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1.
Time spent on social media and making online comparisons with others may influence users’ mental health. This study examined links between parental control over the time their child spends on social media, preadolescents’ time spent browsing social media, preadolescents’ appearance comparisons on social media, and preadolescents’ appearance satisfaction, depressive symptoms, and life satisfaction. Preadolescent social media users (N?=?284, 49.1% female; aged 10–12) and one of their parents completed online surveys. Preadolescents, whose parents reported greater control over their child’s time on social media, reported better mental health. This relationship was mediated by preadolescents spending less time browsing and making fewer appearance comparisons on social media. Parental control over time spent on social media may be associated with benefits for mental health among preadolescents.  相似文献   
2.
This paper reports new time-series for the numbers and sizes of churches in Denmark over a 715-year period. Per capita, the new series are termed church densities. A pattern emerges in the series that corresponds to the main development in the economy: until 1750, the economy was in the traditional steady state, where church densities were high and did not decline substantially. Modern development set in after 1750. Since then, church densities have declined more than five times. Moreover, capacity utilization of church rooms has declined, which means that the reduction in the demand for churches must have been even larger. We argue that this large decline is caused by a fall in religiosity that is caused by economic development as measured by the rise in incomes. In parallel with similar transitions in other sectors, e.g., the Agricultural Transition, it is termed the Religious Transition.  相似文献   
3.
This ecological study examined the association between seven socioeconomic indicators (GDP, unemployment rate, female labor force participation rate, alcohol expenditure, marriage rate, percentage of births outside of marriage, and indictable crime rate) and total, male, and female rates of suicide and suicide plus undetermined death in Ireland during the period 1968-2000. Analysis of the data expressed as absolute values showed highly significant associations between the socioeconomic indicators and the total, male, and female suicide rates. However, these associations were explained by the strongly trended data. The trended nature of the data was removed by using year-to-year differences. Analysis of the first-differenced data showed that none of the socioeconomic indicators was associated with the total, male, or female suicide rates with the exception of indictable crime, which had a significant independent effect on the female suicide rate (coefficient = 2.0, p < .01) but not on suicide plus undetermined death. This study highlights the need to use econometric methods in time-trend analyses, the lack of age-sex specific exposure data in this area, and the challenge of understanding trends in suicide in their socioeconomic context.  相似文献   
4.
The transformation process of East European (EE) countries led to the disappearance of the Council for Mutual Economic Assistance, the former Soviet-bloc economic integration scheme, as well as to other changes in the foreign trade sector of those economies. This study seeks to identify the potential long run modifications in the volume of trade of EE countries by using a well-established model employed in the foreign trade literature, the gravity equation. Quantitative results suggest that in the next decades trade between East and West European countries could double from its present level.  相似文献   
5.
No Room     
In 2015, Russia's judicial system saw a marked expansion in the repressive activity of the law enforcement bodies. For the first time in many years, there was a significant rise in the frequency of sentences involving imprisonment, while standards of proof in the Russian courts declined. The judiciary tried to compensate for its inability to resist pressure from the law enforcement bodies through the unprecedented application of amnesty in court verdicts. Sporadically declared amnesties have become almost the only thing protecting the Russian penal system from overcrowding.  相似文献   
6.
Abstract

Extensive social psychological research emphasises the importance of groups in shaping individuals' thoughts and actions. Within the child sexual abuse (CSA) literature criminal organisation has been largely overlooked, with some key exceptions. This research was a novel collaboration between academia and the UK's Child Exploitation and Online Protection Centre (CEOP). Starting from the premise that the group is, in itself, a form of social situation affecting abuse, it offers the first systematic situational analysis of CSA groups. In-depth behavioural data from a small sample of convicted CSA group-offenders (n =3) were analysed qualitatively to identify factors and processes underpinning CSA groups' activities and associations: group formation, evolution, identity and resources. The results emphasise CSA groups' variability, fluidity and dynamism. The foundations of a general framework are proposed for researching and assessing CSA groups and designing effective interventions. It is hoped that this work will stimulate discussion and development in this long-neglected area of CSA, helping to build a coherent knowledge-base.  相似文献   
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We show that the optimal prize structure of symmetric n-player Tullock tournaments assigns the entire prize pool to the winner, provided that a symmetric pure strategy equilibrium exists. If such an equilibrium fails to exist under the winner-take-all structure, we construct the optimal prize structure which improves existence conditions by dampening efforts. If no such optimal equilibrium exists, no symmetric pure strategy equilibrium induces positive efforts.  相似文献   
10.
Peasant Uprisings in Seventeenth‐century France, Russia, and China by Roland Mousnier, translated by Brian Pearce, London: Allen and Unwin, 1971. Pp. xx + 358; £4.50.  相似文献   
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