Digital Commons Network^™

Native Plant Establishment Success Influenced By Centaurea Stoebe Control Method, Laurelin Marie Martin

Masters Theses

Invasive species frequently hinder restoration efforts. While the effectiveness of differing control methods are often reported, the impacts these methods have on the establishment of a native plant community are often unknown. To determine methods that effectively reduce spotted knapweed (Centaurea stoebe) while enhancing native species establishment, we tested 12 treatment combinations consisting of an initial site preparation (mowing, mowing + clopyralid, or mowing + glyphosate), with combinations of annual adult knapweed hand pulling, and/or burning. We established 48 plots and applied site preparation treatments during summer 2008, seeded 23 native forbs and grasses during spring 2009, pulled …

Inkjet Printing Of Titanium Dioxide Photoanodes For Dye Sensitized Solar Cells, Jeffrey Corbet Johnson

Masters Theses

Dye Sensitized Solar Cells (DSSC) offer advantages over semiconductor solar cells including lower costs and relaxed material purity requirements. However, DSSC solar energy conversion efficiencies are lower than many competing photovoltaic technologies. Key to DSSC performance is the incorporation of nanocrystalline metal oxides to provide a large surface area for photosensitive dye loading. Titanium dioxide (TiO2) is the predominately used metal oxide. The structure of the TiO₂ layer determines charge transfer efficiency and the level of generated photocurrent. Common practice for high performance cells is to deposit a thin, compact TiO₂ coating followed by a thicker, more porous …

Effects Of Nonylphenol On Orientation By The Crayfish Orconectes Propinquus, Kathryn J. Page

Masters Theses

Nonylphenol is a widely used surfactant subject to ethoxylation and subsists in the environment for significant amounts of time. It has industrial, agricultural, and domestic uses, and makes its way into the aquatic ecosystem despite treatment of wastewater. Detrimental effects of nonylphenol are varied, but most notably endocrine disruption has been examined. Crayfish are a crucial invertebrate in freshwater ecosystems. They are omnivorous, and occupy a key position in the trophic web as both predator and prey. To determine if nonylphenol exposure has any effect on the orientation abilities of crayfish, I acutely (1 day) and chronically (4 days) exposed …

Changes In Vascular Reactivity Of Mesenteric Arteries Following Hyperbaric Oxygen Treatment, Benjamin Matthew Hake

Masters Theses

The objective of this study was to evaluate the changes in vascular reactivity of mesenteric arteries resulting from hyperbaric oxygen treatment. It was hypothesized that hyperbaric oxygen treatment alters vascular reactivity in mesenteric arteries due to enhanced production of ATP resulting in significantly larger responses to vasoactive stimuli. All arteries were dissected from porcine mesenteries and placed in Krebs- Henseleit solution. Arteries were initially mounted in isolated organ baths and passively loaded with tensions ranging from 1 to 25 grams at odd intervals to ascertain the optimal passive tension for studying mesenteric arteries. Following a 1-hour equilibration in Krebs-Henseleit solution, …

Climate Change And Metapopulation Implications For Species Re/Introductions: A Spatial Analysis Of Suitable Habitat For The American Marten (Martes Americana) In Northern Michigan, Joshua Michael Green

Masters Theses

The American marten (Martes americana), which was extirpated from Michigan by 1939 due to logging and trapping, has cultural significance as a clan animal to Great Lakes Native American Tribes and ecological significance as a forest health indicator. Sleeping Bear Dunes National Lakeshore (SBD) is considering reintroduction, but several factors must first be considered in assessing the habitat suitability. The goals of this study were to 1) enhance an existing habitat suitability model by including additional relevant variables, 2) conduct a spatial analysis of the habitat within the study area using a metapopulation perspective and 3) incorporate climate …

Burning On The Shore Of An Unknowable Void: Nature As Mystical Reality In The Fiction Of Cormac Mccarthy, Skyler Latshaw

Masters Theses

Language, spirituality, and the natural world are all prominent themes in the novels of Cormac McCarthy. This thesis examines the relationship between the three themes, arguing that McCarthy empowers the natural world with a spiritual significance that may be experienced by humanity, but not completely understood or expressed. Man, being what Kenneth Burke describes as the “symbol-using” animal, cannot express reality through language without distorting it. Language also leads to the commodification of the natural world by allowing man to reevaluate the reality around him based on factors of his own devising. Many of McCarthy’s protagonists struggle against the rapid …

An Examination Of The Long Term Effects Of Exposure To Prescription Drugs On Infant Growth And Development, Annalisa Maurer

