Probability density estimation via an infinite Gaussian mixture model: application to statistical process monitoring

Summary.  The primary goal of multivariate statistical process performance monitoring is to identify deviations from normal operation within a manufacturing process. The basis of the monitoring schemes is historical data that have been collected when the process is running under normal operating conditions. These data are then used to establish confidence bounds to detect the onset of process deviations. In contrast with the traditional approaches that are based on the Gaussian assumption, this paper proposes the application of the infinite Gaussian mixture model (GMM) for the calculation of the confidence bounds, thereby relaxing the previous restrictive assumption. The infinite GMM is a special case of Dirichlet process mixtures and is introduced as the limit of the finite GMM, i.e. when the number of mixtures tends to ∞. On the basis of the estimation of the probability density function, via the infinite GMM, the confidence bounds are calculated by using the bootstrap algorithm. The methodology proposed is demonstrated through its application to a simulated continuous chemical process, and a batch semiconductor manufacturing process.     

‘You Make Me Feel like a Woman’: Therapeutic Cultures and the Contagion of Femininity

This article explores the relations between processes of emotionalization in society, therapeutic cultures in the workplace and new forms of emotional subjectivity and self‐presentation. For many commentators, this subjectivity is culturally feminized, drawing as it does on first‐person narratives, confessionals, emotional performances and ‘the personal’ and it is also highly problematic. In particular, the article speculates on the emergence of a somewhat hostile reaction by some prominent critics to these emotional selves, to whom they appear to represent a form of emasculation. Exploring a range of ‘archives’ in different discourse registers, the article suggests that these dismissive responses could be seen to signify growing cultural anxieties about the imagined feminization of the self and the workplace. The article concludes by proposing that while therapeutic cultures are politically ambivalent, the significance of the resources and solace that they offer should not be ignored or trivialized.     

Habitat use in basking Northern water (Nerodia sipedon) and Eastern garter (Thamnophis sirtalis) snakes in urban New Jersey

The habitat use of basking northern water (Nerodia sipedon) and Eastern garter (Thamnophis sirtalis) snakes was examined along the Raritan Canal, an urbanized area of central New Jersey. There were significant differences between the two species with respect to cloud cover, canopy cover, and the distance to the path and the water, but not with respect to percent of the body exposed to the sun, and percent of the snake that was visible. Water snakes were more likely to bask on bushes, branches and logs than were garter snakes. Garter snakes basked when both the air and water temperature were lower than did water snakes. The lack of basking sites in the water suggests that those along shore are important, including the low hanging branches used by the watersnakes.     

Children's Self-esteem and Moral Self: Links to Parent–Child Conversations Regarding Emotion

The current study has two aims: (1) to examine associations between the emotional content of parent–child past event conversations and two aspects of children's self‐concept—moral self and self‐esteem; and (2) to examine the degree to which talk about past events is uniquely associated with self‐concept when compared with talk about ongoing events and situations. Fifty‐one five‐ and six‐year‐old New Zealand children and their parents discussed four emotional past events and two ongoing conflicts. Children's moral self, self‐esteem and language ability were also assessed. When parents referred to a greater number of positive emotions and evaluations, regardless of conversation type, their children had higher self‐esteem. Past event talk also uniquely predicted children's self‐esteem: Parents who used more explanations during conversations regarding past negative emotions, and more explanations and confirmations of past positive emotions, had children with higher self‐esteem. We discuss these results with respect to an autobiographical memory approach to self‐concept development.     

Incongruent migration categorisations and competing citizenship claims: ‘return’ and hypermigration in transnational migration circuits

ABSTRACT

Recent scholarly interventions propose that the principle of jus nexi (effective connections) or jus domicile (domicile) should replace birthright or birthplace considerations when assigning citizenship status and political membership. Nonetheless, both views privilege notions of territorial presence and the ideal of political community. This paper focuses on Mainland Chinese return migration from Canada to metropolitan cities in China. The dual citizenship restriction enforced by China means those that naturalised in Canada have relinquished their right to Chinese citizenship. Should they be considered returnees, immigrants or transnational sojourners in their ancestral homeland? It is this incongruence in migration categorisations compared to migrant life-worlds that this paper aims to examine. The paper also highlights the interface of competing claims to citizenship in the context of Chinese internal migration and new (African) immigration in China, as well as the returnees’ own transnational migration across the lifecourse. It argues that the ordering mechanisms that characterise normative conceptions of citizenship focus on isolated types of migration trends whereas what confronts us more urgently are intersecting migration configurations that underline the incongruence of migration categorisations and the complexity of competing citizenship claims spatially and temporally.     

