ISEP - Instituto Superior de Engenharia do Porto
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- A 12*(1+|R|/(4m))-speed algorithm for scheduling constrained-deadline sporadic real-time tasks on a multiprocessor comprising m processors where a task may request one of |R| sequentially-reusable shared resourcesPublication . Andersson, Björn; Easwaran, ArvindWe present a 12*(1+|R|/(4m))-speed algorithm for scheduling constrained-deadline sporadic real-time tasks on a multiprocessor comprising m processors where a task may request one of |R| sequentially-reusable shared resources.
- 1º Ciclo de Palestras de Engenharia CivilPublication . Departamento de Engenharia Civil; Lopes, Duarte Barroso; Fontão, Eunice VilaverdeRealizou-se o I Ciclo de Palestras no Departamento de Engenharia Civil do Instituto Superior de Engenharia do Porto, sobre os seguintes temas: Revestimentos em Edifícios - dia 17 de Outubro de 2001 Zonas Costeiras - dia 14 de Novembro de 2001 Betão Reforçado com Fibras - dia 12 de Dezembro de 201 De que resultaram os textos das comunicações agora compilados. Na escolha dos temas considerou-se a sua actualidade e o facto de completarem os assuntos das aulas do curso de Engenharia Civil. No futuro prevê-se a realização de novos ciclos com temas diversos proporcionando a divulgação de conhecimentos e criando um espaço de diálogo com técnicos e investigadores. Não deve deixar de se referir, que estas palestras reflectem o empenho de docentes do DEC na actualização de conhecimentos em áreas científicas de elevado potencial e interesse para uma escola de engenharia de grandes tradições.
- 1º Simpósio Engenharia Civil (SEC2021): Livro de AtasPublication . Ribeiro, Diogo; Portela, Maria da Fátima; Oliveira, Maria Rosário; Santos, Ricardo; Neto, TeresaAbstract O Instituto Superior de Engenharia do Porto, em parceria com as Escolas do Ensino Superior Universitário e Politécnico, organizou o 1º Simpósio de Engenharia Civil (SEC 2021), que decorreu no dia 19 de maio de 2021, em formato híbrido. O evento teve como principal objetivo a apresentação dos resultados dos trabalhos académicos de final de curso dos estudantes de Licenciaturas e Mestrados em Engenharia Civil, realizados no período entre 2018 e 2020. Além disso, pretendeu-se incentivar a troca de experiências, reflexão e discussão entre estudantes finalistas/recém-diplomados e as entidades empregadoras. Pretendeu-se ainda com este evento promover uma forte mobilização e participação de estudantes na área da Engenharia Civil de todas as Escolas do Ensino Superior Universitário e Politécnico, e deste modo, dar visibilidade aos melhores trabalhos desenvolvidos em ambiente académico ou por meio de parcerias entre a academia e a indústria. Possibilitou-se aos representantes das empresas conhecer de perto os trabalhos desenvolvidos no âmbito dos 1º e 2º ciclos de estudos de Engenharia Civil. No programa do evento participaram dois oradores convidados, com vasta experiência académica e de investigação em domínios da Engenharia Civil, um do lado da academia e outro do lado das empresas. Estes oradores partilharam a sua visão acerca das inovações e tecnologias emergentes nos seus domínios de conhecimento e que no futuro poderão ter impacto nas atividades dos profissionais de Engenharia Civil. No evento estiveram presentes 28 Escolas de Engenharia de Portugal, representadas por 32 membros que constituíram a Comissão Organizadora e 28 membros que integraram a Comissão Científica.
