Using social marketing to increase the use of helmets among bicyclists

In this study, the authors investigated a social marketing intervention to increase the use of bicycle helmets on a university campus in the southeastern United States. Focus groups of students developed a bicycle helmet program slogan and logo (ie, "The Grateful Head"). The authors trained student bicyclists who already used helmets (n=15) as peer agents. These agents provided bicycle helmet information and asked fellow bicyclists to sign a pledge card to wear a helmet. They gave a coupon for a free helmet to those who pledged to wear a helmet. The authors received a total of 379 pledge cards and distributed 259 helmets. Bicycle helmet use rose from a baseline mean of 27.6% to a mean of 49.3% by the last week of the intervention.     

An ergonomic comparison between mechanical and manual patient transfer techniques

Multiple studies have concluded that manual patient transfer and repositioning techniques are a significant cause of low back injuries. The objective of this study was to compare the low back stresses resulting from the use of two different mechanical patient transfer assist devices with the use of traditional manual transfer techniques. The mechanical transfer systems used were the Barton Patient Transfer System and a Sling-Suspension Lift similar to a "Hoyer Lift". The back compressive forces derived using the Michigan 3D Static Strength Model (Version 4.0) and electromyography (EMG) of the muscles of the low back were compared. This study found that the mechanical assist devices placed less stress on the low back and were more desirable to use than the traditional manual techniques. The Barton System was found to be, in general, less hazardous and more preferred than the Sling Suspension Lift.     

Urbanization and warming of Phoenix (Arizona,USA): Impacts,feedbacks and mitigation

This paper examines the impacts, feedbacks, and mitigation of the urban heat island in Phoenix, Arizona (USA). At Sky Harbor Airport, urbanization has increased the nighttime minimum temperature by 5°C and the average daily temperatures by 3.1°C. Urban warming has increased the number of misery hours per day for humans, which may have important social consequences. Other impacts include (1) increased energy consumption for heating and cooling of buildings, (2) increased heat stress (but decreased cold stress) for plants, (3) reduced quality of cotton fiber and reduced dairy production on the urban fringe, and (4) a broadening of the seasonal thermal window for arthropods. Climate feedback loops associated with evapotranspiration, energy production and consumption associated with increased air conditioning demand, and land conversion are discussed. Urban planning and design policy could be redesigned to mitigate urban warming, and several cities in the region are incorporating concerns regarding urban warming into planning codes and practices. The issue is timely and important, because most of the world's human population growth over the next 30 years will occur in cities in warm climates.     

Social Policy as Social Risk Management

With the growing sophistication in social policy instruments and the advances made in the analysis of their impact, it became clear that the analytical separation of social policy and social security policy from other policy areas is increasingly difficult. The paper discusses a new analytical approach based on the social management of risks. It redefines social policy as public interventions to assist individuals and households to cope with their risks. The conceptual framework starts with the notion of main needs and defines and subdivides the risks threatening the satisfaction of these main needs. An important feature of the framework is that social policy is not only linked to the satisfaction of the main needs at a certain moment, but to the risk that, at a certain moment in the life-course of an individual, the needs cannot not be satisfied. Social policy is then no longer solely focussed on the guaranteeing that all individuals in an economy can fulfil their main needs in a static framework. Quite the contrary, social policy is focused on preventing contingencies to materialize, on mitigating the effects before they materialize and on coping with the unfortunate moment bad luck, shocks or unfortunate events strike. The social risk management framework rests on the observation that the satisfaction of main needs and the management of risks, is not the sole responsibility of public authorities. Social welfare is produced by at least three institutions symbolically summarized as the social welfare triangle of which markets, families and public authorities form the corner points.     

European Cohesion? Globalization,Autonomization, and the Dynamics of EU Integration

Globalization is frequently assumed to be responsible for creating the economic environment in which a much greater degree of European Union (EU) economic integration is deemed necessary. In contrast, this paper argues that globalization, in conjunction with neo-liberal growth, has led to autonomization as well as integration. The term autonomization designates both that economic governance is increasingly delegated to autonomous regions, and that neo-liberal economic policies tend to fragment and divide in their pursuit of growth. The paper investigates the tension between the role in which globalization has cast the region, and the region as a central player in the EU's cohesion strategy. Cohesion policy-measures to combat underdevelopment and backwardness-plays a key role in integration and growth strategies. It is argued that cohesion has become detached from its redistributive origins and incorporated in a discourse of competitiveness and growth. The region has emerged as both the site upon which the global acts upon the EU, and the level at which the EU has determined that the processes of globalization can best be accommodated. It is suggested that the tension between cohesion and autonomization introduced by globalization is a central dynamic at work in the contemporary EU.     

