Results 61 to 70 of about 1,342,913 (205)

No presentism in quantum gravity [PDF]

open access: yes, 2010
This essay offers a reaction to the recent resurgence of presentism in the philosophy of time. What is of particular interest in this renaissance is that a number of recent arguments supporting presentism are crafted in an untypically naturalistic vein ...
Christian Wüthrich, Wuthrich, Christian
core   +1 more source

Quantum Gravity Meets &HPS [PDF]

open access: yes, 2010
I examine the early history of quantum gravity and comment on its suitability as an episode that demands an integrated approach to history and philosophy of ...
Rickles, Dean
core  

Environmental influences on the maximum quantum yield of terrestrial primary production

open access: yesNew Phytologist, Volume 251, Issue 4, Page 1709-1722, August 2026.
Temperature and aridity effects on terrestrial ecosystems' intrinsic quantum yield. Summary Historically, terrestrial biosphere models (TBMs) have assigned the intrinsic (maximum) quantum yield of photosynthesis (ϕ0) a constant value for each plant functional type. However, experimental studies have shown that ϕ0 – when measured on light‐adapted leaves
David Sandoval   +3 more
wiley   +1 more source

Quantum Gravity: A Primer for Philosophers. [PDF]

open access: yes, 2008
‘Quantum Gravity’ does not denote any existing theory: the field of quantum gravity is very much a ‘work in progress’. As you will see in this chapter, there are multiple lines of attack each with the same core goal: to find a theory that unifies, in ...
Rickles, Dean
core  

A locally finite model for gravity [PDF]

open access: yes, 2008
Matter interacting classically with gravity in 3+1 dimensions usually gives rise to a continuum of degrees of freedom, so that, in any attempt to quantize the theory, ultraviolet divergences are nearly inevitable.
't Hooft, G.   +3 more
core   +2 more sources

Generalized Task‐Driven Design of Soft Robots via Reduced‐Order Finite Element Method‐Based Surrogate Modeling

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 7, July 2026.
A unified, reusable modeling pipeline enables task‐driven design of soft robots across actuator families and task scenarios. High‐fidelity simulations are compressed into compact pseudo‐rigid‐body joint surrogates, while a design‐conditioned meta‐model generates new surrogates from geometry parameters without rerunning finite element method.
Yao Yao, David Howard, Perla Maiolino
wiley   +1 more source

The dynamics of cosmological scenarios inspired by quantum gravity [PDF]

open access: yes, 2006
PhDIn this thesis we study the dynamics of cosmological scenarios inspired by quantum gravity. Part I investigates novel features of the semi-classical regime of homogeneous and isotropic loop quantum cosmology.
Mulryne, David James
core   +4 more sources

Effective f(R) Actions for Modified Loop Quantum Cosmologies via Order Reduction

open access: yesUniverse, 2023
General Relativity is an extremely successful theory, at least for weak gravitational fields; however, it breaks down at very high energies, such as in correspondence to the initial singularity.
Ana Rita Ribeiro   +2 more
doaj   +1 more source

Speckle Skin‐Based Multimodal Tactile Perception for Fine Robotic Manipulation

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 7, July 2026.
SpeckleTac, a miniature vision‐based tactile sensor, utilizes a speckle‐pattern skin and optical flow‐based scalable virtual marker tracking. Combined with advanced algorithms, it achieves high‐resolution 3D surface reconstruction, precise contact perception, and stable grasping capabilities.
Jiayuan Zhang   +6 more
wiley   +1 more source

Black holes and covariance in effective quantum gravity

open access: yesPhysical Review D
The longstanding issue of general covariance in effective models of quantum gravity is addressed, which arises when canonical quantum gravity leads to a semiclassical model described by an effective Hamiltonian constraint. In the context of spherically symmetric models, general covariance is precisely formulated into a set of equations, leading to the ...
Cong Zhang   +3 more
openaire   +2 more sources

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