<div>The quiet-flow capabilities of the Boeing/AFOSR Mach-6 Quiet Tunnel have been well established in the last decade, but a full characterization of the nozzle flow is an ongoing project. Pitot probes outtted with Kulite pressure transducers were used to further the investigation of the tunnel's flowfield. Noise levels were calculated by integrating the power spectral densities of the measured pitot pressure fluctuations, and experiments were performed to investigate several aspects of the flow.</div><div><br></div><div><div>First, the temperature distribution along the nozzle was varied to determine if heating had an effect on the stability of the laminar nozzle-wall boundary layer. Runs made with initial stagnation pressures slightly above the maximum quiet pressure determined that additional nozzle-wall heating did not have an effect on the amount of runtime which experienced quiet flow. In addition, pitot-probe measurements were taken at various locations to better determine the axial dependence of the noise levels. Experiments were also performed using pitot probes of varying forward-facing diameters to determine the effects of probe geometry on the measured fluctuations. The results were found to differ signicantly from simulations and from a previous set of experimental data, but a likely cause of the discrepancies was not found. A pitot probe mounted on the base of a cone confirmed that the aft end of a model does experience quiet flow. Finally, characterization of the flowfield was attempted when the tunnel is run using helium. The measured pressures for these experiments have a signicant level of uncertainty because the sensor calibration changes as helium diffuses across the diaphragm. Nevertheless, the measurements suggest that there may be periods of uniform flow, although these periods remain unstable and unsteady.</div></div><div><br></div><div><br></div>

abstract: Previous research has shown that training visual attention can improve golf putting performance. A technique called the Quiet Eye focuses on increasing a player’s length of fixation between the ball and the hole. When putting, the final fixation is made on the ball before executing the stroke leaving players to rely on their memory of the hole’s distance and location. The present study aimed to test the effectiveness of Quiet Eye training for final fixation on the hole. Twelve Arizona State University (ASU) students with minimal golf experience putted while wearing eye tracking glasses under the following conditions: from three feet with final fixation on the ball, from six feet with final fixation on the ball, from three feet with final fixation on the hole and from six feet with final fixation on the hole. Participant’s performance was measured before training, following quiet eye training, and under simulated pressure conditions. Putting performance was not significantly affected by final fixation for all conditions. The number of total putts made was significantly greater when putting from three feet for all conditions. Future research should test the effects of this training with expert golfers whose processes are more automatic compared to novices and can afford to look at the hole while putting. / Dissertation/Thesis / Masters Thesis Human Systems Engineering 2019

abstract: Michel Tremblay, one of the most renowned and beloved Quebecois writers, began his literary career in the 1960s. He is well known for writing many of his works exclusively in the Quebec dialect of joual. The history of Quebec, from its beginnings as a permanent settlement of New France, to its subsequent takeover by the British after the signing of the Treaty of Paris in 1763, all were events that set the stage for the Quiet Revolution. The Quiet Revolution was a cultural, social and linguistic uprising set in motion by the French-speakers of Quebec who were tired of being dominated. Up until the 1960s, the majority of literary works produced in Quebec followed the classical French tradition. The desire in the 1960s to break free from the domination of the English language and culture as well as to be differentiated from the French from France brought with it a newfound nationalistic pride. From this point forward there was a push to create a distinct Quebecois literature. One way to differentiate the works of Quebec from those from France was to include characters and settings from within the Quebec society as well as to have those characters speak in their native dialect. Joual, a dialect version of the pronunciation of the French word cheval, meaning horse, was originally a rural dialect that eventually found its way to the inner city. For this reason, joual was most closely identified with the urban working-class of Montreal. This dialect was also perceived as the language of an uneducated, socially and economically inferior segment of the French-speaking Quebec society. By using joual in his literature, Tremblay was able to depict the social, cultural and economic effect that joual had on this element of Quebec's population. This thesis focuses on the impact of joual on this society through the study of two of Tremblay's plays: Les Belles-soeurs (1965), to show a women's perspective about a socially and economically inferior group, and Hosanna (1973), to show the perspective of homosexuals and transvestites, a socially prejudiced group. / Dissertation/Thesis / M.A. French 2012

