ISEP – DEE – Comunicações em eventos científicos
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- Segundas jornadas científicas do ISEP 2000-2001Publication . Instituto Superior de Engenharia do Porto; Pinto, Maria Leonor MadureiraA realização das Primeiras Jornadas Científicas do ISEP, em Setembro de 1999, permitiu que a Escola tivesse um primeiro contacto com o tipo de investigação científica em que docentes dos vários Departamentos se encontravam empenhados, essencialmente no âmbito da sua valorização científica e tecnológica. A grande maioria desses docentes encontrava-se então a frequentar ou mesmo terminar Doutoramento ou Mestrado, com o apoio possível e o incentivo da Escola. De facto, reconhecendo que a formação avançada de recursos humanos, nomeadamente ao nível de Doutoramento, constitui um dos alicerces da política de integração da Escola no Ensino Superior e nas redes de I&D nacionais, o ISEP ao nível dos seus Órgãos de Gestão e Departamentos, procurou desde sempre incentivar a formação dos seus docentes. Apraz-me portante verificar, decorridos que são praticamente dois anos sobre as Ias Jornadas, um crescente envolvimento e empenhamento dos docentes na sua formação e/ou actualização em áreas científicas de grande actualidade e interesse para uma Escola de Engenharia. Simultaneamente, verifica-se um incremento notável das actividades de Investigação praticadas nos Centros do ISEP, o que se traduz num potencial científico e tecnológico já apreciável. Apesar de, por força de lei, as Escolas do Ensino Superior Politécnico estarem impedidas de leccionar cursos de pós-graduação é crescente o número de docentes do ISEP que conduzem os seus trabalhos de investigação com vista a doutoramento nos Centros de Investigação do ISEP e sob a supervisão de docentes doutorados, também da Escola. Nestas circunstâncias, para além da "obrigatória" parceria com a Universidade começa a procurar-se incrementar as ligações ao mundo empresarial começando a desenvolver-se no ISEP trabalhos de doutoramento também com o interesse e a comparticipação da indústria. Não deve deixar de se referir, ainda, que estas Jornadas reflectem o empenhamento dos diversos Departamentos na formação e actualização dos seus docentes em áreas científicas de elevado potencial e interesse para uma Escola de Engenharia de grandes tradições como é o ISEP, visando sobretudo um ensino de qualidade crescente. Resta-me desejar que estas Segundas Jornadas Científicas do ISEP sejam profícuas e incentivadoras quer de futuros trabalhos de valorização docente quer do desenvolvimento da Investigação Científica efectuada nesta Escola.
- The atrial resting potential distribution within a fibrotic zone and its effects on the conduction on non-fibrotic zones: A simulation studyPublication . Ugarte, Juan; Tobón, Catalina; Mendes Lopes, Antonio; Machado, J. A. TenreiroAtrial fibrillation (AF) is a heart condition commonly diagnosed within the clinical praxis. During an AF episode, rapid and irregular heartbeats are present and they underly a complex electrical activity. It is known that the atrial structural alterations play a role in establishing the fibrillatory propagation patterns. However, the specific mechanisms are not fully understood. Fibrosis is a hallmark of AF and it represents structural abnormalities that disturbs the atrial electrical conduction. In this work, the behavior of the cardiomyocytes resting action potential in a fibrotic tissue, under distinct textures, is studied. A computational model of atrial electrophysiology is implemented. For the fibrosis model, spatial complex-order derivatives are used. Several values for the derivative order are tested in order to generate different degrees of structural complexity. The fibrosis model also includes cellular heterogeneity through the presence of fibroblasts coupled to cardiomyocytes. Diffuse, interstitial and compact fibrosis textures are implemented in a 2D domain and the amount of fibrosis is varied. The distribution of the resting potential is assessed using the Shannon entropy and the tissue is stimulated in order to evaluate the conduction velocity. The results indicate that, the distinct fibrosis structural conditions generate a wide range of resting potential distributions: from normal to heavy-tailed. The entropy values indicate the changes in the resting potential distribution when the structural complexity varies. Such analysis evinced that the amount of fibrosis generates specific entropy curves respect the derivative order. Moreover, the conduction velocity outside the fibrotic area is affected by the fibrotic configuration, which evinces the long-range effect of the fractional derivative operator and agrees with experimental observations. These results suggest that the proposed complex-order model can be useful for modeling fibrosis during atrial fibrillation and the entropy approach allows characterizing the wide range of fibrillatory scenarios under distinct fibrosis configurations.
