Percorrer por autor "Santos, Paulo"
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- Business Plan for wholesale and retail trade of watchesPublication . Santos, Paulo; Borges, Ana PintoThis work of project presents a business plan for a watch trading business, aiming to demonstrate its feasibility. The study uses an approach based on a literature review on the main methodologies of analysis and evaluation of investment projects and financial metrics. The research details the necessary stages for the evaluation of the investment, including the market analysis, marketing strategy, operational plan, financial projections and the consequent feasibility analysis, with the identification of risks and determination of performance indicators. Through the market analysis, growth opportunities were identified, indicating a favourable market for this enterprise. Furthermore, the marketing strategies developed aim to effectively reach the targeted market, maximizing the chances of success. In the financial evaluation, revenues and expenses were estimated, as well as the projected cash-flows for the first years of operation. Based on these projections and the application of the appropriate financial metrics, it was concluded that the project presents a solid economic viability. All return and payback metrics demonstrate attractiveness for the investor, verifying the profitable potential of the venture. The combination of an auspicious market analysis, innovative marketing strategies and favourable financial results support the positive recommendation for the project implementation and provide a solid foundation for strategic decision-making and future entrepreneurial actions. This study contributes to the understanding of the evaluation processes of investment projects and highlights the importance of financial metrics in the analysis of business feasibility. Furthermore, it offers valuable insights for entrepreneurs looking to undertake in the watch trading sector.
- O conceito “Guerra Centrada em Rede” e a modernização dos sistemas de armas da Força Aérea PortuguesaPublication . Santos, PauloA nova vaga civilizacional traduz-se no desvio das atenções para o poder da informação, em detrimento de outras fontes de poder. Tal como em épocas passadas, a instituição militar rapidamente adoptou os novos conceitos percebendo o valor da informação e da sua partilha como vector catalizador do sucesso no combate. A presente investigação pretende avaliar de que forma os recentes sistemas de armas e os programas de modernização da Força Aérea Portuguesa estão de acordo com os requisitos técnicos impostos pelas novas linhas de orientação da NATO, apoiadas em redes globais de informação, de forma a garantir a interoperabilidade das forças nacionais com as forças de outros estados membros da Aliança Atlântica, num hipotético cenário de guerra centrada em rede. As conclusões apresentadas demonstram que os meios aéreos estudados, apesar do esforço realizado pela Força Aérea Portuguesa no sentido de alcançar as metas traçadas pela Aliança Atlântica, apenas garantem níveis baixos ou médios de interoperabilidade, tendo por referência o nível tecnológico aplicado nos sistemas de armas. Abstract: The new civilizational wave reflects a course deviation concerning the attention given to the power of information, leaving behind other sources of power. Like in previous times, military organizations quickly adopted the new concepts, realizing the value and sharing of information in order to enable combat sucess. This investigation intends to evaluate if the recent Portuguese Air Force weapon systems and modernization programs have complied with the technical requirements imposed by the new NATO guidelines, supported by global information networks, in order to assure interoperability between national forces and Alliance member states, in an hipothetic networked-centric warfare scenario. The conclusions of the investigation show that the researched air assets, despite the effort made by the Portuguese Air Force trying to reach the goals established by the Atlantic Organization, can only comply with low and medium levels of interoperability, when referenced to the technical degree applied to the weapon systems.
