Browsing by Issue Date, starting with "2017-03"
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- MyMessage.GiftPublication . Nogueira Marques, RuiO presente trabalho descreve uma solução de partilha de mensagens através de uma plataforma multicanal, que conjuga o meio físico e o meio digital. O intuito principal desta aplicação é aproximar o cliente de ourivesaria à possibilidade de aceder a uma mais valia, quando pretende oferecer algo especial: a oferta de uma peça e, simultaneamente, de uma emoção, uma emoção em formato digital e duradouro, com a particularidade de ser "amigável" em termos de novos média. O objetivo seria também não barrar o uso da aplicação a outras áreas de negócio que não a ourivesaria. Nessa perspetiva, para ser possível potenciar o seu uso, foi implementado um processo de “Try-n-Buy”, para efeitos de teste e validação de qualidade de serviço, permitindo, desta forma, o teste das potencialidades da ferramenta por parte do consumidor. A aplicação resultante é um produto comercial real e patente no mercado, que possibilita partilha de um conteúdo multimédia, por cartão físico de plástico, um código QR impresso ou por um endereço URL. O seu desenvolvimento foi levado a cabo por uma pequena equipa de duas pessoas e durou 8 meses. As tecnologias usadas são open-source, entre elas PHP e MySQL, usufruindo das particularidades da metodologia Agile que a Framework Laravel permite, mantendo a arquitetura de software no modelo MVC. Esta apresentação descreve assim as várias particularidades de contexto da área de ourivesaria, as escolhas efetuadas para implementação do trabalho em mãos, assim como os resultados do esforço realizado.
- Appliance Shifting for Sequential Processes in Home Management SystemPublication . Spínola, João; Faria, Pedro; Vale, ZitaHome management systems are evolving to enable a more adaptive model to the many consumer’s behaviors, such as, periods of more consumption, habits of appliance use, amongst others. In another perspective, there are processes that require a start-after and sequential operation of multiple appliances, which currently is not a feature that exists in many of the home management systems. The present paper proposes a model to formulate sequential appliances load shifting, such that, the respective processes that the consumer has are maintained implemented correctly. The case study considers multiple appliances that exist in a home, with a sampling of 15 minutes, which is important in order to better observe the appliances consumption cycles.
- Validation of the Portuguese version of the Psychotic Symptom Rating Scales (PSYRATS)Publication . Telles-Correia, Diogo; Rocha, Nuno; Gama-Marques, João; Moreira, Ana L; Alves-Moreira, Cátia; Saraiva, Sérgio; Antunes, Filipa; Almeida, Carolina; Machado, Sérgio; Haddock, GillianThe Psychotic Symptom Rating Scales (PSYRATS) is a clinical assessment tool that focuses on the detailed measurement of delusions and hallucinations in patients with psychosis. The goal of this study was to examine the psychometric properties of the Portuguese version of the PSYRATS. A sample of 92 outpatients suffering from schizophrenia or schizoaffective disorders and presenting persistent psychotic symptoms was assessed using the PSYRATS and the Positive and Negative Syndrome Scale (PANSS). Good inter-rater reliability, test-retest reliability, concurrent validity and internal consistency were found. Factor analysis of the auditory hallucinations scale items disclosed a four-factor solution: emotion characteristics and disruption factor (factor 1), a physical characteristics factor (factor 2), a control characteristics factor (factor 3) and a cognitive attribution factor (factor 4). Regarding the delusions scale items, a two-factor solution was found: cognitive interpretation and disruption factor (factor 1) and an emotional characteristics (factor 2). The Portuguese version of the PSYRATS partially replicates previously published results in other countries.
