Digital Commons Network^™

Parasites Of Invasive Carp And Native Fish In The Wabash River, Justin Wilcox

Masters Theses

Although the majority of introduced non-native species fail to establish, proliferate and spread to the point of causing observable damage, there are a significant minority that achieve biological successes far beyond what they do in their native ranges. Parasites and pathogens are theorized to play an important role in determining the outcome of invasions by non-native species, both as potential mediators of the population growth of invasive species and as invasive species themselves. This study examines and compares the abundance and species richness of digestive tract helminths in native and non-native fish of the lower Wabash River, a single waterpool …

Assessment Of Adolescents' Knowledge Of Suicide Warning Signs In Their Peers, Jennifer Larson

Masters Theses

The present study examined the knowledge adolescents have about suicide warning signs. Participants included 188 students (79% female and 21% male), 18 to 20 years old, from a Midwestern University. Participants anonymously completed an online survey. Results indicated that adolescents did not show knowledge of suicide warning signs. They also did not correctly identify suicide risk levels in three scenarios. Furthermore, direct exposure to suicide was not related to adolescents' knowledge of suicide warning signs or risk factors; however, adolescents who looked up information about suicide online were better at identifying suicide warning signs. Finally, those who had a family …

Perceived Persistence Factors For African American Students At A Predominantly White Institution, Aaron D. White

Masters Theses

The purpose of this qualitative study was to determine what resources, persistence factors, and motivational factors influenced African American students matriculation at a PWI located in the Midwest. The participants in this study were six African American seniors or recent graduates of a mid-sized, four-year university in the rural Midwest. Motivation, persistence, and resources are each connected to one another and as students identified factors in each area it was evident that together they all influence the overall success, which is completing their undergraduate degree, in significant ways. The results of this study provided a personal look into areas which …

Coordination And Symbolic Convergence At The Candles Holocaust Museum And Education Center, Jessica Mcdonald

Masters Theses

Using Coordinated Management of Meaning (CMM) and Symbolic Convergence Theory (SCT), this study examines the ways in which meaning is managed between the messages of the CANDLES Holocaust Museum and Education Center and the visitors of the museum. The research shows that the museum and the museum visitors work together in order to create an overall rhetorical vision of the museum's main message, both within the museum space and beyond. Using the metaphor of conversation, this study demonstrates the three ways through which the museum and its visitors achieve the rhetorical vision: historical conversation, personal conversation, and residual conversation. In …

Perceptions Of International Orientation, Payge Schagemann-Jones

Masters Theses

Using qualitative methodology, the researcher analyzed the perspectives of students attending a mandatory Office of International Students and Scholars, sponsored orientation. One week after classes started, four international students and one observer were interviewed on their perceptions regarding the orientation. Themes such as cultural adjustment, understanding professors, prejudice and discrimination, academic advising, and structured entry were presented.

A Soldier's Home, Andrew O. Mclaughlin

Masters Theses

No abstract provided.

Teacher's Knowledge And Attitudes Regarding Grade Retention As An Intervention, Timothy G. Snodgrass

Masters Theses

Despite the research demonstrating that grade retention is ineffective for improving students' academic and social-emotional functioning, this practice continues to be used prevalently in schools. This correlational study investigated teachers' knowledge and attitudes regarding grade retention. Additionally, this study attempted to understand teachers' past retention practices based on attitudes, subjective norms, and perceived behavioral control as specified by the Theory of Planned Behavior. Participants included 129 teachers. Results showed that teachers had limited knowledge of research and positive attitudes toward retention. Retention practices for the last three years were predicted by the Theory of Planned Behavior, but these variables accounted …

Influence Of Institution Type On Self-Regulated Learning Strategies In First Generation College Students, Alex Spalding

Masters Theses

Researchers have investigated the factors related to academic success among first-generation college students (FGS), students the U.S. Government's Educational Opportunities Program defines as those with neither parent having completed a 4-year college degree by the time the student has entered college (National Center for Educational Statistics, 2005). Recent explanations of FGS' academic performance point to the complex relationships among the unique attributes that FGS bring to college, the characteristics of the academic institutions in which they are enrolled, and the use of self-regulated learning (SRL) practices in college students.

The current study explored the relationship between the institution type and …

A Strategic Communication Campaign To Build Effective Relationships, Lauren Kluge Padillo

Masters Theses

This creative thesis discusses a strategic communication campaign that will help build effective relationships with the use of several communication strategies and marketing plans. I used our department's move to a new location as an opportunity to initiate dialogue to solve communication problems that are currently an issue. A brochure was developed as a tool that can be later used for reference. The project was successful and did bridge the communication gaps. Based on the success of the project, we will continue to use the literature and make visits to our internal and external customers.

