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Publicações Científicas

Desde artigos científicos, publicações em conferências a capítulos em livros


Journal Article
Rui Miranda, Carlos Alves, Regina Sousa, António Chaves, Larissa Montenegro, Hugo Peixoto, Dalila Durães, Ricardo Machado, António Abelha, Paulo Novais, José Machado
30 January 2024

Revolutionising the Quality of Life: The Role of Real-Time Sensing in Smart Cities

Abstract: To further evolve urban quality of life, this paper explores the potential of crowdsensing and crowdsourcing in the context of smart cities. To aid urban planners and residents in understanding the nuances of day-to-day urban dynamics, we actively pursue the improvement of data visualisation tools that can adapt to changing conditions. An architecture was created and implemented that ensures secure and easy connectivity between various sources, such as a network of Internet of Things (IoT) devices, to merge with crowdsensing data and use them efficiently. In addition, we expanded the scope of our study to include the development of mobile and online applications, emphasizing the integration of autonomous and geo-surveillance. The main findings highlight the importance of sensor data in urban knowledge. Their incorporation via Tepresentational State Transfer (REST) Application Programming Interface (APIs) improves data access and informed decision-making, and dynamic data visualisation provides better insights. The geofencing of the application encourages community participation in urban planning and resource allocation, supporting sustainable urban innovation.

Keywords: Smart Cities; Crowdsensing; Geofencing; Data Visualisation; Mobile Applications


Conference Paper
ICMarkTech - International Conference on Marketing and Technologies
Carlos Alves, José Machado, José Luís Reis
01-12-2022, Santiago de Compostela, Spain
First Online: 05 September 2023

Review for Augmented Reality Shopping Application for Mobile Systems

The evolution of e-commerce has, in recent times, made a significant advance largely due to the forced digital transformation and to Sars-cov-2. Thus, augmented reality (AR) technology is increasingly being adopted by companies either to increase brand value or to improve the shopping experience for their consumers. This work aims to present a comparative study between some shopping applications using AR, augmented reality shopping applications (ARSAs), which are carried out in stores or online. The applications were studied in articles in Open Access format and the focus was to understand what their conclusions were as well as the problems and trends of future research toward this type of technologies.

Keywords: Augmented reality, E-commerce, Mobile apps, Shopping apps


Conference Paper
4th International Workshop on Hospital 4.0 (Hospital)
Rui Miranda, Carlos Alves, António Abelha, José Machado
March 15-17, 2023, Leuven, Belgium

Data Platforms for Real-time Insights in Healthcare: Systematic Review

Abstract: The ever-growing usage and popularity of Internet of Things devices, coupled with Big Data technologies and machine learning algorithms, have allowed for data engineers to explore new opportunities in healthcare and continuous care. Furthermore, there is a need to reduce the gap on time from when information is created to when actions and insights can be offered. However, a challenge in implementing a large-scale data processing architecture is deciding which tools are appropriate, and how to apply them in the best way possible. For example, streaming systems are now mature enough that hospitals worldwide can use their extremely large datasets, along with data producers, to predict and influence future events. Thus, the main objective of this systematic review is to identify the state-of-the-art in data platforms on healthcare that allow the creation of metrics and actions in real-time. The PRISMA guideline for reporting systematic reviews was implemented to deliver a transparent and consistent report, validating the technological advances in a critical sector. Multiple pertinent articles and papers were retrieved from the SCOPUS abstract and citation database on May 13, 2022, using several relevant keywords to identify potentially relevant documents published from January 2020 onward. These documents must have already been published in English and been already published, and accessible through the B-ON consortium that allows Portuguese students to legally download from most publishers. Over seven studies have been selected for deeper discussion based on their relevance and impact for this review, showcasing their main objectives, data sources, and tools used, as well as their approaches for interoperability and support of machine learning algorithms for decision support. In closing, the collected articles have shown that while Big Data is currently in use at health institutions of all sizes, the ability of processing large amounts of data from sensors and events, and notifying stakeholders as quickly as possible is still in its infancy.

Keywords: Data Engineering; Business Intelligence, Big Data, Machine Learning, Streaming Systems, Data Lake, Data Mining, Event-Driven, Microservices.


Journal Article (Review)
Mayo Clinic Proceedings: Digital Health
Ailton Moreira MSc, Carlos Alves MSc, José Machado PhD, Manuel Filipe Santos PhD

An Overview of Omnichannel Interaction in Health Care Services

The adoption of omnichannel interaction services in health care can bring significant benefits to both health care institutions and their patients. The ongoing health pandemic caused by coronavirus disease has further emphasized the need for health care providers to implement an omnichannel strategy to provide seamless personalized experiences to their patients through multiple access channels. This study aimed to examine the current state of research on omnichannel interaction services in health care with a focus on the benefits, challenges, and issues that health care institutions may encounter when adopting this strategy. A systematic literature review was conducted to synthesize the current state of research and provide a comprehensive overview of the field. The results of the review were used to perform a strengths, weaknesses, opportunities, and threats analysis of omnichannel services in health care and identify 5 key criteria that health care institutions should consider when implementing an omnichannel strategy. This study contributes to the field by offering an updated and comprehensive understanding of omnichannel interaction services in health care and provides valuable insights for health care providers considering this strategy. The ultimate goal of an omnichannel strategy in health care is to improve patient engagement, increase access to care, and reduce costs while improving communication and collaboration among health care providers. The successful implementation of this strategy requires a well-defined plan, robust technology, infrastructure, data analytics, capabilities, trained professionals, and a basic understanding of the communication channels among patients. The adoption of an omnichannel strategy in health care can lead to new business growth and increased patient engagement, but health care institutions must be properly aligned and patients must be prepared for its implementation.

