Digital Commons Network^™

Comprehensive Evaluation Of A Computer Based Learning System, Arun Sharma Chintalapati

Masters Theses

"This thesis presents the results of a comprehensive multi-method evaluation that was conducted on the Rapid Development System (RDS), a computer-based learning environment. The development of the project was funded by a National Science Foundation grant. Prior to this evaluation, the RDS had gone through two iterations.

A pre/post evaluation was conducted using questionnaires and eye tracking. Multi-method evaluation was employed to help triangulate the results and to provide additional insights. Data from the eye tracking was used to study the influence of the RDS interface on the attention and the cognitive workload of students with respect to the learning …

Synthesis And Toxicity Studies Of Imidazolium-Based Ionic Liquids, Ninu Madria

Masters Theses

"There is a considerable recent interest in the applications of room temperature ionic liquids (RTILs) as green solvents in organic synthesis and as nonvolatile electrolytes in lithium ion batteries. A variety of commercially available imidazolium based RTILs have been used for these applications, mainly due to their negligible vapor pressures, high thermal stabilities, wide liquid range, wide electrochemical windows and high anodic stability. The state of the art lithium ion batteries require the use of electrolytes that have relatively low viscosities at temperatures as low as -35°C. This thesis describes the synthesis of novel oxygenated and fluorinated imidazolium based RTILs …

Phytoforensic Tools: Directional Uptake Of Chlorinated Solvents, Matthew Alan Limmer

Masters Theses

"Trees have been used to locate contaminated soil and groundwater, augmenting traditional methods, such as well drilling, that are time-consuming and expensive. In the past decade, plant sampling has gained acceptance as a reliable method for site screening. In this new field of phytoforensics, research efforts focus on developing quicker, more accurate and more informative sampling and analysis methods for measuring contaminant concentrations in trees. These phytoforensic tools are a novel approach to site assessments, potentially reducing cost while more effectively locating contaminated groundwater. This thesis evolved from field data suggesting azimuthal concentrations in tree trunks may reflect the corresponding …

Impact Of Channel Statistics And Correlation On Underwater Acoustic Communication Systems, Jesse Scott Cross

Masters Theses

"Several statistical properties of underwater acoustic channels gathered from experiment data are analyzed. The baseband channel impulse response (CIR) is estimated using a time domain least squares technique with a sliding window applied to the probing sequences. From the CIR estimation, the probability distribution functions (PDFs) of the magnitude, real part, imaginary part, and phase of the CIR are calculated. Gamma, Rayleigh, and compound k distributions are fitted to the magnitude PDF and the fitness of the distributions are calculated with a two-sample Kolmogorov-Smirnov test. Other statistics such as the autocorrelation function, coherence time, and scattering function are evaluated. The …

Eyes Don't Lie: Understanding Users' First Impressions On Website Design Using Eye Tracking, Sirjana Dahal

Masters Theses

"Websites are becoming more prevalent these days. They need to create a favorable first impression on the users during initial exposure. After allocating their attention to stimuli, users form a cognitive representation of the visual information leading to first impression. Hence, first impression is important to evaluate the effectiveness of a website. This research tries to examine the amount of exposure time needed to form first impression; identify the web design factors that influence the formation of users' first impression; study the emotional responses of users on website design; and finally understand the relationship between first impression and eye movement. …

Visual Inspection And Ground Penetrating Radar Investigation Of The Historical Pulaski County Poor Farm Cemetery, Ibrahim E. Ahmed

Masters Theses

"This thesis is a comprehensive summary of the geotechnical investigation of the Historical Pulaski County Poor Farm Cemetery, southeast Waynesville, Missouri. This research demonstrates that unmarked graves in an abandoned historical cemetery can be located using visual site inspection and ground penetrating radar techniques.

