Ontology-based representation and generation of workflows for micro-task human-machine computation

Doctoral Program in Computer Science

Task clustering on ETL systems – A pattern-oriented approach

Usually, data warehousing populating processes are data-oriented workflows composed by dozens of granular tasks that are responsible for the integration of data coming from different data sources. Specific subset of these tasks can be grouped on a collection together with their relationships in order to form higher- level constructs. Increasing task granularity allows for the generalization of processes, simplifying their views and providing methods to carry out expertise to new applications. Well-proven practices can be used to describe general solutions that use basic skeletons configured and instantiated according to a set of specific integration requirements. Patterns can be applied to ETL processes aiming to simplify not only a possible conceptual representation but also to reduce the gap that often exists between two design perspectives. In this paper, we demonstrate the feasibility and effectiveness of an ETL pattern-based approach using task clustering, analyzing a real world ETL scenario through the definitions of two commonly used clusters of tasks: a data lookup cluster and a data conciliation and integration cluster.

Pharmaceutical regulation and pseudo - generics

Dissertação de mestrado em Economia Industrial e da Empresa

A utilização de materiais didáticos diversificados como estratégia de motivação

Relatório de estágio de mestrado em Ensino da Filosofia no Ensino Secundário

Zeolite-based nanomaterials for the control of opportunistic pathogenic microorganisms

Dissertação de mestrado em Applied Biochemistry (área de especialização em Biomedicine)

Fetal behavior and heart rate in twin pregnancy: a review

Fetal movements and fetal heart rate (FHR) are well-established markers of fetal well-being and maturation of the fetal central nervous system. The purpose of this paper is to review and discuss the available knowledge on fetal movements and heart rate patterns in twin pregnancies. There is some evidence for an association or similarity in fetal movement incidences or FHR patterns between both members of twin pairs. However, the temporal occurrence of these patterns seems to be for the most part asynchronous, especially when stricter criteria are used to define synchrony. The available data suggest that fetal behavior is largely independent of sex combination, fetal position, and presentation. Conversely, chorionicity appears to have some influence on fetal behavior, mainly before 30 weeks of gestation. There is preliminary evidence for the continuity of inter-individual differences in fetal activity and FHR patterns over pregnancy. Comparisons between studies are limited by large methodological differences and absence of uniform concepts and definitions. Future studies with high methodological quality are needed to provide a more comprehensive knowledge of normal fetal behavior in twin pregnancy.

Maus tratos e negligência à criança: ressituação de uma problemática

Este artigo é dedicado ao enquadramento histórico e conceptual do estudo dos maus tratos e negligência à criança. Diversas situações de maus tratos e negligência à criança são avaliadas e descritas, ao longo da história e na actualidade. Faz-se igualmente uma reflexão a propósito da definição de meus tratos, bem como da definição dos diferentes tipos de maus tratos sucessivamente considerados: maus tratos físicos, abuso sexual, negligência, maus tratos psicológicos e/ou emocionais.

Do kemalismo ao neo-otomanismo: o desenvolvimento político e a «Nova Turquia» de Recep Tayyip Erdogan (2003-2014)

Dissertação de mestrado em Ciência Política