Legends Between the Lakes

My work explores the ways in which the viewer might use technology to interact with the exhibit around them. The exhibition space consists of 5 travel posters united by a common theme and intended to pique the viewer\u27s interest. Through the use of an accompanying mobile website, the audience may further interact and delve deeper into the meaning behind the posters. By utilizing technology in this supplementary manner I intend to add greater depth to the objects that exist in the physical world. The subject matter of the exhibition is the forgotten remains and stories of the people who once inhabited the Land Between the Lakes. These stylistic depictions of abandoned structures and dilapidated buildings are intended to cultivate viewer intrigue. As the viewer is drawn in, the mobile interface will provide background information and supplementary interactions and photos. There is a distinct irony between the depiction of a world forgotten and the immortalization of that world through art and technology. In a more abstract manner, the focus of my work is the simplification of the way a viewer digests information. I want to create a flow of information that is strictly organized by a hierarchy of relevance, making it easy to comprehend even if the finer details are not seen immediately. Stylistic inspiration for my work is drawn largely from Herb Lubalin, Dan MacAdam and Kevin Mercier. Lubalin is a significant source of my typographic inspiration and hierarchical reference. MacAdam’s prints have been a great resource as I worked out how to display the architectural elements in the compositional space. The UX work Mercier produces, helped me to construct a UI that is easily navigable; furthermore he inspired the subtle use of transitions as the user courses through the supplementary material. I have taken inspiration from these artists and their work to try to incorporate my work in the physical and digital realm.https://digitalcommons.murraystate.edu/art498/1062/thumbnail.jp

Margin Shore

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Transitioning to a New Principal From the Teachers\u27 Perspective: An Interpretive Case Study

The transition to a new principal in any school setting is an important time for both students and teachers because principals play a large part in shaping school culture. No research to date was found that focused on the teacher experience when a new principal is hired. This interpretive case study sought to understand the teacher experience during a principal transition and the teachers’ perceptions of the role that the principal played in the transition. The study site was Lincoln Elementary, a public elementary school located in Minnesota of the United States. Interviews were conducted from November 2014 to January 2015, with 12 participants, including specialists, English learner teachers, classroom teachers, a former dean of students, and a principal who formerly taught at Lincoln. Teachers revealed their experience during a recent principal transition, which was reported to be positive. Four major themes emerged regarding what teachers experienced: an improved school work environment, a graphic vision for the school’s future, more systems to support students and learning, and more building-based professional development. While this study may not be applicable to other principal transitions, it added to the body of knowledge by filling a gap regarding the teacher experience during one principal transition. It highlighted the need for principals to examine the impact of their actions on teachers, likewise for managers regarding their employees. This study provided a rare view into what teachers experienced

Transitioning to a New Principal From the Teachers\u27 Perspective: An Interpretive Case Study

The transition to a new principal in any school setting is an important time for both students and teachers because principals play a large part in shaping school culture. No research to date was found that focused on the teacher experience when a new principal is hired. This interpretive case study sought to understand the teacher experience during a principal transition and the teachers’ perceptions of the role that the principal played in the transition. The study site was Lincoln Elementary, a public elementary school located in Minnesota of the United States. Interviews were conducted from November 2014 to January 2015, with 12 participants, including specialists, English learner teachers, classroom teachers, a former dean of students, and a principal who formerly taught at Lincoln. Teachers revealed their experience during a recent principal transition, which was reported to be positive. Four major themes emerged regarding what teachers experienced: an improved school work environment, a graphic vision for the school’s future, more systems to support students and learning, and more building-based professional development. While this study may not be applicable to other principal transitions, it added to the body of knowledge by filling a gap regarding the teacher experience during one principal transition. It highlighted the need for principals to examine the impact of their actions on teachers, likewise for managers regarding their employees. This study provided a rare view into what teachers experienced

Improving Image Classification of Knee Radiographs: An Automated Image Labeling Approach

Large numbers of radiographic images are available in knee radiology practices which could be used for training of deep learning models for diagnosis of knee abnormalities. However, those images do not typically contain readily available labels due to limitations of human annotations. The purpose of our study was to develop an automated labeling approach that improves the image classification model to distinguish normal knee images from those with abnormalities or prior arthroplasty. The automated labeler was trained on a small set of labeled data to automatically label a much larger set of unlabeled data, further improving the image classification performance for knee radiographic diagnosis. We developed our approach using 7,382 patients and validated it on a separate set of 637 patients. The final image classification model, trained using both manually labeled and pseudo-labeled data, had the higher weighted average AUC (WAUC: 0.903) value and higher AUC-ROC values among all classes (normal AUC-ROC: 0.894; abnormal AUC-ROC: 0.896, arthroplasty AUC-ROC: 0.990) compared to the baseline model (WAUC=0.857; normal AUC-ROC: 0.842; abnormal AUC-ROC: 0.848, arthroplasty AUC-ROC: 0.987), trained using only manually labeled data. DeLong tests show that the improvement is significant on normal (p-value<0.002) and abnormal (p-value<0.001) images. Our findings demonstrated that the proposed automated labeling approach significantly improves the performance of image classification for radiographic knee diagnosis, allowing for facilitating patient care and curation of large knee datasets.Comment: This is the preprint versio

