Modelling of a thermomechanically coupled forming process based on functional outputs from a finite element analysis and from experimental measurements

In this paper, measurements from experiments and results of a finite element analysis (FEA) are combined in order to compute accurate empirical models for the temperature distribution before a thermomechanically coupled forming process. To accomplish this, Design and Analysis of Computer Experiments (DACE) is used to separately compute models for the measurements and the functional output of the FEA. Based on a hierarchical approach, a combined model of the process is computed. In this combined modelling approach, the model for the FEA is corrected by taking into account the systematic deviations from the experimental measurements. The large number of observations based on the functional output hinders the direct computation of the DACE models due to the internal inversion of the correlation matrix. Thus, different techniques for identifying a relevant subset of the observations are proposed. The application of the resulting procedure is presented, and a statistical validation of the empirical models is performed.     

Entwicklung einer auf Resilienz ausgerichteten OrganisationskulturDevelopment of an organizational culture aiming resilience

This article examines how resilience of organizations can be enhanced by promoting their capability for adaptation. In a first step, the current understanding of the conceptualization of organizational resilience is compared to the resilience of individuals and teams. In a second step, the article also aims to illustrate the relationship between organizational resilience and organizational culture. Based on this, the applied research and development project “TeamSafe” in collaboration with a nuclear power plant is described as an example of a resilience-oriented training concept and a method for coping with unknown situations. In this project a multi-methodological approach (observational methods, video analysis and workshops) was chosen in order to identify relevant competencies and combine them with scientific findings. By involving simulator instructors and operating teams during the development process of the training concept, crucial action knowledge of operating teams in a nuclear power plant was gained by observations in the simulator and shared between different teams. This enabled the resilience-oriented development of the organization’s culture.     

Motives and Decisions for and Against Having Children Among Nonheterosexuals and the Impact of Experiences of Discrimination,Internalized Stigma,and Social Acceptance

Same-sex parents are increasingly a topic of public discourse. A growing number of homosexuals openly speak about their desire to have children or are already living together in different family constellations. The current study examined the decisions for or against having children and the motivations behind those decisions among nonheterosexuals living in Germany. A sample of 1,283 nonheterosexuals participated by means of an online survey. As some nonheterosexual individuals do not identify themselves with a male or female gender identity, a third category, “gender different,” was generated. Motives for (not) having children, perceptions of social acceptance, experiences of discrimination in relation to one's sexual orientation, and levels of internalized stigma were taken into account regarding their influence on the decision about parenthood. Most respondents (80%) reported that they did not have children. However, among this group, 43% stated that they had decided to have children later in their lives, 24% were undecided, and 11% had already decided against having children. The most important influences on the decision of whether to have children were respondents’ age and their desire for emotional stabilization. Negative experiences as a result of sexual orientation and internalized stigma had no impact on the decisions regarding parenthood.     

Life satisfaction in subjects with chronic obstructive pulmonary disease

OBJECTIVES: To examine the levels of life satisfaction for patients with chronic obstructive disease (COPD) and to explore the relationships between life satisfaction, lung function, walking distance test/exercise capacity and quality of life. STUDY DESIGN: The population comprised 91 patients with COPD, 28 patients with COPD using long term oxygen therapy (LTOT) and a reference group (R) of 150 healthy individuals. Before the study, a number of the COPD patients had been tested with regard to spirometry, walking distance and quality of life using the Chronic Respiratory Disease Questionnaire (CRQ). All subjects filled in an eight-item checklist on levels of life satisfaction. RESULTS: Significantly lower levels of satisfaction were reported by both patient groups than the R group for satisfaction with life as a whole and satisfaction derived from vocational/occupational situation, sexual life and ADL, and by the LTOT group, furthermore, also with family life. Only 10% of the patients were satisfied with their health. The LTOT group reported significantly lower levels of satisfaction than the COPD group for life as a whole, satisfaction with their vocational/occupational situation, leisure, ADL situation and their satisfaction with family life and partnership relation. Factor analyses demonstrated different patterns between the R group and the patient group. No correlation was found between satisfaction with life as a whole and lung function parameters whereas three of the CRQ dimensions; emotional function, fatigue and mastery correlateded significicantly with satisfaction with life as a whole and several of the domains. No relationships was found between satisfaction with life as a whole or any of the domains and the CRQ dimension dyspnea. CONCLUSIONS: The low levels of satisfaction with life as a whole, in addition to low levels of satisfaction with several domains, indicate that the majority of the patients had not managed to cope successfully with the consequences of their impairment. More attention must, thus, be given to these patients in the rehabilitation work.     