Uncertainty and Risk in Financial Markets

This paper considers a general equilibrium model in which the distinction between uncertainty and risk is formalized by assuming agents have incomplete preferences over state‐contingent consumption bundles, as in Bewley (1986). Without completeness, individual decision making depends on a set of probability distributions over the state space. A bundle is preferred to another if and only if it has larger expected utility for all probabilities in this set. When preferences are complete this set is a singleton, and the model reduces to standard expected utility. In this setting, we characterize Pareto optima and equilibria, and show that the presence of uncertainty generates robust indeterminacies in equilibrium prices and allocations for any specification of initial endowments. We derive comparative statics results linking the degree of uncertainty with changes in equilibria. Despite the presence of robust indeterminacies, we show that equilibrium prices and allocations vary continuously with underlying fundamentals. Equilibria in a standard risk economy are thus robust to adding small degrees of uncertainty. Finally, we give conditions under which some assets are not traded due to uncertainty aversion.     

Schooling and Labor Market Impacts of a Natural Policy Experiment

Abstract. We use a nationally representative household survey to estimate returns to schooling in Venezuela from instrumental variables based on a supply‐side intervention in the education market. These estimates apply to a subgroup of individuals, in the spirit of the local average treatment effect (LATE) literature. Returns to schooling estimates that apply to a subgroup of individuals affected by the policy intervention may be more interesting from a policy perspective than the return to the ‘average’ individual. We use an instrument based on the 1980 education reform (the Organic Law of Education), which provided for 9 years of compulsory basic education. Alternative estimates derived from interacting the education reform with father's education are also obtained. The estimates are consistent with recent findings suggesting that the effect of education, at least for certain subgroups affected by policy intervention, is as large as or larger than what is suggested by ordinary least squares estimates.     

Assessing safety at the end of clinical trials using system organ classes: A case and comparative study

Recent approaches to the statistical analysis of adverse event (AE) data in clinical trials have proposed the use of groupings of related AEs, such as by system organ class (SOC). These methods have opened up the possibility of scanning large numbers of AEs while controlling for multiple comparisons, making the comparative performance of the different methods in terms of AE detection and error rates of interest to investigators. We apply two Bayesian models and two procedures for controlling the false discovery rate (FDR), which use groupings of AEs, to real clinical trial safety data. We find that while the Bayesian models are appropriate for the full data set, the error controlling methods only give similar results to the Bayesian methods when low incidence AEs are removed. A simulation study is used to compare the relative performances of the methods. We investigate the differences between the methods over full trial data sets, and over data sets with low incidence AEs and SOCs removed. We find that while the removal of low incidence AEs increases the power of the error controlling procedures, the estimated power of the Bayesian methods remains relatively constant over all data sizes. Automatic removal of low-incidence AEs however does have an effect on the error rates of all the methods, and a clinically guided approach to their removal is needed. Overall we found that the Bayesian approaches are particularly useful for scanning the large amounts of AE data gathered.     

Sleepless in school? The social dimensions of young people’s bedtime rest and routines

There are increasing concerns that social pressures, such as family changes and social media, are ‘invading’ the sanctuary of the bedroom with the result that students arrive at school tired and stressed. This paper seeks to examine whether these concerns are justified and contribute to the growing literature on the social dimensions of sleep through examining the rest and routines of two cohorts of young people aged 12–13 and 14–15 years old. Our research indicates that, in general, most young people have ‘reasonable’ amounts of sleep and routines. But, a significant proportion does go to school tired, with apparent negative consequences for their well-being. The paper examines some of the within-cohort variations, in particular, the significance of volume of sleep, routines and engagement with social media and how these may reflect the material and cultural circumstances of the young people. The paper concludes by arguing for more research on the complex social causes and consequences of sleep deprivation among today’s youth.     

The Influence of Competition on Resource Allocation in Preschool Children

To examine how competition influences resource allocation in 4‐ to 6‐year‐olds, children were assigned to one of two conditions. In the experimental condition children colored a picture for a coloring contest whereas in the control condition they colored a picture to decorate a wall. Subsequently, all children participated in a resource allocation task with another child who was introduced as another participant in the coloring contest or who would also be coloring a picture for the wall. Finally, children were asked how many crayons (out of eight) they wanted to provide to the other child. In the resource allocation task, children made decisions about how to allocate stickers to self and other across four trial types: cost and no cost variations of both advantageous and disadvantageous inequality trials. Children were less prosocial in the experimental condition than in the control condition but only in disadvantageous inequality trials involving a cost. Children in the experimental condition withheld more crayons compared to children in the control condition. These results suggest that competition not only decreases prosocial behavior directly linked to the competition but also decreases generosity when provided with an unrelated resource allocation opportunity.