Results 11 to 20 of about 1,173,515 (384)

Data‐driven performance metrics for neural network learning

International Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri, Mauro Gaggero, Marcello Sanguineti   +2 more
wiley   +1 more source

Stellar Streams Discovered in the Dark Energy Survey [PDF]

Astrophysical Journal, 2018
We perform a search for stellar streams around the Milky Way using the first 3 yr of multiband optical imaging data from the Dark Energy Survey (DES).
N. Shipp, A. Drlica-Wagner, E. Balbinot, P. Ferguson, D. Erkal, D. Erkal, Ting S. Li, K. Bechtol, V. Belokurov, B. Buncher, D. Carollo, M. Kind, M. Kind, K. Kuehn, J. Marshall, A. Pace, E. Rykoff, E. Rykoff, I. Sevilla-Noarbe, E. Sheldon, L. Strigari, A. K. Vivas, B. Yanny, A. Zenteno, T. Abbott, F. Abdalla, F. Abdalla, S. Allam, S. Ávila, S. Ávila, E. Bertin, D. Brooks, D. Burke, D. Burke, J. Carretero, F. Castander, R. Cawthon, M. Crocce, C. Cunha, C. D'Andrea, L. Costa, C. Davis, J. Vicente, S. Desai, H. Diehl, P. Doel, A. Evrard, B. Flaugher, P. Fosalba, J. Frieman, J. Frieman, J. García-Bellido, E. Gaztañaga, D. Gerdes, D. Gruen, D. Gruen, R. Gruendl, R. Gruendl, J. Gschwend, G. Gutiérrez, W. Hartley, W. Hartley, K. Honscheid, B. Hoyle, B. Hoyle, D. James, M. Johnson, E. Krause, E. Krause, N. Kuropatkin, O. Lahav, Huan Lin, M. Maia, M. March, P. Martini, F. Menanteau, F. Menanteau, C. Miller, R. Miquel, R. Nichol, A. Plazas, A. Romer, M. Sako, E. Sánchez, B. Santiago, V. Scarpine, R. Schindler, M. Schubnell, M. Smith, Robert C. Smith, F. Sobreira, E. Suchyta, M. Swanson, G. Tarlé, D. Thomas, D. Tucker, A. Walker, Risa Wechsler, Risa Wechsler   +98 more
semanticscholar   +1 more source

Assessing temporal shifts in lotic fish community structure in the upper Red River basin, Oklahoma

Journal of Freshwater Ecology, 2018
A long-term fish community monitoring program was established by the Oklahoma Department of Wildlife Conservation Streams Program in 2016. One of the primary goals of this program is to evaluate contemporary fish species distributions in Oklahoma and ...
Trevor A. Starks, Anthony W. Rodger, Donnie King, Matthew Skoog   +3 more
doaj   +1 more source

A new species of Cincticostella Allen, 1971 (Ephemeroptera, Ephemerellidae) from Yunnan, China and establishment of a new species complex [PDF]

ZooKeys
Cincticostella jianchuan sp. nov. from Dali Bai Autonomous Prefecture, Yunnan Province, China, is described based on chorionic structure, nymph, and winged stages. The new species is closely related to C.
Ye-Kang Sun, Rong-Long Yang, Zhi-Wei Tan, Xian-Fu Li, Luke M. Jacobus   +4 more
doaj   +3 more sources

Orbital phase-driven biases in Galactic mass constraints from stellar streams [PDF]

, 2021
One of the most promising tracers of the Galactic potential in the halo region are stellar streams. However, individual stream fits can be limited by systematic biases. To study these individual stream systematics, we fit streams in Milky Way-like galaxies from FIRE cosmological galaxy formation simulations with an analytic gravitational potential by ...
arxiv   +1 more source

Global extent of rivers and streams

Science, 2018
Expanding the role of rivers The surfaces of rivers and streams are interfaces for a host of chemical exchanges with the atmosphere and biosphere. For instance, carbon dioxide outgassing from rivers is estimated to be equivalent to one-fifth of combined ...
G. Allen, T. Pavelsky
semanticscholar   +1 more source

A note on centrifugation for improving freshwater invertebrate sample conservation

Acta Biologica, 2020
Sorting of freshwater invertebrate samples is best done while the animals are still alive. However, sorting in the field generally means less overall sampling can be done in the allotted time.
Antonio G. Valdecasas, Ricardo García-Jiménez, Mercedes Marín F.-Campoamor   +2 more
doaj   +1 more source

To Stream or not to Stream

Medienimpulse, 2020
Die Bühnen und Konzertsäle sind im Frühjahr und Sommer 2020 wegen der coronabedingten Maßnahmen vorübergehend geschlossen. Wie reagiert eine Kunstform wie das Theater, das auf das Live-Erlebnis und mithin auf Nähe und Kontakt abonniert ist, wie kaum eine andere, auf die Ausnahmesituation des Social Distancing?
openaire   +3 more sources

EROSIONAL DEVELOPMENT OF STREAMS AND THEIR DRAINAGE BASINS; HYDROPHYSICAL APPROACH TO QUANTITATIVE MORPHOLOGY

, 1945
The composition of the stream system of a drainage basin can be expressed quantitatively in terms of stream order, drainage density, bifurcation ratio, and stream-length ratio. Stream orders are so chosen that the fingertip or unbranched tributaries are
R. Horton
semanticscholar   +1 more source

Valuable habitats of protected areas in southern Poland – a source of rare and poorly known diatom species

Acta Societatis Botanicorum Poloniae, 2019
The peatbogs and natural upper sections of streams in national parks in southeastern Poland represent unique study areas for research on freshwater diatom diversity.
Teresa Noga
doaj   +1 more source