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The widespread deployment of wireless networks presents an opportunity for localization and mapping using only signal-strength measurements. The current state of the art is to use Gaussian process latent variable models (GP-LVM). This method works well, but relies on a signature uniqueness assumption which limits its applicability to only signal-rich(More)
We describe the core components of the architecture for the National Science Digital Library (NSDL). Over time the NSDL will include heterogeneous users, content, and services. To accommodate this, a design for a technical and organization infrastructure has been formulated based on the notion of a spectrum of interoperability. This paper describes the(More)
We describe the core components of the architecture for the (NSDL) National Science, Mathematics, Engineering, and Technology Education Digital Library. Over time the NSDL will include heterogeneous users, content, and services. To accommodate this, a design for a technical and organization infrastructure has been formulated based on the notion of a(More)
The Digital Anthropology Resources for Teaching (DART) project integrates the content acquisition and cataloging initiatives of a federated digital repository with the development of scholarly publications and the creation of digital tools to facilitate classroom teaching. The project's technical architecture and unique publishing model create a teaching(More)
Establishing a sustainable digital archive for the long-term preservation of heterogeneous scientific digital data poses both technical and organizational challenges for Universities and research institutions that hold scientific data and research-related information using traditional media in scattered departments and units. Cooperative institutional(More)
Video captures the nuances and dynamics of human behavior more cheaply and completely than other recording methods. Although the detailed fidelity of video provides significant potential for reuse, this potential goes largely unrealized because videos are rarely shared. Moreover, the large size of video files, diversity of file formats, and incompatible(More)