In 1950 Bassen and Kornzweig described a new syndrome when they reported the presence of irregular erythrocytes in an 18-year-old Jewish girl who had retinitis pigmentosa and a neurological disorder similar to Friedreich's ataxia. Several years later they described the same triad (abnormal erythrocytes, retinitis pigmentosa, and neuropathy) in the patient's brother (Kornzweig and Bassen, 1957)....

We study a model in which heterogenous boundedly rational agents interact locally in order to play a coordination game. Agents di®er in their mobility with mobile agents being able to relocate within a country. The model yields the following predictions: (1) mobile agents always bene ̄t from increased mobility, (2) immobile agents bene ̄t from increased mobility at low levels of mobility, (3) imm...

Language acquisition is a ubiquitous, challenging problem involving fundamental cognitive abilities of attention, learning, and memory. From infants to adult travelers, language learners are faced with figuring out which words refer to which referents from situations that contain many words and referents. By remembering the words and referents (e.g., objects) that co-occur most frequently over ...

An electromechanical analysis Tim Elston Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM 87545 Alexander Mogilner Department of Mathematics, University of California, Davis, CA 95616 Aravi Samuel Department of Molecular & Cellular Biology, Harvard University, Cambridge, MA 02138 Rowland Institute for Science, Cambridge, MA 02142 George Oster Department of Molecular ...

This report describes the robot, Curious George, that took part in, and won, the robot league of the 2007 Semantic Robot Vision Challenge (SRVC), held at the AAAI’07 conference in Vancouver, Canada. We describe the robot hardware, the algorithms used during each of the three competition phases, as well as the results obtained by the system during the competition.

IT IS WELL KNOWN that immunologic disturbances, particularly autoimmunity, are frequently associated with the chronic lymphoproliferative diseases. Indeed, it is sometimes difficult in such cases to be certain where the imm’nunologic disorder ends and the neoplastic process begins.’ Included in the long list of autoimmune phenomena found in this disease group have been autoimmune hemolytic a,ie...

A case is reported of a 12-year-old boy with Di Guglielmo's syndrome who achieved complete remission for over three years before developing a central nervous system relapse. The poor results of treatment in this disease are reviewed and the arguments for routine central nervous system prophylaxis discussed.

'Overlap syndrome' describes the situation in which two or more 'independent' conditions are present, either one of which could cause a particular finding. This current presentation reports a case with bilateral pigment dispersion syndrome (PDS), advanced pigmentary glaucoma (PG), and the Marfan syndrome, with bilateral subluxation of the lenses, and large short-term and long-term fluctuations ...