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Publications

Publications by Patrícia Teixeira Gonçalves

2018

Mr. Silva and Patient Zero: A Medical Social Network and Data Visualization Information System

Authors
Goncalves, PCT; Moura, AS; Cordeiro, MNDS; Campos, P;

Publication
SIMULATION, IMAGE PROCESSING, AND ULTRASOUND SYSTEMS FOR ASSISTED DIAGNOSIS AND NAVIGATION

Abstract
Detection of Patient Zero is an increasing concern in a world where fast international transports makes pandemia a Public Health issue and a social fear, in cases such as Ebola or H5N1. The development of a medical social network and data visualization information system, which would work as an interface between the patient medical data and geographical and/or social connections, could be an interesting solution, as it would allow to quickly evaluate not only individuals at risk but also the prospective geographical areas for imminent contagion. In this work we propose an ideal model, and contrast it with the status quo of present medical social networks, within the context of medical data visualization. From recent publications, it is clear that our model converges with the identified aspects of prospective medical networks, though data protection is a key concern and implementation would have to seriously consider it.

2019

Centrality and community detection: a co-marketing multilayer network

Authors
Fernandes, A; Goncalves, PCT; Campos, P; Delgado, C;

Publication
JOURNAL OF BUSINESS & INDUSTRIAL MARKETING

Abstract
Purpose Based on the data obtained from a questionnaire of 595 people, the authors explore the relative importance of consumers, checking whether socioeconomic variables influence their centrality, detecting the communities within the network to which they belong, identifying consumption patterns and checking whether there is any relationship between co-marketing and consumer choices. Design/methodology/approach A multilayer network is created from data collected through a consumer survey to identify customers' choices in seven different markets. The authors focus the analysis on a smaller kinship and cohabitation network and apply the LART network community detection algorithm. To verify the association between consumers' centrality and variables related to their respective socioeconomic profile, the authors develop an econometric model to measure their impact on consumer's degree centrality. Findings Based on 595 responses analysing individual consumers, the authors find out which consumers invest and which variables influence consumers' centrality. Using a smaller sample of 70 consumers for whom they know kinship and cohabitation relationships, the authors detect communities with the same consumption patterns and verify that this may be an adequate way to establish co-marketing strategies. Originality/value Network analysis has become a widely used technique in the extraction of knowledge on consumers. This paper's main (and novel) contribution lies in providing a greater understanding on how multilayer networks represent hidden databases with potential knowledge to be considered in business decisions. Centrality and community detection are crucial measures in network science which enable customers with the highest potential value to be identified in a network. Customers are increasingly seen as multidimensional, considering their preferences in various markets.

2022

Modelling the Heating Process in the Transient and Steady State of an In Situ Tape-Laying Machine Head

Authors
Rodrigues, JD; Goncalves, PT; Pina, L; de Almeida, FG;

Publication
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING

Abstract
As the use of composite materials increases, the search for suitable automated processes gains relevance for guaranteeing production quality by ensuring the uniformity of the process, minimizing the amount of scrap generated, and reducing the time and energy consumption. Limitations on production by traditional means such as hand lay-up, vacuum bagging, and in-autoclave methods tend not to be as efficient when the size and shape complexity of the part being produced increases, motivating the search for alternative processes such as automated tape laying (ATL). This work aims to describe the process of modelling and simulating a composite ATL with in situ consolidation by characterizing the machine elements and using the finite differences method in conjunction with energy balances in order to create a digital twin of the process for further control design. The modelling approach implemented is able to follow the process dynamics when changes are made to the heating element and to predict the composite material temperature response, making it suitable for use as a digital twin of a production process using an ATL machine.

2009

A study on the determination of stochastic reinforcement permeability in constant injection pressure conditions

Authors
Goncalves, PCT; Correia, NC;

Publication
ICCM International Conferences on Composite Materials

Abstract
We report two effects in permeability measurement: the error introduced by assuming constant injection pressure and the evolution of permeability dispersion with volume fraction. For the first, we proposed a simple modelling approach. For the second, our results showed a reduction in the dispersion with higher fibre volume fractions, which we believe is due to the reduction of the variability of the size of the pores of the reinforcement.

2009

A study on the determination of stochastic reinforcement permeability in constant injection pressure conditions

Authors
Gonçalves, PCT; Correia, NC;

Publication
ICCM International Conferences on Composite Materials

Abstract
We report two effects in permeability measurement: the error introduced by assuming constant injection pressure and the evolution of permeability dispersion with volume fraction. For the first, we proposed a simple modelling approach. For the second, our results showed a reduction in the dispersion with higher fibre volume fractions, which we believe is due to the reduction of the variability of the size of the pores of the reinforcement.

2006

Parameterization and visualization interface for the FastComp program

Authors
Goncalves, PCT; Tavares, JMRS;

Publication
ACTAS DA 1A CONFERENCIA IBERICA DE SISTEMAS E TECNOLOGIAS DE INFORMACAO, VOL II

Abstract

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