323 research outputs found

    Novos serviços interactivos para televisão digital

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    Esta Dissertação decorre da conclusão do Mestrado Integrado em Engenharia Informática e Computação e foi proposta pela empresa MOG Solutions. Pretende-se com este trabalho desenvolver formas que possibilitem produtores de conteúdo audiovisual introduzirem conteúdos interativos complementares, recorrendo a uma camada de anotação de dados e a software para Smart TVs.A televisão tem vindo a perder importância relativa devido, principalmente, a dispositivos alternativos de consumo de conteúdos com acesso à Internet, como computadores, tablets ou smartphones. Estes dispositivos possibilitam formas de interação com os conteúdos que não são possíveis com o modelo atual de televisão, levando a uma perda de espetadores, que se traduz em perda de receita e em decréscimo da qualidade do produto final. Embora se tenha tentado desenvolver serviços complementares, estas soluções necessitavam de equipamento adicional e eram de difícil implementação e sincronização com o sinal linear.Pretende-se com esta dissertação conceber e desenvolver uma solução de interatividade, no contexto do consumo de conteúdo televisivo linear em Smart TVs, que evite a complexidade e o problema de sincronismo referido. Para atingir este objetivo, um número de desafios necessita de ser considerado, nomeadamente:* Identificação do tipo de interatividade que deve ser oferecido ao utilizador;* Identificação do tipo de metadados e como representá-los;* Definição de como adicionar estes metadados adicionais ao sinal linear de TV;* Especificação de uma camada de software para tratar os metadados do lado do cliente e da forma de envio e execução nesse mesmo lado;* Criação de um protótipo que demonstre as possibilidades das soluções propostas, simplificando e permitindo a interação dos consumidores com o conteúdo adicional.Como propostas de implementação da solução, sugere-se a utilização de uma extensão do MPEG-7 para anotação de conteúdos e a utilização da norma HbbTV para envio de uma aplica- ção genérica para a Smart TV do cliente. Esta aplicação desenvolvida em HTML terá a função de receber as anotações, processá-las e convertê-las numa interface usável pelo utilizador. Os ele- mentos adicionais, tais como imagens, tanto deverão poder ser descarregados da Internet, como virem embebidos na aplicação.Como caso de uso demonstrativo são fornecidas informações complementares a um anúncio publicitário e é introduzida essa mesma publicidade num momento temporal específico de um programa de televisão. Para avaliar o cumprimento dos objetivos é avaliado se a informação complementar chega ao cliente, se é apresentada de acordo com o especificado nos metadados e se está sincronizada com a programação linear.This Dissertation is associated with the conclusion of the MSc in Informatics and Computing Engineering and it was proposed by the company Mog. The aim of this work is to develop new tools to allow producers of audiovisual content to insert additional interactive content in Smart TVs, using a layer of metadata and software.The television has been losing relative importance, mainly due to alternative content consumption devices with Internet access, like computers, tablets or smartphones. These devices allow new ways of interaction with content that are not possible with the current television model, leading to a loss of viewers that translates into loss of revenue and decrease in the quality of the final product. The development of complementary services has been tried, but these solutions required additional equipment and revealed to be difficult to implement and synchronize with the linear signal.The aim of this Dissertation is to design and develop a solution of interactivity in the context of linear television consumption in Smart TVs. The solution must also avoid complexity and synchronization problem referred. To achieve this goal, a number of challenges need to be addressed notably:* Identification of the type of interactivity that should be offered to the user;* The type of metadata required and how to represent it;* How to add this additional metadata to the linear TV signal;* Specification of a software layer to handle the metadata at the client side and how to deliver it to and run it in the client;* Creation of a prototype to demonstrate the possibilities of the proposed solutions, streamlining the TV enhanced content to the consumers and allowing them to interact with it.We suggest the use of an extension to MPEG-7 to annotate the content and the HbbTV standard to send a generic HTML application to client's Smart TV. This application will receive, process and convert the metadata to an interface usable by the user. The additional assets, like images, can be downloaded from the Internet or can be embedded with the application.As a demonstrative use case, complementary information to an ad is showed, and the same ad is associated with a specific temporal moment of a television program. To assess the fulfilment of the objectives, it is verified if the complementary information reaches the client, if it is presented according the specified in the metadata and if it is synchronized with the linear programming

