Digital Commons Network^™

Numerical Modeling Of Infrared Thermography Techniques Via Ansys, Hayder Abdulnabi Thajeel

Masters Theses

"Several inspection techniques have been developed over years. Recently, infrared thermography (IRT) technology has become a widely accepted as a nondestructive inspection (NDI) technique for different fields and various applications as well. Infrared thermography stands as one of the most an attractive and a successful NDI technique that has ability to detect the object's surface/subsurface defects remotely based on observing and measuring the surface's emitted infrared heat radiation by using an infrared camera. The finite element modeling FEM ANSYS was successfully used for the modelling of several IRT techniques; such as Pulsed Thermography (PT) and Lock-in Thermography (LT) that can …

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, …

Comparison Of The Strength Of Harmony, Melodic Line, Rhythmic Variation, And Expressive Elements In Influencing Emotional Judgment In Music, Marilyn M. Moore

Masters Theses

Studies in the literature have been conducted that seem to establish that humans make consistent and similar emotional judgments when they are asked to describe an emotion that is being expressed musically. The present study targets four musical elements; harmony, melodic line, rhythmic variation, and expressive elements, to investigate which of these musical elements are most effective for influencing a listener to be able to recognize the composer's intended emotion of the music. There are eight original songs composed by the researcher, each song is assigned a specific intended emotional term. The eight songs are presented in five distinct conditions, …

Firmware And Software For An Integrated Electrophysiology Data Acquisition And Stimulation System, Kyle D. Batzer

Masters Theses

This thesis describes the firmware and software design for a prototype electrophysiology experimentation system. The overall system, built on the work of previous students and developed with fellow graduate student Mr. Donovan Squires, provides eight channels of acquisition and four channel of arbitrary waveform generation for stimulation of biological systems. In order to show the performance of the system, a common electrophysiology experiment was performed on the giant axon of an earthworm and the results were compared to previously validated systems. The developed system is intended to support future work at the Neurobiology Engineering Laboratory at Western Michigan University.

The …

Still Siblings: The Perceived Importance Of Sibling Relationships For Foster Children, Jessica A. Church

Masters Theses

This research was conducted to answer the question “Do children who are perceived to have strong relationships with siblings and more access to their siblings have fewer problems adjusting to their foster care placement as observed by child welfare professionals?” This qualitative research project was completed through semi-structured interviews with professionals who work with children in foster care in a variety of ways (and may have worked with children in more than one way during their career in child welfare), such as foster care workers, counselors, and sibling visitation supervisors. The snowball sampling method was used in this research. These …

Use Of Polymer Rapid Tools As Functional Injection Mold Tooling, Sean Derrick

Masters Theses

Conventional tool making for injection molded plastics is expensive, time consuming, and generates a great deal of waste. Presently, industry is waiting for what is commonly referred to as Rapid Tooling (RT). The greatest opportunity for RT implementation would be the use of Additively Manufacturing (AM) technology. Specifically, AM techniques which use a high strength polymer resin substrate.

The following research is an initial feasibility study to determine if Polymer Rapid Tools (PRTs) could be used as functional injection mold tooling. The objective of the research was to determine if a PRT could mold a variety of features to a …

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 …

Development Of Novel Vaccines For Campylobacter Control In Poultry, Lindsay Ann Jones

Masters Theses

Campylobacter is the leading bacterial cause of human enteritis in developed countries. Human campylobacteriosis is commonly associated with consumption of undercooked, contaminated chicken, a natural host of Campylobacter. Thus, control of Campylobacter colonization in poultry at the farm level would reduce the risk of human exposure to this pathogen. Vaccination is an attractive intervention measure to mitigate Campylobacter in poultry. Our recent studies have demonstrated that the outer membrane proteins CmeC (an essential component of CmeABC multidrug efflux pump) and CfrA (ferric enterobactin receptor) are feasible candidates for immune intervention against Campylobacter. By targeting these two promising vaccine …

A Novel Approach To Multiphysics Modeling Of Heat And Mass Transfer In Porous Media, Seth Allen Pemberton

