Search Results - "Andrade, António R."

Multivariate statistical aggregation and dimensionality reduction techniques to improve monitoring and maintenance in railways: The wheelset component by Braga, Joaquim A.P., Andrade, António R.

“…Reliable monitoring and assessment of wear evolutions are critical for performing effective railway maintenance. Several characteristics and variables are used…”
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Safety assessment using computer experiments and surrogate modeling: Railway vehicle safety and track quality indices by Neves Costa, João, Ambrósio, Jorge, Andrade, António R., Frey, Daniel

“…•A framework to find relationships between track quality and vehicle safety.•The assessment of track quality includes vehicle dynamics.•Highlights which inputs…”
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Combining wavelet analysis of track irregularities and vehicle dynamics simulations to assess derailment risks by Costa, Mariana A., Costa, João N., Andrade, António R., Ambrósio, Jorge

“…Guaranteeing operational safety is mandatory for railways worldwide. As track deteriorates, its geometry deviates from ideal conditions (e.g. perfectly aligned…”
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Poor insight in obsessive compulsive disorder (OCD): Associations with empathic concern and emotion recognition by Manarte, Lucas, Andrade, António R., do Rosário, Linete, Sampaio, Daniel, Figueira, Maria Luísa, Langley, Christelle, Morgado, Pedro, Sahakian, Barbara J.

“…•Poor insight patients have the worst prognosis.•Insight is a promising tool to assess OCD severity.•Insight in OCD is related to emotional awareness.•Poor…”
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Executive functions and insight in OCD : a comparative study by Manarte, Lucas, Andrade, António R., Rosário, Linete do, Sampaio, Daniel, Figueira, Maria Luisa, Morgado, Pedro, Sahakian, Barbara J.

“…© The Author(s). 2021. This article is licensed under a Creative Commons Attribution 4.0 International License. Background: Around 25 to 30% of patients with…”
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Plasma BDNF and insight in OCD: a promising path for future research by Manarte, Lucas, Saldanha, João, Andrade, António R, Tanqueiro, Sara, Morgado, Pedro, Sahakian, Barbara J

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A hybrid maintenance approach for key components of the train bogie to optimize fleet availability by Costa, Mariana A., Alves, Tiago P., Andrade, António R., Corman, Francesco

“…In the context of intelligent transport systems and the rapid development of the global economy, railways face increasing demand to become safer, more…”
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Maintenance scheduling within rolling stock planning in railway operations under uncertain maintenance durations by Mira, Luís, Andrade, António R., Gomes, Marta Castilho

“…Optimizing railway and rolling-stock operations, reducing costs and improving service reliability are goals that should be pursued and adapted to the current…”
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Human reliability and Organizational factors—How do Human Factors contribute to Signals Passed at Danger? by Neves, Gonçalo, Ribeiro, Guilherme, Grilo, Miguel, Infante, Virgínia, Andrade, António R.

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Reliability and availability assessment of railway locomotive bogies under correlated failures by Leite, Manuel, A. Costa, Mariana, Alves, Tiago, Infante, Virgínia, Andrade, António R.

“…•A Discrete Event Simulation model is proposed to study the impact on the system, in terms of reliability and availability.•Different scenarios with varying…”
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Predicting hourly origin–destination demand in bike sharing systems using hurdle models: Lisbon case study by Lucas, Vera, Andrade, António R.

“…•We estimated hourly O-D demand in Lisbon Bike Sharing System.•Hurdle models showed a better fit than GLM and Zero-augmented regression models.•The weather and…”
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Data-driven decision support system for degrading assets and its application under the perspective of a railway component by A．P． Braga, Joaquim, R． Andrade, António

“…•A decision framework to improve the current maintenance practices in companies.•The lifecycle of components is extended and long-term maintenance costs are…”
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Retinal Vasculitis Secondary to Durvalumab by R. Andrade, Antonio, Moll-Udina, Aina, Martin, Ruth, Cilveti, Esther, Subirà, Olaia, Disfetano, Laura, García-Arumí, Jose

“…Ocular manifestations are very rarely reported as side effects to checkpoint inhibitors. We present a case of a 64-year-old Caucasian man in treatment with…”
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2D joint inversion of dc and scalar audio-magnetotelluric data in the evaluation of low enthalpy geothermal fields by Monteiro Santos, Fernando A, Afonso, António R Andrade, Dupis, André

“…Audio-magnetotelluric (AMT) and resistivity (dc) surveys are often used in environmental, hydrological and geothermal evaluation. The separate interpretation…”
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Optimizing Maintenance Decision in Rails: A Markov Decision Process Approach by Sancho, Luís C. B, Braga, Joaquim A. P, Andrade, António R

“…AbstractThe present paper contributes on how to model maintenance decision support for the rail components, namely on grinding and renewal decisions, by…”
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New Onset Diabetes and Non-Alcoholic Fatty Liver Disease after Liver Transplantation by Andrade, Antônio R, Bittencourt, Paulo L, Codes, Liana, Evangelista, Maria A, Castro, Alessandra O, Sorte, Ney Boa, Almeida, Carolina G, Bastos, Jorge A, Cotrim, Helma P

“…AbstractBackground & AimsNon-alcoholic fatty liver disease (NAFLD) is an emerging cause of graft dysfunction after liver transplantation (LT) frequently…”
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Simultaneous scheduling of maintenance crew and maintenance tasks in bus operating companies: a case study by Martins, Rodrigo, Fernandes, Francisco, Infante, Virginia, Andrade, Antonio R

“…PurposeThe purpose of this paper is to describe an integer linear programming model to schedule the maintenance crew and the maintenance tasks in a bus…”
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Robust assessment of railway vehicle safety risks in operation using a proposed data-driven wheel profile generation approach: Design of computer experiments and surrogate models by Braga, Joaquim A.P., Costa, João N., Ambrósio, Jorge, Frey, Daniel, Andrade, António R.

“…•Data-driven railway wheel profile generation approach.•Verified extreme wheel unloading in operation conditions.•Quantification of flange climb derailment…”
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Assessing the performance of different devices in railway wheelset inspection by de Almeida Costa, Mariana, Pedro de Azevedo Peixoto Braga, Joaquim, Ramos Andrade, António

“…•Inspection data to compare measurement devices in railway wheelset maintenance.•Mixed-effects approach superior for assessing agreement between inspection…”
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Rebalancing in bike sharing systems: Application to the Lisbon case study by Chastre, Miguel R., Andrade, Antonio R.

“…•We adapted a MILP formulation of the Bike Rebalancing Problem in Lisbon BSS.•We extended current formulation by considering different types of vehicles and…”
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