Digital Commons Network^™

Our Place In The World: A New Relationship For Environmental Ethics And Law, Jedediah Purdy

Duke Law Journal

Forty years ago, at the birth of environmental law, both legal and philosophical luminaries assumed that the new field would be closely connected with environmental ethics. Instead, the two grew dramatically apart. This Article diagnoses that divorce and proposes a rapprochement. Environmental law has always grown through changes in public values; for this and other reasons, it cannot do so without ethics. Law and ethics are most relevant to each other when there are large open questions in environmental politics: lawmakers act only when some ethical clarity arises; but law can itself assist in that ethical development. This process is …

Digital Technology: The Modern Medium For The Art Classroom, Linda Sue Al-Hanna

Open Access Theses & Dissertations

Digital technology is an important tool teachers can utilize in the art classroom for the purposes of instruction, lesson planning and student interaction. The computer has been around for many years, and has been a key factor in globalization in the educational setting. More and more students are connecting with others around the world and learning with the computer in more diverse ways than ever. Digital art has been quickly expanding since `Sketchpad' was developed in the late 1960's by Ivan Sutherland. Students today have been born into a digital world and it has become imperative that teachers make the …

Integration Of Memristors With Mems For Dynamic Displacement Control, Sergio Fabian Almeida Loya

Open Access Theses & Dissertations

In recent years the demand for high-speed, lower power consumption and large-capacity non-volatile memories has increased. Promisingly the memristor can be used due to its special characteristic of having memory through resistance change. The memristor behavior is not limited to digital applications but it can be used in analog application as well including: memristors in chaotic circuits, amoeba's learning, neural synaptic emulation, reprogrammable and reconfigurable circuits, and for neuromorphic computers. On the other hand Micro Electro Mechanical Systems (MEMS) are small scale structures that can interact with the physical world due to their mechanical properties. These devices are widely used …

Interaction Of Ceo2 And Zno Nanoparticles Towards The Symbiotic Association Of Alfalfa (Medicago Sativa) And Sinorhizobium Meliloti In Soil, Susmita Bandyopadhyay

Open Access Theses & Dissertations

The production of engineered nanoparticles (ENPs) has rapidly increased due to their wide range of applications in the field of electronics, medicine, chemistry and biology. Consequently, concerns have risen about the environmental release and potential negative impact of NPs. A few reports have described the effects of TiO2 NPs and quantum dots upon nitrogen fixing bacteria. However, the understanding of the interaction of NPs in plant-microbe interface (symbiotic association), like alfalfa (Medicago sativa L.)-Sinorhizobium meliloti, is still in its infancy. Alfalfa is the world's most important forage crop. It grows in association with S. meliloti, which is very important in …

Preparation Of Cobalt/Nickel Molybdenum Sulfide Catalysts Supported By Aqueous Media Soluble Multi-Wall Carbon Nanotubes., Hassan Ahmad Bleibel

Open Access Theses & Dissertations

Multi-walled carbon nanotubes (MWCNTs) have been subjected to chemical treatment in order to introduce hydrophilic functional groups on their surfaces. These covalently bonded groups did enhance the solubility of MWCNTs in aqueous media as expected. Functionalized MWCNTs were characterized using FTIR, Raman spectroscopy, TGA, X-ray diffraction, dispersion test and TEM. Then, functionalized MWCNTs were incorporated in the hydrothermal synthesis method of transition metal sulfide catalysts (CoMo, NiMo, and Ethylenediamine-CoMo Sulfides). Catalysts were characterized using X-ray diffraction, TEM, SEM, N2 Gas adsorption-desorption, elemental analysis, and Hydrodesulfurization (HDS) reaction of dibenzothiophene (DBT). The objective was to study the functionalized MWCNTs' effect; being …

The Mediating Role Of Dietary Patterns On The Relation Between Acculturation, Psychosocial Factors, And Cardiovascular Disease Risk Factors In The U.S. - Mexico Border, Ximena Burgos

