16,428 research outputs found

    Anu√°rio cient√≠fico da Escola Superior de Tecnologia da Sa√ļde de Lisboa - 2021

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    √Č com grande prazer que apresentamos a mais recente edi√ß√£o (a 11.¬™) do Anu√°rio Cient√≠fico da Escola Superior de Tecnologia da Sa√ļde de Lisboa. Como institui√ß√£o de ensino superior, temos o compromisso de promover e incentivar a pesquisa cient√≠fica em todas as √°reas do conhecimento que contemplam a nossa miss√£o. Esta publica√ß√£o tem como objetivo divulgar toda a produ√ß√£o cient√≠fica desenvolvida pelos Professores, Investigadores, Estudantes e Pessoal n√£o Docente da ESTeSL durante 2021. Este Anu√°rio √©, assim, o reflexo do trabalho √°rduo e dedicado da nossa comunidade, que se empenhou na produ√ß√£o de conte√ļdo cient√≠fico de elevada qualidade e partilhada com a Sociedade na forma de livros, cap√≠tulos de livros, artigos publicados em revistas nacionais e internacionais, resumos de comunica√ß√Ķes orais e p√≥steres, bem como resultado dos trabalhos de 1¬ļ e 2¬ļ ciclo. Com isto, o conte√ļdo desta publica√ß√£o abrange uma ampla variedade de t√≥picos, desde temas mais fundamentais at√© estudos de aplica√ß√£o pr√°tica em contextos espec√≠ficos de Sa√ļde, refletindo desta forma a pluralidade e diversidade de √°reas que definem, e tornam √ļnica, a ESTeSL. Acreditamos que a investiga√ß√£o e pesquisa cient√≠fica √© um eixo fundamental para o desenvolvimento da sociedade e √© por isso que incentivamos os nossos estudantes a envolverem-se em atividades de pesquisa e pr√°tica baseada na evid√™ncia desde o in√≠cio dos seus estudos na ESTeSL. Esta publica√ß√£o √© um exemplo do sucesso desses esfor√ßos, sendo a maior de sempre, o que faz com que estejamos muito orgulhosos em partilhar os resultados e descobertas dos nossos investigadores com a comunidade cient√≠fica e o p√ļblico em geral. Esperamos que este Anu√°rio inspire e motive outros estudantes, profissionais de sa√ļde, professores e outros colaboradores a continuarem a explorar novas ideias e contribuir para o avan√ßo da ci√™ncia e da tecnologia no corpo de conhecimento pr√≥prio das √°reas que comp√Ķe a ESTeSL. Agradecemos a todos os envolvidos na produ√ß√£o deste anu√°rio e desejamos uma leitura inspiradora e agrad√°vel.info:eu-repo/semantics/publishedVersio

    Bridging technology and educational psychology: an exploration of individual differences in technology-assisted language learning within an Algerian EFL setting

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    The implementation of technology in language learning and teaching has a great influence onthe teaching and learning process as a whole and its impact on the learners’ psychological state seems of paramount significance, since it could be either an aid or a barrier to students’ academic performance. This thesis therefore explores individual learner differences in technology-assisted language learning (TALL) and when using educational technologies in higher education within an Algerian English as a Foreign Language (EFL) setting. Although I initially intended to investigate the relationship between TALL and certain affective variables mainly motivation, anxiety, self-confidence, and learning styles inside the classroom, the collection and analysis of data shifted my focus to a holistic view of individual learner differences in TALL environments and when using educational technologies within and beyond the classroom. In an attempt to bridge technology and educational psychology, this ethnographic case study considers the nature of the impact of technology integration in language teaching and learning on the psychology of individual language learners inside and outside the classroom. The study considers the reality constructed by participants and reveals multiple and distinctive views about the relationship between the use of educational technologies in higher education and individual learner differences. It took place in a university in the north-west of Algeria and involved 27 main and secondary student and teacher participants. It consisted of focus-group discussions, follow-up discussions, teachers’ interviews, learners’ diaries, observation, and field notes. It was initially conducted within the classroom but gradually expanded to other settings outside the classroom depending on the availability of participants, their actions, and activities. The study indicates that the impact of technology integration in EFL learning on individual learner differences is both complex and dynamic. It is complex in the sense that it is shown in multiple aspects and reflected on the students and their differences. In addition to various positive and different negative influences of different technology uses and the different psychological reactions among students to the same technology scenario, the study reveals the unrecognised different manifestations of similar psychological traits in the same ELT technology scenario. It is also dynamic since it is characterised by constant change according to contextual approaches to and practical realities of technology integration in language teaching and learning in the setting, including discrepancies between students’ attitudes and teacher’ actions, mismatches between technological experiences inside and outside the classroom, local concerns and generalised beliefs about TALL in the context, and the rapid and unplanned shift to online educational delivery during the Covid-19 pandemic situation. The study may therefore be of interest, not only to Algerian teachers and students, but also to academics and institutions in other contexts through considering the complex and dynamic impact of TALL and technology integration at higher education on individual differences, and to academics in similar low-resource contexts by undertaking a context approach to technology integration

