منابع مشابه
Acute pancreatitis in parrots.
Acute pancreatitis was diagnosed in three parrots. Antemortem diagnosis of pancreatitis in the avian patient is rarely documented, and should be suspected in birds showing clinical signs attributable to abdominal pain or gastro-intestinal dysfunction. However, not all birds with confirmed pancreatitis display these signs. A serum amylase level greater than 1,500 U/L is suggestive of pancreatiti...
متن کاملFluorescent signaling in parrots.
Fluorescent pigments appear to glow because ultraviolet (UV) light is absorbed and reemitted at longer wavelengths. Humans use fluorescence as a highlighter, but it remains a mystery whether naturally occurring fluorescence functions as a signal or is a by-product of pigment structure. Here, we test for evidence of signaling using the fluorescent plumage of parrots (1). We performed mate choice...
متن کاملTalking head detection by likelihood-ratio test
Detecting accurately when a person whose face is visible in an audio-visual medium is the audible speaker is an enabling technology with a number of useful applications. These include fused audio/visual speaker recognition, AV (audio/visual) segmentation and diarization as well as AV synchronization. The likelihood-ratio test formulation and feature signal processing employed here allow the use...
متن کاملD-Theory: Talking about Talking about Trees
Linguists, including computational linguists, have always been fond of talking about trees. In this paper, we outline a theory of linguistic structure which talks about talking about trees; we call this theory Description theory (D-theory). While important issues must be resolved before a complete picture of D-theory emerges (and also before we can build programs which utilize it), we believe t...
متن کاملLaterality enhances cognition in Australian parrots.
Cerebral lateralization refers to the division of information processing in either hemisphere of the brain and is a ubiquitous trait among vertebrates and invertebrates. Given its widespread occurrence, it is likely that cerebral lateralization confers a fitness advantage. It has been hypothesized that this advantage takes the form of enhanced cognitive function, potentially via a dual processi...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/257070b0