Results 31 to 40 of about 237,500 (306)

Scalar Field Cosmology from a Modified Poisson Algebra

open access: yesMathematics, 2022
We investigate the phase space of a scalar field theory obtained by minisuperspace deformation. We consider quintessence or phantom scalar fields in the action that arises from minisuperspace deformation on the Einstein–Hilbert action.
Genly Leon   +2 more
doaj   +1 more source

Learning the semantics of object–action relations by observation [PDF]

open access: greenThe International Journal of Robotics Research, 2011
Recognizing manipulations performed by a human and the transfer and execution of this by a robot is a difficult problem. We address this in the current study by introducing a novel representation of the relations between objects at decisive time points during a manipulation.
Eren Erdal Aksoy   +5 more
openalex   +7 more sources

On the semantics of durational actions

open access: yesTheoretical Computer Science, 2001
AbstractThis paper develops a mathematical framework to describe and reason about semantic theories of processes where actions have a non-zero duration. The framework relies on the notions of reduction and observability and allows one to naturally explain the possible choices to incorporate timing information in terms of process interaction mechanisms.
F. CORRADINI   +2 more
openaire   +5 more sources

HiTIM: Hierarchical Task Information Mining for Few-Shot Action Recognition

open access: yesApplied Sciences, 2023
Although the existing few-shot action recognition methods have achieved impressive results, they suffer from two major shortcomings. (a) During feature extraction, few-shot tasks are not distinguished and task-irrelevant features are obtained, resulting ...
Li Jiang   +4 more
doaj   +1 more source

A Variational Approach to Resistive General Relativistic Two-Temperature Plasmas

open access: yesUniverse, 2023
We develop an action principle to construct the field equations for dissipative/resistive general relativistic two-temperature plasmas, including a neutrally charged component.
Gregory Lee Comer   +3 more
doaj   +1 more source

General Relativity with a Positive Cosmological Constant Λ as a Gauge Theory

open access: yesAxioms, 2019
In this paper, we show that the general relativity action (and Lagrangian) in recent Einstein⁻Palatini formulation is equivalent in four dimensions to the action (and Langrangian) of a gauge field.
Marta Dudek, Janusz Garecki
doaj   +1 more source

Semantic Activation in Badminton Action Processing and Its Modulation by Action Duration: An ERP Study

open access: yesBrain Sciences, 2022
Action processing is crucial for sports activities. Using event-related potentials (ERPs), the present study investigated whether semantics were activated in action processing and, if so, whether semantic activation was modulated by action duration ...
Ruohan Chang   +2 more
doaj   +1 more source

Deverbal semantics and the Montagovian generative lexicon [PDF]

open access: yes, 2014
We propose a lexical account of action nominals, in particular of deverbal nominalisations, whose meaning is related to the event expressed by their base verb.
Real-Coelho, Livy-Maria   +1 more
core   +3 more sources

Context effects in embodied lexical-semantic processing

open access: yesFrontiers in Psychology, 2010
The embodied view of language comprehension proposes that the meaning of words is grounded in perception and action rather than represented in abstract amodal symbols.
Wessel O Van Dam   +3 more
doaj   +1 more source

Hydrogen-, Helium-, and Lithium-like Bound States in Classical and Quantum Plasmas

open access: yesPlasma, 2022
We study the effective interactions and the mass action constants for pair and triple associations in classical and quantum plasmas. Avoiding double counting, we derive new expressions for the mass action constants.
Werner Ebeling, Gerd Röpke
doaj   +1 more source

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