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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.

Filter Total Items: 5519

Time-optimum packet scheduling for many-to-one routing in wireless sensor networks Time-optimum packet scheduling for many-to-one routing in wireless sensor networks

This paper studies the WSN application scenario with periodical traffic from all sensors to a sink. We present a time-optimum and energy-efficient packet scheduling algorithm and its distributed implementation. We first give a general many-to-one packet scheduling algorithm for wireless networks, and then prove that it is time-optimum and costs max(2N(u1) - 1, N(u 0) -1) time slots...
Authors
W.-Z. Song, F. Yuan, R. LaHuser

Trends in the occurrence of MTBE in drinking water in the Northeast United States Trends in the occurrence of MTBE in drinking water in the Northeast United States

Public water systems in Connecticut, Maine, Maryland, New Hampshire, New Jersey, and Rhode Island sampled treated drinking water from 1993-2006 and analyzed the samples for MTBE. The US Geological Survey examined trends in the occurrence of MTBE in drinking water derived from ground water in these States for two near-decadal time steps; 1993-1999 and 2000-2006. MTBE was detected in 14%...
Authors
M.J. Moran

Tsunami inundation and sediment transport in vicinity of coastal mangrove forest Tsunami inundation and sediment transport in vicinity of coastal mangrove forest

Field measurements from Sumatra of tsunami wave height, erosion and deposition form a comprehensive data set that is tested against the Delft3D tsunami inundation and sediment transport model. Relative agreement between measured and modeled maximum water levels and sediment erosion and accumulation provides confidence that the model is reasonably characterizing the important processes of...
Authors
G. Gelfenbaum, D. Vatvani, B. Jaffe, F. Dekker

Two-dimensional surface river flow patterns measured with paired RiverSondes Two-dimensional surface river flow patterns measured with paired RiverSondes

Two RiverSondes were operated simultaneously in close proximity in order to provide a two-dimensional map of river surface velocity. The initial test was carried out at Threemile Slough in central California. The two radars were installed about 135 m apart on the same bank of the channel. Each radar used a 3-yagi antenna array and determined signal directions using direction finding. The...
Authors
C.C. Teague, D.E. Barrick, P.M. Lilleboe, R. T. Cheng

Upper Neogene tephrochronologic correlations in the northern Rio Grande Rift, New Mexico and southern Colorado Upper Neogene tephrochronologic correlations in the northern Rio Grande Rift, New Mexico and southern Colorado

No abstract available.
Authors
Janet L. Slate, Andrei M. Sarna-Wojcicki, Elmira Wan, Daniel Koning, Sean D. Connell, David P. Dethier, David B. Wahl, Michael Perkins
By
Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center

USGS advances in integrated, high-resolution sea-floor mapping: inner continental shelf to estuaries USGS advances in integrated, high-resolution sea-floor mapping: inner continental shelf to estuaries

The U.S. Geological Survey (USGS) has been involved in geological mapping of the sea floor for the past thirty years. Early geophysical and acoustic mapping efforts using GLORIA (Geologic LOng Range Inclined ASDIC) a long-range sidescan-sonar system, provided broad-scale imagery of deep waters within the U.S. Exclusive Economic Zone (EEZ). In the early 1990's, research emphasis shifted...
Authors
J. F. Denny, W. C. Schwab, D.C. Twichell, T.F. O’Brien, W. W. Danforth, D.S. Foster, E. Bergeron, C.W. Worley, B.J. Irwin, B. Butman, P. C. Valentine, W. E. Baldwin, R.A. Morton, E.R. Thieler, D.R. Nichols, B.D. Andrews
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
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