New methods and technologies for enhancing usability and accessibility of educational data

Universal Access in the Information Society -     

Fitness based weighted flower pollination algorithm with mutation strategies for image enhancement

Multimedia Tools and Applications - Flower Pollination Algorithm (FPA) is a well-known swarm intelligence optimization algorithm, which has shown an effective performance by solving many...     

Feature definition and comprehensive analysis on the robust identification of intraretinal cystoid regions using optical coherence tomography images

Pattern Analysis and Applications - Currently, optical coherence tomography is one of the most used medical imaging modalities, offering cross-sectional representations of the studied tissues. This...     

MXene-containing composite electrodes for hydrogen evolution: Material design aspects and approaches for electrode fabrication

This work explores the possibilities for the processing of Ni- and Ti₃C₂T_x (T = OH, O) MXene-containing composite electrodes, by co-pressing and plastic deformation or by etching of the electrodes prepared directly by self-propagation high-temperature synthesis (SHS). Various material design approaches were also explored. In order to tune the Ti₃C₂ interlayer distance in Ti₃C₂Al MAX phase, an introduction of additional Al to form Ti₃C₂Al_z materials with z > 1 was attempted. Self-propagation high-temperature synthesis of powder mixtures with extra Ni and Al content (e.g. Ni:Ti:Al:C = 1:2:3:1) resulted in SHS products containing Ti₃C₂Al_z z > 1 material and Ni–Al alloys. Further etching of these products in 10M NaOH allowed the direct formation of electrodes with active surface containing Ti₃C₂T_x (T = OH, O) MXene- and Raney nickel-containing composites. The electrochemical studies were focused on hydrogen evolution and showed the potential for boosting the electrochemical reaction in Ni and MXene-containing composite electrodes, especially at high current densities. The guidelines for the processing of such electrodes under fluorine-free conditions are proposed and discussed.     

Towards a model for the detection and identification of failures in long haul mobile networks

Telecommunication Systems - This work proposes a model to detect and identify failures in Personal Communications Service mobile networks. Among the information available from the network equipment...     

Open access initiatives in European universities: analysis of their implementation and the visibility of publications in the YERUN network

Scientometrics - In this paper, the authors analyse the open access (OA) output of the universities in YERUN (the Young European Research Universities Network) and their institutional documentation...     

CHSPAM: a multi-domain model for sequential pattern discovery and monitoring in contexts histories

Pattern Analysis and Applications - Context-aware applications adapt their functionalities based on users contexts. Complementarily, a context history has information about previous contexts...     

A general formulation for the contact between superellipsoid surfaces and nodal points

Multibody System Dynamics - The superellipsoids, part of the family of superquadratics, have geometric and mathematical properties that not only make them suitable for the representation of solids,...