Results 201 to 210 of about 1,925,015 (386)

Spin foam models with finite groups

open access: yes, 2011
Spin foam models, loop quantum gravity and group field theory are discussed as quantum gravity candidate theories and usually involve a continuous Lie group.
Bahr, Benjamin   +2 more
core  

Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions

open access: yesAdvanced Intelligent Systems, EarlyView.
Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley   +1 more source

Quantum conformal gravity

open access: yesJournal of High Energy Physics
Abstract We present the manifestly covariant canonical operator formalism of a Weyl invariant (or equivalently, a locally scale invariant) gravity whose classical action consists of the well-known conformal gravity and Weyl invariant scalar-tensor gravity, on the basis of the Becchi-Rouet-Stora-Tyupin (BRST) formalism.
Ichiro Oda, Misaki Ohta
openaire   +3 more sources

Toward Autonomous Self‐Healing in Soft Robotics: A Review and Perspective for Future Research

open access: yesAdvanced Intelligent Systems, EarlyView.
In this article, five different phases (damage detection, cleaning, damage closure, material healing, and healing assessment) are investigated to have an autonomous self‐healing at the system level with the focus on soft robotics. It delves into the importance of each phase, why and where they matter, and reviews relevant technologies that enable ...
Seyedreza Kashef Tabrizian   +2 more
wiley   +1 more source

Semiclassical limits of simplicial quantum gravity [PDF]

open access: green, 1994
John W. Barrett, Timothy J. Foxon
openalex   +1 more source

Quantum Riemannian Geometry and Black Holes

open access: yes, 2006
Black Holes have always played a central role in investigations of quantum gravity. This includes both conceptual issues such as the role of classical singularities and information loss, and technical ones to probe the consistency of candidate theories ...
Bojowald, Martin
core  

Design and Analysis for a Diving‐Beetle‐Inspired Swimming Robot with Multi‐Flexible Appendages

open access: yesAdvanced Intelligent Systems, EarlyView.
This article presents a bionic underwater robot inspired by the swimming behavior of diving beetles. The robot features flexible appendages and a specialized motion controller to mimic the beetle's swimming gaits. Extensive experiments show improved thrust, speed, and maneuverability.
Xinyi Gao   +6 more
wiley   +1 more source

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