Online epistemic communities: theoretical and methodological directions for understanding knowledge co-elaboration in new digital spaces

This paper presents, illustrates and discusses a generic framework for studying knowledge co-elaboration in online epistemic communities ("OECs"). Our approach is characterised by: considering knowledge co-elaboration as a design activity; distinguishing discussion and production spaces in OECs; characterising participation via the notion of role; fine-grained analyses of meaning, content and communicative functions in interactions. On this basis, three key issues for ergonomics research on OECs are discussed and illustrated by results from our previous studies on OSS and Wikipedia. One issue concerns the interrelation between design (task) and regulation. Whereas design task-oriented activity is distributed among participants, we illustrate that OCEs function with specialised emerging roles of group regulation. However, the task-oriented activity also functions at an interpersonal level, as an interplay of knowledge-based discussion with negotiation of competencies. Another issue concerns the foci of activity on the (designed) knowledge object. Based on a generic task model, we illustrate asymmetry and distinctiveness in tasks' foci of participants. The last issue concerns how design-use mediation is ensured by specific forms of mediation roles in OECs. Finally we discuss the degree of generality of our framework and draw some perspectives for extending our framework to other OECs.     

Are there domino effects between consumers' ordinary and ‘green’ practices? An analysis of quantitative data from a sensitisation campaign on personal carbon footprint

This paper studies how consumers' reported practices related to food, energy use in housing, daily mobility, and tourism are combined and structured. Social practice theories are the main theoretical framework of this research. Data are drawn from a sensitisation campaign run by the WWF-Belgium and the methods developed to attempt to translate the theoretical focus to practices. Results show that both the low number of ‘green’ practices reported and the multiplicity of combinations of practices indicate a rather important compartmentalisation of ‘green’ practices and seem to refute the hypothesis of vast domino effects in these four different areas. In addition, a wider openness to information on environmentally friendlier practices is associated with a larger number of such practices, which raises questions about the design of such campaigns. Finally, there is no conventionalised way of linking practices and commitments taken by the respondents to reduce their environmental impact. A few policy recommendations are derived for sensitisation campaigns that often assume domino effects between ‘green’ practices, and for tools dealing with personal carbon awareness.     

Role Conflict and Self‐Efficacy Among Employed Parents: Examining Complex Statistical Interactions

In response to growing concerns with explaining how work and family interfere with each other and with statistical approaches that do not capture the way in which predictors interact, this study tested statistical interactions involving personal and social resources of 410 full‐time employed women and men. The results indicate that self‐efficacy is a strong predictor of family interfering with work (FIW) and work interfering with family (WIF). Gender moderates the relation between supervisor support and WIF moderates the impact of efficacy beliefs and instrumental support at home on FIW. Specifically, while supervisor support is negatively related to WIF in women and men, high levels of support more strongly affected men's perceptions of WIF. In low self‐efficacy men, high levels of support at home improved their perceptions of FIW but these perceptions worsened in women. These findings contrast with earlier research that focus predominantly on the predictive value of structural demands (for example, the number of hours worked per week and family size). This study shows that gender plays a critical yet intricate role as a predictor of the successful management of work and family roles: it is not gender per se but its interaction with personal and social variables that informs us about differences in the experience of employed parents.     

Online ghettoes,perils or supernannies? Australian young people with chronic illness and disability challenge some moral panics about young people online

Current literature focusing on young people’s digital technology use often reflects concerns that they may live virtual lives and withdraw from locally geographically situated spaces. It assumes the existence of a split between offline and online ‘worlds’ corresponding to ‘real ‘and ‘non-real’ respectively. This article reports research findings on how young people locate new social media technologies in their daily lives with particular focus on the relationship between their online and offline experiences. The voices of the young people guided the research, which found that their social media use contradicts conventional narratives of moral panic about the alleged unreality and fearful dangers of online spaces for young people.     

ULM,a software for conservation and evolutionary biologists

Matrix models for population dynamics have recently been studied intensively and have many applications to theoretical and applied problems (conservation, management). The computer program ULM (Unified Life Models) collects a good part of the actual knowledge on the subject. It is a powerful tool to study the life cycle of species and meta-populations. In the general framework of discrete dynamical systems and symbolic computation, simple commands and convenient graphics are provided to assist the biologist. The main features of the program are shown through detailed examples: a simple model of a starling population life cycle is first presented leading to basic concepts (growth rates, stable age distribution, sensitivities); the same model is used to study competing strategies in a varying environment (extinction probabilities, stochastic sensitivities); a meta-population model with migrations is then presented; some results on migration strategies and evolutionary stable strategies are eventually proposed.     

A protective service system

This article presents the results of a small scale study of the protective service caseload of a mid-western metropolitan area. The basic characteristics of the caseload match the national picture presented by the American Humane Association's National Study on Child Abuse and Neglect. The present study focused on the degree to which “systematic” vs. “random” forces appear to be at work in the progress of cases through the system. The overall picture is of some systematic efforts to conduct the process of referrals to community agencies but of a great deal of “randomness” in the bureaucratic closing of cases. This is a major area of concern.     

Trajectories of Breadth of Participation in Organized Activity During Childhood

This study aimed to identify the trajectories of breadth of participation in organized activities during childhood and to examine the predictors of membership in these trajectories (child's individual and family characteristics measured in Kindergarten). A sample of 1038 children, recruited in Kindergarten, was assessed yearly between Kindergarten and grade 4. Semiparametric group‐based modeling brought out four trajectories: the no participation group (13.5 percent), the increasing group (26.4 percent), the decreasing group (14.1 percent), and the high group (46.1 percent). Prosociality predicted membership in the no participation group, as compared with the increasing group. Social withdrawal predicted membership in the no participation group, as compared with the high group. High family income and higher maternal education predicted membership in the increasing, decreasing, and high trajectory groups, as compared with the no participation group. Higher paternal education predicted membership in the high group, as compared with the increasing group. Overall, family variables had a greater impact than individual variables on the probability that the child would participate in a broader range of organized activities.     

The Impact of the Within My Reach Relationship Training on Relationship Skills and Outcomes for Low‐Income Individuals

A federal grant was awarded to provide the Within My Reach healthy relationships curriculum to low‐income, at‐risk individuals involved with various social service agencies. The effectiveness of this curriculum was evaluated for 202 participants through measures of training and relationship outcomes pre‐, immediately post‐ and 6 months posttraining. Participants experienced high levels of training satisfaction; significant increases in knowledge, communication/conflict resolution skills, and relationship quality; as well as a trend in the reduction of relationship violence. An important implication of this research is that MFTs may broaden their service delivery to at‐risk individuals by collaborating with community agencies to adapt established relationship enhancement programs, evidence‐based tools, and principles that complement traditional couples therapy.