A network epidemic model for online community commissioning data

A statistical model assuming a preferential attachment network, which is generated by adding nodes sequentially according to a few simple rules, usually describes real-life networks better than a model assuming, for example, a Bernoulli random graph, in which any two nodes have the same probability of being connected, does. Therefore, to study the propagation of “infection” across a social network, we propose a network epidemic model by combining a stochastic epidemic model and a preferential attachment model. A simulation study based on the subsequent Markov Chain Monte Carlo algorithm reveals an identifiability issue with the model parameters. Finally, the network epidemic model is applied to a set of online commissioning data.     

The impact of distance on knowledge transfer effectiveness in multinational corporations

This paper aims to shed light on the interplay of knowledge transfer mechanisms and distance within the MNC. While it is largely undisputed that cross-boarder knowledge flows contribute to the firm's success, our knowledge on the effects of specific transfer mechanisms is scarce. We examine the impact of different dimensions of distance to test the applicability of personal coordination mechanisms (PCM) and technology-based coordination mechanisms (TCM) in situations of differentiation and dispersion. Data on 324 knowledge transfer relationships of MNC units was used to test our hypotheses. While TCM function relatively context-free, we find that PCM are moderated by distance. Our results support moderating effects of geographic, cultural and linguistic distance, which are vital to our understanding of knowledge transfer effectiveness in MNCs.     

Aeromobilities’ extra-sectoral costs: a methodological reorientation

ABSTRACT

For over a decade, scholars have graced a number of aeromobilities’ socio-cultural dimensions, from being in an airport to commanding an aeroplane. Yet, while this work has heightened appreciations of the political nature of aerial worlds, the propensity has been to focus on the immediate arrangements and politics related to flight. Using civil aviation as an example, this article offers a methodological reorientation and conceptual rethink of how aeromobilities’ (re)production invokes far-reaching political economies in excess of the core activity of aerial conveyances. It seeks to open up worldly webs of iniquitous movements and relations that make aerial life – rather than flying per se – possible in the first place. Interspersing a selection of our research with extant literature, reports and statistics, the article outlines, in coincidence with our earlier findings, two ways in which civil aviation has thus incurred extensive extra-sectoral costs: the material mobilisation of resources for air infrastructures, and the mobilisation of populations and labour for aeromobile development. The discussion aims ultimately to promote a more nuanced understanding of the constituents, and costs, of moving in the present age.     

Living in a Retirement Village: Choice,Contracts, and Constraints

Retirement village living is a growing housing option for older people. Research to date has focused primarily on the social milieu of the village with limited attention to the legal and financial obligations associated with this form of specialized seniors' housing. Using data from a survey of 312 Australian residents, this article suggests while residents place financial and legal obligations at the forefront when considering relocation and during residency, there is variability in professional advice and constraints on choices when needs and capacities change. The distinctive obligations associated with retirement village living require greater attention to ensure an informed lifestyle decision.     

The Longitudinal Interplay between Bullying,Victimization, and Social Status: Age‐related and Gender Differences

The current study examined the longitudinal interplay between bullying, victimization, and social status (acceptance, rejection, and perceived popularity) over the course of 1 year. Cross‐lagged path models were estimated for two cohorts, covering grades 3–6 (N = 3904, M age = 11.2 years) and grades 7–9 (N = 4492, M age = 14.4 years). Comparisons between cohorts and by gender were conducted. The results of this study corroborate the complexity of the longitudinal interplay between bullying, victimization, and social status in showing that direction and strength of associations differ by type of peer status, age, and gender. Conclusions cannot be drawn without taking these differences into account. The findings are discussed according to these differences, and directions for future research are provided.     

Sex-Related Alcohol Expectancies Among African American Women Attending an Urban STI Clinic

African American women are disproportionately affected by human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) and sexually transmitted infections (STIs). Alcohol use is a significant risk factor for HIV/STI acquisition. Sex-related alcohol expectancies (SRAEs) may partially account for alcohol-related risky sexual behaviors. Using qualitative interviews we explored the link between alcohol use and risky sex among 20 African American women attending an STI clinic who had consumed four or more alcoholic drinks per drinking day (binge drinking) and/or reported vaginal or anal sex while under the influence of alcohol. Four SRAEs emerged, which we named drink for sexual desire, drink for sexual power, drink for sexual excuse, and drink for anal sex. While the desire SRAE has been documented, this study identified three additional SRAEs not currently assessed by expectancy questionnaires. These SRAEs may contribute to high-risk sex when under the influence of alcohol and suggests the importance of developing integrated alcohol–sexual risk reduction interventions for high-risk women.     

Transforming the social order: The role of the university in social change

The contemporary multicultural and secular university in the United States is experiencing an array of value transitions as well as ideological contradictions. The present dilemmas and challenges confronting the academy appear to emanate from the preoccupation with new schools of explanation and interpretation and from arbitrarily defined appropriate speech. In the social sciences and in the humanities, value neutrality and traditional constructs are viewed as strategies for concealing and promoting anachronistic standards of conduct. Faculty interviewed express concern and skepticism about the direction and future of the American university in a postindustrial and a postmodernistic era. Many perceive the university as not assuming a leading role in constructive social change. This results from its absorption with political symbols and selectively perceived meanings of varied cultural interests. Some faculty sense a major transformation in the way the university and its culture are produced and arranged. The social sciences and humanities have the potential for coping with the current paradoxes.This paper is a revision of the presidential address delivered in Boston at the 1993 annual meeting of the Eastern Sociological Society.     

Combining Dyslexia and Mothering: Perceived Impacts on Work

Previous studies have provided an insight into the lives of disabled mothers, but little attention has been paid to disabled working mothers. This paper draws on interviews with women who had a formal diagnosis of dyslexia, to discuss: particular difficulties when combining work and mothering; the perceived positive impacts on work and education, of becoming a mother; unsupportive managers; what some mothers found helpful in order to maintain work; and the diversity between experiences. We conclude that for those already on a career path before having children, some of their experiences could have been seen as an amplification of what other working mothers face. However, a difference was that the added time taken up with mothering meant they became more vulnerable to ‘exposing’ their impairment at work. In contrast, for dyslexic women who were yet to attain a high status in education and work, motherhood encouraged them to initiate their career.