Digital Commons Network^™

In Vitro Analysis Of Short Chain Fatty Acids And Human Fecal Microbiota Stimulated By Pectin Sources, Byungjick Min

Graduate Theses and Dissertations

As interest increases for colonic health, various studies have been conducted to investigate functional ingredients for host health and prevention of chronic disease in humans such as colon cancer and Type 2 diabetes. In particular dietary fiber has been reported to have beneficial effects on colonic health. More recently, dietary fiber has been categorized based on its characteristics and numerous studies have been conducted to determine correlations with chronic diseases. Pectin is a naturally occurring biopolymer that has been used in various applications for purposes of pharmaceutical and biotechnology. Pectin is a soluble dietary fiber and can be entirely fermented …

Effect Of Electrostatic Spraying Of Food-Grade Organic And Inorganic Acids, And Grape Seed Extract On Salmonella Typhimurium And Escherichia Coli O157:H7 On Spinach And Iceberg Lettuce, Vijayalakshmi Ganesh

Graduate Theses and Dissertations

The safety of fresh produce is often challenged by the sporadic incidences of outbreaks owing to Salmonella Typhimurium (S.T.) and Escherichia coli O157:H7 (E.c.). Washing and current disinfection strategies do not completely decontaminate leafy greens such as spinach and iceberg lettuce. Therefore, more effective treatments are essential to ensure the microbial safety of the produce at the selling point. Here, a multiple hurdle approach was applied: (1) Natural antimicrobials - organic acids (malic, lactic and tartaric acids; MA, LA, TA, respectively) and plant extract (grape seed extract, GSE) and (2) Application method - Electrostatic spraying, was …

Electrostatic Spray Application Of Food-Grade Organic Acids And Plant Extracts To Decrease Escherichia Coli O157:H7 And Salmonella Typhimurium On Select Produce, Leighanna Maeree Massey

Graduate Theses and Dissertations

Both consumers and suppliers have been negatively affected by an increase in foodborne pathogens contaminating fruits. Consequently, there is a need for the development of more efficient antimicrobials and application techniques to decrease contamination. Natural preservatives such as organic acids and plant extracts have demonstrated promising results in decontaminating produce. In addition, the effectiveness of such preservatives may be enhanced by the use of an electrostatic sprayer. The objective of this research was to determine the combinations and concentrations of organic acids and plant extract that were able to reduce Salmonella Typhimurium (ST) and Escherichia coli O157:H7 (EC) inoculated fruits …

Analysis Of Social Networks In A Virtual World, Gregory Thomas Stafford

Graduate Theses and Dissertations

As three-dimensional virtual environments become both more prevalent and more fragmented, studying how users are connected via their avatars and how they benefit from the virtual world community has become a significant area of research. An in-depth analysis of virtual world Social networks is needed to evaluate how users interact in virtual worlds, to better understand the impact of avatar Social networks on the virtual worlds, and to improve future online Social networks.

Our current efforts are focused on building and exploring the Social network aspects of virtual worlds. In this thesis, we build a Social network of avatars based …

Examining The Relations Among Trauma, Distress, Resilience, And Physical Health, Kathryn Elizabeth Chaisson

Graduate Theses and Dissertations

This study examined the role of traumatic distress as a mediator in the relation between trauma exposure and somatic malaise and healthcare utilization. Resilience was examined as a moderator between trauma exposure and somatic malaise and healthcare utilization, then between trauma exposure and traumatic distress. A total of 206 female participants recruited from an obstetrics and gynecology specialty practice completed measures of trauma exposure, traumatic distress, resilience, somatic malaise, and healthcare utilization. Multiple hierarchical regressions were performed to test the hypothesized relations. Results indicated that trauma exposure was a significant predictor of traumatic distress and resilience, and of somatic malaise …

"There Were High Hopes And High Projections:" Examining The Social Construction Of Target Populations In The Policy Design Of The Arkansas Lottery Legislation, Kristopher D. Copeland

