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Articles 3841 - 3870 of 7325
Full-Text Articles in Entire DC Network
Development Of A Flexible Fpga-Based Platform For Flight Control System Research, Robert Demott
Development Of A Flexible Fpga-Based Platform For Flight Control System Research, Robert Demott
Theses and Dissertations
This work is part of ongoing research conducted at Virginia Commonwealth University relating to unmanned aerial vehicles. The primary objective of this thesis was to develop a flexible, high-performance autopilot platform in order to facilitate research on advanced flight control algorithms. A dual FPGA-based system architecture utilizing a stacked, multi-board design was created to meet this goal. Processing tasks were split between the two FPGA devices, allowing for improved system timing and increased throughput. A combination of analog and digital filtering techniques were employed in the new system, resulting in enhanced sensor accuracy and precision compared to the previous generation …
Mother-Infant Synchrony During Infant Feeding, Barbara Reyna
Mother-Infant Synchrony During Infant Feeding, Barbara Reyna
Theses and Dissertations
MOTHER-INFANT SYNCHRONY DURING INFANT FEEDING By Barbara A. Reyna, PhD A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at Virginia Commonwealth University. Virginia Commonwealth University, 2010. Major Director: Rita H. Pickler, PhD Endowed Nursing Alumni Professor Department of Family and Community Health Nursing, School of Nursing Synchrony between a mother and her infant is fundamental to their developing relationship. Feeding is an essential activity that provides an opportunity for interaction between a mother and her infant and may lead to synchronous interaction. The purpose this study was to develop and test a …
Numerical Simulation Of Underground Solar Thermal Energy Storage, Marshall Sweet
Numerical Simulation Of Underground Solar Thermal Energy Storage, Marshall Sweet
Theses and Dissertations
The United States Department of Energy indicates that 97% of all homes in the US use fossil fuels either directly or indirectly for space heating. In 2005, space heating in residential homes was responsible for releasing approximately 502 million metric tons of carbon dioxide into the atmosphere. Meanwhile, the Sun provides the Earth with 1000 watts per square meter of power everyday. This document discusses the research of modeling a system that will capture and store solar energy during the summer for use during the following winter. Specifically, flat plate solar thermal collectors attached to the roof of a single …
A Rhetoric Of Change: Church Growth And Social Change At The Richmond Outreach Center, Rebekah Holbrook
A Rhetoric Of Change: Church Growth And Social Change At The Richmond Outreach Center, Rebekah Holbrook
Theses and Dissertations
The Richmond Outreach Center “The ROC” is an independent soulwinning megachurch in Richmond, Virginia. This thesis explores how rhetoric plays a role in the rapid growth of this urban church and considers the church’s response—rhetorically and politically—to the city’s social issues. Through a rhetorical analysis of sermons and written texts by Geronimo Aguilar, the ROC’s founder and pastor, it is concluded that Aguilar has generated a rhetoric of change that says social change must come to Richmond and that everyone, both rich and poor, are responsible for change. Aguilar galvanizes an audience to seek social change because he articulates roles …
Isolationism, Internationalism And The “Other:” The Yellow Peril, Mad Brute And Red Menace In Early To Mid Twentieth Century Pulp Magazines And Comic Books, Nathan Vernon Madison
Isolationism, Internationalism And The “Other:” The Yellow Peril, Mad Brute And Red Menace In Early To Mid Twentieth Century Pulp Magazines And Comic Books, Nathan Vernon Madison
Theses and Dissertations
This thesis’ purpose is to demonstrate, via the examination of popular youth literature (primarily pulp magazines and comic books) from the 1920s through to the 1950s, that the stories found therein drew their definitions of heroism and villainy from an overarching, nativist fear of outsiders that had existed before the Great War, but intensified afterwards. These depictions were transferred to America’s “new” enemies following both the United States’ entry into the Second World War, as well as the early stages of the Cold War. This transference of nativist imagery left behind the ethnically-based origins of such depictions, showing that racism …
An Analysis Of Ada Title I Allegations Of Workplace Discrimination As Filed With The Eeoc By Persons With Mental Illness, Jessica E. Hurley
An Analysis Of Ada Title I Allegations Of Workplace Discrimination As Filed With The Eeoc By Persons With Mental Illness, Jessica E. Hurley
Theses and Dissertations
ABSTRACT AN ANALYSIS OF ADA TITLE I ALLEGATIONS OF WORKPLACE DISCRIMINATION AS FILED WITH THE EEOC BY PERSONS WITH MENTAL ILLNESS Jessica Erin Hurley A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Health Related Sciences—Rehabilitation Leadership Virginia Commonwealth University, 2011 Dissertation Chair: Brian T. McMahon, Ph.D., CRC This study explores employment discrimination as experienced by persons with mental illness who filed allegations under Title I (the employment provisions) of the Americans with Disabilities Act (ADA) of 1990. The entire universe of employment discrimination allegations filed under Title I of the ADA …