- Efeito da musculatura estabilizadora lombar no tilt pélvico: flexão ativa do joelho em decúbito ventralPublication . Valente, Tiago Miguel Cardoso; Macedo, Rui; Sousa, AndreiaIntrodução: As lombalgias inespecíficas estio associadas disfunções de controlo motor, como por exemplo alterações do padrão de recrutamento, que comprometem a estabilidade. Esta pode ser avaliada pelo teste flexão ativa do joelho em decúbito ventral (FAJDV). A amplitude de movimento da coluna lombar, até aos 90* de flexão do joelho é um indicador de estabilidade. Será que em populações assintomáticas, alterações do padrão de recrutamento correlacionam-se com alterações da estabilidade? Objetivo(s): avaliar a estabilidade lombar, em função dos onsets e em função de diferentes sequências de ativação, no teste FAJDV Métodos: realizou-se um estudo observacional, analítico e transversal com uma amostra de 30 participantes sem história de dor lombar nos últimos 12 meses. Avaliou-se os onsets da transverso do abdómen, erector da coluna, grande glúteo e do semi-tendinoso, durante FADV. Recorreu-se a regressão linear simples e.p. Spearman para verificar correlações entre os onsets do transverso do abdómen, eretor da coluna, grande glúteo e o arco lombar total (ALT) c o arco lombar aos 90º de flexão do joelho (AL9OFJ) Identificaram-se as duas principais sequências que levaram á criação do grupo I, em que a transverso do abdómen ativa antes do eretor da coluna (TrA-EC), grupo 2. em que o transverso ativa depois do eretor da coluna (EC-TrA). Para comparar as amplitudes do movimento entre grupos, recorreu - se ao teste de Mann-Whitney , com nível de significância de 5 % e intervalo de confiança de 95 %. Resultados: no grupo I (TrA-EC) registou se que o ALT e o AL90FJ, foram estatisticamente menores que o grupo no 2 (EC-TrA)L (p 0.05) Conclusão: A sequencia de ativação correlacionam-se com as amplitudes de movimento da coluna lombar Palavras-chave: teste de controlo motor, lombalgia inespecífica; eletromiografia: músculos estabilizadores lombares
- Generation of spheroids of cancer cells for screening of antitumour activity of cyanobacterial extracts and isolated compounds.Publication . Sousa, Maria Lígia; Preto, Marco; Vasconcelos, Vítor; Martins, Rosário; Linder, Stig; Leão, Pedro; Urbatzka, RalphThe use of 3D cell culture for modelling cancer research is gaining interest, and in particular for screening of bioactive compounds. In the presented work, three compounds isolated from cyanobacteria and 92 chromatographic fractions obtained from crude organic extracts of 28 cyanobacterial strains from the Portuguese coast were tested on multicellular spheroids generated from the human cell lines HCT116 (colon colorectal carcinoma), HT-29 (colon adenocarcinoma) and A549 (lung carcinoma). Spheroids were incubated and analysed in an IncuCyte® ZOOM System, and M30 Cytodeath ELISA was performed for apoptosis. Portoamides isolated from Oscillatoria sp. LEGE 05292 reduced HCT116 spheroid integrity. Bartoloside B from Synechocystis salina LEGE 06155 decreased the size of HCT116 spheroids. Compound A isolated from Nodularia sp. LEGE 06071 induced a loss of the boundaries of the spheroid. Beyond that, portoamides induced apoptosis on HCT116 and HT29 spheroids, and compound A on HCT116 and A549 spheroids. The screening revealed that five fractions reduced the spheroid integrity; isolation of the active components will be done in the future by bioassay-guided fractionation. We conclude that the tested compounds and extracts show biological activities on multicellular spheroids and are therefore interesting candidates to be further developed as therapeutics for solid tumors.
