Digital Commons Network^™

Testing Competing Theories To Develop A Linguistic Assessment On Online Extremist Content, Matthew Dean

Theses and Dissertations

The development of threat assessment protocols has largely neglected a theoretical
foundation, leading to a multitude of protocols with little shared in the way of scientific
foundation. The focus of this study is to test components of two theories – Sternberg’s (2018) FLOTSAM Model and Maynard and Benesch’s (2016) Integrated Model of Dangerous Speech (IMDS) – as potential criteria to use in assessing the seriousness of online threats. This study utilized a dataset of 500 open-source online communications linked to the extremist QAnon movement. An EFA was used to pull an empirical model from the data. Three CFA and SEM …

Molecular Dynamics Of High Temperature Hydrogen Attack, Mike Travis Bodden Connor

Theses and Dissertations

High temperature hydrogen attack (HTHA) is a damage mechanism that only affects carbon steel and low alloy material. Most of the data regarding HTHA are experimental-driven. Even though this approach has been successful, there are still much more things that the oil and gas industry does not understand about HTHA. The regions that were considered safe (below the Nelson curves) have experienced catastrophic failure. Our research consists of performing Molecular Dynamics (MD) and the Nudge Elastic Band (NEB) calculation of HTHA to better understand the atomistic behavior of this damage mechanism.

Investigation Of The Material Properties Of Poly Pipe Irrigation Tubing For Identifying Performance Characteristics By Thickness, Victor Frank Carey Iv

Theses and Dissertations

Poly Pipe Tubing is widely used in the Mississippi Delta for supplemental irrigation of crops during the growing season. Computerized Hole Selection (CHS) is a tool used to create a prescriptive hole punching map to manage flow and minimize tail-water runoff. Some producers have documented that CHS does not work on their farm. The common thought of failure in poly pipe tubing is the rupturing or splitting of the tubing. This research was based on the thought that failure occurs before the tubing is ruptured and is caused by over pressurization during an irrigation event. Static testing revealed that there …

Towards Structured Planning And Learning At The State Fisheries Agency Scale, Caleb A. Aldridge

Theses and Dissertations

Inland recreational fisheries has grown philosophically and scientifically to consider economic and sociopolitical aspects (non-biological) in addition to the biological. However, integrating biological and non-biological aspects of inland fisheries has been challenging. Thus, an opportunity exists to develop approaches and tools which operationalize planning and decision-making processes which include biological and non-biological aspects of a fishery. This dissertation expands the idea that a core set of goals and objectives is shared among and within inland fisheries agencies; that many routine operations of inland fisheries managers can be regimented or standardized; and the novel concept that current information and operations can …

The Emerging Value Of The Viroid Model In Understanding Plant Responses To Foreign Rnas, Junfei Ma

Theses and Dissertations

RNAs play essential roles in various biological processes. Mounting evidence has demonstrated that RNA subcellular localization and intercellular trafficking govern their functions in coordinating plant growth at the organismal level. Beyond that, plants constantly encounter foreign RNAs (i.e., RNAs from pathogens including viruses and viroids). The subcellular localizations of RNAs are crucial for their function. While numerous types of RNAs (i.e., mRNAs, small RNAs, rRNAs, tRNAs, and long noncoding RNAs) have been found to traffic in a non-cell-autonomous fashion within plants, the underlying regulatory mechanism remains unclear. Viroids are single-stranded circular noncoding RNAs, which entirely rely …

Non-Traditional Adjuvants And Methods For Applying Root-Promoting Compounds In Commercial Cutting Propagation, Anthony Turner Bowden

Theses and Dissertations

The nursery/greenhouse industry is innovative. There have been several reports in the popular literature of non-traditional adjuvants used in plant propagation; however, these claims have never been evaluated in a scientific setting. Five studies, conducted at the South Mississippi Branch Experiment Station in Poplarville in 2019 and 2021 determined the impact that adding honey to water-soluble auxin solutions and surfactants to foliar applied auxin solutions on physiological responses associated with adventitious root formation. Treatments in studies presented in chapters two and three included three honey sources (multiflora, local, and Manuka). Honey-infused water-soluble auxin solutions affected plant species but not in …

