Digital Infrastructures: Enabling Civil and Environmental by Rae Zimmerman, Thomas A. Horan

By Rae Zimmerman, Thomas A. Horan

An invisible community of electronic know-how structures underlies the hugely obvious networks of roads, waterways, satellites, and power-lines. more and more, those structures have gotten the ''infrastructure's infrastructure,'' offering a very important array of information on community call for, functionality, reliability, and defense. electronic Infrastructures provides an interdisciplinary research of the technological platforms that envelop those networks. The publication balances analyses of particular civil and environmental infrastructures with broader coverage and administration concerns, together with the demanding situations of utilizing IT to control those serious platforms lower than crises stipulations.

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Any time information is put to multiple uses or crosses organizational boundaries it is likely to increase complexity significantly. For example, Rabaey et al. (2001) envision the use of widely dispersed sensors and actuators across the power network 29 William O’Brien and Lucio Soibelman (including sensors in buildings at point of electrical consumption) to radically improve the efficiency of power generation and distribution. Of course, such a vision requires integration of thousands of information systems across numerous agencies and facility owners.

Two independent responses of the SAW sensor (wave velocity and attenuation) are measured to provide information about the chemical species absorbed by the coating. The changes in the wave velocity and attenuation occur because the film coating the sensor softens and becomes heavier when it absorbs the contaminant. Sensing is rapid and reversible, and coatings can be optimized for particular chemical selectivity and sensitivity. SAW technology allows the manufacturing of a smaller, lighter, and most importantly, more chemical specific instruments.

Sivan, U. and Braun, E. (2003) “DNA-Templated Carbon Nanotube Field-Effect Transistor,” Science, Vol. 302: 1310, November 21. Marland, G. M. H. and Herman, R. : National Academy Press. Masciangioli, T. and Zhang, W-X. (2003) “Environmental Technologies at the Nanoscale,” Environmental Science & Technology, March, 1 pp. 103A–8A. : National Academy Press. : National Academy Press. : National Academy Press. National Science Board (2002) Science & Engineering Indicators – 2002. Vol. 2: Appendix Tables, Arlington, VA: National Science Foundation (NSB-02-1), Online.

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