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Modeling And Control Of A Novel Ball Screw Mechanism, Wen-Hsiang Hsieh, Kai-Bi Chang

Journal of Marine Science and Technology–Taiwan

This study proposes a systematic approach for the design and control of a novel ball screw transmission system. We investigated the structure of the system, performed kinematic analysis, and conducted dimensional synthesis by optimization. The mathematical model of the system was determined by system identification and a refined PID controller was designed. Computer simulation was conducted to verify the feasibility of the proposed design. A prototype machine and an experimental setup were built and tested. The experimental results show that the output with the controller agrees well with the required output. Therefore, the proposed design can produce the expected output …

Analysis Of Heart Rate Variability Amongst Cyclists Under Perceived Variations Of Risk Exposure, Ronan Doorley, Vikram Pakrashi, Eoin Byrne, Samuel Comerford, Bidisha Ghosh, John A. Groeger

NIMBUS Articles

Cycling as a mode of travel provides an opportunity for many people to increase their levels of regular physical activity and contribute to their mental and physical health. Heart rate is often used as a means of measuring the intensity and energy expenditure of physical activity. However, heart rate is also linked to emotional factors such as anxiety and fear. Perceptions of risk due to external factors such as other road users and infrastructure may arouse such emotions in urban cyclists. The present study set out to investigate whether or not perceptions of risk among urban cyclists may lead to …

Status And Trends Of The Rocky Intertidal Community On The Farallon Islands, Jan Roletto, Scott Kimura, Natalie Cosentino-Manning, Ryan Berger, Russell Bradley

Monographs of the Western North American Naturalist

The Farallon Islands in the Gulf of the Farallones National Marine Sanctuary (GFNMS) is a 7-island chain located 48 km west of San Francisco, California. Since 1993, GFNMS biologists and associates have monitored algal and invertebrate species abundances on the intertidal shores of the 2 South Farallon Islands. The monitoring occurred 1–3 times yearly in 6 study areas. In each study area, 3–4 permanent, 0.15-m² quadrats located between the upper and midintertidal zones were sampled for algal and sessile invertebrate cover and invertebrate counts. Taxonomic surveys were also completed to document other species in the vicinity of the sampling …

How The Esa Can Swallow Alaskan Tribal Sovereignty: The Story Of The Iliamna Lake Seals, Charisse Arce

American Indian Law Journal

No abstract provided.

Toward A Theory Of Safe Passage: Agentic Practices Of Women Writers Who Teach, Lillian Gordon Reeves

Theses and Dissertations

Past studies show that narrative is an effective tool for guiding teachers to develop teacher identity, to recognize their practical knowledge, and to engage in teacher transformation, especially during initial teacher training and the early years of their career. Consequently, other researchers have identified how narrative studies inform what we know about teachers’ identities, their practical knowledge, and their transformations during initial training and early career teaching. However, we do not know how narrative functions in the experiences of teachers beyond initial teacher training and early career teaching. This study intends to fill this gap in the research. In this …

The Poetic Works Of Charlotte Smith: Philosophy, Sympathy, And Forging Community, Jessica Danielle Castillo

Theses and Dissertations

This work will focus on Charlotte Smith’s poetic works and how, over the course of her entire poetic career (the late eighteenth century/early nineteenth century), she exhibits a concrete sense of a poetic ethos regarding sympathy in her writing. I seek to account for the overwhelming focus on suffering subjects by illuminating her view of the relation between poetry and sympathy for others. I will also place her within a history of writers and philosophers who examined the epistemological and practical nature of feeling, sympathy, and emotional connection among human beings. Smith feels that poetry renders suffering visible to others, …

The Influence Of Confucianism On Identity Formation Of A Multi-Skilled Migrant: An Autoethnography, Annabella Fung

The Qualitative Report

In this autoethnographical study, I examine how my identities were influenced by Confucianism. Two main Confucian concepts were examined: “selfperfection,” and “filial piety and submissiveness.” As a migrant who left Macau for Australia at fifteen, I have been immersed in diverse cultural climates, experienced gender bias, identity crisis and racial discrimination. I consider all experiences as essential steps of my evolution with ethnographic, interpretative, phenomenological and narrative understandings. This paper introduces the term “seasonal fluctuations” as a way to describe the changing meanings of my lived experiences that were interrogated by my three distinctive personalities: The Writer, The Interpreter and …

What's Wrong With Me?: An Autoethnographic Investigation Of The Co-Cultural Communicative Practices Of Living With Tourette Syndrome During Adolescence, Mark Congdon Jr.

