Laboratório de criação a partir de Macbeth de William Shakespeare: relatório de estágio

Relatório de Estágio submetido à Escola Superior de Teatro e Cinema para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Teatro - especialização em Encenação.

A performatividade dos movimentos sociais contemporâneos: dissertação

Dissertação submetida à Escola Superior de Teatro e Cinema para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Teatro - especialização em Teatro e Comunidade.

Magnetic nanoparticles for biocatalysis and bioseparation

Dissertação para obtenção do Grau de Mestre em Biotecnologia

Development of a piezoelectric biosensor based on PVDF films

Dissertação para obtenção do Grau de Mestre em Engenharia Química e Bioquímica

Engineered MRI nanoprobes based on superparamagnetic iron oxide nanoparticles

This project aimed to engineer new T2 MRI contrast agents for cell labeling based on formulations containing monodisperse iron oxide magnetic nanoparticles (MNP) coated with natural and synthetic polymers. Monodisperse MNP capped with hydrophobic ligands were synthesized by a thermal decomposition method, and further stabilized in aqueous media with citric acid or meso-2,3-dimercaptosuccinic acid (DMSA) through a ligand exchange reaction. Hydrophilic MNP-DMSA, with optimal hydrodynamic size distribution, colloidal stability and magnetic properties, were used for further functionalization with different coating materials. A covalent coupling strategy was devised to bind the biopolymer gum Arabic (GA) onto MNPDMSA and produce an efficient contrast agent, which enhanced cellular uptake in human colorectal carcinoma cells (HCT116 cell line) compared to uncoated MNP-DMSA. A similar protocol was employed to coat MNP-DMSA with a novel biopolymer produced by a biotechnological process, the exopolysaccharide (EPS) Fucopol. Similar to MNP-DMSA-GA, MNP-DMSA-EPS improved cellular uptake in HCT116 cells compared to MNP-DMSA. However, MNP-DMSA-EPS were particularly efficient towards the neural stem/progenitor cell line ReNcell VM, for which a better iron dose-dependent MRI contrast enhancement was obtained at low iron concentrations and short incubation times. A combination of synthetic and biological coating materials was also explored in this project, to design a dynamic tumortargeting nanoprobe activated by the acidic pH of tumors. The pH-dependent affinity pair neutravidin/iminobiotin, was combined in a multilayer architecture with the synthetic polymers poy-L-lysine and poly(ethylene glycol) and yielded an efficient MRI nanoprobe with ability to distinguish cells cultured in acidic pH conditions form cells cultured in physiological pH conditions.

Hand gesture recognition system based in computer vision and machine learning

"Lecture notes in computational vision and biomechanics series, ISSN 2212-9391, vol. 19"

Vision-based portuguese sign language recognition system

Vision-based hand gesture recognition is an area of active current research in computer vision and machine learning. Being a natural way of human interaction, it is an area where many researchers are working on, with the goal of making human computer interaction (HCI) easier and natural, without the need for any extra devices. So, the primary goal of gesture recognition research is to create systems, which can identify specific human gestures and use them, for example, to convey information. For that, vision-based hand gesture interfaces require fast and extremely robust hand detection, and gesture recognition in real time. Hand gestures are a powerful human communication modality with lots of potential applications and in this context we have sign language recognition, the communication method of deaf people. Sign lan- guages are not standard and universal and the grammars differ from country to coun- try. In this paper, a real-time system able to interpret the Portuguese Sign Language is presented and described. Experiments showed that the system was able to reliably recognize the vowels in real-time, with an accuracy of 99.4% with one dataset of fea- tures and an accuracy of 99.6% with a second dataset of features. Although the im- plemented solution was only trained to recognize the vowels, it is easily extended to recognize the rest of the alphabet, being a solid foundation for the development of any vision-based sign language recognition user interface system.

Mapping numbers onto space in preschool children and adults

Tese de Doutoramento em Psicologia - Especialidade em Psicologia Experimental e Ciências Cognitivas

Hand gesture recognition system based in computer vision and machine learning: Applications on human-machine interaction

Tese de Doutoramento em Engenharia de Eletrónica e de Computadores

Automatically estimating iSAX parameters

The Symbolic Aggregate Approximation (iSAX) is widely used in time series data mining. Its popularity arises from the fact that it largely reduces time series size, it is symbolic, allows lower bounding and is space efficient. However, it requires setting two parameters: the symbolic length and alphabet size, which limits the applicability of the technique. The optimal parameter values are highly application dependent. Typically, they are either set to a fixed value or experimentally probed for the best configuration. In this work we propose an approach to automatically estimate iSAX’s parameters. The approach – AutoiSAX – not only discovers the best parameter setting for each time series in the database, but also finds the alphabet size for each iSAX symbol within the same word. It is based on simple and intuitive ideas from time series complexity and statistics. The technique can be smoothly embedded in existing data mining tasks as an efficient sub-routine. We analyze its impact in visualization interpretability, classification accuracy and motif mining. Our contribution aims to make iSAX a more general approach as it evolves towards a parameter-free method.

Early Alphabetic Inscriptions from Eretria, Greece: 8th Cent. BC Graffiti from the Sanctuary of Apollo Daphnephoros

La transmission de l'alphabet aux Grecs est un sujet encore très débattu. Les plus anciennes inscriptions alphabétiques grecques datent du VIIIe s. av. J.-C. et une majorité d'entre elles a été trouvée dans des sites eubéens. Une trentaine a été mise au jour à Erétrie, dont 26 proviennent du sanctuaire d'Apollon Daphnéphoros. Ces inscriptions, pour la plupart inscrites sur des coupes à boire, contribuaient à personnaliser des offrandes ou à leur donner de la valeur. Le sanctuaire et les pratiques rituelles qui s'y déroulaient offraient un cadre propice à l'usage précoce de l'écriture, au moment où la polis grecque se constituait.