Open Access Theses & Dissertations

Chronic diseases affect both, developed and developing countries around the world. In the U.S., cardiovascular diseases (CVD) are the leading cause of death for all groups including Hispanics (Heron, 2009). Hispanics are disproportionally affected by CVD and experience risk factors at higher rates than non-Hispanic whites (Swenson, 2002). Although CVD are among the most expensive and widespread health problems, they are among the most preventable. Evidence shows that diet plays a very important role in the development of chronic diseases; current dietary changes are partially responsible for the increasing epidemic of chronic diseases worldwide. It is well established that the …

Expression And Characterization Of The Major Capsid Protein (Mcp) Of A Giant Marine Virus: Cafeteria Roenbergensis Virus, Sayan Chakraborty

Open Access Theses & Dissertations

The oceans play significant roles in maintaining the climate on Earth and providing nutrients to the whole biosphere. Oceanic microbes produce approximately half of the Earth's oxygen. It has been shown that the populations of microbial communities in oceans are largely regulated by viral infection and thus affect the marine ecosystem. Cafeteria roenbergensis Virus (CroV) is a giant marine virus with a linear, double stranded, and AT-rich DNA genome. The genome of CroV has a size of 744kb and encodes for 544 predicted genes. CroV derived its name from its host, a unicellular marine zooplankton Cafeteria roenbergensis (Cro) that is …

Urban Impact Of Dissolved Metals In The Paso Del Norte Segment Of The Rio Grande, Sumayeh Ahmad Freiwan

Open Access Theses & Dissertations

The Paso del Norte segment of the Rio Grande experiences two seasons per year; the (wet) irrigation season and the (dry) non-irrigation season. The goal of this study was to improve the understanding of occurrence and contribution of dissolved metals in this region during the non-irrigation season. The objectives of this study were to (1) evaluate the impact of anthropogenic sources of metals on the Rio Grande water quality during the non-irrigation season, and (2) estimate the metal loads carried by the flow to the downstream region of El Paso. In order to evaluate the surface water quality of the …

Reduction Of Onu Buffering For Pon/Vdsl Hybrid Access Networks, Elliott Ivan Gurrola

Open Access Theses & Dissertations

Today's growing internet traffic requires service providers to offer customers faster transmission rates. To keep up with such high transmission rates, service providers need to deploy fiber optical networks. However, due to the high cost involved in deploying the fiber media, this may not prove to be a feasible solution. Instead, service providers can deploy fiber media up to a distribution point, such as a customer's block, and continue the last few hundred feet using the already deployed legacy copper wire media.

In our study we investigate downstream/upstream transmission coordination for passive optical network (PON) / Digital Subscriber Line (DSL) …

Predictors Of Academic Success Between On-Track And Off-Track Students In A Mexican University, Jesus Francisco Hinojos

Open Access Theses & Dissertations

The main purpose of this study was to assess how predictors of quality of academic effort relate to academic success and student persistence of on-track and off-track students in a higher education institution in Northern Mexico; to investigate the relationship of pre-entry attributes,

family background and academic success as expressed by GPA among on-track, off-track and dropout students. And to examine the relationship between participants quality of effort invested in their own learning and development in six academic areas and four areas of college students' social activities.

This study utilized the College Student Experience Questionnaire (CSEQ) to determine the quality …

Arab Muslim Immigrant Women's Experiences Of Living In The United States: A Qualitative Descriptive Study, Maissa Khatib

Open Access Theses & Dissertations

Background: Over three million Arab Muslims live in the United States, and more than half are women (Nasser-McMillan, 2003). Little is known about these women in the growing and diverse Arab American Muslim population, and there is limited information available regarding their experiences of living in the U.S. Their experiences influence multiple aspects of their lives, including functioning in mainstream culture, use of resources or agencies, and the decisions they make that shape their acculturation outcome.

Purpose: To describe the experiences of Arab Muslim immigrant women living in the U.S.

