Results 31 to 40 of about 16,091 (233)

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Ground state of superheavy elements with $120 \leq Z \leq 170$: systematic study of the electron-correlation, Breit, and QED effects

, 2023
For superheavy elements with atomic numbers $120\leq Z \leq 170$, the concept of the ground-state configuration is being reexamined. To this end, relativistic calculations of the electronic structure of the low-lying levels are carried out by means of ...
Tupitsyn, I. I., Shabaev, V. M., Savelyev, I. M., Kozhedub, Y. S., Malyshev, A. V., Kaygorodov, M. Y.   +5 more
core   +1 more source

Grip and Grasp: Lizard Claw Inspired Robotic Manipulators

Advanced Robotics Research, EarlyView.
Our study identifies the most effective lizard claw shape for use as an end effector in a bioinspired robotic manipulator. By examining key geometric features and combining them into comparative indices, the Crotaphytus collaris claw is found to be the best fit.
Hyeon Lee, Kate Douglas, Asyiah Bray, Andrea Rummel, Parvez Alam   +4 more
wiley   +1 more source

FiN‐Kiri: Fabric‐Based Inflatable Kirigami Actuator for Multimodal Soft Robots

Advanced Robotics Research, EarlyView.
This study introduces a type of inflatable fabric‐based kirigami actuator capable of performing bending motion. The actuator is utilized as soft grippers, a crawling robot and a swimming robot. The crawling robot demonstrated extraordinary motion capabilities, such as moving forward, turning and navigating a narrow tunnel.
Yang Yu, Yupei Zhang, Yanqi Yin, Yehui Wu, Jinyao Zhang, Ruiyu Bai, Jiaqiang Yao, Kewei Su, Chenyi Yu, Zhicheng Tian, Naipeng Li, Zhuang Zhang, Bo Li   +12 more
wiley   +1 more source

Avaliação de protetores auditivos em campo [PDF]

, 2001
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.Há cerca de 2500 anos, a humanidade conhece os efeitos prejudiciais do ruído à saúde do organismo humano. No entanto,
Francisco, Laudinei Lauro
core  

The Thermal Sunyaev-Zel'dovich Effect from Massive, Quiescent 0.5 $\leq$ z $\leq$ 1.5 Galaxies

, 2023
We use combined South Pole Telescope (SPT)+Planck temperature maps to analyze the circumgalactic medium (CGM) encompassing 138,235 massive, quiescent 0.5 $\leq$ z $\leq$ 1.5 galaxies selected from data from the Dark Energy Survey (DES) and Wide-Field ...
Sarmento, Richard, Cottle, J'Neil, Meinke, Jeremy, Lunde, Emily, Mauskopf, Philip, Cohen, Seth, Scannapieco, Evan, Böckmann, Kathrin   +7 more
core   +1 more source

Universally Accurate or Specifically Inadequate? Stress‐Testing General Purpose Machine Learning Interatomic Potentials

Advanced Intelligent Discovery, EarlyView.
We investigate MACE‐MP‐0 and M3GNet, two general‐purpose machine learning potentials, in materials discovery and find that both generally yield reliable predictions. At the same time, both potentials show a bias towards overstabilizing high energy metastable states. We deduce a metric to quantify when these potentials are safe to use.
Konstantin S. Jakob, Karsten Reuter, Johannes T. Margraf   +2 more
wiley   +1 more source

The Challenge of Handling Structured Missingness in Integrated Data Sources

Advanced Intelligent Discovery, EarlyView.
As data integration becomes ever more prevalent, a new research question that emerges is how to handle missing values that will inevitably arise in these large‐scale integrated databases? This missingness can be described as structured missingness, encompassing scenarios involving multivariate missingness mechanisms and deterministic, nonrandom ...
James Jackson, Marius Hofert, Eleni‐Rosalina Andrinopoulou, Niels Hagenbuch, Sarah McGough, Chris Harbron, Robin Mitra   +6 more
wiley   +1 more source

Expectations of the size evolution of massive galaxies at $3 \leq z \leq 6$ from the TNG50 simulation: the CEERS/JWST view

, 2023
We present a catalog of about 25,000 images of massive ($M_{\star} \ge 10^9 M_{\odot}$) galaxies at redshift $3 \leq z \leq 6$ from the TNG50 cosmological simulation, tailored for observations at multiple wavelengths carried out with JWST.
Kartaltepe, Jeyhan S., Bagley, Micaela B., Holwerda, Benne, Yung, L. Y. Aaron, Cooper, Michael C., Finkelstein, Steven L., Costantin, Luca, Cleri, Nikko J., Pirzkal, Nor, Huertas-Company, Marc, Tacchella, Sandro, Bisigello, Laura, Koekemoer, Anton M., Pillepich, Annalisa, Vega-Ferrero, Jesús, Papovich, Casey, Buitrago, Fernando, Nelson, Dylan, Pérez-González, Pablo G.   +18 more
core   +1 more source