Underwater acoustic (UWA) communications have attracted a lot of interest in recent years motivated by a wide range of applications including offshore oil field exploration and monitoring, oceanographic data collection, environmental monitoring, disaster prevention, and port security. Different signaling solutions have been developed to date including non-coherent communications, phase coherent...

Our goal was to demonstrate a wireless communications system capable of simultaneous, high speed data communications, particularly adapted for use with conventional foil strain gauges. We have previously described data logging transceiver nodes capable of 2K samples/second/channel data rates. However, only one node may stream data at a time, since all nodes on the network share the communicatio...

The growth in simulation capability over the past 20 years has led to remarkable changes in the design process for gas turbines. The availability of relatively cheap computational power coupled to improvements in numerical methods and physical modelling in simulation codes have enabled the development of aircraft propulsion systems that are more powerful and yet more efficient than ever before....

We investigated advantages and drawbacks of wireless BAN (Body Area network) sy~tems using UWB(Ultra Wide Band) wireless technology that are expected robustness against inteJference, low power consumption, and little inte1ference to a body for healthcare. Two types of low and high frequency bands for ·uws were examined .using various vital sensors for hospital and home bedside monitoring. The h...

In this paper we present an educational micro-world in which a learner can manipulate variables affecting the efficiency with which a team adapts to its environment. These include the structure of hierarchical relations within the team, the structure of the communications network, and other environmental parameters. Using the micro-world, the learner can design experiments (simulations) explori...

In this paper we present methods to generate terrain models for mountainous regions. For these regions analytical and statistical methods are unsuitable for predicting service coverage probability, call blocking and termination probabilities. Modeled terrains are used to simulate environmental conditions in integrated mobile terrestrial and satellite communications systems. A coverage analysis ...

We investigated advantages and drawbacks of wireless BAN (Body Area network) sy~tems using UWB(Ultra Wide Band) wireless technology that are expected robustness against inteJference, low power consumption, and little inte1ference to a body for healthcare. Two types of low and high frequency bands for ·uws were examined .using various vital sensors for hospital and home bedside monitoring. The h...

Applications: analyzing microarray data and high-throughput chemical data in pharmaceutical applications; identifying gene products, elucidating protein folding pathways; detecting and classifying cancer; modeling combinatorial structure of large social, computer, and communication networks; identifying potential terrorist cells in communications networks; identifying noisy images of targets an...

*Corresponding author: Mailing address: Department of Virology II, National Institute of Infectious Diseases, Gakuen 4-71, Musashi-murayama, Tokyo 208-0011, Japan. E-mail: oka-t @nih.go.jp **Present address: Ehime Central Prefectural Hospital, Ehime, Japan ***Retired from Ehime Prefecture Institute of Public Health and Environmental Science ****Present address: Research Collaboration Center on ...