A Cost-Benefit Analysis Of Community Health Workers‘ Impact Upon The Birth Outcomes Of At-Risk Pregnant Women In Muskegon County, Edward Michael Jados

Masters Theses

The purpose of this case study was to investigate the effects of community health workers (CHWs) on at-risk pregnant women in Muskegon County through a cost-benefit analysis. CHWs are selected, trained and working in the communities from which they live. The role of the community health worker is extremely diverse, usually due to the communities and programs that they serve. Their purpose is to improve health outcomes in the communities they serve by increasing access to and coverage to basic health services and needs, notably for underserved and medically needy populations. Previous studies have showed that CHWs have a positive …

The Other In Henry Roth's Call It Sleep, Pauline Bleuse

Masters Theses

This thesis project focuses on the notion of the Other in Henry Roth's 1934 novel Call It Sleep. The novel follows David as his family moves to New York and struggles in poor areas. David's inner world is rendered through a style which is reminiscent of a modernist stream of consciousness while retaining the realism of the 1930s proletarian novel. Call It Sleep is a rich text for the study of immigration and multi-culturalism and approaching the novel through the theme of the Other allows for multiple interpretations. The first chapter uses Jacques Lacan's theories on Desire and analyzes …

Teacher's Attitudes Towards Integrating Technology: Case Studies In Saudi Arabia And The United States, Asma Mohammed Alharbi

Masters Theses

This study examines teachers' attitudes towards integrating technology in Saudi Arabia and the United States. A case study approach was used to identify several factors that challenge teachers and schools to adapt or integrate technology. And, the case study also reveals similarities and differences between the preparation and practice of teachers in Saudi Arabia and in the United States.

The data was collected through semi-structured interviews distributed to ten teachers from Saudi Arabia and the United States. These interviews were analyzed to determine teachers' attitudes in both countries and to compare and contrast these results. Findings reveal that teachers from …

Geographical, Linguistic, Social, And Experiential Demarcation: The River In Edwidge Danticat’S The Farming Of Bones, April Dawn Best

Masters Theses

This thesis is a reading of the Massacre River in Edwidge Danticat’s The Farming of Bones that takes into account the river’s role as a physical border as well as various social, linguistic, and experiential borders that are at work in the novel. The Massacre River physically divides Haiti from the Dominican Republic; it both unites and separates the two nations. This thesis examines the language and structure of the novel to make sense of the paradoxical opposing representation of the river and examines the various borders Amabelle Désir experiences and her search for belonging upon being exiled from places …

Security Analysis Of A Cyber Physical System : A Car Example, Jason Madden

Masters Theses

"Deeply embedded Cyber Physical Systems (CPS) are infrastructures that have significant cyber and physical components that interact with each other in complex ways. These interactions can violate a system's security policy, leading to the leakage of rights and unintended information flow. This thesis will explore information flow as it uses a public channel. In order to exemplify the use of the public channel, a vehicle being composed of the computer system and its operators will show how information is disclosed to an observer. The example is made up of a vehicle traveling across some terrain with an observer watching the …

Quantization Noise Analysis Of A Closed-Loop Pwm Controller That Includes Σ-Δ Modulation, Anupama Balakrishnan

Masters Theses

"Σ-Δ modulation is a popular noise shaping technique which is used to move the quantization noise out of the frequency band of interest. Recently, a number of authors have applied this technique to a pulse width modulation (PWM) controller for switching power converters. However, previous analysis has not incorporated the effects of analog-to-digital converter (ADC) resolution or feedback control on the Σ-Δ modulator. In this work, quantization due to ADC resolution and PWM resolution are analyzed, considering the effects of noise-shaping and feedback. A number of simulations have been performed to explore the impact of various design choices on output …

Comparison Of Class Ii Injection Well Area Of Review Requirements With Area Of Evaluation For Hydraulically Fractured Wells, Yashesh Jitendra Panchal

Masters Theses

"Since 2010 the US Environmental Protection Agency (EPA) has been proposing plans to study, and has now initiated research regarding the potential impact of hydraulic fracturing processes on drinking water sources. Their work refers to an 'Area of Evaluation' around a hydraulically fractured well, inferring that the wells immediately around hydraulic fractured wells should be studied, to evaluate the conditions of these wells and their potential to contaminate overlying USDWs. Class II injection wells must have a minimum 1/4 mile radius area of review to determine the condition of wells surrounding the proposed injection well. All wells within this AOR …