Masters Theses

This thesis aims to investigate conjugate heat and mass transfer in porous media with an emphasis on textiles. Both hygroscopic materials, those that absorb water vapor, and non-hygroscopic materials are examined. A model was developed that utilizes COMSOL’s equation-based partial differential equation (PDE) interface which allows the user to input any equation(s) to be solved. By the use of experimental and numerical data each part of the model, i.e. flow field, gas diffusion, convection and vapor absorption, is verified. The accuracy of the equation-based unsteady flow field is verified by modeling the flow over a circular cylinder and extracting the …

Cobb Creek Church: Changing Perspectives In A Serpent-Handling Congregation In East Tennessee, Michael Noel Reid

Masters Theses

In the last year, the traditional practice of handling venomous snakes in Pentecostal church services has returned to the forefront of popular media attention. With the death of renowned handler Randy “Mack” Wolford in West Virginia in May, the news has been rife with stories of the century-old tradition. New, younger groups of handlers have also been instrumental in raising attention to the practice. One congregation in particular has been a key focus for media outlets around the nation. The Cobb Creek Church of God has been featured in The Tennessean, The Wall Street Journal, USA Today, …

The Economics Of Grazing Beef And Dairy Cattle On Native Warm-Season Grasses In Tennessee, Joe Kenneth Lowe

Masters Theses

Two separate studies focusing on the economics and animal performance of grazing native warm-season grasses (NWSGs) are presented in this thesis. In the first study, the first objective was to determine if there was a difference in net returns to full-season grazing of beef steers on switchgrass (SG), big bluestem and indiangrass (BBIG), and eastern gamagrass (EG). The second objective was to determine the price of biomass a producer would need to receive to breakeven between full-season grazing beef steers and early-season grazing with a biomass harvest (i.e., a dual purpose grazing and biomass production system) for SG, BBIG, and …

Standardized Longitudinal Connection Detail For Decked Precast Prestressed Concrete Girders, Ramzi Muftah Ali Abduallah

Masters Theses

The use of decked precast prestressed concrete girders (DPPCG) is becoming popular in accelerated bridge construction. DPPCGs are assembled and connected on site using grout or concrete longitudinal connections. The durability performance of these connections is a concern. The objective of this research is to document the longitudinal connection behavior with respect to its design parameters, and establish a process for developing a standardized connection detail considering the demands due to live load and temperature gradient (TG) load. In order to demonstrate this process, decked bulb-tee and decked box-beam girders were considered. Finite element models, under various types and levels …

An Assessment Of Public Outreach With Children And Educators Conducted By The Fort St. Joseph Archaeological Project, Erica A. D’Elia

Masters Theses

Archaeological public outreach to children can be enhanced through collaboration with school educators. While archaeologists have begun to collaborate with local and descendant communities, they have been slow to engage in work with educators in the same manner. The Fort St. Joseph Archaeological Project provides the context for me to explore some of the current issues in public archaeology and the politics of education. My study was conducted to better understand the needs of both children and teachers. In my work with the archaeological summer camp for middle school students I seek to conceptualize how the camp enhances their educational …

Single-Depot Vehicle Routing Problem For Home Delivery Of Pharmaceutical Products, Kimberly Starr Harms

Masters Theses

Some retail pharmacies offer home delivery services to establish a competitive advantage in the growing healthcare market. The handling of orders for home delivery includes several internal and external processing and transportation activities. In this work, models were developed for use in a pharmacy delivery system to assist personnel in their daily activities. This work includes standard operating procedures for picking, packing and loading of delivery orders and the assignment and routing of vehicles to deliver customer orders. Results from simulated delivery areas identified interesting tradeoffs when comparing densely populated areas to sparsely populated areas. In addition, recommendations for order …

Evaluation Of The Efficacy Of A Rat Agreement Based Reinforcement Procedure, Katherine B. Lalonde

Masters Theses

Since 2007, giant African pouched rats (Cricetomys gambianus) have been used successfullyfor detecting Tuberculosis (TB) positive patients.The rats are trained to detect TB-positive sputum samples through the use of operant conditioning techniques, in which an indicator response is rewarded with food. If the rats are to be used for first line screening of patients reinforcement could not be provided because the true status of the sample would be unknown. The present study evaluated the effects of a reinforcement-for-agreement procedure that could be used to reinforce indication responses when the true status of the sample is unknown. Four rats evaluated 100 …