Phytoremediation Of Copper Contaminated Waste Water Using Lemna Minor, Mark Apelt
Phytoremediation Of Copper Contaminated Waste Water Using Lemna Minor, Mark Apelt
Theses and Dissertations
The use of natural remediation methods to remove contaminants from waste water is becoming more popular. Plants have been used for several decades, yet their use for municipal waste water contaminated by heavy metals is limited to a few studies which focus on the Mercury and Chromium (Bennicelli, et.al, 2004). This study specifically attempted to determine the viability for using Lemna minor to remediate municipally generated wastewater contaminated with copper. The study used 100 ml samples of wastewater, artificially spiked with 8 mg/L of copper sulfate and seeded with approximately 100 Lemna minor fronds. Each treatment was repeated 15 times …
Colorful Musings, Kerin Mcbride
Colorful Musings, Kerin Mcbride
Theses and Dissertations
I explore the use of color and texture to create mood and drama. I typically focus on landscape images, in which I can convey a sense of whimsy, mystery, community, or solitude. I use non-naturalistic colors and stylize the objects in my paintings but they are still identifiable as landscapes. My color choices, combined with the abstracted landscapes, urges the viewer to look at the world around them in new ways. I use a variety of materials to create my work including oil, acrylics, art papers, fabrics, miscellaneous fibers, and found objects. The tools I use include brushes, painting knives, …
Printed Matter, Inc., The First Decade: 1976-1986, Claire Dixon
Printed Matter, Inc., The First Decade: 1976-1986, Claire Dixon
Theses and Dissertations
This thesis provides an account of the events of the first ten years of Printed Matter, Inc., a distribution center for artists’ books established in New York City in 1976. Included are descriptions of the individuals who formed Printed Matter’s first board, their objectives, books published by Printed Matter, and the windows installation program. This thesis also describes challenges the board members faced, including lack of organization, difficulty cultivating a broad public audience, and inadequate income. In addition, it recounts the gradual streamlining of business practices, and the realignment of goals and expectations for the genre as board members accepted …
Dual-Scale Modeling Of Two-Phase Fluid Transport In Fibrous Porous Media, Alireza Ashari
Dual-Scale Modeling Of Two-Phase Fluid Transport In Fibrous Porous Media, Alireza Ashari
Theses and Dissertations
The primary objective of this research is to develop a mathematical framework that could be used to model or predict the rate of fluid absorption and release in fibrous sheets made up of solid or porous fibers. In the first step, a two-scale two-phase modeling methodology is developed for studying fluid release from saturated/unsaturated thin fibrous media made up of solid fibers when brought in contact with a moving solid surface. Our macroscale model is based on the Richards’ equation for two-phase fluid transport in porous media. The required constitutive relationships, capillary pressure and relative permeability as functions of the …
Accessioning And Managing The Petersburg Area Art League Collection, Janelle Wilson
Accessioning And Managing The Petersburg Area Art League Collection, Janelle Wilson
Theses and Dissertations
Since the 1960s, the Petersburg Area Art League (PAAL) has obtained works of art for its permanent collection through purchases, private donations, and through the local art show, the Poplar Lawn Art Festival, later known as Artfest. Recently, however, the organization has decided to become a non-collecting institution in order to focus on its mission to promote the arts in Petersburg through gallery shows for local artists and educational programs. While PAAL’s staff members share a love of art and a dedication to the local community, they have not been trained in professional standards for handling museum collections as outlined …
One Principal's Educational Leadership In A Rural And Low-Performing Middle School In Virginia: A Case Study, Clara Lynn Fletcher Sodat
One Principal's Educational Leadership In A Rural And Low-Performing Middle School In Virginia: A Case Study, Clara Lynn Fletcher Sodat
Theses and Dissertations
This case study examined the leadership practices of one middle school principal in a low-performing rural school in Virginia. The experienced principal participant was in his first year of leadership at the school; he had led other low-performing schools to improved achievement that resulted in earning state accreditation as well as meeting federal Adequate Yearly Progress (AYP) student proficiency targets. The focus school had failed to meet AYP for five consecutive years. The qualitative research design for this study included in-depth, semi-structured interviews with teachers, the principal, the assistant principal, and the principal’s supervisor; a total of 18 interviews were …
Ethnic Identity Development Among Rural Adolescent Youth, Adam Iglesias
Ethnic Identity Development Among Rural Adolescent Youth, Adam Iglesias
Theses and Dissertations