- Effects of attentional focus on the regulation of torque complexityPublication . Bauer, Philipp; Gomes, João S.; Oliveira, João H.; Santos, Paulo; Pezarat-Correia, Pedro; Vaz, João R.Recent scientific evidence suggests that an external focus of attention (vs. an internal focus of attention) promotes a greater number of motor solutions, rendering the system more adaptable and complex. Therefore, the present study investigated the effect of the attentional focus (external vs. internal) on torque complexity and variability as well as its associated intermuscular coordination processes. Fourteen participants performed maximal and submaximal isometric knee extension tasks in three conditions (control, external focus, internal focus) to assess immediate effects of the focus of attention in a within-subjects comparison. Peak torque was extracted from maximal trials. Regarding submaximal trials, torque complexity and the magnitude of variability were assessed through Sample Entropy (SampEn), i.e., a measure of regularity in the temporal structure of torque output and coefficient of variation (CV), respectively. The intermuscular coordination was assessed through co-contraction index. An external focus led to an increase in SampEn (i.e., decreased regularity) when compared to an internal focus (p = 0.032) and a control condition (p = 0.036). Conversely, no differences were found for CV and peak torque. The external focus promoted a decrease in muscular activity of vastus medialis in comparison with the internal focus (p = 0.040) and an increase in muscular activity when compared to the control condition (p < 0.001). Furthermore, an external focus led to decreased muscular activity of semitendinosus as well as a decrease in the co-contraction indices involving semitendinosus in comparison with the internal focus and the control condition (all p < 0.05). The present findings suggest that an external focus leads to an enhanced flexibility of motor control. Moreover, the general decrease in co-contraction and in muscular activity without affecting maximal force parameters that we observed with an external focus suggest a higher efficiency of the motor system caused by intermuscular coordination processes.
- Impact of the optimal minimum velocity threshold on the accuracy of one repetition maximum estimation-based on a mixed modelPublication . Fitas, Afonso; Gomes, Miguel; Santos, Paulo; Vila-Chã, Carolina; Pezarat-Correia, Pedro; Mendonça, Gonçalo V.Purpose: This study aimed at developing two mixed methods approaches for 1RM prediction (generalized equations together with the individual load–velocity relationship—LVR). The validity of such equations was explored and compared with the validity of individual LVRs. Methods: The submaximal LVRs of seventy-six males was obtained for the free-weight back squat. Theoretical load at zero velocity (LD0), the slope of the individual LVR, and the individual (ModelIND) and optimal minimum velocity thresholds (MVT) (ModelOPT) were selected to develop the equations. Prediction accuracy was determined through mean differences, absolute percent errors and Bland–Altman plots. Results: ModelIND was predictive of 1RM (p < 0.0001), explaining 89.7% of its variance. ModelOPT increased the prediction power of 1RM to 98.7% (p < 0.0001). No significant differences in the absolute percent errors were found (4.7 and 3.9%, for ModelIND and ModelOPT, respectively). The mean difference between actual and estimated 1RM was nearly zero for both models, while individual LVRs relying on the individual MVT displayed the contrary. The limits of agreement were 15.1 and 11.4 kg for ModelIND and ModelOPT, respectively. Conclusion: The individual and optimal MVTs add predictive value to LD0 and the slope of the individual LVR for 1RM estimation on a group level and avoid error trends over the entire muscular strength spectrum. However, only ModelIND increased the accuracy of estimations when compared with the more direct approach. From a practical standpoint, practitioners are encouraged to rely on the individual LVR instead of ModelOPT, when using the optimal MVT for estimation purposes.
- Inovar em Tempos de Pandemia: Criação de um Curso de Inovação Pedagógica no Ensino SuperiorPublication . Marques, C. G.; Nata, Ana; Manso, António; Pestana, Hélder; Ferreira, Luis Miguel; Nunes, Maria; Santos, PauloNeste artigo descrevemos o Curso de Inovação Pedagógica desenvolvido pelo Laboratório de Inovação Pedagógica e Educação a Distância do Instituto Politécnico de Tomar (LIED) que teve como ponto de partida a pandemia do coronavírus SARS-COV-2. Neste artigo, começamos por apresentar algumas reflexões relativas ao ato de ensinar a distância e da importância que as novas tecnologias tiveram na transição, com caráter de emergência, para o ensino virtual durante o período de confinamento geral de Portugal que teve início a 16 de março de 2020. Seguidamente, apresentamos os objetivos e a estrutura do Curso de Inovação Pedagógica criado pelo LIED, assim como uma análise dos resultados decorrentes da primeira edição do curso que se realizou na modalidade on-line, com sessões síncronas e assíncronas. Na parte final deste artigo, apresentamos algumas considerações finais que relacionam as novas formas de educar com o Curso de Inovação Pedagógica do LIED.
