Digital Commons Network^™

A Novel Method For The Curing Of Metal Particle Loaded Conductive Inks And Pastes, David Adrian Roberson

Open Access Theses & Dissertations

The emerging technology of printed microelectronics involving the use of conductive inks in conjunction with standard printing techniques offers a fast and low waste method for creating microelectronics compared with standard manufacturing processes. A clear path to the creation of flexible electronics is present due to the ease of printing on flexible substrates. Moreover, creation of novel 3D structural electronics is possible via the integration of printing technologies and additive manufacturing (AM) techniques.

A key obstacle to the manufacturing of flexible and structural electronics comes from the temperature restrictions imposed by the substrates, which are typically polymeric. This hindrance has …

Low Energy Disruption Of Lipid Containing Biomass, Joaquin Rodriguez

Open Access Theses & Dissertations

Lipid containing biomass from microalgae has received recent research interest as a renewable and sustainable feedstock for biofuel production. Algae is known to offer as much as 30 times the energy density than corn based ethanol, the current world standard for biomass based liquid transportation fuels. The development of large scale systems and methods of extracting lipids from microalgae is still in the early stages of development and significant increases in efficiency and reduction in costs are necessary to substantiate algae as a feasible alternative source of fuel. Traditional conversion of algae feedstock into a refineable feedstock for biofuel can …

Arachidonic Acid Signaling In Invasive And Non-Invasive Breast Cancer Cells, Debarshi Roy

Open Access Theses & Dissertations

Breast cancer is the second largest cause of cancer-related deaths in women all over the world. Epidemiological studies suggest that the consumption of high-fat diets can promote the incidence of breast cancers in both developed and developing countries. In particular, the lipid-rich diet contains arachidonic acid (AA, a C20:4 polyunsaturated fatty acid), which has been shown to be associated with tumor formation in breast tissues. Nevertheless, the actual mechanism by which AA induces the metastatic transformation and malignancy is not well understood. The goal of my dissertation, therefore, is to identify the molecules and unravel the pathways that participate in …

Investigation Of Gas-Solid Fluidized Bed With Non-Spherical Particles, Mario Alberto Ruvalcaba

Open Access Theses & Dissertations

The number of experimental and numerical studies of multiphase flows has remarkably increased over the last several years. This research has abundant applications in energy, chemical, and conversion processes. Common use of these technologies includes catalytic cracking for petroleum refineries, fluidized bed reactors (type of chemical reactor), interface modification, and has been an important technology breakthrough in coal gasification. The present work will concentrate on the investigation and validation of gas-solid flows utilizing numerical methods. The gas-solid flows study on this research assumes the solid and gas phases as continua with averaged properties.

The fluid flow computation was achieved using …

Domestic Violence, Border Control Measures, And Its Effects On The Immigrant Population In The Border Region, Heryca Serna

Open Access Theses & Dissertations

Domestic violence is a serious issue that can be predominantly challenging for undocumented immigrants to surpass given their citizenship status in the country. Immigrant victims of domestic violence, in particular, are in a foreign country exposed to an unknown language, culture, and legal system, as well as being isolated from family, friends, or any other possible support systems. Due to these circumstances immigrant victims of domestic violence rarely leave their homes largely due to mistrust for law enforcement and service agencies. Limitations to recovery for undocumented immigrant women have substantial social and political consequences. The objective of this research is …

Assessment Of Carbon Nanoparticle Exposure On Murine Macrophage Function, Raquel M. Suro

Open Access Theses & Dissertations

There is growing concern about the potential cytotoxicity of nanoparticles. Exposure to respirable ultrafine particles (2.5uM) can adversely affect human health and have been implicated with episodes of increased respiratory diseases such as asthma and allergies. Nanoparticles are of particular interest because of their ability to penetrate into the lung and potentially elicit health effects triggering immune responses. Nanoparticles are structures and devises with length scales in the 1 to 100-nanometer range. Black carbon (BC) nanoparticles have been observed to be products of combustion, especially flame combustion and multi-walled carbon nanotubes (MWCNT) have been shown to be found in both …

Guerreras Sitiadas: Ansiedades De Género En Dos Obras Del Siglo De Oro, Daniel Alfredo Vega

Open Access Theses & Dissertations

Uno de los momentos más dramáticos de la historia de España fue la Guerra de Sucesión Castellana que tomó lugar entre 1475 y 1479. Durante ese periodo, se desató una contienda de sucesión por el trono que habí­a quedado vacante tras la muerte del rey Enrique IV. Siglo y medio más tarde, Lope de Vega y Tirso de Molina escogieron este conflicto como telón de fondo para ambientar dos obras dramáticas en las cuales se ven representadas diversas ansiedades y temas relacionados con género.

