Digital Commons Network^™

“One Day On The Red Hills Of Georgia”: The Effects Of Immigration Status On Latino Migrants’ Experience Of Discrimination, Utilization Of Public Services, And Attitudes Toward Acculturation, Mikhail Lyubansky, Paul A. Harris, William E. Baker, Cameron D. Lippard

Faculty Articles

This study documents the experiences and identities of undocumented Spanish-speaking migrants in Georgia vis-à-vis their counterparts who have legal status. Structured interviews were used to collect data from 127 adults (49 percent undocumented at their time of arrival and 38 percent undocumented at the time of data collection) regarding their experience of discrimination, utilization of services, identity preferences, mental health, and beliefs in five domains: vulnerability, injustice, distrust, superiority, and helplessness. Significant immigration status differences emerged for education, income, utilization of some city services, and a few of the belief scales. However, the documented and undocumented samples were more similar …

Evaluation And Optimization Of Bioretention Design For Nitrogen And Phosphorus Removal, Robin M. Stone

Master's Theses and Capstones

Laboratory and field investigations were conducted into the performance of modified bioretention system designs to reduce nutrient loads from stormwater runoff. Bioretention design characteristics of particular interest were filter media composition and structural configuration. A filter media admixture of raw aluminum-based water treatment residuals (WTR) in bioretention soil mix effectively adsorbed orthophosphate in laboratory tests (90-99% median removal efficiencies). WTR dewatered to 33% solids demonstrated consistently higher removal efficiencies (>99%). A bioretention system constructed in Durham, NH in 2011 includes a bioretention soil mix with raw WTR admixture (9% solids) and a structural design modeled after the UNHSC subsurface …

Energy Resolution Analysis Of A Domestic Neutron Imager, Marissa Louise Rousseau

Master's Theses and Capstones

The calibration and correction of the Neutron Spectroscope (NSPECT) time-of-flight (ToF) system are presented. This instrument is a double-scatter telescope designed to detect neutrons and gamma rays for the identification and location of radioactive materials. The ToF resolution is 0.72 ns FWHM. Results are reported for the ToF characterization using data obtained in the laboratory. An anomalous feature in the gamma-ray energy spectra measured with NSPECT neutron detectors is examined.

A design based on NSPECT is proposed for the assay of spent nuclear fuel, where portability is increased in exchange for source location capabilities. The proposed modular device is modifiable …

Researching Critical Incidents Of Transformation, Paul R. Scheele

Antioch University Dissertations & Theses

This study examined transformation within individuals in a collaborative adult learning context. Using a combination of methods—surveys and critical incident technique (CIT)—the study explored in depth the experiences of 28 subjects from a population of 100 participants in an open-enrollment workshop, the Awakening the Dreamer, Changing the Dream Symposium produced by the Pachamama Alliance. The program employs high-impact training approaches to inform participants about social injustices and environmental practices that threaten the planet, and to encourage them to act on that information. The research focused on critical incidents at or shortly after the workshop that produced significant and meaningful change …

Social Entrepreneurship And Wealth-Building Plans: Creative Strategies For Working Class Americans, Wayne R. Curtis

Antioch University Dissertations & Theses

This study investigated how the elements of social entrepreneurship with wealth-building strategies can advance the creation of wealth and serve as a mechanism for social change. This research takes a modest first step toward demystifying social entrepreneurship, better understanding the phenomenon, and exploring the relevance of wealth-building in social entrepreneurial activity. Specifically, this exploratory study used a multiple case study design to understand how existing social entrepreneurial ventures include wealth-building strategies, such as employee stock ownership plans for working class Americans. The concept of social entrepreneurship is relatively new. There is general agreement that the concept combines a passion for …

Sites Of Passage: Art As Action In Egypt And The Us-- Creating An Autoethnography Through Performance Writing, Revolution, And Social Practice, Tavia La Follette

