ESTiG - Resumos em Proceedings Não Indexados à WoS/Scopus
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- Acceptance and familiarization with wearable devices in Portugal and BrazilPublication . Lopes, Isabel Maria; Rocha, João; Oliveira, PedroThis research sought to understand the acceptance of wearable devices in Portugal and Brazil, analyzing aspects such as demographic profiles, experiences with technology and personal perceptions. An adaptation of the UTAUT2 model was made, obtaining responses from university students and frequent internet users through a questionnaire that used the Likert scale. The evaluation of the data indicated a predominance of participants from Portugal, a tendency for acceptance to be more pronounced among younger people, those with a higher level of education and a greater technological proficiency among men and more qualified individuals. The relationship between users and non-users of wearable devices proved to be balanced, with a more marked acceptance by people aged 35 to 59, women and those who have a positive view of technology. The Smartwatch stood out among the devices, followed by the Fitness Bracelet and the Smart Ring. A variation in social influence was observed according to the type of device, being more striking in the case of Smartwatches. Surprisingly, social influence did not prove to be as crucial in the acceptance of wearable devices as initially thought. The findings show a trend towards the adoption of these devices, while also warning of challenges linked to the perceived value and price of products, signaling an area with great potential for future research and innovation.
- Acorn pre-drying: implications for the food industryPublication . Farrero, Bernardo; Ribeiro, Luís Frölén; Famiglietti, Antonio; Babo, PedroIn industry, 74% of the energy consumed is used in the form of heat. The food sector is characterised by a high share of processes that rely on industrial heat [1]. However, 90% of this thermal energy currently comes from fossil fuels, and only 9% is supplied by renewable sources [2]. The adoption of solar thermal technologies in the food industry offers multiple benefits that support its viability as an energy alternative to overcome this caveat. Firstly, by relying on a renewable and stable source. Manufacturers can reduce production costs and limit their exposure to the volatility of fossil fuel prices, thereby ensuring greater long-term price stability and predictability [3]. These reductions in energy costs may also be reflected in lower prices for the end consumer. Solar-assisted dehydration enables a decrease in moisture content, thereby limiting microbial growth and food spoilage [3]. In this regard, Solar Heat for Industrial Processes (SHIP) may also address food security concerns as storage losses are estimated to reach up to 20%, posing a critical challenge to food security [4]. The installation of in-situ pre-dehydration systems near harvesting zones provides clear benefits for energy efficiency and product quality. The Iberian Peninsula, notably, benefits from very high solar radiation, with many clear-sky days and extended sunlight periods, making it particularly suitable for solar-based pre-dehydration systems. By lowering produce weight and moisture before transportation, these systems decrease fossil energy demand during both industrial drying and large-scale transport [5]. This approach reduces the final product cost, as demonstrated by an in-situ solar dryer used for acorns in Alentejo holm oak groves. The passive, indirect mobile dryer, fitted with hanging bags, reduces acorn moisture content by 15% after 72 hours of drying, delays fruit spoilage, and cuts large-scale industrial heat input [6,4]. Thermal energy data from a factory case at Landratech, an acorn food producer involved in the MEDACORNET project, indicate that 15% in-situ pre-dehydration cuts thermal energy use by 52% during both initial and final drying stages of acorn flour manufacture [3]. This combined method lowers fossil fuel use, reduces losses, improves energy efficiency, and supports sustainability in the food processing sector.
- Defining industrial tourism in the cross-border region of Portugal and SpainPublication . Scalabrini, Elaine C.B.; Alves, Francisco; Neto, Reginaldo; Teixeira, Felipe L.; García, Joaquín; Velasco, Míguel; Teixeira, João Paulo; Vaz, Roberto Ivo; Fernandes, Paula OdeteThis paper deals with the definition and valorisation of industrial and pre-industrial tourism in the crossborder region of Terras de Trás-os-Montes (Portugal) and Castilla y León (Spain). Industrial and preindustrial heritage is crucial to collective memory and has significant cultural, historical and tourist value. Industrial tourism is emerging as an initiative that enhances historic landscapes and contributes to urban development, the revitalisation of communities and the preservation of heritage. It is considered an innovative strategy for rehabilitating territories, transforming old facilities into attractions, exploring historic sites or operating companies. The “IN_GENIOS_DUERO_DOURO” project focused on promoting this heritage in the Douro-Duero Euroregion. The methodology included detailed mapping and characterisation, creating a database with 1,079 sites identified in 22 Portuguese and 80 Spanish municipalities. The results show that most sites are in Spain (77.1 %). The municipalities with the most identified sites are Valladolid (250) in Spain and Mirandela (32) in Portugal. The main heritage categories include transport infrastructure (335), wineries (255) and the food industry (221). Around 47.27 per cent of the sites identified are accessible to tourists. The database created is fundamental for valuing, safeguarding and designing tourist routes.
