Older women's cardiovascular responses to deep-water running

The aim of the study was to examine submaximal and maximal physiological responses and perceived exertion during deep-water running with a vest compared with the responses during treadmill running in healthy elderly women. Eleven healthy women 70 +/- 2 years old participated. On two different occasions they performed a graded maximal exercise test on a treadmill on land and a graded maximal exercise test in water wearing a vest. At maximal work the oxygen uptake was 29% lower (p < .05), the heart rate was 8% lower (p < .05), and the ventilation was 16% lower (p < .05) during deep-water running than during treadmill running. During submaximal absolute work the heart rate was higher during deep-water running than during treadmill running for the elderly women. The participants had lower maximal oxygen uptake, heart rate, ventilation, respiratory-exchange ratio, and rate of perceived exertion during maximal deep-water running with a vest than during maximal treadmill running. These responses were, however, higher during submaximal deep-water running than during treadmill running.     

Optimal planning of phase II/III programs for clinical trials with multiple endpoints

Owing to increased costs and competition pressure, drug development becomes more and more challenging. Therefore, there is a strong need for improving efficiency of clinical research by developing and applying methods for quantitative decision making. In this context, the integrated planning for phase II/III programs plays an important role as numerous quantities can be varied that are crucial for cost, benefit, and program success. Recently, a utility‐based framework has been proposed for an optimal planning of phase II/III programs that puts the choice of decision boundaries and phase II sample sizes on a quantitative basis. However, this method is restricted to studies with a single time‐to‐event endpoint. We generalize this procedure to the setting of clinical trials with multiple endpoints and (asymptotically) normally distributed test statistics. Optimal phase II sample sizes and go/no‐go decision rules are provided for both the “all‐or‐none” and “at‐least‐one” win criteria. Application of the proposed method is illustrated by drug development programs in the fields of Alzheimer disease and oncology.     

Program implementation and evaluation results: A reexamination of type III error in a field experiment

This paper reexamines the implementation results obtained from a true experiment in criminal justice. The original analyses found a significant difference in employment outcome between the control group and those experimental clients who received the highest level of treatment. The present analyses attempt to bracket true treatment effects by partitioning both experimental and control groups into treated and untreated subgroups, and by combining data from two independent sources. The original results do not obtain when implementation of the control treatment is also considered in the analysis. Corroborating earlier findings, a positive association was found between magnitude of experimental treatment implementation and employment, but it was unclear that the experimental program was responsible for this relationship. The limitations of the experimental design for disentangling effective components of treatment are discussed. The paper provides an example of the utility of secondary analysis for understanding evaluation results.     

Adolescent Immigrants' Well-Being: The Case of Ethnic German Immigrants in Germany

About 3.5 million citizens in Germany are so-called Aussiedler.This is a group of ethnic Germans whose ancestors used to live in various countries of Eastern and Southeastern Europe. The political changes in the post-Soviet nations resulted in a steady influx of ethnic Germans, who in most regards resemble immigrants but, due to particularities of German laws, are eligible for immediate citizenship in contrast to about 8 million former guest workers and their families who are treated as aliens. In this article, we report a study on 220 adolescent Aussiedler and their parents. In a four-wave longitudinal design, the course of well-being after immigration and some predictors of individual differences in their adaptation were investigated for a group of novices (0 to 18 months of residence in Germany) and a group of experienced Aussiedler (19–36 months of residence), both on average 13.5 years of age. Results showed, first, that in line with previous research on immigrants in other cultures, well-being gradually improved from rather low levels soon after immigration. Second, the predictors of inter-individual differences were distinguished by length of residence. Among the experienced group, more improved levels of well-being were observed at the final assessment, if the adolescents shared their families' decision to emigrate, were given more leeway for their own decisions, came from families with higher cohesion, and engaged in leisure activities with local age-mates. In contrast, newcomers were better off affectively if their parents shared less collectivist value orientations and if they entertained fewer contacts with local peers. These distinct patterns were interpreted against the backdrop of social comparison processes with local German age-mates. The article concludes with some informed speculations about differences from other groups of immigrants in Germany.     

