Results 211 to 220 of about 471,318 (301)

On the Convergence of Conjugate Gradient and GMRES Algorithms in the Forward Backward Sweep Method for Optimal Control

Optimal Control Applications and Methods, EarlyView.
Optimal control combines state and adjoint equations, which yield the state (x$$ x $$) and adjoint (lambda) variables as a function of the control variables (u$$ u $$). This structure allows us to design strategies for iteratively updating the control variable, based on conjugate gradient (CG) or GMRES algorithms.
N. Armengou‐Riera, N. Rabiei, A. Bijalwan, A. Rodríguez‐Ferran, J. J. Muñoz   +4 more
wiley   +1 more source

Model fit vs. predictive reliability: a case study of the 1978 influenza outbreak. [PDF]

Sci Rep
Tverskoi D, Rempala GA.
europepmc   +1 more source

Distilling food web dynamics: top–down and bottom–up drivers of extinction and trophic cascades

Oikos, EarlyView.
Quantifying population dynamics is a fundamental challenge in ecology and evolutionary biology, particularly for species that are cryptic, microscopic, or extinct. Traditional approaches rely on continuous representations of population size, but in many cases, the precise number of individuals is unknowable.
Justin D. Yeakel
wiley   +1 more source

Graph-based epidemic modeling of West Nile Virus: Forecasting and containment. [PDF]

F1000Res
Branda F, Ahmed MM, Defilippo A, Lomoio U, Puccio B, Ciccozzi M, Scarpa F, Veltri P, Guzzi PH.   +8 more
europepmc   +1 more source

Meteorological versus spatial drivers of the spatial synchrony of forest insect pest outbreaks in North America

Oikos, EarlyView.
Spatial synchrony of population fluctuations has major consequences for the impacts of forest insect pest outbreaks at regional scales. We tested the predictions that the strength and drivers of this synchrony would differ among species according to their dispersal abilities and feeding guilds.
Kyle J. Haynes, Deepa S. Pureswaran, Andrew J. Allstadt, Jonathan A. Walter, Ian DeMerchant, Andrew M. Liebhold   +5 more
wiley   +1 more source

A new era of political-technical synergy in Africa's cholera response. [PDF]

J Public Health Afr
Ngongo N, Dereje N, Chilengi R, Kaseya J.   +3 more
europepmc   +1 more source

Hunting motivations, behaviour and forest access: Characterising wildlife hunting practices in a multi‐ethnic, forested landscape of Brunei Darussalam, Southeast Asia

People and Nature, EarlyView.
Abstract Unsustainable hunting practices can alter population dynamics, driving biodiversity declines, which leads to ‘empty forests’. Understanding hunting behaviour, including motivations for hunting and relationships with market drivers, and access to hunting grounds are important to develop affirmative policies to stem biodiversity loss.
Natasha L. M. Mannion, Rachel Gaulton, Maria Erica Jamil, Marion Pfeifer, Johan Willem Ferry Slik, Stephen G. Willis, F. Merlin Franco   +6 more
wiley   +1 more source

Progressive Development of a New Tool for Rapid Thematic Analysis of Community Perceptions and Concerns During Health Emergencies. [PDF]

Glob Health Sci Pract
Earle-Richardson G, Nestor C, Prue CE.
europepmc   +1 more source

The impact of COVID‐19 on public perceptions of wild meat in Central Africa

People and Nature, EarlyView.
Abstract Wild meat is a significant source of food and income generation in Central Africa. However, there is little knowledge of how the assumed link between COVID‐19 and wild meat consumption has been discussed by the media and received by the public. In this study, we conducted media content analysis of 264 articles published in 2019–2020 related to
Yuhan Li, Lude Kinzonzi, Paul Loundou, Divin Malekani, Krossy Mavakala, Christian Mikolo Yobo, Katharine Abernethy, Matilda Eve Dunn, Donald Midoko Iponga, Robert Mwinyihali, Joss Wright, Eleanor Jane Milner‐Gulland, Lauren Coad, Juliet H. Wright, Daniel W. S. Challender   +14 more
wiley   +1 more source

Traffic-driven spatio-temporal prediction for fine-scale epidemic outbreaks in China. [PDF]

BMC Infect Dis
Li H, Huang J, Yan W, Hao Z, Wang R, Zhao Y, Hu S, Lian X, Li L.   +8 more
europepmc   +1 more source