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Simmons, Darren AllenOn Lagrangian Algebras in Braided Fusion Categories
Doctor of Philosophy (PhD), Ohio University, 2017, Mathematics (Arts and Sciences)
This work is part of an ongoing study of a generalization of the notion of symmetry. In mathematics, the notion of symmetry is formalized into the concept of a group. Examples of groups arise naturally throughout mathematics, chemistry, physics, and other fields. However, recent developments in high-energy and condensed matter physics show that not all kinds of symmetry that arise in nature can be captured by groups. A versatile, more general tool that does this job is a certain class of tensor categories known as fusion categories. We add to the study of these categories by constructing certain analogues to the classical algebraic notion of an associative algebra over a field inside them, and then expounding the properties of these generalized algebras.

Committee:

Alexei Davydov (Advisor); Sergio López-Permouth (Committee Member); Vladimir Uspenskiy (Committee Member); Kenneth Hicks (Committee Member)

Subjects:

Mathematics

Keywords:

Fusion categories; Braided categories; Group cohomology; Finite groups

Venezia, Shannon M.The Relationship Between Financial Aid and Graduation Rates for Rural Community College Students
Doctor of Philosophy (PhD), Ohio University, 2017, Higher Education (Education)
This study was designed to examine the relationship between financial aid and graduation rates for rural community college students. The main purpose of this study is to help fill the large gap in research that currently exists about rural community college students, and, more specifically, financial aid and rural community college students. This study uses data collected for the 2004/2009 Beginning Postsecondary Student Longitudinal Study (BPS:04/09), as well as data from the Integrated Postsecondary Education Data System (IPEDS). Two research questions focused on the descriptive statistics. Four additional questions used logistic regression for the findings. Two of these questions focused on all community college students, and two questions focused solely on rural community college students. All of the data for the six research questions were analyzed using STATA. The findings from this study are that there is a relationship between financial aid and graduation rates for both all community college students and rural community college students separately. Rural community college students showed the highest graduation rates through six-years for associate degree graduates, and rural community college students had the highest graduation rates through three- and six-years for associate degree and certificate graduates. In terms of financial aid, the Federal Unsubsidized Loan was found to be negatively related to graduation rates for both groups of students. The Pell Grant was found to have a positive association with graduation rates for rural community college students through three-years for associate degree and certificate graduates.

Committee:

Lijing Yang (Committee Chair); Michael Williford (Committee Member); David Horton (Committee Member); Hyun-Ju Oh (Committee Member)

Subjects:

Higher Education; Higher Education Administration

Keywords:

Rural community colleges; financial aid; graduation rates

Ye, EnTeamWATCH: Visualizing Development Activities Using a 3-D City Metaphor to Improve Conflict Detection and Team Awareness
Doctor of Philosophy (PhD), Ohio University, 2017, Electrical Engineering & Computer Science (Engineering and Technology)
Awareness of others’ activities has been widely recognized as essential in facilitating coordination in a team among Computer-Supported Cooperative Work communities. Several field studies on software developers in large software companies such as Microsoft showed that coworker and artifact awareness are the most common information needs for software developers; however, they are also the most frequently unsatisfied information needs. As a result, they may duplicate work, or create conflicts without knowing the status of others and the whole project. To address this problem, we propose a new approach to visualize the developer’s activities using a 3-D city metaphor and implement it in a workspace awareness tool named TeamWATCH (Team based Workspace Awareness Toolkit and Collaboration Hub). TeamWATCH extracts awareness information of artifacts, revisions, and developers from their local workspaces, version control repository, and bug tracking system. It then visualizes both real time and history awareness information together in a 3-D common view shared by the whole team. It also highlights active artifacts that are being changed locally via eye-catching animations and provides the customized personal view for each developer. The main contributions of this dissertation are 1) a 3-D software visualization scheme that improves workspace awareness and enhances team collaboration; 2) the design and implementation of the workspace awareness tool TeamWATCH using this visualization scheme; and 3) evaluations of the effectiveness of such awareness tools using TeamWATCH as an example in maintaining project awareness and detecting and resolving conflicts via three controlled use experiments. The experiment results showed that the subjects using TeamWATCH performed significantly better in software revision history and project evolution comprehension, and early conflict detection and resolution.

Committee:

Chang Liu (Advisor)

Subjects:

Computer Science

Keywords:

