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Direitos humanos e globalização

In the present text we identify some of the main properties of a set of propositions about the sociological relations that can be established between the democratic processes and citizenship. We specifically highlight the properties that can be conceptualized in the frame of a liberal model and the ones that can be red in the light of a republican model. Given the description that is done, we try to sketch some...

Trajectos de aquisição do poder no feminino

Reconhecimento do Orador

Verification of a person identity based in voice alone is an evolving technology with applications in secure access to information, access control to buildings, and telecommunications in general. This work addresses several of the possibilities available in the implementation of an automatic speaker verification system, independent of text, based in phoneme recognition. We studied ...

Machine Learning of European Portuguese Grapheme-To-Phone Conversion using a Ri...

In this study evaluation of two self-learning methods (MBL and TBL) on European Portuguese grapheme-tophone conversion is presented. Combinations (parallel andcascade) of the two systems were also tested. The usefulness of using syllable related information in machine learning approaches is also investigated. Systems with good performance were obtained both using a single self-learning method and combinati...

Interacção Humano-Robô ao Nível da Linguagem

Developing a system capable of using spoken language for interaction with humans has been pursued by several studies. Such systems are interesting by allowing humans to communicate with machines in a simple and intuitive way. We present, in this paper, the current development stage of the spoken language interface of the robot Carl. ; O desenvolvimento de um sistema capaz de interagir com um ser humano atrav&e...

A Vocal Tract Segmentation and Analysis over a European Portuguese MRI Database

Knowledge of the speech production mechanism is essential for the development of speech production models and theories. Magnetic Resonance Imaging delivers high quality imaging of soft tissue. To our knowledge, there are no complete systematic Magnetic Resonance Imaging studies ofEuropean Portuguese production. With this work, we intendto create a database of Magnetic Resonance Imaging imagesof European Portugu...

Simulation of a Chromatic Dispersion Monitoring Scheme Using an Optical Delay-a...

A new postdetection method of dispersion is proposed, based on a scheme previously implemented, and that additionally uses a Bit Error Rate (BER) analyser, which allows the extending of the monitoring window. The monitoring method was tested with transmission rates of up to 40 Gbit/s. It showed monitoring windows of at least ± 300 ps / nm, as well as the ability to adapt to different modulation formats, ...

Chromatic dispersion monitoring technique using optical asynchronous sampling a...

We present the equations that led to the novel nal equation, which relates chromatic dispersion with the power amplitude, measured in a time window. ; We present the equations that led to the novel nal equation, which relates chromatic dispersion with the power amplitude, measured in a time window.

Polarization Mode Dispersion Measurements using Low-Coherence Interferometry

An interferometric setup for measuring Polarization Mode Dispersion (PMD), was tested. It uses a low-coherence technique in a Michelson interferometer to determine the PMD values in two reels, measuring the Differential Group Delay (DGD). The low-coherence source bounds the minimum value of DGD detected to 0,13 ps, leading to a minimum value detected around 0,14 ps. The measured PMD mean value for one reel, in ...

Degradação de fibras ópticas devido à propagação de sinais de elevada intensidade

The propagation of high power signals in optical fibers can lead to the fibre degradation and destruction. In this work we study three forms of degradation resulting from the high optical power propagation: i) increasing of the fiber coating temperature for bending situation; ii) degaradation of optical connectors; and iii) ignition and propagation of the fuse effect that can lead to the destruction of the opti...