    Potential of Carotenoids from Fresh Tomatoes and Their Availability in Processed Tomato-Based Products

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    The high consumption of tomatoes worldwide has made them an essential source of health-promoting carotenoids that prevent a variety of chronic degenerative diseases, such as diabetes, high blood pressure, and cardiovascular disease. Tomatoes are available year-round, consumed fresh, and used as a raw material for the production of many processed products, such as juices, pastes, and purees. A plethora of carotenoids has been characterized in tomatoes. Most of the relevant carotenoids in the human bloodstream are supplied by fresh and processed tomatoes. Lycopene is the predominant carotenoid in tomato and tomato-based food products. Other carotenoids such as őĪ-, ő≤-, ő≥- and őĺ-carotene, phytoene, phytofluene, neurosporene, and lutein are present in tomatoes and related products. There is a growing body of evidence that these bioactive compounds possess beneficial properties, namely anticarcinogenic, cardioprotective, and hepatoprotective effects among other health benefits, due to their antioxidant, anti-mutagenic, anti-proliferative, anti-inflammatory, and anti-atherogenic properties. This chapter analyzes the carotenoid composition of tomatoes and their based products as major contributors to the chronic disease-preventive properties

    Application of lactic acid bacteria for the biopreservation of meat products: A systematic review

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    .The increasing concern of consumers about food quality and safety and their rejection of chemical additives has promoted the breakthrough of the biopreservation field and the development of studies on the use of beneficial bacteria and their metabolites as potential natural antimicrobials for shelf life extension and enhanced food safety. Control of foodborne pathogens in meat and meat products represents a serious challenge for the food industry which can be addressed through the intelligent use of bio-compounds or biopreservatives. This article aims to systematically review the available knowledge about biological strategies based on the use of lactic acid bacteria to control the proliferation of undesirable microorganisms in different meat products. The outcome of the literature search evidenced the potential of several strains of lactic acid bacteria and their purified or semi-purified antimicrobial metabolites as biopreservatives in meat products for achieving longer shelf life or inhibiting spoilage and pathogenic bacteria, especially when combined with other technologies to achieve a synergistic effect.S

    Building body identities - exploring the world of female bodybuilders

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    This thesis explores how female bodybuilders seek to develop and maintain a viable sense of self despite being stigmatized by the gendered foundations of what Erving Goffman (1983) refers to as the 'interaction order'; the unavoidable presentational context in which identities are forged during the course of social life. Placed in the context of an overview of the historical treatment of women's bodies, and a concern with the development of bodybuilding as a specific form of body modification, the research draws upon a unique two year ethnographic study based in the South of England, complemented by interviews with twenty-six female bodybuilders, all of whom live in the U.K. By mapping these extraordinary women's lives, the research illuminates the pivotal spaces and essential lived experiences that make up the female bodybuilder. Whilst the women appear to be embarking on an 'empowering' radical body project for themselves, the consequences of their activity remains culturally ambivalent. This research exposes the 'Janus-faced' nature of female bodybuilding, exploring the ways in which the women negotiate, accommodate and resist pressures to engage in more orthodox and feminine activities and appearances