Software collaboration; software visualization; workspace awareness

Bodle, Sarah J.Adhesion Based Early Detection of Colorectal Cancer
Master of Science (MS), Ohio University, 2017, Biomedical Engineering (Engineering and Technology)
Colorectal cancer (CRC) is the fourth most diagnosed cancer and the second leading cause of cancer death with 135,430 new cases and 50,260 deaths predicted to occur in the United States in 2017 “Cancer Statistics Center,” ACS Available: http://cancerstatisticscenter.cancer.org/. With current screening tests, the percentage of diagnosis occurring at localized, regional, distant, and unknown stages are 39, 35, 21, and 5 percent with corresponding 5-year survival rates of 90.1, 71.2, 13.5, and 35.5 percent, respectively “Cancer of the Colon and Rectum - Cancer Stat Facts,” NCI Available: https://seer.cancer.gov/statfacts/html/colorect.html. The high mortality rate can be attributed to the percentage of later stage diagnosis. As such, there is a demand for novel diagnostics that increase the percentage of diagnosis occurring at an early stage when the survival rate is most promising. It is possible that a novel diagnostic could be designed based on the increased expression of adhesion molecules on transforming tissue relative to normal tissue. Transforming tissue would be identified by detection constructs consisting of microparticles conjugated to ligands cognate to the adhesion molecules. The detection constructs would be administered to the epithelium of the colorectum via a spray catheter through the biopsy channel of an endoscope during colonoscopy. The broad working hypothesis of this study is that differential expression of adhesion molecules on transforming and cancerous, relative to normal tissue, can be exploited to develop a ligand conjugated particle based in situ diagnostic assay. As a first step, the goal of this thesis was to characterize the expression of sialyl Lewis A (sLeA), sialyl Lewis X (sLeX), and CD44 on transforming and cancerous, relative to normal, cell lines and tissues. Expression levels of CD44 proteins as well as sLeA and sLeX glycans on cancerous relative to normal human colorectal cell lines were quantified by flow cytometry. This analysis revealed that CD44v3 and CD44v5 proteins have increased expression on cancerous relative to normal human colorectal cell lines when identified by anti- CD44v3 mAb 3G5 and anti- CD44v5 mAb VFF-8. In addition, sLeA and sLeX glycans have increased expression on cancerous relative to normal human colorectal cell lines when identified by anti- sLeA mAb KM231, anti- sLeA mAb C241:5:1:4, anti- sLeX mAb CSLEX1, anti- sLeX mAb FH6, and anti- cutaneous lymphocyte antigen (CLA) mAb HECA-452. Expression levels of sLeA and sLeX were characterized on human colorectal tissues by immunohistochemistry. The average percent staining of each core for sLeA is significantly lower on normal tissues and normal adjacent tissues compared to stage I adenocarcinoma tissues when identified by anti- sLeA mAb KM231 and anti- sLeA mAb C241:5:1:4. Results also show the average percent of staining of each tissue core for sLeX is significantly lower on normal tissues and normal adjacent tissues compared to stage I adenocarcinoma tissues when identified by anti- sLeX mAb CSLEX1. Anti- CLA mAb HECA-452 recognizes a carbohydrate domain shared by glycans including sLeA and sLeX. Results show the average percent of each core staining positive for glycans identified by anti- CLA mAb HECA-452 is significantly lower on normal tissues and normal adjacent tissues compared to stage I adenocarcinoma tissues. Interestingly, the results indicate that the average percent of glands staining positive for sLeA is significantly higher on normal tissues compared to neoplasia tissues when identified by anti- sLeA mAb C241:5:1:4. In summary, this thesis revealed differences between the expression of CD44, sLeA, and sLeX on transforming and cancerous versus normal cell lines and tissues. These differences in adhesion molecule expression could be exploited for the design of a novel assay for the diagnosis of colorectal cancer.

Committee:

Douglas Goetz (Advisor); Monica Burdick (Committee Member); David Drozek (Committee Member); Ramiro Malgor (Committee Member); Amir Farnoud (Committee Member)

Subjects:

Biomedical Engineering

Keywords:

colorectal; cancer; diagnostic; CD44; sialyl Lewis A; sialyl Lewis X

Holcombe, Evan W.Multi-Scale Approach to Design Sustainable Asphalt Paving Materials
Master of Science (MS), Ohio University, 2017, Civil Engineering (Engineering and Technology)
The continuous use of recycled material in asphalt pavement mixtures, specifically Reclaimed Asphalt Pavement (RAP), Recycled Asphalt Shingles (RAS) and Re-Refined Engine Oil Bottoms (REOB), have developed an increasing need to further evaluate the performance of these mixtures at the micro and macro-levels, as the use of such materials reduces cost of virgin materials and energy consumption. Although asphalt binder, including recycled or additive materials, may meet a desired performance grade (PG) using macro-scale tests, they may lack critical nano-mechanical properties that largely affect long-term performance, such as adhesion and diffusive efficiency between virgin and recycled binders. These commonly overlooked properties can correlate with performance behaviors such as fatigue and low temperature cracking during field performance. This study was conducted in two major parts. Part one was performed with the intent to evaluate the nano-mechanical and blending-diffusive efficiency of toluene and trichloroethylene extracted RAP and RAS binder using tapping mode imagery and force spectroscopy using Atomic Force Microscopy (AFM). Furthermore, this study was set to correlate the findings from micro-testing to macro-scale laboratory performance tests including Semi-Circular Bending (SCB) to evaluate fatigue cracking resistance at intermediate temperatures, Asphalt Concrete Cracking Device (ACCD) to evaluate low temperature cracking and AASHTO 283 ITS to study moisture damage susceptibility of intermediate course mixtures with high RAP and RAS contents. Results showed that tear-off RAS material have a significant effect on fatigue and low temperature cracking performance, primarily at long-term aged conditions. Neither tear-off nor manufactured waste RAS binder blend well with virgin binder, whereas RAP shows a zone of blending. AFM imaging indicated all extracted RAS binder had a much rougher surface texture than RAP or virgin binders and did not contain any “bee” structures. The procedure of splitting RAP material for sampling during the volumetric mix design process has a significant effect on the optimal virgin binder content design, which in turn has a large effect on performance properties. Part two of this thesis summarizes the results of laboratory tests that were conducted to evaluate the microstructure, adhesion and other mechanical properties of asphalt binders meeting the same Performance Grade (PG) but produced using different processes and modifiers. Atomic Force Microscope (AFM) tapping mode imaging and force spectroscopy experiments were conducted on different straight run and modified asphalt binders meeting the same performance grade. In addition, Bitumen Bond Strength (BBS) and Semi-Circular Beam (SCB) tests were conducted on the different binders evaluated and mixes prepared using those binders, respectively, for comparison. The AFM images indicated that the microstructure of the modified binders was different than those of the straight run binders. The AFM force spectroscopy test results showed that binders with same PG grade could have significantly different adhesion properties. The results of the SCB tests indicated that the fatigue performance was affected by the adhesion properties of the binders evaluated. The AFM bonding energy had a very good correlation with the flexibility index parameter obtained from SCB test results. The results of this part suggests that the adhesion properties of asphalt binders should be included in their evaluation process and specifications.

