Childhood family structure and schooling outcomes: evidence for Germany

We analyze the impact on schooling outcomes of growing up in a non-intact family in Germany. We find that this experience is associated with worse outcomes according to estimates from models that do not control for possible correlations between common unobserved determinants of family structure and educational performance. Evidence of adverse effects emerges also when endogeneity is accounted for. In such cases, however, the point estimates are typically smaller, and their confidence intervals are large enough to include zero, particularly for individuals who grew up in Western Germany.     

Artistic separation versus artistic mixing in European multicultural cities

This introductory article discusses the diversification of diversity in Europe. It then looks at the tension between ethnic separation and ethnic mixing in urban Europe in general terms. The next section elaborates on a similar tension in the field of popular arts. Finally, the article presents the main insights of the contributions to the special issue.     

Evaluation of the health risks to garment workers in the city of Xambrê-PR, Brazil

This study evaluated the risks for cardiovascular disease and the life habits of garment industry workers in northwestern Paraná state, Brazil. The following parameters were assessed: body composition, cardiorespiratory fitness, eating habits and physical activities by garment industry workers. Cardiovascular risk was observed in some of the studied subjects, in the form of high BMI and reduced maximal oxygen uptake. The development of a workplace quality-of-life program is suggested, aiming to stimulate the development of physical activities to improve the cardiovascular conditioning of workers.     

Effects of pushing height on trunk posture and trunk muscle activity when a cart suddenly starts or stops moving

Unexpected sudden (un)loading of the trunk may induce inadequate responses of trunk muscles and uncontrolled trunk motion. These unexpected perturbations may occur in pushing tasks, when the cart suddenly starts moving (unloading) or is blocked by an obstacle (loading). In pushing, handle height affects the user's working posture, which may influence trunk muscle activity and trunk movement in response to the perturbation. Eleven healthy male subjects pushed a 200 kg cart with handles at shoulder and hip height in a start condition (sudden release of brakes) and a stop condition (bumping into an obstacle). Before the perturbation, the baseline of the trunk inclination, internal moment and trunk extensor muscle activity were significantly higher when pushing at hip height than at shoulder height. After the perturbation, the changes in trunk inclination and internal moment were significantly larger when pushing at shoulder height than at hip height in both conditions. The opposite directions of changes in trunk inclination and internal moment suggest that the unexpected perturbations caused uncontrolled trunk motion. Pushing at shoulder height may impose a high risk of low-back injury due to the low trunk stiffness and large involuntary trunk motion occurring after carts suddenly move or stop.     

Effects of long-acting testosterone undecanoate on bone mineral density in middle-aged men with late-onset hypogonadism and metabolic syndrome: results from a 36 months controlled study

We evaluated the effects of long-term testosterone replacement therapy (TRT) on the bone mineral density (BMD) in obese patients with metabolic syndrome (MS) and late-onset hypogonadism (LOH). Sixty men (mean age 57 ± 10) with low serum testosterone (T < 320 ng/dL) and MS regardless the presence of osteoporosis were enrolled. Forty men received intramuscular T-undecanoate (TU) four times/year for 36 months and 20 age-matched hypogonadal men with MS in whom T treatment was contraindicated were used as controls. Hormonal, biochemical markers, vertebral and femoral BMD by dual-energy x-ray absorptiometry were measured. At baseline, overall patients had mild osteopenia (lumbar BMD= 0.891 ± 0.097 g/cm(2); femoral BMD= 0.847 ± 0.117 g/cm(2)). TU induced a significant improvement of bone mass after 36 months (lumbar BMD=1.053 ± 0.145 g/cm(2); p < 0.002; femoral BMD=0.989 ± 0.109; p < 0.003 g/cm(2)) with a 5%/year increase and a significant reduction in hs-CRP without changes in body mass index. A direct relationship between serum T and BMD increments at the lumbar (r(2)?= 0.66, p < 0.0001) and femoral (r(2)?=0.52, p < 0.0001) sites was demonstrated. Study adherence was 50% without serious side effects. Long-term TRT in middle-aged men with LOH and MS determines a significant increase in both vertebral and femoral BMD related to increased serum T levels, probably independently from estradiol modifications.     

The Role of Social Capital in the Start-Up of Non-profit Organisations: The Case of Fondazione Welfare Ambrosiano

This article investigates how a start-up foundation can build its organisational social capital, meaning a network of strategic partnerships with other organisations based on trust relationships, in order to fulfil its mission. Based on a case study analysis of Fondazione Welfare Ambrosiano—an Italian foundation created in partnership with private organisations and local public institutions—we explored whether and how some characteristics of the social capital of the foundation’s members contributed to the organisational social capital. By applying Nahapiet and Ghoshal’s (Acad Manag Rev 23(2):242–266, 1998) social capital framework, we discovered that the social capital configuration of the founders and staff, linked to some characteristics of the foundation, had driven the development of the organisational social capital. Our paper contributes to an understanding of what constitutes the best configuration of social capital to allow a start-up foundation to take off.     

Nash Bargaining Theory,Nonconvex Problems and Social Welfare Orderings

In this paper we deal with the extension of Nash bargaining theory to nonconvex problems. By focussing on the Social Welfare Ordering associated with a bargaining solution, we characterize the symmetric Nash Bargaining Solution (NBS). Moreover, we obtain a unified method of proof of recent characterization results for the asymmetric single-valued NBS and the symmetric multivalued NBS, as well as their extensions to different domains.     

Adjusting for centre heterogeneity in multicentre clinical trials with a time‒to‒event outcome

Conducting a clinical trial at multiple study centres raises the issue of whether and how to adjust for centre heterogeneity in the statistical analysis. In this paper, we address this issue for multicentre clinical trials with a time?to?event outcome. Based on simulations, we show that the current practice of ignoring centre heterogeneity can be seriously misleading, and we illustrate the performances of the frailty modelling approach over competing methods. A special attention is paid to the problem of misspecification of the frailty distribution. The appendix provides sample codes in R and in SAS to perform the analyses in this paper. Copyright © 2014 John Wiley & Sons, Ltd.     

The multisample Cucconi test

The multisample version of the Cucconi rank test for the two-sample location-scale problem is proposed. Even though little known, the Cucconi test is of interest for several reasons. The test is compared with some Lepage-type tests. It is shown that the multisample Cucconi test is slightly more powerful than the multisample Lepage test. Moreover, its test statistic can be computed analytically whereas several others cannot. A practical application example in experimental nutrition is presented. An R function to perform the multisample Cucconi test is given.