• Influence of rainfall time series sample rate in the improvement of decision-making based on high intensity rainfall events 

  Simões, C.; Ribeiro, A.; Almeida, M. C.; Covas, D.; Coelho, G.; Pinheiro, A. (XXIV IMEKO Congress "Think Metrology", 2024-08)

  Abstract - This study aims Lo assess whether data acquisition frequency can affect the understanding of high-intensity precipitation events. Time series from a weighing gauge and a weighhridge gauge installed at the sarne ...
• Validation of a Iaboratory method for the traceability of a rainfail weighing gauge 

  Simões, C.; Ribeiro, A.; Almeida, M. C.; Covas, D.; Dias, L.; Coelho, G. (University of Calabria, 2024-03)

  ABSTRACT This study aims to develop a Iaberatory method for the traceability of a rainfali weighing gauge, including an evaluation of the measurement uncertainty. The adopted procedure is similar to the one used for the ...
• Metrological quality of the excitation force in forced vibration test of concrete dams 

  Lages Martins, L.; Gomes, J. P.; Ribeiro, A. (IOP Publishing, 2024)

  Abstract. This paper describes the study of the metrological quality of the excitation force in the context of force vibration test of concrete dams. For this purpose, a measurement uncertainty evaluation was performed, ...
• Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach 

  Lazzari, J.; Lages Martins, L.; Ribeiro, A.; Pinheiro, A.; Correia, J.; Silvestre, N. (ELSEVIER, 2024-01-05)

  ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin ...
• RASTREABILIDADE METROLÓGICA DE EXTENSÓMETROS DE RESISTÊNCIA ELÉTRICA UTILIZADOS NA MONITORIZAÇÃO DE BARRAGENS DE BETÃO 

  Lages Martins, L.; Mata, J.; Serra, C.; Ribeiro, A.; Tavares de Castro, A. (Atas do 2º Congresso de Ensaios e Experimentação em Engenharia Civil, 2019-02)

  Esta comunicação descreve o processo de garantia da rastreabilidade metrológica dos extensómetros de resistência elétrica do tipo Carlson utilizados na monitorização de barragens de betão. Este processo foi desenvolvido ...
• Medição do movimento de abertura-fecho e deslizamento de juntas em barragens de betão 

  Lages Martins, L.; Ribeiro, A.; Mata, J.; Tavares de Castro, A. (Sociedade Portuguesa de Metrologia, 2017-06)

  Nesta comunicação, é promovida uma breve descrição dos processos manual e automático para a medição do movimento de juntas em barragens de betão num horizonte temporal alargado que, em regra, abrange vários anos, permitindo ...
• A numerical study of measurement uncertainties for wave gauges 

  Coelho, G.; Ribeiro, A.; Neves, M. G.; Pascoal , A. (Journal Elsevier, 2021-11-12)

  This study describes the development of a Monte Carlo based numerical analysis method to determine the instrumental uncertainty of dimensional measurements with wave gauges. The paper presents ...
• Role of measurement uncertainty in the comparison of average areal rainfall methods 

  Ribeiro, A.; Almeida, M. C.; Cox, M. G.; Sousa, J. A.; Lages Martins, L.; Loureiro, D.; Brito, R.; Soares, A.C. (BIPM & IOP Publishing Ltd, 2021-07-23)

  Abstract The main motivation for this research is the growing awareness of the impact of climate change and the increasing relevance of the United Nations Sustainable Development Goals, aiming to contribute to the ...
• Traceability of high focal length cameras with diffractive optical elements 

  Lages Martins, L.; Ribeiro, A.; Sousa, J. (IOP Publishing Ltd, 2017-02-07)

  Abstract. This paper describes the use of diffractive optical elements (DOEs) for metrological traceable geometrical testing of high focal length cameras applied in the observation of large-scale structures. DOEs and related ...
• Assessment of the metrological performance of seismic tables for a QMS recognition 

  Ribeiro, A.; Campos Costa, A.; Candeias, P.; Sousa, J.; Lages Martins, L.; Soares, A. C.; Costa Ferreira, A. (IOP Publishing Ltd, 2017-02-07)

  Abstract. Seismic testing and analysis using large infrastructures, such as shaking tables and reaction walls, is performed worldwide requiring the use of complex instrumentation systems. To assure the accuracy of these ...
• The influence of thermal comfort on the quality of life of nursing home residents 

  Mendes , A.; Papoila, A .; Carreiro-Martins, P.; Aguiar, L.; Bonassi, S.; Caires , I.; Palmeiro, T.; Ribeiro, A.; Neves, P.; Pereira. C.; Botelho, A.; Neuparth, N.; Teixeira, J. (Taylor & Francis, 2017-05-24)
• Metrologia óptica aplicada à segurança estrutural de pontes suspensas 

  Lages Martins, L.; Ribeiro, A.; Rebordão, J. (SPMet - Sociedade Portuguesa de Metrologia, 2013-09)

  A presente comunicação descreve as temáticas desenvolvidas no âmbito da conceção e desenvolvimento de um sistema óptico de visão computacional visando a medição do deslocamento tridimensional a V2 vão da viga de rigidez ...
• Viabilidade Técnica e impacto económico da aplicação do método Bootstrap em estudos de repetibilidade e reprodutividade 

  Lages Martins, L.; Ribeiro, A. (SPMet - Sociedade Portuguesa de Metrologia, 2013-05)

  A repetibilidade e a reprodutibilidade são duas caracteristicas metrológicas que, frequentemente, constituem relevantes contribuições para a incerteza de medição associada aos resultados de ensaios laboratoriais realizados ...
• Sobre o conceito de incerteza em Física e na Metrologia 

  Ribeiro, A. (SPMet - Sociedade Portuguesa de Metrologia, 2013-05)
• Optical measurement system applied to continuous displacement monitoring of long-span suspension bridges 

  Lages Martins, L.; Ribeiro, A.; Rebordão, J. (2013-05)

  This paper provides a general deseription of main issues related to the design of an optieal measurement system applied to continuous displacement monitoring of long-span suspension bridges. The proposed system's architecture ...
• Quality Assessment of Vertical Angular Deviations for Photometer Calibration Benches 

  Ribeiro, A.; Santos, A. J.; Sousa, J.; Forbes, A. B. (2014-09)

  Lighting, both natural and electric, constitutes one of the most important aspects of the life ofhuman beings, allowing us to see and perform our daily tasks in outdoor and indoor environments. The safety aspects of Iighting ...
• Structural Observation of Long-span Suspension Bridges for Safety Assessment: Implementation of an Optical Displacement Measurement System 

  Lages Martins, L.; Rebordão, J.; Ribeiro, A. (2014-09)

  This pape r addresses the implementation of an optical displacement measurement system in the observation scenario of a long-span suspension bridge and its contribution for structural safety assessment. The metrological ...
• Calibration Analysis of a Computational Optical System Applied in the Dimensional Monitoring of a Suspension Bridge 

  Lages Martins, L.; Rebordão, J.; Ribeiro, A. (2014-09)
• Conception and development of an optical methodology applied to long-distance measurement of suspension bridges dynarnic displaccment 

  Lages Martins, L.; Rebordão, J.; Ribeiro, A. (2013-01)
• The evaluation of uncertainty in mass calibration: Possible approaches in a comparison study 

  Sousa, J.; Forbes, A. B.; Ribeiro, A.; Harris, P. M.; Carvalho, F.; Bacelar, L. (2014-10)

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