Lake Superior State University
Lake Superior State University
 
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Video at ABC.com

Ariel Kelly, a Park and Recreation graduate who is a park ranger at Yosemite National Park, was interviewed as part of a program feature that highlights beautiful places in America.

Parks & Recreation

Parks & Recreation Management challenges the mind and body
Faculty and Staff
 
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Sally Childs


Sally Childs

BS 1971, Eastern Michigan University
MS 1978, Northern Michigan University
PhD 1986, Ohio State University

 

 


  

Lake Superior State University Recreational Studies Professor Sally Childs (right) chats with a former student of hers, Trevor McGinn, about his work at Wells State Park in Menominee County. Childs hosts a half-hour radio show on student radio station WLSO FM 90.1

Under- standing the Fourier Transform

Edward Kramer

Fourier transforms are used for obtaining the frequency spectrum of a signal. For instance, in nuclear magnetic resonance spectroscopy, a molecule’s spin in a magnetic field is analyzed to discover its oscillation frequencies and draw conclusions about its chemical consistency. In this work, the basic definitions and elementary mathematical properties of the Fourier integral, used as the main theoretical tool in Fourier transform analysis, were studied, together with some applications of these properties in computing the Fourier integral of some functions perceived as time signals in order to discover their frequency spectra.

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