Masters Theses

The effects of prenatal exposure to many prescription medications are well known. However, little is known about the long term side effects early exposure to medications used to treat pain and sedate have on growth and development. This paper explores the long-term effects of postnatal exposure to prescription medication. The potential effects are applied to physical, cognitive, and social-emotional development as well as the overall health of an infant. Additionally, the options of the use of commonly used analgesics and sedatives are compared to other pain management options. Research surrounding long-term effects of early exposure to pain and generalizations/recommendations are …

Disease Ecology Of A Microsporidian Parasite And Its Effects On Mottled Sculpin, Jared Joseph Homola

Masters Theses

Infectious disease can influence organisms at all levels of ecological organization, from individuals to ecosystems. Likewise, the ecosystems where pathogens exist directly influence their success. Recent theoretical studies have tied disease prevalence to biotic factors such as genetic diversity, biodiversity, and host behavior, and abiotic factors that include temperature and increased nutrient concentrations. Parasites included in the phylum Microspora are increasingly recognized for being ubiquitous in nature, although their ecological roles are generally unknown. This study examined several environmental, community, and host-related metrics to compare the biotic and abiotic aspects of 16 small streams; 6 with mottled sculpin (Cottus …

Predicting The Effects Of Land-Use And Climate Change On Michigan Stream Ecosystems, Jacqueline M. Taylor

Masters Theses

Land use change from forest to agriculture can alter the physical, chemical, and biological integrity of stream ecosystems. The objective in this study was to use macroinvertebrate community structure and function, physicochemical measurements, and watershed land cover type to assess stream ecosystem health in response to the effects of agriculture and predicted changes in temperature regime due to climate change. I used key biotic indices include the % Ephemeroptera, Plecoptera, and Trichoptera (EPT), taxa richness, total abundance, and Shannon’s diversity to make a comparison of six agriculturally impacted tributaries in the Muskegon River Watershed located in Michigan, USA. The stream …

Mapping Of Uml Diagrams To Extended Petri Nets For Formal Verification, Byron Devries

Masters Theses

PURPOSE: UML Statechart Diagrams are the industry standard for modeling dynamic aspects of system behavior. However, other behavioral models, such as extended Petri Nets, are significantly easier to analyze formally. This research project creates methods of converting previously unconvertible features of UML Statechart Diagrams to extended Petri Nets to allow for additional analysis of UML Statechart Diagrams. PROCEDURES: Algorithms are introduced that convert specific UML Statechart Diagrams to a novel behavioral construct, Swim Lane Petri Nets, and subsequently to extended Petri Nets. Algorithms are also introduced to convert both Swim Lane Petri Nets and extended Petri Nets to the PROcess …

Identification Of Actin Cytoskeletal Protein Interactions With The Fission Yeast Scaffold, Mid1, Marian Testori

Masters Theses

Cancer is a disease of uncontrolled cell division. Cell division in eukaryotic cells occurs by the formation of a contractile ring, predominantly composed of filamentous actin (F-actin). During mitosis, actin filaments polymerize to form rings at the medial plane of the cell that constrict causing the cell membrane to pinch and divide. Proteins that regulate this process are essential because dysregulation can lead to uninhibited cell growth and division. In fission yeast, the protein Mid1 functions as a scaffold to recruit regulatory proteins required for actin filament formation and simultaneously anchors the contractile ring at the cell division site. The …

Master’S And Doctoral Theses On Second Language Writing: A Survey Of The Emerging Voices In China, Yue Chen

Masters Theses

Graduate students in China have addressed concerns about second language writing (SLW) in their theses and dissertations since 2000, but their voices are not represented in the current SLW literature. The present study aimed to investigate resident Chinese graduate students’ research in the field of SLW. The author reviewed the abstracts of all master’s theses and PhD dissertations on SLW completed in Chinese Universities between the year 2003 and 2012. The abstracts were collected from China Doctoral Dissertations Full-text Database and China Master’s Theses Full-text Database. Each abstract was coded for major topic, research type, and target population. The coded …

A System For Preclinical Imaging Facility Management And Data Processing, Ryan Anthony Bozio

Masters Theses

Introduction: Preclinical imaging laboratories are unique and specialized facilities that generally operate as service cores within large research institutions. The facilities offer non-invasive imaging to researchers to answer scientific questions. Facilities, such as the one located within the Van Andel Institute, have multiple imaging modalities including PET, CT, SPECT, ultrasound, and optical. These modalities often times come from different manufacturers involving various image formats. Imaging facility managers are responsible for managing collaborative projects, coordinating different groups, scheduling machine and technician time, billing customers, as well as providing meaningful and reliable results to the researchers. These challenges underscore the need for …

