Digital twin technology offers immersive and cost-effective solutions for workforce training, yet its practical implementation within SME training frameworks remains limited. This study develops and evaluates the Digital Twin Framework for Workforce Training (DT4WFT), addressing key challenges such as resource constraints and precision through tools like Siemens NX Mechatronic Concept Design (MCD) and StoneCUT@Line^®. Employing a mixed-methods approach, qualitative insights from managers, and quantitative analysis demonstrated the framework’s potential to enhance operator performance, improve efficiency, and reduce lead times. However, the validation was based solely on managerial perceptions, as the framework has not yet been implemented in real-world settings. Statistical analysis confirmed strong correlations between the framework’s perceived implementation and improved training outcomes, highlighting its scalability and adaptability. Future research should focus on practical implementation, cross-industry applications, and longitudinal studies to evaluate sustained impacts, ensuring the DT4WFT framework’s broader relevance and effectiveness in workforce development.

This paper aims to compare the perceptions of hotel customers and hotel staff regarding the value of green hotel attributes. By examining both stakeholder groups, the study addresses a gap in sustainable hospitality research, which largely overlooks employee perspectives in favour of customer preferences. An exploratory, cross-sectional survey was conducted using structured questionnaires, administered to hotel guests (n = 307) and hotel staff (n = 89) in Porto, Portugal. Respondents rated 15 green hotel attributes using a five-point Likert scale. Demographic data were also collected to analyse perceptual differences across gender, age, income, and education. The results revealed that both customers and staff exhibited environmental awareness, though their prioritisation of specific green practices differed. Customers tended to value visible environmental measures, such as recycling bins, energy-saving light bulbs, and renewable energy signage, while staff placed greater emphasis on operational sustainability aspects, including low-flow plumbing fixtures, refillable soap dispensers, and durable goods used in service areas. These differences reflect the stakeholders’ distinct roles and experiences within the hotel ecosystem. This study enriches the discourse on sustainable hospitality by providing a dual-stakeholder analysis of green hotel attributes using a shared evaluative framework. The findings offer practical insights for hotel managers aligning sustainability strategies with the expectations of both guests and employees, supporting more effective and inclusive green implementation in the lodging sector.

The concept of open innovation is gaining popularity in both the world of engineering and management. However, despite this growing interest, most existing studies tend to focus mainly on large companies. Thus, the purpose of this paper is to explore the drivers of the implementation of the open innovation concept in SMEs. This study uses a survey carried out through an online questionnaire that was sent to some Portuguese SMEs. The results show that there is a high level of receptivity to implement open innovation. The findings also suggest the existence of a positive relationship between the application of open innovation and the level of satisfaction with the R&D unit’s performance. Overall, SMEs seem to be more motivated to apply open innovation to improve their innovation process and capacity than to reduce costs, share innovation risks, or improve reputation. Moreover, findings also demonstrate that the main drivers for the adoption of open innovation vary along with company size. For micro-enterprises, the main driver is to complement internal skills. Small enterprises look for the most effective way to develop new products and services whilst medium-sized enterprises are mainly driven to monitor market trends and improve their innovation process.

This study investigates the perceptions and practices of Portuguese higher education students regarding the circular economy (CE), emphasising their knowledge, attitudes, and behaviours toward sustainable resource management. Carried out by the Working Group on Circular Economy and Waste Management of the Portuguese Sustainable Campus Network (RCS), the research used an online survey targeting students from 20 higher education institutions (HEIs), resulting in 400 responses. The findings indicate that while students generally hold positive views of the CE, their understanding of its practical applications, such as waste reduction and resource efficiency, remains limited. Only a small proportion of students reported exposure to CE-related topics in their curriculum, revealing a gap in academic integration. This study also identifies significant demographic variations in CE awareness and practices, influenced by factors such as age, field of study, and employment status. These insights underscore the need for HEIs to strengthen CE education and actively involve students in hands-on sustainability initiatives, fostering a generation equipped to drive the transition toward a circular economy.

The research highlights the transformative potential of digital twins in addressing workforce training gaps while emphasizing the importance of secure and reliable communication protocols. Future directions include expanding the framework to other traditional industries, incorporating adaptive artificial intelligence, and exploring long-term impacts on workforce productivity and organizational innovation. This study provides a robust foundation for integrating digital twin technology into SME training strategies, ensuring sustained competitiveness and growth in rapidly evolving markets.