- High-Performance Parallelisation of Real-Time Applications with the Upscale SDKPublication . Pinho, Luís MiguelNowadays, the prevalence of computing systems in our lives is so ubiquitous that it would not be far-fetched to state that we live in a cyber-physical world dominated by computer systems. These systems demand for more and more computational performance to process large amounts of data from multiple data sources, some of them with guaranteed processing response times. In other words, systems are required to deliver their results within pre-defined (and sometimes extremely short) time bounds. Examples can be found for instance in intelligent transportation systems for fuel consumption reduction in cities or railway, or autonomous driving of vehicles. To cope with such performance requirements, chip designers produced chips with dozens or hundreds of cores, interconnected with complex networks on chip. Unfortunately, the parallelization of the computing activities brings many challenges, among which how to provide timing guarantees, as the timing behaviour of the system running within a many-core processor depends on interactions on shared resources that are most of the time not know by the system designer. P-SOCRATES (Parallel Software Framework for Time-Critical Many-core Systems) is an FP7 European project, which developed a novel methodology to facilitate the deployment of standardized parallel architectures for real-time applications. This methodology was implemented (based on existent models and components) to provide an integrated software development kit, the UpScale SDK, to fully exploit the huge performance opportunities brought by the most advanced many-core processors, whilst ensuring a predictable performance and maintaining (or even reducing) development costs of applications. The presentation will provide an overview of the UpScale SDK, its underlying methodology, and the results of its application on relevant industrial use-cases.
- Building Management Model Considering Demand Response and Occupancy DataPublication . Spínola, João; Garcia, Óscar; Catalina, Jorge; Guevara, Fabio; Faria, Pedro; Vale, ZitaThe recursive implementation of smart grid measures in the current energy systems, introduces demand-side resources to new concepts that require their active participation and management. However, these management systems often don’t consider a human factor, i.e. the features that effect the personal comfort of each person, e.g. the lighting, air conditioning, appliances in a given space. In this way, the present paper proposes a methodology for dealing with locational sensor data, to perform the implementation of demand response programs. At the same time, the methodology addresses the scheduling of distributed generation and external suppliers to balance the consumer’s load. The proposed methodology is tested on a case study involving the management of an office building, adapted to simulated sensor data.
- Framework to Enable Heterogeneous Systems InteroperabilityPublication . Teixeira, Brígida; Pinto, Tiago; Santos, Gabriel; Praça, Isabel; Vale, ZitaThe electricity markets have been suffering profound changes over the years. Nowadays, the European Union comes to reformulate its politics related with renewable energy sources, in order to encourage microgeneration, having demand response as one of the biggest challenges. Various simulators have been developed that intend to give decision support to the various entities. However, they present the limitation of being designed to answer specific problems. This paper proposes the framework Tools Control Center (TOOCC) as the mechanism to integrate various independent and heterogeneous simulators, so they operate as a unique simulation tool and become capable of answering to more complex problems.
- Microgrid Demonstration Platform: Modbus TCP/IP Connection for Real-Time Monitoring of a Wind TurbinePublication . Sousa, Filipe; Spínola, João; Zawiślak, KrzysztofSeveral countries promote wind energy despite their high installation cost, since over time these investments can become profitable. It is important that energy entrepreneurs have up-to-date information of operation parameters, to identify places where excessive energy consumption occurs. For energy management, it is necessary to have an overview of the whole system, such that reporting and further result analysis can be made. With monitoring and control systems, it is possible to enable an improved management of resources, especially in terms of balance between generation and consumption. In this work, it is proposed a graphical interface to monitor and control a wind turbine, in a simulation environment running four operation scenarios.
- A Case Study for a Smart City Energy Management ResourcesPublication . Canizes, Bruno; Pinto, Tiago; Soares, João; Vale, Zita; Chamoso, Pablo; Santos, DanielA physical smart city model environment is used to presents the demonstration of an energy resources management approach. The demand for smart cities has been created by several factors from the governments, society and industry. Thus, smart grids focus on the intelligent management of energy resources in order to maximize the usage of the energy from renewable sources in order to the final consumers feel the positive effects of less expensive (and pollutant) energy sources, namely in their energy bills. A large amount of work is being developed in the energy resources management domain, but an effective and realistic experimentation are still missing. This paper presents a realistic and physical experimentation of the energy resource management. This is done by using a physical smart city model, which includes several consumers, generation units, and electric vehicles.
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