Committee:

Munir Nazzal, Dr. (Advisor)

Subjects:

Civil Engineering; Materials Science

Keywords:

reclaimed asphalt pavement; recycled asphalt shingles; re-refined engine oil bottoms; atomic force microscopy; fatigue cracking; adhesion; diffusion, moisture damage; thermal cracking

Tams, Sean T.Modeling Longitudinal Associations between Parenting Practices and Child Externalizing Behavior from Pre-school to Adolescence
Master of Science (MS), Ohio University, 2017, Clinical Psychology (Arts and Sciences)
Child externalizing behavior (i.e., defiance, impulsivity, disruptiveness, aggression, delinquency, and hyperactivity) places children at risk for a broad range of adverse outcomes. Parenting has been implicated as a factor in the expression and maintenance of child externalizing behavior, but limitations exist that hinder the interpretation of findings from prior studies of associations between child externalizing behavior and parenting behavior. The current study used a large, nationally representative dataset that included multiple assessment points across child development and multiple informants and methods of assessment to examine the relationships between child externalizing behavior and parenting practices, including the moderating effect of child gender and elevated ADHD/ODD symptoms. Results of cross-lagged path model analyses revealed reciprocal relationships among child externalizing behavior and effective/ineffective parenting practices, though the pattern of results differed slightly between mothers and fathers. Child gender moderated these relationships such that some associations were stronger for males and others were stronger for females. Elevated ADHD/ODD symptoms did not emerge as a robust moderator, though group differences were identified for one model that was tested. These results underscore the need for early intervention that targets elevated child externalizing behavior and ineffective parenting practices, which may help to foster positive parent-child relationships and mitigate the risk of children with these problems developing more severe, clinically significant externalizing symptoms (e.g., ADHD and/or ODD).

Committee:

Brian Wymbs (Advisor); Steven Evans (Committee Member); Julie Owens (Committee Member)

Subjects:

Clinical Psychology; Developmental Psychology

Keywords:

externalizing behavior; parenting practices; child development

Cogar, Jessica L.Pearl Anthology: Prose Poems
Master of Arts (MA), Ohio University, 2017, English (Arts and Sciences)
Pearl Anthology: Prose Poems is a collection of prose poems, preceded by a critical introduction, that explore the ins and outs of queer femininity. The language of these poems borrows signs and symbols from Egyptian myth, augury, and hiking signposts. While utilizing surreal elements and dream logic, the poems aim to document the disorientation of a queer speaker as she tries to navigate a world of painful beauty rituals, queer love, and performative masculinity.

Committee:

Jill Rosser (Advisor); Eric Lemay (Committee Member); Mark Halliday (Committee Member)

Subjects:

Economic Theory

Keywords:

Heterosexuality; formal poetry

Wang, ValerieHumor Usage by Salespeople: A Socio-Psychological Inquiry of Antecedents and Outcomes in Professional Selling
Doctor of Philosophy (PhD), Ohio University, 2017, Individual Interdisciplinary Program
As a cue for laughter in interpersonal communications, humor has been observed in various professional selling occasions. This dissertation aims at quantitatively investigate the antecedents and outcomes of salespeople’s humor usage in sales communications. A research framework with ten hypotheses is built to describe why or when humor messages are created by salespeople, and then why or how humor messages, as an interpersonal sales communication tool, influence various performance outcomes in professional selling. It is proposed that humor usage by salespeople is positively influenced by higher creativity, stronger learning orientation, greater sales effort, and a higher degree of role stress represented by role ambiguity, role conflict, and task overload. In turn, humor usage by salespeople may positively influence customer relationship quality in terms of trust, commitment, and relationship satisfaction, as well as salespeople’s job performance. To test the hypotheses, a series of multiple regression analyses are performed using survey data collected from 407 salespeople. The results provide insights about salespeople humor usage in a number of aspects. First, creative salespeople are more likely to find the appropriate and actionable contextual cues to form humor messages in professional selling. Second, with higher learning orientation through routine observation and interaction with customers, peers, and competitors, salespeople can become more adept at creating humor messages for particular customers and situations. Third, humor usage is a stress reliever for stressed salespeople who encounter role ambiguity. Fourth, through improving customers’ cognitive and affective experiences, salespeople’s humor usage in sales communications ultimately enhances customer relationship quality and job performance. Overall, the findings suggest that salespeople humor usage in sales communications act as a useful marketing mechanism that produces positive organizational outcomes. The new knowledge created by this dissertation not only offers a fresh perspective for researchers, but also shed light on sales management practices and marketing communications.

Committee:

Gregory Newton (Committee Chair); Parul Jain (Committee Member); Catherine Axinn (Committee Member)

Subjects:

Communication; Marketing

Keywords:

Marketing; Sales Communication; Learning Orientation; Creativity; Job Performance; Customer Relationship

Murphy, Julianna E.Catalytic Effect of Iron Oxidizing Bacteria on the Production of Pigment from Acid Mine Drainage
Master of Science (MS), Ohio University, 2017, Civil Engineering (Engineering and Technology)
Abandoned and underground mines have been the known source of a persistent pollutant known as acid mine drainage. Coalmines are abundant in the Appalachian area, which results in multiple heavily polluted streams and waterways. The iron leached from the mines coats the streambeds with a thick orange slurry destroying the aquatic habitat. Specifically, for this research, the Sunday and Raccoon Creek watershed were investigated. The objective of this thesis was to manipulate the environment in order to optimize the growth and catalytic oxidation effects of locally collected iron oxidizing bacteria during the production of a viable iron oxide pigment. Temperature and pH of the environments were controlled to find prime conditions for the bacteria to thrive. While it was found that the pigment created in the lab had minimal hiding power and did not form goethite, the iron oxidized with bacteria oxidized at rates averaging at least 30 times faster than those without at all pH values. Through statistical comparison, it was found that all seeps oxidized iron at a faster rate than the sterile control at a confidence value of 95%. While there was no statistical difference found between the Carbondale Seep’s oxidations rates, both were found to have the faster oxidation rates then Batgate. All oxidation rates were found to be significantly faster at the higher temperature and high pH. The failure in the production of goethite was found to be a consequence of the overabundance of sulfate within the tanks, estimated at least 6 times the concentration at the seeps.

