Results 61 to 70 of about 2,544,042 (295)

Microlensing path parametrization for Earth-like Exoplanet detection around solar mass stars

open access: yes, 2018
We propose a new parametrization of the impact parameter u0 and impact angle {\alpha} for microlensing systems composed by an Earth-like Exoplanet around a Solar mass Star at 1 AU.
de Almeida, L., Nascimento Jr, J. -D. do
core   +2 more sources

Non-parametric policy search with limited information loss [PDF]

open access: yes, 2017
Learning complex control policies from non-linear and redundant sensory input is an important challenge for reinforcement learning algorithms. Non-parametric methods that approximate values functions or transition models can address this problem, by adapting to the complexity of the data set. Yet, many current non-parametric approaches rely on unstable
Herke van Hoof   +2 more
openaire   +5 more sources

Search of scaling solutions in scalar–tensor gravity [PDF]

open access: yes, 2015
We write new functional renormalization group equations for a scalar nonminimally coupled to gravity. Thanks to the choice of the parametrization and of the gauge fixing they are simpler than older equations and avoid some of the difficulties that were ...
R. Percacci, G. Vacca
semanticscholar   +1 more source

Investigating the Structural Factors Influencing the Magnetic Interaction between Individual Copper Spins in the CuCu4 Metallacrown Complex, from Its Bulk Form to Its Adsorption on Au(111)

open access: yesAdvanced Materials Interfaces, EarlyView.
The Cu(II)[12‐MCCu(II)N(Shi)‐4] metallacrown complex (CuCu4) is studied to examine how geometric transformations affect magnetic coupling between copper spins by using ultraviolet photoemission spectroscopy and DFT calculations for the bulk phase and CuCu4 adsorbed on Au(111). While adsorption minimally affects tDOS, exchange coupling constants between
Ariyan Tavakoli   +11 more
wiley   +1 more source

A Parametric Framework for Cooperative Parallel Local Search [PDF]

open access: yes, 2014
In this paper we address the problem of parallelizing local search. We propose a general framework where different local search engines cooperate (through communication) in the quest for a solution. Several parameters allow the user to instantiate and customize the framework, like the degree of intensification and diversification.
Munera, Danny   +3 more
openaire   +3 more sources

Information Transmission Strategies for Self‐Organized Robotic Aggregation

open access: yesAdvanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng   +5 more
wiley   +1 more source

Leaf of leaf foliation and Beltrami parametrization in d > 2 dimensional gravity

open access: yesNuclear Physics B
This work establishes the existence of a covariant “Beltrami vielbein” in dimensions d>2, generalizing the well-known d=2 case. The definition of this vielbein is motivated by a sub-foliation structure of the Arnowitt–Deser–Misner (ADM) slices of a d ...
Laurent Baulieu
doaj   +1 more source

Spatial index relating urban environment to health lifestyle and obesity risk in men and women from different age groups.

open access: yesPLoS ONE, 2020
The challenge in the search for relationships between urban space, physical mobility, and health status, is detecting indicators able to link the environment with healthy life habits.
David Michel Oliveira   +6 more
doaj   +1 more source

Understanding Eye Movements: Psychophysics and a Model of Primary Visual Cortex

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2020
Humans move their eyes in order to learn visual representations of the world. These eye movements depend on distinct factors, either by the scene that we perceive or by our own decisions.
David Berga
doaj   +1 more source

Reconstructing a String-Inspired Non-minimally Coupled Quintom Model

open access: yes, 2008
Motivated by the recent work of Zhang and Chen \cite{bin}, we generalize their work to the non-minimally coupled case. We consider a quintom model of dark energy with a single scalar field $T$ given by a Lagrangian which inspired by tachyonic Lagrangian ...
A. R. AMANI   +11 more
core   +2 more sources

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