Collective self-optimization of communicating active particles

The quest for how to collectively self-organize in order to maximize the survival chances of the members of a social group requires finding an optimal compromise between maximizing the well-being of an individual and that of the group. Here we develop a minimal model describing active individuals which consume or produce, and respond to a shared resource—such as the oxygen concentration for aerotactic bacteria or the temperature field for penguins—while urging for an optimal resource value. Notably, this model can be approximated by an attraction–repulsion model, but, in general, it features many-body interactions. While the former prevents some individuals from closely approaching the optimal value of the shared “resource field,” the collective many-body interactions induce aperiodic patterns, allowing the group to collectively self-optimize. Arguably, the proposed optimal field–based collective interactions represent a generic concept at the interface of active matter physics, collective behavior, and microbiological chemotaxis. This concept might serve as a useful ingredient to optimize ensembles of synthetic active agents or to help unveil aspects of the communication rules which certain social groups use to maximize their survival chances.

Bonding and bridging social capital towards collective action in participatory irrigation management. Evidence in Chiang Rai Province, Northern Thailand

PurposeThe purpose of this paper is to examine the effect of social capital with bonding and bridging distinction in promoting higher participation in collective action in participatory irrigation management.Design/methodology/approachA sample of 304 farmers was surveyed using a structured questionnaire. A focus group discussion was also carried out with randomly selected water users, leaders and irrigation officers. A confirmatory factor analysis and structural equation modelling were used to test the hypothesised relationship of bonding and bridging social capital towards collective action.FindingsThe findings show that social capital has a significant direct effect on collective action and an indirect effect on joint irrigation management's perceived performance through collective action (mediator). It implies the need to complement the participatory irrigation management programme with an understanding of the social aspects for a higher farmer's participation over the shared resource.Originality/valueThe paper emphasises social capital's role in facilitating a real participatory engagement in shared resource management. Also, it is the first scholarly work linking social capital with bonding and bridging distinction towards collective action in a joint resource management context.

I blame you, I hear you: Couples’ pronoun use in conflict and dyadic coping

In dyadic interaction, a verbal focus on one individual (“you-talk,” “I-talk”), rather than on the couple (“we-talk”) has predominantly been linked to dysfunctional relationship processes. However, context differences in these links have not yet been systematically examined. Is it functional to asymmetrically focus on one partner during support interactions but problematic during conflict? Does a high level of couple-focus represent a resource across contexts? In this preregistered study, we investigated dyad-level pronoun use (we-/I-/you-talk) and their link to situational relationship functioning (SRF) across three interaction tasks (one conflict, two dyadic coping tasks) within couples ( N = 365). More specifically, we examined associations of couple-means, i.e. pronoun use as a shared resource/vulnerability between partners, and couple-differences, i.e. functional/dysfunctional asymmetric pronoun use with observed interaction positivity and relationship climate. Results revealed both context differences and similarities. Asymmetric partner-focus (i.e. you-talk) was dysfunctional in conflict, whereas asymmetric partner- and self-focus (i.e., you-talk/I-talk; focus on the stressed partner) were functional in dyadic coping. Beyond asymmetry, you-talk (couple-mean) showed consistent negative associations with SRF in all tasks studied. We-talk (couple-mean) was positively linked to SRF, but only in conflict interactions. In conflict, couple-focus thus represented a shared resource that can buffer from dysfunctional conflict interaction characterized by partner-focus. In line with conceptual frameworks, the dyadic coping results emphasize the importance of focusing on the partner in need. The study corroborates the prospect of pronoun use as a context-specific indicator of relationship functioning. Gender differences, implications for future research and possible interventions are discussed.

Drug shortage management: A qualitative assessment of a collaborative approach

Drug shortages frequently and persistently affect healthcare institutions, posing formidable financial, logistical, and ethical challenges. Despite plentiful evidence characterizing the impact of drug shortages, there is a remarkable dearth of data describing current shortage management practices. Hospitals within the same state or region may not only take different approaches to shortages but may be unaware of shortages proximate facilities are facing. Our goal is to explore how hospitals in Michigan handle drug shortages to assess potential need for comprehensive drug shortage management resources. We conducted semi-structured interviews with diverse stakeholders throughout the state to describe experiences managing drug shortages, approaches to recent shortages, openness to inter-institutional engagement, ideas for a shared resource, and potential obstacles to implementation. To solicit additional feedback on ideas for a shared resource gathered from the interviews, we held focus groups with pharmacists, physicians, ethicists, and community representatives. Among participants representing a heterogeneous sample of institutions, three themes were consistent: (1) numerous drug shortage strategies occurring simultaneously; (2) inadequate resources and lead time to proactively manage shortages; and (3) interest in, but varied attitudes toward, a collaborative approach. These data provide insight to help develop and test a shared drug shortage management resource for enhancing fair allocation of scarce drugs. A shared resource may help institutions adopt accepted best practices and more efficiently access or share finite resources in times of shortage.