    Foundations for programming and implementing effect handlers

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    First-class control operators provide programmers with an expressive and efficient means for manipulating control through reification of the current control state as a first-class object, enabling programmers to implement their own computational effects and control idioms as shareable libraries. Effect handlers provide a particularly structured approach to programming with first-class control by naming control reifying operations and separating from their handling. This thesis is composed of three strands of work in which I develop operational foundations for programming and implementing effect handlers as well as exploring the expressive power of effect handlers. The first strand develops a fine-grain call-by-value core calculus of a statically typed programming language with a structural notion of effect types, as opposed to the nominal notion of effect types that dominates the literature. With the structural approach, effects need not be declared before use. The usual safety properties of statically typed programming are retained by making crucial use of row polymorphism to build and track effect signatures. The calculus features three forms of handlers: deep, shallow, and parameterised. They each offer a different approach to manipulate the control state of programs. Traditional deep handlers are defined by folds over computation trees, and are the original con-struct proposed by Plotkin and Pretnar. Shallow handlers are defined by case splits (rather than folds) over computation trees. Parameterised handlers are deep handlers extended with a state value that is threaded through the folds over computation trees. To demonstrate the usefulness of effects and handlers as a practical programming abstraction I implement the essence of a small UNIX-style operating system complete with multi-user environment, time-sharing, and file I/O. The second strand studies continuation passing style (CPS) and abstract machine semantics, which are foundational techniques that admit a unified basis for implementing deep, shallow, and parameterised effect handlers in the same environment. The CPS translation is obtained through a series of refinements of a basic first-order CPS translation for a fine-grain call-by-value language into an untyped language. Each refinement moves toward a more intensional representation of continuations eventually arriving at the notion of generalised continuation, which admit simultaneous support for deep, shallow, and parameterised handlers. The initial refinement adds support for deep handlers by representing stacks of continuations and handlers as a curried sequence of arguments. The image of the resulting translation is not properly tail-recursive, meaning some function application terms do not appear in tail position. To rectify this the CPS translation is refined once more to obtain an uncurried representation of stacks of continuations and handlers. Finally, the translation is made higher-order in order to contract administrative redexes at translation time. The generalised continuation representation is used to construct an abstract machine that provide simultaneous support for deep, shallow, and parameterised effect handlers. kinds of effect handlers. The third strand explores the expressiveness of effect handlers. First, I show that deep, shallow, and parameterised notions of handlers are interdefinable by way of typed macro-expressiveness, which provides a syntactic notion of expressiveness that affirms the existence of encodings between handlers, but it provides no information about the computational content of the encodings. Second, using the semantic notion of expressiveness I show that for a class of programs a programming language with first-class control (e.g. effect handlers) admits asymptotically faster implementations than possible in a language without first-class control

    Freelance subtitlers in a subtitle production network in the OTT industry in Thailand: a longitudinal study

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    The present study sets out to investigate a subtitle production network in the over-the-top (OTT) industry in Thailand through the perspective of freelance subtitlers. A qualitative longitudinal research design was adopted to gain insights into (1) the way the work practices of freelance subtitlers are influenced by both human and non-human actors in the network, (2) the evolution of the network, and (3) how the freelance subtitlers’ perception of quality is influenced by changes occurring in the network. Eleven subtitlers were interviewed every six months over a period of two years, contributing to over 60 hours of interview data. The data analysis was informed by selected concepts from Actor-Network Theory (ANT) (Law 1992, 2009; Latour 1996, 2005; Mol 2010), and complemented by the three-dimensional quality model proposed by Abdallah (2016, 2017). Reflexive thematic analysis (Braun and Clarke 2019a, 2020b) was used to generate themes and sub-themes which address the research questions and tell compelling stories about the actor-network. It was found that from July 2017 to September 2019, the subtitle production network, which was sustained by complex interrelationships between actors, underwent a number of changes. The changes affected the work practices of freelance subtitlers in a more negative than positive way, demonstrating their precarious position in an industry that has widely adopted the vendor model (Moorkens 2017). Moreover, as perceived by the research participants, under increasingly undesirable working conditions, it became more challenging to maintain a quality process and to produce quality subtitles. Finally, translation technology and tools, including machine translation, were found to be key non-human actors that catalyse the changes in the network under study
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