Silence, Declaration, And Circumstance: Rethinking Women’S Roles In Saudi Arabia, Ashleigh Elizabeth Dunham

Masters Theses

The canon of academic research on Saudi Arabian women still fails to address the stereotypical images that represent them. While Anglo-American models of feminism may benefit American women, they cannot and should not be a lens through which Americans view Saudi women, as American and Saudi cultures are fundamentally different. Because of this issue, Anglo-American feminism along with the obvious problems of racism and Islamophobia contribute to the American assumption that Saudi Arabian women lack agency and control of their lives. The resulting ideologies continue to influence American ideas about Saudi Arabian women’s access to the opportunities that non-Saudi women …

Origin Of High Levels Of Ammonium In Groundwater, Ottawa County, Michigan, Derrick Lingle

Masters Theses

Groundwater from wells located in and around Hemlock Crossing Park in Ottawa County, Michigan has elevated levels of ammonium. High ammonium concentrations in potable water wells are a common indicator of anthropogenic impact, such as landfill leachate or agricultural activity. Ammonium can also occur in groundwater through the decay of natural organic material. Along with the retrieval of a complete glacial sediment core via rotasonic drilling, numerous chemical and isotopic parameters were used to determine the source of ammonium in the impacted aquifer.

Buried organic material, deposited during the Athens subepisode interglacial period, is in contact with groundwater containing elevated …

Temperament In Mothers With Borderline Personality Disorder And In Their Young Children Aged 4-7, Christina Gabriela Mena

Masters Theses

In this study we sampled mothers with Borderline Personality Disorder (BPD) and their young children ages 4-7 (n = 36), as well as normative comparisons (n = 34). We assessed temperament in both mothers and their children. Mothers reported on their own and on their children’s temperament. Controlling for maternal current major depressive disorder and education, mothers with BPD reported more negative affectivity, less effortful control, and less positive affect than did normative comparison mothers. Children whose mothers had BPD had more negative affectivity (fear and frustration) and less effortful control, but not less smiling and laughter. When …

“Common Sense” Versus “Good Sense”: Marginalization In Agriculture, Mark W. Hoock

Masters Theses

Scholars have engaged in discussions of when and where capitalism emerged in agrarian America. These discussions have led to categorizations that placed some farms outside the discussion of capitalist interrelationships. This separation homogenized many 19^th and early 20^th century farms on the Hector Backbone in Schuyler County New York into a “non-capitalist” category. This thesis aims to illuminate the real lived conditions of a sample of these farmers through a Marxist dialectical perspective. Archeological analysis of production strategies, through a Marxist framework allows for a better understanding of the differences between individual marginalized farms. Since analysis of a …

Analytical Solutions For A Large-Scale Long-Lived Rotating Layer Of Fluid Heated Underneath, Pouya Jalilian

Masters Theses

In this work, the system of equations for a large- scale long lived rotating layer of fluid with the deformable upper free surface and non-deformable lower free surface heated underneath has been reviewed and derived. The quasi-geostrophic approximation, the beta effect and the method of multi-scale expansions have been employed to and as a result, an equation governing the evolution of large-scale perturbations, has been derived. The effect of each term present in the upper surface deformation equation has been analyzed and the analytical solutions have been obtained by virtue of employing auxiliary Riccati equation method. The soliton solutions obtained …

Recovering The Saumurois: Lay Patronage To Saint-Florent Of Saumur, Ca. 950-1150, Adam C. Matthews

Masters Theses

In the mid-tenth century, the lay powers of the Loire valley established the abbey of Saint-Florent at Saumur with the local aristocracy welcoming the monks and forming spiritual and economic relationships through acts of patronage. The brothers remembered gifts of property, grants of rights, and exemptions in charters which were ultimately collected into the abbey's first cartulary, the Livre Noir. Despite this wealth of sources, historians have paid only cursory attention to Saint-Florent in recent scholarship. The present study incorporates the abbey's charter sources into broader debates concerning society in eleventh-century France. The use of case studies provides insight …