- Didactic bench to support automation learning - Industry 4.0 educationPublication . Pereira, Filipe; Lopes, Rogerio; Sarmento, Ruben; Felgueiras, CarlosThe teaching of automation is increasingly present in the industry, through increasingly aggregating and complete platforms. Automation teaching/learning faces several limitations. On the one hand, teaching automation using automata is done in laboratories whose didactic applications rarely replicate industrial applications. On the other hand, students' difficulties in accessing these spaces are often limited to the time allocated to each laboratory class, and it is often not possible to repeat assignments or work variants. It should be noted that the difficulty of accessibility for working students or students with COVID restrictions has a lot of impact. Thus, it would be important for a student to have access to an automation bench that replicates the needs of the industry and that includes remote access. The present work presents the development of a didactic workbench to support the teaching / learning of automation, with an industrial design and with the possibility of remote access.
- Hardware Test subjects in academic educationPublication . Sarmento, Ruben; Pereira, Filipe; Felgueiras, CarlosNo electronic product can be manufactured without an underlying test strategy, as this operation can assume 90 % of the overall cost of the product. This paper explores the need for testing in the context of electronic hardware development and production, and how its absence from normal university curriculums is affecting its presence during the design of industry-developed hardware. Testing strategies are discussed and an example is presented to explain the advantages of test development. An analysis is done at several random universities in order to try to understand and bring to light how such an important step in the development of a circuit is not present in the learned skill set of a newly graduated hardware development engineer.
- Preliminary Tests with Screen-Printed Piezoresistive Pressure Sensors on PET and Textile SubstratesPublication . Martins, Pedro; Silva, Carolina; Oliveira, Juliana; Marques, Maria ArcelinaThe search for more practical and economically advantageous solutions to produce flexible and printable pressure sensors, is giving rise to new approaches with promising results. The production of conductive and piezoresistive inks for application on flexible and stretchable substrates is a sign of this evolution. In this paper, we propose to analyze the results of some calibration tests, performed with pressure-sensitive piezoresistive sensors screen-printed on PET and textile substrates. The results showed that these sensors generally follow a trend with a strong approximation to the linear model. The textile sensor is the most linear (R 2 = 0.99), and PET sensor (S1) has a higher sensitivity (40.4 mV/kPa) than the other sensors. Results obtained are, in general, within the expected behavior for the piezoresistive ink used and allowed for comparing between sensors printed in PET and textile substrates. A positive factor to consider lies in the possibility of using the screen-printing technology on different substrates, preferably in textile fabric.
- Impact of COVID-19 pandemic to EDUCON: a bibliometric analysisPublication . Silva, Mariana Miguel; Costa, Alexandra R.; Moura, Ana; Alves, Gustavo R.In recent years, bibliometrics has been widely used as a methodology for the analysis of scientific production, proving to be an excellent instrument for supporting scientific policy decisions. In this paper, we present a bibliometric analysis of the 12 editions of the Global Engineering Education Conference (EDUCON). Several indicators were used, namely number of submitted articles, the rate of accepted submissions, number of article citations, and the number of references per article, among other indicators. We also intend to add the comparison of the results obtained in the ten first editions held in-site and the last two editions, which have the particularity of having been carried out fully online, evaluating, by this way, the impact of the COVID-19 pandemic crisis to EDUCON. The results show an increase in the number of papers submitted and published over the years, evidencing a growing notoriety of the conference. The same growth tendency is visible regarding the number of authors involved in the conference. Regarding the impact of the online editions, data from the next edition is still required to establish better comparisons and conclusions.