During the course of these investigations, multiple visual site inspections of Pulaski County Poor Farm Cemetery were conducted and ground penetrating radar data were acquired. Based on the visual site inspections and the interpretation of ground penetrating radar data, a total of one-hundred and fifty-one (151) graves were identified; eighty-seven (87) of the graves were mapped …

Contrast Enhancement Of Digital Mammography Based On Multi-Scale Analysis, Muhammad Imran Khan Abir

Masters Theses

"A contrast enhancement algorithm is developed for digital mammograms aiming to assist radiologists in discerning early breast cancer easily. The algorithm is based on a Laplacian pyramid framework image processing technique. The mammogram is decomposed into three frequency sub-bands, low, mid, and high frequency sub-band images. The lower sub-band image contains very fine details and higher level contains coarser features. In this method contrast enhancement is achieved from high and mid sub-bands by decomposing the image based on multi-scale Laplacian pyramid and enhance contrast by image processing. Several mapping functions are applied on sub-band images based on experimental analysis. After …

Scholarship In International Technical Communication, 1950-1989: A Historical Study, Xiaoyan Huang

Masters Theses

"This thesis is a study of the published scholarship in international technical communication from 1950 to 1989. It provides insight into the four decades' worth of scholarship as well as a resource for the development of present and future scholarship in international technical communication. It attempts to answer the following research questions: What did scholars of international technical communication study in each decade? What are the similarities and differences among the four decades in terms of scholarship in international technical communication? What are the strengths and weaknesses of the relevant scholarship in the four decades? What can we learn from …

Density Determination Of Tristructural-Isotropic Nuclear Fuel Using Multiple Projection X-Ray Radiography, Frank Angelo Strantz

Masters Theses

"Effective methods of enhancing the safety and efficiency of the nuclear power industry embolden its perception and economic viability. Fuel reliability is an essential component of the prosperity of next generation high temperature reactors; as such, an equally dependable quality control method is mandatory. Tristructural-isotropic (TRISO) fuel, the fuel developed for use in these reactors, utilizes density measurement of coating layers as a standard for quality control. Common methods of measuring density, such as sink-float and ceramography are destructive, and as such generate radioactive waste, take a relatively long time to prepare samples, rely on a low sampling rate to …

Numerical Simulation Of Relative Permeability Modifier Effect On Oil And Water Production, Murad Mohammedahmed Abdulfarraj

Masters Theses

"Excess water production is one of the most prevalent operational problems that oil companies are facing. Polymers and polymer gels have been used widely to control excess water production for mature oilfields. It is well known that polymers/gels can reduce the permeability to water (Krw) much more than that to oil (Kro). This phenomenon is called disproportionate permeability reduction (DPR) and the polymers or gels that exhibit this behavior are called relative permeability modifier (RPM). When RPMs are placed in reservoir, reduced permeability to water can lead to decreased water production, and sometimes increased hydrocarbon production, therefore prolonging the useful …

A Framework For Transparent Depression Classification In College Settings Via Mining Internet Usage Patterns, Raghavendra Kotikalapudi

Masters Theses

Depression is a serious mental health problem affecting the mind and body of people in our society. As of today, depression affects about 5 to 7% of the American population, which roughly translates to 14 million people! A particularly worrying concern these days is the increasing incidence of depression among college students. The problem is so severe that many US campuses have dedicated centers with mental health professionals catering to students needs. Although there are very effective treatments for depression, studies report that ~80% of depressed students do not seek any help due to the lack of perception of the …

Experimental Study Of The Interaction Between Surfactants And Preformed Particle Gels, Farag Awadh Muhammed

Masters Theses

"Gel and surfactant treatment are two principle methods to reduce water production and enhance oil recovery (EOR). However, either method by itself has limitations that can be avoided by combining the two. Gel treatment can improve sweep efficiency but has little effect on micro-displacement efficiency. Surfactants are mainly used to improve displacement efficiency but have little effect on sweep efficiency. This research sought to investigate whether the combination of gel and surfactant treatments can be used to significantly enhance oil recovery while reducing water production for extremely heterogeneous mature reservoirs. A newer trend in gel treatments is preformed particle gels …

Shale Gas Rock Characterization And 3d Submicron Pore Network Reconstruction, Malek Elgmati

Masters Theses

"Determining shale gas petrophysical properties is the cornerstone to any reservoir-management practice. Hitherto, conventional core analyses are inadequate to attain the petrophysical properties of shale gas at submicron-scale. This study combines interdisciplinary techniques from material science, petrophysics, and geochemistry to characterize different shale gas samples from North America including Utica, Haynesville and Fayetteville shale gas plays. Submicron pore structure, clay mineralogy, wettability and organic matter maturation were investigated to evaluate the petrophysical properties of shale gas rocks and to determine the impact of organic and inorganic matters on wettability alteration for different fracturing fluids on shale gas rocks.