- 2-echelon lastmile delivery with lockers and occasional couriersPublication . Santos, André Gustavo dos; Viana, Ana; Pedroso, João PedroWe propose a new approach for the lastmile delivery problem where, besides serving as collecting points of orders for customers, parcel lockers are also used as transshipment nodes in a 2-echelon delivery system. Moreover, we consider that a customer (occasional courier) visiting a locker may accept a compensation to make a delivery to another customer on their regular traveling path. The proposed shared use of the locker facilities – by customers that prefer to self-pick up their orders, and also as a transfer deposit for customers that prefer home delivery – will contribute to better usage of an already available storage capacity. Furthermore, the use of occasional couriers (OCs) brings an extra layer of flexibility to the delivery process and may positively contribute to achieving some environmental goals: although non-consolidation of deliveries may, at first sight, seem negative, by only considering OCs that would go to the locker independently of making or not a delivery on their way home, and their selection being constrained by a maximum detour, the carbon footprint can be potentially reduced when compared to that of dedicated vehicles. We present a mixed-integer linear programming formulation for the problem that integrates three delivery options – depot to locker, depot to locker followed by final delivery by a professional fleet, and depot to locker followed by final delivery by an OC. Furthermore, to assess the impact of OCs’ no show on the delivery process, we extend the formulation to re-schedule the delivery of previous undelivered parcels, and analyze the impact of different no-show rates. Thorough computational experiments show that the use of OCs has a positive impact both on the delivery cost and on the total distance traveled by the dedicated fleets. Experiments also show that the negative impact of no-shows may be reduced by using lockers with higher capacities.
- 2017 IEEE competition on modern heuristic optimizers for smart grid operation: Testbeds and resultsPublication . Lezama, Fernando; Soares, João; Vale, Zita; Rueda, Jose; Rivera, Sergio; Elrich, IstvánThis paper summarizes the two testbeds, datasets, and results of the IEEE PES Working Group on Modern Heuristic Optimization (WGMHO) 2017 Competition on Smart Grid Operation Problems. The competition is organized with the aim of closing the gap between theory and real-world applications of evolutionary computation. Testbed 1 considers stochastic OPF (Optimal Power Flow) based Active-Reactive Power Dispatch (ARPD) under uncertainty and Testbed 2 large-scale optimal scheduling of distributed energy resources. Classical optimization methods are not able to deal with the proposed optimization problems within a reasonable time, often requiring more than one day to provide the optimal solution and a significant amount of memory to perform the computation. The proposed problems can be addressed using modern heuristic optimization approaches, enabling the achievement of good solutions in much lower execution times, adequate for the envisaged decision-making processes. Results from the competition show that metaheuristics can be successfully applied in search of efficient near-optimal solutions for the Stochastic Optimal Power Flow and large-scale energy resource management problems.
- A 2020 perspective on “Online guest profiling and hotel recommendation”Publication . Veloso, Bruno M.; Leal, Fátima; Malheiro, Benedita; Burguillo, Juan CarlosTourism crowdsourcing platforms accumulate and use large volumes of feedback data on tourism-related services to provide personalized recommendations with high impact on future tourist behavior. Typically, these recommendation engines build individual tourist profiles and suggest hotels, restaurants, attractions or routes based on the shared ratings, reviews, photos, videos or likes. Due to the dynamic nature of this scenario, where the crowd produces a continuous stream of events, we have been exploring stream-based recommendation methods, using stochastic gradient descent (SGD), to incrementally update the prediction models and post-filters to reduce the search space and improve the recommendation accuracy. In this context, we offer an update and comment on our previous article (Veloso et al., 2019a) by providing a recent literature review and identifying the challenges laying ahead concerning the online recommendation of tourism resources supported by crowdsourced data.
- A 2020 perspective on “Scalable modelling and recommendation using wiki-based crowdsourced repositories:” Fairness, scalability, and real-time recommendationPublication . Leal, Fátima; Veloso, Bruno; Malheiro, Benedita; González-Vélez, Horacio; Carlos Burguillo, JuanWiki-based crowdsourced data sources generally lack reliability, as their provenance is not intrinsically marshalled. By using recommendation, one may arguably assess the reliability of wiki-based repositories in order to identify the most interesting articles for a given domain. In this commentary, we explore current trends in scalable modelling and recommendation methods based on side information such as the quality and popularity of wiki articles. The systematic parallelization of such profiling and recommendation algorithms allows the concurrent processing of distributed crowdsourced Wikidata repositories. These algorithms, which perform incremental updating, need further research to improve the performance and generate up-to-date high-quality recommendations. This article builds upon our previous work (Leal et al., 2019) by extending the literature review and identifying important trends and challenges pertaining to crowdsourcing platforms, particularly those of Wikidata provenance.