Estimating Particle Shape and Orientation Using Volume Tensors

We develop statistical procedures for estimating shape and orientation of arbitrary three‐dimensional particles. We focus on the case where particles cannot be observed directly, but only via sections. Volume tensors are used for describing particle shape and orientation, and we derive stereological estimators of the tensors. These estimators are combined to provide consistent estimators of the moments of the so‐called particle cover density. The covariance structure associated with the particle cover density depends on the orientation and shape of the particles. For instance, if the distribution of the typical particle is invariant under rotations, then the covariance matrix is proportional to the identity matrix. We develop a non‐parametric test for such isotropy. A flexible Lévy‐based particle model is proposed, which may be analysed using a generalized method of moments in which the volume tensors enter. The developed methods are used to study the cell organization in the human brain cortex.     

Disordered Gambling among Chinese Casino Employees

A previous study suggests that casino employees are at higher risk for disordered gambling than non-casino employees. The present study examined the cognitive correlates of the gambling involvement of Chinese casino employees. These potential cognitive correlates included attitudes toward the gaming industry and gambling activities, perceived job meaningfulness, and job stress. One hundred and nineteen Chinese respondents (M = 57; F = 62) working as dealers in Macao casinos were recruited through convenience sampling to fill out a questionnaire. The results revealed that about 7% of the respondents scored 10 or more on the South Oaks Gambling Screen and engaged in disordered gambling. Path analysis showed that attitude toward the gaming industry had a positive impact on job meaningfulness, which largely explained variances of job stress among casino employees. Job stress had a significant, but weak, direct impact on disordered gambling. Though causality between variables cannot be confirmed, this study provided insights into the impacts of cognitive factors on gambling involvement among Chinese front-line employees in the gaming industry. Implications of the findings were also discussed.     

How to partly bounce back the struggle against illegal immigration to the source countries

Recent models on the dynamics of immigration control claim that tightening internal borders may trigger the formation of networks supporting clandestine foreign workers. This may, in turn, increase the overall stock of illegal immigrants in the economy. One possible solution to this threatening situation might be to partly bounce back the struggle against illegal immigration to the source countries. This paper suggests that under certain conditions, the receiving country should direct some of the resources earmarked for coping with the problem of the illegal flow of workers to financially supporting the source countries, allowing them to compete among themselves for such aid. This support would be allocated according to the relative effort made by each source country in curbing illegal immigration, thereby motivating them to moderate the phenomenon. The model is also applicable to other fields of negative externalities, such as the smuggling of drugs and weapons, terrorism, and pollution.

New Uses of Outcomes Measures Under Austerity: the Case of Danish Municipalities

This article argues that the use of performance information may change according to economic circumstances. In a fiscal crisis, policy-makers likely demand less documentation of service quality, but under longer-term term austerity they can use performance information, including outcomes measures, to target and reallocate scarce resources across organizational boundaries. The argument is tested in an analysis of six Danish municipalities after the financial crisis. In these cases, performance information was used in new ways. For instance, outcomes measures were linked to overall strategies and used in the budgeting process to promote the reallocation of resources towards more effective services.     

‘We are just ordinary people working hard to reach our goals!’ Disabled students’ participation in Norwegian higher education

In this article we shed light on the experiences of disabled students attending professional courses in higher education in Norway. The findings from this empirical study are based on interviews with 14 students with diverse impairments, ranging from the visible to the invisible. They faced barriers that they resolved to address on their own, using their capabilities and working ‘in silence’ to meet the expectations of normal students in academia as strong and independent. In addition to their own motivation and self-determination, what facilitated their progress in their studies was that some of the staff and fellow students met them respectfully as ordinary students, while recognizing their strain and providing support without calling attention to it. Leaning on the Nordic Relational Model of Disability, we call for greater awareness of the complex interactional processes between the disabled students and people in their social environment.