The Hindu Model of Social Organization and the bhakti Movement : the Example of Vallabha's sampradāya

(Résumé de l'ouvrage) This volume addresses research topics within the field of Bhakti literature, the devotional poetry and other compositions of devotional character in the earlier literature of the modern South Asian languages. Its papers range from the roots of the Bhakti tradition in the early history of Krsna to its modern adaptations in nineteenth- and twentieth-century culture. Geographically, they span Bengal to Sind, Panjab to Maharashtra. Contemporary study of the modern Indian languages has broadened the scope of scholarship to consider today's Hindu attitudes, and those of a mixed society, against the background of ancient culture. Here, materials in six modern Asian languages are discussed: Bengali, Gujarati, Hindi in its main literary forms, Marathi, Panjabi and Sindhi; with assessment also of material in Sanskrit, Arabic and Chinese. In addition to studies of literary (and orally transmitted) works in the Krsna or Rama traditions, and of Sufi compositions and their interpretation, there are papers on the early history of sacred sites, the emergence of the religion of Rama, later religious formulations throughout the subcontinent, and the interaction of the Islamic and the Hindu.

Àrab en línia (2)

Des que es va concedir l’ajut (juliol 2006) fins a dia d’avui (desembre 2007) l’equip que porta endavant el projecte Àrab en línia (http://www.ub.edu/luga/AeL) ha estat desenvolupant el projecte Àrab en línia (2). A més a més, s’ha constituït en Grup Luga d’Innovació Docent de la UB (http://www.ub.edu/luga), ja que hi ha la ferma voluntat de seguir treballant en la mateixa direcció, des de la convicció que és una iniciativa que dóna resultats a mitjà i llarg termini. Els objectius que es varen proposar (elaborar paquets d’exercicis de llengua àrab adreçats al 2n nivell; produir materials compatibles amb els crèdits europeus i les assignatures semipresencials; i dissenyar unes pràctiques homogènies per al primer i segon nivell de llengua àrab) han estat plenament assolits. Seguint la dinàmica prevista, primer es va estudiar el material didàctic que s’havia adquirit i es varen dissenyar nous exercicis. D’altra banda, es va començar a fer una primera anàlisi dels exercicis que ja estaven penjats a la xarxa, tot i que aquest aspecte es va considerar millorable, ja que no es va aconseguir establir un sistema d’enquestes, sinó que els usuaris es van posar en contacte amb l’equip de manera espontània. Gràcies al servei analític de la pàgina web es va detectar que moltes de les visites procedien d’arreu del món, de manera que es va tornar a dissenyar la pàgina per tal d’adaptar-la als nous continguts, però de la mateixa manera es volia que la interfície estigués disponible, igualment, en altres idiomes. D’aquesta manera, ha passat a ser un autèntic portal d’aprenentatge de la llengua àrab, més si es té en compte que, a més a més del que s’havia previst, s’han inclòs materials que comencen des de la lecto-escriptura, així com també una part teòrica que l’estudiant pot d’utilitzar abans de fer les pràctiques.

GREC CLÀSSIC : curs d'autoaprenentatge introductori

GREC CLÀSSIC. Curs d’autoaprenentatge introductori. Dos anys. El curs consta de tretze lliçons i d’una gramàtica estructurada en quatre blocs: 1. Alfabet i diacrítics, fenòmens fonètics. 2. Morfologia nominal. 3. Morfologia verbal. 4. Infinitius i participis. Sintaxi de les oracions. L’estructura de les lliçons, excepte la primera que inclou l’alfabet, combina qüestions de morfologia nominal i verbal o de morfologia i sintaxi, tal com acostumen a fer els mètodes d’aprenentatge de les llengües modernes. Cada lliçó formula els seus objectius específics, desenvolupa la seva part de continguts i conclou amb uns exercicis pràctics d’autocorrecció. La Gramàtica, per la seva banda, està organitzada com un manual elemental de llengua grega on la persona que segueixi el curs pot ampliar la seva formació i consultar els dubtes. Parts complementàries: presentació on es formulen els objectius, la metodologia i les instruccions concretes per a seguir el curs; terminologia on s’ordenen alfabèticament els conceptes gramaticals emprats en el curs; avaluació final per tal que, més enllà dels exercicis de cada lliçó, hom pugui comprovar si ha assolit els coneixements previstos o si, en cas de no arribar-hi, ha de reforçar algunes lliçons o parts de les mateixes abans de tornar a fer l’avaluació; lèxic, ordenat alfabèticament per tal que hom pugui conèixer el significat dels mots emprats en el curs sense necessitat de consultar un diccionari. A la part d’avaluació hi ha també una enquesta per tal que les persones que segueixin el curs en facin una valoració i ens permetin corregir els seus dèficits o mancances. El projecte 2007MQD00178 ha continuat ampliant els dossiers electrònics, els exercicis autoavaluatius del seu web www.ub.edu/filologiagrega/electra i ha dedicat una part important de la seva tasca a elaborar els continguts i els programes de les assignatures dels dos primers cursos del nou grau de Filologia Clàssica.

Thinking of taking food supplements?

If your kitchen cupboards contain an alphabet of vitamin and mineral supplements, you are not alone. On the island of Ireland, one in four of us is taking food supplements, often to make up for what we feel is a lack in our normal diet, or because we feel generally run down, or to help ward off colds in the winter. But can they really make a difference? This guide to food supplements will answer most of your questions.