Antioch University Dissertations & Theses

As a performance artist and arts activist I present my research project to the audience in performative writing, a postmodern research style that advocates the integration of the artist/researcher identity. In the summer of 2010, I left for Egypt to teach a performance and installation art workshop at Artist Residency Egypt, the first step of the Firefly Tunnels Project, a virtual and tangible exchange between artists in the United States and Egypt. This venture began with the awareness that the 10th anniversary of 9/11 was approaching. What I could not have foreseen were the other world events that would have …

Four Current Meter Models Compared In Strong Currents In Drake Passage, D. Randolph Watts, Maureen A. Kennelly, Kathleen A. Donohue, Karen L. Tracey, Teresa K. Chereskin, Robert A. Weller, Ivan Victoria

Graduate School of Oceanography Faculty Publications

Seven current meters representing four models on a stiffly buoyed mooring were placed for an 11-month deployment to intercompare their velocity measurements: two vector-measuring current meters (VMCMs), two Aanderaa recording current meter (RCM) 11s, two Aanderaa SEAGUARDs, and a Nortek Aquadopp. The current meters were placed 6-m apart from each other at about 4000-m depth in an area of Drake Passage expected to have strong currents, nearly independent of depth near the bottom. Two high-current events occurred in bursts of semidiurnal pulses lasting several days, one with peak speeds up to 67 cm s⁻¹ and the other above 35 …

Utilizing Cyber Espionage To Combat Terrorism, Gary Adkins

Open Access Theses & Dissertations

The world has effectively exited the Industrial Age and is firmly planted in the Information Age. Global communication at the speed of light has been a great asset to both businesses and private citizens. However, there is a dark side to the age we live in, where terrorist groups are able to communicate, plan, fund, recruit, and spread their message to the world. The relative anonymity the internet provides hinders law enforcement and security agencies in not only locating would-be terrorists but also in disrupting their operations. The internet is a loosely knit group of computers and routers and is …

Regulation Of The Glycine Transporter 1 (Glyt1) By Pkca-Dependent Ubiquitination, Susana Barrera

Open Access Theses & Dissertations

Glycine is one of the major inhibitory neurotransmitters in the central nervous system. It is implicated in the regulation of motor-sensory function such as; pain perception, reflex responses, and is essential for early development of the CNS. In addition to its inhibitory actions, it acts as an obligatory co-agonist for the activation of glutamatergic NMDARs, which are of pivotal importance in the process of learning and memory, its dysfunction leads to several neurodegenerative diseases. Two high affinity Na+/Cl- dependent transporters GlyT1 and GlyT2 tightly regulate the availability of glycine present at the synapse for the activation of NMDARs and GlyRs. …

Routes Of Compromise: Road Building And Motor Transportation In Modern Mexico, 1920-1952, Michael K. Bess

Open Access Theses & Dissertations

"Routes of Compromise" studies the creation and function of the government bureaucracy that built motor roads and highways, and the everyday impact of those roadways on public life in Mexico. It covers roughly thirty years of construction efforts from 1920 to the early 1950s as foreign and domestic actors, working at the transnational, national, state, and local levels, established a series of policy and investment programs that became the primary model for infrastructure development in Mexico during the mid-twentieth century. Road building offers a unique perspective to the study of Mexican state formation, underscoring how the national government sought to …

Low Birth Weight, Prenatal Smoking, Pest Exposure And Breastfeeding Modify The Effect Of Acculturation On Hispanic Children's Asthma, Paola Chavez Payan

Open Access Theses & Dissertations

Prior research suggests that Hispanic migrants in the U.S. experience better respiratory health than their U.S.-born counterparts; this is reflective of a Hispanic health paradox (HHP). I address the following research questions with a focus on the HHP among children in the urban US border setting of El Paso, Texas: 1) Does acculturation relate to current asthma symptoms and diagnosed asthma? 2) Does the relationship between acculturation and current asthma symptoms and diagnosed asthma persist when controlling for relevant risk factors? 3) How does acculturation modify the relationships between the risk factors and current asthma symptoms and diagnosed asthma? Data …

Lead And Associated Heavy Metal Distribution In El Paso, Texas, Ali Ragab Elkekli

Open Access Theses & Dissertations

Contamination by lead and other heavy metals is one of the most important environmental concerns of today, locally and globally. This issue has led scientists and researchers to study the effect of heavy metals and their distribution in the environment. The aim of the present research is to document the concentration and geographic distribution of heavy metals in El Paso.

