Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Frank A. Deviney"'
1
Atmospheric Wet Deposition in Remote Regions: Benchmarks for Environmental Change
Autor: Frank A. Deviney, Jennie L. Moody, William C. Keene, Gene E. Likens, James N. Galloway, Kerri N. Mikkelsen, John R. Maben
Publikováno v: Journal of the Atmospheric Sciences. 72:2947-2978
Precipitation composition was characterized at 14 remote sites between 65°N and 51°S. Anthropogenic sources contributed to non-sea-salt (nss) SO42−, NO3−, and NH4+ in North Atlantic precipitation. Biogenic sources accounted for 0.4–3.3 μeq L
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4eaa1f3526a6b48653c4800a912e8c9
https://doi.org/10.1175/jas-d-14-0378.1
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3
Calculating feature importance in data streams with concept drift using Online Random Forest
Autor: Frank A. Deviney, Andrew Phelps Cassidy
Publikováno v: BigData Conference
Large volume data streams with concept drift have garnered a great deal of attention in the machine learning community. Numerous researchers have proposed online learning algorithms that train iteratively from new observations, and provide continuous
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a08a0e6ba9ef9b97894215e18e6a2c43
https://doi.org/10.1109/bigdata.2014.7004352
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4
[Untitled]
Autor: James N. Galloway, Nancy M. Castro, Keith N. Eshleman, Steven W. Seagle, James R. Webb, Robert H. Gardner, Daniel A. Fiscus, Alan T. Herlihy, Frank A. Deviney
Publikováno v: Environmental Monitoring and Assessment. 63:187-197
The objective of this research project is to develop, test, validate, and demonstrate an analytical framework for assessing regional-scale forest disturbance in the mid-Atlantic region by linking forest disturbance and forest nitrogen export to surfa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1370c6b6917b9ff6831ec706c38d0a0
https://doi.org/10.1023/a:1006427401665
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5
Temporal patterns of nitrogen leakage from mid-Appalachian forested watersheds: Role of insect defoliation
Autor: James N. Galloway, James R. Webb, Keith N. Eshleman, Raymond P. Morgan, Frank A. Deviney
Publikováno v: Water Resources Research. 34:2005-2016
Fluxes of dissolved nitrogen (N) as nitrate from forested watersheds in the mid-Appalachian region have important water quality ramifications for small acid-sensitive streams and for downstream receiving waters such as the Chesapeake Bay. Previous st
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4dbf3f26ef2a1cbc5edbe7b0187e205
https://doi.org/10.1029/98wr01198
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6
Change in the acid-base status of an appalachian mountain catchment following forest defoliation by the gypsy moth
Autor: James N. Galloway, Frank A. Deviney, K. N. Eshleman, James R. Webb, Bernard J. Cosby
Publikováno v: Water, Air, and Soil Pollution. 85:535-540
Infestation by the gypsy moth (Lymantria dispar) can alter biogeochemical conditions in affected catchments. Stream-water concentration data obtained over the period of 1980–1993 for White Oak Run, a stream in Shenandoah National Park, Va., indicat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::166c1bf11d5e0585151f7f657b54444f
https://doi.org/10.1007/bf00476884
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7
Evaluation of Bayesian Estimation of a Hidden Continuous-Time Markov Chain Model with Application to Threshold Violation in Water-Quality Indicators
Autor: Frank A. Deviney, D. E. Brown, Karen C. Rice
Publikováno v: Journal of Environmental Informatics.
Natural resource managers require information concerning the frequency, duration, and long-term probability of occurrence of water-quality indicator (WQI) violations of defined thresholds. The timing of these threshold crossings often is hidden from
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eff9c0f72fa4b9bd4c799edb417b8037
https://doi.org/10.3808/jei.201200210
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8
Streamwater acid-base chemistry and critical loads of atmospheric sulfur deposition in Shenandoah National Park, Virginia
Autor: Bernard J. Cosby, Timothy J. Sullivan, James R. Webb, Robin L. Dennis, Arthur J. Bulger, Frank A. Deviney
Publikováno v: Environmental Monitoring and Assessment. 137
A modeling study was conducted to evaluate the acid-base chemistry of streams within Shenandoah National Park, Virginia and to project future responses to sulfur (S) and nitrogen (N) atmospheric emissions controls. Many of the major stream systems in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d1b9de33301aab0c8256207bb94bb1
https://doi.org/10.1007/s10661-007-9731-1
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10
Time series and recurrence interval models to predict the vulnerability of streams to episodic acidification in Shenandoah National Park, Virginia
Autor: Frank A. Deviney, George M. Hornberger, Karen C. Rice
Publikováno v: Water Resources Research. 42
[1] Acid rain affects headwater streams by temporarily reducing the acid-neutralizing capacity (ANC) of the water, a process termed episodic acidification. The increase in acidic components in stream water can have deleterious effects on the aquatic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88bac9f622c393f69c2be3b0ca9bebad
https://doi.org/10.1029/2005wr004740
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