SHAREOK Repository
Not a member yet
49261 research outputs found
Sort by
The Hidden Ground: Native American Intercultural Relations
Get PDFThis paper was presented at the 2020 Schools of Thought Conference hosted by the Christopher C. Gibbs College of Architecture at the University of Oklahoma.Over the last two decades, a trend has been developing in the design community to promote social equity and emphasize the ethical responsibility of design. Community participation, programming, and post-occupancy evaluations have cemented a more democratic design process in which users, clients, and community members are given a voice to affect the final architecture product through a process called participatory design. This modus operandi becomes more vital when dealing with subcultures that historically have felt marginalized from the dominant culture. In the United States, there is great diversity among Native Americans, but our mainstream culture tends to see them as a homogeneous group, focusing on their commonalities rather than discovering and understanding individual tribal values. With the blind acceptance of generalizations about any subculture, we may miss the critical details that shape the opportunity to showcase their uniqueness and celebrate their differences. Within the studio context, what learning modalities are best to implement a participatory and constructivist learning experience? Traditionally, studio teaching with project-based design focuses on students learning formal considerations of design such as theory, environmental/structural performance, and implementation of regulatory measures. The participatory design methodology (PDM) differs in its approach by focusing on a process that emerges from all players. It does not dictate design but creates an environment that allows it to emerge through the process and interactions. The PDM process prioritizes collective synergy and creativity using participation techniques to allow for alternative solutions. In response to an inquiry by the Pawnee Native American Tribe, which invited us to investigate a proper approach to conduct design propositions within their land, this paper will report the lessons learned from the process and will exhibit alternate ways of implementing design ideas, using methodologies that expand the boundaries of academia while reaching out to native communities.Ye
Tunable Dual-Band White Light Emission from Gua_3CuCl_4 and Gua_7Cu_3X_10·3DMF (X = Br, I)
Get PDFll-inorganic copper(I) halides have recently emerged as attractive alternatives to lead-based halide perovskites and rare-earth-doped inorganics for light emission applications. Most of the newly discovered all-inorganic Cu(I) halides demonstrate high-efficiency blue emission albeit with unusually poor tunability of photoluminescence (PL) properties. This work reports the facile preparation of three new copper(I) halides based on the guanidinium cation: (CN3H6)3CuCl4, (CN3H6)7Cu3Br10·3(C3H7NO), and (CN3H6)7Cu3I10·3(C3H7NO). A comprehensive characterization of PL is presented for these novel materials, which have highly tunable, dual blue–yellow emission responsive to both excitation wavelength and vacuum annealing. These have remarkable photoluminescence quantum yield (PLQY) values of up to 34.6% and color-rendering indices (CRI) up to 97% for tunable, single-phase white light emission with correlated color temperatures (CCT) ranging from 4851 to 18 921 K, demonstrating the excellent potential of Cu(I) halides for light emission applications.This work was supported by the University of Oklahoma (OU) startup funds and by funds provided by the National Science Foundation (DMR-2045490). Financial support was provided by the University of Oklahoma Libraries’ Open Access Fund. The structure of Gua3CuCl4 was determined by T.D.C., and the structure of Gua7Cu2Br10·3DMF was determined by Dr. Douglas R. Powell. The diffractometer used for SCXRD measurements was purchased through funds from the National Science Foundation (CHE-1726630). The authors would also like to thank Hadiah Fattal for performing TGA/DSC measurements and Nancy Wang for her assistance in material preparationYe
Methods for Control, Calibration, and Performance Optimization of Phased Array Systems
Get PDFPhased array radar systems have proven advantageous in a variety of research applications, offering faster volume scans and unparalleled time-resolution as compared to traditional parabolic dish antenna systems that rely solely on mechanical systems for controlling the direction of radiation. As such, research has accelerated the development of practical phased array systems to realize their full vision. In particular, next generation phased array systems aim to provide additional advantages in the form of re-configurable beam patterns, adaptive digital beamforming, multiple-input multiple-output (MIMO) radar modes, and other software-defined technologies. However, to fully realize a paradigm shift in phased array technology, especially as the ratio of array to sub-array size becomes greater, this requires a corresponding increase in novel digital backend architectures to fully achieve this vision. Therefore, new methods for control, calibration, and performance optimization are required to enable next-generation phased array systems to reach their potential. In this thesis, a variety of practical engineering challenges related to phased array system design are discussed, with system-level implications and relevant theory included where necessary. For instance, for the first time, as explained in this thesis, a GPS disciplined, time-interleaved measurement technique that leveraged real-time control of a beamformer was developed to enable accurate post-processing correction of the phase drift that results from clocking differences between noncoherent physically separated bistatic nodes. In addition, laboratory efficacy of digital predistortion using the memory-polynomial model has been confirmed for the purpose of maximizing an element's usable power while minimizing spectral spreading and achieving desirable output linearity during operation, and a novel method for training predistortion models comprised of a combined software-defined and physical mechanism for measuring transmitter front-end distortion for elements within a digital-at-every element array has been proposed and verified in the lab
Feeling, Feeding, and Feigning Humors: Shakespeare, Jonson, and Early Modern Humoral Theory
Get PDFIn this dissertation, I argue that the humors are a productive way to read early modern drama and that using them as a productive means of analysis allows for much richer cultural knowledge about medicine to come through the chosen plays. As a result, I undertake a deep exploration into how dramatists were using the humoral theory to understand larger and more abstract medical and social movements like the expansion of England’s national identity through the geohumoral theory, the fashionability of medicine, the growth of the economic markets in London, the connection between a singular body and the body politic, and the diversification of carekeeping practices. Specifically, I chose to engage with Shakespeare and Jonson to understand the greater spectrum of the humoral theory on stage and to capture the similarities between the two playwrights’ approaches. I also draw on Jonson and Shakespeare to demonstrate larger patterns of commentary and critique around medicine, the humoral theory, and the cultural manifestations of the humors.
