Letters to a young Catholic, by George Weigel

With the Twentieth World Youth Day in Cologne on 16-21 August, this year, scheduled to be the first overseas visit of Pope Benedict XVI, it is timely to consider the latest book from George Weigel, (perhaps best known for his Witness to Hope: The Biography of John Paul II) in which he composes 14 letters specifically aimed at young Catholics, who, like many of their older counterparts, may well be wondering what it means to be a Catholic today.

Weinstein, Blatter, Cavan, Wallace

Michael Weinstein (left) and George Wallace (right), respectively Chairman and Secretary of the Victorian Soccer Federation, flank Sepp Blatter (then General Secretary of FIFA) and Harry Cavan of Northern Ireland and Vice President of FIFA, during a 1980 planning meeting for the forthcoming World Youth Cup to be hosted by Australia in 1981.

Statistical detection of online drifting twitter spam

Spam has become a critical problem in online social networks. This paper focuses on Twitter spam detection. Recent research works focus on applying machine learning techniques for Twitter spam detection, which make use of the statistical features of tweets. We observe existing machine learning based detection methods suffer from the problem of Twitter spam drift, i.e., the statistical properties of spam tweets vary over time. To avoid this problem, an effective solution is to train one twitter spam classifier every day. However, it faces a challenge of the small number of imbalanced training data because labelling spam samples is time-consuming. This paper proposes a new method to address this challenge. The new method employs two new techniques, fuzzy-based redistribution and asymmetric sampling. We develop a fuzzy-based information decomposition technique to re-distribute the spam class and generate more spam samples. Moreover, an asymmetric sampling technique is proposed to re-balance the sizes of spam samples and non-spam samples in the training data. Finally, we apply the ensemble technique to combine the spam classifiers over two different training sets. A number of experiments are performed on a real-world 10-day ground-truth dataset to evaluate the new method. Experiments results show that the new method can significantly improve the detection performance for drifting Twitter spam.

Interrogating conceptions of “vulnerable youth” in theory, policy and practice

Young people who are considered ‘vulnerable’ or ‘at risk’ are a particular target of various policies, schemes and interventions. But what does vulnerability mean? Interrogating Conceptions of “Vulnerable Youth” explores this question in relation to various policy fields that are relevant to young people, as well for how this plays out in practice and how it is experienced by young people themselves. What makes this book unique is that most authors had the opportunity to jointly explore these issues during a two-day workshop, and their chapters are informed by their cross-agency and cross-discipline discussions, making for a nuanced and thoughtful set of contributions. This collection is highly recommended for researchers and research students in the social sciences, as well as professional staff working in youth policy and youth services, in government departments and in NGOs. “Those who are most vulnerable should receive our greatest moral attention. However, the translation of generalised moral principles into effective policy and programs has never been easy. Political interests have invariably intervened, leading to complex debates about how vulnerability should be defined, classified, measured and represented. In recent years, these debates have become further complicated, as nation-states around the world have preached austerity. This timely book suggests that the responsibility for protecting the vulnerable cannot be left to individuals, but demands collective action, through institutions such as education, health and welfare. It examines some of the ways in which public policies and programs represent those who are vulnerable, involving a range of assumptions about the social, economic and political conditions that produce their vulnerabilities.” From the Foreword by Professor Fazal Rizvi

Youth Depression Alleviation-Augmentation with an anti-inflammatory agent (YoDA-A): protocol and rationale for a placebo-controlled randomized trial of rosuvastatin and aspirin

AIM: There is growing support for the role of inflammation and oxidative stress in the pathophysiology of major depressive disorder (MDD). This has led to the development of novel strategies targeting inflammation in the treatment of depression. Rosuvastatin and aspirin have well-documented, anti-inflammatory and antioxidant properties. The aim of the Youth Depression Alleviation: Augmentation with an anti-inflammatory agent (YoDA-A) study is to determine whether individuals receiving adjunctive anti-inflammatory agents, aspirin and rosuvastatin experience a reduction in the severity of MDD compared with individuals receiving placebo. METHODS: YoDA-A is a 12-week triple-blind, randomized controlled trial funded by the National Health and Medical Research Council, Australia. Participants aged 15-25, with moderate-to-severe MDD, are allocated to receive either 10 mg/day rosuvastatin, 100 mg/day aspirin, or placebo, in addition to treatment as usual. Participants are assessed at baseline and at weeks 4, 8, 12 and 26. The primary outcome is change in the Montgomery-Åsberg Depression Rating Scale (MADRS) from baseline to week 12. RESULTS: The study is planned to be completed in 2017. At date of publication, 85 participants have been recruited. CONCLUSION: Timely and targeted intervention for youth MDD is crucial. Given the paucity of new agents to treat youth MDD, adjunctive trials are not only pragmatic and 'real-world', but additionally aim to target shortfalls in conventional medications. This study has the potential to first provide two new adjunctive treatment options for youth MDD; aspirin and rosuvastatin. Second, this study will serve as proof of principle of the role of inflammation in MDD.

Standing classrooms : research and lessons learned from around the world

Children spend between 50 and 70 % of their time sitting while at school. Independent of physical activity levels, prolonged sitting is associated with poor health outcomes in adulthood. While there is mixed evidence of health associations among children and adolescents, public health guidelines in the USA, UK, Australia and Canada now recommend young people should break up long periods of sitting as frequently as possible. A potentially effective approach for reducing and breaking up sitting throughout the day is changing the classroom environment. This paper presents an overview of a relatively new area of research designed to reduce youth sitting time while at school by changing the classroom environment (n = 13 studies). Environmental changes included placement of height-adjustable or stand-biased standing desks/workstations with stools, chairs, exercise balls, bean bags or mats in the classroom. These 13 published studies suggest that irrespective of the approach, youth sitting time was reduced by between ~44 and 60 min/day and standing time was increased by between 18 and 55 min/day during classroom time at school. Other benefits include increased energy expenditure and the potential for improved management of students' behaviour in the classroom. However, few large trials have been conducted, and there remains little evidence regarding the impact on children's learning and academic achievement. Nevertheless, with an increasing demand placed on schools and teachers regarding students' learning outcomes, strategies that integrate moving throughout the school day and that potentially enhance the learning experience and future health outcomes for young people warrant further exploration.