The selected heavy metals in the El Paso soil are lead, cadmium, chromium, zinc, antimony and copper. The soil sample for the study was collected during a previous community lead study (RO1 ESO11367; 2001-2006). 500 superficial soils samples were collected …

The Untidy Yard, Jennifer Andrea Falcon

Open Access Theses & Dissertations

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Seismic Reflection Exploration Of Geothermal Reservoir Atnaval Air Station (Nas) Fallon, Nevada, Alay Ghebremariam Gebregiorgis

Open Access Theses & Dissertations

The Primary objective of this study is to increase geologic and tectonic understanding of the geothermal resources at the Naval Air Station (NAS) Fallon, Nevada. The seismic reflection method is employed to study faults, fractures and other tectonic structures in the subsurface in order to identify geothermal drill targets. The efficiency of geothermal systems is strongly dependent on water circulation. Discrete faults may be permeable and provide pathways for water flow depending on the fracture density. It is therefore desirable to detect and map faults and fracture zones and characterize their physical properties when evaluating a geothermal prospect.

The seismic …

Optimization Of Bioprinting Process Using Design Of Experiments (Doe) And Taguchi Method, Maria Veronica Gonzalez

Open Access Theses & Dissertations

At this time there is a need for new fabrication techniques for engineering complex biological structures related to regenerative medicine, in vitro tissue analysis, and pharmaceutical testing with the purpose of placing specific cells in specific target locations. Right now, there is no enough conventional cell seeding methods that can achieve it. In order to achieve it, bio-fabrication, which is a delivery mechanism capable of placing biomaterials, cells, and bioactive macromolecules in specific target locations, comes to play an important role in this area. Among different approaches, bioprinting is one of the most useful processes that use drop-on-demand delivery mechanisms …

Lead And Associated Heavy Metal Distribution In Ciudad Juarez, Mexico, Samia Elfituri Grimida

Open Access Theses & Dissertations

Concern over the extent and sources of heavy metals exposure has arisen worldwide since their significant effects have been discovered in the environment. There is general agreement that research is needed to examine the residual lead and its association to heavy metals contamination in soil and quantify the health hazards. This research was directed to quantify and document the geographic distribution of lead and associated heavy metals concentration in Ciudad Juarez, Mexico. Lead, cadmium, chromium, zinc, and copper were selected to analysis. The soil samples used in this research were collected during a previous Encountors Binational Community Lead Study (RO1ES …

Optimization Of Stress Wave-Based Nondestructive Methods In Identifying Deterioration In Concrete Structures, Hoda Azari

Open Access Theses & Dissertations

The transportation infrastructure across the United States is deteriorating and requires periodic inspection to predict the cost of repair and extent of maintenance activities, to remedy structural problems, and to ensure safety and serviceability. The use of nondestructive testing (NDT) methods in detecting and characterizing flaws in the infrastructure has become more common. Among different NDT methods, the stress wave-based methods, including ultrasonic surface waves (USW) and impact echo (IE) methods, are widely used to maintain concrete structures. In this dissertation, a complete literature review of seismic wave theory and wave propagation in plate like structures, and stress wave-based methods …

Evaluation Of Novel Backwashable Cartridge Filters: Efficacy And Sustainability, Michelle Brown

Open Access Theses & Dissertations

One of the important aspects of desalination pre–treatment is the removal of particles from feedwater. This is typically accomplished using a combination of gross filtration and cartridge filtration. Cartridge filters are typically single–use products, and their replacement can represent a significant portion of a desalination plant's operating budget. This research evaluated the performance of a new type of cartridge filter that is backwashable and aims to reduce the overall cost to desalination facilities and provide cleaner water. Two sets of filters were evaluated (in triplicate) with respect to particle removal efficiency and hydraulic efficiency. The initial set included four types …

