We develop a rigorous theory of observation for dynamical systems in Hilbert spaces. This work generalizes the results of Ott and Yorke [8] for dynamical systems in Rn.

Collaborative approaches based upon volunteered input into shared Internet-based resources are beginning to offer a radical and new alterative to more traditional mapping. This paper explores the potential of one of the most developed of these ‘open’ maps, in a case study of the OpenStreetMap project and of the practices deployed during a ‘mapping party’ in Manchester. The successes and weaknes...

When characterizing the information structure of sentences, the so-called focus identifies the part of a sentence addressing the current question under discussion in the discourse. While this notion is precisely defined in formal semantics and potentially very useful in theoretical and practical terms, it has turned out to be difficult to reliably annotate focus in corpus data. We present a new...

Edward Balaban∗ NASA Ames Research Center, Moffett Field, California 94035 Abhinav Saxena SGT, Inc., NASA Ames Research Center, Moffett Field, California 94035 Sriram Narasimhan University ofCalifornia, SantaCruz,NASAAmes ResearchCenter,Moffett Field, California 94035 Indranil Roychoudhury SGT, Inc., NASA Ames Research Center, Moffett Field, California 94035 Michael Koopmans Tesla Motors, Palo ...

Several factors contribute to successful swim performance, but how are they affected by impaired vision? The purpose of this study was to examine the relationship between degree of visual impairment and performance variables during the 100m freestyle and backstroke events in Paralympic swimmers and to compare the performances with those of Olympic swimmers. A competition video analysis conducte...

This work concerns pattern formation in vertically driven granular media. We generalize the work of Shankar C. Vankataramani and Edward Ott to test notions about patterns found in vertically driven granular media. A generalization of this model is present along with some of the preliminary results.

Lactobacillus leichmannii (ATCC 4797) was reported by Skeggs et al. (1) to grow in an otherwise complete medium in response to increasing amounts of the “animal protein factor.” The reports of Ott ef al. (2) and Emerson (3) have demonstrated the probable identity of crystalline vitamin Blz with the “animal protein factor.” The use of another strain of L. leichmannii (313) in the microbiological...

Juan G. Restrepo, 2, ∗ Edward Ott, 3 and Brian R. Hunt 4 1 Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742 2 Department of Mathematics, University of Maryland, College Park, Maryland 20742 3 Department of Physics and Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742 4 Institute ...