Results 71 to 80 of about 33,047,881 (379)

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

When a Short‐Term Outlook Is the Best Long‐Term Strategy: Time‐Varying Risk of Readmission After Acute Myocardial Infarction

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2018
See Article by Khot et ...
Andrew E. Levy, Larry A. Allen
doaj   +1 more source

Revisiting interdependence in times and terms of crisis [PDF]

Journal of Human Rights, 2020
Scholars and lawyers have long debated the meaning of the interdependence of human rights. Revisiting that question in the context of the COVID-19 pandemic demonstrates both that the substantive en...
openaire   +2 more sources

Deep Learning with Long Short-Term Memory for Time Series Prediction

, 2018
Time series prediction can be generalized as a process that extracts useful information from historical records and then determines future values. Learning long-range dependencies that are embedded in time series is often an obstacle for most algorithms,
Chen, Xianfu, Hua, Yuxiu, Li, Rongpeng, Liu, Zhiming, Zhang, Honggang, Zhao, Zhifeng   +5 more
core   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

An Expansion Term In Hamilton's Equations [PDF]

, 1999
For any given spacetime the choice of time coordinate is undetermined. A particular choice is the absolute time associated with a preferred vector field. Using the absolute time Hamilton's equations are $- (\delta H_{c})/(\delta q)=\dot{\pi}+\Theta\pi,
Adkins C. J., Arnold V. I., Arnowitt R., Hargreaves R., Hawking S. W., M. D Roberts, Roberts M. D., Roberts M. D., Rund H., Wald R. M.   +9 more
core   +2 more sources

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

On a generalised model for time-dependent variance with long-term memory

, 2007
The ARCH process (R. F. Engle, 1982) constitutes a paradigmatic generator of stochastic time series with time-dependent variance like it appears on a wide broad of systems besides economics in which ARCH was born.
Andersen T. G. Bollerslev T. Christofferssen P. F. Diebold F. X., Beck C., Borland L., Bouchaud J. P., Curado E. M. F., Curado E. M. F., Curado E. M. F., Duarte Queirós S. M., Engle R. F., Feder J., Gardiner C. W., Gell-Mann M., Mantegna R. N., Pobodnik B., S. M. Duarte Queirós, Skjeltorp A. T.   +15 more
core   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Identification of a Time-Dependent Source Term in Multi-Term Time–Space Fractional Diffusion Equations

Mathematics
This paper investigates the inverse problem of identifying a time-dependent source term in multi-term time–space fractional diffusion Equations (TSFDE).
Yushan Li, Yuxuan Yang, Nanbo Chen
doaj   +1 more source