Heteroskedasticity in the Tobit model

The paper deals with parameter estimation and the testing of individual parameters in heteroskedastic Tobit models. The statistical properties of semiparametric and maximum likelihood estimators are evaluated. Correspondingt-test statistics are compared. Results from a Monte Carlo experiment indicate that the semiparametric estimator performs relatively better than the maximum likelihood estimator. The associatedt-test statistics appear to perform better than the corresponding maximum likelihood test statistics. *** DIRECT SUPPORT *** A06GP002 00008     

Quality of Life Predictors and Normative Data

This study identifies predictors and normative data for quality of life (QOL) in a sample of Portuguese adults from general population. A cross-sectional correlational study was undertaken with two hundred and fifty-five (N = 255) individuals from Portuguese general population (mean age 43 years, range 25–84 years; 148 females, 107 males). Participants completed the European Portuguese version of the World Health Organization Quality of Life short-form instrument and the European Portuguese version of the Center for Epidemiologic Studies Depression Scale. Demographic information was also collected. Portuguese adults reported their QOL as good. The physical, psychological and environmental domains predicted 44 % of the variance of QOL. The strongest predictor was the physical domain and the weakest was social relationships. Age, educational level, socioeconomic status and emotional status were significantly correlated with QOL and explained 25 % of the variance of QOL. The strongest predictor of QOL was emotional status followed by education and age. QOL was significantly different according to: marital status; living place (mainland or islands); type of cohabitants; occupation; health. The sample of adults from general Portuguese population reported high levels of QOL. The life domain that better explained QOL was the physical domain. Among other variables, emotional status best predicted QOL. Further variables influenced overall QOL. These findings inform our understanding on adults from Portuguese general population QOL and can be helpful for researchers and practitioners using this assessment tool to compare their results with normative data.     

Treatment‐as‐usual in effectiveness studies: What is it and does it matter?

Andrée Löfholm C, Brännström L, Olsson M, Hansson K. Treatment‐as‐usual in effectiveness studies: What is it and does it matter? A hallmark of an evidence‐based practice (EBP) is the systematic appraisal of research related to the effectiveness of interventions. This study addressed the issue of interpreting results from effectiveness studies that use treatment‐as‐usual (TAU) as a comparator. Using randomised controlled studies that evaluate the effectiveness of multisystemic therapy as an illustrative example, we show that TAU includes a wide variety of treatment alternatives. Estimated treatment effects on recidivism suggest that TAU seems to contain a greater variation in underlying risk than experimental conditions, supporting the hypothesis that the content of TAU could affect outcomes. Implications for the realisation of an EBP are discussed.     

Romani culture and academic success: arguments against the belief in a contradiction

Roma, today perceived as the most numerous European minority, face marginalisation and exclusion. Education is considered to be one of the focal points for improvement, and numerous studies have analysed and reported on the educational situation of Roma. Several studies have argued that Romani cultural values are not compatible with institutional schooling and that Romani families perceive schools as an alien institution. Other studies have drawn upon cultural–ecological theory (CE theory), developed by Ogbu and colleagues, and argue that the Romani cultural frame of reference is oppositional to academic success and thus suggest that successful Romani students distance themselves from Romani culture. The paper discusses the application of CE theory in the context of the academic discourse about the educational achievement of Romani students. Drawing on interviews with Spanish Romani university students, the paper argues that Romani students themselves challenge the assumption that educational success leads to cultural alienation.