The quiet eye (QE) - the final fixation or tracking gaze on a specific location that has an onset prior to the start of a final, critical movement (Vickers, 2007) - has emerged as a key predictor of proficient performance in targeting and interceptive tasks over the last 20 years. Since Vickers’ seminal study in golf putting, the QE has been examined in over 28 different motor tasks, with a longer QE duration often referred to as a characteristic of superior performance and a measure of optimal visuo-motor control. However, the underpinnings of QE are not fully understood, with many researchers advocating the need to better identify and understand the mechanisms that underlie the QE (Williams, 2016; Gonzalez et al., 2015). Consequently, the overriding goal of this thesis was to examine the function of the QE duration, what it represents and how it exerts an influence, by exploring the attentional underpinnings of the QE and the prominent cognitive mechanism of response programming. In study 1 (chapter 4), the manipulation of different parameters of golf putting and the examination of different response programming functions (pre-programming vs online control) during the QE enabled me to build on previous explorations of the response programming function by investigating QE’s response to specific iterations of increased task demands. Experienced golfers revealed that longer QE durations were found for more complex iterations of the task and more sensitive analyses of the QE proportions suggest that the early QE (prior to movement initiation) is closely related to force production and impact quality. While the increases in QE were not functional in terms of supporting improved performance, the longer QE durations may have had a positive, insulating effect. In study 2 (chapter 5), a re-examination of Vickers’ seminal work in golf putting was performed, taking into account an error recovery perspective. This 3 explored the influence of trial-to-trial dependence on the functionality of the QE duration and the possible compensatory mechanism that assists in the re-parameterisation of putting mechanics following an unsuccessful trial. The results reveal that experienced golfers had consistently longer QE durations than novices but there was no difference in QE between randomly chosen hits and misses. However, QE durations were significantly longer on hits following a miss, reflecting a potential error recovery mechanism. Importantly, QE durations were significantly lower on misses following a miss, suggesting that motivation moderates the adoption of a compensatory longer QE strategy. These findings indicate that the QE is influenced by the allocation of attentional effort. To explore this notion further, in study 3 (chapter 6), two experiments were undertaken. Experiment 1 examined the QE’s response to attentional effort that is activated via goal motivation and experiment 2 examined the effect of disrupting the allocation of attentional effort on the QE using a dual-task paradigm. The early proportion of the QE was sensitive to motivation, indicating that the QE is not purely determined by the demands of the task and golfers have the ability to apply attentional effort, and therefore QE, strategically (exp. 1). The results also support the assumption that QE reflects overt attentional control but question the sensitivity of QE to detect movements in the locus of attentional effort that does not activate shifts in gaze (covert attention) (exp. 2). The results in this thesis conclude that, while significant contributions to understanding what the QE represents and how it may exert its influence are made, there still remains unanswered questions and tensions that require exploration.

abstract: Gait and balance disorders are the second leading cause of falls in the elderly. Investigating the changes in static and dynamic balance due to aging may provide a better understanding of the effects of aging on postural control system. Static and dynamic balance were evaluated in a total of 21 young (21-35 years) and 22 elderly (50-75 years) healthy subjects while they performed three different tasks: quiet standing, dynamic weight shifts, and over ground walking. During the quiet standing task, the subjects stood with their eyes open and eyes closed. When performing dynamic weight shifts task, subjects shifted their Center of Pressure (CoP) from the center target to outward targets and vice versa while following real-time feedback of their CoP. For over ground walking tasks, subjects performed Timed Up and Go test, tandem walking, and regular walking at their self-selected speed. Various quantitative balance and gait measures were obtained to evaluate the above respective balance and walking tasks. Total excursion, sway area, and mean frequency of CoP during quiet standing were found to be the most reliable and showed significant increase with age and absence of visual input. During dynamic shifts, elderly subjects exhibited higher initiation time, initiation path length, movement time, movement path length, and inaccuracy indicating deterioration in performance. Furthermore, the elderly walked with a shorter stride length, increased stride variability, with a greater turn and turn-to-sit duration. Significant correlations were also observed between measures derived from the different balance and gait tasks. Thus, it can be concluded that aging deteriorates the postural control system affecting static and dynamic balance and some of the alterations in CoP and gait measures may be considered as protective mechanisms to prevent loss of balance. / Dissertation/Thesis / M.S. Bioengineering 2014

Is the teacher ready? That’s the question that haunts every teacher that fateful first day in the classroom. Making it through that day and the 179 school days that follow is how every career in education—and lifelong learning—truly begins. In this collection, fifty teachers share the trials, tribulations, and triumphs they’ve experienced during their first year on the job. Organized along the lines of the school calendar, these touching tales illustrate the learning curve experienced by new teachers: Facing Day One Meeting the Students Surprising the Students Bonding with Faculty and Staff Being Surprised by the Students Watching the Students Bloom Saying Farewell From the hilariously obsessive-compulsive preparation of a rookie English professor to the poignant lesson a bold third grader imparts upon his novice teacher about love and acceptance, this moving collection is sure to motivate new and veteran teachers alike.