Robust Methods For Construction Of Global Potential Energy Surfaces, Phalgun Lolur

Masters Theses

"This thesis is about the development of robust methods for construction of global potential energy surfaces to study the spectroscopy and dynamics of molecular systems. A potential energy surface represents the electronic energy of a molecule as a function of its geometry. This is central to how chemists view molecular systems in terms of motion across a rich energy landscape where barriers separate wells corresponding to different stable structures. The range of molecular distortions defines the potential energy surface. Computing the potential energy surface of a molecule has become a fundamental operation in modern theoretical chemistry studies. The Born-Oppenheimer approximation …

Wolf Creek Dam: A Case Study Of Foundation Remediation For Dams Built On Karst Foundations, Kyla Justene Erich

Masters Theses

"Wolf Creek Dam was completed in 1952 as a 5,736-foot long and 258-foot high combination embankment-concrete gravity dam. Its storage capacity of 6 million acre feet makes it the ninth largest reservoir in the nation. The dam was built on a heavily karstified limestone foundation and began exhibiting signs of excess foundation seepage in late 1967. This led to extensive corrective work in the 1970s beneath the earthen core of the embankment to reduce underseepage. In 2006 an independent assessment by the Dam Safety Action Classification (DSAC) Peer Review Panel recommended that Wolf Creek Dam exhibited "Urgent and Compelling" foundation …

Secure Design Defects Detection And Correction, Wenquan Wang

Masters Theses

"Bad design and software defects often make source codes hard to understand and lead to maintenance difficulties. In order to detect and fix such defects, researchers have systematically investigated these issues and designed different effective algorithms to tackle the problems. However, most of these methods need source codes/models for defect detection and correction. Commercial companies, like banks, may not be willing to provide their source models due to data security. Therefore, it is a huge challenge to detect software detects by a consulting company as well as to keep source models confidential. This thesis analyze security issues in existing approaches …

Lexis In Chemical Engineering Discourse: Analyzing Style In Chemical Engineering Research Articles Through A Rhetorical Lens, David Lamar Young

Masters Theses

"This study examines the style of chemical engineering research articles to discover stylistic trends that may be applicable to authors looking to publish their own research. Rhetorical stylistic analysis was used as a research method to allow for thorough analysis of all articles in the sample. Ten research articles from the two prominent chemical engineering journals were chosen using specific criteria to constitute a sample of articles that could most accurately represent the population of chemical engineering research articles. Each article was then analyzed line by line to identify markers of chemical engineering research article style, including the following: ▬Use …

New Sensorless, Efficient Optimized And Stabilized V/F Control For Pmsm Machines, Seyed Hesam Jafari

Masters Theses

"With the rapid advances in power electronics and motor drive technologies in recent decades, permanent magnet synchronous machines (PMSM) have found extensive applications in a variety of industrial systems due to its many desirable features such as high power density, high efficiency, and high torque to current ratio, low noise, and robustness. In low dynamic applications like pumps, fans and compressors where the motor speed is nearly constant, usage of a simple control algorithm that can be implemented with least number of the costly external hardware can be highly desirable for industry. In recent published works, for low power PMSMs, …

Communication Protocols For Integrated Fiber Optic Sensor Interrogator, Tameem Ahmed Khan

Masters Theses

"Fiber optic sensors have gained rapid recognition in sensing environmental factors such as strain, stress, acoustics, pressure, temperature among emerging other sensing applications. Major advantages of fiber based systems are small size, light weight, multiplex-ability of sensors on a single fiber, and immunity to Radio Frequency (RF) interference. However, single most major disadvantage of such technology is that traditionally the interrogation systems are typically bulky and heavy lab only equipment. Embed-ability of sensors into different structures and environments requires that the whole systems (sensors + interrogator) be small, modular and portable. This thesis presents such a custom Fiber optic Sensor …

Constructing Conducted Emission Models For Integrated Circuits, Shuai Jin

Masters Theses

"Conducted emissions, noise conducted out of integrated circuit pins, play an important role in determining the system level EMC performance. Characterizing conducted emissions from ICs is investigated and the corresponding noise models are developed in this thesis. Both simulation IBIS and measurement based methods for noise-model construction are studied. The constructed noise source model for a test IC is applied in system-level simulations and the calculated far field radiation is validated with measurements. The agreement in the simulated and measured results demonstrates the effectiveness of the constructed model for characterizing the conducted emissions from an IC I/O pin"--Abstract, page iii.

