Zobrazeno 1 - 10
of 62
pro vyhledávání: '"P. R. Gazis"'
Publikováno v:
Publications of the Astronomical Society of the Pacific. 122:1518-1525
Scientific data sets continue to increase in both size and complexity. In the past, dedicated graphics systems at supercomputing centers were required to visualize large data sets, but as the price of commodity graphics hardware has dropped and its c
Publikováno v:
The Astrophysical Journal. 706:623-636
Expanding upon the work of Way and Srivastava 2006 we demonstrate how the use of training sets of comparable size continue to make Gaussian process regression (GPR) a competitive approach to that of neural networks and other least-squares fitting met
Autor:
J. T. Gosling, Peter Wurz, L. Rodriguez, Volker Bothmer, A. Kilchenmann, Ian G. Richardson, R. von Steiger, John D. Richardson, Robert F. Wimmer-Schweingruber, A. Balogh, Timothy S. Horbury, Pete Riley, Thomas H. Zurbuchen, P. R. Gazis, R. J. Forsyth, N. U. Crooker
Publikováno v:
Space Science Reviews. 123:177-216
While interplanetary coronal mass ejections (ICMEs) are understood to be the heliospheric counterparts of CMEs, with signatures undeniably linked to the CME process, the variability of these signatures and questions about mapping to observed CME feat
Autor:
Robert B. Decker, George Siscoe, R. von Steiger, József Kóta, M. S. Potgieter, Harald Kucharek, L. Rodriguez, David Lario, Timothy S. Horbury, P. R. Gazis, Silvia Dalla, H. Kunow, A. Kilchenmann, Bernd Heber, John D. Richardson, Pete Riley, André Balogh
Publikováno v:
Space Science Reviews. 123:417-451
Interplanetary coronal mass ejections (ICMEs) propagate into the outer heliosphere, where they can have a significant effect on the structure, evolution, and morphology of the solar wind, particularly during times of high solar activity. They are kno
Publikováno v:
Data Mining and Knowledge Discovery. 6:277-293
Reflectance spectroscopy is a standard tool for studying the mineral composition of rock and soil samples and for remote sensing of terrestrial and extraterrestrial surfaces. We describe research on automated methods of mineral identification from re
Autor:
Keith Horton, Horton E. Newsom, Jeffrey E. Moersch, Ted L. Roush, Janice L. Bishop, Charles S. Cockell, Nathalie A. Cabrol, Jeffrey R. Johnson, Carol R. Stoker, Steven W. Ruff, P. R. Gazis
Publikováno v:
Journal of Geophysical Research: Planets. 106:7683-7711
Upcoming Mars Surveyor lander missions will include extensive spectroscopic capabilities designed to improve interpretations of the mineralogy and geology of landing sites on Mars. The 1999 Marsokhod Field Experiment (MFE) was a Mars rover simulation
Autor:
P. R. Gazis, T. Roush
Publikováno v:
Journal of Geophysical Research: Planets. 106:7765-7773
An autonomous system has been developed to identify the presence of carbonates in near-IR reflectance spectra (0.35–2.5 μm). This system consists of a set of feature-extraction algorithms that operate in conjunction with a rule-based system to ide
A large-scale survey of corotating interaction regions and their successors in the outer heliosphere
Autor:
P. R. Gazis
Publikováno v:
Journal of Geophysical Research: Space Physics. 105:19-33
Corotating interaction regions (CIRs) and their successors play an important role in the structure and dynamics of the outer heliosphere. CIRs, consisting of a forward and reverse shock pair in association with a region of enhanced solar wind density
Autor:
Joseph R. Dwyer, M. S. Potgieter, G. M. Mason, A. J. Lazarus, J. R. Jokipii, Ian G. Richardson, V. J. Pizzo, Robert B. Decker, Louis J. Lanzerotti, D. S. Intriligator, S. V. Chalov, R. A. Burger, Frank B. McDonald, P. R. Gazis
Publikováno v:
Space Science Reviews. 89:269-305
We discuss the structure and evolution of CIRs and their successors in the outer helio- sphere. These structures undergo significant evolution as they are convected to greater heliocentric distances. A progression of different types of structure are
Autor:
Edmond C. Roelof, J. R. Jokipii, Volker Bothmer, A. Hewish, Ian G. Richardson, Arik Posner, Martin A. Lee, P. R. Gazis, J. M. Schmidt, R. J. Forsyth, J. T. Gosling, Eckart Marsch, Bruce T. Tsurutani, Robert Wimmer-Schweingruber, A. J. Lazarus, D. S. Intrilligator, Timothy S. Horbury, George Siscoe, N. U. Crooker, Elizabeth Lucek, József Kóta
Publikováno v:
Space Science Reviews. 89:179-220
Corotating interaction regions (CIRs) in the middle heliosphere have distinct morpholog- ical features and associated patterns of turbulence and energetic particles. This report summarizes current understanding of those features and patterns, discuss