The Quebec of the Quiet Revolution invites a fascinating sociocultural study, and this analysis provides an overview of major changes there during the 1960s and 1970s. The author analyzes how artistic, literary, and musical contributions of the era reflected the public's sentiments toward this metamorphosis. References to political cartoons, plays, poetry, songs, and non-fiction works such as essays and manifestos illustrate attitudes toward the shifting role of the Catholic Church, the arrival of a Liberal government following an ultra-conservative administration, the feminist movement, economic and education reform, and the transformation of Quebec's identity through fierce debates over the status of French and English in the province. Policies enacted by Quebec Prime Ministers, especially Maurice Duplessis, Jean Lesage, and René Lévesque were pivotal to the emerging society. Events such as Vatican II, the publication of the Encyclical letter Humanae Vitae, and the efforts of Catholic Action revealed two concurrent strains of Catholicism present in Quebec and the extent to which the Church had become disconnected from society. This study examines major feminist aims within the historical and literary context and considers how collective efforts were critical to advancing their agenda. Ambitious economic measures enabled Quebec's francophone population to catch up to their anglophone counterparts and promoted the long-term prosperity of the entire province. The study features perspectives informed by recent interviews conducted with Quebecois people who witnessed, participated in, and reflected on these dramatic events.

This research analyzes the lives and works of Black visual artists and filmmakers as visual representations of haptic events. This thesis examines how the lives of the artists and specific works of art are entangled with sound and quiet and directly reflect and shape the complexities black interiority. The possibilities of the black interior expand when the senses are combined and how the utilization of that synthesis centers the interior lives, ideas and art of black people. Centering the interior life creates space for the humanity of black people to be fully realized and explored without disruption both individually and collectively. Artists Jean-Michel Basquiat, David Hammons, Nick Cave and filmmakers Arthur Jafa and Kahlil Joseph’s work is used to illustrate how a haptic event is formed, how the haptic event effects both the artist and the audience and how the outcome of the haptic informs the present moment and often surpass the confines of language. This project extends the concept of Hapticality and the futurity of black interior life as a site of reflection, expression and resistance. / African American Studies

The aims of the current program of research were to examine the impact of anxiety on performance and attentional control during the execution of two far aiming tasks, and to examine the efficacy of gaze training interventions in mediating these effects. Attentional control theory (ACT), which suggests that anxious individuals have impaired goal-directed attentional control, was adopted as a theoretical framework, and the Quiet Eye, characterised by long final fixations on relevant locations, was adopted as an objective measure of overt attentional control. In Studies 1 and 2 increased pressure impaired goal directed attentional control (QE) at the expense of stimulus-driven control (more fixations of shorter duration to various targets). The aim of studies 3 and 4 was therefore to examine the efficacy of an intervention designed to train effective visual attentional control (QE training) for novices, and determine whether such training protected against attentional disruptions associated with performing under pressure. In both studies the QE trained group maintained more effective visual attentional control and performed significantly better in a subsequent pressure test compared to the Control group, providing support for the efficacy of attentional training for visuo-motor skills. The aim of study 5 was to examine the effectiveness of a brief QE training intervention for elite golfers and to examine if potential benefits shown for novices in studies 3 and 4 transferred to competitive play. The QE-trained group maintained their optimal QE and performance under pressure conditions, whereas the control group experienced reductions in QE and performance. Importantly, these advantages transferred to the golf course, where QE-trained golfers reduced their putts per round by 1.9 putts, compared to pre-training, whereas the control group showed no change in their putting statistics. This series of studies has therefore implicated the role of attention in the breakdown of performance under pressure, but has also suggested that visual attentional training regimes may be a useful technique for alleviating this problem.

Knowing where and when to look is critical for effective performance of visually guided tasks. A gaze strategy termed the quiet eye (QE; the final gaze before the onset of a critical movement) is strongly associated with motor skill proficiency, with earlier and longer QE periods leading to improved visuomotor control. Children with poor motor proficiency, such as those with Developmental Coordination Disorder (DCD), have impairments in the pick-up and processing of visual information, translating into poorly coordinated movements. The purpose of this project therefore was to perform the first examination of the QE strategy in children of different motor coordination abilities and furthermore to investigate the efficacy of task-specific QE training (QET) to improve the skills of children with and without DCD beyond the effects of a standard coaching technique. Study 1 determined that children with low motor coordination had later, shorter QE durations in comparison to coordinated children and as a result, performed worse in a specified motor task (throwing and catching). Study 2 therefore performed two experiments aimed at developing an appropriate but brief QET protocol for children to improve their throwing and catching ability. These experiments found that typically developing children were able to increase their QE durations with QET and this was reflected in a durable improvement in their motor skill execution. The final study examined this QET intervention in children with DCD. This was the first application of QET in a clinical population, and found that children with DCD were able to improve their QE durations, and make robust changes to their visuomotor control. These studies associate a longer QE with motor skill proficiency in children, and provide an important adjunct to current therapeutic intervention for children with poorly developed motor skills.