Evaluation For Using Expended Bioelectrochemical Systems As Soil Amendments For Improved Corn Plant Growth And A Drought Resistant Soil., Jackson Lee Sauers

Theses and Dissertations

A long-held practice is to mix agricultural soil with a soil amendment to improve growing conditions in crops. A common soil amendment is biosolids produced from both municipal and dairy wastewater due to the macro- and micronutrients within it. Both the agricultural and wastewater industries are participating in the Circular Economy concept (CEC). Two experiments explored using expended bioelectrochemical systems (BES) that treated either synthetic dairy wastewater (DWW) or synthetic municipal wastewater (SWW) as soil amendments to improve corn plant growth when treated with three different nutrient treatments: 100%- 50%- and 0% Hoagland Nutrient Solutions. Biochar and used terracotta clay …

The Effect Of Childhood Maltreatment On Psychotherapy Effectiveness In Adulthood: Implications For Counselors, Michael Hillerman

Theses and Dissertations

Recent gains in understanding the effects of childhood maltreatment on the development of the brain and nervous system, combined with the revelation that nearly all psychiatric neuroimaging studies have had an unrecognized confound in childhood maltreatment, imply the possibility that psychotherapy treatment effectiveness studies have been similarly confounded by childhood maltreatment. This study examines whether treatment-seeking adults exposed to childhood maltreatment respond differently to psychotherapy than do individuals who report no history of childhood maltreatment. Response to therapy is conceptualized in this study as reduction in symptom measures pre- and post- treatment, as well as client dropout. It is hypothesized …

From The Sky To The Smartphone: Communicating Weather Information In A Digital Age, Cole M. Vaughn

Theses and Dissertations

As new technology has emerged in the digital era, the public can now choose from a variety of new media from which to get weather information. Weather applications (apps) and social media have emerged as some of the popular new media. This study sought to understand the extent to which these new media are used, how weather apps are perceived, how the news media used Twitter during Hurricane Irma, and how the public engaged with the news media’s tweets. A survey and dataset of tweets were used to evaluate the research questions and hypotheses of this research. The study found …

Oxidized Fibrin Alginate Microbeads To Treat Vascular Calcification, Brittany Nichole Macha

Theses and Dissertations

Calcification is linked to a high prevalence of cardiovascular events and mortality due to arterial stiffness. Stiffening of the arteries in the case of medial calcification is due to hydroxyapatite mineral deposited in the artery thus leading to the loss of elastin. A possibility of removing this rogue mineral along the vessel walls could be the use of osteoclasts. Osteoclasts, a type of osteocyte, have the unique ability to absorb bone in the bone turnover process. It is proposed that in the future, osteoclasts be delivered to the site of mineralization through oxidized alginate-fibrin microbeads. Alginate hydrogels have proven great …

Examining The Malleability And Influence Of Attributions On Discipline Responses To Child Misbehavior, Jenna E. Russo

Theses and Dissertations

Attributions of child behavior have been shown to influence discipline responses and ultimately, child developmental trajectories. Research highlights various social-psychological factors in the formation of attributions, largely characterized as stable. However, research also demonstrates the efficacy of attribution retraining (AR) programs in restructuring individuals’ explanations for various outcomes. This study examined a trauma-informed training intervention with an AR component designed to evoke balanced and contextual attributions of child behavior among child-serving professionals. Of particular interest was the malleability and stability of attributions, and their influence on discipline responses. From pre- to post-training, there was a significant decrease in hostile attributions …

Mobile Learning: Examining The Relationships Between The Use Of Mobile Devices And Student Performance In Ela And Math Within Technology And Non-Technology Districts, Gabrielle S. Jones

Theses and Dissertations

Mobile and other internet-connected devices infiltrate society, including K-12 classrooms. A large body of research indicated that these devices might distract students; however, other studies have revealed many benefits when the devices are used for educational purposes. This study aimed to examine the relationships between the use of mobile devices and student performance in mathematics (MA) and English Language Arts (ELA). The study compared two districts, one that had implemented a 1:1 technology infrastructure for learning and one that had not. Archival data on the Mississippi Academic Assessment Program (MAAP) standardized test were accessed from the two districts, containing fourth-grade …

Development Of A Novel Loop-Mediated Isothermal Amplification (Lamp) Assay For The Rapid Detection Of Clostridium Perfringens, Deepa Chaudhary