    Comparing psychopathological symptoms in portuguese football fans and non-fans

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    The present study aims to characterize football fans and non-fans and to compare their psychopathological symptoms with the latest normative values for the Portuguese population from Canavarro in 2007. Results showed that football fans and non-fans are mostly male, have an affective relationship, are childless, have secondary education or a high degree, and are employed or students; fans are more likely to be male, dating, unemployed, to have elementary education and be younger than non-fans. Football fans present significantly higher psychopathological symptoms than non-fans in somatization, interpersonal sensitivity, anxiety, hostility, paranoid ideation and psychoticism and all psychopathological indexes. Football fans present values very close to those of populations with emotional distress in hostility and are above the mean of the general population in obsession–compulsion, hostility, paranoid ideation and psychoticism.info:eu-repo/semantics/publishedVersio

    Impact of dietary inclusion of wine and olive oil waste extracts on physiological and health status of seabass (Dicentrarchus labrax)

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    Aquaculture is the only way to satisfy the growing global demand for seafood without depleting natural fisheries resources. Disease outbreaks are major threats to aquaculture production. The use of antibiotics or chemotherapeutics has been a common practice to combat infectious diseases that threaten production and induce high economic losses. This practice promotes high environmental harmful impacts and risks to human health (e.g., antibiotic-resistant bacteria). Thus, the development of nutritional strategies, such as natural functional supplements (FS) that preserve fish's health and well-being while preventing potential zoonotic disease and antibiotics use, is highly recommended to achieve the economical and sustainability of aquaculture. Wine and olive oil industry by-products (such as grape marc (GM) and olive pomace (OP)) are a source of high-value bioactive molecules, such as antioxidant and phenolic compounds. Thus, the valorisation of these agro-industrial by-products into new FS for aquafeeds is of high practical interest, contributing to the circular economy. The present study aims to evaluate the prospective beneficial effects of a previous optimised antioxidant-rich extract of a GM and OP mixture (WO) on seabass physiological and health status. For this purpose, two similar plant-based diets were formulated, including 0 (control diet) and 0.4% of WO extract (WO diet), corresponding to 0 and 91.1 of total antioxidants (m TE/g diet), respectively. After feeding seabass with these diets for ten weeks, the fish haematological, biochemical and immunological were assessed. The results demonstrated that 0.4% optimised WO extract decreases the mean corpuscular volume (control 159 ±53; WO 119± 9, p=0.042) in seabass. Other immunological parameters are being performed further to understand this extract's impact on seabass health status.Project SPO3 (ref.POCI-01-0145-FEDER-030377;FCT); project InovFeed(ref. MAR02.01.01-FEAMP-0111;Mar2020)info:eu-repo/semantics/publishedVersio

    Addressing ageism : be active in aging: study protocol

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    Ageism refers to stereotyping (how we think), prejudice (how we feel), and discrimination (how we act) against people based on their age. It is a serious public health issue that can negatively impact older people’s health and quality of life. The present protocol has several goals: (1) adapt the Ambivalent Ageism Scale for the general Portuguese population and healthcare professionals; (2) assess the factorial invariance of the questionnaire between general population vs. healthcare professionals; (3) evaluate the level of ageism and its predictors in the general population and evaluate the level of ageism and its predictors in healthcare professionals; (4) compare the levels of ageism between groups and the invariance between groups regarding the explanatory model of predictors of ageism. This quantitative, cross-sectional, descriptive, observational study will be developed in partnership with several Healthcare Professional Boards/Associations, National Geriatrics and Gerontology Associations, and the Universities of the Third Age Network Association. The web-based survey will be conducted on a convenience sample recruited via various social media and institutional channels. The survey consists of three questionnaires: (1) Demographic data; (2) Ambivalent Ageism Scale; (3) Palmore-Neri and Cachioni questionnaire. The methodology of this study will include translation, pilot testing, semantic adjustment, exploratory and confirmatory factor analysis, and multigroup analysis of the Ambivalent Ageism Scale. Data will be treated using International Business Machines Corporation (IBM®) Statistical Package for the Social Sciences (SPSS) software and Analysis of Moment Structures (AMOS). Descriptive analysis will be conducted to assess the level of ageism in the study sample. The ageism levels between the two groups will be compared using the t-student test, and two Structural Equation Modeling will be developed to evaluate the predictors of ageism. Assessing ageism is necessary to allow healthcare professionals and policymakers to design and implement strategies to solve or reduce this issue. Findings from this study will generate knowledge relevant to healthcare and medical courses along with anti-ageism education for the Portuguese population.info:eu-repo/semantics/publishedVersio

