves. Brainstem-spinal cord en bloc preparations and transverse medullary slices of the brainstem have greatly improved the ability of researchers to experimentally access and thus characterize interneurons important in respiratory rhythmogenesis. These existing in vitro preparations are, however, not without their limitations. For example, the window of time within which experiments may …
Creolized Histories: Hybrid Literatures Of The Americas, Apostolos Rofaelas
Creolized Histories: Hybrid Literatures Of The Americas, Apostolos Rofaelas
Dissertations, Theses, and Masters Projects
This dissertation is about a hemispheric understanding of the Americas by foregrounding hybrid literatures written both by Caribbean and U.S. American authors as the space where a transnational slave past of diversity, relation, and cross-cultural influence can be revealed and discussed. I use the term hybrid because these imaginary writings engage with actual events and real-life people that have shaped the history of the Americas, the interpretation of which is re-negotiated here though both history and literature. and literatures because it is not only novels but also epic poetry and oral stories that writers resort to in order to restore …
Rethinking Privacy And Security Mechanisms In Online Social Networks, Xin Ruan
Rethinking Privacy And Security Mechanisms In Online Social Networks, Xin Ruan
Dissertations, Theses, and Masters Projects
With billions of users, Online Social Networks(OSNs) are amongst the largest scale communication applications on the Internet. OSNs enable users to easily access news from local and worldwide, as well as share information publicly and interact with friends. On the negative side, OSNs are also abused by spammers to distribute ads or malicious information, such as scams, fraud, and even manipulate public political opinions. Having achieved significant commercial success with large amount of user information, OSNs do treat the security and privacy of their users seriously and provide several mechanisms to reinforce their account security and information privacy. However, the …
Electron Neutrino Appearance In The Nova Experiment, Ji Liu
Electron Neutrino Appearance In The Nova Experiment, Ji Liu
Dissertations, Theses, and Masters Projects
The NuMI off-Axis $\nu_e$ Appearance (NO$\nu$A) experiment is a long baseline, off-axis neutrino oscillation experiment. It is designed to search for oscillations of $\nu_\mu$ to $\nu_e$ by comparing measurements of the NuMI beam composition in two detectors. These two detectors are functionally identical, nearly fully-active liquid-scintillator tracking calorimeters and located at two points along the beam line to observe the neutrinos. The Near Detector (ND), situated \unit[1]{km} away from the proton target at Fermilab, measures neutrinos prior to oscillation. Then the Far Detector (FD), located 810 km away at Ash River, Minnesota, measures the neutrinos after they have traveled and …
An Investigation Of School Counselor Understanding And Response To Help Seeking Among Second Generation Asian American Students In The Us Public School System, Sharon Chung
Dissertations, Theses, and Masters Projects
Asian Americans are a rapidly growing population in the US and have high levels of psychological distress. However, Asian Americans tend not to ask for help from mental health professionals in regards to social/emotional issues, including school counselors. Asian American students are typical in terms of their presence within the US mainstream public school system, yet they are atypical in experiencing a variety of stressors and issues such as academic pressures, language and communication difficulties with parents/guardians, acculturative stress, and many more (Chang & Smith, 2015; Mouw & Xie, 1999; Berry, 2005). Despite mental health needs and the growing relevance …
The Myth Of Unity: The Contra War, 1980–1990, Benjamin Wyatt Medina
The Myth Of Unity: The Contra War, 1980–1990, Benjamin Wyatt Medina
Dissertations, Theses, and Masters Projects
This research focuses on the anti-Sandinista forces popularly known as the "contras" who operated in Nicaragua from 1980 to 1990, in particular the Fuerza Democrática Nicaragüense (FDN), the Alianza Revolucionaria Democrática (ARDE), and the two main Atlantic Coast contra groups: MISURA (Miskito Sumu and Rama Indians of the Atlantic Coast) and MISURASATA (Miskito, Sumu, Rama, Sandinista Aslatakanta [Working Together]). This thesis looks at the different ways these contra groups viewed their conflict and explained it to national and international audiences, as well as to those within the anti-Sandinista movement. Because there was such heterogeneity within the contra movement, a comparative …
