Browsing by Author "Gomes, Ricardo"
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- Determinants of the use of health and fitness mobile apps by patients with asthma: secondary analysis of observational studiesPublication . Neves, Ana Luísa; Jácome, Cristina; Taveira-Gomes, Tiago; Pereira, Ana Margarida; Almeida, Rute; Amaral, Rita; Alves-Correia, Magna; Mendes, Sandra; Chaves-Loureiro, Cláudia; Valério, Margarida; Lopes, Cristina; Carvalho, Joana; Mendes, Ana; Ribeiro, Carmelita; Prates, Sara; Ferreira, José Alberto; Teixeira, Maria Fernanda; Branco, Joana; Santalha, Marta; Vasconcelos, Maria João; Lozoya, Carlos; Santos, Natacha; Cardia, Francisca; Moreira, Ana Sofia; Taborda-Barata, Luís; Pinto, Cláudia Sofia; Ferreira, Rosário; Silva, Pedro Morais; Ferreira, Tânia Monteiro; Câmara, Raquel; Lobo, Rui; Bordalo, Diana; Guimarães, Cristina; Santo, Maria Espírito; Oliveira, José Ferraz de; Augusto, Maria José Cálix; Gomes, Ricardo; Vieira, Inês; Silva, Sofia da; Marques, Maria; Cardoso, João; Morete, Ana; Aroso, Margarida; Cruz, Ana Margarida; Nunes, Carlos; Câmara, Rita; Rodrigues, Natalina; Abreu, Carmo; Albuquerque, Ana Luísa; Vieira, Claúdia; Santos, Carlos; Páscoa, Rosália; Chaves-Loureiro, Carla; Alves, Adelaide; Neves, Ângela; Marques, José Varanda; Reis, Bruno; Ferreira-Magalhães , Manuel; Fonseca, João AlmeidaHealth and fitness apps have potential benefits to improve self-management and disease control among patients with asthma. However, inconsistent use rates have been reported across studies, regions, and health systems. A better understanding of the characteristics of users and nonusers is critical to design solutions that are effectively integrated in patients’ daily lives, and to ensure that these equitably reach out to different groups of patients, thus improving rather than entrenching health inequities.
- Efficient aggregate computations in large-scale dense WSNPublication . Pereira, Nuno; Gomes, Ricardo; Andersson, Björn; Tovar, EduardoWe focus on large-scale and dense deeply embedded systems where, due to the large amount of information generated by all nodes, even simple aggregate computations such as the minimum value (MIN) of the sensor readings become notoriously expensive to obtain. Recent research has exploited a dominance-based medium access control(MAC) protocol, the CAN bus, for computing aggregated quantities in wired systems. For example, MIN can be computed efficiently and an interpolation function which approximates sensor data in an area can be obtained efficiently as well. Dominance-based MAC protocols have recently been proposed for wireless channels and these protocols can be expected to be used for achieving highly scalable aggregate computations in wireless systems. But no experimental demonstration is currently available in the research literature. In this paper, we demonstrate that highly scalable aggregate computations in wireless networks are possible. We do so by (i) building a new wireless hardware platform with appropriate characteristics for making dominance-based MAC protocols efficient, (ii) implementing dominance-based MAC protocols on this platform, (iii) implementing distributed algorithms for aggregate computations (MIN, MAX, Interpolation) using the new implementation of the dominance-based MAC protocol and (iv) performing experiments to prove that such highly scalable aggregate computations in wireless networks are possible.
- Efficient implementation of a dominance protocol for wireless medium accessPublication . Gomes, Ricardo; Pereira, Nuno Alexandre Magalhães; Andersson, BjörnEmbedded computing systems went through extraordinary evolutions during the past two decades, representing nowadays one of the most promising technologies for improving a wide range of application areas such as energy/resource management, safety, health or entertainment. New sensors and actuators are leading to an unprecedented level of interaction between computing systems and their surrounding physical environment. These embedded computers tend to be networked, often wirelessly, and they are becoming denser, of larger scale and more pervasively deployed. Since the wireless channel is a "natural resource" which must be shared between this large number of embedded computers, the medium access control (MAC) protocol significantly influences the performance of the entire system. In particular, satisfying real-time requirements — something that is needed for a computer to tightly interact with its physical environment — plays an important role. One solution was recently proposed by Pereira, Andersson and Tovar. It was a prioritized and collision-free MAC protocol belonging to a family of protocols called dominance/binary countdown protocols. This solution was implemented in commercial-off-the-shelf (COTS) wireless sensor networks (WSN) platforms and the implementation was demonstrated to be working. Unfortunately, those platforms had (for the MAC protocol) unfavourable characteristics which lead to limited efficiency and excessive overhead of the MAC protocol. This work presents a new hardware platform, in the form of a network adapter for common WSN platforms, that allows an efficient implementation of dominance protocols for wireless medium access, allowing the medium access to be performed in less than 5 ms for 216 priority levels, which represents an overhead reduction of more than ten times as compared to the protocol implementation in COTS WSN platforms. Additionally, the overall energy consumption was reduced by approximately 45 % when compared to the theoretical best-case performance of the protocol implementation in COTS WSN platforms. iv This work also allowed, for the first time ever, an aggregate computation scheme for WSN to work exploiting the new efficient implementation of a binary/dominance countdown protocol.
