Results 51 to 60 of about 7,414 (207)

Strategic adjustment of parental care in tree swallows: life-history trade-offs and the role of glucocorticoids [PDF]

open access: yesRoyal Society Open Science, 2016
Life-history theory predicts that optimal strategies of parental investment will depend on ecological and social factors, such as current brood value and offspring need.
Çağlar Akçay   +5 more
doaj   +1 more source

Light‐Driven Quadrupedal Walking Biohybrid Robot With Antagonistic Muscle‐Rings and Inclined Joints

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a light‐driven quadrupedal walking biohybrid robot powered by antagonistic muscle‐rings that achieve alternating walking gait. Optical training improved reproducibility of cultured muscle tissues, while caffeine treatment enhanced contractile force.
Shotaro Saito   +5 more
wiley   +1 more source

Female song and vocal interactions with males in a Neotropical wren

open access: yesFrontiers in Ecology and Evolution, 2015
Bird song is thought to function primarily in same-sex competition, mate attraction, and reproductive stimulation of a partner. However, these conclusions are based largely on studies of the song of male birds in north-temperate species.
Michelle L Hall   +2 more
doaj   +1 more source

Programmable Information Processing With Reconfigurable Self‐Contact Variable Stiffness Mechanical Metamaterial

open access: yesAdvanced Science, EarlyView.
Reconfigurable self‐contact variable stiffness metamaterials based on shape memory polymers enable programmable stiffness switching. Static arrays store and encrypt information with immunity to electromagnetic interference, while asymmetric stiffness converts symmetric vibration into directional matter transport.
Huadong Qin   +7 more
wiley   +1 more source

An attention bias test to assess anxiety states in laying hens [PDF]

open access: yesPeerJ, 2019
Fear is a response to a known threat, anxiety is a response to a perceived threat. Both of these affective states can be detrimental to animal welfare in modern housing environments.
Dana L.M. Campbell   +5 more
doaj   +2 more sources

A Multimodal Intelligent System for Human Digital Twin Simulation with Continuous Kinematic Data Tracking, Biometric Prognosis, and Cognitive State Feedback in Industrial Environments

open access: yesAdvanced Intelligent Discovery, EarlyView.
This article implements a unified human digital twin framework that integrates cutting edge actuation, sensing, simulation, and bidirectional feedback capability. The approach includes integrating multimodal sensing, AI, and biomechanical simulation into one compact system.
Tajbeed Ahmed Chowdhury   +4 more
wiley   +1 more source

Dance behaviour in cockatoos: Implications for cognitive processes and welfare.

open access: yesPLoS ONE
Parrots (Aves, Psittaciformes) in captivity have been reported to show dance behaviour in response to music, which may involve complex cognitive processes including imitation, vocal learning and entrainment.
Natasha Lubke   +3 more
doaj   +1 more source

Food‐solicitation displays in nestling birds: still begging for answers

open access: yesBiological Reviews, EarlyView.
ABSTRACT Nestling begging is a key model for understanding animal communication and parent–offspring conflict. Dynamic begging displays are often interpreted as costly, honest signals of need, with honesty maintained by viability costs, as proposed in Godfray's influential signalling model.
Daniel Parejo‐Pulido, Tomás Redondo
wiley   +1 more source

Modeling and Output Optimization of Triboelectric Microphone for Acoustic Energy Harvesting

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work elucidates the fundamental multiphysics coupling mechanisms governing acoustic T‐phone, providing a critical theoretical foundation and a predictive design paradigm for the future engineering and deployment of next‐generation, self‐powered acoustic sensors.
Dan Liu   +6 more
wiley   +1 more source

Manufacturing Nostalgia in the Digital Age: A Foreverism Perspective

open access: yesPsychology &Marketing, EarlyView.
ABSTRACT Many scholars argue that we are experiencing the era of “retro”—nostalgia‐driven marketing and consumption phenomena reinforced by digital technologies. However, existing research lacks a critical analysis of nostalgia in contemporary markets and of how digital content, tools, and environments transform retro consumption experiences and alter ...
Dinara Davlembayeva   +4 more
wiley   +1 more source

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