Methods: This qualitative study examined the shared experiences of immigrant …

Development Of `Lick And Stick' Passive Wireless Temperature Sensor For Harsh Environment, Hasanul Karim

Open Access Theses & Dissertations

Wireless passive temperature sensors have been receiving increasing attention due to the ever-growing need of higher energy efficient and precise monitoring of temperatures in high temperature energy conversion systems such as gas turbines and coal-based power plants. Unfortunately, the harsh environment such as high temperature and corrosive atmosphere present in these systems has significantly limited the reliability and increased the cost of current solutions. Therefore, this research project presents the concept and design of a low cost, passive, and wireless temperature sensor that can withstand high temperature and harsh environment. The temperature sensor was designed following the principle of metamaterials …

The Purposeful Demonization Of Muslims And Arabs By The Mass Media, Rafael Lerma

Open Access Theses & Dissertations

The study of the mass media's affect on influencing viewers perceptions towards Muslims and Arabs. The study will deal with how the mass media through the news media, TV shows, and Hollywood film creates a negative impression of Muslims and Arabs through their media content. Cultivation Theory hypothetically explains that enough media viewing could lead viewers to see these individuals in a negative light as few positive representations of Muslims and Arabs are shown.

Experimental Study On The Fabrication Of Advanced Materials For Energy Applications Using High Energy Mechanical Milling, Ashvin Kumar Narayana Swamy

Open Access Theses & Dissertations

The reaction of aluminum (Al) powder with water has the potential for on demand hydrogen generation. Conventional Al powders, however, react with water slowly due to a highly protective oxide layer on the particle surface. Current methods for Al activation involve harmful and expensive materials. The nano-scale Al powders also remain very expensive and have problems such as a large amount of oxide on the surface. The use of aluminum in an energy generation cycle is also hindered by the fact that, although Al is the most abundant metal in the Earth's crust, its recovery from ore consumes a lot …

Genetic Diversity In Populations Of Epiphanes Chihuahuaensis (Rotifera: Monogononta) In The Northern Chihuahuan Desert, Diego E. Reyes

Open Access Theses & Dissertations

1. Cryptic speciation in zooplankton is a phenomenon that has been recently gaining much attention. This is due in part to advances in molecular techniques which help in the identification of morphologically indistinct species. Organisms that have been traditionally believed to have cosmopolitan distributions are being found to be composed of cryptic species complexes with high levels of genetic divergence among lineages.

2. Epiphanes chihuahuaensis is a member in the Epiphanes senta species complex. In a previous study by Schröder & Walsh (2007), genetic data, along with morphological and reproductive isolation data were employed to help delineate four species within …

Calibán Traduce Con Pluma De Cuervo, Agustin Abreu Cornelio

Open Access Theses & Dissertations

Calibán traduce con pluma de cuervo es un ensayema o poesayo que aborda el fenómeno de la traducción de poesí­a desde el enfoque de la deconstrucción y la teorí­a poscolonial. El propósito del mismo es transvalorar las nociones de originalidad y fidelidad --que desde siempre han orientado las reflexiones sobre la traducción literaria-- con tal de que el ejercicio de traducir sea visto como el mecanismo de transformación crí­tica de la tradición que realmente es. De este modo, se abordan las versiones que José Luis Rivas y Octavio Paz hicieron de T. S. Eliot, Derek Walcott, Fernando Pessoa y William …

Political Corruption: Accountability And Party System Institutionalization, Susan Achury

Open Access Theses & Dissertations

Providing a definition built on the agency relationship between voters and public officials, this study presents an institutional approach to the causes of political corruption. I argue that higher levels of political party institutionalization reduce political corruption. Institutionalized political party systems help to overcome collective problems among voters within democracies. By increasing levels of accountability, institutionalized political party systems alter public officials' incentives towards a cleaner exercise of the public power. Focusing on different strategies adopted by political parties, I analyze the effectiveness of the constraints imposed on public officials' corrupt behavior within democracies. On the one hand, institutionalization of …

Traducción, El Cuerpo Y La Sombra. Jane: A Murder De Maggie Nelson, Sylvia F. Aguilar Zéleny

