An Access Control Model for Protecting Provenance Graphs

Postprint

TravelBot: Journey Disruption Alerts Utilising Social Media and Linked Data

Postprint

A link density clustering algorithm based on automatically selecting density peaks for overlapping community detection

Peer reviewed

Economic Impacts of Rules-based vs Risk-based Cybersecurity Regulations in Critical Infrastructure Providers (Bulk Electricity Providers)

Economics of Cybersecurity Part 2. SPSI-2015-01-0024.

An alternative pathway for rod signals in the rodent retina: Rod photoreceptors, cone bipolar cells, and the localization of glutamate receptors

In the mammalian retina, extensive processing of spatiotemporal and chromatic information occurs. One key principle in signal transfer through the retina is parallel processing. Two of these parallel pathways are the ON- and OFF-channels transmitting light and dark signals. This dual system is created in the outer plexiform layer, the first relay station in retinal signal transfer. Photoreceptors release glutamate onto ON- and OFF-type bipolar cells, which are functionally distinguished by their postsynaptic expression of different types of glutamate receptors, namely ionotropic and metabotropic glutamate receptors. In the current concept, rod photoreceptors connect only to rod bipolar cells (ON-type) and cone photoreceptors connect only to cone bipolar cells (ON- and OFF-type). We have studied the distribution of (RS)-α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) glutamate receptor subunits at the synapses in the outer plexiform layer of the rodent retina by immunoelectron microscopy and serial section reconstruction. We report a non-classical synaptic contact and an alternative pathway for rod signals in the retina. Rod photoreceptors made synaptic contact with putative OFF-cone bipolar cells that expressed the AMPA glutamate receptor subunits GluR1 and GluR2 on their dendrites. Thus, in the retina of mouse and rat, an alternative pathway for rod signals exists, where rod photoreceptors bypass the rod bipolar cell and directly excite OFF-cone bipolar cells through an ionotropic sign-conserving AMPA glutamate receptor.

Argumentation schemes for policy-driven planning

Postprint

Argumentation strategies for plan resourcing

Postprint

Towards the Design of a Textile Chemical Ontology

The main goal of this paper is to present the initial version of a Textile Chemical Ontology, to be used by textile professionals with the purpose of conceptualising and representing the banned and harmful chemical substances that are forbidden in this domain. After analysing different methodologies and determining that “Methontology” is the most appropriate for the purposes, this methodology is explored and applied to the domain. In this manner, an initial set of concepts are defined, together with their hierarchy and the relationships between them. This paper shows the benefits of using the ontology through a real use case in the context of Information Retrieval. The potentiality of the proposed ontology in this preliminary evaluation encourages extending the ontology with a higher number of concepts and relationships, and validating it within other Natural Language Processing applications.

Exploring the use of cooperative activities in a language subject to develop students’ social competences at the University

Cooperative learning has been successfully implemented in the last 60 years for teaching at different educational levels including the Higher Studies due to its solid theoretical foundation, the principles it proposes and its practical applications. The purpose of this article is to offer a proposal for some cooperative activities that allow students to work in small groups in a language subject in order to learn not only contents but also putting into practice what they learn, i.e., they learn by being active. This article discusses how the said activities make it possible for students to work with the main principles of cooperative learning, i.e.: positive interdependence, face-to-face interaction, individual and group accountability, interpersonal and small-group skills and group processing. Moreover, this research will also point out that the proposed activities allow students to acquire some of the social competences required in the labour market such as leadership, conflict solving and cooperation.

Optimized CUDA-Based PDE Solver for Reaction Diffusion Systems on Arbitrary Surfaces

Partial differential equation (PDE) solvers are commonly employed to study and characterize the parameter space for reaction-diffusion (RD) systems while investigating biological pattern formation. Increasingly, biologists wish to perform such studies with arbitrary surfaces representing ‘real’ 3D geometries for better insights. In this paper, we present a highly optimized CUDA-based solver for RD equations on triangulated meshes in 3D. We demonstrate our solver using a chemotactic model that can be used to study snakeskin pigmentation, for example. We employ a finite element based approach to perform explicit Euler time integrations. We compare our approach to a naive GPU implementation and provide an in-depth performance analysis, demonstrating the significant speedup afforded by our optimizations. The optimization strategies that we exploit could be generalized to other mesh based processing applications with PDE simulations.

Caracterización del archivo de investigación : Un estudio de caso

El objetivo del artículo es describir los procesos administrativos del área de investigación en la Escuela Interamericana de Bibliotecología de la Universidad de Antioquia (Medellín-Colombia) en relación al archivo documental en sus diferentes niveles y tipologías. Para ello se realizó, en primer lugar, una identificación de la experiencia en investigación de la Escuela y, en segundo, una caracterización de los procesos de tratamiento archivístico del archivo de investigación, con el fin de proponer planteamientos conceptuales y metodológicos sobre este tipo de archivos. Por último, se plantean algunas recomendaciones y consideraciones finales sobre el archivo de investigación como un tipo especializado, de singular valor para la gestión y apropiación social del conocimiento científico y/o tecnológico.

Caracterización del archivo de investigación : Un estudio de caso

El objetivo del artículo es describir los procesos administrativos del área de investigación en la Escuela Interamericana de Bibliotecología de la Universidad de Antioquia (Medellín-Colombia) en relación al archivo documental en sus diferentes niveles y tipologías. Para ello se realizó, en primer lugar, una identificación de la experiencia en investigación de la Escuela y, en segundo, una caracterización de los procesos de tratamiento archivístico del archivo de investigación, con el fin de proponer planteamientos conceptuales y metodológicos sobre este tipo de archivos. Por último, se plantean algunas recomendaciones y consideraciones finales sobre el archivo de investigación como un tipo especializado, de singular valor para la gestión y apropiación social del conocimiento científico y/o tecnológico.

UNIMATCH : a record linkage system : users manual /

Mode of access: Internet.

An experiment on a unified control construct /

Bibliography: p. 34.

Automatic cell generation for recurrence structures /

"NSF-OCA-MCS76-81686-000052."--Cover.