The vision of cyberinfrastructure is to provide “the comprehensive infrastructure needed to capitalize on dramatic advances in information technology,” in support of science and engineering applications. The development of collaboration environments based on “science portals” plays an important role in achieving this cyberinfrastructure vision. While online, discipline-specific problem solving ...

This paper combines data grid and web services techniques with information mediation and online mapping approaches to outline a scalable infrastructure for ubiquitous mapping where heterogeneous spatial data can be discovered, accessed, queried, integrated and visualized as maps on both desktop and mobile devices. The grid services infrastructure elements we describe, are being developed within...

In this paper, we take the advantages of extended superquadrics to represent and recognize the entire set of 36 geons. Extended superquadrics are novel volumetric shape models that include superquadrics as a special case. An extended superquadric model can be deformed in any direction because it extends the exponents of the superquadric model from constants to functions of the latitude and long...