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The evolution of intelligent wheelchairs with new systems to control them and help the user to be more independent has been remarkable in recent years. Since these systems have a significant impact on the quality of life of people with disabilities, it is crucial that it is suited for the final user and does not put his life at risk. Initially, this study proposes a 3D motorised wheelchair model with robotic tools to be used in simulation environments and helps the development and validation of new approaches. This model uses Robotic Operating System (ROS) tools to help the addition of sensors and actuators. With the ROS-Nodes, it is easy to add new features and controllers. The Gazebo framework was used to create the simulation environments. After that, following previous work, it is proposed a wheelchair controller that receives commands from a multimodal interface and can control a real and simulated wheelchair at the same time. This work studies new wheelchair models and their respective controllers in a simulated environment and gradually test in real-world to obtain the final model with low costs and minimise engineering costs.

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Virtual reality technologies have grown in complexity and functionality, increasing their relevance in various sectors of activity. Applying these innovations to tourism is advantageous for the organisations, the tourists and even the territories. They can provide multisensory immersivity, simulate actions and movements in real-time, enriching reality using interactive virtual objects. Thus, captivating visitors and showing territories from richer and livelier perspectives. This study describes a review of the adoption of virtual reality technology at the organisational level. In order to adapt the literature review to the tourism topic, the process of analysis of the literature was carried out with a constant concern to analyse research that studied the topic. Assuming the need to further develop the work done and to obtain a confirmation on the contribution resulting from the bibliographic review, a focus group was developed, which allowed several specialists to discuss collaboratively and interactively the research project topics without having to be in face-to-face contact. The results of this study allow not only to acknowledge the relevance of virtual reality for tourism but also to understand how the existing literature and experts are aligned with the identification of opportunities for disruptive development of solutions that trigger tourism destinations and organisational development.

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This article was written to study and understand how social networks have changed the way we perceive and create relationships. The exponential increase of social media (SM) has become not only convenient, but also a common habit. It has changed people’s habits and brought a new way of being since the technology era arrived. Although there are several advantages in using these social networks, the uncontrolled use and abuse can be alarming, thus the importance of this research. There are plenty of papers related to the impact of social media on adolescent behaviour and on young people’s academic performance. However, this paper aims to examine the facts and provides a comparison of the effect of social media use between different age sectors: adolescents (between 10 and 17 years old), young adults (18–30), adults (31–45), older adults (46–65) and seniors (+66). In order to explore this issue, an online survey was developed. Using a sample of 358 participants, social media use was analysed by age sectors, focusing on the dependence, habits, the reasons/motivations for people to have these accounts, and how different generations perceive the future of social media. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020.

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The chemical-pharmaceutical sector is facing an unprecedented fast-changing environment, with new market and technological trends impacting the companies' operational strategies. Managing the pharmaceutical supply chain (PSC) operations is, therefore, ever more complex and challenging. The goal of this work is to present a comprehensive overview of the current state of the industry and research developments; and then, to develop a new decision-making reference framework to assist in the creation of optimization-based decision support models. This will be achieved through a multi-perspective analysis that encompasses strategic and tactical planning decision-making, in the current and future business context of the chemical-pharmaceutical industry. The findings reveal a lack of research addressing the most prominent trends currently driving this sector, such as patient centricity or new technological developments, thus highlighting the disruptive nature of the expected changes in a highly conservative industry.

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