Simulating space-time random fields with nonseparable Gneiting-type covariance functions

Statistics and Computing - Two algorithms are proposed to simulate space-time Gaussian random fields with a covariance function belonging to an extended Gneiting class, the definition of which...     

The FARSEEING real-world fall repository: a large-scale collaborative database to collect and share sensor signals from real-world falls

Background

Real-world fall events objectively measured by body-worn sensors can improve the understanding of fall events in older people. However, these events are rare and hence challenging to capture. Therefore, the FARSEEING (FAll Repository for the design of Smart and sElf-adaptive Environments prolonging Independent livinG) consortium and associated partners started to build up a meta-database of real-world falls.

Results

Between January 2012 and December 2015 more than 300 real-world fall events have been recorded. This is currently the largest collection of real-world fall data recorded with inertial sensors. A signal processing and fall verification procedure has been developed and applied to the data. Since the end of 2015, 208 verified real-world fall events are available for analyses. The fall events have been recorded within several studies, with different methods, and in different populations. All sensor signals include at least accelerometer measurements and 58 % additionally include gyroscope and magnetometer measurements. The collection of data is ongoing and open to further partners contributing with fall signals. The FARSEEING consortium also aims to share the collected real-world falls data with other researchers on request.

Conclusions

The FARSEEING meta-database will help to improve the understanding of falls and enable new approaches in fall risk assessment, fall prevention, and fall detection in both aging and disease.

     

Israeli and Polish Policies toward Returning Residents as a Reflection of Nationhood

This study focuses on Poland and Israel, both commonly classified as ethnic nation-states, and aims to question the expression of ethnic–civic dichotomy in return-migration policies. Policy documents in each country were analysed and complemented by interviews with policymakers and representatives from relevant organizations. Our analysis reveals that, although there are differences in their policies toward returning residents and in the related programmes in both countries, Israeli and Polish policies include both ethnic and civic components. Therefore, our study supports Joppke's (2005) argument that there is no purely civic or ethnic nationalism and there can be no purely civic or ethnic nation. We show that the proportion of ethnic and civic elements may change over time; thus, our findings contribute to the growing literature pointing to the dynamic nature of nationalism.     

Teachers’ Perceptions of Childcare and Preschool Expulsion

Previous research outlines the correlates of childcare expulsion in the USA, yet researchers know little about how these correlates produce expulsion. This in‐depth qualitative analysis of 30 childcare providers’ accounts of expulsion finds a patterned process to expulsion: Teachers search for causes and solutions to challenging behaviours. When interventions fail, overwhelmed teachers shift their focus from ‘struggling’ children to ‘bad families’. Once the explanation of behaviour changes from within to outside of the child, expulsion is imminent. Interventions in teachers’ understandings, not only in children's behaviours, are discussed as a possible way to reduce expulsion.     

Women's entrepreneurship,neoliberalism and economic justice in the postfeminist era: A discourse analysis of policy change in Sweden

Since the early 1990s, there has been investment in women's entrepreneurship policy (WEP) in Sweden, which continued until 2015. During the same period, Sweden assumed neoliberal policies that profoundly changed the position of women within the world of work and business. The goals for WEP changed as a result, from entrepreneurship as a way to create a more equal society, to the goal of unleashing women's entrepreneurial potential so they can contribute to economic growth. To better understand this shift we approach WEP as a neoliberal governmentality which offers women ‘entrepreneurial’ or ‘postfeminist’ subject positions. The analysis is inspired by political theorist Nancy Fraser who theorized the change as the displacement of socioeconomic redistribution in favour of cultural recognition, or identity politics. We use Fraser's concepts in a discourse analysis of Swedish WEP over two decades, identifying two distinct discourses and three discursive displacements. Whilst WEP initially gave precedence to a radical feminist discourse that called for women's collective action, this was replaced by a postfeminist neoliberal discourse that encouraged individual women to assume an entrepreneurial persona, start their own business, compete in the marketplace and contribute to economic growth. The result was the continued subordination of women business owners, but it also obscured or rendered structural problems/solutions, and collective feminist action, irrelevant.     

Multiculturalism and welfare state integration: Swedish model path dependency

The present article offers an account of Swedish integration policies in the post-war period. The theoretical purpose is to assess Christian Joppke’s hypothesis that recent trends of integration policy convergence have rendered the national model approach analytically useless. The analysis shows that Sweden deviates, in some important respects, from the European trend by not formulating demands that link integration achievements to immigrants’ access to fundamental rights. The conclusion is that the Swedish case does not support Joppke’s hypothesis, but rather indicates that path dependency of national models is a valid explanation to ongoing developments. It is argued that the Swedish exception should be understood as an expression of the persistent impact of a policy logic according to which integration requires that all citizens have equal and universal access to certain fundamental rights. The article builds on general comparisons with European policy developments and uses Denmark as a more specific reference point.