- Os + e os - envelhecidos na União EuropeiaPublication . Praça, Lídia GalvãoEstatísticas sobre o envelhecimento da população na União Europeia (UE), à semelhança de outras regiões do globo, apontam para um crescimento contínuo. Uma das formas de analisar a sua evolução pode ser através do IE-índice de envelhecimento, que relaciona a população com 65 e + anos com a população dos 0 aos 14 anos. É objetivo deste trabalho, usar este índice, de forma a evidenciar os estados membros, mais e os menos envelhecidos na UE, bem como as principais oscilações ocorridas entre os mesmos, a partir da viragem do século até à atualidade (¼ de século).
- Graph applications and orientation for exhibition spacesPublication . Càndito, Cristina; Pacheco, Maria F.The research investigates the application of some mathematical tools for the analysis and design of architectural paths and spaces. The aim is not to attribute the phenomenon of architectural space configuration to automatic mechanisms but rather to verify the effectiveness of systematic analysis to establish relationships between paths and built environments, particularly in the context of exhibition spaces. For this purpose, the concept of the graph is introduced, within its historical context, linked to its formulation for defining cyclical paths without repetition. Additionally, its role in Space Syntax studies is explored, where it serves as a tool for analysing spatial connections. The formulation of cyclical paths without repetition, and in its dimension, was developed in the Space Syntax studies to indicate spatial connections. A qualitative approach has also been explored. A development in the qualitative field has also been experimented with regard to the characteristics influencing orientation linked to simplifying the distributive graphs of the environments, which can also lead to the evaluation of alternative spatial geometries. This approach enables the assessment of alternative spatial geometries.
- Reabilitação energética de edifícios de habitação - influência da fase de vida dos proprietários na tomada de decisãoPublication . Abreu, Maria Isabel; Oliveira, Rui; Lopes, JorgeAs políticas energéticas ainda refletem pouco o facto de os proprietários de habitações serem um grupo heterogéneo quando se trata de compreender o que está subjacente à sua decisão de proceder a melhorias energéticas nas suas habitações. A análise deste tipo de processos decisórios num contexto abrangente e multidisciplinar, onde não entram apenas as habituais variáveis sociodemográficas, mas também as ligadas à vida pessoal, doméstica e social é ainda pouco usual em Portugal. Com especial enfoque nestes três últimos tópicos, este estudo tem como objetivo aprofundar o conhecimento existente sobre influência da fase de vida dos proprietários portugueses na decisão de levar a cabo melhorias energéticas. Neste sentido, foi realizada uma investigação exploratória baseada na recolha de informação por inquérito. Os resultados reforçam que há um importante condicionamento da fase de vida dos proprietários na sua atitude e comportamento perante a renovação energética da sua habitação, quase sempre interrelacionados com a vida do agregado familiar e com o seu contexto social. Os proprietários portugueses mais novos parecem ser grandemente abertos aos argumentos ambientais e da eficiência energética. As dinâmicas e rotinas da sua vida doméstica favorecem uma decisão de renovação, na qual frequentemente se envolvem, quer planeando quer intervindo diretamente fazendo. Mas é na meia idade que as renovações energéticas estão muito associadas a razões estéticas, estilo de vida e normas sociais. Os mais velhos são os mais relutantes a disrupções na sua vida e preferem eventos únicos de reabilitação. Os significados afetivos da casa para a família, a funcionalidade e o conforto são fatores bem mais relevantes do que as normas sociais. De salientar um aspeto de cariz transversal que são os momentos-chave de vida, que a ciência comportamental denomina de “janelas de oportunidade”, e que influenciam enormemente o desencadear de uma intenção e ação de renovação.
- Reciclagem de resíduos urbanos no progresso dos ODS e ESGPublication . Praça, Lídia GalvãoNeste trabalho pretende-se analisar o contributo da reciclagem de resíduos urbanos para o (in)cumprimento dos ODS e ESG, através da análise da evolução da taxa de reciclagem desde 2000 até 2023, para Portugal e Espanha no contexto da União Europeia (UE). Evidenciam-se as respetivas posições no ranking da UE e identificam-se também os Estados Membros que ao longo deste período ocuparam o 1º lugar (os que mais reciclam), bem como os que têm ocupado o extremo oposto (os que menos reciclam), permitindo uma perceção, ainda que incompleta, sobre as dificuldades no alcance das metas previstas pela Agenda 2030, para a sustentabilidade. Foram usados dados estatísticos do Gabinete de Estatística da UE (Eurostat), complementados com outras bases de dados (INE e Pordata), e uma metodologia do tipo estatística descritiva. Os resultados apurados permitem concluir que a reciclagem de resíduos urbanos, de um modo geral, tem vindo a melhorar na UE, mas, lentamente e a ritmos bastante diferentes entre os vários Estados Membros, não contribuindo, em alguns casos, como era necessário e desejável para o progresso dos ODS / ESG, e comprometendo por essa via, o grande objetivo da Sustentabilidade.
