Social control in online communities of consumption: a framework for community management

Online communities of consumption (OCCs) represent highly diverse groups of consumers whose interests are not always aligned. Social control in OCCs aims to effectively manage problems arising from this heterogeneity. Extant literature on social control in OCCs is fragmented as some studies focus on the principles of social control, while others focus on the implementation. Moreover, the domain is undertheorized. This article integrates the disparate literature on social control in OCCs providing a first unified conceptualization of the topic. The authors conceptualize social control as a system, or configuration, of moderation practices. Moderation practices are executed during interactions operating under different governance structures (market, hierarchy, and clan) and serving different purposes (interaction initiation, maintenance, and termination). From this conceptualization, important areas of future research emerge and research questions are developed. The framework also serves as a community management tool for OCC managers, enabling the diagnosis of social control problems and the elaboration of strategies and tactics to address them

Can brewer-sponsored ‘drink responsibly’ warning message be effective without alcohol policies in Nigeria?

Alcohol availability, use and misuse and their related problems are rising in many parts of the African continent and this has been attributed to many factors such as non-existent or ineffective regulatory measures. In contemporary Nigeria, while a culture of intoxication is growing, there are no regulatory measures in the form of alcohol policies to reduce it. What exists is brewer-sponsored self-regulation. This paper therefore, critically analyses this self-imposed 'drink responsibly' warning message, arguing that because responsible drinking messages are strategically designed to serve the interest of alcohol industries, it cannot be effective. The paper further argues that because there are no definitions of standard drinks and where alcohol by volume (ABV) is scarcely inscribed on product labels of alcoholic beverages, such message will remain ineffective. Therefore, it recommends that an urgent step should be taken by the government to formulate and implement comprehensive evidence-based alcohol policies in Nigeria

Weak Localization Effect in Superconductors by Radiation Damage

Large reductions of the superconducting transition temperature $T_{c}$ and the accompanying loss of the thermal electrical resistivity (electron-phonon interaction) due to radiation damage have been observed for several A15 compounds, Chevrel phase and Ternary superconductors, and $\rm{NbSe_{2}}$ in the high fluence regime. We examine these behaviors based on the recent theory of weak localization effect in superconductors. We find a good fitting to the experimental data. In particular, weak localization correction to the phonon-mediated interaction is derived from the density correlation function. It is shown that weak localization has a strong influence on both the phonon-mediated interaction and the electron-phonon interaction, which leads to the universal correlation of $T_{c}$ and resistance ratio.Comment: 16 pages plus 3 figures, revtex, 76 references, For more information, Plesse see http://www.fen.bilkent.edu.tr/~yjki

Spatial updating in narratives.

Across two experiments we investigated spatial updating in environments encoded through narratives. In Experiment 1, in which participants were given visualization instructions to imagine the protagonist’s movement, they formed an initial representation during learning but did not update it during subsequent described movement. In Experiment 2, in which participants were instructed to physically move in space towards the directions of the described objects prior to testing, there was evidence for spatial updating. Overall, findings indicate that physical movement can cause participants to link a spatial representation of a remote environment to a sensorimotor framework and update the locations of remote objects while they move

Estimation of cooling rates during close-coupled gas atomization using secondary dendrite arm spacing measurement

Al-4 wt pct Cu alloy has been gas atomized using a commercial close-coupled gas-atomization system. The resulting metal powders have been sieved into six size fractions, and the SDAS has been determined using electron microscopy. Cooling rates for the powders have been estimated using a range of published conversion factors for Al-Cu alloy, with reasonable agreement being found between sources. We find that cooling rates are very low relative to those often quoted for gas-atomized powders, of the order of 10 K s for sub-38 μm powders. We believe that a number of numerical studies of gas atomization have overestimated the cooling rate during solidification, probably as a consequence of overestimating the differential velocity between the gas and the particles. From the cooling rates measured in the current study, we estimate that such velocities are unlikely to exceed 20 m s

Youth transitions as ‘wiki-transitions’ in youth policies platforms

The version of a journal article that has been accepted for publication in a journal. This is an Accepted Manuscript of an article published by Taylor & Francis in European Societies on 22/11/2019 available online: http://www.tandfonline.com/10.1080/14616696.2019.1690158.In recent years, a number of youth-focused online platforms have emerged which, in different ways, seek to support young people across Europe in building pathways to independent adulthood. In this article, we draw on data from Edgeryders, a recent youth policy research project, to reflect on the extent to which online discussion platforms are useful instruments for understanding the challenges youth face in their transitions to independent adulthood across Europe. Noting the collaborative emphasis articulated by both the project designers and participants, we ask how we might make sense of the data – and the meanings conveyed by that data – produced by online projects. We propose the notion of ‘wiki-transitions’ as a means of theorising young people’s use of online space to support their transitions to adulthood

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results