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Despite a growing need, oceanographers are limited by existing technological constrains and are unable to observe aquatic microbes in their natural setting. In order to provide a simple and easy to implement solution for such studies, a new Thin Light Sheet Microscope (TLSM) has been developed. The TLSM utilizes a well-defined sheet of laser light, which(More)
The Automatic Vocal Transaction Analyzer was designed to recognize the pattern of certain variables in spontaneous vocal transactions. In addition, it records these variables directly in a machine-readable form and preserves their sequential relationships. This permits the immediate extraction of data by a digital computer. The AVTA system reliability has(More)
With the increasing sophistication of both manned and unmanned systems for remote ocean exploration, a wealth of knowledge about heretofore-unknown oceanic processes has become available. However, no technologies currently exist to observe organisms and processes without disturbing them, as they move with the natural motion of the oceans. We propose a new(More)
There is a growing interest in using underwater networked systems for oceanographic applications. These networks often rely on acoustic communication, which poses a number of challenges for reliable data transmission. The underwater acoustic channel is highly variable; each link can experience vastly different conditions, which change according to(More)
Surprisingly little is known about underwater marine environments and ecosystems owing to several factors. One important factor has been the general inability to observe and monitor these massive subsurface ocean spaces. Despite significant advances in sensor, communication and computing technology, underwater sensor platforms are generally inferior to(More)
Positioning is a crucial requirement for mobile underwater systems. Since GPS is not available underwater the position of vehicles has to be estimated over time. Underwater navigation techniques often rely on acoustic communication with reference beacons that know their location. These beacons in effect act as GPS satellites for underwater vehicles. The(More)
In this article a performance bound is derived for feasible image resolution among a class of imaging systems that can be referred to as synchronous laser line scan systems. Most often, these systems use a narrow beam projected source (typically a laser) in conjunction with a very small field of view receiver that is synchronously scanned. Here, a bound on(More)