Graduate Theses and Dissertations

Lottery policies have been created by many states to generate additional funds to support public initiatives, such as higher education scholarships. In 2009, Arkansas adopted a lottery to generate higher education scholarships. The purpose of this qualitative case study was to examine the Arkansas state lottery policy design process to better understand how the Social construction of higher education students and other citizens became embedded within the policy. The Social construction of target populations theory (Ingram & Schneider, 1993), guided three research questions regarding how policy actors in Arkansas Socially constructed citizens while designing lottery legislation, how these Social constructions …

Perceived Impact Of Character Education Program At A Midwest Rural Middle School: A Case Study, Sandra Jean Goss

Graduate Theses and Dissertations

Today there exist a concern for the safety and success of students in the public education system. Families, educators, and community members are concerned with the physical, emotional, and mental well-being of students in an environment where incidents of violence are growing. Events like the school shootings at Jonesboro, Arkansas, and at Columbine High School left our nation concerned with the problems within the school system. Many believe that character education can be an effective solution. The purposes of this study are to describe key elements of one school's character education program, and to determine the impact that this program …

Investigation Of The Effects Of Rapid Thermal Annealing On Mbe Grown Gaasbi/Gaas Heterostructures For Optoelectronic Devices, Perry C. Grant

Graduate Theses and Dissertations

High efficiency optoelectronic devices rely on high quality materials making up the device structure. The scope of this thesis investigates the effectiveness of rapid thermal annealing (RTA) at improving the material quality of GaAsBi/GaAs heterostructures. During the fabrication of a device, the contacts of the device had the rapid thermal annealing process accomplished to produce ohmic contacts and this research explored if this annealing treatment degraded the quantum wells that made up the active region of a device. To investigate these effects, a system to measure the photoluminescence of the material system was constructed utilizing Fourier Transform Infrared Spectroscopy. The …

The Mechanisms Of Interpersonal Privacy In Social Networking Websites: A Study Of Subconscious Processes, Social Network Analysis, And Fear Of Social Exclusion, Bryan I. Hammer

Graduate Theses and Dissertations

With increasing usage of Social networking sites like Facebook there is a need to study privacy. Previous research has placed more emphasis on outcome-oriented contexts, such as e-commerce sites. In process-oriented contexts, like Facebook, privacy has become a source of conflict for users. The majority of architectural privacy (e.g. privacy policies, website mechanisms) enables the relationship between a user and business, focusing on the institutional privacy concern and trust; however, architectural privacy mechanisms that enables relationships between and among users is lacking. This leaves users the responsibility to manage privacy for their interpersonal relationships. This research focuses on the following …

The Development Of A Traumatic Brain Injury Bioreactor, Zachery Heller

Graduate Theses and Dissertations

Approximately 1.7 million Americans experience a traumatic brain injury (TBI) each year. Concussive injuries are a subset of TBI in which blows to the head cause the brain to collide against the interior of the skull. Damage to the neurons, supporting cells, and surrounding extra cellular matrix resulting from these collisions can lead to permanent physical, cognitive, and psychological impairment. We believe the prevalence and clinical significance of concussive injures warrants research investment. To study brain injury following TBI, in vivo models have been the gold standard for TBI experiments. Although a valuable research alternative, animals are expensive, raise ethical …

An Open Source, Line Rate Datagram Protocol Facilitating Message Resiliency Over An Imperfect Channel, Christina Marie Smith

Graduate Theses and Dissertations

Remote Direct Memory Access (RDMA) is the transfer of data into buffers between two compute nodes that does not require the involvement of a CPU or Operating System (OS). The idea is borrowed from Direct Memory Access (DMA) which allows memory within a compute node to be transferred without transiting through the CPU. RDMA is termed a zero-copy protocol as it eliminates the need to copy data between buffers within the protocol stack. Because of this and other features, RDMA promotes reliable, high throughput and low latency transfer for packet-switched networking. While the benefits of RMDA are well known and …

Steady-State Switching And Dispersion/Absorption Spectroscopy Of Multistate Atoms Inside An Optical Ring Cavity, Jiteng Sheng