Temporalities,materialities and connecting locales: migration and mobility in Asia-Pacific cities

ABSTRACT

In this introduction, we argue that paying attention to the heterogeneous and multi-directional characteristics of mobilities in the Asia-Pacific can generate new conceptual and empirical insights for research on migration and mobility, transnationalism, and intercultural encounters. We note that temporality and materiality are productive lenses for connecting research across diverse urban locales, and to understand the changes these locales experience as a result of emerging forms of mobility. We also draw out three key themes that emerge from the analyses presented by papers in this special issue, and which link the papers as a collection. First, the collection challenges conventional ways in which migrant and non-migrant subjects are classified and researched, by working within the conceptual space opened up by arguments against ‘migrant exceptionalism’, on the one hand, claims for the centrality of the ‘figure of the migrant’ on the other. Second, the papers implicitly or explicitly unpack the temporal, spatial and material consequences of migration and mobility in terms of how aspirations manifest materially and through affective encounters. Third, the collection as a whole signals the analytic power of connecting seemingly distinct sites and scales in and through which migration and mobility take place.     

Planned telephone support for disadvantaged parents in North Wales: perceptions of service users

This paper draws on the findings of a qualitative evaluation to examine user perceptions of a planned telephone support intervention based in a disadvantaged area in North Wales. Telephone support services are tailored differentially to offer information, advice and/or counselling on a crisis‐led or planned‐intervention basis. Research focusing on telephone support, for the most part (and particularly in the UK) has examined crisis‐led as opposed to planned support services. The findings of our study resonate with earlier research findings about telephone support that suggest provision of non‐visual support in social care can overcome some practical and financial difficulties for users with little discernible loss to their experience of satisfaction with the service. In addition, the paper suggests that planned support may provide a valuable service to users who are most disadvantaged and marginalized and who have found traditional forms of support unsatisfactory. For such users, planned telephone support can offer one‐to‐one communication tailored to specific client needs. Moreover, it can enable the development of user trust in the service which empowers users to operationalize strategies in the context of a reliable, sustained, unthreatening (and thus minimal risk) relationship.     

FEMALE CAREGIVERS’ REFLECTIONS ON ETHICAL DECISION-MAKING: THE INTERSECTION OF DOMESTIC VIOLENCE AND ELDER CARE

As our population ages, increasing numbers of social workers and other therapists will provide counseling to women who are caregivers of frail elders. These female caregivers often face complex ethical dilemmas in caring for a frail elder. Furthermore, these dilemmas are compounded by domestic violence in the caregiver/frail elder relationship initiated before the onset of caregiving. Illustrated with case examples, this article presents an ethical decision-making model based on an empowerment framework for helping practitioners work with caregivers who face difficult dilemmas impacted by domestic violence. Implications for strengthening clinical practice with these caregivers are discussed.     

Women in Business-owning Families: a Comparison of Roles,Responsibilities and Predictors of Family Functionality

The purpose of this study is to compare groups of women associated with family businesses and ascertain predictors of functionality. The sample consisted of 589 women divided into five groups based on their roles in the business. Of interest were various combinations of work at home, in the family business, and outside the business and how multiple roles affect the family. The women varied on several characteristics with female business managers less likely to be married than other women and generally operating smaller businesses. The women were not significantly different on levels of family functioning. Family goal success, satisfaction with business role, and being married were positive significant predictors of family functionality. Higher levels of household tension were negatively associated with family functionality. Family therapists and family business consultants must be cognizant of the multiple role responsibilities of women associated with a family firm.