High pressure …

The Feasibility Of Using Bifidobacteria Bifidum (Atcc 700541) For The Production Of Prebiotic Oligosaccharides, Candice Marie Luehrs

Masters Theses

"Galactooligosaccharides (GOS) are prebiotics that are being used to influence intestinal microbiota towards health promoting, beneficial bacteria like bifidobacteria. Natural sources of GOS are not found in suitable levels to achieve the desired health effects so economically viable commercial production methods are important. Enzymatic conversion of lactose to GOS through transgalactosylation is a preferred method since the starting material is inexpensive and readily available. Enzymes used in batch production are purified from fungal or bacterial sources or remain in whole cells cultured for GOS production. Purified or unbound enzymes are single use whereas enzymes retained within whole cells can potentially …

Waterjet Injection Of Powdered Activated Carbon For Sediment Remediation, Chris J. Redell

Masters Theses

"In situ sediment remediation through waterjet-activated carbon amendment delivery is an innovative means to mitigate the dangers posed by hydrophobic organic compounds. Ease of use and applicability to inundated environments makes this technique valuable. This work made feasible low-pressure injections of a 15% (by dry weight) carbon/water slurry through a pulsating piston pump waterjet. The project fabricated nozzle tips and a unique injection apparatus comprising a quantitative system for the evaluation of bench scale models. Based on a series of iterative processes, injections of carbon were analyzed for depth and concentration. Injections varied in duration and they were made into …

Isolation And Characterization Of Bacterial Symbionts From Crotalaria Spectabilis Grown On Trichloroethene Contaminated Soil, April Lyn Rocha

Masters Theses

"The discovery of several members of the Leguminosae family growing on a TCE contaminated site demonstrated that they have the capabilities to tolerate the TCE contamination. This led to an investigation of the plants' ability to metabolize TCE. Research by Dr. Lee Newman showed that nodules from Crotalaria spectabilis grown on the site had TCE metabolites present while nodules from other legumes at the site did not. The presence of TCE metabolites within the C. spectabilis nodules suggests that the bacterial symbiont may be responsible for TCE metabolism. This led us to investigate the symbiont of C. spectabilis and its …

Found: The Etiology Of Character Realization, Within Rhetorical Analysis Of The Series Lost, Through The Application Of Underhill's And Turner's Classic Concepts Of The Mystic Journey, Lacey Mitchell

Masters Theses

This study rhetorically and visually analyzed the presence of the spiritual journey represented through the journeys of selected characters traced over several episodes of the television series LOST. Popular literature asserts the classic concept of the spiritual journey can be and has been found across the spectrum of various media. Episodes were analyzed to trace the journey of two characters, Jack Shephard and Juliet Burke. Evelyn Underhill's three-fold path and Victor Turner's concepts of liminality and communitas were implemented as a way to organize and analyze the contextual elements displayed in the episodes. The sampling used forty-seven episodes across the …

Assessing Intercultural Experience: Differences In Biculturalism, Intercultural Sensitivity, And Cognitive Flexibility Among Latino Immigrants, Christine Christmas

Masters Theses

This study examined first generation immigrants, defined as those who were born in a Latin American country and moved to the U.S. after the age of 12, and second generation immigrants, defined as those who were born in the U.S. or moved here before the age of 12. Literature in the field of cross-cultural adaptation suggests that intercultural communication competence tends to be further developed as a result of intercultural adaptation. The intent of this research was to test this assertion. Data was collected by way of survey administration on a sample of 216 Latino immigrants representing both first and …

The Doppelgänger Tale And The Masquerade Of Race: The Enduring Influence Of Dumas` Iron Mask And Twain`S Switched Heroes, Virginia Payne Dow

Masters Theses

Although separated by the Atlantic Ocean, nineteenth-century authors Alexandre Dumas (1802-1870) and then Mark Twain (1835-1910) separately created narratives involving the doppelganger motif which both challenged the accepted social ideals and spawned a plethora of imitations. These tales of switched identities served to critique social stratification and racial discrimination.

