2,672 research outputs found
A Relation-Based Page Rank Algorithm for Semantic Web Search Engines
No full textWith the tremendous growth of information available to end users through the Web, search engines come to play ever a more critical role. Nevertheless, because of their general-purpose approach, it is always less uncommon that obtained result sets provide a burden of useless pages. The next-generation Web architecture, represented by the Semantic Web, provides the layered architecture possibly allowing overcoming this limitation. Several search engines have been proposed, which allow increasing information retrieval accuracy by exploiting a key content of Semantic Web resources, that is, relations. However, in order to rank results, most of the existing solutions need to work on the whole annotated knowledge base. In this paper, we propose a relation-based page rank algorithm to be used in conjunction with Semantic Web search engines that simply relies on information that could be extracted from user queries and on annotated resources. Relevance is measured as the probability that a retrieved resource actually contains those relations whose existence was assumed by the user at the time of query definitio
LO-MATCH: A semantic platform for matching migrants' competences with labour market's needs
No full textCitizens' mobility and employability are receiving ever more attention by the European legislation. Various instruments have been defined to overcome lexical and semantic differences in the descriptions of qualifications, résumés and job profiles. However, the above differences still represent a significant constraint when abilities of non-European people have to be validated either for education and training or occupation purposes. In this work, a web platform that exploits semantic technologies to address such heterogeneity issues is presented. The platform allows migrants to annotate their knowledge, skills and competences in a shared format based on the European tools. The resulting knowledge base is then used to enable the automatic matchmaking of job seekers' abilities with companies' needs. The platform can additionally be used to support students and workers in the identification of their competence gap with respect to a given education or occupation opportunity, so that to personalize their further trainin
“Europe Year Zero: from Gated memories to Intercultural Reconciliation”
No full textA conference promoted by the Istituto Italiano di Cultura, Toronto, in collaboration with: the European Union Centre of Excellence (EUCE) at the Centre for European, Russian and Eurasian Studies, university of Toronto; the University of Bologna; the Canadian Centre for German and European Studies at York Univesity, and with the supporto of EUNIC in Canada.
The themes of memory studies and the problem of identity were addressed by invited speakers: Prof. Julia Creet, Prof. Shelley Hornstein; Prof. Andreas Ktzmann, Dr Elena Lamberti, Prof Claudio Magris.
in a time of global migrations after 20th century wars, how does cultural memory strenghten or undermine social and political coehesion. The points of departure for this discussion were two books: "Memories and Reprsentations of War: The Case of World War I and World War II" ( E. Lamberti, V. Fortunati, eds, New York/Aserdam, Rodopoi 2009) and "Memory and Migration - Mutidisciplinary Approaches to Memory Studies" /J Creet, A. Kitmann eds, Toronto, University of toronto Press, 2010). Both collections of essays explore the complex cultural identity/ies of the peoples of Canada and the European Union member states and the bonds between the two political entities thrugh individual, institutional and artistic expressions of cultural memory
Exploiting semantics for constructing and comparing occupational and educational-driven qualifications: the TIPTOE project
No full textIn recent years, mobility of students and workers started to be considered as a way for answering skill shortages in the European labor world. However, in order to implement effective mobility practices, suitable instruments supporting transparency and readability of the outcomes of learning processes as well as of the needs of companies and employers in general have to be developed. In fact, though some instruments have been introduced (like, for instance, the European Qualification Framework, EQF, the European Credit system for Vocational Education and Training, ECVET, etc.), they are often seen as theoretical tools rather than a practical help for involved stakeholders. In this work, the results of the TIPTOE project, a transnational initiative funded by the European Commission under the Lifelong Learning Programme are illustrated. In particular, the semantic-based methodology for the construction of a European-wide profile mixing education and labor worlds perspectives in the trade sector is discussed. Furthermore, a number of tools allowing end-users to compare owned qualifications to the reference one and supporting stakeholders in the reading of national educational and occupational profiles in the EQF dimension are presente
PROPOSTA DI UNA METODOLOGIA DI VALUTAZIONE COMPARATIVA PER PRODOTTI ECOCOMPATIBILI
No full textLa ricerca si è posto come obiettivo la determinazione di un criterio di valutazione comparativa per prodotti edilizi appartenenti ad una medesima famiglia che non si limitasse alla considerazione della sola “ecocompatibilità” ma che anzi, avendo questa come premessa indispensabile, ampliasse il suo campo d’azione fino ad approfondire gli aspetti più prettamente tecnici del problema afferente a tre diverse aree di riferimento: tecnologica, ambientale, economica
Mixed marker-based/marker-less visual odometry system for mobile robots
No full textWhen moving in generic indoor environments, robotic platforms generally rely solely on information provided by onboard sensors to determine their position and orientation. However, the lack of absolute references often leads to the introduction of severe drifts in estimates computed, making autonomous operations really hard to accomplish. This paper proposes a solution to alleviate the impact of the above issues by combining two vision‐based pose estimation techniques working on relative and absolute coordinate systems, respectively. In particular, the unknown ground features in the images that are captured by the vertical camera of a mobile platform are processed by a vision‐based odometry algorithm, which is capable of estimating the relative frame‐to‐frame movements. Then, errors accumulated in the above step are corrected using artificial markers displaced at known positions in the environment. The markers are framed from time to time, which allows the robot to maintain the drifts bounded by additionally providing it with the navigation commands needed for autonomous flight. Accuracy and robustness of the designed technique are demonstrated using an off‐the‐shelf quadrotor via extensive experimental test
Low-cost home monitoring using a Java-based embedded computer
No full textIn this paper the design and development of a low-cost homecare architecture for remote patient telemetry built upon a Java-based embedded computer is presented. The proposed architecture has been validated by experiencing real-time ECG monitoring by means of desktop PCs equipped with Web browsers, Personal Digital Assistants and WAP-enabled GSM/GPRS mobile phones. The modular approach followed in the development of the home station allows additional medical devices to be easily integrated to fulfil the requirements of heterogeneous homecare scenarios. We expect that the availability of such a low-cost telemedicine device will contribute to further extend healthcare reach to the homecare environment
Integrating European Qualification Systems with OWL Ontologies
No full textThe present work describes the work carried out in the EU LdV HELeN Projec regarding the use of web ontologies as a way to tackle the qualification systems? integration for enabling transparency and mobility of students at European level. Qualification systems at post-secondary non-academic level of nine EU countries have been formalized in terms of profile, activities, competences, learning outcomes, etc. first using UML for a human-readable model and then using OWL for a machine-processable one. In addition, concrete qualification profiles have been used as study case to validate the ontology correctnes
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