Theses and Dissertations

Clostridium perfringens (C. perfringens) causes diseases such as necrotic enteritis in poultry. Current methods for early detection of C. perfringens, including culture, and molecular techniques (PCR and qPCR), have logistical limitations in detecting pathogens on-site because they require specialized equipment and long sample preparation time. This study describes developing a highly sensitive on-site LAMP assay combined with a simple DNA extraction method to detect C. perfringens. Results showed that the LAMP assay was highly specific and sensitive with the optimal reaction conditions: 63°C for 30 mins with primer concentration of 1.2 mM FIP/BIP and 0.2 mM F3/B3. The HotSHOT method …

Disease Resistance And Productivity In Genetically Improved Loblolly Pine: Results From A Resistance Screening Trial And A Midrotation Comparison Of Genetic Improvement Levels, Stephen W. Goodfellow

Theses and Dissertations

Decades of tree improvement has resulted in genetic gains in loblolly pine productivity, form, and resistance to fusiform rust. The goal of this study was to advance the understanding and applied use of genetic improvement by analyzing inter- and intra-provenances hybrids’ rust resistance and evaluating midrotation performance of varying levels of genetically improved stock types. The first study compares 16 seedlots at the USDA Resistance Screening Center and evaluates rust resistance of controlled-pollinated inter- and intra-provenances crosses, and openpollinated seedlots from three provenances: Western Gulf, Atlantic Coastal, and Interior Piedmont. Post inoculation, one Coastal OP seedlot was resistant and ten …

Resiliency Of Levee-Protected Power Networks To Flooding In A Changing Climate Integrating Environmental Justice, Seyed Saeed Miraee-Ashtiani

Theses and Dissertations

Electric power system (EPS) is an integral part of infrastructure systems. Ensuring its resiliency to extreme weather events and natural hazards is crucial to protect the safety, economy and public health. Recorded and projected data show an increase in the frequency and severity of extreme weather events and natural hazards attributed to a changing climate. It is critical to ensure the integrity of the aging infrastructure systems and to promote environmental justice by shrinking the energy-equity gap to lower power outages in disadvantaged communities.

An important aspect is the resiliency interdependency of EPS to other critical infrastructure systems, an aspect …

Seasonal Trends And Sampling Time Of Day On Overall Microbial Population And Indicator Organisms In Catfish Parts And Catfish Processing Environment, Maria Gabriela Hidalgo-Sindoni

Theses and Dissertations

Commercial production of catfish is the leading aquaculture industry in the United States. Production in Mississippi, Louisiana, Alabama, and Arkansas representing 96% of the total catfish sales in the USA. In 2017, the USDA-FSIS added testing of generic Escherichia coli and Enterococcus to the sampling of Siluriformes. The incidence of Escherichia coli in fish and seafood has been associated with possible fecal matter contamination. However, this indicator bacteria could also be a part of the natural microflora of catfish ponds where processing plants collect hybrid catfish. Aerobes, Psychrotrophs, Coliforms, Escherichia coli, and Enterobacteriaceae counts among environmental, liquid and fish …

Metagenomic Analysis Of Root-Associated Microbiome Of Healthy And Taproot Decline-Affected Soybeans And Identification Of Healthy Soybean Root Endophytes With Protective Activity Against The Causal Agent, Xylaria Necrophora, Uyen Wesser

Theses and Dissertations

Plant roots are associated with a diverse microbial community of bacteria and fungi. The root microbiome communities associate with the root surface or penetrate the superficial layers of root tissues. It is of high agronomic interest to characterize root microbiomes and identify microbes with beneficial effects on plant defense against pathogens. Soybean taproot decline (TRD) is an emerging soil-borne disease caused by a fungus classified as Xylaria necrophora, challenging to control and with devastating effects on yield. Our group has initiated a study of the soybean root microbiome with three primary experiments: (I) perform a comparative study of root …

Development Of Alternative Air Filtration Materials And Methods Of Analysis, Ivan Philip Beckman

