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Sound research at acoustical society meeting
Date:10/18/2011

uples to the object/UXO, the subsequent vibration that ensues, and how the sound radiates from the object back to the viewer. The presentation 1aUW2, "Acoustic scattering from unexploded ordnance in contact with a sand sediment: Mode identification using finite element models," is in the morning session on Monday, Oct. 31.

Abstract: http://asa.aip.org/web2/asa/abstracts/search.oct11/asa57.html

Student test scores suffer from even subtle background noise: Teachers do all they can to provide a productive learning experience for their students, but some factors are beyond their control and may actually be dragging down standardized test scores. According to research on third- and fifth-grade classrooms, fifth-grade students were found to have lower reading test scores in classrooms with higher background noise. A similar negative trend was observed between the fifth-grade language achievement test scores and background noise levels. The noise the researchers measured and compared to test scores was not the expected cacophony of nearby traffic or occasional outbursts from unruly students. Instead the noise came from the steady droning and humming of the air conditioning and heating systems. "Our research shows that many students are forced to learn and teachers are required to work in conditions that simply do not aid in the learning experience," said Lauren M. Ronsse, now with the U.S. Army Engineer Research and Development Center in Champaign, Ill. She and her doctoral advisor Lily M. Wang of the University of Nebraska at Lincoln measured the background noise in 67 unoccupied third- and fifth-grade classrooms in a Nebraska public school district. After the measurements were completed, the researchers compared the background noise levels of the classrooms to the standardized student achievement scores. They observed statistically significant correlations among the fifth-grade stude
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Contact: Charles E. Blue
cblue@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

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