Sufficient Conditions for Fast Switching Synchronization in Time Varying Network Topologies

In previous work, empirical evidence indicated that a time-varying network could propagate sufficient information to allow synchronization of the sometimes coupled oscillators, despite an instantaneously disconnected topology. We prove here that if the network of oscillators synchronizes for the static time-average of the topology, then the network will synchronize with the time-varying topology if the time-average is achieved sufficiently fast. Fast switching, fast on the time-scale of the coupled oscillators, overcomes the descychnronizing decoherence suggested by disconnected instantaneous networks. This result agrees in spirit with that of where empirical evidence suggested that a moving averaged graph Laplacian could be used in the master-stability function analysis. A new fast switching stability criterion here-in gives sufficiency of a fast-switching network leading to synchronization. Although this sufficient condition appears to be very conservative, it provides new insights about the requirements for synchronization when the network topology is time-varying. In particular, it can be shown that networks of oscillators can synchronize even if at every point in time the frozen-time network topology is insufficiently connected to achieve synchronization.Comment: Submitted to SIAD

Why organizational and community diversity matter:Representativeness and the Emergence of Incivility and Organizational Performance

Integrating sociological and psychological perspectives, this research considers the value of organizational ethnic diversity as a function of community diversity. Employee and patient surveys, census data, and performance indexes relevant to 142 hospitals in the United Kingdom suggest that intraorganizational ethnic diversity is associated with reduced civility toward patients. However, the degree to which organizational demography was representative of community demography was positively related to civility experienced by patients and ultimately enhanced organizational performance. These findings underscore the understudied effects of community context and imply that intergroup biases manifested in incivility toward out-group members hinder organizational performance

A Comparative Study of the Turnover of Multiciliated Cells in the Mouse Trachea, Oviduct and Brain

AbstractIn mammals, multiciliated cells (MCCs) line the lumen of the trachea, oviduct, and brain ventricles, where they drive fluid flow across the epithelium. Each MCC population experiences vastly different local environments that may dictate differences in their lifetime and turnover rates. However, with the exception of MCCs in the trachea, the turnover rates of these multiciliated epithelial populations at extended time scales are not well described. Here, using genetic lineage-labeling techniques we provide a direct comparison of turnover rates of MCCs in these three different tissues. We find that oviduct turnover is similar to that in the airway (∼6 months), while multiciliated ependymal cells turnover more slowly.</jats:p

Attitudes toward relationship treatment among underserved couples

Attitudinal and instrumental barriers exist for couples broadly that prevent couples from accessing professional relationship help. These barriers may be even more pronounced among couples from low-income, and other underserved, backgrounds. The current study examined how couples\u27 (N = 651 couples) presenting attitudes toward seeking couple treatment, and change in these attitudes, differed as a function of demographic variables within a brief relationship education program, Relationship Checkup (Gordon et al., 2020). Results revealed that individuals who identified as male, a person of color, had lower income, or were cohabiting evidenced poorer baseline attitudes relative to their demographic counterparts. Further, people of color and people who were cohabiting evidenced greater change in attitudes across the intervention relative to their demographic counterparts. Thus, clinicians may benefit from considering that underserved couples appear to face attitudinal barriers in addition to known instrumental barriers (e.g., financial, transportation, childcare, time, etc.). Clinical and research implications are discussed