The Qualitative Report

Using an Autoethnographic methodology, this essay explores how I was diagnosed with Tourette Syndrome. My experience illustrates a dynamic and difficult process of understanding and negotiating assimilation, using a variety of communication strategies related to self-perception, perceptions of others, and interactions with others. Using Co-Cultural theory (CCT) as a theoretical framework, three themes emerged from my experience: (1) nonassertive assimilation: negotiating with relationships of authority, (2) aggressive assimilation: negotiating relationships with peers, and (3) nonassertive separation: the convergence of negotiating relationships of authority and with peers. It is my hope that my story expands the awareness and conversation among and …

Building Sanity: The Rise And Fall Of Architectural Treatment At The South Carolina Lunatic Asylum, Kimberly Jean Campbell

Theses and Dissertations

Although many historians have acknowledged the importance of architecture in the treatment of the mentally ill during the nineteenth century, no historian has ever examined the rise and fall of the importance of architecture to the treatment of patients at the South Carolina Lunatic Asylum. By the late eighteenth century, physicians and laymen alike accepted the ideology of environmental determinism – that one’s environment exercised a direct influence over his or her behavior. In other words, mental illness was both caused and cured by the environment; thus, architecture played a key role in the treatment of mental illness. The South …

Science Fairs Before Sputnik: Adolescent Scientific Culture In Contemporary America, Sarah Michel Scripps

Theses and Dissertations

"Science Fairs before Sputnik: Adolescent Scientific Culture in Contemporary America" traces the formation and evolution of science fairs in America, focusing on the ways in which adolescents established communities of practice by engaging in these competitions. Over the course of the twentieth century, generations of American children conducted their first experiments by crafting science fair projects. The dissertation evaluates this understudied phenomenon against the backdrop of American fascinations and fears of science and evolving notions of adolescence. It argues that science fairs were central to shaping an adolescent scientific culture in the United States during the early to mid twentieth …

Gender Influenced Social Welfare Reforms At The South Carolina Confederate Soldiers’ Home And Infirmary: An Institutional History (1908 - 1957), Brian Dolphin

Theses and Dissertations

The South Carolina Confederate Soldiers’ Home and Infirmary in Columbia opened in 1909, serving two aged and infirm veterans per county. The last former Confederate state to establish a residential facility for veterans, South Carolina became the first state to reserve positions for women on the managing board. Women on the Board exercised more power there than at any comparable institution in the South, with policy implications that featured an increasingly inclusive policy for accommodation of women as both Confederate Soldiers’ Home and Infirmary administrators and occupants. When the institution closed in 1957, it had cared for women for a …

Aerosol Techniques For Deposition And Characterization Of Biological And Biomimetic Sensitizers For Solar Devices, Vivek B. Shah

McKelvey School of Engineering Graduate Student Theses & Dissertations

Nano-structured columnar films synthesized by the aerosol chemical vapor deposition (ACVD) system are unique, and have proved to be useful for fabricating solar cells and in other applications. The film formation by ACVD process involves three main phenomenon - aerosol formation and growth, deposition, and restructuring. In this work, thin film formation by the ACVD process is simulated by combining three models - (A) particle formation in gas phase by atrimodal model, (B) particle deposition onto heated substrate by a Brownian dynamics model and (C) sintering on the heated substrate by a multi-particle geometric sintering model (MPGSM). Modelling and simulation …

Childhood Poverty And Psychological Health Of Youths In Hong Kong: Mentoring As A Social Capital Intervention, Hor Yan Lai

Arts & Sciences Graduate Student Theses and Dissertations

Considering that one out of five youths live in poverty in Hong Kong, and poverty is found to have a negative impact on youths' psychological well-being, this dissertation proposes mentoring as a social capital intervention to improve the psychological health of these young people, both who are locally born and who immigrated from Mainland China. In this dissertation, mentoring is defined as a social capital intervention that changes the social resources available to youths living in poverty, and such changes enhance young people's positive psychological outcomes. Based on the social capital theory, poverty-related and psychological theories, three aims were formulated. …

A Reinforcement-Learning Framework For Interpreting Trial-By-Trial Motor Adaptation To Novel Haptic Environments, Ranjan Patrick Khan

McKelvey School of Engineering Graduate Student Theses & Dissertations

Motor adaptation is often considered to occur under the influence of sensory signals, which is usually readily available for humans performing most motor tasks. However, humans can also use reward or other qualitative feedback to reinforce previous actions and perform adaptation. In these experiments, we introduce reward feedback to a traditional motor adaptation experiment: reach adaptation to a velocity-dependent force field. Drawing from the literature of computer science and machine learning, we use a reinforcement-learning framework to interpret the pattern of force generation and reward-prediction errors and observe the effects of concurrent and isolated reward and sensory feedback.

