Dislocation formation in the partially coherent interfaces of an embedded layer in a semi-infinite matrix

The formation of two misfit edge dislocations is theoretically investigated in the interfaces of a layer embedded in a semi-infinite matrix. Assuming the matrix–layer interfaces are partially coherent, the energy variation resulting from the formation of the dislocations from the lateral free surface of the structure has been determined in the shearing stress field due to the partial misfit. The mechanical stability of the structure is analysed with respect to the dislocation formation as a function of the size of the coherent region of the interface and the misfit strain.     

The edge of chaos: A nonlinear view of psychoanalytic technique

The field of nonlinear dynamics (or chaos theory) provides ways to expand concepts of psychoanalytic process that have implications for the technique of psychoanalysis. This paper describes how concepts of “the edge of chaos,” emergence, attractors, and coupled oscillators can help shape analytic technique resulting in an approach to doing analysis which is at the same time freer and more firmly based in an enlarged understanding of the ways in which psychoanalysis works than some current recommendation about technique. Illustrations from a lengthy analysis of an analysand with obsessive‐compulsive disorder show this approach in action.     

Contextualizing the Psychosocial Well‐being of Military Members and Their Partners: The Importance of Community and Relationship Provisions

Evidence of the impact of communities has been documented for a variety of individual and relational outcomes, including mental and physical health as well as the quality of romantic and parent–child relationships. The military represents a rather unique work context; in that, it is generally considered a lifestyle with a distinct culture and community. Yet, military families are also members of their broader, comprehensive community. Drawing from the social organizational theory of action and change (SOC) (Mancini & Bowen, 2013), and relationship provisions theory (Weiss, 1969) and utilizing a sample of 266 active duty military families, this study examined connectedness with the military community and the broader, comprehensive community. A dyadic model was evaluated whereby each partner's perspective of their comprehensive and military community was hypothesized to influence their own psychosocial well‐being as well as their partner's psychosocial well‐being. The role of relationship provisions (that is, having relationship needs met) as a mechanism linking community connections to psychosocial well‐being was also examined. Overall, the findings supported the hypothesized model, particularly for intra‐individual effects and military members. Findings emphasize the importance of considering what is gained from connections within a community rather than a focus solely on the connections themselves.     

How does a word become a message? An illustration on a developmental time-scale

Recent changes in views on cognition underscore its embodied, situated and distributed character. These changes are compatible with the conceptual framework of ecological psychology. However for ecological psychology to propose explanations for a broad range of cognitive phenomena, including language, it needs an account of how to link the dynamics of coupling between the organism and the environment with the apparent symbolicity of informational structures. In this paper it is proposed that a theory of information in biological systems, advocated by Howard Pattee, may help forge this link. By treating informational structures as constraints on dynamics this approach helps to identify which processes, in which systems and on what time-scales are needed for structures to ‘become messages’. I will illustrate how these processes might work on developmental time-scale in the domain of language, building on the work by Edward Reed (1995, 1996) and extending it using the view of linguistic structures as constraints.     

Can novice drivers be motivated to use a smartphone based app that monitors their behavior?

Encouraging young drivers to use driving feedback systems (referred here as GreenBoxes) is a challenge. Prior research and experience indicated that mainly due to insufficient motivation, adoption of GreenBoxes is minimal. Research also demonstrated that once feedback from GreenBoxes is provided to young drivers and their parents, the frequency of risky driving behavior is reduced.This study investigated the possible benefits of providing group incentives to encourage usage of GreenBoxes among young drivers. The specific GreenBox used in this study was a smartphone app that needed to be initiated at the beginning of each trip. Once initiated it monitors driving behavior in terms of G-force events, provides score and feedback, and shares the driving information with a pre-defined sponsor.This study builds and expands on a previous study by making the duration of the experiment longer, and by allowing participants to recruit their friends in order to help the group win its rewards.Despite of the more challenging scheme needed to gain rewards, the results obtained repeat the success of the previous study: all eligible participants downloaded the app and used it to win the rewards for the group. Additionally, friends were recruited by participants and used the app to help the group win rewards (without getting any personal rewards for themselves). However, once all the pre-specified rewards were achieved within the allotted time period, the young drivers stopped using the app.This study confirms again that barriers to adoption of GreenBox app among young drivers can be overcome by choosing low-cost suitable group incentive schemes.     