Stratigraphic Controls On Diagenetic Pathways In The St. Peter Sandstone, Michigan Basin, Stephen A. Zdan

Masters Theses

The Middle Ordovician St. Peter Sandstone in the Michigan Basin is a target for hydrocarbon exploration/production, and carbon sequestration and geologic storage. The St. Peter is predominantly a marine sandstone with four dominant lithofacies. The uppermost facies contains zones of porosity and good reservoir quality. Because of the mostly uniform detrital composition, diagenesis must play a leading role in reservoir quality development. This study tests stratigraphic controls on diagenesis and reservoir quality development. The distribution of diagenetic regimes is believed to result from depositional setting and related geologic processes, including variations in sediment accumulation rate. Early carbonate cements preserve pre-compaction …

Formulation And Evaluation Of Resistive Inks For Applications In Printed Electronics, Sughosh Satish Bhore

Masters Theses

In the 21^st century, it has been shown that printing methodologies can be used to print electrically functional devices on a variety of substrates. In comparison to conventional electronic manufacturing methods, printing is a more cost effective and less complex process. The requirements for manufacturing Printed Electronics (PE) components are much more demanding than graphic printing applications due to the additional requirement of easy electron flow. This additional requirement increases the need for print uniformity and layer-to-layer registration to a much higher degree. In this work, hybrid UV-curable, water-based, electrical resistive inks were formulated. Inkjet inks were prepared by …

The Hearts Of Ovid's Heroines In Trojumanna Saga, Luke J. Chambers

Masters Theses

In western civilization no story has been retold more times than the Trojan War. Homer's works were known only by repute in western Europe after the fall of Rome. As such, the Middle Ages saw the blossoming of a new Troy tradition based on Dares Phrygius's De Excidio Troiae Historia (The History of the Destruction of Troy). Most countries of medieval Europe used this laconic work to retell the Troy story in each country's particular idiom.

The settlers of Iceland developed a sophisticated literary culture in the thirteenth century. No other people wrote narrative prose works on such a …

Labeling Research Deviant: A Comparative Analysis Of Federal Ad Hoc Commissions On Human Subject Research, Brian W. Rossana

Masters Theses

A review of the literature suggests there is still reason for concern due to the nature of deviant research in the past and the continued existence of ambiguous guidelines in particular organizational contexts. Federal ad hoc commissions have been a prominent environment where the absorption of the social reaction to deviant events and discussions regarding bioethics has transpired. The goal then was to ask what conditions of commissions lead to the presence of a research deviant? A convenience sample of nine U.S. federal ad hoc commissions was performed utilizing a method known as crisp-set Qualitative Comparative Analysis (csQCA). The results …

Utilizing Persistent Scatterer Interferometry To Investigate The Nature And Factors Controlling Nile Delta Subsidence, El Hachemi Yousef Bouali

Masters Theses

The Nile Delta in Egypt is being threatened by two continuous and relatively slow hazards: encroachment from the Mediterranean Sea as sea levels rise and land subsidence of the delta itself. The magnitude of sea level rise has been actively monitored, while the subsidence of the Nile Delta has not been adequately quantified spatially and temporally. Instead, all previous studies have either focused on measuring average Holocene subsidence rates or modern subsidence rates on local scales (point- or city-scale).

The overall study objective is three-fold: (1) to measure and map the spatial variations in subsidence rates across the entire Nile …

Fuctional Properties Of Phthalocyanine Dye Based Inks, Yumeizhi Jia

Masters Theses

Currently, inkjet printing techniques are getting more attention. They have the features of non-contact and additive patterning feasibility, compatibility with different substrates (the materials on which the ink is printed), low temperature processing, and low cost (1) (2). They can be used for patterning solution processable polymers or nanoparticle inks on various substrates including conductive materials, paper and glass (3). The need for proper functional inks is increasing every year. The goal of my work was to formulate a phthalocyanine water based ink, which can work as a dielectric ink. In my research, all the materials which were used to …