Results 181 to 190 of about 9,100,775 (301)

Polynomial‐shaped electrodes for adaptive X‐ray optics

open access: yesJournal of Synchrotron Radiation, EarlyView.
A shaped electrode design for lithium niobate adaptive X‐ray mirrors connects actuator degrees of freedom to specific polynomial orders, enabling general shape control and the correction of defocus, coma and fourth‐order aberrations with a limited number of inputs.For adaptive mirrors on X‐ray beamlines and optical systems, we describe a strategy for ...
Kenneth A. Goldberg   +2 more
wiley   +1 more source

From analytical to data‐driven: multi‐method optimization of a bendable mirror system for dynamic focusing

open access: yesJournal of Synchrotron Radiation, EarlyView.
A small‐radius‐of‐curvature bendable mirror system is developed for dynamic focusing in X‐ray free‐electron laser and synchrotron radiation beamlines, and a transfer‐learning neural‐network and differential‐evolution framework is used for force‐to‐shape modeling and inverse optimization.
Baoning Sun   +14 more
wiley   +1 more source

Complexity promotes stability in mutualistic networks through weaker mutualistic dependencies: Insights from Generalized Modelling

open access: yesJournal of Animal Ecology, EarlyView.
We show that complexity, but not nestedness or modularity, increase dynamical stability of mutualistic networks, mainly through a weakening in mutualistic dependencies with complexity. Abstract Mutualistic networks provide essential contributions to long‐term ecosystem functioning and food security, but Anthropocene stressors continue to alter their ...
Timo Metz   +3 more
wiley   +1 more source

Fear generalization, cross‐sensitization and behavioural responses to multiple dangers in a freshwater snail

open access: yesJournal of Animal Ecology, EarlyView.
We show that juvenile exposure to a danger can not only prime individuals to be more responsive to that same danger later in life but also to an ostensibly unrelated danger. These patterns of behavioural cross‐sensitization can have important ecological implications for how animals respond to multiple and novel stressors. Abstract Behavioural responses
Janice L. Yan   +3 more
wiley   +1 more source

Water Use Behavior of Individual Birds: Ring Ouzels in an Arid High‐Mountain Ecosystem

open access: yesIntegrative Zoology, EarlyView.
Water is a limiting resource for birds in arid ecosystems. Individual birds differ strongly in how they use shared water sources, with drinking behavior increasing with temperature. Behavioral differences, hierarchy, and social context ultimately shape unequal access to water within the population. ABSTRACT Water availability strongly constrains animal
Tamara Burgos   +4 more
wiley   +1 more source

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