Theses and Dissertations

Clean air is a global health concern. Each year more than seven million people across the globe perish from breathing poor quality air. Development of high efficiency particulate air (HEPA) filters demonstrate an effort to mitigate dangerous aerosol hazards at the point of production. The nuclear power industry installs HEPA filters as a final line of containment of hazardous particles. Advancement air filtration technology is paramount to achieving global clean air. An exploration of analytical, experimental, computational, and machine learning models is presented in this dissertation to advance the science of air filtration technology. This dissertation studies, develops, and analyzes …

Process Development In Facilities Management Sector, Mohammad Zaher Aldiek

Theses

This capstone project focuses on the enhancement and optimization of different aspects within the facilities management department of Dubai Developments, which is a leading real estate company in Dubai. Considering the huge number of buildings owned by the company and that the facilities management department was recently formed, there are still opportunities of improvement in terms of saving energy, growing productivity, improving operations processes and promoting sustainability. To do so, this capstone project focused on developing four main aspects within the FM department to ensure achieving the abovementioned objectives. Firstly, a retrofit project was implemented on the cooling system of …

Process Development In Facilities Management Sector, Mohammad Zaher Aldiek

Theses

This capstone project focuses on the enhancement and optimization of different aspects within the facilities management department of Dubai Developments, which is a leading real estate company in Dubai. Considering the huge number of buildings owned by the company and that the facilities management department was recently formed, there are still opportunities of improvement in terms of saving energy, growing productivity, improving operations processes and promoting sustainability. To do so, this capstone project focused on developing four main aspects within the FM department to ensure achieving the abovementioned objectives. Firstly, a retrofit project was implemented on the cooling system of …

Hydraulic Redistribution Under Saline Conditions, Josh Gottlieb

Civil and Environmental Engineering Undergraduate Honors Theses

Water scarcity and soil salinity are dual stressors for plants in arid, salt-affected ecosystems. Hydraulic redistribution, a hydraulic adaptation which moves water through plant roots into dry or saline soil regions along potential gradients, aids plant survival in stressful environments. Recent theory regarding hydraulic redistribution proposes limitations on the process within saline soils. This study applies a minimalist resistor-capacitor model of the soil-plant-atmosphere system to the experimental conditions of a 2010 study investigating hydraulic redistribution in a salt affected area. The effectiveness of the model is evaluated, and a sensitivity analysis is conducted to identify key dynamics affecting the moisture …

Investigation Of Heavy Metals Removal From Aqueous Solutions By Ceramic Filters, Gehan Mostafa Kotb Tolba, Ali Gad, Abdallah Mohammed, Ahmed Farghaly Farghaly

Mansoura Engineering Journal

The study utilized the membrane filtration technique to remove two common heavy metals from aqueous solutions; the first was Pb+2, and the second was Cd+2. Manufacturing of ceramic filters was carried out through the dimensions of 20 by 20 cm and thickness of 4 cm from local clay and sawdust at different percentages of sawdust: 1.0%, 2.5%, and 4.0%. The study examined the key factors affecting the removal efficiency of the ceramic filters, such as the initial pH value (5.5 and 7.0) and initial concentration (5.0 and 10.0 mg/L) of heavy metals at a constant pressure head of 30 cm. …

Zur And Zinc Increase Expression Of E. Coli Ribosomal Protein L31 Through Rna-Mediated Repression Of The Repressor L31p, Rebecca A Rasmussen, Suning Wang, Jeannie M Camarillo, Victoria Sosnowski, Byoung-Kyu Cho, Young Ah Goo, Julius B Lucks, Thomas V O'Halloran

2020-Current year OA Pubs

Bacteria can adapt in response to numerous stress conditions. One such stress condition is zinc depletion. The zinc-sensing transcription factor Zur regulates the way numerous bacterial species respond to severe changes in zinc availability. Under zinc sufficient conditions, Zn-loaded Zur (Zn2-Zur) is well-known to repress transcription of genes encoding zinc uptake transporters and paralogues of a few ribosomal proteins. Here, we report the discovery and mechanistic basis for the ability of Zur to up-regulate expression of the ribosomal protein L31 in response to zinc in E. coli. Through genetic mutations and reporter gene assays, we find that Zur achieves the …

