Identifying Dispersion Effects in Robust Design Experiments—Issues and Improvements

The two experimental methods most commonly used for reducing the effect of noise factors on a response of interest Y aim either to estimate a model of the variability (V(Y), or an associated function), that is transmitted by the noise factors, or to estimate a model of the ratio between the response (Y) and all the control and noise factors involved therein. Both methods aim to determine which control factor conditions minimise the noise factors' effect on the response of interest, and a series of analytical guidelines are established to reach this end. Product array designs allow robustness problems to be solved in both ways, but require a large number of experiments. Thus, practitioners tend to choose more economical designs that only allow them to model the surface response for Y. The general assumption is that both methods would lead to similar conclusions. In this article we present a case that utilises a design based on a product design and for which the conclusions yielded by the two analytical methods are quite different. This example casts doubt on the guidelines that experimental practice follows when using either of the two methods. Based on this example, we show the causes behind these discrepancies and we propose a number of guidelines to help researchers in the design and interpretation of robustness problems when using either of the two methods.     

The Immigrant Paradox in Pregnancy: Explaining the First‐Generation Advantage for Latina Adolescents

The immigrant paradox is a population health pattern whereby later generation immigrant youth display less favorable outcomes when compared to first‐generation co‐ethnic peers. This study examines the role of number of sex partners in explaining the immigrant paradox in pregnancy among Latina adolescents. This secondary analysis utilized a nationally representative sample of Latinas in the National Longitudinal Study of Adolescent Health. As expected, first‐generation Latina adolescents demonstrated less risk than second‐ or third+ generation Latinas for becoming pregnant. Further, the lower number of sexual partners fully accounted for the first generation's advantage in lower rate of adolescent pregnancy. These findings have important implications for healthcare providers who work with Latina girls in pregnancy prevention.     

Pan-European groupings: A case study in paint manufacture

This complete Case Study, including Teaching Notes, won the 1991 EFMD Case Writing Competition Prize on a European theme, as well as receiving much praise from the judges. The Case concerns a group of four different European paint manufacturers co-operating in an EC Economic Interest Grouping to improve their economic position in European markets. The co-ordination of raw material purchasing policies was the first area of joint action; they obtained significant discounts straight away. Then they could begin to think about competing together against the big paint multinationals established in Europe. Later, talks started on joint investment and technology transfer.Lluis Renart and Francesco Parés have written a stimulating Case Study with Teaching Notes of value to business students and managers wishing to test out their analytical abilities.     

Solutions to Faculty Work Overload: A Study of Job Sharing

This study investigated the opinions of a national sample of counselor education chairs and college of education deans regarding the advantages and disadvantages of faculty job sharing. Results showed favorable responses toward faculty job sharing from approximately half the sample, despite limited experience with job sharing. The study found few differences in perspectives between deans and counselor education chairs.     

Different Factors for Different Causes: Analysis of the Spatial Aggregations of Fire Ignitions in Catalonia (Spain)

The present study analyzes the effects of different socioeconomic factors on the frequency of fire ignition occurrence, according to different original causes. The data include a set of documented ignition points in the region of Catalonia for the period 1995–2008. The analysis focused on the spatial aggregation patterns of the ignitions for each specific ignition cause. The point‐based data on ignitions were interpolated into municipality‐level information using kernel methods as the basis for defining five ignition density levels. Afterwards, the combination of socioeconomic factors influencing the ignition density levels of the municipalities was analyzed for each documented cause of ignition using a principal component analysis. The obtained results confirmed the idea that both the spatial aggregation patterns of fire ignitions and the factors defining their occurrence were specific for each of the causes of ignition. Intentional fires and those of unknown origin were found to have similar spatial aggregation patterns, and the presence of high ignition density areas was related to high population and high unemployment rates. Additionally, it was found that fires originated from forest work, agricultural activities, pasture burning, and lightning had a very specific behavior on their own, differing from the similarities found on the spatial aggregation of ignitions originated from smokers, electric lines, machinery, campfires, and those of intentional or unknown origin.     