Committee:

Guy Riefler (Advisor)

Subjects:

Civil Engineering

Keywords:

iron oxidizing bacteria; pigment; catalytic effects; oxidation rates

Pollock, Asher WPhase Shift
Bachelor of Fine Arts (BFA), Ohio University, 2017, Studio Art
Phase Shift is the thesis of Asher Pollock, submitted for graduation from the Honors Tutorial College of Ohio University. It contains writing and paintings that collectively question concepts, genres, and methods of story-telling known well to many audiences.

Committee:

Laura Larson (Committee Chair); Jennie Klein (Advisor)

Subjects:

Aesthetics; Art Criticism; Art Education; Art History; Arts Management; Performing Arts; Personal Relationships; Personality; Personality Psychology; Philosophy; Religious History; Rhetoric; Social Research; Spirituality; World History

Keywords:

queer, poseidon, neptune, phase, shift, water, story, stories, painting, paintings, art, artist, man, they, them, gay, men, myth, mythology, mythic, myths, gods, god, family, love, loneliness, despair, ice, independence, conceptual, contemporary, modern

Hockenberry, Jacklyn M.Economic, Social, and Regional Barriers in Appalachian Migration
Master of Arts (MA), Ohio University, 2017, Sociology (Arts and Sciences)
Research suggests that Appalachian migration patterns mirror those of rural migration patterns (Franklin 2003). The young, single, and highly educated tend to leave less prosperous areas in search of economic advancement (Franklin 2003). Understanding migration patterns sheds light on why rural areas might experience high rates of outmigration and issues such as brain drain. However, there is no research examining the migration patterns occurring within distressed and non-distressed regions of Appalachia. My study examines predictors for migration including unemployment rates, age, and educational attainment for distressed and non-distressed counties within Appalachia. Results of regression analysis on county-level and individual-level variables suggest unemployment and educational attainment rates affect migration possibilities out of distressed counties. Additionally, the distressed status of a county can be used as a predictor for migration mobility. Individuals who reside within distressed counties have limited mobility due to the increased likelihood they will end up in a distressed county later in life. Surprisingly, the age of an individual is not a predictor of which county someone is likely to move. In other words, being within the work force age (25-39) does not have a large impact on migration outcome. Examining migration patterns for distressed and non-distressed counties of Appalachia can help to build the literature regarding migration and provide more detail for which counties within Appalachia experience the most outmigration. By understanding which counties are being affected most by migration, new policy can be brought forward to improve residential retention and community life in Appalachian communities.

Committee:

Cynthia Anderson (Committee Chair); Howard Welser (Committee Co-Chair)

Subjects:

Sociology

Keywords:

Appalachia; Distressed; Migration; County-level Migration

Roy, EnakshiSocial Media, Censorship and Securitization in the United States and India
Doctor of Philosophy (PhD), Ohio University, 2017, Journalism (Communication)
Using the theoretical perspectives of Spiral of Silence and Securitization, this dissertation examines (1) how censorship practices such as content removal were employed by the United States and the Indian governments to securitize the internet and social media, and (2) whether such practices contribute to an online spiral of silence. To explore these aspects, this study used a mixed-method approach with in-depth interviews and surveys. Seven interviews with authors of Transparency Reports and legal experts provided information about the U.S. and Indian government-initiated content removal process from Google Web Search, Blogger, YouTube, Facebook and Twitter between 2010 and 2015. Surveys with 587 respondents from the United States and India explored self-censorship on Facebook and Twitter, on issues related to national security and government criticism. The findings indicate that in the United States, “defamation” is the frequently cited yet an often-misused reason for content removal, while in India “religious offense” and “defamation” are prominent reasons for content takedowns. On several occasions, protected speech was removed from the internet and social media in both countries. Such acts of state-level censorship, in turn impacts self-censoring on controversial issues by individuals on social media. The implications here are that using the law to criminalize dissent increases self-censorship and this is counter-productive to democratic discourse.

Committee:

Yusuf Kalyango, Jr., Ph.D. (Committee Chair); Aimee Edmondson, Ph.D. (Committee Member); Eve Ng, Ph.D. (Committee Member); Nukhet Sandal, Ph.D. (Committee Member)

Subjects:

Communication; Information Technology; International Law; Journalism; Legal Studies; Mass Communications; Mass Media; Technology

Keywords:

Transparency Report; Internet censorship; Internet censorship USA, India; Internet Securitization; Spiral of Silence public opinion; public opinion social media; social media censorship; content removal; Google, Facebook, Twitter transparency reporting

Burback, KyleExpanded and Integrated Entries from the Orthogonal Encyclopedia on Nature
Bachelor of Arts, Ohio University, 2017, English
Self-addressed apostrophe within a Leibnizian Modal Realist's world deconstructs a modal self, reassembling it to arrive at the precipice of anotherness. Theoretical implications of the self-addressed apostrophe call solipsistic skepticism (an ontological position claiming only the self exists) into doubt by first pluralizing the self, and then redefining the self in plural terms. Three spheres carry out the deconstruction and reassembly of the self: an anachronistic, timeless sphere in which the plural selves operate, an opening produced by the self-addressed apostrophe; a temporal sphere in which take place the historical events culminating in the apostrophe; and a logical sphere in which conceptual dilemmas are addressed and reconciled. The timeless sphere presents the plural selves' dialogue, which frames the historical sphere. This framing reorganizes the historical events within a timeless present; the ahistorical organization produces, out of a determinate set of events, indeterminate possibilities in terms of which a plural self may be defined. The logical sphere pervades both the historical and timeless spheres. The logic therein described, delivered via episodes of dialogue, provides a conceptual schema within which Modal Realism may be used to locate the self across plural selves.