Factors Associated With Consistent Condom Use Among Mixtec And Zapotec Men Who Migrate, Aldo Carrasco

Open Access Theses & Dissertations

Migration has been associated with higher incidence and prevalence of illness among those who migrate when compared to the general population. One of the main concerns when referring to illness among migrant populations is HIV and other STDs. Due to several factors that present to migrant populations they have been found at higher risk for contracting these diseases. Lack of condom use has been found to be a risk factor amongst migrant populations. This study is a secondary data analysis of a previous study performed in California, Chihuahua, and Oaxaca, with Mixtec and Zapotec migrant populations. The purpose of this …

A Block Operator Splitting Method For Heterogeneous Multiscale Poroelasticity, Paul M. Delgado

Open Access Theses & Dissertations

Traditional models of poroelastic deformation in porous media assume relatively homogeneous material properties such that macroscopic constitutive relations lead to accurate results. Many realistic applications involve heterogeneous material properties whose oscillatory nature require multiscale methods to balance accuracy and efficiency in computation.

The current study develops a multiscale method for poroelastic deformation based on a fixed point iteration based operator splitting method and a heterogeneous multiscale method using finite volume and direct stiffness methods. To characterize the convergence

of the operator splitting method, we use a numerical root finding algorithm to determine a threshold surface in a non-dimensional parameter space …

Victims Or Criminals? The Effects Of The Media On The Public Perception Of The Role Of Children In The Mexican Drug War, Stephenie Michel Falcon

Open Access Theses & Dissertations

With the evolution of war, new international norms have been created. Boys were once groomed for war, but the laws of today aim to protect children. I address the issue of the role of children as victims or criminals to the ongoing violence of the war on drugs in Mexico. I look at the different international conventions where children's rights are defined, and whether they can be held responsible for their actions during times of war. I hypothesize that the framing of media coverage affects the public perception of children involved in this conflict, in regards to their core beliefs …

Validation Of N-Myristoyltransferase As Potential Chemotherapeutic Target In Chagas Disease, Linda Herrera

Open Access Theses & Dissertations

The protozoan parasite Trypanosoma cruzi is the etiological agent of Chagas disease, a problem endemic to Central and South America. In recent years, this neglected infectious disease has become a global health concern. The only clinically available drugs for the chemotherapy of Chagas disease have important disadvantages such as, high toxicity, strain resistance and variable efficacy. Therefore, there is an urgent need for the development of new antichagasic agents. The enzyme N-myristoyltransferase (NMT) has been characterized in a range of eukaryotes, from Saccharomyces cerevisae to Homo sapiens. Moreover, NMT has been shown to be essential in protozoan parasites, including Leishmania …

Automatic Memory Management Policies For Low Power, Memory Limited, And Delay Intolerant Devices, Md Abu Jahid

Open Access Theses & Dissertations

Mobile devices such as smartphones and tablets are energy and memory limited, and implement graphical user interfaces that are intolerant of computational delays. Mobile device platforms supporting apps implemented in languages that require automatic memory man- agement, such as the Dalvik (Java) virtual machine within Google's Android, have become dominant. It is essential that automatic memory management avoid causing unacceptable interface delays while responsibly managing energy and memory resource usage. Dalvik's automatic memory management policies for heap growth and garbage collection scheduling utilize heuristics tuned to minimize memory footprint. These policies result in only marginally acceptable response times and garbage …

Traditionalism, Institutions, And Rational Bargaining In Sub-Saharan African Civil Conflict, Joseph Anthony Jastrzembski

Open Access Theses & Dissertations

When many speak of Africa, they convey a narrative that portrays a continent haunted by ethnic conflict. However many countries are both highly diverse and relatively stable, such as Botswana or Tanzania, and we find that inter-ethnic cooperation is far more common place than conflict. In this thesis I argue that cultural differences between ethnic groups are not the cause of ethnic civil war, rather, the mechanisms find their root in economics. To explain ethnic conflict on the continent, I examine the self-interested behavior of bargaining groups in society, where ethnic communities act more as an interest group and less …