The Effects of HIV on Pregnant Women and the Role of the Placenta in Transmission to the Fetus: A Systematic Literature Review and Meta-Analysis

Sexually transmitted infections (STIs) have major clinical significance around the world and are a topic that is actively researched. Specifically, human immunodeficiency virus (HIV) is a well known STI that has been studied extensively. This study will focus on the effects of HIV in pregnant women, transmission to the fetus, and the role of the placenta as a means of protection. The objective of this study is to analyze and review current literature on the effects of HIV in pregnancy to form a systematic publications review on the topic. With this study, it is hypothesized that administering antiviral drugs during pregnancy can reduce negative impacts and lower the risk of transmission to the fetus through the placenta since the placenta is found to play a protective role for the fetus. To efficiently form this review, a series of reliable scientific reviews will be accumulated using keywords, followed by filtering these articles to find those relevant to the study’s focus, analyzing the articles, and finally synthesizing the findings to create a systematic review. The goal of this study is to gain a better understanding of HIV’s effects in pregnancy and how these can be treated and prevented. This literature review attempts to bring more awareness to the clinical significance of HIV in pregnancy by focusing on specific transmission routes to better understand how to treat and prevent complications without being unethical or causing further negative effects, specifically on the fetus

Two Topics in Elementary Particle Physics: (1) Quark Graphs and Angular Distributions in the Decays of the Axial-Vector Mesons. (2) Universal Current-Current Theories and the Non-Leptonic Hyperon Decays

The Thesis is divided into the following two parts: (1) We examine three aspects of the axial-vector mesons: (i) angular distributions of the I = 1 states, (ii) mixing of the I = 1/2 states, and (iii) absence of the I = 0 states. Using a model of mesons decaying via production of a quark-antiquark pair with the quantum numbers of the vacuum, we relate the angular distributions in the decays A1→ ρπ and B → ωπ, predicting 2(g1/g0)A1 = (g0/g1)B + 1. This relation is consistent with the present, somewhat ambiguous experimental data. Also, we describe satisfactorily, in terms of two parameters, the partial widths of the 0+, 1+, and 2+ mesons decaying into 1-0- and 0-0- pairs. The prediction of the model is that SU(6)W x 0(2)LZ relations hold among all the D waves and among all the S waves, but not between the two groups. In fact, our two-parameter fit to the data entails a ratio of S wave to D wave amplitudes of approximately the same magnitude but opposite sign to that implied by SU(6)W x 0(2)LZ. Unlike the widths, the angular distributions are sensitive to the relative sign and are thus crucial in determining that the fit of our model differs considerably from the SU(6)W solution. Parameters of the fit are applied to the l+ kaons, which may mix with one another. The results are sensitive to the mixing angle ø, and merely assuming lower bounds on widths of both physical states establishes the limits 10° ≤ ø ≤ 35° As a result of this mixing, one predicts: (a) the suppression of the K*π mode of the lower peak, (b) the suppression of the ρK mode of the upper peak, and (c) decay distributions in the K*π mode similar to that of the A1 for the lower state and to that of the B for the higher. The properties of the missing isoscalar mesons are described with particular emphasis on the ninth 1++ state. Expected properties of this meson, the D', include: (a) assignment to a weakly mixed SU(3) singlet, predicted by duality and confirmed by the Gell-Mann-Okubo mass formula; (b) a mass of ~950 MeV, predicted by super-convergence with assumptions about the relative couplings of D and D’; (c) decay modes ηππ and π+π-γ; and (d) the possibility of a suppressed ρ signal in the π+π- spectrum of the π+π-γ final state, despite the expectation that the pions are in a state with I = J = 1. These features suggest that a recently reported meson near this mass with decay modes ηππ and π+π-γ may be a candidate for this state, although Jpc = 1+- is also a definite possibility for the new meson. (2) Because of the limited evidence for the V-A Cabibbo theory in the non-leptonic weak decays, we examine the compatibility with experiment of more general current-current theories. These theories, constrained by universality, are constructed from the neutral and charged currents obtainable in the quark model, i.e., scalar, pseudoscalar, vector, axial-vector, and tensore Using current algebra and PCAC, a certain class of these theories, including Cabibbo's, is found to be consistent with the S wave amplitudes for the non-leptonic hyperon decays. The P wave amplitudes remain unexplained. Nevertheless, another class of theories, also including V-A, plus the assumption of a symmetric quark model, predict the ΔI = 1/2 rule.</p

Axial-vector meson mixing in orthocharmonium decays

The new BES measurement on the two-body decays of J/psi and psi' into an axial-vector meson and a pseudoscalar meson is analyzed with the axial-K mixing including the one-photon annihilation contribution. A somewhat puzzling pattern of the K_1^+ K^- decay channels can be understood with no tight constraint on the mixing angle. The branching fractions of the K_1^0 K-bar^0 channels will be the cleanest source of information to determine the mixing angle from the 1^+ 0^- decays of J/psi and psi'.Comment: 14 pages with 4 eps figure