4,300 research outputs found
Female scholars need to achieve more for equal public recognition
Different kinds of "gender gap" have been reported in different walks of the
scientific life, almost always favouring male scientists over females. In this
work, for the first time, we present a large-scale empirical analysis to ask
whether female scientists with the same level of scientific accomplishment are
as likely as males to be recognised. We particularly focus on Wikipedia, the
open online encyclopedia that its open nature allows us to have a proxy of
community recognition. We calculate the probability of appearing on Wikipedia
as a scientist for both male and female scholars in three different fields. We
find that women in Physics, Economics and Philosophy are considerable less
likely than men to be recognised on Wikipedia across all levels of achievement.Comment: Under revie
Gravity theory in SAP-geometry
The aim of the present paper is to construct a field theory in the context of
absolute parallelism (Teleparallel) geometry under the assumption that the
canonical connection is semi-symmetric. The field equations are formulated
using a suitable Lagrangian first proposed by Mikhail and Wanas. The
mathematical and physical consequences arising from the obtained field
equations are investigated.Comment: 14 pages, References added and a reference updated, minor correction
On Finsler surfaces with certain flag curvatures
In the present paper, we find out necessary and sufficient conditions for a
Finsler surface to be Landsbregian in terms of the Berwald curvature
-forms. We study Finsler surfaces which satisfy some flag curvature
conditions, viz., and
where is the Cartan scalar. In order to
do so, we investigate some geometric objects associated with the global Berwald
distribution of a
-dimensional Finsler metrizable nonflat spray . We obtain some
classifications of such surfaces and show that under what hypothesis these
surfaces turn to be Riemannian. The existence of a first integral for the
geodesic flow in each case has some remarkable consequences concerning rigidity
results. We prove that a Finsler surface with and
either or is Riemannian. Further, a Finsler surface
with and is Riemannian.Comment: 10 page
First Principle Calculations for Silver Halides AgBr, AgCl, and AgF
Density functional theory (DFT) coupled with ) method are carried out to calculate the electronic structures of AgX (X; Br, Cl, and F). The effect of hybridizing between 4d orbital of Ag element and the p orbitals of the X in the valence band plays a very important role in the total density of states configuration. The electronic structure has been studied and all results were compared with the experimental and theoretical values. The importance of this work is that there is insufficient studies of silver halides corresponding the great importance of these compounds. Almost all the results were consistent with the previous studies mentioned here. We found the band gap of AgX to be 2.343 eV, 2.553 eV, and 1.677 eV for AgBr, AgCl, and AgF respectively which are in good agreement with the experimental results.
 
- β¦