Digital Commons Network^™

Indirect Food Web Interactions: Sea Otter Predation Linked To Invasion Success In A Marine Fouling Community, Maggie F. Jenkins

Master's Theses

Humans have caused grave ecological and economic damage worldwide through the introduction of invasive species. Understanding the factors that influence community susceptibility to invasion are important for controlling further spread of invasive species. Predators have been found to provide biotic resistance to invasion in both terrestrial and marine systems. However, predators can also have the opposite effect, and facilitate invasion. Therefore, recovery or expansion of native predators could facilitate the spread of invasive species. Needles et al. (2015) demonstrated that the threatened southern sea otter (Enhydra lutris nereis) facilitated the invasion of an exotic bryozoan, Watersipora subatra. …

A Computational Fluid Dynamics (Cfd) Analysis Of The Aerodynamic Effects Of The Seams On A Two-Dimensional Representation Of A Soccer Ball, Allen R. Rohr

Master's Theses

Most major sports today use a dedicated ball or projectile with specific shape, size, and surface geometry, except for soccer. Over the history of the sport, the surface geometry and design stayed relatively unchanged, sewn together using 32 pentagonal and hexagonal panels. However, recent innovations in panel designs differ substantially from the traditional 32 panel ball. The effects these new designs have on the aerodynamic characteristics of the ball have remained largely unknown, even with the influx of experimental research completed in the past decade. Experimental studies have been broad in scope, analyzing an entire ball in wind tunnels or …

A Carrier-Pigeon Uas For South Pole Data Transfer, Shaun P. Wixted

Master's Theses

The assessment of feasibility of an Unmanned Aircraft System (UAS) that is specifically tailored—in performance, operating and support characteristics, and payload—to support hardware-based data transfer from South Pole Station in Antarctica to a location of high connectivity has been undertaken. Due to the specific location of the Amundsen-Scott South Pole station and competing demands from other governmental agencies, satellite connectivity requirements for data transfers cannot be met at the South Pole. In the recent decades, the advancement in UAS capabilities have overwhelming extended their operational reach in military and commercial reconnaissance and surveillance missions. This UAS has the potential to …

Study On The Pattern Recognition Enhancement For Matrix Factorizations With Automatic Relevance Determination, Hau Tao

Electronic Theses, Projects, and Dissertations

Learning the parts of objects have drawn more attentions in computer science recently, and they have been playing the important role in computer applications such as object recognition, self-driving cars, and image processing, etc… However, the existing research such as traditional non-negative matrix factorization (NMF), principal component analysis (PCA), and vector quantitation (VQ) has not been discovering the ground-truth bases which are basic components representing objects. On this thesis, I am proposed to study on pattern recognition enhancement combined non-negative matrix factorization (NMF) with automatic relevance determination (ARD). The main point of this research is to propose a new technique …

Organize Events Mobile Application, Thakshak Mani Chandra Reddy Gudimetla

Electronic Theses, Projects, and Dissertations

In a big organization there are many events organized every day. To know about the events, we typically need to check an events page, rely on flyers or on distributed pamphlets or through word of mouth. To register for an event a user now a days typically does this online which involves inputting user details. At the event, the user either signs a sheet of paper or enters credentials in a web page loaded on a tablet or other electronic device. Typically, this is a time-consuming process with many redundancies like entering user details every time the user wants to …

Population Curation In Swarms: Predicting Top Performers, Ryan W. Heller

Master's Theses

In recent years, new Artificial Intelligence technologies have mimicked examples of collective intelligence occurring in the natural world including flocks of birds, schools of fish, and swarms of bees. One company in particular, Unanimous AI, built a platform (UNU Swarm) that enables a group of humans to make decisions as a single mind by forming a real-time closed-loop feedback system for individuals. This platform has proven the ability to amplify the predictive ability of groups of humans in realms including sports, medicine, politics, finance, and entertainment. Previous research has demonstrated it is possible to further enhance knowledge accumulation within a …

Increasing Algal Productivity And Treatment Potential In Raceways Fed Clarified Municipal Wastewater, Christopher D. Pittner

Master's Theses

Two sets of triplicate pilot algal raceway ponds (1000-L, 0.30-m deep, paddle wheel mixed) were operated for 14 months at a California wastewater treatment plant to treat wastewater and generate algal-bacterial biomass as biofuel feedstock. Two experiments were run to determine the effect on biomass productivity of (1) hydraulic residence time (HRT: 2, 3, 4, or 4.5 days) and (2) feeding schedule (18 small pulses during 8 AM-4 PM [diurnal] versus 20 large pulses during 4 AM-12 AM [diel]). The target productivity was at least 20 g volatile suspended solids per m2 of pond per day. Additional output variables were …