    Aripiprazole offsets mutant ATXN3-induced motor dysfunction by targeting dopamine D2 and serotonin 1A and 2A receptors in C. elegans

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    The atypical antipsychotic aripiprazole is a Food and Drug Administration-approved drug for the treatment of psychotic, mood, and other psychiatric disorders. Previous drug discovery efforts pinpointed aripiprazole as an effective suppressor of Machado–Joseph disease (MJD) pathogenesis, as its administration resulted in a reduced abundance and aggregation of mutant Ataxin-3 (ATXN3) proteins. Dopamine partial agonism and functional selectivity have been proposed as the main pharmacological mechanism of action of aripiprazole in the treatment of psychosis; however, this mechanism remains to be determined in the context of MJD. Here, we focus on confirming the efficacy of aripiprazole to reduce motor dysfunction in vivo, using a Caenorhabditis elegans (C. elegans) model of MJD, and on unveiling the drug targets required for its positive action against mutant ATXN3 pathogenesis. We employed pharmacogenetics and pharmacological approaches to identify which dopamine and serotonin receptors are critical for aripiprazole-mediated improvements in motor function. We demonstrated that dopamine D2-like and serotonin 5-HT1A and 5-HT2A receptors play important roles in this process. Our findings strengthen the relevance of dopaminergic and serotoninergic signaling modulation against mutant ATXN3-mediated pathogenesis. The identification of aripiprazole’s cellular targets, relevant for MJD and perhaps other neurodegenerative diseases, may pave the way for prospective drug discovery and development campaigns aiming to improve the features of this prototypical compound and reduce side effects not negligible in the case of aripiprazole.This work was funded by FEDER through the Competitiveness Internationalization Operational Program (POCI) and by National funds through the Foundation for Science and Technology (FCT), under the scope of the project POCI-01-0145-FEDER-0 31987, NORTE-01-0145-FEDER-000013, and NORTE-01-0145-FEDER-000023, supported by the Northern Portugal Regional Operational Program (NORTE 2020), under the Portugal 2020 Partnership Agreement through the European Regional Development Fund (ERDF) and by ICVS Scientific Microscopy Platform, member of the national infrastructure PPBI—Portuguese Platform of Bioimaging (PPBI-POCI-01-0145-FEDER-022122; by National funds through the Foundation for Science and Technology (FCT)—project UIDB/50026/2020 and UIDP/50026/2020). Additionally, this project was supported by the National Ataxia Foundation (NAF). A.J., J.P.-S., D.V.-C., and J.D.S. were supported by the FCT individual fellowships SFRH/BD/76613/2011, PD/BDE/127834/2016, SFRH/BD/147826/2019, and PD/BD/128074/2016, respectively

    Biometric genetics in Cowpea beans (Vigna unguiculata (L.) Walp) II: estimates of genetic gains through selection indices

