The Internet and youth engagement: An exploration of how youth spend their time online and its relation to civic involvement

A study was conducted to investigate the relationship between Internet use and civic involvement in youth. Participants consisted of 378 youth between the ages of 16 and 25 from across Canada. Participants completed an online questionnaire consisting of a measure called the Youth Inventory of Involvement, designed to assess civic involvement in youth. Brief measures of introversion/extraversion and depression were also completed. Participants then completed questions designed to assess the amount of time they spend online in an average week, as well as for what they use the Internet. Results indicate that there may be a non-linear relationship between amount of time spent online and involvement, with individuals at the extremes in terms of very low or very high Internet use showing lower levels of involvement than more moderate users. Different types of Internet users were identified and also differed in involvement. Contrary to some previous research a link between Internet use and depression was found. This study provides important evidence that a link between Internet use and involvement in youth does in fact exist and also identifies specific types of online activities that were found to be related to both involvement and psychological well-being

A history of high-power laser research and development in the United Kingdom

The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, academia, industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications. This historical review looks at the contribution the UK has made to the advancement of the technology, the development of systems and components and their exploitation over the last 60 years

Relapse Patterns in NMOSD: Evidence for Earlier Occurrence of Optic Neuritis and Possible Seasonal Variation

Neuromyelitis optica spectrum disorders (NMOSD) and multiple sclerosis (MS) show overlap in their clinical features. We performed an analysis of relapses with the aim of determining differences between the two conditions. Cases of NMOSD and age- and sex-matched MS controls were collected from across Australia and New Zealand. Demographic and clinical information, including relapse histories, were recorded using a standard questionnaire. There were 75 cases of NMOSD and 101 MS controls. There were 328 relapses in the NMOSD cases and 375 in MS controls. Spinal cord and optic neuritis attacks were the most common relapses in both NMOSD and MS. Optic neuritis (p < 0.001) and area postrema relapses (P = 0.002) were more common in NMOSD and other brainstem attacks were more common in MS (p < 0.001). Prior to age 30 years, attacks of optic neuritis were more common in NMOSD than transverse myelitis. After 30 this pattern was reversed. Relapses in NMOSD were more likely to be treated with acute immunotherapies and were less likely to recover completely. Analysis by month of relapse in NMOSD showed a trend toward reduced risk of relapse in February to April compared to a peak in November to January (P = 0.065). Optic neuritis and transverse myelitis are the most common types of relapse in NMOSD and MS. Optic neuritis tends to occur more frequently in NMOSD prior to the age of 30, with transverse myelitis being more common thereafter. Relapses in NMOSD were more severe. A seasonal bias for relapses in spring-summer may exist in NMOSD.</p

Making sense of research into the organizational and social aspects of management accounting: a review of its underlying assumptions

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