The electric vehicle: A new driving experience involving specific skills and rules

The arrival of the electric vehicle (EV) on the market is one consequence of government measures to improve air quality and reduce CO² emissions. However, the EV has specific properties of use associated with its limited range and relative silence compared to normal vehicles, influencing the mobility behaviours of drivers and requiring them to develop some new driving abilities. This paper examines the behavioural modifications brought about by daily use of an electric vehicle at three different levels of driving activity: strategic, tactical and operational. The study collected and analyzed the self-reported behaviours (via questionnaires and travels dairies) of 36 Parisian private drivers, each of whom drove for six months an electric MINI E prototype. The results of the study show that driving an EV requires a learning phase to acquire the skills and knowledge necessary to operate the vehicle. At the strategic level of driving, drivers take into account the restricted range of the EV, implement a daily charge process, and develop new behaviours related to trip planning. The study also examines driver behaviour at the tactical level, in terms of driver interactions with other road users to deal with the silent nature of the EV, and at the operational level of driving, in terms of braking behaviour to master the regenerative braking function of the EV. The paper discusses the interactions between these three levels of driving activity.     

How do supporters perceive positive and negative psychological momentum changes during a simulated cycling competition?

ObjectiveThe present study examined changes in sport supporters' psychological momentum (PM) during a simulated cycling competition through the lens of the dynamical systems approach.DesignParticipants were asked to support one of two competing cyclists involved in a race that was displayed on a screen in a lecture hall.MethodThe race scenario was manipulated so that the image of the supported cyclist underwent either positive or negative momentum. At regular intervals, participants indicated their PM perceptions during the race.ResultsPM perceptions rapidly changed at the onset of both the positive and negative momentum sequences and then remained stable, reflecting negative hysteresis. Supporters tended to anticipate the future performance of a given athlete on the basis of their current performance. Moreover, this anticipatory tendency was stronger during the positive momentum sequence than during the negative momentum sequence.ConclusionThese results provide initial insights into how PM perceptions of sport supporters change during a competition.     

Linking the Levels: Network and Relational Perspectives for Community Psychology

In this article, we assert that relationships and networks are of paramount importance for understanding and improving settings, neighborhoods, communities, and larger social systems. Despite previous acknowledgements of their relevance, relational and social network perspectives and analyses remain underrepresented in community psychological research and action. Here, we claim that network and relational perspectives can provide conceptual and empirical ‘links’ between levels of analysis, more fully reflecting a transactional view. We also describe some of the sophisticated methodologies that can be employed in empirical studies drawing on these perspectives. Additionally, we contend that core concepts in community psychology such as health promotion, empowerment, coalition building, and dissemination and implementation can be better understood when employing relational and network perspectives. As an introduction to this special issue of American Journal of Community Psychology, we draw out themes and key points from the articles in the issue, and offer recommendations for future advancement of these perspectives in the field.     

Complex Adaptive Systems and Global Capitalism: The Risk of a New Ideology of Global Complexity

Since the foundation of the Santa Fe Institute, the new science of complex adaptive systems (CAS) has seen extraordinary development, breaking with previous, more epistemological, trends in complexity theory. This article makes a critique of CAS as a model of the current global complexity. Its basic model, the cellular automaton, which focuses on the interactive dynamics among components, ignores the nature of any complex system as constructed by the observer/actor and is unable to explain the sociohistorical construction of the agents/subjects (analyzed by Foucault) and the social structure in which they are located (analyzed by Bourdieu), thus being unable to accurately represent the overall social complexity.