Graduate Theses and Dissertations

This thesis mainly focuses on the experimental investigations of electromagnetically induced transparency (EIT) related phenomena in various systems involving multilevel atoms inside an optical ring cavity. Semiclassical methods, e.g. density-matrix equations, are used through out this thesis to simulate the experimental results. First, the cavity transmission spectrum can be significantly modified when multilevel atoms are placed inside an optical ring cavity. Such coupled atom-cavity systems are well explained by the intracavity dispersion/absorption properties. Specifically, three-level lambda-type, four-level N-type and double-lambda-type atoms inside an optical ring cavity are investigated by examining their cavity transmission spectra. Second, optical multistability (OM) has been …

Tin Sensitization For Electroless Plating, Xingfei Wei

Graduate Theses and Dissertations

The tin sensitization process has been used in electroless plating since 1940s Brenner and Riddell developed the electroless plating for surface metallization method. It was found to be an interesting topic to study tin sensitization for chemically controlling metal deposition on different substrates, because the tin sensitization process had critical effects on the electroless plated metal thin films. Nowadays electroless plating metal deposition is still an important method for depositing metals. It has a few advantages over the vapor deposition and electrodeposition method, such as work in an ambient condition, on nonconductive substrates, and without extra power input. Applying electroless …

Identifying Emerging Researchers Using Social Network Analysis, Syed Masum Billah

Graduate Theses and Dissertations

Finding rising stars in academia early in their careers has many implications when hiring new faculty, applying for promotion, and/or requesting grants. Typically, the impact and productivity of a researcher are assessed by a popular measurement called the h-index that grows linearly with the academic age of a researcher. Therefore, h-indices of researchers in the early stages of their careers are almost uniformly low, making it difficult to identify those who will, in future, emerge as influential leaders in their field. To overcome this problem, we make use of Social network analysis to identify young researchers most likely to become …

Political Motive And Bail: The Effect Of Prosecutorial Strategies On Pretrial Decisions In Federal Terrorism Trials, Michael John Clanton

Graduate Theses and Dissertations

The purpose of this study is to understand how prosecutorial strategies affect pretrial decisions in U.S. terrorism trials and how pretrial decisions in turn affect the disposition of those trials. This research builds off of the work of Smith and Damphousse (1996) which compared terrorism indictees to traditional federal offenders. They found that the use of explicit politicality as a prosecution strategy was a significant predictor of both disposition and the sentence length in terrorism trials. This study focuses on the question of whether the use of an explicitly political prosecution strategy impacts pretrial decisions in terrorism cases and whether …

The Relationships Between `Push' And `Pull' Factors Of Millennial Generation Tourists To Heritage Tourism Destinations: Antebellum And Civil War Sites In The State Of Arkansas, Kayla Diane Kesterson

Graduate Theses and Dissertations

This study investigated `push' and `pull' motivational factors which influence Millennial Generation tourists' decisions to visit heritage tourism destinations and their knowledge of Civil War and Antebellum heritage sites within the state of Arkansas. A descriptive, six-section survey was distributed to Millennial students from varying degree fields at three universities within Arkansas. Four hundred twenty-four participants completed the questionnaire with measures of demographic information, visitation and frequency to heritage tourism sites, push factors, pull factors, heritage tourism sites in Arkansas, and historic preservation participation.

The results of this study showed that although Millennial students do not visit heritage sites frequently, …

An Experimental And Computational Evaluation Of The Importance Of Molecular Diffusion In Gas Gravity Currents, Jeremy Jac Herman

Graduate Theses and Dissertations

The accidental release of hazardous, denser-than-air gases during their transport or manufacture is a vital area of study for process safety researchers. This project examines the importance of molecular diffusion on the developing concentration field of a gas gravity current released into a calm environment. Questions which arose from the unexpectedly severe explosion in 2005 at Buncefield, England were of particular interest. The accidental overfilling of a large tank with gasoline on a completely calm morning led to a massive open air explosion. Forensic evidence showed that at the time of ignition, a vapor cloud, most of which now appears …

Evaluation Of Shake Weight Protocol In Senior Populations, Isaac F. Cook

Graduate Theses and Dissertations

The Shake Weight® (SW®) is designed to improve muscular fitness in a quick and inexpensive way. This study aimed to determine if the SW® was an effective tool at improving muscular fitness, body composition, and bone mineral density (BMD) in post-menopausal women. Participants were 17 healthy, post-menopausal women from aMidwestern University and divided into two training (SW® and HIT) interventions that lasted 10 weeks. HIT participants performed three sets of 8 repetitions at 80% of their estimated 1RM for the chest press, leg press, lat pulldown, and seated row. SW® participants performed the exercises prescribed by the SW® manufacturer. Changes …

