Results 221 to 230 of about 15,358,732 (380)

Ultrafast Untethered Levitation Device Utilized Squeeze Film for Omni‐Directional Transport

open access: yesAdvanced Intelligent Systems, EarlyView.
Untethered levitation device (106 g, 95 × 72 × 45 mm3) on squeeze film is generated by a piezoelectric actuator with onboard electronics (77 g). It achieves frictionless and omnidirectional movement over 1.4 and 3.0 ms−1 on horizontal and inclined surfaces respectively.
Yuta Sunohara   +8 more
wiley   +1 more source

Developmental study of early posture control in preterm and fullterm infants [PDF]

open access: gold, 2002
Eliane Mewes Gaetan   +1 more
openalex   +1 more source

Treecreeper Drone: Adaptive Mechanism for Passive Tree Trunk Perching

open access: yesAdvanced Intelligent Systems, EarlyView.
Taking inspiration from treecreepers, a passively triggered aerial robot that can reliably perch on vertical tree trunks is presented. The friction‐based approach combines a microspine array with a tail‐like support, and then validates via dynamic analyses and flight experiments, ensuring stable performance across trunk diameters and bark textures ...
Haichuan Li   +2 more
wiley   +1 more source

Multi‐Risk‐Level Sarcopenia‐Prone Screening via Machine Learning Classification of Sit‐to‐Stand Motion Metrics from Wearable Sensors

open access: yesAdvanced Intelligent Systems, EarlyView.
A machine learning approach utilizes micro inertial measurement units (μIMUs) for noninvasive sarcopenia screening through a sit‐to‐stand test. With 53 older participants wearing IMUs, 510 features are extracted across four motion phases. Five algorithms (support vector machine, K‐nearest neighbors, decision tree, linear discriminant analysis, and ...
Keer Wang   +11 more
wiley   +1 more source

Adolescent standing postural response to backpack loads: a randomised controlled experimental study [PDF]

open access: gold, 2002
Karen Grimmer   +4 more
openalex   +1 more source

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