It is …

Approximation And Relaxation Approaches For Parallel And Distributed Machine Learning, Stephen Tyree

McKelvey School of Engineering Graduate Student Theses & Dissertations

Large scale machine learning requires tradeoffs. Commonly this tradeoff has led practitioners to choose simpler, less powerful models, e.g. linear models, in order to process more training examples in a limited time. In this work, we introduce parallelism to the training of non-linear models by leveraging a different tradeoff--approximation. We demonstrate various techniques by which non-linear models can be made amenable to larger data sets and significantly more training parallelism by strategically introducing approximation in certain optimization steps.

For gradient boosted regression tree ensembles, we replace precise selection of tree splits with a coarse-grained, approximate split selection, yielding both faster …

Workplace Harassment: A Cross-Jurisdictional Comparative Analysis Of Legislative Responses To This Workplace Phenomenon In Canada, Kayla Alice Carr

LLM Theses

This thesis investigates different statutory models Canadian legislatures have enacted to address workplace harassment. It adopts a qualitative, comparative case study approach, providing an in-depth comparative analysis of legislation from Québec, Saskatchewan, Ontario, Manitoba and British Columbia. Through this analysis, this thesis outlines the ways in which workplace harassment has been regulated in Canada, why that model was adopted by the jurisdiction and how that model measures against other models for legislating workplace harassment. Through an examination of existing literature relating to workplace harassment stemming from three theoretical paradigms and an analysis of a model legislative framework, this thesis creates …

Marx Is Not A Marxist: The Ghost Of “To Come” And The Technological Transformation Of Labor And The Life Of Capital, Michael Roland Hernandez

Mabini Review

No abstract provided.

Newsroom, Georgia Southern University

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Integrating The Arts And Sciences In The Museum Setting, Emily Clare Riggins

Seton Hall University Dissertations and Theses (ETDs)

The division between the arts and sciences appears to be deepening in America. As political leaders emphasize STEM (science, technology, engineering and math) education in schools, arts education is diminished to make room for STEM courses. Concerned about this phenomenon, many art educators are working to integrate the arts into STEM education through a variety of arts integration efforts. Arts integration not only helps to preserve a place for the arts in the curriculum, it also has been shown to enhance STEM learning.

Arts integration is of special interest to art museum educators who feel that they can provide resources …

The Effects Of Gamifying Optional Lessons On Motivation, Aaron Zemach

McKelvey School of Engineering Graduate Student Theses & Dissertations

Adding video-game elements to non-video-game interfaces (“gamification”) has become a common engagement strategy over the past several years in the domain of education. While prior studies have found that adding game elements to mandatory educational materials can increase students’ motivation to complete the materials, there has yet to be a study to investigate if game elements can make users more likely to engage with optional educational materials. In this study, we investigate whether users of a gamified educational interface are more motivated than users of a non-gamified interface to voluntarily complete educational materials. We found users of a gamified interface …

A Four-Dimensional Image Reconstruction Framework For Pet Under Arbitrary Geometries, Aswin John Mathews

McKelvey School of Engineering Graduate Student Theses & Dissertations

Positron Emission Tomography (PET) is a functional imaging modality with applications ranging from the treatment of cancer, studying neurological diseases and disease models. Virtual-Pinhole PET technology improves the image quality in terms of resolution and contrast recovery. The technology calls for having a detector with smaller crystals placed near a region of interest in a conventional whole-body PET scanner. The improvement is from the higher spatial sampling of the imaging area near the detector. A prototype half-ring PET insert built to study head-and-neck cancer imaging was extended to breast cancer imaging. We have built a prototype half-ring PET insert for …

Contextualized Robot Navigation, David Vincent Lu

McKelvey School of Engineering Graduate Student Theses & Dissertations

In order to improve the interaction between humans and robots, robots need to be able to move about in a way that is appropriate to the complex environments around them. One way to investigate how the robots should move is through the lens of theatre, which provides us with ways to analyze the robot's movements and the motivations for moving in particular ways. In particular, this has proven useful for improving robot navigation. By altering the costmaps used for path planning, robots can navigate around their environment in ways that incorporate additional contexts. Experimental results with user studies have shown …

A Liberal State Of Mind: Formal Reconstructions Of Statehood In The Anglophone African Novel, Maya Ganapathy

Arts & Sciences Graduate Student Theses and Dissertations

While the idea of the nation and national identity is often taken as the starting point for examinations of the African state, this dissertation explores the transnational dimensions of the African novel and the way in which English-language writers from Africa imagine a state that more adequately captures their desire to freely inhabit a global literary marketplace. Although critics of the Anglophone African novel tend to understand the fictional state as an object of unremitting political critique (often simply as a reflection of its real-world counterpart), the African state, when viewed through the methodological lens of narrative form, becomes the …

