Global ETD Search
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 10 of 10 for “"sperm whales"”.
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Tracking sperm whales using passive acoustics and particle filters
… practical method using particle filters to track sperm whales. Sperm whales are the ideal subject species for this kind of development because the high sound pressure levels of their impulsive vocalisations (up to 236 dB re 1 ?Pa) makes them relatively simple to detect. Simulation tracking results …
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Echolocation-based foraging by harbor porpoises and sperm whales, including effects of noise and acoustic propagation
… I apply those methods to test for changes in sperm whale foraging behavior in response to airgun noise exposure. Test results indicate that, despite the low-level exposures experienced by the whales in the study, some (but not all) of them reduced their buzz production rates and altered other …
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Echolocation-based foraging by harbor porpoises and sperm whales, including effects of noise and acoustic propagation
… I apply those methods to test for changes in sperm whale foraging behavior in response to airgun noise exposure. Test results indicate that, despite the low-level exposures experienced by the whales in the study, some (but not all) of them reduced their buzz production rates and altered other …
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Genetic analysis of the sperm whale (Physeter macrocephalus) using microsatellites.
The sperm whale is the largest of the toothed whales (Odontoceti), and inhabits deep waters from equatorial to Polar Regions. Sperm whales are social and commonly l r . found in small groups. However, sociality varies according to sex and age. Immature males form bachelor groups that disperse as …
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Scrimshaw: unlocking the cultural and biological archive of sea mammal art
… ‘scrimshaw’, predominantly using the teeth of sperm whales (Physeter macrocephalus), flourished among the crews of industrial whaling ships. Scrimshaw collections represent a unique cultural and biological archive of pre-industrial/industrial sperm whale populations, but the rarity, …
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A First Step Towards Understanding Sperm Whale Communication and Behavior
… patterns. In this work each section uses sperm whales as the species of focus, however the work is easily adaptable and applicable to any species that we can collect audio or movement data for.
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Decoding the Depths: Developing a Click Separator for Predictive Speaker Recognition in Sperm Whale Conversations Using Machine Learning
… the development of a tool that transcribes sperm whale communication similar to how human speech is recorded and transformed into written text. Sperm whales communicate using a sophisticated system of clicks and codas. Listening through hundreds of hours of sperm whale audio recordings, …
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Isolation and Genomic Analysis of the Cetacean Y-chromosome
… from heterologous sequences amplified from sperm whales (Physeter macrocephalus), were also screened for variation. All 31 markers were monomorphic in the bottlenose dolphin, only 2 loci showed 2 variants in the killer whale and 7 were polymorphic in the sperm whale. In addition 162 …
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Discovering and Engineering the Computation Underlying Large Intelligent Agents
… the naturally arising communication system of sperm whales in the wild, discovering for the first time a unique combinatorial communication system. Finally, I apply insights from these results to equip embodied agents with a latent language of thought—hierarchical and compositional—and show how …
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Comparative Functional Genomics Characterization of Low Phytic Acid Soybeans and Virus Resistant Soybeans
… as miniscule as mycoplasmas to as great as sperm whales. In particular, functional genomics is instrumental in agricultural advancements for the improvement of productivity and sustainability in crop and livestock production. Improvement in soybean production is especially imperative, as …