Leonard Bernstein: Conductor, Educator, Jonathan Vogan

Open Access Theses & Dissertations

The purpose of this paper is to delve into the life and work of Leonard Bernstein and his contributions to the world - more specifically - the world of music. The discussion will focus primarily on his contributions to the field of conducting as well as some of his educational endeavors. This will be achieved using biographical information and audio/visual recordings of his conducting and teaching.

Managing Internal Migration In Modern China: Regional Interests And Forced Removal, 1949-2010s, Bryan Winter

Open Access Theses & Dissertations

This thesis explores how the People's Republic of China (PRC) has attempted to halt internal migration, particularly rural-to-urban migration, in order to maintain socio-political control, and how by the mid-1980s migrant laborers from the countryside had unintentionally created conflicts between authorities from different regions of the country who were either for or against large-scale migration. With the advent of a more open market system that was created after the economic reforms began in 1978, we see that the migrants' movements exposed the differing economic situations of the wealthier coastal provinces and the poor inland ones. This, in turn, led to …

Targeting Minorities: An Inductive Exploration Of The Fbi's Impact On Social Movements (19602-1970s), Crystal Jewel Bustillos

Open Access Theses & Dissertations

This work undertakes the daunting task of examining the role of the FBI in targeting social movements which occurred during the 1960s and 1970s. It further explores the impact this targeting had on the Chicano movement by drawing comparisons between what transpired with the Chicano movement and comparing it to the African American movement. To this end, various archival data was gathered as well as primary sources and expert interviews.

Numerical Analysis Of Single Tank Thermocline Thermal Storage System For Concentrated Solar Power Plant, Samia Afrin

Open Access Theses & Dissertations

The overall efficiency of a Concentrating Solar Power (CSP) plant depends on the effectiveness of Thermal Energy Storage (TES) system. A Single tank TES system has potential to provide effective solution. In a single tank TES system, a thermocline region, which produces the temperature gradient between hot and cold storage fluid by density difference, is used. Preservation of this thermocline region in the tank during charging and discharging cycles depends on the uniformity of the velocity profile at any horizontal plane. One of the major challenges for the single tank thermocline is actually maintaining the thermocline region in the tank, …

Role Of Human Protein Disulfide Isomerase (Pdi) In The Redox Regulation Of Anthrax Receptor 2 (Antxr2), Naima Mohamed Alshrif

Open Access Theses & Dissertations

Anthrax is an acute infectious disease caused by B. anthracis, a gram-positive and spore-forming bacterium. Anthrax toxin is a tripartite AB toxin composed of a receptor binding/pore-forming moiety, protective antigen (PA), and two catalytic moieties, edema factor (EF) and lethal factor (LF). Anthrax toxin PA binds to cell-surface receptors, where it gets activated by furin, and assembles into a ring-like heptameric structure. The toxin-receptor complex is internalized into endosomes where the acidic pH triggers PA pore formation on the endosomal membrane that translocates the toxin catalytic moieties. Recent study has shown that anthrax toxin receptors play a critical role in …

Synthesis And Characterization Of Novel Pyridyl Silver (I) Lipid Complexes, Luis J. Andujo

Open Access Theses & Dissertations

Cationic surfactants are being used in many applications in industrial manufacture and medical technologies. Pyridinium salts come under the category of cationic surfactants. Surfactants have two distinct regions in their chemical structure, one of which is water-linking or hydrophilic and the other of which water-avoiding or hydrophobic. These molecules are referred to as amphiphilic or amiphipathic molecules or simply as surfactants or surface active agents. Depending on their charge the characteristics of the surface-active molecules may be anionic, cationic, zwitterionic (ampholytic) or non-ionic. These surfactants are used less for their wetting abilities than for their pronounced germicidal properties and their …

Acculturation Effects On Preference For English And Spanish-Language Tv Commercials Among Hispanic Audiences Of Mexican Descent, John Burton

Open Access Theses & Dissertations

The growth of the U.S. Hispanic population and its purchasing power over the past twenty years continues to be monitored closely by corporate interests anxious to gain market share and brand loyalty of the segment that now represents the largest minority group in the country. Marketers continue to look for competitive advantages in effectively communicating targeted messages to Hispanics in order to increase revenues and profits.

This study focused on the historically dominant mass-reach medium of television and explored concepts of acculturation theory to examine the effects of acculturation sub-dimensions on TV commercial language preference and attitudes among Hispanic audiences …

Instrumentation, Control And Torch Ignition Systems Development For Lox/Methane Propulsion Research, Jesus Betancourt-Roque

Open Access Theses & Dissertations

A liquid propulsion research facility has been developed at the Center for Space Exploration Technology Research at The University of Texas at El Paso. This facility has capabilities for producing up to 25 liters of Liquid Methane, feeding LOX/Methane propellants to 100 N class thrusters and conducting automated steady state and pulsing combustion experiments. This work describes the design, development and testing process of the Data Acquisition and Remote Control System developed to integrate an Altitude Simulation System, a Cryogenic Delivery System, and multiple rocket combustors and thrusters. A Torch Ignition System development is detailed as well as the evaluation …

A Petición Del Público, Daniel José Centeno

Open Access Theses & Dissertations

La vida tragicómica de un bolerista venezolano en la decadencia.