Apakah Kreativitas Dan Sikap Terhadap Ilmu Ekonomi Meramalkan Partisipasi Politik Mahasiswa? Peran Mediasi Efikasi Politik Pada Mahasiswa Di Malang, Jawa Timur, Juneman Abraham, Diantini Ida Viatre

Makara Human Behavior Studies in Asia

This research aims to find the psychological mechanism of students’ political participation. The research was designed with predictive correlational design and the data analysis technique was path analysis. The dependent variable was political participation intention. The predictor variables were creativity and students’ attitude toward economics. The mediator variables were the necessary political experience and political efficacy. One hundred and four students of Department of Psychology, FPPsi, Malang State University, participated (Mage = 19.50 years old; SDage = 2.397 years). The research found that creativity and attitude toward economics are significant predictors for students’ political participation intention and this prediction is …

Bridging Patient Outcome Gap For Type 2 Diabetes : Can We Bridge Physician Practices To Produce Results Achieved In Evidence-Based Lifestyle Intervention Research?, Brenda Killen Johnson

Theses, Dissertations and Culminating Projects

The United States is abounding in the prevalence and incidence of avoidable chronic diseases, and high among these diseases is type 2 diabetes. Further, according to the National Institute of Health (NIH) Common Fund, 40% of harmful health behaviors is what contributes to chronic diseases, such as type 2 diabetes. NIH noted there are few personalized, effective ways to inspire people to change their behaviors in the shortterm, but if done, this behavior is not sustained long-term (The NIH Common Fund, 2011). Yet, this research discovered a Diabetes Prevention Program (DPP) is one of these few personalized, effective interventions that …

Framing Of Business In China: East Vs. West, Xueyi Li

Electronic Theses and Dissertations

China is one of the largest and most promising markets for new global business ventures. This exploratory research investigates the current news-related themes regarding business in China by comparing news originating from eastern countries to western countries. This study applied agenda-setting and framing theoretical frameworks. A mixed-method approach of both qualitative and quantitative content analyses was used to generate key themes and their related concepts. The results indicate some thematic similarities as well as differences in agenda and news framing between eastern and western news samples. This exploratory study contributes to agenda-setting and framing literature as well as by creating …

Feminising Schools In The Emirate Of Abu Dhabi, Uae: Cause For Concern!, Martina Dickson, Johann Le Roux

Journal of Educational and Psychological Studies

Schools in the UAE have been undergoing radical educational reform over the past six years. Government schools are currently gender segregated from grade 1 and staffed by either male or female teachers, but not by both genders in the same school. In 2011 the Abu Dhabi Educational Council (ADEC) announced plans to completely feminise primary schools in the emirate. Emirati male teachers represent a small minority, but one which potentially has a very powerful significance, both culturally and educationally. This paper intends to explore male pre-service teachers’ perceptions of this issue. Six male Emirati pre-service teachers were interviewed. Our findings …

Understanding Undergraduate Students' Perceptions Of International Teaching Assistants, Asma Anis Khan

Dissertations

The purpose of this mixed method study was to better understand undergraduate students' perceptions of international teaching assistants (ITAs) at a major research institution. For the purpose of this inquiry data were collected from surveying a sample of 436 of undergraduate students from different colleges and at different class levels. Survey data were analyzed both qualitatively and quantitatively. Through the qualitative analysis of the open-ended survey data, undergraduate students' perceptions were derived from their responses, which resulted in themes both established in previous research (e.g., language), and original ideas (e.g., learning to understand ITAs language). Qualitative analysis of the survey …

The Effect Of The Missouri Safe School Act Of 1997 On Alternative Education Students: A Qualitative Analysis, Randall Gene Rhodes

Dissertations

Because of a perceived increase in school related violence, a political reaction occurred in Missouri that led in 1997 to the Missouri Safe Schools Act. This new law significantly changed school disciplinary policy and allowed administrators to move large groups of students to alternative education programs, or expel them to the streets. The purpose of this qualitative study was to learn from students who attended at least one year in an alternative education program about their experiences. I interviewed 26 former students and another 14 former students entered into the conversation by posting their thoughts on a Facebook site for …