- Load forecasting in electrical distribution: grid of medium voltagePublication . Chemetova, Svetlana; Santos, Paulo; Ventim-Neves, MárioThe importance of forecasting has become more evident with the appearance of the open electricity market and the restructuring of the national energy sector. This paper presents a new approach to load forecasting in the medium voltage distribution network in Portugal. The forecast horizon is short term, from 24 hours up to a week. The forecast method is based on the combined use of a regression model and artificial neural networks (ANN). The study was done with the time series of telemetry data of the DSO (EDP Distribution) and climatic records from IPMA (Portuguese Institute of Sea and Atmosphere), applied for the urban area of Évora - one of the first Smart Cities in Portugal. The performance of the proposed methodology is illustrated by graphical results and evaluated with statistical indicators. The error (MAPE) was lower than 5%, meaning that chosen methodology clearly validate the feasibility of the test.
- Organização e tratamento de dados e a promoção de literacia estatística no 1ºCEBPublication . Gomes, Maria Laura; Rodrigues, Rita Neves; Santos, Paulo; Rato, Virgílio; M. L. Martins, FernandoA literacia estatística é um tema que tem ganho destaque em contexto escolar pois a primazia que se tem dado a metodologias ativas e à vivência do conhecimento enquadrado no quotidiano fazem com que, professores e futuros professores, tenham de potenciar aprendizagens significativas que sejam compreendidas de modo ativo. Deste modo emerge a questão: De que forma se pode promover a compreensão de conceitos de Organização e Tratamento de Dados no 1.º Ciclo do Ensino Básico?O foco do presente trabalho foi o conteúdo Representação e Tratamento de Dados para o 3.º ano de escolaridade. Com este trabalho pretendeu-se promover a literacia estatística e contribuir para a melhoria da aprendizagem dos alunos, numa perspetiva interdisciplinar. A prática educativa apresentada neste estudo teve como objetivo a promoção da literacia estatística e da interdisciplinaridade, desenvolvida num conjunto de sessões onde os alunos, individualmente e em grupo, resolveram diversas situações problemáticas.
- Plagiarism Detection in Algorithms - a Case Study using AlgorithmiPublication . Manso, António; Marques, C. G.; Santos, Paulo; Alencar, VitorLearning to program is crucial in computer science degree programmes. For students to gain this skill, they need to practise a lot, since programming is a difficult and complex process and practice improves it. The courses "Algorithmics" and "Introduction to programming" have therefore become almost insurmountable barriers with high failure rates. To overcome these barriers, researchers have sought to find new ways of teaching. For their part, students have looked for ways to succeed with less effort by repeatedly resorting to plagiarism. The need for classes to be taught remotely due to the pandemic has further aggravated this problem. To fight it, we created the Algorithmi tool and equipped it with a plagiarism detection module. This tool promotes stand-alone study by allowing self-correction of the exercises whilst validating authorship. This paper presents a case study on the application of the plagiarism module to the exercise resolutions submitted by the students in their personal repository. Through the analysis of the results obtained we can conclude that there was a high rate of plagiarism. The current version of the tool needs to be extended with new features, not only to become more accurate, but above all to prevent plagiarism from happening.
- Previsão de carga eléctrica como uma ferramenta computacional de apoio às Smart GridsPublication . Chemetova, Svetlana; Santos, Paulo; Ventim-Neves, MárioA previsão da carga eléctrica é uma tarefa fundamental para planeamento, operação e exploração dos Sistemas de Energia Eléctrica. A importância da previsão tornou-se mais evidente com a reestruturação do sector energético nacional e com a criação de projectos ligados com as smart grids, nomeadamente em Portugal – o InovGrid. Este artigo descreve o modelo computacional de previsão do Diagrama de Carga Diária baseado no algoritmo Levenberg-Marquardt de Redes Neuronais Artificiais. Os dados a utilizar são as séries temporais de potência activa registados pelo Sistema de Telecontagem da EDP Distribuição e as séries temporais climáticas do Instituto Português do Mar e da Atmosfera, recolhidas na cidade de Évora, uma das primeiras cidades inteligentes (smart cities) em Portugal. O horizonte da previsão é de curto prazo: desde 24 horas até uma semana. Foram obtidos bons resultados observados pelos indicadores estatísticos de erros.