Developmental, Physiological, And Transcriptomic Analyses Of Neurons Involved In The Generation Of Mammalian Breathing, Andrew Kottick
Developmental, Physiological, And Transcriptomic Analyses Of Neurons Involved In The Generation Of Mammalian Breathing, Andrew Kottick
Dissertations, Theses, and Masters Projects
Breathing is a rhythmic motor behavior with obvious physiological importance: breathing movements are essential for respiration, which sustains homeostasis and life itself in a wide array of animals including humans and all mammals. The breathing rhythm is produced by interneurons of the brainstem preBötzinger complex (preBötC) whose progenitors express the transcription factor Dbx1. However, the cellular and synaptic neural mechanisms underlying respiratory rhythmogenesis remain unclear. The first chapter of this dissertation examines a Dbx1 transgenic mouse line often exploited to study the neural control of breathing. It emphasizes the cellular fate of progenitors that express Dbx1 at different times during …
The City At The Falls: Building Culture In Richmond, Virginia, 1730-1860, Elizabeth Cook
The City At The Falls: Building Culture In Richmond, Virginia, 1730-1860, Elizabeth Cook
Dissertations, Theses, and Masters Projects
Whether made of stone, brick, or wood, the built environment is a bricolage of materials, skills, aesthetics, and practical needs. This dissertation disassembles the colonial and antebellum cityscape of Richmond, Virginia, into its component parts in order to better understand the relationships between builders, materials, and occupational knowledge as elements of the built environment, as well as the building culture that united them. This approach challenges the historically exalted place of architects and urban planners as the primary producers of a city, and instead focuses on the contributions of previously unknown carpenters, sawyers, joiners, bricklayers, and masons. These craftsmen labored …
Matrix Results And Techniques In Quantum Information Science And Related Topics, Diane Christine Pelejo
Matrix Results And Techniques In Quantum Information Science And Related Topics, Diane Christine Pelejo
Dissertations, Theses, and Masters Projects
In this dissertation, we present several matrix-related problems and results motivated by quantum information theory. Some background material of quantum information science will be discussed in chapter 1, while chapter 7 gives a summary of results and concluding remarks. In chapter 2, we look at $2^n\times 2^n$ unitary matrices, which describe operations on a closed $n$-qubit system. We define a set of simple quantum gates, called controlled single qubit gates, and their associated operational cost. We then present a recurrence scheme to decompose a general $2^n\times 2^n$ unitary matrix to the product of no more than $2^{n-1}(2^n-1)$ single qubit gates …
The Thin Ribbon Silk Of The Brown Recluse Spider: Structure, Mechanical Behavior, And Biomimicry, Sean Robert Koebley
The Thin Ribbon Silk Of The Brown Recluse Spider: Structure, Mechanical Behavior, And Biomimicry, Sean Robert Koebley
Dissertations, Theses, and Masters Projects
Silk has enormous potential as a next-generation material: it is a biopolymer spun from protein at ambient temperature and pressure, and the best spider silks are as strong as steel and tougher than Kevlar. Because of its green production, mechanical robustness, and biocompatibility, silk has been researched for use in a range of engineering and biomedical applications. However, despite exciting recent advances in artificial silk fabrication via recombinant techniques, reserachers remain unable to fully replicate the complex assembly and hierarchical structure of native silks. Herein, we describe our morphological and mechanical characterization of a uniquely simple model silk system that …
“Killing The Cattle, Hogs, And Fowls”/Stories Of Osceola, Andrew Stephen Vickory
“Killing The Cattle, Hogs, And Fowls”/Stories Of Osceola, Andrew Stephen Vickory
Dissertations, Theses, and Masters Projects
“Killing the Cattle, Hogs, and Fowls”: Creek Indians and Domesticated Livestock, 1700-1814 During the Red Stick War of 1813-14, the Creek Indian faction known as the Red Sticks killed the majority of cattle and hogs in Creek Country. The rejection of these animals was a purposeful tactic that carried great significance for the Red Stick movement, and was closely tied to Creek discourses concerning identity, autonomy, and community organization. By the early nineteenth century, Creeks already had a century-long history of experience with livestock, and the historical trajectory of those experiences is crucial to understanding Creek actions during the Red …
