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    Sonae (Portugal)

    企业EST. 1959
    7论文总数
    24引用总数

    论文量&引用量时间轴

    机构学者

    论文(7)

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    1Hourly Discharge Modelling and Forecast for a Run-of-river Dam
    Joana Seabra-Silva, Paula Milheiro-Oliveira, Paulo Avilez-Valente

    Water resources have become a growing concern in society. This is largely due to the scarcity of this natural asset and the realisation that increasing demand could lead to future conflicts. Sometimes, human action limits access to water or alters natural flows. Run-of-river hydropower schemes manage river flows on a short-term basis, altering the natural flow of rivers according to the energy needs of consumers or the risk of flooding. The aim of this work is to show how to model and predict the hourly flow in a run-of-river reservoir, using the Crestuma-Lever dam on the river Douro (Portugal) as a case study. Data collected from 1998 to 2020 will be used. The study focuses on the use of time series models capable of dealing with multiple periodicities, such as the TBATS model. The findings show that the model can be used for 48-hour to weekly forecasting. In general, it captures the large fluctuations in the turbine discharges and most peak discharges. However, it does not capture most zeros and has difficulty in dealing with low flow values. The results of the time-series model are also compared with those obtained using three machine learning algorithms: the Seasonal Naïve, the Neural Network, and the Random Forest.

    2025WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT(2025)
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    2Augmented Reality Towards Industry 5.0: Improving Voice and Tap Interaction Based on User Experience Feedback
    Alexandre Carrança, Nuno Sousa,José Rocha, Eduardo Santos, Luis Evangelista, António Ferreira,Telmo Adão,Emanuel Sousa,Iara Margolis

    EXtended Reality (XR) has numerous applications in industrial contexts, including to assist in activities such as preventive maintenance and/or reactive interventions in machinery, wherein time-effectiveness is required to mitigate the costs of inactive production lines or the need to subcontract specialized technicians to perform those operations. However, developing an Augmented Reality (AR) application capable of being user-friendly and truly serviceable for aiding in the referred context requires keeping in mind human factors as key aspects and, as such, interaction must be a concern to address, namely, considering user feedback. Therefore, starting from a previous AR system oriented to industrial interventions that was developed and assessed with users and considering the feedback of the participant, the duly alterations were done and a new test was conducted, with a total of 27 participants, divided into 2 groups: 11 users who participated in the first experience and 16 general users who had never contacted with the solution before. A qualitative improvement in the user experience was noticed from the questionnaires feedback. Points such as fluidity, responsiveness, ease, speed, and intuitiveness were highlighted. Voice commands matched the tap commands in terms of user preferences.

    2023Progressive and Integrative Ideas and Applications of Engineering Systems Under the Framework of IOT...(2023)引用:1
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    3Overall LL Implementation Plan and Management (I)
    Marina Laskari, Gerasimos Kouloumbis, A. El Saer, Maria Tyrni, Laurence Marzell, S. D. Wall, Philip Crowe, Oliver Kinnane, Páraic Carroll, Ronan Herron, Keith Cotter, Rafael Sanchez Villardon,
    2022Zenodo (CERN European Organization for Nuclear Research)(2022)
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    4Implementation of ISO19650 based framework for asset management in logistics centres for a major food retailer
    Ibironke Regina Adegun,José Luís Duarte Granja,Miguel Azenha, Bruna Leite
    2022Zenodo (CERN European Organization for Nuclear Research)(2022)
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    5QUE PAPEL PARA O CONSENTIMENTO NA SOCIEDADE EM REDE
    João Fachana

    Palavras-Chave Dados Pessoais; Consentimento do titular de dados; Proposta de Regulamento da Protecao de Dados Pessoais Objetivos O presente paper pretende efetuar uma analise da figura legal do consentimento do titular de dados pessoais enquanto pressuposto fundamental para a generalidade do tratamento de dados pessoais e de aspetos criticos da sua aplicacao no mundo digital. Abordaremos a forma como o consentimento e aplicado, na pratica, na realidade digital, tomando como base o modelo tradicional adotado com as “politicas de privacidade” e o uso de cookies , procurando, igualmente, verificar a forma como o consentimento pode ser obtido (ou ignorado) face aos novos modelos de negocio digitais que estao a surgir: paywalls; e-marketing ; data brokerage ; big data; internet of things . Metodologia Pretende-se apresentar, num primeiro momento, um enquadramento geral da figura legal do consentimento do titular de dados pessoais no ordenamento juridico e a sua aplicacao as novas realidades digitais. Determinar-se-ao situacoes em que a legislacao vigente nao e suficiente para esclarecer/resolver problemas especificos e procura-se apresentar vias de solucao. Num segundo momento, analisar-se-a a nova proposta de regulamento da Uniao Europeia sobre o tratamento de dados pessoais, questionando se esta sera suficiente para resolver os problemas identificados. Em todo o trabalho tentaremos dar uma visao transnacional da problematica, procurando aferir, igualmente, as diferencas na aproximacao a estes problemas feita pela Uniao Europeia e pelos Estados Unidos da America. Resultados Principais Pretende-se a discussao e consciencializacao dos problemas que as novas realidades digitais trazem para a protecao de dados pessoais, nomeadamente no caso especifico do consentimento do respetivo titular de dados, bem como a necessidade de uma maior flexibilizacao do termo juridico, de forma a poder concilia-lo com novos modelos de negocio (e negocios em si mesmos) que estao a surgir. Conclusoes A figura do consentimento mantem e devera manter-se como pedra basilar e pressuposto geral do tratamento de dados pessoais. Nao obstante, as novas realidades digitais apontam para uma necessidade de flexibilizar as formas admissiveis de consentimento, para alem do tradicional consentimento escrito – o consentimento por uso do servico ou consentimento tacito. A proposta de regulamento ajuda a adaptar a figura legal do consentimento para a nova realidade do digital “em rede”, embora nao seja ainda suficiente. Entendemos que, mais do que garantir a existencia de um efetivo consentimento, o reforco da protecao de dados se fara, ao inves, pela via das exigencias de compliance por parte das entidades responsaveis pelo tratamento e suas subcontratadas, bem como pelo reforco das competencias inspetivas/sancionatorias das respetivas autoridades nacionais de protecao de dados. Nesse sentido, a possibilidade ja prevista de criacao de uma autoridade europeia nesta materia e, a nosso ver, muito bem-vinda.

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    合作机构(10)

    米尼奥大学合作论文 2
    Calorx Teachers' University合作论文 1
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    Dienstleistungszentrum Ländlicher Raum合作论文 1
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    Centro de Computação Gráfica合作论文 1
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