Results 21 to 30 of about 3,806,530 (289)

Einstein Gravity as an emergent phenomenon? [PDF]

open access: yes, 2001
In this essay we marshal evidence suggesting that Einstein gravity may be an emergent phenomenon, one that is not ``fundamental'' but rather is an almost automatic low-energy long-distance consequence of a wide class of theories.
CARLOS BARCELÓ   +3 more
core   +3 more sources

Effective long-distance pollen dispersal in Centaurea jacea. [PDF]

open access: yesPLoS ONE, 2009
Agri-environment schemes play an increasingly important role for the conservation of rare plants in intensively managed agricultural landscapes. However, little is known about their effects on gene flow via pollen dispersal between populations of these ...
Matthias Albrecht   +4 more
doaj   +1 more source

Distance-Entropy: An Effective Indicator for Selecting Informative Data

open access: yesFrontiers in Plant Science, 2022
Smart agriculture is inseparable from data gathering, analysis, and utilization. A high-quality data improves the efficiency of intelligent algorithms and helps reduce the costs of data collection and transmission.
Yang Li, Yang Li, Xuewei Chao
doaj   +1 more source

Short-distance expansion of correlation functions in the charge-symmetric two-dimensional two-component plasma: Exact results [PDF]

open access: yes, 2005
We determine exactly the short-distance leading behavior of the density correlation functions of a two-dimensional two-component charge-symmetric Coulomb gas composed of point particles, in the whole regime of stability where the coulombic coupling ...
Tellez, Gabriel
core   +1 more source

Positive experience and further prospects for online education

open access: yesВестник Самарского университета: История, педагогика, филология, 2023
The article focuses on the positive aspects of online education and discusses the lessons learned and effective practices that can be brought back into conventional face-to-face classes.
Ye. V. Luganskaya, A. Yu. Suslova
doaj   +1 more source

Counting distance: Effects of egocentric distance on numerical perception

open access: yesPLOS ONE, 2017
Numerical value is long known to be associated with a variety of magnitude representations, such as size, time and space. The present study focused on the interactive relations of numerical magnitude with a spatial factor which is dominant in everyday vision and is often overlooked, namely, egocentric distance, or depth.
Nurit Gronau   +3 more
openaire   +4 more sources

Redshift Weights for Baryon Acoustic Oscillations : Application to Mock Galaxy Catalogs [PDF]

open access: yes, 2016
Large redshift surveys capable of measuring the Baryon Acoustic Oscillation (BAO) signal have proven to be an effective way of measuring the distance-redshift relation in cosmology. Building off the work in Zhu et al.
Padmanabhan, Nikhil   +4 more
core   +2 more sources

Identifying Influential Nodes in Complex Networks Based on Local Effective Distance

open access: yesInformation, 2019
With the rapid development of Internet technology, the social network has gradually become an indispensable platform for users to release information, obtain information, and share information.
Junkai Zhang   +5 more
doaj   +1 more source

Effective Physical Education Distance Learning Models during the Covid-19 Epidemic

open access: yesCenter for Educational Policy Studies Journal, 2021
The Covid-19 epidemic has had a strong impact on the implementation of the entire educational process due to the closure of public life and schools. Physical education (PE) teachers were faced with the challenge of conveying at a distance the learning ...
Tanja Petrušič , Vesna Štemberger
doaj   +1 more source

Exaggerated Death of Distance: Revisiting Distance Effects on Regional Price Dispersions [PDF]

open access: yesSSRN Electronic Journal, 2010
Past studies in the literature of the law of one price (LOP) show statistically significant but economically subtle roles of geographical distance in regional price dispersions. In this paper, we challenge this empirical “death of distance” as a primary source of LOP violations investigating a unique daily data set of wholesale prices of agricultural ...
Kazuko Kano   +2 more
openaire   +5 more sources

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