38 research outputs found

    Framework for automatic generation of ontology mappings

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    Some of the most outstanding problems in Computer Science (e.g. access to heterogeneous information sources, use of different e-commerce standards, ontology translation, etc.) are often approached through the identification of ontology mappings. A manual mapping generation slows down, or even makes unfeasible, the solution of particular cases of the aforementioned problems via ontology mappings. Some algorithms and formal models for partial tasks of automatic generation of mappings have been proposed. However, an integrated framework to solve this problem is still missing. In this paper, we present a framework for automatic ontology mapping generation, and a partial implementation of it. Our proposal is that this integrated vision can guide, not only our future work, but also the future work of other researchers. In the implementation carried out, we have built a mapping ontology with knowledge on ontology mappings

    Marine mammals and Good Environmental Status: Science, Policy and Society; Challenges and Opportunities

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    The Marine Strategy Framework Directive has become the key instrument for marine conservation in European seas. We review its implementation, focusing on cetacean biodiversity, using the examples of Spain and the Regional Seas Convention, OSPAR. The MSFD has been widely criticised for legal vagueness, lack of coordination, uncertainty about funding, and poor governance; its future role within EU Integrated Maritime Policy remains unclear. Nevertheless, the first stages of the process have run broadly to schedule: current status, environmental objectives and indicators have been described and the design of monitoring programmes is in progress, drawing on experience with other environmental legislation. The MSFD is now entering its critical phase, with lack of funding for monitoring, limited scope for management interventions, and uncertainty about how conservation objectives will be reconciled with the needs of other marine and maritime sectors, being among the main concerns. Clarity in governance, about the roles of the EU, Member States, Regional Seas Conventions and stakeholders, is needed to ensure success. However, even if (as seems likely) good environmental status cannot be achieved by 2020, significant steps will have been taken to place environmental sustainability centre-stage in the development of Integrated Maritime Policy for EU seas.Postprin

    Meanings given to algebraic symbolism in problem posing

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    Some errors in the learning of algebra suggest students have difficulties giving meaning to algebraic symbolism. In this paper, we use problem posing in order to analyze the students’ capacity to assign meaning to algebraic symbolism and the difficulties that students encounter in this process depending on the characteristics of the algebraic statements given. We designed a written questionnaire composed of eight closed algebraic statements expressed symbolically, which was administered to 55 students who had finished their compulsory education and that had some previous experience in problem posing. In our analysis of the data, we examine both syntactic and semantic structures of the problem posed. We note that in most cases students posed problems with syntactic structures different to those given. They did not include computations within variables, and changed the kinds of relationships connecting variables. Students easily posed problems for statements with additive structures. Other differences in the type of problems posed depend on the characteristics of the given statements

    The first cetacean sightings network in Spain: results of a co-operation within the Spanish Cetacean Society

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    3 pages, 2 tables.-- Fifteenth Annual Conference of the European Cetacean Society, Rome, Italy, 6-10 May 200ln 1999, the Spanish Cetacean Society (SEC) was created in order to co-ordinate the activities of different organisations and research groups in Spain, and to provide assistance to regional and national authorities in issues related to the conservation of the marine environment. In July 1999, the Spanish Ministry for the Environment appointed to the SEC the custody of a national database of shandings and sightings of cetaceans in order to standardise the methodology used by all groups involved in these activities, and to facilitate the exchange of information among researchers. The Sightings Working Group of the SEC has been, since then, developing and updating the cetacean sightings database with the participation of most research and conservation groups working in Spain. This is the fìrst time in Spain that most groups put together their information creating a National Sightings Network and giving a fairly complete vision of cetacean distribution throughout the whole country, showing the importance of co-ordinated co-operation in the context of conservationDGCN (National Environment Agency) of the Spanish Ministry for the EnvironmentN

    Exploring Health Science Students’ Notions on Organ Donation and Transplantation: A Multicenter Study

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    The knowledge acquired during university education about organ donation and transplantation (ODT) decisively influences the information future health professionals transmit. This is important in ODT where the participation of the general public is essential to obtain organs. Objective: To determine notions of Spanish medicine and nursing students on ODT and its relationship with attitude toward ODT. Methods and Design: and design. We conducted a sociologic, multicenter, and observational study. The population for our study consisted of medical and nursing students in Spanish universities. Our database was the Collaborative International Donor Project, stratified by geographic area and academic course. A validated questionnaire (PCID-DTO-RIOS) was self-administered and completed anonymously. Our sample consisted of 9598 medical and 10, 566 nursing students (99% confidence interval; precision of ±1%), stratified by geographic area and year of study. Results: The completion rate for our study was 90%. Only 20% (n=3640) of students thought their notions on ODT were good; 41% (n=7531) thought their notions were normal; 36% (n=6550) thought their notions were scarce. Comparing groups, there were differences between those who believed that their notions on ODT were good (44% nursing vs 56% medical students; P < .000), and those who believed it scarce (54% nursing vs 46% medical students; P < .000). Notions on ODT were related with attitude toward the donation of one''s own organs: those who considered their notions were good were more in favor then those who considered it scarce (88% vs 72%; P < .000). Conclusion: Only 20% of Spanish medical and nursing students thought their notions on ODT were good. Having good knowledge is related to a favorable attitude towards ODT. Receiving specific information on the subject could improve their knowledge about ODT during their training

    Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

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    The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

    Trastornos de la personalidad en fumadores y personas con dependencia de la cocaína que acuden a tratamiento : un estudio comparativo

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    The aim of this study was to assess and compare the presence of personality disorders in smokers and in subjects with cocaine dependence at the beginning of the treatment, with the use of the Spanish version of the Millon Clinical Multiaxial Inventory-II (MCMI-II; Millon, 1997). The sample was composed of 304 subjects, 102 of them in treatment for cocaine dependence, and 202 attending a smoking cessation treatment. The results show signifi cant differences between the two groups in all personality scales, except in the dependent and the histrionic scales. We found that cocaine-dependent patients obtain higher scores than smokers in the hypomania, alcohol abuse, drug abuse, psychotic, psychotic delusion, sincerity and alteration scales. We conclude that the personality profi le of cocaine-dependent patients is signifi cantly different from the smokers’ profile.El objetivo del presente estudio fue evaluar y comparar la presencia de trastornos de la personalidad en fumadores y personas con dependencia de la cocaína al inicio del tratamiento, utilizando para ello el Inventario Clínico Multiaxial de Millon-II (MCMI-II; Millon, 1997). La muestra estuvo formada por 304 sujetos, 102 en tratamiento por dependencia de la cocaína y 202 en tratamiento para dejar de fumar. Los resultados muestran diferencias signifi cativas entre los dos grupos en todas las escalas de personalidad, excepto en la dependiente y la histriónica. Se encontró que los dependientes de la cocaína puntúan más en hipomanía, abuso de alcohol, abuso de drogas, pensamiento psicótico y trastorno delirante, así como en la escala de sinceridad y alteración. Concluimos que el perfi l de personalidad de las personas dependientes de la cocaína que acuden a tratamiento es signifi cativamente distinto al de los fumadores.
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