Browsing by Issue Date, starting with "2014-08"
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- O adultério feminino mediado pelo olhar de Monique Rutler ou o charme discreto de uma burguesia republicana e falsa-moralista.Publication . Pereira, Ana CatarinaA década de 90 seria um período marcante na História do Cinema Português. Uma democracia recentemente conquistada (1974), a entrada do país na União Europeia (1986) e a tentativa de promulgação de medidas que fomentassem a igualdade de oportunidades, geravam debate e questionamento. Alguns dos mais densos filmes então estreados — de Teresa Villaverde, Pedro Costa, Margarida Gil, João Canijo, Solveig Nordlund ou João César Monteiro — revelam distanciações fracturantes, enquanto denunciam os inúmeros problemas que asfixiam determinados segmentos da sociedade. As imagens de crianças e adolescentes que crescem e que são educadas num país de instabilidade face ao novo, subúrbios marginalizados e injustiças perenes seriam dominantes na cinematografia daqueles anos. Neste contexto, Monique Rutler decide realizar um filme de época. Olhando o passado, questionou o presente e perspectivou um futuro que poderia retroceder, caso não se prestasse a devida atenção aos poderes instituídos e se consentisse no tratamento discriminatório de mulheres e operários. Depois de intensas pesquisas, a cineasta franco-portuguesa revelou novamente a história de Adelaide Coelho da Cunha, filha do fundador do jornal Diário de Notícias, e primeira mulher de um dos seus directores, internada e sujeita a tratamentos psiquiátricos indevidos, por ter escolhido viver um amor adúltero. A denúncia deveria ter suscitado o escândalo e a consternação, motivado o público e conhecido uma maior distribuição pelas salas de cinema. Todavia, a terceira longa-metragem de Monique Rutler parece ser, em todos os sentidos possíveis, uma história maldita. Estreado comercialmente no ano de 1992 em apenas três salas do país, o filme não foi além dos 2706 espectadores.[1] Por outro lado, sendo uma das mais marcantes narrativas sobre a condição feminina num determinado período da História de Portugal, é também uma das mais esquecidas. O propósito deste artigo é assim o de chamar a atenção para a invisibilidade de um caso verídico de graves atentados a princípios éticos e deontológicos — não apenas universais, mas também, e particularmente, dos profissionais de saúde. [1] Dados fornecidos pelo Instituto do Cinema e do Audiovisual (ICA).
- Opportunities for the energy efficiency improvement in the diary food sectorPublication . Nunes, José; Silva, Pedro Dinho da; Andrade, Luís P.; Gaspar, Pedro DinisWorldwide, cheese is a major dairy food product with great nutritional value and organoleptic characteristics. Over 20.4 million metric tons of cheese were produced worldwide in 2012 (80 thousand tons in Portugal). This paper characterizes the production process and the energy consumption of traditional cheese industry in Portugal (31 companies) and discusses the average specific energy consumption (SEC). Data collection was conducted via survey to obtain information about the facilities, the production process, quantities of raw materials, characteristics of cooling systems, and energy consumption. The average value of this indicator for this sample was 0.152 kWh/l.RM (handmade type) to 0.283 kWh/l.RM (industrial type). Electricity consumption is about 63% of the total energy consumption, mainly due to the energy supply of the refrigeration systems. The potential of energy saving was estimated at 20.8% (handmade type) and 19.4% (industrial type).
- Planning and dynamic spectrum management in heterogeneous mobile networks with QoE optimizationPublication . Robalo, Daniel Luís Silveira; Velez, Fernando José da SilvaThe radio and network planning and optimisation are continuous processes that do not end after the network has been launched. To achieve the best trade-offs, especially between quality and costs, operators make use of several coverage and capacity enhancement methods. The research from this thesis proposes methods such as the implementation of cell zooming and Relay Stations (RSs) with dynamic sleep modes and Carrier Aggregation (CA) for coverage and capacity enhancements. Initially, a survey is presented on ubiquitous mesh networks implementation scenarios and an updated characterization of requirements for services and applications is proposed. The performance targets for the key parameters, delay, delay variation, information loss and throughput have been addressed for all types of services. Furthermore, with the increased competition, mobile operator’s success does not only depend on how good the offered Quality of Service (QoS) is, but also if it meets the end user’s expectations, i.e., Quality of Experience (QoE). In this context, a model for the mapping between QoS parameters and QoE has been proposed for multimedia traffic. The planning and optimization of fixed Worldwide Interoperability for Microwave Access (WiMAX) networks with RSs in conjunction with cell zooming has been addressed. The challenging case of a propagation measurement-based scenario in the hilly region of Covilhã has been considered. A cost/revenue function has been developed by taking into account the cost of building and maintaining the infrastructure with the use of RSs. This part of the work also investigates the energy efficiency and economic implications of the use of power saving modes for RSs in conjunction with cell zooming. Assuming that the RSs can be switched-off or zoomed out to zero in periods when the traffic exchange is low, such as nights and weekends, it has been shown that energy consumption may be reduced whereas cellular coverage and capacity, as well as economic performance may be improved. An integrated Common Radio Resource Management (iCRRM) entity is proposed that implements inter-band CA by performing scheduling between two Long Term Evolution – Advanced (LTE-A) Component Carriers (CCs). Considering the bandwidths available in Portugal, the 800 MHz and 2.6 GHz CCs have been considered whilst mobile video traffic is addressed. Through extensive simulations it has been found that the proposed multi-band schedulers overcome the capacity of LTE systems without CA. Result shown a clear improvement of the QoS, QoE and economic trade-off with CA.
- Trends in protein-based biosensor assemblies for drug screening and pharmaceutical kinetic studiesPublication . Gonçalves, Ana M; Pedro, Augusto; Santos, F M; Martins, Luís M; Baptista, Cláudio; Queiroz, João; Passarinha, L AThe selection of natural and chemical compounds for potential applications in new pharmaceutical formulations constitutes a time-consuming procedure in drug screening. To overcome this issue, new devices called biosensors, have already demonstrated their versatility and capacity for routine clinical diagnosis. Designed to perform analytical analysis for the detection of a particular analyte, biosensors based on the coupling of proteins to amperometric and optical devices have shown the appropriate selectivity, sensibility and accuracy. During the last years, the exponential demand for pharmacokinetic studies in the early phases of drug development, along with the need of lower molecular weight detection, have led to new biosensor structure materials with innovative immobilization strategies. The result has been the development of smaller, more reproducible biosensors with lower detection limits, and with a drastic reduction in the required sample volumes. Therefore in order to describe the main achievements in biosensor fields, the present review has the main aim of summarizing the essential strategies used to generate these specific devices, that can provide, under physiological conditions, a credible molecule profile and assess specific pharmacokinetic parameters.