Future Foreign Language Teachers’ Intercultural Competence, Andrew Baalerud

Masters Theses

There is a lack of research regarding the implications for foreign language study and intercultural competence. Scholars suggest that foreign language proficiency plays a role in cultivating intercultural competence, but agree that there is a lack of empirical evidence supporting this notion. Research also shows that foreign language teachers are ethnocentric. Many educators and foreign language programs use a framework developed by the American Council on the Teaching of Foreign Language (ACTFL) to promote language learning. This framework also possesses key elements in promoting intercultural competence. This study addressed whether a pre-service, ACTFL-guided teaching component of the curriculum had an …

Investigation Of The Closing Forces Involved In Re-Approximation Of The Renal Remnant Following Partial Nephrectomy, Donald M. Endres Ii

Masters Theses

Partial nephrectomy has become the preferred method of treatment in certain renal diseases, including small, peripheral tumors. However, re-establishment of hemostasis in the remaining tissue remains a challenging procedure. To better understand the forces involved in re-approximation of the renal remnant, this study measures the suture tensions reached in sliding clip renorrhaphy, as well as the ability of the tissue to support those tensions, and reviews how long suture material might be expected to survive those forces.

Three separate groups of experiments were conducted on fresh, porcine kidney tissue. Treatment groups were compared using commercially available software to compute appropriate …

Bound For Home: Containment And Community In Cold War America Through Shirley Jackson's "Flower Garden", Jennifer Lynne Furner

Masters Theses

This thesis is an examination of Shirley Jackson's short story "Flower Garden" and the white middle-class housewives of Cold War America. Through the policy of domestic containment, a practice to shield one's home and community from outside threats, traditional gender roles are strictly adhered to in order to achieve the greatest security. However, because of the housewife's confinement to the home, she often feels trapped, unable to express herself. This thesis argues that these women have no concept of home in Cold War America. Where home should be a nurturing, supportive environment, it is cold and harsh and oppressive, leaving …

The Role Of Extracellular Matrix Proteins On Epithelial To Mesenchymal Transition In Glioblastoma Multiforme, Stephen C. Orey

Masters Theses

Glioblastoma multiforme (GBM) is the most common primary brain tumor in humans and is characterized as being highly aggressive and invasive, with the ability to locally invade different areas of the central nervous system (CNS). GBM local invasion undergoes an epithelial to mesenchmal like (EMT) process characterized by the loss of cell-cell adhesion and increased cell mobility. The EMT-like switch in GBM is triggered by a single transcription factor, Twist1, and is characterized by the loss of cell clustering, re-organization of the basement membrane, and increased cell migration. GBM invasion depends on the remodeling of the extracellular matrix (ECM) …

Understanding High-Achieving African American Students: A Quantitative Study At Grand Valley State University, John A. Gipson Jr.

Masters Theses

The purpose of this study was to investigate characteristics of high-achieving African American students attending Grand Valley State University (GVSU).

A target population of 353 undergraduate students identifying as African American were invited to voluntarily participate in this study. These students possessed sophomore or higher status and maintained a grade point average (GPA) of 3.0 or greater at the time of survey distribution. 101 students completed the survey resulting in a response rate of 28.6%.

Due to the nature of the survey, descriptive statistics were utilized to report a majority of the results. However, a Chi Square Test of Independence …

Perceptions Of Creativity Among Faculty In Higher Education, Ellie Melissa Potter

Masters Theses

Higher education instructors do not sufficiently incorporate creativity in the teaching and learning environments within which they operate. While there is a great deal of research available regarding creativity and primary or secondary education, there is little research available regarding creativity and higher education. This study contributes to that gap of knowledge by surveying faculty members in one institution of higher education in order to understand their perspectives regarding creativity, both as it relates to being a creative individual and to teaching others to be creative themselves. There were 358 faculty members who participated in the online survey designed specifically …

Real-Time Stage 1 Sleep Detection And Warning System Using A Low-Cost Eeg Headset, Bryan Van Hal

Masters Theses

The goal of this thesis is to design and test a real-time Stage 1 sleep detection and warning system using a low-cost single dry-sensor EEG headset. Such a system would allow aircraft pilots or truck drivers to receive an auditory warning when they are beginning to fall asleep. The device designed in this study records a single EEG signal and filters it into low Alpha (7.5 - 9.25 Hz), high Alpha (10 - 11.75 Hz), low Beta (13 - 16.75 Hz), and high Beta (18 - 29.75 Hz) frequency bands. When the EEG transitions to match that of Stage 1 …

Egyptian Diasporas, Social Media, And The 2011 Egyptian Revolution: How Egyptians Living In Saudi Arabia Used Social Media During The Revolution, Maisoon O. Al-Sebaei

Masters Theses

In the last few years, the Arab world has been shifting to new technology, particularly social media, to create new connections and spaces for public engagement. This technology has opened new prospects in freedom of expression, especially in political reforms. Through the recent Arab Spring events, social media platforms have been helping cyberactivists for social changes. The 2011 Egyptian revolution is a prime example to show how social media platforms were used to ignite strikers and overthrow the autocratic regime. At the same time, the number and size of diasporas in the Middle East are increasing. Yet scholars have not …

Content Analysis Of British Petroleum And Tokyo Electric Power Company's Crisis Communication Messages. Comparative Analysis Of Crisis Communication Strategies, Viktoryia Abramenka

Masters Theses

This research analyzes the crisis communication messages of the two organizations British Petroleum (BP) and Tokyo Electric Power Company (TEPCO). The study looks at organizations' press-releases, Facebook updates and tweets. The research looks at detecting four main themes in the companies' crisis communication messages: trust, collaboration, commitment, and interactivity. This study then goes on to look at the crisis communication strategies.