- Taguchi method application in the pilot production phase-a case studyPublication . Pereira, A.I.; Martins, E.C.; Lopes, ManuelThis work comes at the product and process development stage in a medical device company, namely the bone substitute. The production of bone substitutes has high regulatory requirements, also the consumer of these products has high-quality requirements. In the pilot production phase, a quality problem was detected in the bone substitute blocks. The work presented was developed in a real context requiring an understanding of the production process and the product. Through a multidisciplinary analysis allowed to direct the problem to the impregnation process. The study of the impregnation process was developed according to the DOE through the Taguchi method. For the experiment, six factors and one interaction allocated in an L8 array were identified. Results obtained show that the process variability is clearly superior to the effect of the studied factors. For future work, the removal of non-significant factors is recommended, adding new factors not included in the study.
- Evaluation of potential tidal impoundment energy systems in Ria de Aveiro, PortugalPublication . Rocha, João; Abreu, Tiago; Felgueiras, CarlosThe shelving of the seabed and funneling of the water by the estuaries is favorable for tidal impoundment technologies. In this work, the estimation of the tidal potential energy for Ria de Aveiro lagoon was achieved through the application of a model developed in the Delft3D software. This software can reproduce the hydrodynamics of this complex system and simulations were run to identify hot spots to retrieve gravitational potential energy. For the selected places, both power and annual energy were calculated. It was concluded that the tidal energy that can be extracted from Ria de Aveiro is considerable, justifying further studies to consider the accommodation of some type of tidal exploitation, in the foreseeable future.
- Minimal time delivery of multiple robotsPublication . Aguiar, Miguel; Silva, Jorge; Sousa, Joao Borges deConsider a set of autonomous vehicles, each one with a preassigned task to start at a given region. Due to energy constraints, and in order to minimize the overall task completion time, these vehicles are deployed from a faster carrier vehicle. This paper develops a dynamic programming (DP) based solution for the problem of finding the optimal deployment location and time for each vehicle, and for a given sequence of deployments, so that the global mission duration is minimal. The problem is specialized for ocean-going vehicles operating under time-varying currents. The solution approach involves solving a sequence of optimal stopping problems that are transformed into a set variational inequalities through the application of the dynamic programming principle (DPP). The optimal trajectory for the carrier and the optimal deployment location and time for each vehicle to be deployed are obtained in feedback-form from the numerical solution of the variational inequalities. The solution is computed with our open source parallel implementation of the fast sweeping method. The approach is illustrated with two numerical examples.
- A multi generational approach to project management: implications for engineering education in a smart worldPublication . Silva, Cláudia; Magano, José; Figueiredo, Cláudia; Vitoria, Andreia; Nogueira, TeresaIn a fast pace evolving smart world, underlined by technology change and market globalisation, project management is of paramount importance for companies to deliver competitive goods and services. To be effective, project teams should master processes, personal, technical and business competencies. The teaching of project management could be adapted in order to reduce the gap that seems to exist between the engineer graduate profile and the requirements that challenge professional engineers today, namely equipping new engineers with sound soft skills. Generation Z, currently studying in HEIs, has characteristics, needs and expectations that should be considered when discussing potential changes in project management education. This paper explores these topics. The literature review establishes the characteristics of generation Z, project management teaching trends, and draws implications for the teaching of project management within the scope of engineering education. A sample of 147 Generation Z undergraduate students filled a self-report questionnaire considering personality, resilience and emotional intelligence to assess their awareness about the traits that are relevant for project management. Through their self-assessment results, the participating students are aware of some of their characteristics, namely orientation towards results, high resilience and low neuroticism. Due to the high resilience indicators and low levels of neuroticism, Generation Z can be an important asset within a multigenerational project team. Also, some inconsistencies were identified as the participants displayed high levels of agreeableness and low levels of openness to experience. These results are discussed, linking personality traits of Generation Z with some important soft skills in project management, including teamwork and communication skills. Finally, recommendations and approaches for teaching project management in engineering education programs are presented.