Given the current influx of interest in the doppelganger paradigm within the media, and particularly in light of rising cultural studies involving race, class, and social stratification, the main novels of this study--Dumas' The Man in the Iron Mask and Georges, and Twain's Pudd'nhead Wilson--warrant ever-increasing interest due to their discourse …

Man Thinking The World: Contemporary American Authors And The Nobel Prize In Literature, Christopher Ryan Knight

Masters Theses

After the Swedish Academy announced that Jean-Marie Gustave Le Clézio was the 2008 Nobel Prize in Literature laureate, former permanent secretary Horace Engdahl sparked controversy with his comment that the "US is too isolated, too insular. They don't translate enough and don't really participate in the big dialogue of literature . . . That ignorance is restraining." This thesis evaluates the legitimacy of Engdahl's criticism by considering three American authors: John Updike, Edward Albee, and Charles Simic. Each author is evaluated as a contributor to international literary dialogue. The author, drawing from Walter Benjamin's "Theses on the Philosophy of History," …

"Alfred Hitchcock Presents; `Propaganda'": A Rhetorical Study Of Alfred Hitchcock's World War Ii Propaganda Films, Jennifer Renee Brown

Masters Theses

Alfred Hitchcock is a well known filmmaker whose work has been often studied by English, communication, and film scholars. However, those examining Hitchcock seem to have pet favorites of films they deem worthy of study. This thesis examines the lesser-known propaganda films of Alfred Hitchcock made for the British Ministry of Information in 1944. Bon Voyage and Aventure Malgache each tell a story of intrigue and adventure in French territory during the German occupation and Vichy government of World War II. However, after the MOI waited almost the entire war to have propaganda made by Alfred Hitchcock, the films were …

A Preliminary Investigation Into The Effect Of Kinesio And Athletic Tape On Skin Blood Flow Changes, Ryan Klawon

Masters Theses

This research tested the effectiveness of a relatively new therapeutic product called Kinesio tape. One of Kinesio tape's therapeutic claims is increased blood flow to the taped area and thus expediting the body's healing process (Fu et aI., 2007). The purpose of this study was to compare the effects of Kinesio tape versus athletic tape on blood flow in the upper arm during rest and immediately following submaximal exercise. Certified athletic trainers (ATC) often use regular athletic tape to limit the range of motion and stabilize a joint as opposed to providing therapeutic benefits such as increasing blood flow.

Research …

Paths To Citizenship: A Comparative Study Of Japan, Germany And Sweden, Marisha L. Lecea

Masters Theses

This paper examines citizenship policy in Japan, Germany and Sweden in an attempt to explain why some rich, democratic nations have high rates of naturalization and non-restrictive paths to citizenship, while others have negligible rates of naturalization and very restrictive policies. Japan has a very restrictive policy while Sweden has a very open policy. Germany is a mid-level case that has moved from more restrictive to less restrictive over the last several years. In this paper I look at the explanatory potential of internal, institutional, and external variables. I use data from the W orId Values Survey to compare domestic …

Breaking Down The Walls: Divorce And The Effects It Had On A Child's Communication In Relationships Outside Of The Family, Jennifer Maddox

Masters Theses

There is no question that divorce is prevalent in our society today. This paper discussed a study about the effects divorce has on an adolescent girl's communication with adults outside of her family. The hypothesis was that divorce negatively effects a child's communication with adults outside of their family. The two methodologies used to conduct this study were Narrative Analysis and Q-sort. The ten participants for the Narrative Analysis method were asked whether they thought their parents divorce effected their communication with adults outside of their family, and whether the effect was negative or positive. They were also asked to …

