Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Greg Fletcher"'
Publikováno v:
ACM Transactions on Sensor Networks. 11:1-22
Existing solutions to carrier-based sensor placement by a single robot in a bounded unknown Region of Interest (ROI) do not guarantee full area coverage or termination. We propose a novel localized algorithm, named Back-Tracking Deployment (BTD). To
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baa8e24ed4f513b6af7c0da3cac1a9c4
https://doi.org/10.1145/2632149
https://doi.org/10.1145/2632149
Publikováno v:
Ad Hoc Networks. 11:1951-1962
A wireless sensor network (WSN) is an effective surveillance tool for various applications. One of its functional bases is coverage. Stochastic node dropping and node failure greatly impair coverage, creating sensing holes, while redundant sensors ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc414a4777b0f624bb73bd303a1b00b8
https://doi.org/10.1016/j.adhoc.2012.06.007
https://doi.org/10.1016/j.adhoc.2012.06.007
Analysis of Titan's neutral upper atmosphere from Cassini Ion Neutral Mass Spectrometer measurements
Autor:
E. Raaen, Véronique Vuitton, E. L. Patrick, Greg Fletcher, Ingo Müller-Wodarg, David A. Gell, Roger V. Yelle, Wayne Kasprzak, Brian Magee, J. H. Waite, Hasso B. Niemann, Jun Cui, N. Borggren
Publikováno v:
Icarus
Icarus, Elsevier, 2009, 200 (issue 2), pp.581-615. ⟨10.1016/j.icarus.2008.12.005⟩
Icarus, Elsevier, 2009, 200 (issue 2), pp.581-615. ⟨10.1016/j.icarus.2008.12.005⟩
In this paper we present an in-depth study of the distributions of various neutral species in Titan's upper atmosphere, between 950 and 1500 km for abundant species (N2, CH4, H2) and between 950 and 1200 km for other minor species. Our analysis is ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::263f7fad4aa88f1d73e8267deaef6556
https://doi.org/10.1016/j.icarus.2008.12.005
https://doi.org/10.1016/j.icarus.2008.12.005
Autor:
Thomas E. Cravens, Michael R. Combi, J. Hunter Waite, Janet G. Luhmann, Hasso B. Niemann, Jonathan I. Lunine, Wayne Kasprzak, Greg Fletcher, Ralph L. McNutt, Brian Magee, Wei-Ling Tseng, Wing-Huen Ip, David A. Gell, Roger V. Yelle
Publikováno v:
Science. 311:1419-1422
The Cassini spacecraft passed within 168.2 kilometers of the surface above the southern hemisphere at 19:55:22 universal time coordinated on 14 July 2005 during its closest approach to Enceladus. Before and after this time, a substantial atmospheric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e17d0a00d7e7a3aadf8dbafb4f4e60a4
https://doi.org/10.1126/science.1121290
https://doi.org/10.1126/science.1121290
Autor:
Wayne Kasprzak, J. E. Richards, Wing-Huen Ip, Bruce P. Block, Greg Fletcher, Rob Thorpe, Roger V. Yelle, Hasso B. Niemann, Ralph L. McNutt, J. H. Waite, Janet G. Luhmann, W. S. Lewis, Erin Walter, Vincent G. Anicich, Thomas E. Cravens, John K. Parejko
Publikováno v:
Space Science Reviews. 114:113-231
The Cassini Ion and Neutral Mass Spectrometer (INMS) investigation will determine the mass composition and number densities of neutral species and low-energy ions in key regions of the Saturn system. The primary focus of the INMS investigation is on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb4adac15d19c8341c01d18e09cca9cf
https://doi.org/10.1007/s11214-004-1408-2
https://doi.org/10.1007/s11214-004-1408-2
Autor:
Ralph L. McNutt, Brian Magee, D. G. Mitchell, H. Todd Smith, J. Hunter Waite, Mark E. Perry, Ben Teolis, Wayne Kasprzak, Greg Fletcher
Publikováno v:
Journal of Geophysical Research: Space Physics. 115
[1] In 2008, the Cassini ion neutral mass spectrometer (INMS) investigation made in situ measurements of neutral species near Saturn's equatorial plane within 0.5 Saturn radii (RS) of the orbit of Enceladus. After removing the large background and mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc25fb93b0ce01693636a2aa796a06fe
https://doi.org/10.1029/2010ja015248
https://doi.org/10.1029/2010ja015248
Publikováno v:
VTC Fall
In wireless sensor networks (WSN), stochastic node dropping and unpredictable node failure greatly impair coverage, creating sensing holes, while locally redundant sensors exist. If sensors are all equipped with locomotion, they will be able to reloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4c068560deac1beceb89396fa470fc1
https://doi.org/10.1109/vetecf.2010.5594513
https://doi.org/10.1109/vetecf.2010.5594513
Publikováno v:
SECON
We propose a novel localized carrier-based sensor placement algorithm, named Back-Tracking Deployment (BTD). Mobile robots (carriers) carry static sensors and drop them at visited empty vertices of a virtual square, triangular or hexagonal grid in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e6b9d333d4fc95d1c3e4e57f9053007
https://doi.org/10.1109/secon.2010.5508232
https://doi.org/10.1109/secon.2010.5508232
Autor:
Ralph L. McNutt, Wing-Huen Ip, Hasso B. Niemann, Brian Magee, Ken Arnett, Erin Walter, N. Borggren, Janet G. Luhmann, Virginie De La Haye, Ingo Müller-Wordag, Roger V. Yelle, S. Ledvina, Wayne Kasprzak, Thomas E. Cravens, David A. Gell, Ryan M. Miller, J. Hunter Waite, Jing Xu, Stefan Scherer, Greg Fletcher, Rob Thorpe, Bruce P. Block
Publikováno v:
Science (New York, N.Y.). 308(5724)
The Cassini Ion Neutral Mass Spectrometer (INMS) has obtained the first in situ composition measurements of the neutral densities of molecular nitrogen, methane, molecular hydrogen, argon, and a host of stable carbon-nitrile compounds in Titan's uppe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::670b57e6296aa8b0b61acf05b7d7129e
https://pubmed.ncbi.nlm.nih.gov/15890873
https://pubmed.ncbi.nlm.nih.gov/15890873
Publikováno v:
Critical Care Medicine. 34:2030
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d5840ad0d3424ba266138874aa4c7ab
https://doi.org/10.1097/01.ccm.0000226408.12828.8a
https://doi.org/10.1097/01.ccm.0000226408.12828.8a