Open Access Theses & Dissertations

Maggie Nelson publicó Jane: A Murder en 2005 y en él se reconstruye la historia en torno a Jane Mixer. Jane fue la tercera de siete ví­ctimas de un asesino en serie a finales de los años 60. Jane, además, era tí­a materna de la autora. Este libro investiga la figura de Jane sin Jane. Maggie Nelson lo escribió preguntándose ¿puede una colección de pequeños poemas lí­ricos contar la historia de un terrible asesinato? Mi premisa es: quiero traducir esta serie de pequeños poemas lí­ricos bajo la declaración de que un caso como el de Jane Mixer continúa ocurriendo en …

Determinants Of Condom Use And Hiv Prevention Among East-African Immigrants In Minnesota, Mahamud Ahmed

Open Access Theses & Dissertations

your words

The Impact Of Interpersonal Communication On Breastfeeding, Jennifer Alarcon

Open Access Theses & Dissertations

The medical community has offered a lot of evidence in support of breastfeeding which has led to many of the leading medical associations (i.e. the American Academy of Pediatrics, World Health Organization) to recommend breastfeeding infants exclusively for the first six months of life and for at least a full year, up to two years or whatever is mutually desirable to mother and child. However, in the United States, many mothers do not follow this recommendation. Research shows that instances of women being unable to breastfeed exist but are minimal. Many people have attempted to address the problem of low …

A Systematic Approach To Manage Missing Data In Pavement Management Systems, Mazin M. Al-Zou'bi

Open Access Theses & Dissertations

Pavements are an important part of the highway transportation infrastructure, accounting for the largest share of the overall investment. A tremendous amount of time and money is spent each year on the construction of new pavements, as well as on the maintenance and rehabilitation of existing pavements.

Transportation agencies use pavement management systems (PMS) for their maintenance and rehabilitation planning, programming, and budgeting. PMS are used to make decisions regarding when maintenance and rehabilitation should be applied. The systems also select what type of treatment should be applied for each pavement section in the network with clear estimations of the …

Operation New Dawn: Rhetoric Or Real Policy Change?, Josiah Thomas Barrett

Open Access Theses & Dissertations

Scholars have long explored questions concerning presidential foreign policy decision making as well as military performance in conducting operations. Studies have covered a wide variety of topics, including the organizational dynamics of the military bureaucracy, the effectiveness of military operations, how presidential rhetorical strategies influence the public agenda in foreign affairs, and, in turn, how public opinion influences presidential foreign policy decision-making. Despite these advances, there remains a notable gap in the literature with respect to the relationship between presidential foreign policy objectives and military bureaucratic responsiveness. In particular, when presidents use rhetoric to introduce key shifts in foreign policy …

A State-To-State Analysis Of Mexican Migration To The U.S., Avilia Bueno

Open Access Theses & Dissertations

The determinants of undocumented immigration flows from Mexican states to U.S. states utilizing data recently released by the Mexican consulate are analyzed. The impact of economic, demographic, and geographic factors on immigrant location choice in the year 2007 is analyzed using ordinary least squares, tobit, and two stage least squares to control for factors likely to be endogenous with immigration. The results generally support that immigrants tend to migrate towards states with higher Mexican immigrant populations, shorter distances, higher wages, and smaller populations. In addition, the relationship between undocumented immigration and economic freedom and the policy measures used to construct …

Exploring The Determinants Of Gay Rights Policies At The State Level: A Mixed Methods Approach, Daniel Elton Call

Open Access Theses & Dissertations

Much of the literature on gay rights has focused broadly on identifying the causal factors that influence general public perceptions. To date, although scholars have conducted case studies at the state-level or looked at aggregate public opinion trends and their effects at the national level, no work has empirically examined state-level gay rights trends across numerous states. This study fills that gap by assessing the key relationships on the issue of same-sex marriage at the state-level, both systemically with aggregate data and across key states. Using 2007 data from the SurveyUSA polling firm, the American Community Survey (US Census Bureau …