Anzac day in the new millennium: insights from New Zealand millennials

Since 1916, New Zealanders have honoured soldiers of war on the 25th of April at commemorative events. The day is now known as Anzac Day, and the acronym ‘Anzac’ stands for the Australian and New Zealand Army Corps, which was established in World War I. Anzac Day commemorative events are emerging a popular cultural activity in which New Zealanders, many of whom are young, are now participating. From an event management perspective, however, the increasing popularity of attendance at the commemorative events is problematic, with potential to negatively impact the experience of attendance and the sites at which they are held. There is a need to gain a greater understanding of the experience of attendance at the events so that strategies can be developed to maintain and enhance their authenticity and integrity, while optimising their sustainability in the New Millennium.

The aim of this study was to provide information about the experience of attendance from the attendee’s perspective for later use by managers of the events. The study employed the theory of emotions to examine the consumption experience, and used a qualitative approach for this purpose. Two focus groups were undertaken in New Zealand comprised members of the generational segment, the Millennials. The data were analysed considering the literature on emotions, special event tourism, as well as the literature on dark tourism. In some ways, the special event tourism and dark tourism literatures seem to be paradoxical, however, in this study they seemed to compliment each other. A complex set of motivations, emotions and resulting attitudes, behavioural intentions, and behaviours were revealed. With this information, event managers are better able to understand the experience of attendance and consider these issues when developing strategies to manage the events. The results presented here are part of a larger study, as further data is currently being collected on the topic in Australia. Hence, there are opportunities for cross-cultural analysis about this important aspect of New Zealand, and Australian, culture.

A review of school drug policies and their impact on youth substance use

Youth substance use is an important social and health problem in the United States, Australia and other Western nations. Schools are recognized as important sites for prevention efforts and school substance use policies are a key component of health promotion in schools. The first part of this paper reviews the known status of school policies on tobacco, alcohol and other illicit drugs in a number of Western countries and the existing evidence for the effectiveness of school drug policy in preventing drug use. The review shows that most schools in developed countries have substance use policies but that there is substantial variation in the comprehensiveness of these policies (i.e. the breadth of people, places and times of day that are explicitly subject to policy prohibitions), and the orientation of their enforcement (e.g. punitive versus remedial), both across and within schools. The few studies of policy impact focus solely on tobacco policy and provide preliminary evidence that more comprehensive and strictly enforced school policies are associated with less smoking. The second part of the paper introduces the International Youth Development Study, a new longitudinal research project aimed at comparing school policies and the developmental course of youth drug use in the United States, where drug policies are abstinence-based, with Australia, which has adopted a harm minimization approach to drug policy

Combating homophobia : preliminary results of a school-based program to reduce discrimination against same-sex attracted youth

Two key determinants of mental health are (a) freedom from discrimination and (b) social connectedness. Same-sex attracted youth who are subjected to violence and discrimination, or who experience homophobia in their everyday lives are at greater risk of mental health problems, including suicidal thoughts and behaviours. As one of the most significant sites of homophobia is the school, a 6-week school-based program designed to help students explore their attitudes to gays and lesbians was developed, called “Pride & Prejudice”. In order to evaluate the usefulness of the program, students’ attitudes were measured before and after their participation. Variables assessed were: beliefs about gender roles, social desirability, attitudes to gay men and lesbians, social connectedness, self-esteem, and attitudes to race. Attitudes towards gay men held by students were significantly more positive after the program, and the level of attendance during the program significantly predicted > this change. A significant positive change also occurred in attitudes towards lesbians. Process evaluation showed that students generally viewed the program positively. From this preliminary data, it can be concluded that school-based programs delivered to individual classes in which students are given the opportunity to explore their attitudes towards lesbians and gay men are likely to lead to a significant reduction in homophobia. Health-promoting schools now have available to them an effective tool for promoting opportunities for students to reflect on their attitudes towards gay men and lesbians, and other aspects of “social diversity”. It is hoped that school-wide implementation of such a program will eventually lead to a reduction in the discrimination same-sex attracted youth often experience (either directly, or indirectly), and improve the social-connectedness of all students.

Evidence based approaches to youth justice

This monograph was originally prepared as part of a review of services and programs offered in youth justice facilities in South Australia for the Office of the Guardian for Children andYoung People.

Dose-response associations between screen time and overweight among youth

Objective. To examine dose-response associations between screen time and overweight, independent of physical activity and dietary intake.

Methods. Participants were 580 Dutch youth (13 years; 48% boys). Body mass index, waist circumference and skinfold thickness at four sites determined weight status. Questionnaires examined television viewing and computer use, participation in organized sport and high caloric snack and sugar-containing beverage consumption.

Results. There were no significant associations among boys. Compared with girls spending less than two hours/day in screen time, those who spent three to four hours/day were more likely to be classified as overweight by waist circumference (odds ratio [OR]=3.4; 95% confidence intervals [CI]=1.1-10.7; p=0.03), and this likelihood increased substantially among those spending more than four hours/day (OR=5.5; 95% CI=2.1-14.1; p≤0.0001).

Conclusions. Girls who spend three or more hours/day in screen time are at increased risk of being classified as overweight by waist circumference.