Critical Parts Retrieval And Profit Maximization For Medical Sustainability Using Design For Disassembly And Modularity, Karthik Varma Manikanta Koppella

Open Access Theses & Dissertations

With rising medical expenditure and increase in medical waste, it is highly imperative to look for ways to recycle and reuse medical products. Even though the reprocessing industry has made use of optimum disassembly techniques in order to derive the maximum possible profit from each medical device, it is limited since most of the medical devices can be hard to recycle without a change in the basic design complying with life cycle goals. This study will introduce a framework which will help to combine the optimum disassembly techniques with the modularity concept in order to come up with recommendations for …

Online Support Communication Among Military Spouses, Larissa Krenzer

Open Access Theses & Dissertations

Communal Coping is characterized by the use of a shared support system to collectively manage stressors faced by individuals within a group sharing a common bond. I will argue that Communal Coping is present in the written communication between military spouses through the use of groups on Facebook during times of separation from service members. I will determine how these communities are formed within Facebook and how identities are formed within these support groups online through the use of language. I will examine unofficial military spouse support groups and FRG (Family Readiness Group) pages on Facebook and how group members …

The Threat Of Domestic Bioterrorism: Fact Or Fiction, Stacy M. Langston

Open Access Theses & Dissertations

The threat of a domestic bioterrorist attack can be a daunting issue to cover. Using the analytic technique What If? Analysis a scenario was created for a domestic bioterrorism attack in Houston, TX. Indicators were developed to determine how to mitigate and respond to the attack. Recommendations were provided following the attack that can be used to prevent future attacks that were conducted in the scenario. Having a hindsight view of an attack is the best way to prevent and respond to the attack.

"Operation Stone Garden": A Case Study Of Legitimation Of Violence And The Consequences For Mexican Immigrants In Chaparral, New Mexico, David Haller Mckenney

Open Access Theses & Dissertations

While globalization is widely theorized in terms of apolitical trans-border flows, this paper argues that the so-called "War on Terror," the wars in Iraq and Afghanistan, and the so-called "War on Drugs" have legitimated the use of violence and aggression. This includes criminalization, closure, containment and deportation directed at trans-national flows of immigrants. Immigrants have become conflated with terrorists, drugs, crime and contamination as a generalized "other," to use Simmel's terms; they are typed as suspicious and dangerous strangers. From this perspective I suggest that the rise of contemporary security regimes or "the mobility regime" that emerged well before the …

The Effect Of Co-Witness Information And Individual Differences In Cognitive Abilities On The Suggestibility Of Pre-School Children, Rachell Leanne Jones

Open Access Theses & Dissertations

Despite nearly 25 years of research, psychologists are still learning new ways in which various demographic, psychological, social, and cognitive factors contribute to child suggestibility. Numerous facets of each area have been studied independently, but as a field, it is becoming apparent that suggestibility is also affected by complex interactions between these various components (Scullin, Kanaya, & Ceci, 2002). The current study investigated several forensic interviewing techniques and psychosocial and cognitive factors that were hypothesized to influence child suggestibility. One hundred children were randomly assigned to five interview conditions after viewing a live event. The supposed statements of a co-witness …

Method Development For A Chemical And Biological Analysis Of Glucocorticoids In Wastewater, Maria Carmen Lozano

Open Access Theses & Dissertations

Glucocorticoids are a class of steroid hormones that can either be produced synthetically or naturally by the adrenal glands. The synthetic glucocorticoids are highly prescribed in the United States for their anti-inflammatory and immunosuppressive properties to treat a variety of ailments and diseases; however, these have been implicated in a number of adverse human conditions such as obesity, metabolic syndrome, immune-suppression, delayed puberty, adrenal insufficiency and Cushing Syndrome, among others. Ongoing research has shown that synthetic and natural hormones are transported to aquatic environments via mammalian excretion or wastewater effluent, and as a result, the release of glucocorticoids into the …