Lista de Projetos

O projeto tem por objetivo contribuir de uma forma inovadora para o conhecimento das práticas de visualidade e mobilidade que se desenvolveram em contextos simultaneamente cinematográficos e turísticos, no Portugal do século 20. Tendo como fonte primária principal o Arquivo Nacional da Imagem em Movimento (ANIM), da Cinemateca Portuguesa - Museu do Cinema, o enfoque da pesquisa é o "filme turístico", i.e. os filmes que visam, de uma forma mais ou menos direta, promover uma região ou localidade como destino de viagem ou, de um modo mais genérico, promover a prática da viagem. O corpus a explorar agrega filmes produzidos em Portugal entre a Primeira República e o final do Estado Novo (1910-1974), incidindo sobre formatos pouco estudados, como as curtas e médias metragens e a não ficção. O projeto intervirá teoricamente, e de uma forma inovadora e verdadeiramente interdisciplinar, nas seguintes áreas e problemáticas. (1) Estudos de turismo: distanciando-se do conceito de "tourist gaze" (Urry 1990), dado o cariz abstrato e a-histórico que o caracteriza, a fim de propor um conceito de olhar turístico alternativo, i.e. um conceito materialista, histórico e dinâmico deduzível a partir das articulações específicas que se estabelecem em torno da imagem em movimento e que se relacionam quer com o campo artístico e cinematográfico quer com as práticas de lazer e mobilidade. (2) História do cinema: revisão da historiografia do cinema português, tradicionalmente centrada na ficção, com vista a recuperar formatos e géneros subestimados ou ignorados, entre os quais se encontram os filmes turísticos. Esta revisão acompanha o interesse crescente em fontes históricas marginais, bem como os recentes avanços na organização e no acesso aos arquivos. (3) Estudos fílmicos e de fontes históricas marginais, bem como os recentes avanços na organização e no acesso aos arquivos. (3) Estudos fílmicos e de género: reconceptualização do filme turístico a partir dos visionamentos de vários filmes,...

Main Objective: The primary contribution of the project will be twofold: (i) we will demonstrate a number of collective behaviors on a system of aquatic drones to show that systems of such drones have the potential to take on important maritime tasks, and (ii) we will explore the application of our novel hybrid approach to the synthesis of self-organized controllers for multirobot systems.

Broadband wireless systems require high power and spectral efficiencies, and transmission over severely time-dispersive channels. Developing on the concept of Linear Amplification with Non- Linear Components (LINC), the main technical objective of the project is to design, implement and validate a new set of digital transmission techniques with high power and spectral efficiency for future wireless broadband systems to be employed in the uplink of mobile systems or in satellite communications. Our main goal is to design signals with low Peak-to-Average Power Ratio (PAPR) or even quasi-constant envelope and high spectral efficiency, employing amplification techniques based on low- cost, highly efficient grossly NonLinear (NL) amplifiers (e.g., class D and E amplifiers), which are simpler and have higher amplification and output power then quasi-linear amplifiers. Since a grossly NL amplifier is only suitable for signals with quasi-constant envelope, we will develop new signal designs and/or transmission techniques compatible with grossly NL amplifiers.This research project combines theoretical development (including signal and receiver design), CMOS implementation of key components (with emphasis on matched amplifiers and output power combination with minimum losses) and FPGA-based implementation for an overall system’s proof of concept, for the most promising techniques.

The main technical objectives of the project are to design, implement and validate a set of techniques that enables efficient coexistence of heterogeneous systems (macro and smallcells). The aim is to design and demonstrate practical joint cooperative and cognitive transmission/reception techniques to improve the user’s fairness and throughput of the entire network. The specific objectives include:•Design linear precoding techniques to mitigate both intra-system (on each smallcell or macro-cell) and inter-systems (smallcell/macrocell) interferences. We consider that some terminals are equipped with cognitive capabilities to efficient design the precoders, namely the ones used to mitigate the inter-system interference. •Design joint precoding and detection techniques for uplink to mitigate both intra/inter-system interferences. The aim is to combine the interference alignment with efficient equalization schemes (e.g. IB-DFE based ones).•Design efficient signaling strategies both for the feedback of wireless link information and distribution among the cooperating network elements, aiming to optimize the trade-off between achieved performance and signaling overhead. Moreover, particular emphasis will be placed on inter-system feedback and quantization strategies. •Assessment and validation of the proposed downlink and uplink algorithms under realist scenarios, trough a multilink level simulator based on LTE specification.•Development of an FPGA based testing infrastructure allowing to experimentally show the feasibility of the proposed algorithms. We extend the FPGA infrastructure developed in the previous IT/CELCOP project for the envisioned heterogeneous network. Selected algorithms (the simplest ones) will be tested in this infrastructure. Besides these technical objectives we also aim and consider of high importance the following objectives,•Attract students for a career in R&D in the field of telecommunications. •Promotion of research collaborations between re...