The current study evaluated the factor analytic structure and developmental trajectory of ethnic identity, as measured by the Multigroup Ethnic Identity Measure, (MEIM) among early rural adolescents. The convergent validity of the measure for rural youth was also examined. The sample for this study was drawn from a larger longitudinal study focusing on violence prevention efforts with an early adolescent sample residing in rural Florida. The final sample size for these secondary analyses was 5,695 participants. The sample was 53 % Caucasian, 24% Latino, 15% African American, and 8% Other. The mean age of the students was 11.3 years. Data …
Utilization Of Simulation To Teach Pelvic Examination Skills To Medical Students: Implications For Medical Education, Brenda Seago
Utilization Of Simulation To Teach Pelvic Examination Skills To Medical Students: Implications For Medical Education, Brenda Seago
Theses and Dissertations
Medical education is changing. Physicians have less time for teaching clinical skills and for direct observation of medical students, due to sicker patients in the hospital, shorter hospital stays, competing demands of research and patient care, and implementation of the eighty hour work week for residents. The consumer movement increased awareness of medical errors, patient safety and quality of healthcare. Teaching the pelvic examination is ethically complex. Questions have arisen about medical students learning to conduct the pelvic examination on actual patients. This study utilizes the pelvic examination simulator and genital teaching associates (GTAs) to teach pelvic exam skills to …
The Impact Of Deployment And Psychological Well-Being On Family Relationships: A Secondary Analysis Of Air Force Community Assessment Data, Keita Franklin
The Impact Of Deployment And Psychological Well-Being On Family Relationships: A Secondary Analysis Of Air Force Community Assessment Data, Keita Franklin
Theses and Dissertations
Airmen serving in the U.S. Air Force have made significant contributions to the overall war efforts in Afghanistan and Iraq. Deployment, combat exposure, and subsequent combat-related mental health issues can have effects that extended beyond the airmen to the family. The primary aim of this study was to determine the path through which such effects occur within the context of risk and protective factors. The risk factors identified in this study were: deployment length and frequency and psychological symptomology. The construct of social support was also examined as an identified protective factor. This study examined the relationships between all of …
Do General, Community Hospitals Compete By Specializing In High Volume, High Revenue-Generating Service Lines?, Nancy J. Muller
Do General, Community Hospitals Compete By Specializing In High Volume, High Revenue-Generating Service Lines?, Nancy J. Muller
Theses and Dissertations
To determine if general, community hospitals show evidence of specializing in the nation's six highest volume, highest revenue-generating service lines, 2003-2007 data of hospitals throughout Florida, Virginia, and Nevada were analyzed using backward deletion, stepwise regression. Service lines selected for study were cardiac surgery, cardiology, invasive cardiology, orthopedics, labor and delivery, and pulmonary services. Results do show evidence of specialization, but characteristics of hospitals vary by service line. Findings suggest that the general, community hospital, traditionally a full-service provider, may be undergoing transformation including specialization. The study demonstrates the usefulness of studying specialization at the service line level.
Ink (2010-11)
Ink, 2008-
The student-run features magazine covering the fashion, art, music and culture worlds at VCU and in Richmond. Published annually in print and updated regularly online.
Characterization And Development Of A Stroke-Induced Model Of Acquired Epilepsy In Organotypic Hippocampal Slice Cultures: Role Of The Cannabinoid Cb1 Receptors In Modulation Of Neuronal Excitation And Inhibition, Julie Ziobro
Theses and Dissertations
Stroke is the most common cause of acquired epilepsy in persons 35 and older. The massive increase in extracellular glutamate during stroke causes a cascade of intracellular events that can lead to cell death or the molecular changes that initiate the development of epilepsy. In addition, many studies point to a modulatory role of the endocannabinoid system in controlling seizures. Animal models of stroke induced acquired epilepsy have been difficult to develop. Therefore, this dissertation was initiated to develop an organotypic hippocampal slice culture model of acquired epilepsy and examine the changes in distribution and function of the endogenous CB1 …
Commonwealth Times 2010-10-28 [Front Page Has 2010-11-28]
Commonwealth Times 2010-10-28 [Front Page Has 2010-11-28]
Commonwealth Times, 1969-
No abstract provided.
Searching For A Soul, Michael O'Neal
Searching For A Soul, Michael O'Neal
Theses and Dissertations
The abstract pieces I create now are part of an ongoing evolution in my work to arrive at a visual balance between rigid structure and organic movement. Initially, they were intended as a departure from representational imagery to allow for more focus on color harmonies and structural balance. After more than twenty-five years of rendering objects and things, it became too predictable and “safe” for me to take my work seriously. As it has been suggested that most abstraction derives from reality in some form, I was intrigued by those rings of light we see when closing our eyes. I …