Abstract: A method for fractal image compression using reinforced learning is disclosed. The reinforced learning algorithm improves the performance of fractal image compression algorithms by improving image partitioning and transform family selection while considering the impact of domain to range matching. The present invention differs from other fractal image compression algorithms in that it makes decisions about transform family and image partitioning by generalizing from experience compressing small portions of an image to compressing an image as a whole.

Abstract: The present invention relates to systems and methods for generating and displaying an immersive three-dimensional visual environments. In preferred aspects of the invention, the system uses a central processing unit which contains a low-cost commodity chip. The immersive system can further comprise a voice recognition component which is utilized to manipulate the visual environment.

Abstract: The present invention relates to methods and systems for teaching thinking skills. A user can be provided with information and then presented with questions and examples which enable the user to investigate the usefulness of the information and analyze its content, meaning, and point of view. The questions and examples are designed to develop thinking skills in the user, permitting the user to simultaneously learn the information while acquiring skills in thinking.

Abstract: The present invention relates to all aspects of a guanine exchange factor (GEF), for example, a Rho-GEF, such as p115 Rho-GEF. A GEF modulates cell signaling pathways, both in in vitro and in vivo, by modulating the activity of a GTPase. By way of illustration, a p115 Rho-GEF, which modulates the activity of a Rho GTPase, is described. However, the present invention relates to other GEFs, especially other Rho-GEFs. The present invention particularly relates to an isolated p115 Rho-GEF polypeptide or fragments of it, a nucleic acid coding for p115 Rho-GEF or fragments of it, and derivatives of the polypeptide and nucleic acid. The invention also relates to methods of using such polypeptides, nucleic acids, or derivatives thereof, e.g., in therapeutics, diagnostics, and as research tools.