Committee:

Joan Connor (Advisor)

Subjects:

Literature; Logic

Keywords:

apostrophe; anachronism; modal realism; realism; romanticism; magical realism; solipsism; determinism

Burke, Alex NortonAn Integrated Toolbox to Assess the Viability of Solar PV at OHIO University
Master of Science (MS), Ohio University, 2017, Environmental Studies (Voinovich)
Ohio University demands over 120,000 Megawatt Hours of electricity annually and plans to reduce the institutional greenhouse gas emissions to 0 by 2075. The demand for electricity includes a significant environmental footprint under the current electricity procurement contract. Addressing the best option for an energy user therefore requires careful examination of the environmental, social, and financial costs and benefits of each scenario. This research develops optimal scenarios for a solar PV installation in Athens, OH and assesses the sustainability of four solar PV installation scenarios and two status quo scenarios. Finally, Analytical hierarchy process is used to simulate decision making process with multiple criteria. The criteria are categorized as environmental, social, and financial and decisions are simulated with three sets of weighting on each criterion. A solar installation helps verify modeled results within the research which concludes that a solar PV farm with tracking or rooftop would serve as the most sustainable electricity procurement decision for OHIO University.

Committee:

Derek Kauneckis, Ph. D (Advisor); Daniel Karney, Ph. D (Committee Member); Greg Kremer, Ph. D (Committee Member)

Subjects:

Environmental Management; Environmental Studies; Sustainability

Keywords:

Sustainable energy, solar PV, cost benefit analysis, life cycle assessment, sustainability assessment, sustainability, energy, decision making modeling, solar PV modeling, analytical hierarchy process, environmental studies

Hassani, KianooshMultispectral and Hyperspectral Remote Sensing of Quaternary Sediments in Tule and Snake Valleys, Lake Bonneville, Utah
Master of Science (MS), Ohio University, 2017, Geography (Arts and Sciences)
Lake Bonneville was the largest water body that accumulated in the Great Basin during the late Pleistocene. Its latest major lacustral cycle lasted from 30 ka to 12 ka and much evidence of the lake remains are still evident in the landscape today. This thesis investigates the use of Landsat-8 multispectral imagery for mapping the Quaternary deposits in the Tule Valley portion, and Hyperion (EO-1) hyperspectral data for mapping part of the adjacent Snake Valley of Lake Bonneville. Maximum likelihood classification was applied for Landsat 8 data, and the two spectral analysis approaches of linear spectral unmixing and spectral angle mapper (SAM) were applied to the Hyperion dataset. Furthermore, X-ray diffraction (XRD) analysis of a Lake Bonneville marl sediment sample characterized the dominant minerals in that sample. This investigation relied on Sack's (1990) Quaternary geologic map of Tule Valley as the reference for the remote sensing analysis. This study investigates if those sources of information can approach in quality and detail the traditional map that relies on fieldwork and air photo interpretation. Results illustrate that hyperspectral and multispectral data have potential value for Quaternary geological mapping. Maximum likelihood classification yielded overall accuracy of 51% with successful discrimination of Qlf, Qeg, Qes, Qlm, Qac, and bedrock. However, complete separation between several lacustrine and alluvial classes was not achieved. In general, the Hyperion spectral angle mapper (SAM) and spectral unmixing results discriminated relatively well among the three endmembers of calcite, gypsum, and quartz across portions of the Snake Valley study area. The high fraction abundance values on the fractional images reliably represented pixels dominated by calcite, gypsum, or quartz. Some confusion between classifications are attributeded to the local mixing of classes at the pixel scale, overlap in mineralogy, similarities in the nature of surface weathering, and the limited spectral resolution of the Landsat image. Results indicate that these methods have value for mapping extensive areas of Lake Bonneville and other desert lake basins faster and more efficiently than has previously been possible.

Committee:

Dorothy Sack (Advisor); Edna Wangui (Committee Member); Timothy Anderson (Committee Member)

Subjects:

Geographic Information Science; Geological; Physical Geography; Remote Sensing

Keywords:

multispectral remote sensing; hyperspectral remote sensing; Quaternary sediments; geological mapping; Lake Bonneville; Tule Valley; Snake Valley; Paleolake

Speakman, Burton C.Digital Gatekeeping and Interaction on Community Media Websites: Are Outlets Selective in User-Generated Content Publication and Audience Communication?
Doctor of Philosophy (PhD), Ohio University, 2017, Journalism (Communication)
The Web 2.0 era increasingly relies on submissions of content from non-professionals and interaction between the masses. Community newspapers work within a changing media market and one where the audience moves to digital consumption while economics greatly favor print. This study seeks to examine how community newspaper websites choose to engage in gatekeeping as it relates to user-generated content. It also seeks to learn the manner in which those who operate these sites interact with the public. This dissertation uses two content analyses to separately gauge the publication of UGC and interaction on community newspaper websites. Furthermore, the researcher seeks through survey to learn the attitudes of those who operate community newspaper websites toward both the publication of UGC and where they believed it was important to interact with the public. The study suggests there may be no easy answers in terms of technology for getting the public to contribute UGC. Simply making multiple requests for contributions, providing numerous manners for the public to submit, or even offering a special location on the web for all submitted content does not seem enough to convince the public to contribute more content. However, this dissertation indicated direct interaction does appear to increase the number of comments a site receives and the attitudes of managers UGC and interactivity also may influence public actions in terms of participation.