Organizations, Religion, And Legal Mobilization: The Case Of Christian Conservative Legal Advocacy, Daniel Bennett

Dissertations

This dissertation is a study of a social movement based on the organizations that define that movement, with specific attention to Christian conservative legal organizations (CCLOs) and their advocacy for the Christian Right in American politics. I ask, how do these organizations differ from one another in their advocacy efforts? How is this movement industry structured with respect to organizational networks? And how do the differences and variation among these organizations affect the dynamics among these groups? That is, how do organizations interact in the confines of a shared movement? This study addresses the literatures on law and society, religion …

Ironic American Exceptionalism And The Myth Of The Open Self, Myron Moses Jackson

Dissertations

This work rethinks current interpretations of American exceptionalism, emphasizing dynamic relations, especially those we could call "ironic." I am reading Reinhold Niebuhr's The Irony of American History alongside Eric Voegelin's and Woodrow Wilson's philosophical and political treatment of freedom, expressed through the ideal of American personhood. American entertainment continues to spread globally, and the spreading creates a wider nexus of efficacious relations, allowing for the interplay of hidden relations and symbolic complexes. "Ironic American exceptionalism," as I call it, highlights the positive aspects, usually overlooked, provided by "virtual integration" and the spawning of novel cultural hybrids. By "virtual integration," I …

Investigating The Impact Of Orientation And Detected Characteristics Of First-Time Online Students On Their Success Rate In A Community College Setting, Reginald C. Akpom

Dissertations

It is evident that the failure rate is higher among online students than in-class students at Hopkinsville Community College. An analysis of the academic records of students who enrolled in online courses for the first time at Hopkinsville indicated a 13% higher withdrawal and failure rate than those who took in-class courses over the same period between 2000 and 2010. Colleges are taking potentially all of the necessary steps to reduce the student failure rates among online students because high withdrawal and failure rates often reflect badly on the quality of education by the providing institutions (C. Segura, personal communication, …

A Simple Integration Of Social Relationship And Text Data For Identifying Potential Customers In Microblogging, Guansong Pang, Shengyi Jiang, Dongyi Chen

Research Collection School Of Computing and Information Systems

Identifying potential customers among a huge number of users in microblogging is a fundamental problem for microblog marketing. One challenge in potential customer detection in microblogging is how to generate an accurate characteristic description for users, i.e., user profile generation. Intuitively, the preference of a user’s friends (i.e., the person followed by the user in microblogging) is of great importance to capture the characteristic of the user. Also, a user’s self-defined tags are often concise and accurate carriers for the user’s interests. In this paper, for identifying potential customers in microblogging, we propose a method to generate user profiles via …

A Secure And Effective Anonymous User Authentication Scheme For Roaming Service In Global Mobility Networks, Fengtong Wen, Willy Susilo, Guomin Yang

Research Collection School Of Computing and Information Systems

In global mobility networks, anonymous user authentication is an essential task for enabling roaming service. In a recent paper, Jiang et al. proposed a smart card based anonymous user authentication scheme for roaming service in global mobility networks. This scheme can protect user privacy and is believed to have many abilities to resist a range of network attacks, even if the secret information stored in the smart card is compromised. In this paper, we analyze the security of Jiang et al.’s scheme, and show that the scheme is in fact insecure against the stolen-verifier attack and replay attack. Then, we …

A Solution Hiding In Plain Sight: Special Education And Better Outcomes For Students With Social, Emotional, And Behavioral Challenges, Yael Cannon, Michael J. Gregory, Julie Waterstone

Faculty Scholarship

This Article will contribute to the ongoing dialogue about special education and the IDEA in two ways. First, it will describe patterns that have emerged from our work with individual children and families that shed light on how common IDEA implementation failures increase the risk of poor outcomes for students with social, emotional and behavioral challenges. Critiques of the law and proposals to amend it should be grounded in an understanding of exactly how and why it is falling short of meeting its promise to these children. Our hope is that mapping the common implementation failures we have seen in …