Consumer views on the potential use of mobile phones for the delivery of weight-loss interventions

BACKGROUND: The surge in the incidence of obesity and being overweight demands new options to extend the reach of weight-loss interventions. Mobile phones provide a medium for reaching large numbers of people in a cost-effective manner. The present study aimed to explore the potential for weight-loss interventions to be delivered via mobile phone. METHODS: A mixed methods approach was employed. A telephone survey was conducted with 306 randomly selected participants, and 10 focus groups were undertaken with 54 purposively selected participants. The telephone survey comprised questions exploring the nature and acceptability of any potential weight-loss programme that might be delivered via mobile phones. The focus groups were conducted to explore issues of acceptability in more depth than was possible in the survey. RESULTS: Two-thirds of participants reported support for a mobile phone weight-loss intervention, with greater levels of support amongst younger age groups and rural Māori (the indigenous population in New Zealand). Participants liked the idea of ready access to weight-loss information, and associated feedback and encouragement. The results suggest that interventions would need to include aspects of social support, use tailored and personalised content, and be practical and relevant so that they appeal to consumers. Appropriate methods of providing social support using a mobile phone require further exploration. CONCLUSIONS: Mobile phones may provide a novel but acceptable way to deliver a weight-loss intervention. They have the potential to be automatically personalised and tailored to the needs of the individual, at the same time as being delivered at a population level.

A multimedia mobile phone-based youth smoking cessation intervention: findings from content development and piloting studies

BACKGROUND: While most young people who smoke want to quit, few access cessation support services. Mobile phone-based cessation programs are ideal for young people: mobile phones are the most common means of peer communication, and messages can be delivered in an anonymous manner, anywhere, anytime. Following the success of our text messaging smoking cessation program, we developed an innovative multimedia mobile phone smoking cessation intervention.

OBJECTIVE: The aim of the study was to develop and pilot test a youth-oriented multimedia smoking cessation intervention delivered solely by mobile phone.

METHODS: Development included creating content and building the technology platform. Content development was overseen by an expert group who advised on youth development principles, observational learning (from social cognitive theory), effective smoking cessation interventions, and social marketing. Young people participated in three content development phases (consultation via focus groups and an online survey, content pre-testing, and selection of role models). Video and text messages were then developed, incorporating the findings from this research. Information technology systems were established to support the delivery of the multimedia messages by mobile phone. A pilot study using an abbreviated 4-week program of video and text content tested the reliability of the systems and the acceptability of the intervention.

RESULTS: Approximately 180 young people participated in the consultation phase. There was a high priority placed on music for relaxation (75%) and an interest in interacting with others in the program (40% would read messages, 36% would read a blog). Findings from the pre-testing phase (n = 41) included the importance of selecting "real" and "honest" role models with believable stories, and an interest in animations (37%). Of the 15 participants who took part in the pilot study, 13 (87%) were available for follow-up interviews at 4 weeks: 12 participants liked the program or liked it most of the time and found the role model to be believable; 7 liked the role model video messages (5 were unsure); 8 used the extra assistance for cravings; and 9 were happy with two messages per day. Nine participants (60%) stopped smoking during the program. Some technical challenges were encountered during the pilot study.

CONCLUSIONS: A multimedia mobile phone smoking cessation program is technically feasible, and the content developed is appropriate for this medium and is acceptable to our target population. These results have informed the design of a 6-month intervention currently being evaluated for its effectiveness in increasing smoking cessation rates in young people.

A novel APP recommendation method based on SVD and social influence

In order to satisfy requirements of real-time processing and large capacity put forwarded by big data, hybrid storage has become a trend. There’s asymmetric read/write performance for storage devices, and asymmetric read/write access characteristics for data. Data may obtain different access performance on the same device due to access characteristics waving, and the most suitable device of data may also change at different time points. As data prefer to reside on device on which they can obtain higher access performance, this paper distributes data on device with highest preference degree to improve performance and efficiency of whole storage system. A Preference-Aware HDFS (PAHDFS) with high efficiency and scalability is implemented. PAHDFS shows good performance in experiments.

"I can sit on the beach and punt through my mobile phone" : the influence of physical and online environments on the gambling risk behaviours of young men.

Gambling is rapidly emerging as an important public health issue, with gambling products causing considerable health and social harms to individuals, families and communities. Whilst researchers have raised concerns about online wagering environments, few studies have sought to explore how factors within different gambling environments (both online and land-based) may be influencing the wagering, and more broadly the gambling risk behaviours of young men. Using semi-structured interviews with 50 Australian men (20-37 years) who gambled on sport, we explored the ways in which online and land-based environments may be risk-promoting settings for gambling. This included the appeal factors associated with gambling in these environments, factors that encouraged individuals to gamble, and factors that encouraged individuals to engage in different, and more harmful types of gambling. Interviews were conducted over the course of a year (April 2015 - April 2016). We identified a number of situational and structural factors that promoted risky gambling environments for young men. In the online environment, gambling products had become exceedingly easy to access through mobile technologies, with young men subscribing to multiple accounts to access industry promotions. The intangibility of money within online environments impacted upon risk perceptions. In land-based environments, the social rituals associated with peer group behaviour and sport influenced risky patterns of gambling. The presence of both gambling and alcohol in pub environments led individuals to gamble more than they normally would, and on products that they would not normally gamble on. Land-based venues also facilitated access to multiple forms of gambling under the one roof. We identified a number of factors in both land and online environments that when combined, created risk-promoting settings for gambling among young men. By exploring these contextual conditions that give rise to gambling harm, we are better able to advocate for effective public health responses in creating environments that prevent harmful gambling.

Social structure and landscape genetics of the endemic New Caledonian ant Leptomyrmex pallens Emery, 1883 (Hymenoptera: Formicidae: Dolichoderinae), in the context of fire-induced rainforest fragmentation

Habitat fragmentation is a major threat to biodiversity, as it can alter ecological processes at various spatial and trophic scales. At the species level, fragmentation leading to the isolation of populations can trigger reductions in genetic diversity, potentially having detrimental effects on population fitness, adaptability and ultimately population persistence. Leptomyrmex pallens is a widespread rainforest ant endemic to New Caledonia but now confined to habitat patches that have been fragmented by anthropogenic fire regimes over the last 200 years. We investigated the social structure of L. pallens in the Aoupinié region (c.a. 4900 ha), and assessed the impacts of habitat fragmentation on its population genetic structure. Allele frequencies at 13 polymorphic microsatellite loci were compared among 411 worker ants from 21 nests distributed across the region. High within-nest relatedness (r = 0.70 ± 0.02), and a single queen found in 38 % of the nests by pedigree analysis indicate that the species is monogynous to weakly polygynous. Estimates of gene flow and genetic structure across the region were subsequently determined using a combined dataset of single workers per nest and of unrelated foraging workers. These estimates coupled with a comprehensive landscape genetic analysis revealed no evidence of significant population structure or habitat effects, suggesting that the Aoupinié region harbours a single panmictic population. In contrast, analyses of mitochondrial DNA sequence data revealed a high degree of genetic structuring, indicating limited maternal gene flow and suggesting that gene flow among nests is driven primarily by winged males. Overall these findings suggest that fire-induced habitat fragmentation has had little impact on the population dynamics of L. pallens. Additional studies of less mobile species should therefore be conducted to gain further insights into fire related disturbances on the unique biodiversity and function of New Caledonian ecosystems.