Committee:

Hans Meyer, Dr. (Advisor)

Subjects:

Communication; Journalism; Mass Communications; Mass Media

Keywords:

Interactivity; networked gatekeeping; economic gatekeeping; user-generated content; community journalism; community media; gatekeeping

Boarman, McKaila J. S.Trade-offs and Temporal Variation in Predator-Mediated Natural Selection and Sexual Selection on the Wings of the Damselfly Calopteryx splendens
Master of Science (MS), Ohio University, 2017, Biological Sciences (Arts and Sciences)
Evolutionary theory predicts a trade-off between sexual selection and natural selection on secondary sexual traits. Understanding the relationship between mating success and predation risk can give insight into the evolutionary dynamics that interact to promote or constrain phenotypic change, yet it has been little studied in the wild. I conducted a two-year cross-sectional field study on the Banded Demoiselle damselfly (Calopteryx splendens) to test for trade-offs between sexual selection and predation risk, and to assess variation in sexual and natural selection. At the study population, the White Wagtail (Motacilla alba) captures C. splendens in flight, then flies to feeding stations where it removes the wings and consumes the body. I used geometric morphometric techniques to quantify damselfly wing morphology, and compared wing shape and secondary sexual traits of wings from feeding stations to a random sample of wings from the population to quantify the strength, mode, and direction of natural selection on males. Simultaneously, I measured wing traits from individuals caught in the act of mating and compared them to a random sample of wings from the population to quantify the strength, mode, and direction of sexual selection on male wings. By comparing natural selection and sexual selection on wing traits simultaneously, I tested for trade-offs between types of selection. My results suggest that predator-mediated selection fluctuates through time, and is especially variable in how it operates on the size of secondary sexual traits displayed by males. Sexual selection operated almost exclusively on secondary sexual traits, and was consistent across years. Predator-mediated selection acted differently on fore- and hindwings, favoring males with long, narrow forewings and short, broad hindwings. A trade-off between natural and sexual selection was revealed on wing patch characteristics, with males possessing larger and darker wing patches experiencing higher predation rates, while achieving the highest mating success.

Committee:

Shawn Kuchta, PhD (Advisor); Willem Roosenburg, PhD (Committee Member); Kelly Johnson, PhD (Committee Member)

Subjects:

Animal Sciences; Biology; Ecology; Entomology; Evolution and Development

Keywords:

geometric morphometrics; selection trade-offs; predation; sexual selection; natural selection; Calopteryx splendens; selection gradient; selective agent; secondary sexual trait

Rohit , Akanksha Optimization and Characterization of a Capillary Contact Micro-Plotter for Printed Electronic Devices
Master of Science (MS), Ohio University, 2017, Electrical Engineering & Computer Science (Engineering and Technology)
Printed electronics is emerging as an integral part of the electronic industry due to its low cost fabrication and flexibility of devices against the rigid and expensive technology using silicon. Various methods for printing have existed for a long time with inkjet printing being the most common method used for electronic devices. This thesis explores a new and innovative printed technology using a capillary based microplotting approach implemented via Sonoplot Microplotter II. Unlike the inkjet printing technique which prints in overlapping spots with resolution between 30µm-100µm, the Microplotting approach helps to prints continuous features with a higher resolution as low as 5 ¿¿. Capillary action is used to fill picoliter amount of ink into a micropipette which is used for printing. Thus, the focus of this thesis is the optimization of this new printing technology under various conductions using different conductive inks and on a broad range of substrates and different tip diameters. In addition, passive resistive, capacitive and inductive components were printed to characterize the printing process and operation of electrical devices under different conditions. The applications of this Microplotter was further demonstrated by printing a flexible resistive strain sensor. The procedures involved for the fabrication of micropipettes using a glass puller for different diameter tips attached to the dispenser head is also explained in this thesis.

Committee:

Savas Kaya (Advisor); Chris Bartone (Committee Member); Jeffrey Dill (Committee Member); Eric Stinaff (Committee Member)

Subjects:

Electrical Engineering; Nanotechnology

Keywords:

Printed Electronics; Microplotter; Capacitive; Indictive; Resistive; Micropipettes

Kalkan, BilalProblematic Internet Use, Online Gaming, and Online Gambling, and Their Relationships with Depression and Quality of Life among College Students
Doctor of Philosophy (PhD), Ohio University, 2017, Counselor Education (Education)
Young adults on college campuses are surrounded by information and communications technology and have limitless access to the Internet on college campuses. The purpose of this study was to explore the prevalence and extent of problematic Internet use, online gaming behavior, and online gambling behavior, and their relationships with depression and quality of life among college students. The study utilized a non-experimental cross-sectional research design employing quantitative research methodology. The current study aimed to answer two research questions: (a) Is there a relationship between depression and a linear combination of the Internet Addiction Test (IAT), the Problematic Online Gaming Questionnaire (POGQ), and the Online Gambling Symptom Assessment Scale (OGSAS) among college students? and (b) Is there a relationship between quality of life and a linear combination of the Internet Addiction Test (IAT), the Problematic Online Gaming Questionnaire (POGQ), and the Online Gambling Symptom Assessment Scale (OGSAS) among college students? Results of the first research question indicated that the IAT statistically significantly predicted depression. Results of the second research question also indicated that IAT statistically significantly predicted quality of life. Problematic Internet use was positively correlated with depression and negatively correlated with quality of life. Although online gaming was significantly correlated with depression and quality of life, it did not predict depression and quality of life among college students. Online gambling was also significantly correlated with quality of life, but did not predict quality of life among college students. Supplemental analyses showed the similarities and differences between undergraduate and graduate level, and male and female students on their IAT, POGQ, OGSAS, BDI-II, and WHOQOL-BREF scores. Weekly Internet usage statistics were also presented and showed usage time differences between undergraduate and graduate, and male and female students. The findings of the current study contribute to understanding problematic internet use, online gaming and online gambling in college students but must be considered in the light of limitations of the study. The study helps inform clinical practice and the treatment of problematic internet among college students.