BP's 60 press releases and 70 Facebook updates along with TEPCO's 60 press releases and 65 tweets were analyzed. The findings of the research showed that BP mainly addressed the company's commitment to resolve the crisis. Additionally, the organization …

The Experience Of Being A Foster Parent In Non-Kinship Placements: Emotional And Psychological Impacts, Lindsay Michelle Tryc

Masters Theses

With a significant number of children in the foster care system in need of safe and stable homes, caregivers who are willing to provide such a home are vital. In 2010, almost fifty percent of foster homes were non-kinship placements with caregivers who had no biological relation to the child (Child Welfare Information Gateway, 2011). As these caregivers voluntarily open their homes, they are also likely to encounter challenges with foster children due to previous traumas. The specific challenges addressed in this research study included the integration into the family, the management of behaviors, and the ability to make/break attachments. …

The African American/Black Male Experience At Grand Valley State University: Implications For The Future, Reba Loret Oguntokun

Masters Theses

Researchers note that African American male students are disadvantaged by several social, psychosocial, and institutional factors. These factors affect their enrollment, retention, and graduation rates. This study, guided by Critical Race Theory in education, explores the lived experiences of African American male students at Grand Valley State University through in-depth interviews and the utilization of qualitative data analysis. Findings reveal that social, psychosocial, and institutional factors had the ability to positively or negatively affect the academic success of the participants. The issues most frequently mentioned by participants were public school education, minority status stressors (MSS), stereotype threat, environmental incongruency, differential …

Demographic And Reproductive Status Of Lake Sturgeon In The Muskegon River System, Michigan, Alex C. Wieten

Masters Theses

My study focused on a threatened population of lake sturgeon (Acipenser fulvescens) in the Muskegon River system, Michigan. I assessed the condition, growth and population dynamics of lake sturgeon and compared them to nearby populations using a lengthweight relationship and the von Bertalanffy growth model. I also estimated the abundance of adult lake sturgeon in the Muskegon River system during the spawning run using closed-population models, analyzed movements of adult lake sturgeon during their spawning migrations using ultrasonic telemetry in 2011, and verified reproductive success by capturing larvae with drift nets in 2010 and 2011. The capture of …

Information Technology Effects On Tunisian College Students; Tunisian English Majors As A Case Study, Ahmed Lachheb

Masters Theses

Tunisia has been recently in the worldwide news since December 2010. A country where the “Arab Spring” started that lead to a major political, economic and social shift in the Middle East and North Africa’s region. Change in all the country’s systems and dynamics is occurring on a daily basis during the current post-revolutionary period. However, Tunisia’s profile in academic journals and research is absent due to the lack of research work. In a country peopled with about 10 million, almost half a million students are attending 239 public and private higher educational institutions¹. Seeking higher education is …

School Adult And Student Perceptions Of Bullying In Middle School: A Mixed Methods Case Study, Michelle L. Barrows

Masters Theses

This mixed-methods case study examined the perceptions of students and school adults regarding bullying at one urban middle school (grades 6-8) in Grand Rapids, Michigan. Participants completed a two-part survey. Part one contained open-ended questions regarding the respondent’s experiences at the school and part two used a questionnaire from Maunder, Harrop and Tattersall, (2010) containing a set of twelve scenarios with questions asking participants to indicate whether or not it is bullying, the frequency seen in the school, and the severity if it happened to a girl or a boy. This study showed that awareness of the school district’s anti-bullying …

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 …

Parents’ Attitudes Toward Their Children’S Heritage Language Maintenance: The Case Of Korean Immigrant Parents In West Michigan, Duckyoung Jung Becker

Masters Theses

Research shows that many immigrant parents in the United States struggle with heritage language maintenance as their children start school in the dominant society. Many studies also reveal that immigrant parents value heritage language maintenance highly and wish their children to maintain home language. Although heritage language research has increased in the recent years, there is still a dearth of research among immigrants who reside outside of large metropolitan cities in the United States. By taking the case study approach, the present study identifies Korean immigrant parents who reside in West Michigan towns and, through interview and observations, explores their …