The Dynamics of Age and Sex in the Development of Mother–Infant Vocal Communication Between 3 and 11 Months

We followed the nondistressed vocalization dynamics of 30 mother–infant dyads observed in a naturalistic setting using multiple time points between 3 and 11 months to identify subtle relationships between age, sex and maternal behavior ending by 1 year of age with diverging trajectories of nondistressed vocalization. We observed no mean differences between boys and girls in frequency or duration of nondistressed vocalizations at any one time period. However, while these parameters were essentially static for boys, girls showed a quadratic developmental curve, declining in frequency and duration between 6 and 8 months and climbing above their early starting point by 9–11 months. Mothers of boys showed a linear decrease in the duration of their speech over the 9 months of our study. In contrast, mothers of girls showed quadratic patterns of ultimately increasing vocalization frequency and duration, over the months 3–11 of development. Finally, boys' and girls' vocalization contingent to maternal speech revealed no differences. Mothers of boys, however, did not change significantly over time, while mothers of girls showed an increase in contingent responsiveness from 3–5 months to 9–11 months and from 6–8 months to 9–11 months. A similar pattern was followed for object‐related maternal vocal responses.     

Measurement of Social Participation and its Place in Social Capital Theory

The concept of social capital has become very popular but its definition and measurement are still rather unclear. We frame our study in one of its components, social participation. In this article we develop an optimal measure for social participation based on the questions asked in the first round of the European Social Survey. Our analyses suggest that a distinction has to be made between informal and formal participation because they relate very differently to other variables such as age, education, political action and happiness. We also found that these two types of participation had hardly any relationship with other important components of the social capital construct, such as social trust and political trust. The latter result does not devalue the validity of the developed indices for informal and formal participation but suggests that participation and trust should be considered formative indicators of social capital.     

Education for a sustainable future? Students’ experiences of workshops on ethical dilemmas

ABSTRACT

The goal of education for sustainable development (ESD) is to promote the values, behaviors, and lifestyles that are needed to find solutions to global economic, social, and environmental challenges. Social work and social work education have an important role to play in ESD, and poverty reduction, health, and well-being are important issues for social work as well. UNESCO, as well as the provisions of the Sweden’s Higher Education Ordinance, emphasizes the importance of higher education in meeting the future challenges to creating a sustainable society. Social work education at Örebro University has a long tradition of collaboration with service user organizations, for example by holding workshops on ethical dilemmas. This article describes these workshops and explores the students’ experiences of them. Four themes were identified: the perspective of ‘the other’ (and my own role), the importance of a nonjudgmental approach, the complexity of ethical dilemmas, and awareness of the complexity of social work. The workshops give the students a platform where they can gain practical knowledge and experience. Through the workshops, the students began to reflect on their own inner ethical compass, as well as on their own role and the challenging nature of social work.     

Considerations for the provision of prosthetic services in post-disaster contexts: the Haiti Amputee Coalition

Following the 2010 earthquake, Hôpital Albert Schweitzer and Hanger Prosthetics founded a prosthetics shop in rural Haiti. This research explored barriers to clients’ continued use of their limb, with the goal of improving programming and thus increasing rates of success. Methods used included ethnographic observation, semi-structured interviews and focus groups. The participants included retrospective and prospective prosthetic users as well as in-house clients. Data were collected from over 100 individuals. Despite gratitude for the services, many clients reported they did not utilize their limbs on a daily basis and provided insightful critiques to the programme and suggestions for improvement. Lack of clear communication with the clients was a major problem in the programme. Clients expressed gratitude for the sense of community within the programme but noted the lack of outreach after discharge. Other important concerns were programme sustainability and the provision of more holistic care for individuals with disabilities.     

Sense of Community and the Perception of the Socio-Physical Environment: A Comparison Between Urban Centers of Different Sizes Across Europe

Measures of subjective well-being, and especially life evaluations, or judgments about how happy people are with their lives as a whole, enrich and empower social indicators research. They do this by requiring other social indicators as explanatory variables and providing a coherent encompassing framework within which the relative importance of other social indicators can be established.