31 documents found, page 1 of 4
As atitudes dos professores de educação física face à inclusão de alunos com ne...
Ramos, PedroEste relatório tem como objetivo descrever todo o trabalho realizado na Prática de Ensino Supervisionada realizada no ano letivo de 2021/2022,num colégio no concelho de Almada.O presente relatório está dividido em 4 partes,as quaisrepresentam as 4 dimensões que o aluno estagiário tem de intervir ao longo dasua Prática de Ensino Supervisionada.As quatro dimensões são: Dimensão de Desenvolvimento Profissional ao ...
Microphysiological systems to study colorectal cancer: State-of-the-art
Ramos, Pedro; Carvalho, Mariana Rodrigues; Chen, Wei; Yan, Le-Ping; Zhang, Chang-Hua; He, Yu-Long; Reis, R. L.; Oliveira, Joaquim M.Basic pre-clinical research based on 2D cultures have been very valuable in colorectal cancer (CRC) research but still have failed to improve patient prognostic outcomes. This is because they simply do not replicate what happens in vivo, i.e. 2D cultured cells system cannot replicate the diffusion constraints usually found in the body. Importantly, they also do not mimic the dimensionality of the human body and...
Threshold Estimation for Least-Squares Fitting in Impedance Spectroscopy
Janeiro, Fernando; Ramos, PedroThe estimation of circuit component values in impedance spectroscopy applications usually requires the minimization of a least-squares cost function. Independently of the minimization method used, a threshold value should be used as a stopping criteria for the iterative minimization procedure. This paper presents a new estimator for the threshold value to be used in least-squares minimization problems applied t...
Digital Filter Performance for Zero Crossing Detection in Power Quality Embedde...
Rodrigues, Nuno; Janeiro, Fernando; Ramos, PedroPower quality analysis involves the measurement of quantities that characterize the power supply waveforms such as RMS value, frequency, harmonic and inter-harmonic distortion or the presence of transients. The measurement of these quantities is regulated by internationally accepted standards from IEEE or IEC. In particular, for the evaluation of frequency and RMS values, the standard suggests the detection of ...
Comparison of harmonic estimation methods for power quality assessment
Rodrigues, Nuno; Ramos, Pedro; Janeiro, FernandoPower quality is regulated by international accepted standards from IEEE and IEC. One of the parameters that is defined in the standards is the harmonic distortion. The grouping method is the standard-advised method to evaluate harmonics but other approaches can be used. In this paper, three different methods are compared considering memory requirements, relative time consumption and the uncertainty of the harm...
The opportunity costs of commuting: the value of a commuting satellite account ...
Ferreira, João-Pedro; Ramos, Pedro; Cruz, Luís; Barata, EduardoCommuting affects regional and urban economies. It shapes urban areas, defines their relationships with neighboring regions, intensifies economic flows and exacerbates energy consumption and greenhouse gas emissions. This paper sets out a proposal for an innovative commuting satellite account (CSA), integrated in a multi-regional input–output model. This framework combines commuting activities with regional dis...
MODELO TEÓRICO PARA AVALIAÇÃO DO IMPACTO DO COMPORTAMENTO DO CONSUMIDOR NA PERF...
Ramos, PedroEste trabalho de investigação fixa-se na problemática relativa ao modo como os diferentes fatores que tendem a influenciar o comportamento do consumidor: socioculturais; económicos; pessoais; psicológicos, podem afetar positivamente o ciclo de inovação e, por inerência, o desempenho empresarial, não só em termos quantitativos, como também em termos qualitativos. Com base na literatura existente foi conceptualiz...
Low Pass Digital Filter Delay Compensation for Accurate Zero Cross Detection in...
Rodrigues, Nuno; Janeiro, Fernando; Ramos, PedroZero crossing detection with a low pass filter is a common method used to estimate a signal frequency or period when the signal is affected by noise, harmonics or other parasitic frequencies. This method is often used in power quality measurements due to the typical disturbances of the electrical power grid signals and is for example, suggested in IEC 61000-4-30 for power quality frequency estimation. Zero cros...
Artificial Bee Colony Algorithm for Peak-to-Peak Factor Minimization in Periodi...
Hu, Yingyue; Ramos, Pedro; Janeiro, FernandoMinimization of the peak-to-peak factor in multiharmonic signals is highly desirable in many signal processing applications such as impedance spectroscopy and acoustic signal generation. This minimization allows optimized signal to noise ratio within a given signal amplitude range. Careful selection of the phases of each harmonic of a multiharmonic signal may lead to much better peakto- peak factors when compar...
Modeling commuting patterns in a multi-regional input–output framework: impacts...
Ferreira, Joao-Pedro; Ramos, Pedro; Cruz, Luís; Barata, EduardoThe paper suggests a modeling approach for assessing economic and social impacts of changes in urban forms and commuting patterns that extends a multi-regional input–output framework by incorporating a set of commuting-related consequences. The Lisbon Metropolitan Area case with an urban re-centralization scenario is used as an example to illustrate the relevance of this modeling approach for analyzing commutin...