Correlates Of Marijuana Use In A Hispanic College Sample, Joseph Ephraim Charter

Open Access Theses & Dissertations

Currently there is a dearth of literature regarding marijuana and its correlates of use, particularly in Hispanics. Marijuana is the most widely used illicit drug, and its use has increased in recent years. This study aimed to assess correlates of marijuana use in a Hispanic college student sample. Data were collected from 549 participants from University psychology courses. Participants completed a comprehensive survey packet consisting of: demographics, marijuana use history, tobacco and alcohol use, depression, anxiety, stress, and acculturation. Descriptive analyses were used to provide a characteristic profile of Hispanic college student marijuana use. Eight percent reported past 30-day marijuana …

Mobilizing Subdominant Hiv-Specific Ctls As A Novel Vaccine Strategy, Margaret Christina Costanzo

Open Access Theses & Dissertations

To overcome the extreme antigenic diversity of HIV, there is increasing interest in developing vaccines that target CD8 T cell responses to conserved regions of the viral proteome. Understanding the immunogenic potential of these domains is therefore critical for the success of this vaccine strategy. CD8 T cell responses to conserved domains restricted by the "neutral" and highly prevalent HLA-A2 allele have not been extensively characterized. Here we describe a novel essentially invariant 10-mer epitope in HIV Gag (p2414-23, RTLNAWVKVV (RV10)) in that it is expressed by the majority HIV isolates from all clades. Here we examined the character of …

El Movimiento: A Brief Analysis Of The Role Of Core Activists In The Development Of A Unified Social Movement In Ciudad Juarez, Mexico, Luis Diaz

Open Access Theses & Dissertations

This thesis attempts to solve the question of why, despite the efforts of many social activists, there is not a unified social movement in Ciudad Juárez, México. My hypothesis is that social activists who are able to distinguish between a collective project and a personal project are more likely to create a successful social movement than those who tie their public identity with their personal identity. The reason seems to be that individuals who do not make this distinction are not able or willing to create networks beyond their ideologies, as well as beyond their personal direct influence and control, …

This Is The Art Form: Examining Concept Albums' Methods Of Constructing Meaning In The Digital Age, Mario Alonzo Dozal

Open Access Theses & Dissertations

This study examined how the communicative characteristics of concept albums (music albums that center on a specific theme) have been adapted from a traditional physical form to exist in the digital age. Using three rock concept albums, this study examined how three different formats (vinyl, audio compact disc, and digital download) of the same concept album communicated the overall theme of the album to listeners, and also examined the advantages and disadvantages of each format. Additionally, using discursive analysis, this study sought to expand the academic literature on concept albums by examining the role that supplementary material plays in helping …

Androgyny And Musical Identity: Glitz, Glamour, And Everything In Between, Tanya Yvette Flores

Open Access Theses & Dissertations

Discourse of androgyny and how it functions and how it is constructed will be central to analyzing how it is utilized in popular music and how artists, particularly androgynous artists, use it to complicate their expression of identities. Androgyny is described as a mixing of both male and female genders, where there can be distinct lack of coherent gender identification. Androgyny has been revealed as an identity that neither men nor women are born with, but embody through time. It is important to illustrate a growing recognition of androgynous artists to offer us an opportunity to glimpse the spectacular evolvement …

The Use Of Humor In The Classroom: Exploring Effects On Teacher-Student Immediacy And Student Learning, Francisco Antonio Galindo

Open Access Theses & Dissertations

The field of education is constantly evolving; however, the goal of bridging the gap between teacher and student relationships remains the same. The focus of pedagogical theories is to inform and orient educators on how they can maximize the learning experience of their students through effective and constantly evolving teaching methods. Many studies have been conducted in regards to how educators can establish a positive learning environment while promoting solid comprehension and lasting retention of the material being taught. Among the methods being tested and practiced by educators is the use of humor (Garner, 2005) in order to achieve immediacy …

Competitive Advantage Factors And Diffusion Of Business, Michael L. Gonzales

Open Access Theses & Dissertations

This research represents two streams of study. The first measures the level of adoption for Business Intelligence (BI) and Data Warehousing (DW). The second identifies those factors that contribute to the competitive advantage offered by BI/DW. Together, these two research streams expand the body of knowledge in three ways: (1) quantifying the adoption of BI/DW in both academia and practice, (2) leveraging competitive advantage theory and existing academic research to validate those factors statistically significant to competitive advantage for BI/DW programs, and (3) providing a comprehensive view of the BI/DW space. This research extends the body of knowledge for Information …