- Sustainable university campuses and the city - a case studyPublication . Abreu, Maria Isabel; Lopes, Jorge; Oliveira, RuiThe importance of sustainable university campuses extends nowadays beyond the boundaries of the university to the urban surroundings. By adopting sustainable practices these spaces can contribute to the quality of life in cities. There is nowadays a search for integration between campuses and cities, exploring new models for their joint growth, which requires a deep understanding of their relationship. This study aimed to understand what is behind the adoption of outdoor spaces on campuses by common citizens. The research methodology was based on a case study by means of a qualitative analysis method with data collection through observation and interviews. The case study is the Santa Apolónia Campus of the Polytechnic Institute of Bragança in Portugal. Housed on a former farm, the campus is in the heart of the city and includes extensive green areas accessible to the urban community. The results revealed that citizens make use of the campus in different ways. They cross it as part of their daily urban mobility and use it both as a recreational area and as a ground for farming due to the existence of community gardens. The results suggest also that the campus is considered indistinctly from other public spaces which is strongly connected with the search for certain conditions of well-being, particularly regarding outdoor thermal comfort, nature connection, and urban leisure. This search seems to be the engine that connects ordinary citizens to outdoor spaces on campus. The results also reinforce the significant role that the location of campuses in the city center and their sustainable spatial design and configuration can play in the campus-city connection. Of relevance in this case were the spaces that enable people to meet and socialize, such as the vegetable gardens, which seem to have a distinct influence on reinforcing citizens' sense of belonging to the campus.
- Tourism in transition: financial sustainability as a compass for resiliencePublication . Fernandes, António B. ; Ferreira, Jessica; Seidi, Fadiba; Cardim, SofiaPurpose: This study aims to analyse the economic and financial sustainability of companies in the tourism sector in Portugal, focusing on Divisions 55 - Accommodation and 56 - Food and Beverage Service Activities, based on the Return on Assets (ROA) indicator, to identify performance differences over time, by firm size and across regions. The methodological choice to use ROA is due to its robustness and the possibility of comparison in longitudinal and cross-sectional evaluations. Methodology: The analysis is based on a sample of 8,735 companies, corresponding to 113,559 observations between 2011 and 2023. The main variable used was Return on Assets (ROA). After checking for the absence of normality and homogeneity of variances, robust statistical methods were applied, namely Welch's ANOVA and the Games-Howell post hoc test using bootstrapping, in order to guarantee reliability in the inferences. Results: The results showed statistically significant differences in the economic and financial sustainability of companies over the years, between companies of different sizes and between regions. Small companies had a higher average ROA than micro, medium and large companies. Regionally, the Algarve stood out for its better performance, unlike the Autonomous Region of the Azores, which recorded the worst average ROA results. Research limitations: The analysis focused exclusively on quantitative financial performance indicators and did not include qualitative variables that could enrich the understanding of the factors that condition sustainability. Additionally, the lack of statistical normality and the heterogeneity of the sample limited the application of conventional parametric tests. Originality: The study contributes to the literature by offering a longitudinal and regional perspective on financial sustainability in the tourism sector in Portugal (Divisions 55 - Accommodation and 56 - Food and Beverage Service Activities), with a robust approach. It also emphasises the role of small businesses as vectors of resilience and the importance of defining public policies that are differentiated according to territorial context.
- Working capital and financial performance in portuguese accommodation companiesPublication . Fernandes, António B. ; Cardim, Sofia; Ferreira, Jessica; Pinto, LígiaPurpose: This study aims to analyse the impact of Working Capital on the Free Cash Flow of Portuguese companies that operate under the Division 55 Accommodation, and that represent the main companies in the tourism sector. Methodology: The research used a sample of 2,227 companies, with a total of 26,689 observations between 2011 and 2023, obtained from the Sistema de Análise de Balanços Ibéricos database. A multiple linear regression was developed based on financial data from companies in Division 55 and 12 research hypotheses were formulated and tested, in order to analyse the impact of different components of working capital in determining the free cash flow of companies in the Accommodation sector. Results: The variation in working capital proved to have a negative and statistically significant impact on the free cash flow of the companies analysed. It was also found that all the variables studied have a significant influence on the model, explaining around 60 per cent of the variation in Free Cash Flow. Research limitations: The study focuses only on a specific sector, which may limit the generalisation of the results to other economic sectors. Originality: This research contributes to the literature by empirically evaluating the relationship between working capital and free cash flow in the Accommodation sector in Portugal, which is a relevant sector for Gross Domestic Product and its companies are characterised by several specificities.