To embody the humoral theory, I crafted the four chapters of this dissertation to represent each of the major humoral dispositions: phlegmatic, sanguine, choleric, and melancholic. Along the way, I attempt to thread the humors together to show the inner workings of Galen’s ideas and to demonstrate their flexibility throughout the period. Further, I take inspiration from the early modern period to employ a host of methodological and theoretical techniques. The dissertation begins with a look at Shakespeare’s Macbeth and the historical tension between the Scottish and English and how Shakespeare draws on the larger geohumoral theory to firmly characterize the Macbeths as phlegmatic Scots who are influenced by their equally phlegmatic environment, a supernatural force of evil, and the invading, moderate English. The second chapter focuses on Jonson’s Bartholomew Fair, the excess of blood, sanguineness, and the shifting economic marketplace in London. The third chapter also focuses on Jonson and the marketplace, but with a keen eye on the fashionability of the choler humor that the young men perform in Every Man in His Humour. Finally, the dissertation revisits the body politic in Shakespeare’s The Winter's Tale and looks at the complexity of melancholy and how it requires a similarly complex, multifaceted healer—Paulina—to address the disposition in its entirety.
Throughout the dissertation, I aim to show that Shakespeare’s demystification of the humors tends to be probative, frequently tentative, and often simultaneously done as he stages humoral realities for the audience, whilst Jonson’s demystification is more robust and direct, which may not immediately suggest that he disregards the humoral theory, but that he aims to continuously critique its cultural displays. Both playwrights demonstrate the heterogenous dramatic interpretation of the theory but with distinct, often shared lines of inquiry, skepticism, and critique
Importance Of Environmental Weather Monitoring for Emergency Management in Oklahoma
Get PDFThis dissertation used a mixed approach of methods (i.e., survey data, NOAA’s Storm Events Database, Google Analytics, focus groups, and interviews) to assess the relevance of environmental weather monitoring and associated training in Oklahoma. The chapters from the dissertation detail what motivates emergency managers and public safety officials to seek training and information sources related to hazardous weather events. The chapters further explore how important (in value and impact) weather training and data are to emergency managers (EMs) and how weather data sources and constraints differ between those in the military and those in local government positions.
Keywords: Emergency management, Decision making, Extreme weather events, Military installations
Non-market valuation, OK-First, Oklahoma, Oklahoma Mesonet, Public Safety Officials, Weather Decision Support Systems, Weather impacts, Weather monitorin
Deep Learning for Weak Target Detection in Range-Doppler Data
Get PDFA consistent issue for detectors in radar systems is how to correctly distinguish target signals from random noise. This is especially true for weak targets with low signal-to-noise ratios (SNRs). Traditional target detection techniques, such as constant false alarm rate (CFAR) detectors, apply detection thresholds that must be set to maximize the probability of detection (PD) while minimizing the probability of false alarm (PFA). These traditional detection techniques also struggle with increasing levels of computational complexity in low-SNR environments. This work investigates the application of deep neural networks towards the radar target detection problem. Two neural network architectures, NoisyLSTM and U-Net, are tested on range-Doppler data to identify regions of interest in which targets may be present. The U-Net model demonstrates promising results, producing detection predictions with a PD of 0.97 and PFA of 0.01 for targets captured by a staring radar at 10dB input SNR. This deep learning architecture may serve as a valuable preprocessing step to reduce the search space of more sophisticated radar detectors
Drones and Killing: Ethics of War and Radical Asymmetry
Get PDFMuch of the ethical debates surrounding the use of force are primarily concerned with permissibility and with compliance with just war tradition principles. However, these moral elements do not fully grapple with the ethical shortcomings of drone warfare, in which there is a removal of physical risk only to the United States. However, this lack of physical risk- the radically asymmetric nature of drone operations, removes the foundation of whether a war may be justifiable: reciprocity. The lack of reciprocity fundamentally challenges our understanding of whether the use of force might be morally justifiable. With the removal of risk to the United States, war becomes a unilateral occurrence, in which individuals from the other side of the conflict are unable to defend themselves; thus, the use of force is less similar to war than it is to murder. In this paper, I seek to address these moral and ethical shortcomings of radically asymmetric warfare by examining the United States use of drone warfare. I first seek to contextualize the moral justification for the use of force by examining current debates on the ethics of drone warfare, specifically addressing both just war tradition and international law. Next, I examine the application of drone warfare by analyzing the morality of signature strike and personality strike operations, and how these are further complicated by risk-asymmetry. Lastly, I argue that risk-asymmetry is not risk-free to soldiers by examining the psychological consequences of waging radically asymmetric war