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Publicações

2024

The Nature of Questions that Arise During Software Architecture Design

Autores
Harrison, NB; Aguiar, A;

Publicação
SOFTWARE ARCHITECTURE, ECSA 2024

Abstract
During the process of software architectural design, numerous questions arise which must be answered. These questions may be about requirements on the proposed system (the problem space) or about how the system should be designed and developed (the solution space). As questions arise they may be answered immediately, deferred until later, or provisionally answered with an assumption about the answer. The objective of this work was to explore the nature of questions that arise during architecture. We explored the types of questions, how they are organized, how they are tracked, and how and when they are answered. We started by surveying highly experienced architects about their practices with respect to architectural questions. We also performed a controlled experiment with master students about organizing architectural questions that clarified and substantiated the survey data. We learned that architectural questions include slightly more questions about the problem space than the solution space, as well as a minority of questions related to the managing of the project. We found that architects often use ad hoc methods to organize and track them, although they typically organize them along more than one dimension. We learned also that, about a third of the time, architects make assumptions about the answers to architectural questions in order to make progress on the architecture. This suggests that some projects may have risks of incorrect design or later costly rework due to inadequate tracking or incorrectly answered architectural questions.

2024

Analysis of the Impact of Automation on a Workstation at an Industrial Company Using Simulation

Autores
Costa, C; Ferreira, LP; Ávila, P; Ramos, AL;

Publicação
Lecture Notes in Networks and Systems

Abstract
In everyday life, the production lines of companies are required to be flexible, rapidly adopting new processes and methods in order to ensure their competitiveness in the market. The main objective of this study was to analyze the impact of automation on a workstation at an industrial company which paints accessories. By means of simulation, one was able to identify several aspects that negatively affect the company’s overall capacity, namely reduced productivity and long cycle times. The digital tools developed through Visual Basic for Applications constituted the starting point for the automation of several repetitive and bureaucratic tasks which support decision-making, initiating the process of Digital Transformation at the organization. In economic terms, this improvement in the workplace can potentially reduce costs in the order of thousands of euros annually, in addition to increasing productivity thus improving the company’s general performance. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

2024

Towards Safer and Efficient Dowry Transactions: A Blockchain-Based Approach

Autores
Bria, MMS; Goncalves, R; Martins, J; Serodio, C; Branco, F;

Publicação
GOOD PRACTICES AND NEW PERSPECTIVES IN INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 3, WORLDCIST 2024

Abstract
The dowry payment system is used in the cultural context and tradition of certain financial transactions related to marriages and engagement. However, disputes, fraud, and financial gaps in exploitation occur in these systems, which affect user confidence. This study uses an exploratory approach to identify the main weaknesses of current traditional dowry payment systems and analyses the benefits that blockchain technology and smart contracts can provide. The proposed data security framework combines blockchain security features such as decentralisation, cryptography, and automatic verification through smart contracts to ensure the integrity and reliability of dowry payment transactions. In this study, we adopt the Design Science Research (DSR) methodology to propose producing and developing artefacts that support solving problems in the existing dowry payment system more efficiently. We will disseminate new ideas or concepts developed to indigenous communities in Timor-Leste using the Diffusion of Innovation (DOI) and Technology Acceptance Model (TAM) frameworks to ensure that the technological framework developed can be used safely and efficiently.

2024

Educação OnLIFE e Cidadania Digital: o desenvolvimento do pensamentocomputacional na cidade em tempos de algoritmização do mundo

Autores
Menezes, J; Schlemmer, E; Felice, MD;

Publicação
Educar em Revista

Abstract
RESUMO A cidadania digital é a cidadania do mundo algoritmizado, datificado, conectado, sensorizado, dos metaversos, multiversos, big data. É a expressão de um novo tipo de arquitetura do social, constituído na reticularidade pela contínua conectividade entre humanos e não humanos. Uma conexão AtoBit, simbiótica, que potencializa a emergência de uma nova ecologia feita de pessoas, dados, algoritmos, sensores, florestas, clima, vírus, cidades. Essa conexão nos desafia a uma nova política cognitiva no campo da Educação. O artigo apresenta o conceito de Cidadania Digital e problematiza formas de conhecer e produzir conhecimento relacionado ao desenvolvimento do pensamento computacional na Educação Básica. Tem por objetivo compreender como o pensamento computacional é potencializado e produzido na cidade. As experiências se desenvolvem a partir de práticas pedagógicas inventivas, simpoiéticas, intervencionistas e gamificadas. Como método de pesquisa, se apropria do método cartográfico de pesquisa-intervenção para produção e análise de dados. Os resultados baseiam-se em elementos presentes nas epistemologias reticulares e conectivas, na cognição inventiva e nos conceitos de ato conectivo transorgânico e habitar atópico. Tais resultados indicam o pensamento computacional sendo potencializado no coengendramento entre entidades humanas e não humanas, numa perspectiva de Educação OnLIFE cidadã, contribuindo para a sua compreensão interdisciplinar e transversal, bem como para a valorização da comunidade. Esses resultados apontam para a emergência de uma política cognitiva ecológica em educação, o que implica repensar o currículo e a formação docente.

2024

FlexiGen: Stochastic Dataset Generator for Electric Vehicle Charging Energy Flexibility

Autores
Cabral, B; Fonseca, T; Sousa, C; Ferreira, LL;

Publicação
CoRR

Abstract

2024

The Utility of the IWGDF Diabetes-Related Foot Ulcer Risk Classification Annual Reassessment in the Primary Care Setting – a Cohort Study

Autores
Monteiro-Soares, M; Dores, J; Alves Palma, C; Galrito, S; Ferreira-Santos, D;

Publicação

Abstract
Background: We assessed the pertinence of yearly updating the International Working Group on the Diabetic Foot (IWGDF) risk classification in people with diabetes by quantifying the changes in the risk group and its accuracy in identifying those developing an ulcer (DFU) in a primary care setting. Methods: In our retrospective cohort study, we included all people with diabetes with a foot as-sessment registry between January 2016 and December 2018 in the Baixo Alentejo Local Health Unit. Foot-related data was collected at baseline after one and two years. DFU and/or death until December 2019 were registered. The proportion of people changing their risk status each year was calculated. Accuracy measures of the IWGDF classification to predict DFU occurrence at one, two, and three years were calculated. Results: A total of 2097 people were followed for three years, during which 0.1% died, and 12.4% developed a DFU. After two years, 3.6% of the participants had progressed to a higher-risk group. The IWGDF classification presented specificity values superior to 90% and negative predictive values superior to 99%. Conclusion: Foot risk status can be safely updated every two years instead of yearly. The IWGDF classification can accurately identify those not at risk of DFU.

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