Results 71 to 80 of about 22,066 (299)

Chemotactic Maneuverability of Sperm

, 2011
In this fluid mechanics video, we explore the kinematics of chemotaxing sperm cells (sea urchin, \textit{Arbacia punctulata}) swimming in a chemoattractant gradient. We demonstrate that the complex swimming trajectories resulting in chemotactic behavior (`turn-and-run' motility) are comprised of several distinct flagellar maneuvers.
Guasto, Jeffrey S., Riffell, Jeffrey A., Zimmer, Richard K., Stocker, Roman   +3 more
openaire   +2 more sources

Design of a Highly Maneuverable Mobile Robot

Procedia Computer Science, 2012
AbstractDesigning a robust, modular and fast mobile robot which can work in challenging environment is a difficult task. That includes design of mechanical parts and control system of the robot. This paper proposes a new design of mobile robot, which may potentially be used for military, rescue and industrial purpose.
R. Shah, Selahattin Ozcelik, Rajab Challoo   +2 more
openaire   +2 more sources

A Low‐Cost, Handheld Optical Stiffness Sensor for Minimally Invasive Surgery

Advanced Robotics Research, EarlyView.
A novel handheld stiffness sensor is presented for real‐time tissue stiffness characterization. By simultaneously sensing contact force and tissue deformation, the device enables accurate stiffness quantification without requiring precise manual control. This approach offers a promising solution for intraoperative tumor detection and minimally invasive
Qianyu Ma, Ruxiang Jiang, Kaspar Althoefer, Nicolas Herzig, Hareesh Godaba   +4 more
wiley   +1 more source

Maneuverability design and analysis of an autonomous underwater vehicle for deep-sea hydrothermal plume survey

, 2013
SIA is developing a new type asymmetric AUV (SIA-4500AUV) for the purpose of deep-sea hydrothermal plume survey. To ensure the navigational safety in seamount area, the AUV is designed as fish-like vertical flat main hull to improve the maneuverability ...
Gu HT(谷海涛), Liu J(刘健), Yi RW(衣瑞文), Lin Y(林扬), Hu ZQ(胡志强), Ji DX(冀大雄), Wang C(王超)   +6 more
core  

Tradeoff between Stability and Maneuverability during Whole-Body Movements

, 2011
Understanding how stability and/or maneuverability affects motor control strategies can provide insight on moving about safely in an unpredictable world. Stability in human movement has been well-studied while maneuverability has not. Further, a tradeoff
Helen J. Huang, Huang Helen J., Ahmed Alaa A., Alaa A. Ahmed   +3 more
core   +1 more source

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

Advanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

A Worm‐Inspired Origami Robot with Multimodal Locomotion for Adaptive Mobility in Complex Pipeline Environments

Advanced Science, EarlyView.
An origami worm‐inspired robot achieves multimodal locomotion in confined pipelines through mechatronic integration that embeds actuation, control, and communication within each origami module. Large, reversible configuration and dimensional changes enable 25 gaits synthesized by a unified framework across peristaltic, inchworm, and wheel‐rolling modes
Qiwei Zhang, Kangning Tan, Zihan He, Hongsen Pang, Yanjie Wang, Hongbin Fang, Jian Xu   +6 more
wiley   +1 more source

SIRIUS: improving the maneuverability of powered wheelchairs

Proceedings of the International Conference on Control Applications, 2003
The indoor maneuverability of powered wheelchairs may be difficult or bothersome in several circumstances. In this paper, we describe an experimental powered wheelchair named SIRIUS, developed at the University of Seville, which introduces some simple but effective navigation aids. Special emphasis is placed on the implementation of recorded trajectory
Civit Balcells, Antón, Díaz del Río, Fernando, Jiménez Moreno, Gabriel, Sevillano Ramos, José Luis, Amaya Rodríguez, Claudio Antonio, Vicente Díaz, Saturnino   +5 more
openaire   +3 more sources

Brain‐Computer Interface Training Fosters Perceptual Skills to Detect Errors

Advanced Science, EarlyView.
Accurate perception of visuomotor errors underpins motor precision and learning, yet conventional behavioral training fails to improve sensitivity to subtle errors. Real‐time EEG‐based brain‐computer interface feedback targeting the error positivity component enhances perceptual learning of small errors.
Deland H. Liu, Fumiaki Iwane, Minsu Zhang, Leonardo G. Cohen, José del R. Millán   +4 more
wiley   +1 more source

Multi‐Stimuli Responsive Magneto‐Coacervate Droplets for Selective Molecular Enrichment and Programmable Manipulation

Advanced Science, EarlyView.
ABSTRACT Coacervate droplets formed via liquid–liquid phase separation offer unique opportunities as microreactors and delivery vehicles due to their ability to selectively concentrate biomolecules and support biochemical reactions. However, their passive nature severely restricts precise spatial and temporal control, posing barriers to practical ...
Kailang Liu, Haocheng Ran, Haohui Ou, Peiying Chen, Cheng Qi, Tiantian Kong, Zhou Liu   +6 more
wiley   +1 more source