- 2022 - O contexto atual das ITED/ITURPublication . Duarte, Jorge Manuel FerreiraNo ano de 2005, começou a obrigatoriedade de qualquer edifício ter uma infraestrutura ITED (Infraestrutura de Telecomunicações em Edifícios), quer seja na sua construção ou reconstrução. O ponto principal na elaboração do manual na sua primeira edição era de juntar a rede de pares de cobre com a rede de cabo coaxial e de fibra ótica. Por outro, dotar a nível de infraestruturas, mais concretamente a rede tubagens, para a entrada de vários operadores aos clientes, de forma que as infraestruturas não fossem o problema. Notar que, um dos objetivos principais, era que houvesse livre concorrência entre operadores e não houvesse barreiras físicas no fornecimento de serviços aos seus clientes.
- 21st Century Challenges in Engineering and Technological learningPublication . Viegas, Clara; Marques, Arcelina; Alves, Gustavo R.The success of 21st century engineers1 depends on demanding challenges, involving a large scope of scientific and social competences. College education must help students to develop those competences in collaborative environments and better address these needs. Developing students’ knowledge and skills in contextualized engineering environments, practicing teamwork, leadership, decision-making, experimental work and critical thinking are some of the important aspects addressed in this track.
- 21st century quality: Looking into the “Crystal ball”Publication . Fonseca, Luís Miguel CiravegnaThe discussion of possible scenarios for the future of Quality is on the priority list of major Quality Practitioners Societies. EOQ – European Organization for Quality (EOQ, 2014) main team for its 58th EOQ-Congress held June 2014 in Göteborg was “Managing Challenges in Quality Leadership” and ASQ - American Society for Quality (ASQ, 2015) appointed “the Future of Quality” for Quality Progress Magazine November 2015 issue. In addition, the ISO 9001:2008 revision process carried by ISO/TC 176 aims to assure that ISO 9001:2015 International Standard remains stable for the next 10 years (ISO, 2014) contributing to an increased discussion on the future of quality. The purpose of this research is to review available Quality Management approaches and outline, adding an academic perspective, expected developments for Quality within the 21st Century. This paper follows a qualitative approach, although data from international organizations is used. A literature review has been undertaken on quality management past and potential future trends. Based on these findings a model is proposed for organization quality management development and propositions for the future of quality management are advanced. Firstly, a state of the art of existing Quality Management approaches is presented, for example, like Total Quality Management (TQM) and Quality Gurus, ISO 9000 International Standards Series (with an outline of the expected changes for ISO 9001:2015), Six Sigma and Business Excellence Models.Secondly, building on theoretical and managerial approaches, a two dimensional matrix – Quality Engineering (QE - technical aspects of quality) and Quality Management (QM: soft aspects of quality) - is presented, outlining five proposed characterizations of Quality maturity levels and giving insights for applications and future developments. Literature review highlights that QM and QE may be addressing similar quality issues but their approaches are different in terms of scope breadth and intensity and they ought to complement and reciprocally reinforce one another. The challenges organizations face within the 21st century have stronger uncertainty, complexity, and differentiation. Two main propositions are advanced as relevant for 21st Century Quality: - QM importance for the sustainable success of organizations will increase and they should be aware of the larger ecosystem to be managed for improvement, possibly leading to the emergence of a new Quality paradigm, The Civilizacional Excellence paradigm. - QE should get more attention from QM and the Quality professionals will have to: a) Master and apply in wider contexts and in additional depth the Quality Tools (basic, intermediate and advanced); b) Have the soft skills needed for its success; c) Be results oriented and better understand and demonstrate the relationships between approaches and results These propositions challenge both scholars and practitioners for a sustained and supported discussion on the future of Quality. “All things are ready, if our mind be so.” (Shakespeare, Henry V, circa 1599).