Social Media and Negative Aspects of Well-Being: Does FOMO Play a Role?

Fear of missing out (FOMO) is a relatively new concept, however researchers have found that FOMO and social media use cause negative aspects of well-being, such as depression, anxiety, stress (Alabi, 2013; Alavi, 2011) and lack of academic motivation (Jacobsen and Forste, 2011). When using a correlational design, the current study examined the associations between social media engagement and negative aspects of well-being, while also examining the mediating role of FOMO between these variables. Participants (198 college students, M = 19 years old, 86 percent female, 74 percent Caucasian) completed online surveys, where participants reported on their levels of social media engagement (Alt, 2015), FOMO (Przybylski, 2013), depression, anxiety, stress (Antony, 1998), and academic motivation (Lockwood, 2002). Findings indicated that FOMO was a significant mediator for the associations between social media engagement and anxiety and stress. However, FOMO did not seem to mediate the relationship between social media engagement and depression and academic motivation. These findings supported previous research claiming that social media use can have negative effects on well-being (Alabi, 2013; Alavi et al., 2011); however, experimental research is needed to better understand the causation of these negative effects

ELF: The electronic learning facilitator

As the world‐wide computer network becomes ubiquitous, new tools have been developed, such as the World Wide Web (WWW), for the delivery of multimedia hypertext‐based documents. Similarly, there has been an explosion in the amount of email, bulletin boards, and Usenet News available. This has led to a major problem of information overload: we are slowly but surely being overwhelmed by the amount of information available to us

Modelling the influence of the process inputs on the removal of surface contaminants from Ti-6Al-4V linear friction welds

The linear friction welding (LFW) process is finding increasing interest from industry for the fabrication of near-net-shape, titanium alloy Ti–6Al–4V, aerospace components. Currently, the removal of surface contaminants, such as oxides and foreign particles, from the weld interface into the flash is not fully understood. To address this problem, two-dimensional (2D) computational models were developed using the finite element analysis (FEA) software DEFORM and validated with experiments. The key findings showed that the welds made with higher applied forces required less burn-off to completely remove the surface contaminants from the interface into the flash; the interface temperature increased as the applied force was decreased or the rubbing velocity increased; and the boundary temperature between the rapid flash formation and negligible material flow was approximately 970 °C. An understanding of these phenomena is of particular interest for the industrialisation of near-net-shape titanium alloy aerospace components.EPSRC, Boeing Company, Welding Institut

High electrical conductance enhancement in Au-nanoparticle decorated sparse single-wall carbon nanotube networks

The authors thank the Engineering and Physical Science Research Council for funding through the Imperial College London/Queen Mary Unive

Modelling of the workpiece geometry effects on Ti–6Al–4V linear friction welds

Linear friction welding (LFW) is a solid-state joining process that is finding increasing interest from industry for the fabrication of titanium alloy (Ti–6Al–4V) preforms. Currently, the effects of the workpiece geometry on the thermal fields, material flow and interface contaminant removal during processing are not fully understood. To address this problem, two-dimensional (2D) computational models were developed using the finite element analysis (FEA) software DEFORM and validated with experiments. A key finding was that the width of the workpieces in the direction of oscillation (in-plane width) had a much greater effect on the experimental weld outputs than the cross-sectional area. According to the validated models, a decrease of the in-plane width increased the burn-off rate whilst decreasing the interface temperature, TMAZ thickness and the burn-off required to remove the interface contaminants from the weld into the flash. Furthermore, the experimental weld interface consisted of a Widmanstätten microstructure, which became finer as the in-plane width was reduced. These findings have significant, practical benefits and may aid industrialisation of the LFW process.The authors would like to thank the Engineering and Physical Sciences Research Council (EPSRC), The Boeing Company and The Welding Institute (TWI) for funding the research presented in this paper