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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 210 for “"Noise levels"”.
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Noise Levels in a South African bank cash centre
Noise induced hearing loss remains a concern within the employment sector, in spite of the preventability there of. In order to effectively prevent this debilitating disorder the risks need to be fully understood. One such area that requires investigation is the cash centres within the financial, …
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Noise Levels In The Neonatal Intensive Care Unit: A Systematic Review
… of this systematic review is to investigate noise levels in the Neonatal Intensive Care Unit (NICU) in order to see if they are in compliance with the American Academy of Pediatrics (AAP) proposed standards. This investigation also aims to compare noise levels among various NICU conditions in …
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The Effect of Nocturnal Noise Levels in Upper Midwestern Longterm Care Facilities on Sleep Interference in Selected Residents' Well-being
… of this study were:<br /> 1. To determine noise levels in selected upper Midwestern longterm care facilities at night during August and September.<br /> 2. To determine to what extent noise levels interfered with residents' nocturnal sleep.<br /> 3. To determine to what extent sleep …
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Spatial variability of the ambient noise field associated with the Marginal Ice Zone and its relationship to environmental parameters
… Greenland Sea Marginal Ice Zone (MIZ) . Ambient noise "hot spots" or concentrated areas of relatively high noise levels were found along the ice edge using a towed array. Ambient noise levels were obtained on 27 and 28 July using AN/SSQ-57A and AN/SSQ-57XN5 calibrated sonobuoys . The temperature …
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Ambient noise measurements in the 200-300 Hz band during the Greenland Sea tomography experiment
… in 1988, and a year long time series of ambient noise in the 200-300 Hz was collected by those moorings. Large scale meteorological environmental information, particularly wind, was provided during that same year by the British Meteorological Office. Time series of ice type and ice concentration …
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The Quiet Classroom Game with an Indiscriminable Contingency in a High School
… group contingency utilized to decrease classroom noise levels, increase student engagement, and decrease disruptive behaviors in the classroom setting. The purpose of the current study was to investigate the effects of the QCG in three high school classrooms in the Southeastern United States. …
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Noise Characerization For Proposed UCF Phyiscal Science Building Sites.
Today's Advance Technology Facilities require low noise levels and increased noise monitoring. Ambient noise can interfere with the accuracy and precision of experiments and manufacturing processes. Therefore preconstruction site surveys are needed to develop strategies for mitigating noise. …
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Noise and Time Pressure Effects on Situation Awareness and Aviation Maintenance Tasks
… very susceptible to the deafening occupational noise from the airport vicinity or the maintenance machinery itself. Compared to a base maintenance working period, a line maintenance job requires AMTs to complete a task within a short time frame. The current study's objective is to determine if …
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The Quiet Cafeteria Game
… the academic success of students. Specifically, noisemaking is a disruptive behavior that educators report as being one of the most concerning disruptive behaviors, thus, increasing the need for effective interventions to address disruptive behavior in non-classroom settings (Sun & Shek, 2012). …
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Oceanic ambient noise in the Arctic on the Chukchi Shelf: broadband characteristics and environmental drivers
… encompasses an analysis of underwater ambient noise collected by the yearlong Canada Basin Acoustic Propagation Experiment (CANAPE) on the Chukchi Shelf of the Arctic. This location contained the Beaufort Duct, a significant effect of climate change on the Arctic’s underwater soundscape. A …
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Wind Tunnel Testing to Evaluate Noise Emissions from a Small Wind Turbine
… environmental standards aimed at decreasing noise levels in the design and manufacture of these machines. This study was carried out in the Carleton University Wind Induced Dynamic Laboratory (WInDLab) that was designed to evaluate and quantify noise levels emitted by a small horizontal axis …
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Oceanic Ambient Noise in the Arctic on the Chukchi Shelf: Broadband Characteristics and Environmental Drivers
… encompasses an analysis of underwater ambient noise collected by the yearlong Canada Basin Acoustic Propagation Experiment (CANAPE) on the Chukchi Shelf of the Arctic. This location contained the Beaufort Duct, a significant effect of climate change on the Arctic’s underwater soundscape. A …
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Evaluation of external noise produced by vehicles crossing over centerline rumble strips on undivided highways in Kansas
… intended travel lane, by producing vibration and noise when crossed by vehicles’ tires. CLRS have been demonstrated to be an effective way in reducing head on and opposite direction sideswipe on two-lane highways (cross-over accidents). However, there are some disadvantages in their utilization, …
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Patch-based Denoising Algorithms for Single and Multi-view Images
… sensors, where they are often contaminated with noise, which is an undesired random signal. Such noise can also be produced during transmission or by lossy image compression. Reducing the noise and enhancing those images is among the fundamental digital image processing tasks. Improving the …
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Development and Initial Evaluation of an Acoustic Apparatus Used For Testing of Farfield Noise Emitted by a Propeller in a Short Duct
… aircraft in an effort to reduce the overall noise levels emitted. The apparatus consisted of a 35 horsepower ultralight engine, a four bladed ultralight propeller, and a duct constructed of a foam core covered with fiberglass. Initial evaluations compared noise levels from the apparatus both …
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Utilizing Distributed Vibration Absorbers to Reduce Noise Transmission Through the Windshield of a Cessna 150
High levels of noise have historically been present in the interior of aircrafts. This causes passenger, pilot, and other aircraft employee fatigue as well as speech interference and discomfort issues. In general aviation aircraft, little has been done to reduce the noise in the interior of …
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A human factors evaluation of selected touch entry devices
… out that large difference in resolution and noise levels exist among the various TEDs examined. Four of the devices tended to reduce overall display resolution and three reduced display noise levels. Large differences in interactive operator performance scores and ratings of subjective …
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Comparative evaluation of the AES-Chemunex lab blender Smasher®, Seward Stomacher®, Interscience Bagmixer® and Pulsifier® on viable cell counts of foods, noise level, ergonomics, and ease of cleaning
… of viable cell counts/g of ten food types, 2) Noise level of the four instruments ascertained by a) human and b) decibel meter at five feet (1.52 meters) from each instrument, 3) Ease in cleaning the instruments after use, and 4) Ergonomics. Following the ISO Method (7218:2007), 25 g each of …
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