Technical Modeling And Control System Development Of Hybrid Energy System Using Coal, Nuclear, Wind And Diesel, Uday Guntupalli

Masters Theses

"Addressing the growing energy concerns of the modern world is a challenging problem. Traditional carbon intensive fuel sources like coal, diesel which are instrumental in meeting today's grid demand are struggling to meet the stringent environmental regulations. Operations of independent renewable energy sources despite reducing costs are not comparable to existing costs of electricity. A sustainable approach to address these concerns is proposed in this work. A hypothetical hybrid system involving traditional fuel sources like coal, small modular nuclear reactor and renewable energy source wind is analyzed through dynamic modeling using various tools.

Various simulation tools were analyzed and the …

Development Of Marker-Based Human Motion Capture Systems For Assembly Simulation And Ergonomic Analysis, Sajeev C. Puthenveetil

Masters Theses

"In aerospace industry, the assembly operator is often exposed to potential ergonomic injuries due to awkward postures while working in confined spaces. Manually generating worker postures in simulation software for ergonomic analysis is cumbersome. This research focuses on the use of marker-based optical motion capture technology to generate human motion simulations in real-time for ergonomic analysis. To address the challenges involved in capturing human motions in a real work environment, an assembly operation was simulated in a four-walled Computer Automated Virtual Environment (CAVE) which provides an immersive 3D environment to the worker performing the assembly operation. Multiple cameras were set-up …

Systems And Image Database Resources For Uav Search And Rescue Applications, David Christopher Macke Jr.

Masters Theses

"Aerial search and rescue applications using unmanned aerial vehicles (UAVs) can incorporate image processing technologies to locate targets faster and with a higher degree of accuracy. The task of developing such systems involves the development of both hardware and software components. Examples of both hardware and software approaches in the design process for an aerial imaging system are shown for small UAV applications. This project contains resources to help facilitate the incorporation of UAV applications into educational ventures and design projects. A power supply design is done for a lightweight imaging system and a large database of aerial images is …

Dynamic Contact Analysis Of A Piezoelectrically Driven Ultrasonic Crawler-Actuator, Dwight Santiago Maness

Masters Theses

"A standing wave ultrasonic motor (SWUM) is presented in this thesis. The actuator is piezoelectrically powered and operates in the first and second bending modes to move forwards and backwards, respectively. The kinematic stability of the crawler, backed by experimental results is shown in the first paper presented in this thesis. This study demonstrates that in the absence of a preload or kinematic constraints, the crawler shows vertical stability. A full transient analysis using the finite element method is performed characterizing the speed and contact variables is conducted in the second paper. The results show that given enough time the …

Libration Point Orbits Near Small Bodies In The Elliptic Restricted Three-Body Problem, Bharat Mahajan

Masters Theses

"In this study, the feasibility of using libration point orbits to explore small solar system bodies, including asteroids and comets, is considered. A novel design for a small body mission is proposed that makes use of libration point orbits as "parking" orbits. In considering a human exploration mission to asteroids or comets, these "parking" orbits may provide benefits including a safe vantage point for staging/observation, reduced perturbation effects from the nonuniform gravitational field of the body, fewer communication blackouts, ease of guidance and control of a lander on the surface, etc. Because small solar system bodies have extremely low mass …

Sybil Detection In Vehicular Networks, Muhammad Ibrahim Almutaz

Masters Theses

"A Sybil attack is one where an adversary assumes multiple identities with the purpose of defeating an existing reputation system. When Sybil attacks are launched in vehicular networks, an added challenge in detecting malicious nodes is mobility that makes it increasingly difficult to tie a node to the location of attacks. In this thesis, we present an innovative protocol for Sybil detection in vehicular networks. Considering that vehicular networks are cyber-physical systems integrating cyber and physical components, our technique exploits well grounded results in the physical (i.e., transportation) domain to tackle the Sybil problem in the cyber domain. Compared to …

Social Cognitive Theory Vs. Social Comparison Theory: Examining The Relationship Between Social Influence And Weight Loss, Emily Grigg

Masters Theses

This qualitative study investigated the impact of social influence on weight loss, more specifically, the internal and external elements that effect response and success of those who are trying to lose weight. The research focused on three questions: (1) How great of an influence does self-efficacy have in weight loss success? (2) How great of an influence does social comparison have in weight loss success? (3) Which factor has the largest impact on weight loss: self-efficacy, peer efficacy, or positive social support, or negative social support? Data was collected by the researcher conducting semi-structured interviews. These interview were conducted with …