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 …
Study Of Variations Of The Dynamics Of The Metal-Insulator Transition Of Thin Films Of Vanadium Dioxide With An Ultra-Fast Laser, Elizabeth Lee Radue
Study Of Variations Of The Dynamics Of The Metal-Insulator Transition Of Thin Films Of Vanadium Dioxide With An Ultra-Fast Laser, Elizabeth Lee Radue
Dissertations, Theses, and Masters Projects
Vanadium dioxide is an intensely studied material, since it goes through an insulator-metal transition at a critical temperature just above room temperature at 340~K. The dramatic change in conductivity and the easily accessible transition temperature makes it an attractive material for novel technologies. Thin films of VO2 have a reversible transition without any significant degradation in contrast, and depending on the microstructure of the films, the properties of the transition are tunable. In this work, I study the dynamics of the insulator-transition in thin films grown on different substrates using a pump-probe configuration. The energy needed to trigger the transition, …
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 …
Synthesis, Structure And Optical Memory Properties Of Copper (I) Thiocyanate Networks With Aromatic Amines, Diimines And Alkyl Sulfides, Gerardo Ayala
Synthesis, Structure And Optical Memory Properties Of Copper (I) Thiocyanate Networks With Aromatic Amines, Diimines And Alkyl Sulfides, Gerardo Ayala
Dissertations, Theses, and Masters Projects
A series of CuSCN compounds were synthesized. Ligands included the alkyl sulfides methyl sulfide (Me2S), ethyl sulfide (Et2S), isopropyl sulfide (Pri2S) and tetrahydrothiophene (THT); diimine ligands pyrazine (Pyz), 2,3-dimethylpyrazine (2,3- Me2Pyz), 2,5-dimethylpyrazine (2,5-Me2Pyz), 2-aminopyrazine (2-NH2Pyz) and 2- methoxypyrazine (2-MeOPyz); two-ring diimines quinoxaline (Qox), quinazoline (Qnz), phthalazine (Ptz); and 3-halopyridines 3-chloropyridine (3-ClPy), 3-bromopyridine (3- BrPy), 3-iodopyridine (3-IPy). Crystal structures were solved for twelve products. With the exception of one Cu(II) compound, all could be classified in the common motifs of chains, ladders or sheets. Alkyl sulfides formed either 1:2 (CuSCN)L2 1-D chains (L = Me2S, 1a and THT, 4) or 1:1 …
A Confluence Of Cultures: Complicating The Interpretation Of 17th Century Plantation Archaeology Using Data From Rich Neck Plantation, Thomas John Cuthbertson
A Confluence Of Cultures: Complicating The Interpretation Of 17th Century Plantation Archaeology Using Data From Rich Neck Plantation, Thomas John Cuthbertson
Dissertations, Theses, and Masters Projects
Though there is no shortage of 17th century plantation sites in the Chesapeake archaeology enslaved African populations is incipient, but not yetflourishing. This may be a reflection of the result of those communities’ underrepresentation in the archaeological and documentary records from that time period. Detailed analysis of archaeological sites where Africans were present can reveal the material residues of their lives, even when this material culture is inundated by European materials. This thesis marshals archaeological, historiographic, and ethnohistorical data to use the excavations at the Rich Neck Plantation as a window into the diversity of the 17th century Atlantic world. …
New South(Ern) Landscapes: Reenvisioning Tourism, Industry, And The Environment In The American South, John Barrington Matthews
New South(Ern) Landscapes: Reenvisioning Tourism, Industry, And The Environment In The American South, John Barrington Matthews
Dissertations, Theses, and Masters Projects
Commenting on two distinct bodies of visual culture, this thesis examines how the American South has been depicted in photography, advertisement, and popular media. Exploring images of the South ranging from Depression-era Virginia to present day lower Louisiana, these papers seek to better incorporate views of a region traditionally underrepresented in visual depictions of the American landscape. Underlying both projects is an interest in utilizing visual culture as a means to understand humanity’s relationship with the nonhuman world. Taking a closer look at promotional materials from the early years of Shenandoah National Park, as well as the (post)industrial/posthumanist landscapes of …
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 …