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    Low cowpea productivity (Vigna unguiculata (L.) Walp) in the semi-arid region of Paraíba is due, among other factors, to poor-quality cultivars. This research tested biometric models intending to increase productivity of superior cultivars with the following objectives: i. Estimate genetic gains in production components; ii. Identify the selection index model providing the greatest gains through simultaneously selecting a set of variables, and iii. Select cultivars with higher productivity. The experiment was carried out in the experimental field of the Agrifood Science and Technology Center of the Federal University of Campina Grande. Eight cultivars and 13 variables were evaluated. Data were subjected to ANOVA and means were grouped using the Scott and Knott test. Genetic gains were estimated by correlated response, classic selection index, rank sum and index based on desired gains. Direct selection of the secondary pod yield component provides significant genetic gains in main grain yield. Among the methodologies used, the classic selection index provided greater distribution of genetic gains for main grain yield and primary production components. These results allow concluding that Costela de vaca, BRS Marataoã and Paulistinha cultivars should be selected for cultivation and commercial exploitation in the semiarid region of Paraíba. Highlights: Direct selection of the secondary pod yield component provides significant genetic gains in main grain yield. The classic selection index provided greater distribution of genetic gains for main grain yield and primary production components. Cultivars were selected for cultivation and commercial exploitation in the semi-arid region of Paraíba.Low cowpea productivity (Vigna unguiculata (L.) Walp) in the semi-arid region of Paraíba is due, among other factors, to poor-quality cultivars. This research tested biometric models intending to increase productivity of superior cultivars with the following objectives: i. Estimate genetic gains in production components; ii. Identify the selection index model providing the greatest gains through simultaneously selecting a set of variables, and iii. Select cultivars with higher productivity. The experiment was carried out in the experimental field of the Agrifood Science and Technology Center of the Federal University of Campina Grande. Eight cultivars and 13 variables were evaluated. Data were subjected to ANOVA and means were grouped using the Scott and Knott test. Genetic gains were estimated by correlated response, classic selection index, rank sum and index based on desired gains. Direct selection of the secondary pod yield component provides significant genetic gains in main grain yield. Among the methodologies used, the classic selection index provided greater distribution of genetic gains for main grain yield and primary production components. These results allow concluding that Costela de vaca, BRS Marataoã and Paulistinha cultivars should be selected for cultivation and commercial exploitation in the semiarid region of Paraíba. Highlights: Direct selection of the secondary pod yield component provides significant genetic gains in main grain yield. The classic selection index provided greater distribution of genetic gains for main grain yield and primary production components. Cultivars were selected for cultivation and commercial exploitation in the semi-arid region of Paraíba

    Biometric genetics in cowpea beans (Vigna unguiculata (L.) Walp) I: phenotypic and genotypic relations among production components

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    In the semi-arid region of Paraíba, cowpea has low productivity due to irregular rainfall and poor use of production technologies. An extensive study aimed at selecting more productive cultivars was conducted using biometric models. This first work had the following objectives: i. Quantify direct and indirect effects of primary and secondary components on grain production; ii. Identify variables with greater potential for cultivar selection in the semiarid region of Paraíba and iii. Determine the most appropriate selection strategies for the evaluated variables. The experiment was conducted in an experimental field. The influence of 6 primary and 6 secondary production components was evaluated on grain yield. Data were subjected to ANOVA. Genetic parameters, correlations and path analysis were estimated. Given the strong direct phenotypic and genotypic effects, pod yield results the most promising variable for higher grain yield selection. Direct and simultaneous selections are the most suitable strategies for the set of evaluated variables. However, further studies on selection indices are necessary to maximize genetic gains. Highlights Variables with greater potential were identified for the selection of superior cultivars of cowpea in the semiarid region of Paraíba. The pod yield variable (PP) seems promising for cultivar selection considering higher grain yield (GY).In the semi-arid region of Paraíba, cowpea has low productivity due to irregular rainfall and poor use of production technologies. An extensive study aimed at selecting more productive cultivars was conducted using biometric models. This first work had the following objectives: i. Quantify direct and indirect effects of primary and secondary components on grain production; ii. Identify variables with greater potential for cultivar selection in the semiarid region of Paraíba and iii. Determine the most appropriate selection strategies for the evaluated variables. The experiment was conducted in an experimental field. The influence of 6 primary and 6 secondary production components was evaluated on grain yield. Data were subjected to ANOVA. Genetic parameters, correlations and path analysis were estimated. Given the strong direct phenotypic and genotypic effects, pod yield results the most promising variable for higher grain yield selection. Direct and simultaneous selections are the most suitable strategies for the set of evaluated variables. However, further studies on selection indices are necessary to maximize genetic gains. Highlights Variables with greater potential were identified for the selection of superior cultivars of cowpea in the semiarid region of Paraíba. The pod yield variable (PP) seems promising for cultivar selection considering higher grain yield (GY)

    Desenvolvimento e aceitação sensorial de empanados divertidos de pescado / Development and sensory acceptance of fish empanadas divertis

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    Em função da qualidade nutricional e por produtos com maior conveniência de preparo, e aceitação pelo público infantil e adolescente seguido pela preocupação do Ministério da Pesca e Aquicultura em estimular o consumo de produtos de pescado, este trabalho teve como objetivo a produção de empanado colorido com filé de pescado nas cores verde, vermelho e amarelo, com intuito de chamar a atenção do consumidor e estimulá-lo ao consumo peixe. A análise sensorial foi realizada em escala hedônica que é utilizada para provocar, medir, analisar e interpretar as reações produzidas pelo novo produto, os provadores foram os não treinados, recrutados aleatoriamente e avaliarão a amostra do processado, ou seja, o empanado colorido artificialmente e preparado para o consumo minutos antes de provar. Os provadores expressaram o grau de gostar ou desgostar das amostras em relação à aceitação global, sabor, cor e textura. Ficando a amostra de maior aceitação com 83%