A Novel All Wheel Drive Torque Vectoring Control System Applied To Four Wheel Independent Drive Electric Motor Vehicles Utilizing Super Twisting And Linear Quadratic Regulator Methods, Kenneth Daniel Schmutz

Master's Theses

This thesis contains the design and simulation test results for the implementation of a new all-wheel drive (AWD) torque vectoring (TV) control system. A separate algorithm using standard control methods is included in this study for a comparison. The proposed controller was designed to be applied to an AWD independent drive electric vehicle, however the main concepts can be re-purposed for other vehicle drive train configurations. The purpose of the control system is to assist the driver in achieving a desired vehicle trajectory whilst also maintaining stability and control of the vehicle. This is accomplished by measuring various real time …

Building Bridges Across Difference Through International Summer Immersion Programs: A Narrative Inquiry In Racial Identity And Social Justice Orientation, Breanne Wing Tcheng

Doctoral Dissertations

International experiential learning programs provide opportunities for young people to develop the necessary skills to succeed in and adapt to the complexity, diversity, and ever-changing landscape of the globalized workforce. There are however, several barriers that prevent students of color from accessing opportunities to be fully engaged in a global discourse – placing them at a severe disadvantage when compared to their White counterparts. While current efforts focus on increasing access for students of color, there is often little done to understand how these students experience and are impacted by these programs. The purpose of this qualitative study sought to …

College Students' Perceptions Of Policing Careers, Patrick Robert Sullivan

Master's Theses and Capstones

Police departments across the United States have had tremendous difficulties in recruiting new officers over recent years. Past research has examined factors that motivate people to become police officers but has not examined reasons why people choose not to become police officers. This study aims to identify the college students’ opinions of policing careers. This study evaluates the relationship of views, past interactions, thoughts of prestige, and the role of the media in students’ desire to enter a policing career through a survey and follow-up interviews. Survey results show no statistically significant relationship between views of police and past interactions …

Seven Decades Of Vitamin D Research In Pakistan : Too Little, Too Much Or Just Right!, Aysha Habib Khan

Department of Pathology and Laboratory Medicine

No abstract provided.

Scaffolded Discourse Within A Comprehensive Literacy Model, Kimberlee Wagner

Dissertations

Research has shown that successful models of school change have several common features: a balance of teacher autonomy and accountability, high-quality professional development, quality leadership, and the support of an outside partner. One model that has these features is the comprehensive literacy model within the Partnership of Comprehensive Literacy model. This mixed methods study examined the language of scaffolding that occurred in three settings within the model: grade level meetings, coaching and mentoring, and small group instruction. Participants in this study included the literacy coaches, interventionists and first-grade teachers at two schools within the PCL network. Three levels of scaffolding …

Trash Talk: The Effects Of Plastic Pollution On Seabirds In Narragansett Bay, Erin A. O'Neill

Pell Scholars and Senior Theses

Plastic pollution in the ocean is a global concern with more than 8 million tons of plastic dumped into our oceans every year. This policy paper assesses plastic pollution in Narragansett Bay and the negative implications it holds on local seabird populations. Also, essential background information on plastic production and throwaway culture is provided. Moreover, the biological significance of seabirds is described, highlighting the vital role such populations play in local ecosystems such as Narragansett Bay. This paper contributes research to the global issue of plastic pollution by observing declining native wildlife life populations, such as seabirds, on a local …

Relationship Between Road Network Characteristics And Traffic Safety, Hatim Sharif, Samer Dessouky

Publications

The Transportation and Capital Improvement of the City of San Antonio, Texas Department of Transportation (TxDOT) and other related agencies often make several efforts based on traffic data to improve safety at intersections, but the number of intersection crashes is still on the high side. There is no one size fits all solution for intersections and the City is often usually confronted with doing best value option analysis on different solutions to choose the least expensive yet more advancements. The goal of this project was to obtain the relationship between road network characteristics and public safety with a focus on …

Simplified Approach For Structural Evaluation Of Flexible Pavements At The Network Level, Mena Souliman, Stefan Romanoschi, Samer Dessouky

Publications

Currently, there are few available simple procedures to identify structurally weak pavement sections utilizing Falling Weight Deflectometer (FWD) data at the network level (e.g., city, state or province). A simple method is required to determine the structural condition of pavement sections that can be directly implemented and automated in current pavement databases. The objective of this research study is to develop a simple analysis method to determine the structural condition of pavement sections utilizing the currently available non-destructive testing (NDT) deflection measurement devices at the network level that can be directly implemented and automated in the database of a typical …

A Comprehensive Reliability-Based Framework For Corrosion Damage Monitoring And Repair Design Of Reinforced Concrete Structures, Homero Castaneda, Aydin Karsilaya, Ayman Okeil, Mahmoud Reda Taha