Keywords: AI, artificial intelligence, RQ, research questions, SWOT, strengths, weaknesses, opportunities, and threats, UX, user experience


Conference Paper
17th International Conference, HAIS 2022
Carlos Alves, António Chaves, Carla Rodrigues, Eduarda Ribeiro, António Silva, Dalila Durães, José Machado, Paulo Novais

Survey for Big Data Platforms and Resources Management for Smart Cities

Abstract: Currently, smart cities are a hot topic and their tendency will be to optimize resources and promote efficient strategies for the preservation of the planet as well as to increase the quality of life of its inhabitants. In this sense, this research presents an initial component of investigation about Big Data Platforms for Smart Cities in order to be implemented in integrated and innovative solutions for development in urban centers. For this, a survey was carried out on “Big Data Platforms”, “Data Science Platforms”, “Security & Privacy” and “Resources Management”. The extraction of the results of this research was done through the SCOPUS repository in articles from the last 5 years to conclude what has been done so far and what will be the trends in the coming years, define proposals for possible solutions for smart cities and identify the right technologies for the design of a smart city architecture.

Keywords: Big data platform, Data science, Security, Privacy, Internet of Things


Journal Article
Applied Sciences
Regina Sousa, Rui Miranda, Ailton Moreira, Carlos Alves, Nicolas Lori, José Machado

Software tools for conducting real-time information processing and visualization in industry: An up-to-date review

Abstract: The processing of information in real-time (through the processing of complex events) has become an essential task for the optimal functioning of manufacturing plants. Only in this way can artificial intelligence, data extraction, and even business intelligence techniques be applied, and the data produced daily be used in a beneficent way, enhancing automation processes and improving service delivery. Therefore, professionals and researchers need a wide range of tools to extract, transform, and load data in real-time efficiently. Additionally, the same tool supports or at least facilitates the visualization of this data intuitively and interactively. The review presented in this document aims to provide an up-to-date review of the various tools available to perform these tasks. Of the selected tools, a brief description of how they work, as well as the advantages and disadvantages of their use, will be presented. Furthermore, a critical analysis of overall operation and performance will be presented. Finally, a hybrid architecture that aims to synergize all tools and technologies is presented and discussed.

Keywords: real time information processing; Complex Event Processing (CEP); data visualization; Power BI; Kafka; Spark; Tableau


Conference Paper
International Conference on Information Technology & Systems
Carlos Alves & José Luís Reis

The Intention to Use e-commerce Using Augmented Reality - The Case of IKEA Place

Resume: The evolution of technologies stimulates the e-commerce market. Recently, augmented reality has been creating significant value in the retail sector. This study aims to analyse an application, IKEA Place, which allows consumers to shop online using augmented reality technology without the need for a marker to identify the surface (Markerless Augmented Reality). The model to evaluate this study was based on the constructs of Technology Acceptance Model (TAM) and other models. The sustainability of the study is exploratory and involves identifying whether this application aims to create more confidence and convenience in the acquisition of a product through the support of this technology. The study was carried out in the North of Portugal, obtaining a convenience sampling in the Porto and Braga regions. The results concluded that there are no significant differences based on sociodemographic data, the operating system used, familiarity with the organization related to the intended use. In contrast, technology changes have been found to offer consumers more confidence and convenience of purchase. Significant results were also obtained in terms of user experience, the preference of this application to make online purchases over existing channels, the future use of such technologies by users to purchase a product and the attraction of purchase regarding perceived ease of use of the application under analysis.

Keywords: Augmented reality, e-commerce, TAM, IKEA Place, Intent to use,


Artigo Científico
RISTI - Revista Ibérica de Sistemas e Tecnologias de Informação
José Luís Reis & Carlos Alves

A Realidade Aumentada - Aplicação no âmbito Militar e a validação através do Modelo de Aceitação de Tecnologias

Resumo: A Realidade Aumentada (RA) permite construir e adicionar objetos virtuais num espaço real, seja através de vídeo ou de uma projeção numa superfície transparente. A defesa militar está cada vez mais interessada na RA, pois é uma tecnologia que permitir uma melhor visão geral do campo de batalha. Este trabalho reúne informações sobre a RA, sendo apresentadas algumas aplicações da RA no âmbito militar e informações sobre o modelo TAM - Technology Acceptance Model. No âmbito militar o TAM tem sido utilizado em estudos sobre aceitação de uma nova tecnologia projetada para uso em ambiente de treino por alunos militares. Neste trabalho apresenta-se uma solução genérica que permite usar o TAM numa situação de teste de tecnologias de RA no âmbito militar, sendo referidos aspetos relacionados com o quadro de referência e modelo concetual, metodologias de investigação, técnicas de recolha e análise de dados a adotar.

Palavras-chave: Realidade Aumentada, Defesa Militar, Modelo de Aceitação de Tecnologias – TAM.


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