Getting The Message Across: Message Dissemination Through The Social Media Platform As A Public Relation Tool As A Media Richness Perspective, Ana Isabel Gonzalez

Open Access Theses & Dissertations

Prior studies that evaluated social media recommended the use of social media in PR efforts. But they lacked the theoretical framework to fully evaluate the richness of the communication medium. Through Media Richness Theory, the investigator assessed the perceptions of 162 PR professionals to shed light on the richness of social media as a communication tool and, most importantly, as an effective tool for the purposes of PR. While this study revealed that social media is not a fully "rich" communication outlet, there are components that provide value to PR professionals. This study suggests that social media not simply be …

Professional Development, Teacher Learning, And National Standards : A Mixed-Method Multiple-Case Study Of The Professional Learning Experiences Of Evangelical Christian School Teachers, Vincent Montoro

Dissertations

Problem. Today’s educational environment requires teachers who understand teaching and learning, have strong content knowledge, and can make connections between life experiences and the curriculum. Teachers are expected to be continually learning to improve their practice. Professional learning is essential in this process. Research on professional development practices in various school contexts shows how teachers can improve and develop better instructional practices through a variety of learning experiences. Sadly, very little research exists on professional development practices of private Christian school teachers. This study explored professional development practices of Christian school teachers in nine evangelical Christian schools in the …

Environmental Literacy Of Seventh-Day Adventist Teachers In The Parochial Schools Of The Florida Conference Of Seventh-Day Adventists, Michael Murdoch

Dissertations

Problem. In the United States, there is an environmental literacy problem. Americans possess limited knowledge about the environment and environmental issues, and they display limited positive action regarding the environment in which they live. Moreover, there is a debate whether a Christian’s interpretation of Gen 1:28 leads either to a lower or to a higher environmental literacy. Does the Seventh-day Adventist teaching community reflect these problems? These are the problems which this dissertation seeks to help solve.

Purpose. The purpose of this study was to attempt to assess the environmental literacy of a group of teachers in Seventh-day …

Dna-Carbon Nanotubes Composites As Gene Sensors, Hugo Alarcon

Open Access Theses & Dissertations

Carbon fullerenes are unusually structured molecules with robust mechanical and electronic properties. Their versatility is astounding; envisioned applications range from field emission displays to impregnated metal composites, battery storage media, and nanoelectronic devices. The combination of simple constituency, diverse behavior, and ease of fabrication makes these materials a cornerstone topic in current research.

This work describes experiments conducted on nanotubes using Dynamic light scattering (DLS). The aim is to detect cluster formation from individual carbon nanotube (CNT) solutions using a nanotube DNA binding sequence and a secondary recognizing complementary DNA sequence to bind neighboring CNTs. Dynamic Light Scattering is an …

Social Proposals Under Rule 14a-8: A Fall-Back Remedy In An Era Of Congressional Inaction, Margaret V. Sachs

Scholarly Works

More than a decade ago, institutional investors, notably labor unions and pension plans, began using shareholder proposals as a vehicle for advancing progressive social causes. These proposals have recently garnered heightened levels of shareholder support. While even majority support for a proposal does not insure its adoption by the board of directors, appreciable (even if not majority) support can nonetheless sometimes precipitate adoption, or at least negotiation (which can lead to adoption). This Essay argues, first, that with Congress now largely dysfunctional, social proposals have acquired a whole new role—that of a company-by-company, fall-back mechanism for solving social problems that …

The Monster In The Courtroom, Sonja R. West

Scholarly Works

It is well known that Supreme Court Justices are not fans of cameras — specifically, video cameras. Despite continued pressure from the press, Congress, and the public to allow cameras into oral arguments, the Justices have steadfastly refused.

The policy arguments for allowing cameras in the courtroom focus on cameras as a means to increased transparency of judicial work. Yet these arguments tend to gloss over a significant point about the Court — it is not secretive. The Court allows several avenues of access to its oral arguments including the presence of the public and the press in the audience, …

Politics And Prosecutions, From Katherine Fite To Fatou Bensouda, Diane Marie Amann

Scholarly Works

Based on the Katherine B. Fite Lecture delivered at the 5th Annual International Humanitarian Law Dialogs in Chautauqua, New York, this essay examines the role that politics has played in the evolution of international criminal justice. It first establishes the frame of the lecture series and its relation to IntLawGrrls blog, a cosponsor of the IHL Dialogs. It then discusses the career of the series' namesake, Katherine B. Fite, a State Department lawyer who helped draft the Charter of the International Military Tribunal at Nuremberg and who was, in her own words, a "political observer" of the proceedings. The essay …