Publications

In this work, we developed a comprehensive framework for corrosion management of reinforced concrete (RC) structures. This framework includes critical steps of an effective approach to quantify the damage evolution as well as providing the timeframe for effective maintenance/repair strategies for corrosion assessment in RC structures. The framework included several activities including the use of indirect and direct inspection tools, theoretical development for damage prediction, experimental measurements and theoretical development of repair time based on reliability. The uniqueness of the framework is the integration of deterministic modeling of corrosion damage evolution by using mechanistic analysis with statistical modeling on corrosion …

The Pain In Spain: Examining Andalusia's Youth Unemployment Crisis, Bianca D. Lennon

Pell Scholars and Senior Theses

This paper examines the youth unemployment crisis in the autonomous community of Andalusia by assessing employment policies that are currently in place. Since the economic crisis nearly a decade ago, there has been very little change in the high rates of Andalusian youth unemployment, which as a whole, has left the region, the country and the European Union at risk due to a lack of inefficient policies. By utilizing anecdotal evidence paired with facts and figures released by the European Union, recommendations to adjust employment policies such as the Youth Guarantee and PRAEM are given in order to shine a …

Event Shape Variables Measured Using Multijet Final States In Proton-Proton Collisions At $$ \Sqrt{S}=13 $$ Tev, Cms Collaboration, J. G. Acosta, S. Oliveros

Faculty and Student Publications (Open Access)

No abstract provided.

Executive Power, Drone Executions, And The Due Process Rights Of American Citizens, Jonathan G. D'Errico

Fordham Law Review

Few conflicts have tested the mettle of procedural due process more than the War on Terror. Although fiery military responses have insulated the United States from another 9/11, the Obama administration’s 2011 drone execution of a U.S. citizen allegedly associated with al-Qaeda without formal charges or prosecution sparked public outrage. Judicial recognition that this nonbattlefield execution presented a plausible procedural due process claim ignited questions which continue to smolder today: What are the limits of executive war power? What constitutional privileges do American citizens truly retain in the War on Terror? What if the executive erred in its judgment and …

A Leak In The Pipeline: College In Jail From The Participants’ Perspective, Kathy Mora

Student Theses

Offering college-level coursework to people in correctional facilities has proven to be a good investment in reducing recidivism and violence, however, how incarcerated students evaluate ‘prison to college pipeline’ programs, and how they access education after release is less understood. This study is a participant-observation approach with semi-structured surveys of a college class in Rikers Island that aims to answer the question: How do incarcerate students describe their experience with college in jail and their post-release plans to continue their education? This study uses 25 surveys of persons who participated in a college program in Rikers Island. A significant theme …

Differences In Psychopathy And Associated Traits By Police Officer Rank, Rosanne Libretti

Student Theses

Most psychopathy research focuses on its manifestation in forensic populations, however these results may not generalize onto noncriminal, or “successful,” psychopaths. Lykken (1995) conjectured that socialization may enable “heroes,” like law enforcement, to utilize the interpersonal and affective aspects of psychopathy in a manner that benefits society. Previous research (Falkenbach et al., 2018a) suggests that psychopathy and its correlates differ between police recruits and individuals in the community. It is necessary to continue this work with other groups in the police force to see if the patterns found in these studies generalize to veteran officers who have worked in law …

Detection Of In Utero Cannabis Exposure By Umbilical Cord Analysis, Jiyoung Kim

Student Theses

According to 2018 National Survey on Drug Use and Health, 7.1% of pregnant women smoked marijuana in the past month in 2017. Although this prevalence is expected to increase as a growing number of states and countries are now considering legalization, there are scarce data on effects of in utero cannabis exposure. For the monitoring of fetal cannabis exposure, two methods are employed; self-report and the analysis of biological matrix. Due to inaccuracy of self-report, the analysis of neonatal matrixes such as meconium, hair, and urine is perferred. Although umbilical cord is becoming a useful objective tool to detect in …

Bumbling In The Dark: The Effect Of The Dark Triad, Online Dating, And Gender On Risky Sexual Behaviors, Rebecca Boudreau

Student Theses

The Dark Triad is used to describe three distinct yet related personality traits: psychopathy, narcissism, and Machiavellianism, which share several characteristics such as manipulation, exploitation, emotional coldness, and lack of empathy. The Dark Triad has been associated with several negative behaviors including infidelity and risky sexual behavior, however most of the current research focuses only on males high on the Dark Triad traits. The present study seeks to expand the literature by studying how the Dark Triad traits and online dating usage relate to the composite score of risky sexual behaviors. Further, we seek to examine if gender moderates this …