Committee:

Christine Bhat (Advisor)

Subjects:

Counseling Education; Counseling Psychology; Mental Health; School Counseling

Keywords:

problematic internet use; online gaming; online gambling; dysfunctional online behaviors; depression; quaily of life; mental health; counseling

Khalili, FatemehDesign and Simulation of Coded-Modulation Using Turbo Trellis Coding and Multi- Layer Modulations
Doctor of Philosophy (PhD), Ohio University, 2017, Electrical Engineering & Computer Science (Engineering and Technology)
For modern wireless communication systems bandwidth efficiency and energy efficiency are the vital requirements for reasonable performance. Bandwidth determined by the rate at which information can be sent via the channel and the maximum rate at which error free information can be communicated is introduced as channel capacity by Shannon. Bandwidth efficiency or spectral efficiency is often satisfied by exploiting appropriate modulation scheme. Energy efficiency or power efficiency depends on the amount of power that a system uses which is a critical issue for wireless and cellular communications. It also shows the system tolerance against the environment noise. Energy efficiency can be improved by applying error correcting codes that produces lower error probability at the receiver for a fixed signal to noise ratio. In order to achieve both requirements, the idea of coded modulation technique which combines QPSK and OFDM modulation with a low rate, short block systematic turbo code, is proposed. We aim to achieve exceptional energy efficiency in extremely noisy environments, where moderate data rates and short messages are required. For this proposed model, the performance improvement is produced by a unique mapping of trellis structure error correcting code and spectral efficiency is achieved by exploiting OFDM modulation. The designed OFDM distributes systematic and parity symbols along all sub-channels symmetrically and adjusts their power distinctively to achieve superior bit error performance. Further, we utilize four-dimensional M-ary Quadrature Amplitude Modulation (4D-MQAM) for parity symbols which effectively increases the overall rate of the system while maintaining the same level of energy efficiency. Moreover, we apply puncturing for parity symbols to increase overall rate of the system and improve bandwidth efficiency. Also, we applied non-systematic coding structure to increase coding rate with less puncturing rate while maintaining the error rate as low as possible. The resulting performance of our designed system compared with the theoretical sphere packing lower bound indicates a very small gap (less than 0.5 dB) which means a substantially close approach to the Shannon limit.

Committee:

Jeffrey Dill, Dr (Advisor)

Subjects:

Electrical Engineering

Keywords:

Coded Modulation; Turbo Trellis Coding; Multi-Layer Modulation; Sphere Packing Bound

Hamad, Gulakhshan M.Using the R-Function to Study the High-Resolution Spectrometer (HRS) Acceptance for the 12 GeV Era Experiment E12-06-114 at JLAB
Master of Science (MS), Ohio University, 2017, Physics and Astronomy (Arts and Sciences)
Experiment E12-06-114 was conducted in Hall A of the Jefferson National Laboratory (JLab) from September 2014 to December 2016. The experiment used exclusive electron-proton scattering to extract the Generalized Parton Distribution Functions (GPDs). The scattered electron was detected in the Hall A Left High Resolution Spectrometer (L-HRS) and the emitted photon in a PbF 2 calorimeter. In general, the recoil proton was not detected, but its mass was reconstructed using the missing mass (M 2 X ) technique, which uses information from the spectrometer and the calorimeter to compute the squared invariant mass of the recoil proton. The purpose of this thesis is to model the High-Resolution Spectrometer (HRS) acceptance at the 1% level. The HRS acceptance is a 4-D region of space, depending on the four correlated target variables (y tg , ¿ tg , f tg , dp tg ). Due to the 4-D structure the acceptance region is difficult to visualize. The R-function, which defines the distance of a particle from the HRS acceptance bound, provides a convenient way to make a single cut and select electrons in the 4-D space. In addition, the Deep Inelastic Scattering (DIS) cross sections was extracted as a benchmark of the overall analysis. The DIS cross section does not change by more than 1% when increasing the cut on the R-value. As a consequence we assign a systematic error of 1% to the HRS acceptance. We can use this information to evaluate, in a preliminary way, the impact of the systematic errors in the Deep Virtual Compton Scattering (DVCS) experiment.

Committee:

Julie Roche, PhD (Advisor)

Subjects:

Nuclear Physics; Physics

Keywords:

High Resolution Spectrometer; R-Function; Jefferson Lab; Deep Inelastic scattering

Seiler, Jena M.Sensing Security through Contemporary Art and Ethnographic Encounters
Doctor of Philosophy (PhD), Ohio University, 2017, Interdisciplinary Arts (Fine Arts)
This dissertation examines the sensory entanglements of security through an analysis of contemporary art and ethnographic encounters. I argue that the “securitization” of society does not only entail a multiplicity of actors and practices, as Marc Schuilenburg demonstrates, but sensory attunements that bring technologies, bodies, and spaces into security assemblages. The project is in line with recent scholarship on the senses in the social sciences and the humanities, what anthropologist David Howes identifies as the “sensory turn.” In particular, the project resonates with the work of Tim Ingold and Davide Panagia as they argue that the senses are phenomenological, social, and political. I extend this understanding of the senses to the topic of security. To analyze the sensory dimensions of security, I consider a diverse set of materials, including artworks, ethnographic research, news sources, industry trade journals, and official government materials. From this collection of material, I draw out sensory moments and lines of sensation, examining the ways that seeing, hearing, touching, and smelling are at work in security. In this project, “sensing security” holds three meanings: first, I use it to refer to the sensory technologies that increasingly have become a part of contemporary security and how security acts as a sensing mechanism. Second, it refers to the way security conditions the senses, instructing us on how to see, hear, and touch. Security discourse not only outline threats but also teaches us to turn our bodies into security machines in order to identify suspicion and alert authorities: enlisting our eyes, for example, in the counterterrorism campaign “If You See Something, Say Something™.” Finally, by using this phrase I attempt to capture the work I do in the dissertation, as the project explicates, or senses out, the entangled sensory relations of security.

