A necessary and sufficient condition for a central simple algebra with involution over a field of characteristic two to be decomposable as a tensor product of quaternion algebras with involution, in terms of its Frobenius subalgebras, is given. It is also proved that a bilinear Pfister form, recently introduced by A. Dolphin, can classify totally decomposable central simple algebras of orthogon...

DOLPHIN is a framework for the development of high performance, multi-language and multiarchitecture compilers. This framework contains several components, but is specially prepared to help the development of the middle-level task of the compilation process. It contains a large set of analysis and optimizations routines, several front-ends and back-ends, and a set of tools to help the developme...

This paper describes an underwater object discrimination system applied to recognize cylinders of various compositions from diierent angles. The system is based on a new combination of simulated dolphin clicks, simulated auditory lters and artiicial neural networks. The model demonstrates its potential on real data collected from four diierent cylinders in an environment where the angles were c...

Let X be an integral affine or projective hypersurface over a field F of characteristic p > 0, and let F (X) denote its function field. In a recent article, Dolphin and Hoffmann obtained an explicit description of the kernel of the natural restriction homomorphism between the rings of absolute Kähler differentials of F and F (X), respectively. In this note, we examine the possibility of derivin...

Diverse and localized foraging behaviours have been reported in isolated populations of many animal species around the world. In Laguna, southern Brazil, a subset of resident bottlenose dolphins (Tursiops truncatus) uses a foraging tactic involving cooperative interactions with local, beach-casting fishermen. We used individual photo-identification data to assess whether cooperative and non-coo...

This research aids our understanding of how the stress-response operates in marine mammals by evaluating markers of stress in a captive dolphin population. This research effort will determine baseline levels of putative stress hormones and evaluate the functional consequences of increased stress in the bottlenose dolphin (Tursiops truncatus) through the assessment of non-traditional biochemical...

Surveys to assess cetacean presence were conducted in July 1995 and 1997 in the Gulf of Corinth, which is an almost-enclosed sea in Greece, Eastern Mediterranean. The dolphin sighting frequencies were high (0.043 sightings/km). Four dolphin species were encountered: striped dolphins (Stenella coeruleoalba), short-beaked common dolphins (Delphinus delphis), Risso’s dolphins (Grampus griseus) and...

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Dolphins exhibit an extraordinary capacity to heal deep soft tissue injuries. Nevertheless, accelerated wound healing in wild or captive dolphins would minimize infection and other side effects associated with open wounds in marine animals. Here, we propose the use of a biological-based therapy for wound healing in dolphins by the application of platelet-rich plasma (PRP). Blood samples were co...