    Diagnóstico brasileiro sobre biodiversidade e serviços ecossistêmicos : sumário para tomadores de decisão

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    A biodiversidade e os ecossistemas são elementos importantes para enfrentar as crises socioeconômicas e ambientais nacionais e globais, uma vez que proporcionam novas oportunidades de desenvolvimento. Incorporar a biodiversidade na vida cotidiana é uma oportunidade de ouro para promover o uso sustentável da biodiversidade e dos serviços ecossistêmicos. A conservação e a restauração da biodiversidade, dos ecossistemas e de seus serviços associados mostram potencial para um novo desenvolvimento social e econômico, como fonte de geração de emprego e renda, redução da pobreza e da desigualdade socioeconômica. A diversidade biológica brasileira também se expressa em sua imensa diversidade cultural, com uma grande variedade de detentores de conhecimento indígenas e tradicionais. Esses povos possuem vasto conhecimento sobre agrobiodiversidade, pesca, manejo do fogo, medicina natural, entre outros de valor comercial, cultural e espiritual. As principais conclusões deste Sumário para Tomadores de Decisão é que as mudanças no uso da terra e as mudanças climáticas tenham sido - e continuarão sendo ao longo deste século - os principais vetores da perda de biodiversidade e serviços ecossistêmicos no país. Intervenções políticas em diferentes níveis (do local ao nacional, do público ao privado) e a aplicação das leis existentes (mecanismos regulatórios e incentivos) são necessárias para promover a mitigação dos impactos negativos sobre a biodiversidade e a perda de serviços ecossistêmicos. O Brasil já possui uma ampla variedade de instrumentos de política e opções de governança socioambiental, bem como compromissos globais (ODS, Metas de Aichi, Acordo de Paris) relacionados à possibilidade de um futuro sustentável. Entretanto, o controle ineficiente da gestão ou a falta de incentivo para cumprir as regras traz riscos para a consolidação do caminho para esse futuro. O país tem instituições fortes e capazes, mas problemas de infraestrutura, processos lentos, medidas ineficazes e conflitos judiciais, sociais e ecológicos impedem a realização de um desempenho eficiente. Há uma falta de comunicação entre a ciência e a sociedade que precisa ser melhorada por meio do estabelecimento de um fluxo efetivo que torne a comunicação inclusiva e representativa, alcançando os tomadores de decisão públicos e privados. Esforços permanentes para integrar essas duas esferas de conhecimento na sociedade são desejáveis para criar confiança entre os formuladores de políticas e os pesquisadores.Biodiversity and ecosystems are important elements for addressing national and global socioeconomic and environmental crises, since they provide new development opportunities, for example, as source of job and income creation, and reduction in poverty and socioeconomic inequity. Brazilian biological diversity is also expressed in its immense cultural diversity, with a great variety of knowledge holders. These peoples possess vast knowledge on agrobiodiversity, fishing, fire management, natural medicine, among others of commercial, cultural and spiritual value. The main conclusions of this Summary for Police Makers is that land use changes and climate changes have been - and will continue to be throughout this century - the main drivers that result in the loss of biodiversity and ecosystem services in the country. Political interventions at different levels (from local to national, from public to private) and the enforcement of existing laws (regulatory mechanisms and incentives) are required to cope with the mitigation of the negative impacts of biodiversity and ecosystem services loss. Brazil has already a wide variety of policy instruments and socioenvironmental governance options, as well as global commitments (ODS, Aich Targets, Paris Agreement) related to the objective of a sustainable future. However, inefficient management control or lack of incentive to comply with the rules pose risks to consolidating the path to this future. The country has strong and capable institutions, but infrastructural problems, slow processes, inefficient measurements and judicial, social and ecological conflicts obstruct a proficient performance. There is a lack of communication between science and society which needs to be improved by establishing an effective flow that makes communication inclusive and representative, reaching public and private decision makers. Permanent efforts to integrate Science and policy knowledges are desirable to build confidence between policy makers and researchers
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