1,672 research outputs found

    Beyond unwanted sound : noise, affect and aesthetic moralism

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    PhD ThesisThis thesis uses Baruch Spinoza’s notion of affect to critically rethink the correlation between noise, ‘unwantedness’ and ‘badness’. Against subject-oriented definitions, which understand noise to be constituted by a listener; and object-oriented definitions, which define noise as a type of sound; I focus on what it is that noise does. Using the relational philosophy of Michel Serres in combination with Spinoza’s philosophy of affects, I posit noise as a productive, transformative force and a necessary component of material relations. I consider the implications of this affective and relational model for two lineages: what I identify as a ‘conservative’ politics of silence, and a ‘transgressive’ politics of noise. The former is inherent to R. Murray Schafer’s ‘aesthetic moralism’, where noise is construed as ‘bad’ to silence’s ‘good’. Instead, I argue that noise’s ‘badness’ is secondary, relational and contingent. This ethico-affective understanding thus allows for silence that is felt to be destructive and noise that is pleasantly serendipitous. Noise’s positively productive capacity can be readily exemplified by the use of noise within music, whereby noise is used to create new sonic sensations. An ethicoaffective approach also allows for an affirmative (re)conceptualization of noise music, which moves away from rhetoric of failure, taboo and contradiction. In developing a relational, ethico-affective approach to noise, this thesis facilitates a number of key conceptual shifts. Firstly, it serves to de-centre the listening subject. According to this definition, noise does not need to be heard as unwanted in order to exist; indeed, it need not be heard at all. Secondly, this definition no longer constitutes noise according to a series of hierarchical dualisms. Consequently, the structural oppositions of noise/signal, noise/silence and noise/music are disrupted. Finally, noise is understood to be ubiquitous and foundational, rather than secondary and contingent: it is inescapable, unavoidable and necessary

    Alien Registration- Thompson, Suzanne (Portland, Cumberland County)

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    https://digitalmaine.com/alien_docs/31303/thumbnail.jp

    Uncertainty quantification of coal seam gas production prediction using Polynomial Chaos

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    A surrogate model approximates a computationally expensive solver. Polynomial Chaos is a method to construct surrogate models by summing combinations of carefully chosen polynomials. The polynomials are chosen to respect the probability distributions of the uncertain input variables (parameters); this allows for both uncertainty quantification and global sensitivity analysis. In this paper we apply these techniques to a commercial solver for the estimation of peak gas rate and cumulative gas extraction from a coal seam gas well. The polynomial expansion is shown to honour the underlying geophysics with low error when compared to a much more complex and computationally slower commercial solver. We make use of advanced numerical integration techniques to achieve this accuracy using relatively small amounts of training data

    Curbing Migration of Talent in Africa: Initiatives for Collaborative Action

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    In an effort to address migration of talent from sub-Saharan Africa, a number of higher education institutions are attempting to strengthen or develop graduate programs in several areas. These institutions see the potential for emerging digital technologies to provide new and exciting opportunities for collaboration with Western institutions. Examples of these institutions include University of Stellenbosch in South Africa and Iowa State University, which collaborated on a needs assessment for collaborative action to build faculty capacity through the development of shared Internet-based courses. This article describes this initiative. (Contains a list of 3 resources.

    Recruitment of diverse students in speech-language pathology programs

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    Scope and Method of Study:The population in the United States continues to become more racially diverse. The field of speech-language pathology must diversify as well. A diverse professional pool will better serve the needs of the diverse clients speech-language pathologists serve in all educational and clinical settings. This study attempts to identify recruitment practices and strategies that increase the enrollment of students from diverse racial/ethnic backgrounds in speech-language pathology programs. A survey instrument was utilized to determine specific recruitment practices utilized by all accredited graduate programs. A comparison was made between programs with high and low diversity in student enrollment. Chi-square analysis was utilized to identify significant differences in the recruitment practices of both groups.Findings and Conclusions:Four practices or strategies were found to be significant at the .05 level. These key strategies included having diverse faculty, talking to parent groups, disseminating financial aid information and offering specific scholarships or teaching assistantships to students from minority or culturally diverse backgrounds. This comparison of the high and low diversity groups on a large scale is unique and may offer insight into methods to better recruit students from diverse backgrounds to the field of speech-language pathology

    Effect of Instruction on EMG Activity of the Rectus Abdominis during a Crunch on a Swiss Exercise Ball

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    Purpose: The purpose of this study was to assess the benefit of instruction from a physical therapist in participant performance of an abdominal crunch on a Swiss ball, determined through electromyography (EMG) of the rectus abdominis. Subjects: Our subjects included male (n=15) and female (n=15) college students between the ages of 18-50 years old. Exclusion criteria included a history of low back pain, prior spine surgery, pregnancy, previous formal instruction of crunches on a Swiss ball, and an allergic reaction to rubbing alcohol. Instrumentation: EMG biofeedback was used to test rectus abdominis muscle activity. This activity was transmitted by a Noraxon Telemy08 telemetry unit (Noraxan USA, 13430 North Scottsdale Rd., AZ 85254). Data was collected by the Noraxon Telemy08 receiver. The peak Notus5 system (Peak Performance, Englewood, CO) was used to store and analyze the EMG data. Procedure: Participants performed a manual muscle test of the rectus abdominis muscle and the EMG activity was recorded and used for base line data. The subjects were then asked to perform 10 abdominal crunches on the ball without any instruction. This data was recorded, and then verbal instruction on proper technique of an abdominal crunch on the ball was given. Following instruction, participants had one minute to rest, and then perform an additional 10 crunches using the new correct posture. Data Analysis: For statistical analysis, a repeated-measures t-test was used with an alpha level of .05. Results: There was no significant difference when comparing the mean values of EMG muscle activity of the upper rectus abdominis pre and post instruction and lower rectus abdominis pre and post instruction. (78.05 and 76.14 --70.50 and 69.73 respectively) Conclusions and Clinical Implications: In conclusion our study results did not support a significant difference in rectus abdominis muscle activity after instruction measured through EMG analysis. Injury due to over training, muscle imbalances or muscle strains could be avoided when patients are given instructions and demonstrate proper technique

    Biological activity exceeds biogenic structure in influencing sediment nitrogen cycling in experimental oyster reefs

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    Oysters are estuarine ecosystem engineers, in that their physical structure and biological function affect ecosystem processes such as organic matter and nutrient cycling. Oysters deliver material to the sediments through biodeposition and sedimentation caused by modification of flow around the reef. We conducted an experiment to distinguish between biotic effects and physical structure of oyster reefs on sediment nitrogen cycling. Experimental reefs consisting of live oysters, oyster shells alone and mudflats (controls) were sampled for a period of 4 wk for sediment organic matter, C and N content and fluxes of nitrogen (NH4 +, NOX and N2) and oxygen (O2). We hypothesized that the biological activity of the oyster would deposit more, higher quality organic matter compared to deposition from flow modification alone, thus facilitating denitrification and having a larger impact on sediment nitrogen cycling. Compared to the controls, the live oyster experimental reefs increased sediment denitrification by 61% and the shell experimental reefs showed a 24% increase. The live oyster experimental reef also had the largest O2 demand and NH4 + production. Reef structure likely increased organic matter deposition, but the higher quality and larger quantity of organic matter associated with live oysters increased denitrification and microbial respiration. This experiment shows that the ecosystem service of nitrogen removal provided by oysters is primarily driven by the biological function of the oysters and secondarily from the physical structure of the reef. Our increased understanding of how oysters engineer ecosystems and modify nutrient cycling can help guide future oyster restoration effort
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