Owls
Mostrando 13-24 de 32 artigos, teses e dissertações.
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13. The search for circadian clock components in humans: new perspectives for association studies
Individual circadian clocks entrain differently to environmental cycles (zeitgebers, e.g., light and darkness), earlier or later within the day, leading to different chronotypes. In human populations, the distribution of chronotypes forms a bell-shaped curve, with the extreme early and late types _ larks and owls, respectively _ at its ends. Human chronotype
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-08
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14. Um ambiente para especificação e execução AD-HOC de processos de negócio baseados em serviços Web
Recently the focus given to Web Services and Semantic Web technologies has provided the development of several research projects in different ways to addressing the Web services composition issue. Meanwhile, the challenge of creating an environment that provides the specification of an abstract business process and that it is automatically implemented by a c
Publicado em: 2008
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15. Composição e abundância de corujas em floresta atlântica e sua relação com variáveis de hábitat
A heterogeneidade do habitat pode afetar diretamente ou indiretamente a disponibilidade de recursos necessários para a sobrevivência e reprodução das aves, uma vez que estas selecionam micro-habitats para forrageamento e sítios reprodutivos. As corujas são aves noturnas que desempenham um importante papel no equilíbrio do ecossistema, por evitar super
Publicado em: 2008
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16. Habitat use of Tropical Screech Owl (Megascops choliba) and Burrowing Owl (Athene cunicularia) on patchez of cerrado in state of São Paulo, Brazil / Uso do hábitat da corujinha-do-mato Megascops choliba e da coruja-buraqueira Athene cunicularia (Strigiformes: Strigidae) em remanescentes de cerrado da região central do Estado de São Paulo
The Cerrado biome is the largest, richest and perhaps the most threatened tropical savannah of the world. However, most part of its natural areas has been transformed on agrosystems and pastures where basic principles of conservation werent respected. Each biological group or taxa are affected on different ways by this change. Birds of prey are particularly
Publicado em: 2006
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17. Predation of small mammals by the barn owl (Tyto alba) and its role in the control of hantavirus natural reservoirs in a periurban area in the municipality of Uberlândia, Minas Gerais, Brazil / Predação de pequenos mamíferos por suindara (Tyto alba) e seu papel no controle de reservatórios naturais de hantavírus em uma área periurbana do município de Uberlândia, Minas Gerais, Brasil
Small mammals, especially rodents, are the main prey of the barn owl and its diet is considered an accurated reflex of the local fauna composition and populational flutuations. The principal objectives of this study were to inventory the species of small mammals in the outskirts of the Municipality of Uberlândia, MG, based on the analysis of regurgitated pe
Publicado em: 2006
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18. EXECUÇÃO FLEXÍVEL DE WORKFLOWS / FLEXIBLE WORKFLOW EXECUTION
Workflow management systems usually interpret a workflow definition rigidly, allowing no deviations during execution. However, there are real life situations where users should be allowed to deviate from the prescribed static workflow definition for various reasons, including lack of information about parameter values and unavailability of the required resou
Publicado em: 2005
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19. Phylogenetic correlograms and the evolution of body size in South American owls (Strigiformes)
Nos últimos anos diversos modelos têm sido propostos a fim de realizar inferências sobre processos microevolutivos com base em padrões macroevolutivos obtidos a partir de dados comparativos. Dentre esses, o movimento Browniano e o processo Ornstein-Uhlenbeck (O-U) têm sido utilizados para modelar principalmente deriva genética e seleção estabilizador
Genetics and Molecular Biology. Publicado em: 2000-06
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20. How do owls localize interaurally phase-ambiguous signals?
Owls and other animals, including humans, use the difference in arrival time of sounds between the ears to determine the direction of a sound source in the horizontal plane. When an interaural time difference (ITD) is conveyed by a narrowband signal such as a tone, human beings may fail to derive the direction represented by that ITD. This is because they ca
The National Academy of Sciences.
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21. Early blindness results in a degraded auditory map of space in the optic tectum of the barn owl.
The optic tectum of the barn owl (Tyto alba) contains a neural map of auditory space consisting of neurons that are sharply tuned for sound source location and organized precisely according to their spatial tuning. The importance of vision for the development of this auditory map was investigated by comparing space maps measured in normal owls with those mea
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22. Information optimization in coupled audio-visual cortical maps
Barn owls hunt in the dark by using cues from both sight and sound to locate their prey. This task is facilitated by topographic maps of the external space formed by neurons (e.g., in the optic tectum) that respond to visual or aural signals from a specific direction. Plasticity of these maps has been studied in owls forced to wear prismatic spectacles that
National Academy of Sciences.
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23. Larks and owls and health, wealth, and wisdom
British Medical Journal.
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24. Early visual deprivation results in a degraded motor map in the optic tectum of barn owls.
The optic tectum contains a precise map of orienting movements: the size and direction of movements of the eyes, head, and/or body vary systematically with the locus of neural activation within the tectum. In adult animals, this motor map aligns closely with the tectal map of visual space. This study addressed the question of whether the motor map develops e