Optimizing Urgency of Information through Resource Constrained Joint Sensing and Transmission.

Applications requiring services from modern wireless networks, such as those involving remote control and supervision, call for maintaining the timeliness of information flows. Current research and development efforts for 5G, Internet of things, and artificial intelligence technologies will benefit from new notions of timeliness in designing novel sensing, computing, and transmission strategies. The age of information (AoI) metric and a recent related urgency of information (UoI) metric enable promising frameworks in this direction. In this paper, we consider UoI optimization in an interactive point-to-point system when the updating terminal is resource constrained to send updates and receive/sense the feedback of the status information at the receiver. We first propose a new system model that involves Gaussian distributed time increments at the receiving end to design interactive transmission and feedback sensing functions and develop a new notion of UoI suitable for this system. We then formulate the UoI optimization with a new objective function involving a weighted combination of urgency levels at the transmitting and receiving ends. By using a Lyapunov optimization framework, we obtain a decision strategy under energy resource constraints at both transmission and receiving/sensing and show that it can get arbitrarily close to the optimal solution. We numerically study performance comparisons and observe significant improvements with respect to benchmarks.

A daily examination of perceived stress and coping strategies used among college students during COVID-19.

This study examined inter- and intra-person level associations between stress and overwhelm and adaptive coping strategies used by college students during COVID-19. Participants were 55 college students (Mage = 23.31, SD = 4.49; 87% White, 85% Female), who completed a 21-day daily diary study. The common coping strategies endorsed were media use, relaxation techniques, and exercise. Variability among feelings of stress (ICC = .520) and overwhelm (ICC = .530) were similarly explained by between and within-person differences. Daily stress and overwhelm were positively associated with relaxation techniques, media, and total coping strategies. Further, daily stress was positively associated with connection with others to cope. At the between-person level, average stress was associated with avoidance strategies such as taking a break from news to cope. These findings may prove useful in the development of interventions to increase the practice of adaptive coping strategies to reduce stress and overwhelm.