International Comparative Education: A Case For Russia, Kirill A. Strakhov

Pepperdine Policy Review

Moscow State University (MSU) in Russia does not have an adequate general education curriculum as part of the undergraduate requirements. The curriculum does not cover classical topics such as the exploration of human nature. At the college level, Russian students are not able to change their specialization even as freshmen. The policy recommendations are going to be grounded on the various philosophical understanding of education and its role in our society. MSU should include more open discussion seminars in order to develop crucial virtues of character. At the same time, MSU should implement a general education curriculum, which would keep …

Webs Of Proximity And Just-In-Time Information, Carrie A. Boettcher, Laurie J. Bonnici, Brian C. O'Connor

Proceedings from the Document Academy

Disciplinary webs of proximity frequently overlap at the periphery of a topic where interests intersect for problem-solving. Failure to account for disciplinary differences can result in dis-ease – tension that interferes with meaning-making. This can be especially problematic in just-in-time information settings. An unexpected social media case study involving severe weather reporting and algorithm-driven system censorship makes evident the role of a constellation of pragmatic factors that can enhance or hinder just-in-time information delivery. Employing webs of proximity, we probe the severe weather censorship event with complementary bodies of knowledge and disciplinary perspectives. Intersectionalities are discussed through lenses of proximity …

Terminally Ill Documents: The Lasting Impact Of Ephemera, Deama Khader

Proceedings from the Document Academy

Murals and portraits of cultural icons such as George Floyd and Ahed Tamimi are more than aesthetically engaging objects. They can inspire viewers to act, attend protests, and share their own feelings on an issue, whether that be in the form of more street art or something as simple as a social media post. This is often how social and political movements are made.

Street art poses a unique challenge to information professionals since the documents that are created with the intention or expectation of disappearance. They are documents suffering from terminal illness. Their ephemerality is their disease. Per the …

Documents And The Malady Of Truth, Ronald E. Day

Proceedings from the Document Academy

This article discusses documents, knowledge, and truth through a conceptual examination and through an examination of Flaubert's 19th century novel Madame Bovary. It argues that the main characters of Madame Bovary deceive themselves by believing that the contents of the fictional and medical texts they read convey truth. In contrast, the article argues that modern knowledge is constituted by documentary evidence operating in knowledge networks and processes where the result of such operations is what can be claimed to be true about the world through such processes. The representational malady that Madame and Doctor Bovary suffer in the novel was …

“Arsip Kacau”: How Messy Records Are Perceived By Indonesians In The Context Of Document Disease, Suprayitno Suprayitno, Rahmi Rahmi, Dian Novita Fitriani

Proceedings from the Document Academy

This paper examines how the Indonesian people perceive and construct arsip kacau (messy records). Messy records as documents seem to have the power to make humans psychologically ill by becoming uneasy, discomfort, stressed, burnout, and uncomfortable, all of which are diseases. This is similar to documentality introduced by Frohmann that documents can enable, produce, encourage, permit, and influence a person to experience document disease. This paper uses a qualitative approach with data collection in the form of literature and surveys from Indonesian people. The perception of archivists and the general public in Indonesia concerning the cause of the “messy records” …

Artificial Intelligence And The Preservation Of Historic Documents, Gaute Barlindhaug

Proceedings from the Document Academy

In recent decades, digitization has been presented as an important strategy both for the preservation of historic documents and for giving increased access for researchers to such materials. In the Norwegian context, this has not only implied the digitization of printed matter but also the digitization of audiovisual material like photography and analog tape recordings. From a technical perspective, there are of cause difficulties in digitizing such a variety of material when considering the diversity of media formats dating back to the nineteenth century. However, from the archival community criticism has been raised not only about the quality of the …

Document Dimensions Of Imuseum’S Instagram Posts, Ciwuk Musiana Yudhawasthi, Lydia Christiani, Widya Damayanti

Proceedings from the Document Academy

Social media is source of information during a pandemic. Using virtual ethnography methods and cyber media analysis, this article tries to trace digital cultural artifacts on IMERI iMuseum’s Instagram posts. Digital cultural artifacts that emerged were then analyzed using Buckland's concept of physical, mental and social dimensions of document. The results of the analysis show that cultural artifacts in iMuseum’s IG posts have document dimensions, seen from the physical, mental and social aspects and even a combination of dimensions. In the context of infodemic, through its social media, iMuseum seeks to carry out its role in disseminating information on health, …