The Late Ordovician Biogeochemical Carbon Cycle, John Garrecht Metzger

Arts & Sciences Graduate Student Theses and Dissertations

The isotopic composition of the carbonate carbon (δ13Ccarb) is one of the best tools for understanding the biogeochemical carbon cycle through Earth history. δ13Ccarb is also used to chemostratigraphically correlate coeval strata. This dissertation has three main foci that all utilize δ13Ccarb as the common data type. The geologic interval investigated was the Late Ordovician (458-444 Ma) with emphasis on the Guttenberg δ13C excursion, a globally correlated, positive ~3 / event that is ~400 kyr in duration. In the first topic we evaluate post-depositional alteration (i.e., diagenesis) of δ13Ccarb signals. In the second topic, we make reconstructions of sea level …

Gothic Literature And The Politics Of Indistinction, Nicholas Everett Miller

Arts & Sciences Graduate Student Theses and Dissertations

I recover the Gothic as a literature of political possibility. While scholars have long associated the Gothic tradition with political fear, I argue that Gothic novels challenge liberal ideas of the self to produce a sometimes radically egalitarian politics of freedom in the late-eighteenth and early-nineteenth centuries. Edmund Burke made much of the fearfulness of an egalitarian politics in the 1790s, and literary historians have relied on his influence to argue that Gothic fiction is primarily an expression of the fear that comes with the collapse of familial, social, and political distinctions. But fear is not all that accompanies such …

Commentary, Illustration, And Cross-Generic Writing In Paired Editions Of Xixiang Ji And Pipa Ji, Yinghui Wu

Arts & Sciences Graduate Student Theses and Dissertations

This study examines the reproduction and consumption of popular playsXixiang ji(The Story of the Western Wing) andPipa ji(The Lute) as a related pair in seventeenth-century China. During this period, a thriving economy and rapid urbanization stimulated the expansion of commercial publishing. A book market flourished with a bewildering variety of texts and pictures and inventive regroupings of existing materials. Seventeenth-century China has long been recognized as an age of individual creativity, with the elite literati as primary agents, but this study revises the picture by directing attention to the appropriation and transformation of the cultural ideal of "creativity" through the …

Mono-N-Acyl-2,6-Diaminopimelic Acid Derivatives: Analysis By Electromigration And Spectroscopic Methods And Examination Of Enzyme Inhibitory Activity, Jan Hlaváček, Miloslava Vítovcová, Petra Sázelová, Jan Pícha, Václav Vaněk, Miloš Buděšínský, Jiří Jiráček, Danuta M. Gillner, Richard C. Holz, Ivan Mikšík, Václav Kašička

Chemistry Faculty Research and Publications

Thirteen mono-N-acyl derivatives of 2,6-diaminopimelic acid (DAP)—new potential inhibitors of the dapE-encoded N-succinyl-l,l-diaminopimelic acid desuccinylase (DapE; EC 3.5.1.18)—were analyzed and characterized by infrared (IR) and nuclear magnetic resonance (NMR) spectroscopies and two capillary electromigration methods: capillary zone electrophoresis (CZE) and micellar electrokinetic chromatography (MEKC). Structural features of DAP derivatives were characterized by IR and NMR spectroscopies, whereas CZE and MEKC were applied to evaluate their purity and to investigate their electromigration properties. Effective electrophoretic mobilities of these compounds were determined by CZE in acidic and alkaline background electrolytes (BGEs) and by MEKC in acidic and alkaline BGEs …

Integrating Path-Dependent Functionals On Yeh-Wiener Space, Ian Pierce, David Skough

Department of Mathematics: Faculty Publications

Denote by Ca,b(Q) the generalized two-parameter Yeh-Wiener space with associated Gaussian measure. We investigate several scenarios in which integrals of functionals on this space can be reduced to integrals of related functionals over an appropriate single-parameter generalized Wiener space Cˆa,ˆb[0, T ]. This extends some interesting results of R. H. Cameron and D. A. Storvick.

The Foundlings, Nadia Adams

Theses

The Foundlings is an exploration of memory and absence through the use of found objects and photographs. In this thesis, memory is understood through the use of the domestic space and the objects found within. The relationship of photography to memory is an integral part of this work. Specifically in the use of found and constructed imagery as related to the family album. The Foundlings uses sculpture, painting, photography, and projection to understand the place of the individual in both a contemporary and historical context.