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Publications

2024

Theorising Resilience in Times of Austerity

Authors
O’loughlin, D; Szmigin, I; McEachern, G; Karantinou, K; Barbosa, B; Lamprinakos, G; Fernández Moya, ME;

Publication
Researching Poverty and Austerity: Theoretical Approaches, Methodologies and Policy Applications

Abstract
Resilience is an important theoretical construct that helps to conceptualise the ways individuals and organisations attempt to countervail the effects of poverty and austerity. As a response to prolonged crises, such as the global economic crisis and the COVID-19 pandemic, this chapter focuses on tracing the psychological, behavioural, sociological and spatial perspectives of resilience, advancing our current understanding of resilience theory within the marketing and consumption context of crises and austerity. The chapter reviews recent research exploring the importance of resilience and, more specifically, the notion of persistent resilience in response to long-term stressors, such as unemployment, triggered by the austerity measures imposed by European governments following the global economic crisis as well as the COVID-19 pandemic. In advancing previous research in this area, we offer a broader perspective by underlining the impetus for businesses and communities to employ a range of resilience strategies while also highlighting the importance for individuals to develop a sustainable set of resilience capacities to help creatively navigate the market and flexibly adapt to the long-term effects of intense and long-standing crises © 2024 selection and editorial matter, Caroline Moraes, Morven G. McEachern and Deirdre O’Loughlin; individual chapters, the contributors. All rights reserved.

2024

Automatic Food Labels Reading System

Authors
Pires, D; Filipe, V; Gonçalves, L; Sousa, A;

Publication
WIRELESS MOBILE COMMUNICATION AND HEALTHCARE, MOBIHEALTH 2023

Abstract
Growing obesity has been a worldwide issue for several years. This is the outcome of common nutritional disorders which results in obese individuals who are prone to many diseases. Managing diet while simultaneously dealing with the obligations of a working adult can be difficult. Today, people have a very fast-paced life and sometimes neglect food choices. In order to simplify the interpretation of the Nutri-score labeling this paper proposes a method capable of automatically reading food labels with this format. This method is intended to support users when choosing the products to buy based on the letter identification of the label. For this purpose, a dataset was created, and a prototype mobile application was developed using a deep learning network to recognize the Nutri-score information. Although the final solution is still in progress, the reading module, which includes the proposed method, achieved an encouraging and promising accuracy (above 90%). The upcoming developments of the model include information to the user about the nutritional value of the analyzed product combining it's Nutri-score label and composition.

2024

Weather and Meteorological Optical Range Classification for Autonomous Driving

Authors
Pereira, C; Cruz, RPM; Fernandes, JND; Pinto, JR; Cardoso, JS;

Publication
IEEE Trans. Intell. Veh.

Abstract

2024

CO2 Emissions Resulting from Large-Scale Integration of Electric Vehicles Using a Macro Perspective

Authors
Monteiro, F; Sousa, A;

Publication
APPLIED SCIENCES-BASEL

Abstract
Smart grids with EVs have been proposed as a great contribution to sustainability. Considering environmental sustainability is of great importance to humanity, it is essential to assess whether electrical vehicles (EVs) actually contribute to improving it. The objectives of the present study are, from a macro (broad-scope) perspective, to identify the sources of emissions and to create a framework for the calculation of CO2 emissions resulting from large-scale EV use. The results show that V2G mode increases emissions and therefore reduces the benefits of using EVs. The results also show that in the best scenario (NC mode), an EV will have 32.7% less emissions, and in the worst case (V2G mode), it will have 25.6% more emissions than an internal combustion vehicle (ICV), meaning that sustainability improvement is not always ensured. The present study shows that considering a macro perspective is essential to estimate a more comprehensive value of emissions. The main contributions of this work are the creation of a framework for identifying the main contributions to CO2 emissions resulting from large-scale EV integration, and the calculation of estimated CO2 emissions from a macro perspective. These are important contributions to future studies in the area of smart grids and large-scale EV integration, for decision-makers as well as common citizens.

2024

Spectral data augmentation for leaf nutrient uptake quantification

Authors
Martins, RC; Queirós, C; Silva, FM; Santos, F; Barroso, TG; Tosin, R; Cunha, M; Leao, M; Damásio, M; Martins, P; Silvestre, J;

Publication
BIOSYSTEMS ENGINEERING

Abstract
Data scarcity is a hurdle for physiology-based precision agriculture. Measuring nutrient uptake by visible-near infrared spectroscopy implies collecting spectral and compositional data from low-throughput, such as inductively coupled plasma optical emission spectroscopy. This paper introduces data augmentation in spectroscopy by hybridisation for expanding real-world data into synthetic datasets statistically representative of the real data, allowing the quantification of macronutrients (N, P, K, Ca, Mg, and S) and micronutrients (Fe, Mn, Zn, Cu, and B). Partial least squares (PLS), local partial least squares (LocPLS), and self-learning artificial intelligence (SLAI) were used to determine the capacity to expand the knowledge base. PLS using only real-world data (RWD) cannot quantify some nutrients (N and Cu in grapevine leaves and K, Ca, Mg, S, and Cu in apple tree leaves). The synthetic dataset of the study allowed predicting real-world leaf composition of macronutrients (N, P, K, Ca, Mg and S) (Pearson coefficient correlation (R) 0.61-0.94 and standard error (SE) 0.04-0.05%) and micronutrients (Fe, Mn, Zn, Cu and B) (R 0.66-0.91 and SE 0.88-3.98 ppm) in grapevine leaves using LocPLS and SLAI. The synthetic dataset loses significance if the real-world counterpart has low representativity, resulting in poor quantifications of macronutrients (R 0.51-0.72 and SE 0.02-0.13%) and micronutrients (R 0.53-0.76 and SE 8.89-37.89 ppm), and not allowing S quantification (R = 0.37, SE = 0.01) in apple tree leaves. Representative real-world sampling makes data augmentation in spectroscopy very efficient in expanding the knowledge base and nutrient quantifications.

2024

Hybrid Localization Solution for Autonomous Mobile Robots in Complex Environments

Authors
Rebelo, PM; Valente, A; Oliveira, PM; Sobreira, H; Costa, P;

Publication
ROBOT 2023: SIXTH IBERIAN ROBOTICS CONFERENCE ADVANCES IN ROBOTICS, VOL 1

Abstract
Mobile robot platforms capable of operating safely and accurately in dynamic environments can have a multitude of applications, ranging from simple delivery tasks to advanced assembly operations. These abilities rely heavily on a robust navigation stack, which requires stable and accurate pose estimations within the environment. The wide range of AMR's applications and the characteristics of multiple industrial environments (indoor and outdoor) have led to the development of a flexible and robust robot software architecture that allows the fusion of different data sensors in real time. In this way, and in terms of localization, AMRs have greater precision when it comes to uncontrolled and unstructured environments. These complex environments feature a variety of dynamic and unpredictable elements, such as variable layouts, limited visibility, unstructured spaces, and uncertain terrain. This paper presents a multi-localization system for industrial mobile robots in complex and dynamic industrial scenarios, based on different localization technologies and methods that can interact together and simultaneously.

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