Improved Efficiency Of Rna Secondary Structure Prediction Using Distributed Computing, Gerardo A. Cardenas

Open Access Theses & Dissertations

The rapidly growing amounts of available biomolecular sequence data, which may represent information from small gene fragments to large complete genomes, have led to the a great need for powerful computational resources for data analysis and storage. With the decoding of the human and other genomes, RNA secondary structure prediction has become an important area of interest in biology and medicine because they help in understanding the mechanisms of many biological processes such as gene regulation and viral replication, and in designing RNA-based therapies to treat various diseases. Due to the complexity of their algorithms, many existing and upcoming computational …

Three Essays Employing Cultural Value Theories To Explain Individual And National Differences In Ict Use/Adoption And Media Utilization Among Multiple Nations, Khendum Choden

Open Access Theses & Dissertations

This study investigates the impact of values on Information Communication Use/ adoption at an individual level and at the national level among advanced and emerging economies. We employ the use of Schwartz's individual values, Schwartz's cultural values and Hofstede's cultural values to empirically demonstrate its impact on multiple information communication technologies across advanced economies while controlling for demographics, GDP, income, and pronoun drop. We also study the moderating effects of culture on a variety of task characteristics and media use.

9/11 And The War On Terror: Iraq War Narratives And The Sacrifice Model, Janette Galvan

Open Access Theses & Dissertations

What are Americans willing to sacrifice for war and during war? In the wake of the 9/11 attacks, American citizens weighed a trade-off between their security and their civil freedoms because of fear of another terrorist attack. The reasoning was that United States citizens were patriotic and in being so they were willing to sacrifice some civil liberties to win the war on terror to prevent future terrorist attacks, thereby ensuring their future safety and then, perhaps, recover the sacrificed civil freedoms. This thesis project focuses on the sacrifices Americans willingly made for and during the war on terror, sold …

School Library Acquisitions Policy: How It Impacts The Delivery Of Library Services To Middle School English Language Learners, Aurea Lourdes Galindo

Open Access Theses & Dissertations

The Del Sol Independent School District (DSISD) serves a student population totaling 64, 214 that includes a Hispanic population of eighty-two percent (DSISD, 2011). Of this total student population, 25.2 percent consists of English Language Learners (ELLs)--predominantly Spanish-speaking students (DSISD, 2011). Current DSISD library collection figures reveal that each campus library has an inordinate low number of Spanish materials. The district librarians are guided by an acquisitions policy that seemingly offers scant guidelines for acquiring books that address the information and literary needs of diverse student populations.

To this end, it is vital to examine and bring better understanding of …

The Effect Of Exogenous Leptin On Dendritic Cell Migration And Interactions With T Cells, Amanda L. Gonzales

Open Access Theses & Dissertations

Obesity is a complex, chronic disease that has reached epidemic proportions in the United States and shows no indication of receding. It is a state of chronic low-grade inflammation that is initiated by morphological changes in large accumulations of adipose tissue. Leptin is a pleiotropic hormone secreted by adipose tissue, presenting a possible link between obesity and inflammation. In this study, we assessed the effect of leptin on bone marrow-derived (BM) dendritic cells (DC) (BM-DC) function, antigen presenting cells vital for the activation of naí¯ve T cells. Previous data produced in our laboratory established that the addition of leptin to …

Shadows On The Wall, Daniel Bruce Greenhalgh

Open Access Theses & Dissertations

Thom Roth has spent his entire life in the Refuge, a secure and fundamentally hierarchical facility which protects the remnants of human civilization. Under the tutelage of Minister Trask, Thom has risen to become a primary contender for an administrative appointment, as well as secured the affections of Dee McKay, Trask's granddaughter. However, when Thom's best friends, Geoff and Scott, discover a small, secret tunnel underneath the Refuge, the three friends' learn that the foundation of their home was decidedly messier than they had been taught. On the other side of the tunnel they find another, smaller Refuge, with fewer …