Construction Of Efl Teacher Educators’ Knowledge Base In A Teacher Education Program In Nicaragua, Angel María Dávila

Dissertations

AN ABSTRACT OF THE DISSERTATION The purpose of this qualitative phenomenological study was to understand and describe the sources of Nicaraguan EFL teacher educators’ knowledge base, the types of knowledge and skills that constructed their knowledge base, and the relationship of this knowledge base and classroom practices in a teacher education program at a Nicaraguan University. This study presents a literature review on the sources of knowledge and knowledge base of EFL teacher educators in the field of language teacher education. I used a purposeful sampling technique to select both the research site and the six EFL teacher educators who …

The Making Of Secular Islam In Yugoslavia And Reis Ul-Ulema Džemaludin Čaušević, Muhammed Al-Ahari

Occasional Papers on Religion in Eastern Europe

"The 1920s and 1930s was labeled the Golden Age of Bosnian Islam. Arabic, Persian, and Turkish were widely used by Bosnian Muslim scholars and there were several attempts to modernize and Europeanize Bosnian Islam. Among them were attempts to develop a separate Bosnian Muslim identity linked to the history of Muslims in the Balkans and changes in the education system for Muslims in the area that would become Yugoslavia."

Assembly And Display Of Surface Proteins In Actinomyces Oris, Sara Siegel

Dissertations and Theses (Open Access)

Bacteria are an integral part of human health and disease. In the human host, dental plaques form as a result of up to 700 individual bacterial species colonizing oral surfaces and forming a multispecies biofilm. These biofilms are the cause of prevalent human diseases such as dental caries, gingivitis, and periodontitis. The microbes present in the oral biofilm are highly spatially and temporally structured and require a primary colonizing species to adhere to host tissue. As an important primary colonizer of the oral biofilm, the actinobacterium Actinomyces oris utilizes cell wall anchored proteins and glycoconjugates to initiate adherence to host …

Investigating The Single Cell Heterogeneity And Physiological Impact Of Mistranslation, Christopher Evans

Dissertations and Theses (Open Access)

Bacterial populations grow clonal populations; however, individual cells have a variety of phenotypes. The physiological heterogeneity observed in populations has been attributed to variations in the processes of gene expression. For example, promoter expression has been shown to be heterogeneous within a population and contribute to increased stress tolerance in a subpopulation of cells. In comparison to transcription, the influence of translation on single cells is unclear. In this study, my collaborators and I have developed a dual-fluorescence reporter that allows us to measure the mistranslation rate in single cells in vivo. Using this reporter, we found that mistranslation …

A Compressed Sensing Approach To Detect Immobilized Nanoparticles Using Superparamagnetic Relaxometry, Sara Thrower

Dissertations and Theses (Open Access)

Superparamagnetic relaxometry (SPMR) is an emerging technology that leverages the unique properties of biologically targeted superparamagnetic iron oxide nanoparticles to detect cancer. The use of ultra-sensitive sensors enables SPMR to detect tumors ten times smaller than current imaging methods. Reconstructing the distribution of cancer-bound nanoparticles from SPMR measurements is challenging because the inverse problem is ill posed. Current methods of source reconstruction rely on prior knowledge of the number of clusters of bound nanoparticles and their approximate locations, which is not known in clinical applications. In this work, we present a novel reconstruction algorithm based on compressed sensing methods that …

Role Of P300 Zz Domain In Chromatin Association And Histone Acetylation, Yongming Xue

Dissertations and Theses (Open Access)

Transcription is strictly regulated by numerous factors including transcription coactivators. The p300 protein and its close paralogue CREB-binding protein (CREBBP, aka CBP) are well-known transcriptional coactivators that have intrinsic lysine acetyltransferase activity. The functions of p300/CBP largely rely on their capabilities to bind to chromatin and to acetylate the histone substrates. However, the molecular mechanisms underlying the regulation of these processes are not fully understood.

Through combination of various biochemical, biophysical and molecular approaches, we show that the ZZ-type zinc finger (ZZ) domain of p300 functions as a histone reader that specifically binds the N-terminal tail of histone H3. Crystal …

Targeting Ph Domain Proteins For Cancer Therapy, Zhi Tan

Dissertations and Theses (Open Access)

Targeted therapy has been one of the most promising treatment options for cancer during the past decade. Discoveries of potent and selective small molecule inhibitors are critical to new and promising targeted therapy. Pleckstrin Homology (PH) domain proteins are one of the biggest protein families in the human proteome. However, no drugs have been achieved to the late development stages, let alone getting to the market. Thus, a deeper understanding of this protein family is required and there is an urgent need to develop novel small molecule compounds targeting these proteins.

Studies of PH domains began around two decades ago …