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Publicações

Publicações por António Manuel Amaral

2022

Cybersecurity Challenges in Healthcare Medical Devices

Autores
Longras, A; Mendes Pereira, TS; Amaral, A;

Publicação
Internet of Everything - The First EAI International Conference, IoECon 2022, Guimarães, Portugal, September 16-17, 2022, Proceedings

Abstract
Medical devices are rapidly evolving and becoming more interconnected with healthcare networks, overcoming resource constraints, and increasingly focused on patient well-being and needs. This work intends to identify future research themes in the area of cybersecurity in health by surveying the articles being developed and identifying their current limitations and future work. The developed analysis was based on the publications with the highest number of citations, enabling us to find several challenges and restrictions such as integrating devices in systems. Innovations and the emergence of new technologies with inherent security vulnerabilities, will continue to evolve, escalating the attackers interest in exploiting unknown cybersecurity risks within healthcare. It is mandatory to consider cybersecurity risks since the conception of the devices to reduce security flaws, ensure the patients with a better quality of life, and guarantee information security properties. © 2023, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.

2023

Towards sustainable last-mile logistics: A decision-making model for complex urban contexts

Autores
Silva, V; Amaral, A; Fontes, T;

Publicação
SUSTAINABLE CITIES AND SOCIETY

Abstract
E-commerce growth is raising the demand for logistic activities, especially in the last-mile, which is considered the most ineffective part of the supply chain and a negative externalities source. Although various solutions aim to address these issues, selecting the best one is challenging due to multiple perspectives, conflicting criteria, trade-offs, and complex and sensitive urban contexts. This article proposes a 4-level hierarchical model based on the triple bottom line of sustainability that may assist decision-makers in selecting the most adequate last -mile solution for historic centers. The model was defined based on a systematic literature review; evaluated by interviewing a set of experts; and quantified according to an AHP-TOPSIS approach. This quantification focused on the historic center of Porto, Portugal. The experts considered all three sustainability dimensions similarly important. Air pollution was the most valued sub-criterion whereas Visual pollution was the least. 67 decision-maker profiles were defined, showing that environmentally oriented decision-makers prefer cargo bikes, while decision-makers who prioritize economic and social factors prefer parcel lockers. All last-mile solutions considered in the model yielded similar results, therefore suggesting a combined distribution strategy. Nevertheless, the use of parcel lockers is the most favorable solution for Porto's historic center.

2023

Linking information systems team resilience to project management success

Autores
Varajäo, J; Fernandes, G; Amaral, A;

Publicação
PROJECT LEADERSHIP AND SOCIETY

Abstract
Team resilience is a critically essential contributor to team effectiveness. However, the impact of team resilience on project management success has been little studied. This article aims to investigate the influence of team resilience on project management success in the context of information system projects. Using a quantitative study, we show that there is a significant positive relationship between project team resilience and project management success. As a result of this finding, we stress the importance of developing actions to promote team resilience to increase the likelihood of project management success, particularly in unstable environments.

2024

Development of a Cost Estimation Model in a Furniture Manufacturer

Autores
Reis F.; Amaral A.; Oliveira M.; Ferreira F.A.; Pereira M.T.;

Publicação
Lecture Notes in Mechanical Engineering

Abstract
This work was developed to improve the costing process of new products within the Product Development Department of a furniture manufacturer. It consisted of creating a parametric cost estimation model based on applying simple and multiple linear regressions, considering the existing data of the products produced and their respective costs. The proposed model considers the cost estimation of creating a product that covers the materials and operations costs. The suitability of the different independent variables was studied by applying simple and multiple linear regressions. A set of functions that return an estimate of the cost as a function of these predictor variables was obtained. The model built with the functions obtained provides the materials and operations cost estimation. The results indicated that 75% of the tests performed show an estimation error of less than 2% in the total cost of a product. Incorporating this model in a tool with the purpose of cost estimation brings the ability to predict prices faster, improving the internal process of obtaining costing and enhancing the analytical capacity of the team in the relentless pursuit of cost minimization and value creation.

2011

Knowledge management and the organisational learning: Towards a framework definition

Autores
Amaral, A; Araujo, M;

Publicação
Handbook of Research on Business Social Networking: Organizational, Managerial, and Technological Dimensions

Abstract
The process of learning is emphasised in all organisations as a way to improve performance, to more effectively manage projects, processes, and activities, and thus, it is of extreme importance to the business in general, because it enables sustainable competitive advantage. However, organisations do not seem to learn from their mistakes, rarely exploring the reasons for their projects' success or failure, and very rarely applying those lessons learned to the business management. In fact, there is little or no point in learning unless management adapts its behavior accordingly. Our proposal is aimed at creating an organisational framework for managing the knowledge produced, as well as incorporating the lessons learned in the daily organisational routines. The purpose is to better respond to the problems that may occur and therefore, strategically realign the organisation towards efficiency and results improvement. © 2012, IGI Global.

2009

The organizational strategy as a central process for project portfolio selection

Autores
Amaral, A; Araujo, M;

Publicação
WMSCI 2009 - The 13th World Multi-Conference on Systemics, Cybernetics and Informatics, Jointly with the 15th International Conference on Information Systems Analysis and Synthesis, ISAS 2009 - Proc.

Abstract
Despite all the differences on markets, cultural environment, and organizational objectives, some changes are modifying the way business occurs, turning competitive advantages difficult to accomplish. In a global marketplace scenario, changes are constant and with variable amplitude. Organizations need to be alert to all movements to counter-answer and re-align themselves with the new market conditions. Thus, it is wise to develop a flexible strategy, where it is possible to monitor the market conditions and the overall performance of the organization. We propose a project portfolio management and evaluation framework which gathers important concepts and tools from different areas, like Organizational Strategy, Organizational Learning, Decision Support Systems (DSS), Project Portfolio Management and Organizational Maturity, fundamental for acquiring and developing competitive advantages, and, therefore, for increasing the organization's overall performance.

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