Committee:

Marina Peterson (Advisor)

Subjects:

Art Criticism; Cultural Anthropology; Fine Arts; Geography; Museum Studies; Performing Arts

Keywords:

Security; Senses; Contemporary Art; Ethnography; Technology; Embodiment; Space; Museums

Jackson, Kendra L.A Qualitative Study Understanding the Perceptions of Black Pentecostal Pastors towards Mental Health and Collaborating with Mental Health Counselors
Doctor of Philosophy (PhD), Ohio University, 2017, Counselor Education (Education)
Counseling and mental health treatment has been in existence for decades. This progressing profession continues to meet the needs of our diverse society. Despite the professions progression, the African American population remains undeserved; therefore, the Black Church and religious leaders have become a resource addressing spiritual, religious, emotional and psychological needs. Although, pastors are often the primary and only source of support for addressing mental health and spiritual needs, pastors are confronted with issues beyond their scope of practice, specifically knowledge surrounding severe pathology and DSM diagnoses (Farrell & Goebert, 2008; Weaver, 1995). Regardless of limited knowledge and skills in mental health, options for a referral by Black pastors for external mental health services are slim and in some cases, nonexistent. As a solution, pastors have implemented their own methods, such as casting out demons and divine healing to address mental health issues in the Pentecostal Church (Belcher & Hall, 2001). Mental health counselors are beginning to view the Black Pentecostal Church as a gateway to reach an undeserved population through the means of fostering collaboration. However, literature suggests reluctance in Black Pentecostal pastors collaborating with mental health counselors (Mollica et al., 1986). The perception of Black Pentecostal Pastors is influential in how they address mental health, and can contribute to their reluctance in referring their parishioners for external mental health services, especially if the presented issue of the parishioner is perceived as a spiritual matter (Petty & Krosnick, 2014). To understand the perceptions of Black Pentecostal Pastors towards mental health and collaborating with mental health counselors, this research investigation used in-depth semi-structured interviews with six Black male Pentecostal Pastors as the main data collection method to address the following questions: 1) What are the perceptions of Black Pentecostal Pastors towards mental health treatment? 2) How do Black Pentecostal Pastors address mental health issues with their church congregants, and 3) What are the perceptions of Black Pentecostal Pastors towards collaborating with mental health counselors? Critical Race Theory, Systems Theory, and Yalom’s Therapeutic Factors serve as the theoretical and conceptual framework for this study; in addition, a phenomenological case study was used as the methodological approach for this study. A phenomenological approach was implemented to analyze the collected data.

Committee:

Mona Robinson, PhD (Committee Chair); Adah Ward-Randolph, PhD (Committee Member); Nikol Bowen, PhD (Committee Member); Adrienne Erby, PhD (Committee Member)

Subjects:

African Americans; Counseling Education; Mental Health; Pastoral Counseling

Keywords:

Black Pentecostal Pastors; Mental Health; Collaborating with Mental Health Counselors

Hamaguchi, FujihitoThe effect of static ear canal air pressure on the time-frequency analysis of transient evoked OTO-acoustic emissions
Master of Science (MS), Ohio University, 1997, Electrical Engineering (Engineering)
The effect of static ear canal air pressure on the time-frequency analysis of transient evoked OTO-acoustic emissions

Committee:

Jeffrey Giesey (Advisor)

Keywords:

Oto-Acoustic Emissions; IL088; Wigner Distribution

Zalack, Jason T.Development of a diatom based index of biotic integrity for acid mine drainage impacted streams
Master of Science (MS), Ohio University, 2006, Plant Biology (Arts and Sciences)

In Ohio, fish and macroinvertebrates are the organisms of choice for assessment of biological condition in wadable streams. Macroinvertebrates are used to calculate the invertebrate community index (ICI) in order to assign a site score of 0-60, and classification of Excellent, Good, Fair, or Poor. This study aimed to show the utility of the diatom community in classifying streams as well as the ICI, evaluate sensitivity of potential diatom metrics and the diatom index of biotic integrity (DIBI) to acid mine drainage pollution (AMD), and assemble promising metrics into an index that could be used to characterize health of AMD stressed streams. To accomplish this task, macroinvertebrates, diatoms and water samples were collected from 41 stream segments in southeastern Ohio. Water samples were analyzed for nutrients (P04, N03,), alkalinity, pH, conductivity, and AMD indiators (Fe, Mn, and SO4). The ICI metrics showed significant (p < 0.05) correlations with many stream chemistry variables. Four DIBI metrics showed significant correlations with more than two chemical variables. Several ICI metrics showed correlations with DIBI metrics and DIBI scores were significantly correlated with ICI scores. Classification and regression tree (CART) analysis produced a tree using five DIBI metrics to characterize streams based on their ICI narrative grouping (Excellent, Good, Fair, and Poor). A modified DIBI (AMD-DIBI) was created using 3 original metrics plus six additional metrics that were determined to be more sensitive to AMD stress. The AMD-DIBI proved to have a much-improved relationship with the ICI (r = 0.72, p < 0.0001). This AMD-DIBI may be a useful tool for assessing biotic integrity when obtaining an ICI score is not feasible.

Committee:

Morgan Vis (Advisor)

Subjects:

Biology, Limnology

Keywords:

diatoms; streams; acid mine drainage; amd; multimetrics; Index of Biotic Integrity; macroinvertebrates; ICI; DIBI; steam health; algae; indicators; Southeast Ohio

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