An Analysis Of The Impact Of Intellectual Property Rights On Chinese Students, Bing Yang

Masters Theses

This study examined foreign Chinese students' adaptation to American intellectual property rights (IPR) in the perspective of Cognitive Dissonance Theory (CDT). Previous studies focused on historical, legal and cultural difference between China and the U.S., while Chinese students' cognition remained to be explored. Ten Chinese students from both undergraduate and graduate programs with different lengths of staying in the U.S. were interviewed individually, and interview questions were created according to the three stages of CDT. Results showed that Chinese students had eliminated their cognitive dissonances in the U.S., and some demographic and cultural factors that influenced Chinese students' cognition regarding …

Public Perception Or Media Manipulation: The Power Of The Agenda-Setting Function Of The Press Examined, Mitchell Malcheff

Masters Theses

Originally developed by McCombs and Shaw (1972), agenda-setting theory has provided a theoretical framework for numerous media bias studies. This pilot study attempted to add to that body of literature by addressing a relatively new evolution of agenda-setting theory known as second-level agenda-setting by measuring whether biased media can significantly change attitudes about a given issue. To accomplish this, participants were surveyed regarding their perceptions regarding credibility on the part of MSNBC, presented with a news package from MSNBC, and then surveyed to examine if any attitude change occurred. Significance was found to support the presence of the hostile media …

Writing A Chemistry Textbook That Supports Inquiry Based Learning, Sarah Jean Henning Toman

Masters Theses

The National Science Education Standards promote inquiry instruction. As teachers change how they teach, will textbooks follow suit? Is it even possible to have an inquiry-based chemistry textbook and if so, what would it look like and would students find it useful? This study conducted as part of the Target Inquiry Program at Grand Valley State University explored these questions by comparing student reactions to excerpts from a standard high school chemistry text to those of an inquiry-based chemistry text developed by the researcher. Reactions recorded in student interviews and achievement outcomes were analyzed to address the research questions. Results …

Discovering The Vision In Beth Moore's "Breaking Free" Message: Applying Bormann's Fantasy Theme Analysis To Evaluate The Message, April Nicole Pressley

Masters Theses

Beth Moore, Christian speaker and author, has become a prominent figure in Christian circles. She ministers to over a million people a year with her messages. Breaking Free is her "life message." This project analyzes 6 of 11 messages from Breaking Free. Using Bormann's Fantasy Theme Analysis, seven fantasies emerged from the messages, which yielded a rhetorical vision that describes what Beth Moore believes a woman should be like after hearing her message. After that analysis, the fantasies where compared to evangelical Christian doctrine. That analysis determined that Moore's underlying message is valid and acceptable to the Christian audience she …

Spatial Rape: Globalization And The Tourist-Vagabond Relationship In Mark Z. Danielewski's House Of Leaves, Tracy Stephens

Masters Theses

At the center of Mark Z. Danielewski’s House of Leaves is the narrative of The Navidson Record, the story of Will Navidson’s struggle to understand and conquer the mystery of his labyrinthine house - a mystery that is profoundly connected to Navidson’s guilt over Delial, a dead Sudanese girl whose photo made Navidson famous. Navidson’s preoccupation with Delial shapes the house, lending it the characteristics of globalized space as it would have been experienced by Delial and others in her socioeconomic circumstances (whom Zygmunt Bauman has named vagabonds), in contrast to the experience of tourists such as Navidson. The …

The Perceived Influences Of Campus Living Environments On Male Identity Development, Nathaneal R. Pauley

Masters Theses

The purpose of this study was to explore the traditional studies related to college male development in relation to men's perceptions of their living environments. Prior research in the field of male development identified male studies and gender identity, male gender role conflict, hegemonic masculinity and behavioral issues in college as important concepts to consider when conducting research with college men. A qualitative study was conducted to gain an understanding of five men's perceptions of their own masculinities, as well as their thoughts on single-sexed and mixed-sex campus living environments. General themes and categories from participant responses were critically evaluated …