- EMMON: a system architecture for large- scale, dense and real-time WSNsPublication . Tennina, Stefano; Braga, Pedro; Alves, Mário; Ciriello, Vincenzo; Santos, Manuel; Cahill, Vinny; Bouroche, Mélanie; Gomes, Ricardo; Mirza, Farrukh; Carrozza, Gabriella; Garg, AnuragIn spite of the significant amount of scientific work in Wireless Sensor Networks (WSNs), there is a clear lack of effective, feasible and usable WSN system architectures that address both functional and non-functional requirements in an integrated fashion. This poster abstract outlines the EMMON system architecture for large-scale, dense, real-time embedded monitoring. EMMON relies on a hierarchical network architecture together with integrated middleware and command&control mechanisms. It has been designed to use standard commercially– available technologies, while maintaining as much flexibility as possible to meet specific applications’ requirements. The EMMON WSN architecture has been validated through extensive simulation and experimental evaluation, including through a 300+ node test-bed, the largest WSN test-bed in Europe to date
- EMMON: a WSN system architecture for large scale and dense real-time embedded monitoringPublication . Tennina, Stefano; Braga, Pedro; Alves, Mário; Ciriello, Vincenzo; Oliveira, Pedro; Bouroche, Mélanie; Gomes, Ricardo; Mirza, Farrukh; Carrozza, Gabriella; Cahill, VinnyWireless sensor networks (WSNs) have attracted growing interest in the last decade as an infrastructure to support a diversity of ubiquitous computing and cyber-physical systems. However, most research work has focused on protocols or on specific applications. As a result, there remains a clear lack of effective, feasible and usable system architectures that address both functional and non-functional requirements in an integrated fashion. In this paper, we outline the EMMON system architecture for large-scale, dense, real-time embedded monitoring. EMMON provides a hierarchical communication architecture together with integrated middleware and command and control software. It has been designed to use standard commercially-available technologies, while maintaining as much flexibility as possible to meet specific applications requirements. The EMMON architecture has been validated through extensive simulation and experimental evaluation, including a 300+ node test-bed, which is, to the best of our knowledge, the largest single-site WSN test-bed in Europe to date.
- Feasibility and acceptability of an asthma app to monitor medication adherence: mixed methods studyPublication . Jácome, Cristina; Almeida, Rute; Pereira, Ana Margarida; Amaral, Rita; Mendes, Sandra; Alves-Correia, Magna; Vidal, Carmen; Freire, Sara López; Brea, Paula Méndez; Araújo, Luís; Couto, Mariana; Antolín-Amérigo, Darío; Caballer, Belén de la Hoz; Castro, Alicia Barra; Gonzalez-De-Olano, David; Bom, Ana Todo; Azevedo, João; Pinto, Paula Leiria; Pinto, Nicole; Neves, Ana Castro; Palhinha, Ana; Bom, Filipa Todo; Costa, Alberto; Loureiro, Cláudia Chaves; Santos, Lilia Maia; Arrobas, Ana; Valério, Margarida; Cardoso, João; Emiliano, Madalena; Gerardo, Rita; Rodrigues, José Carlos Cidrais; Oliveira, Georgeta; Carvalho, Joana; Mendes, Ana; Lozoya, Carlos; Santos, Natacha; Menezes, Fernando; Gomes, Ricardo; Câmara, Rita; Alves, Rodrigo Rodrigues; Moreira, Ana Sofia; Bordalo, Diana; Alves, Carlos; Ferreira, José Alberto; Lopes, Cristina; Silva, Diana; Vasconcelos, Maria João; Teixeira, Maria Fernanda; Ferreira-Magalhães, Manuel; Taborda-Barata, Luís; Cálix, Maria José; Alves, Adelaide; Fonseca, João AlmeidaPoor medication adherence is a major challenge in asthma, and objective assessment of inhaler adherence is needed. The InspirerMundi app aims to monitor adherence while providing a positive experience through gamification and social support. This study aimed to evaluate the feasibility and acceptability of the InspirerMundi app to monitor medication adherence in adolescents and adults with persistent asthma (treated with daily inhaled medication). A 1-month mixed method multicenter observational study was conducted in 26 secondary care centers from Portugal and Spain. During an initial face-to-face visit, physicians reported patients’ asthma therapeutic plan in a structured questionnaire. During the visits, patients were invited to use the app daily to register their asthma medication intakes. A scheduled intake was considered taken when patients registered the intake (inhaler, blister, or other drug formulation) by using the image-based medication detection tool. At 1 month, patients were interviewed by phone, and app satisfaction was assessed on a 1 (low) to 5 (high) scale. Patients were also asked to point out the most and least preferred app features and make suggestions for future app improvements. A total of 107 patients (median 27 [P25-P75 14-40] years) were invited, 92.5% (99/107) installed the app, and 73.8% (79/107) completed the 1-month interview. Patients interacted with the app a median of 9 (P25-P75 1-24) days. At least one medication was registered in the app by 78% (77/99) of patients. A total of 53% (52/99) of participants registered all prescribed inhalers, and 34% (34/99) registered the complete asthma therapeutic plan. Median medication adherence was 75% (P25-P75 25%-90%) for inhalers and 82% (P25-P75 50%-94%) for other drug formulations. Patients were globally satisfied with the app, with 75% (59/79) scoring ≥4,; adherence monitoring, symptom monitoring, and gamification features being the most highly scored components; and the medication detection tool among the lowest scored. A total of 53% (42/79) of the patients stated that the app had motivated them to improve adherence to inhaled medication and 77% (61/79) would recommend the app to other patients. Patient feedback was reflected in 4 major themes: medication-related features (67/79, 85%), gamification and social network (33/79, 42%), symptom monitoring and physician communication (21/79, 27%), and other aspects (16/79, 20%). The InspirerMundi app was feasible and acceptable to monitor medication adherence in patients with asthma. Based on patient feedback and to increase the registering of medications, the therapeutic plan registration and medication detection tool were redesigned. Our results highlight the importance of patient participation to produce a patient-centered and engaging mHealth asthma app.
