14,001 research outputs found
The Sustainability, Preservation and Accessibility of Internal and External Communities by Universities
4th International Conference on Open RepositoriesThis presentation was part of the session : DSpace User Group PresentationsDate: 2009-05-20 03:30 PM – 05:00 PMThis paper will provide three different cases or examples of how a mid-size University is able to implement DSpace across diverse groups of users. Additionally, one of the cases will show how the DSpace software has been 'repurposed' to serve as the university library's Electronic Reserve and how it has been linked the library's ILS. The paper will show how the university has obtained a consistent level of sustainability, preservation and accessibility to using DSpace with limited resources
Density profiles of Ar adsorbed in slits of CO_2: spontaneous symmetry breaking
A recently reported symmetry breaking of density profiles of fluid argon
confined by two parallel solid walls of carbon dioxide is studied. The
calculations are performed in the framework of a nonlocal density functional
theory. It is shown that the existence of such asymmetrical solutions is
restricted to a special choice for the adsorption potential, where the
attraction of the solid-fluid interaction is reduced by the introduction of a
hard-wall repulsion. The behavior as a function of the slit's width is also
discussed. All the results are placed in the context of the current knowledge
on this matter.Comment: Text plus 8 figure
The weights of closed subgroups of a locally compact group
Let be an infinite locally compact group and a cardinal
satisfying for the weight of . It is
shown that there is a closed subgroup of with . Sample
consequences are:
(1) Every infinite compact group contains an infinite closed metric subgroup.
(2) For a locally compact group and a cardinal satisfying
\aleph_0\le\aleph\le \lw(G), where \lw(G) is the local weight of , there
are either no infinite compact subgroups at all or there is a compact subgroup
of with .
(3) For an infinite abelian group there exists a properly ascending
family of locally quasiconvex group topologies on , say,
(\tau_\aleph)_{\aleph_0\le \aleph\le \card(G)}, such that
.
Items (2) and (3) are shown in Section 5
struc2vec: Learning Node Representations from Structural Identity
Structural identity is a concept of symmetry in which network nodes are
identified according to the network structure and their relationship to other
nodes. Structural identity has been studied in theory and practice over the
past decades, but only recently has it been addressed with representational
learning techniques. This work presents struc2vec, a novel and flexible
framework for learning latent representations for the structural identity of
nodes. struc2vec uses a hierarchy to measure node similarity at different
scales, and constructs a multilayer graph to encode structural similarities and
generate structural context for nodes. Numerical experiments indicate that
state-of-the-art techniques for learning node representations fail in capturing
stronger notions of structural identity, while struc2vec exhibits much superior
performance in this task, as it overcomes limitations of prior approaches. As a
consequence, numerical experiments indicate that struc2vec improves performance
on classification tasks that depend more on structural identity.Comment: 10 pages, KDD2017, Research Trac
Nonmeasurable subgroups of compact groups
In 1985 S.~Saeki and K.~Stromberg published the following question: {\it Does
every infinite compact group have a subgroup which is not Haar measurable?} An
affirmative answer is given for all compact groups with the exception of some
metric profinite groups known as strongly complete. In this spirit it is also
shown that every compact group contains a non-Borel subgroup
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