We live in an information society, and, resultantly, significant attention is devoted to ensure ‗‗information-based rights'' are protected among other essential human rights.Fostering and protecting information-based rights is essential to human well being, and the traditional strategies to support these rights focus on ensuring free and unfettered access to information, such as the right to education, the freedom to read, or providing for fair use of copyright-protected works. While ensuring informational goods and services are accessible is necessary for participation in our contemporary information society, we argue, however, that given the complexity of our information environment, additional factors must be considered within any information-based rights frame-work. Building on Amartya Sen's capability approach, we suggest that individuals' ability to access and use infor-mation is influenced by their relative capabilities. Those advocating for information-based rights -2 such as the free software, access to knowledge, and open access movements -must adjust their focus to include not only achieving access, but also the fostering of human capabilities.

Preliminary results will be presented for the second TTCP Environmental Signal Processing Exercise (TESPEX 2), which was conducted in June 1994 in shallow waters north of Darwin, Australia. There were two objectives: (1) demonstrate improvements in environmental source tracking [Collins et al., J. Acoust. Soc. Am. 94, 3335 (1993)] (a single-frequency, single-hydrophone synthetic-aperture tracking technique) by relying on a second, horizontally separated hydrophone, and (2) determine the horizontal resolution the environment provides to a vertical array through matched-field processing [Perkins and Kuperman, J. Acoust. Soc. Am. 87, 1553 (1990)]. The approach was to first characterize the region by towing a high-SNR source throughout the region and measure the replica fields using two vertical line arrays separated by several kilometers (one with 32 elements, the other 4 elements), and then to use this data to form the replicas needed to track the source as it traversed the region alone a variety of tracks. The measured replicas are supplemented by modeled replicas; the environment used in the modeling is determined by inverting the measured data. We present preliminary processing results relevant to both objectives, including environmental inversions and tracking with measured and modeled replicas. a)Present address: Scripps Institution of Oceanography, La Jolla, CA 92093.