- Feasibility of a mobile app to improve inhaler adherence in real‐world patients with asthma: A multicentre observational study in Portugal and SpainPublication . Jácome, Cristina; Rute, Almeida; Amaral, Rita; Pereira, Ana Margarida; Vidal, Carmen; Freire, Sara Lopéz; Mendez Brea, Paula; Antolín- Amerigo, Dario; De La Hoz Caballer, Belen; Barra Castro, Alicia; González de Olano, David; Todo-Bom, Ana; Azevedo, João; Pinto, Paula Leiria; Neuparth, Nuno; Todo-Bom, Filipa; Costa, A.; Loureiro, Cláudia Chaves; Maia Santos, L.; Arrobas, Ana Maria; Valério, M.; Cardoso, João; Emiliano, Madalena; Gerardo, Rita; Cidrais Rodrigues, J. C.; Oliveira, G.; Carvalho, J.; Mendes, Ana; Lozoya, Carlos; Santos, Natacha; Menezes, F.; Gomes, Ricardo; Câmara, R.; Rodrigues Alves, Rodrigo; Moreira, Ana Sofia; Bordalo, Diana; Alves, C.; Coelho, D.; Ferreira, J. A.; Lopes, Cristina; Vasconcelos, M. J.; Teixeira, M. F.; Taborda-Barata, L.; Cálix, M. J.; Alves, A.; Almeida Fonseca, J.InspirerMundi app aims to transform adherence into a positive experience through gamification and social support, while allowing objective monitoring of inhaler adherence. This study assessed the feasibility of the app in adolescents and adults with persistent asthma.
- Flexible manufacturing field trialPublication . Cruz, Nuno; Gomes, RicardoWithin the European project R-Fieldbus (http://www.hurray.isep.ipp.pt/activities/rfieldbus/), an industrial manufacturing field trial was developed. This field trial was conceived as a demonstration test bed for the technologies developed during the project. Because the R-Fieldbus field trial included prototype hardware devices, the purpose of this equipment changed and since the conclusion of the project, several new technologies also emerged, therefore an update of the field trial was required. This document describes an update of the manufacturing field trial. The purpose of this update, the changes and improvements introduced are described in the document. Additionally, this document also provides a reliable source of documentation for the equipment, configuration and software components of the manufacturing field trial.
- FMFT electric schematic revision/updatePublication . Gomes, RicardoThe recent update of the R-Fieldbus testbed to the new Flexible Manufacturing Field Trial – FMFT – brought up the need for a complete revision of its electric schematic.This document comes as a sort of appendix to the Technical Report “Flexible Manufacturing Field Trial”, providing a reliable source of information about the FMFT electric schematic for further developments and/or maintenances.
- Operational modal monitoring of ancient structures using wireless technologyPublication . Aguilar, Rafael; Ramos, Luis; Lourenço, Paulo; Severino, Ricardo; Gomes, Ricardo; Sousa, Paulo Gandra de; Alves, Mário; Tovar, EduardoOperational Modal Analysis is currently applied in structural dynamic monitoring studies using conventional wired based sensors and data acquisition platforms. This approach, however, becomes inadequate in cases where the tests are performed in ancient structures with esthetic concerns or in others, where the use of wires greatly impacts the monitoring system cost and creates difficulties in the maintenance and deployment of data acquisition platforms. In these cases, the use of sensor platforms based on wireless and MEMS would clearly benefit these applications. This work presents a first attempt to apply this wireless technology to the structural monitoring of historical masonry constructions in the context of operational modal analysis. Commercial WSN platforms were used to study one laboratory specimen and one of the structural elements of a XV century building in Portugal. Results showed that in comparison to the conventional wired sensors, wireless platforms have poor performance in respect to the acceleration time series recorded and the detection of modal shapes. However, for frequency detection issues, reliable results were obtained, especially when random excitation was used as noise source.