16,849 research outputs found
Credit allocation based on journal impact factor and coauthorship contribution
Some research institutions demand researchers to distribute the incomes they
earn from publishing papers to their researchers and/or co-authors. In this
study, we deal with the Impact Factor-based ranking journal as a criteria for
the correct distribution of these incomes. We also include the Authorship
Credit factor for distribution of the incomes among authors, using the
geometric progression of Cantor's theory and the Harmonic Credit Index.
Depending on the ranking of the journal, the proposed model develops a proper
publication credit allocation among all authors. Moreover, our tool can be
deployed in the evaluation of an institution for a funding program, as well as
calculating the amounts necessary to incentivize research among personnel.Comment: 9 pages; 3 figures; 2 table
A general interior anisotropic solution for a BTZ vacuum in the context of the Minimal Geometric Deformation decoupling approach
In this work we implement the Minimal Geometric Deformation decoupling method
to obtain general static interior solutions for a BTZ vacuum from the most
general isotropic solution in dimensions including the cosmological
constant . We obtain that the general solution can be generated only
by the energy density of the original isotropic sector, so that this quantity
plays the role of a generating function. Although as a particular example we
study the static star with constant density, the method here developed can be
easily applied to more complex situations described by other energy density
profiles.Comment: Accepted in EPJC. References correcte
orbital stability of Dirac solitons in the massive Thirring model
We prove orbital stability of Dirac solitons in the massive Thirring
model. Our analysis uses local well posedness of the massive Thirring model in
, conservation of the charge functional, and the auto--B\"{a}cklund
transformation. The latter transformation exists because the massive Thirring
model is integrable via the inverse scattering transform method
Cosmic web alignments with the shape, angular momentum and peculiar velocities of dark matter haloes
We study the alignment of dark matter haloes with the cosmic web
characterized by the tidal and velocity shear fields. We focus on the alignment
of their shape, angular momentum and peculiar velocities. We use a cosmological
N-body simulation that allows to study dark matter halos spanning almost five
orders of magnitude in mass (-) and
spatial scales of - Mpc to define the cosmic web. We find
that the halo shape presents the strongest alignment along the smallest tidal
eigenvector, e.g. along filaments and walls, with a signal that gets stronger
as the halo mass increases. In the case of the velocity shear field only
massive halos tend to have their shapes aligned
along the largest tidal eigenvector; that is, perpendicular to filaments and
walls. For the angular momentum we find alignment signals only for halos more
massive than both in the tidal and velocity shear
webs where the preferences are for it to be parallel to the middle eigenvector;
perpendicular to filaments and parallel to walls. Finally, the peculiar
velocities show a strong alignment along the smallest tidal eigenvector for all
halo masses; halos move along filaments and walls. In the velocity shear the
same alignment is present but weaker and only for haloes less massive than
. Our results clearly show that the two different
algorithms we used to define the cosmic web describe different physical aspects
of non-linear collapse and should be used in a complementary way to understand
the effect of the cosmic web on galaxy evolution.Comment: 14 pages, 5 figures, MNRAS accepte
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