Current Search: Bears (x)
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Title
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Behavioral enrichment of captive black bears (Ursus americanus).
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Creator
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Gonzalez, Jasmine, Harriet L. Wilkes Honors College
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Abstract/Description
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A crucial aspect of captive animal care is enrichment, ranging from simple additions of flora to complicated foraging puzzles. Enrichments are vital in creating an environment for animals that is similar to their wild habitat and eliciting natural behaviors. Enrichment is also used to inhibit unnatural or harmful behaviors, like pacing. Commonly, enrichment techniques are not scientifically tested, and the universality of enrichments is rarely scrutinized. This study explores the universality...
Show moreA crucial aspect of captive animal care is enrichment, ranging from simple additions of flora to complicated foraging puzzles. Enrichments are vital in creating an environment for animals that is similar to their wild habitat and eliciting natural behaviors. Enrichment is also used to inhibit unnatural or harmful behaviors, like pacing. Commonly, enrichment techniques are not scientifically tested, and the universality of enrichments is rarely scrutinized. This study explores the universality of a "Snak'n'Trim", a hollow ball 10 inches in diameter with a 1 inch opening for food items to be inserted into the ball. Four bears, (two male, two female) were observed for ten weeks, five in the summer and five in the winter. Daily observations were made during baseline and enrichment trials. Behavior frequency was calculated and results indicate a significant (p<.01) difference between baseline and enrichment trials, providing evidence for the efficacy of the Snak'n'Trim.
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Date Issued
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2012
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PURL
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http://purl.flvc.org/FAU/3359302, http://purl.flvc.org/fau/fd/FADT3359302
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Subject Headings
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Captive wild animals, Black bear, Behavior, Black bear, Habitat, Social behavior in animals, Black bear, Effect of human beings on
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Format
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Document (PDF)
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Title
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Vibrational analysis of a journal bearing.
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Creator
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Journeau, Franck Daniel., Florida Atlantic University, Cuschieri, Joseph M.
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Abstract/Description
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A Statistical Energy Analysis (SEA) approach is used to investigate the vibrational behavior of a journal bearing. In developing the SEA model, consideration is given to the determination of coupling loss factors between non-conservatively coupled substructures. In the case of the journal bearing, the oil film between the rotating shaft and the bearing liner represents non-conservative coupling. The coupling loss factors are estimated using experimentally measured point mobility functions....
Show moreA Statistical Energy Analysis (SEA) approach is used to investigate the vibrational behavior of a journal bearing. In developing the SEA model, consideration is given to the determination of coupling loss factors between non-conservatively coupled substructures. In the case of the journal bearing, the oil film between the rotating shaft and the bearing liner represents non-conservative coupling. The coupling loss factors are estimated using experimentally measured point mobility functions. The internal loss factors are directly measured with the bearing structure disassembled. Additionally, estimates for the coupling and internal loss factors are obtained in-situ using an energy ratio approach. Using the determined coupling and internal loss factors in an SEA model, estimates for the average mean square velocities on the surface of the bearing subcomponents are obtained for both static and dynamics conditions. The SEA estimates match well with directly measured results for the spatial average surface velocities at medium to high frequencies.
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Date Issued
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1992
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PURL
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http://purl.flvc.org/fcla/dt/14786
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Subject Headings
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Journal bearings, Machinery--Noise, Couplings, Vibration
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Format
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Document (PDF)
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Title
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Behavioral Enrichment of Captive Black Bears (Ursus americanus).
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Creator
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Gonzalez, Jasmine, Allard, Stephanie, Earles, Julie, Wetterer, James K.
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Date Issued
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2012-04-06
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PURL
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http://purl.flvc.org/fcla/dt/3348822
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Subject Headings
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Bears, Captive wild animals, Animal welfare, Environmental enrichment, Ursus americanus
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Format
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Document (PDF)
