Results 231 to 240 of about 1,952,544 (384)

The cosmological constant problem and the effective potential of a gravity-coupled scalar

open access: yesJournal of High Energy Physics
We consider a quantum scalar field in a classical (Euclidean) De Sitter background, whose radius is fixed dynamically by Einstein’s equations. In the case of a free scalar, it has been shown by Becker and Reuter that if one regulates the quantum ...
Renata Ferrero, Roberto Percacci
doaj   +1 more source

R2 GRAVITY IN (2+ε)-DIMENSIONAL QUANTUM GRAVITY [PDF]

open access: green, 1994
Jun Nishimura   +2 more
openalex   +1 more source

Parametric Design of Continuum Robots Using Interlocking Ball Joints

open access: yesAdvanced Intelligent Systems, EarlyView.
Herein, a parametric design methodology is introduced for producing a wide variety of modular ball joint‐based continuum robots. It is demonstrate by designing a magnetically actuated continuum robot for cardiac ablations. The methodology is released as an open‐source computer‐assisted design extension that automatically designs continuum robots based ...
Alexandre Mesot   +5 more
wiley   +1 more source

Autonomous Sorting of Beads in a 3D Environment Using Levitating Magnetic Microrobots

open access: yesAdvanced Intelligent Systems, EarlyView.
An untethered, magnetically actuated microrobot autonomously collects, weighs, classifies, and sorts passive particles in 3D environments. The system integrates motion control, trajectory planning, and action scheduling to perform fully automated operations.
Franco N. Piñan Basualdo   +3 more
wiley   +1 more source

Theory Of Quantum Gravity

open access: yes, 2019
Basically this theory has been developed to propose an oscillating universe. According to my theory, the matter is the only origin of gravity. In this theory all fundamental physical entities such as space, time, matter, force, energy and others are used in their usual meanings as in classical mechanics. The space and time are not related to each other.
openaire   +1 more source

Bioinspired and Sustainable Physical Unclonable Functions with Antibacterial Microstructures

open access: yesAdvanced Intelligent Systems, EarlyView.
An eco‐friendly physical unclonable function (PUF), named HECTA, is developed through spontaneous self‐assembly of hydroxyethyl cellulose (HEC) and tannic acid (TA), forming unique microstructures via hydrogen bonding. Exhibiting high reproducibility, ideal security metrics, and antibacterial activity, this sustainable PUF presents secure ...
Sora Han   +8 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

Precise Real‐Time Measurement of Liquid Viscosity Using Digital Video Data

open access: yesAdvanced Intelligent Systems, EarlyView.
Frame‐by‐frame image similarity analysis is employed to obtain the viscosity of moving liquids in real time. The method allows for online implementation even in harsh environments, replacing complex and invasive experiments. Quantitative knowledge of liquid viscosity is of fundamental importance in many areas of materials synthesis and processing ...
Zhiwen Pan   +7 more
wiley   +1 more source

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