More on local influence in pllincipal components analysis

Local influence on the eigenvalues of sample covariance matrices in

principal components analysis is examined for a reasonable modification of Shi's (1997) perturbation scheme, The modification is suggested for samples from populations with both unknown mean vector and covariance matrix. While Shi's detection indexes (1997) consist of only quadratic terms, the modified perturbation scheme leads to detection indexes constituted by both linear and quadratic terms associated with centralized observations. These linear and quadratic terms reflect local influences on the first two sample moments. Examples are investigated based on the two detection indexes.     

Family Structure and Child Well‐being: Integrating Family Complexity

Although children's family lives are diverse, the measurement of children's living arrangements has lagged, focusing on the relationships of children to parents while largely ignoring sibling composition. Using data from the 2008 Survey of Income and Program Participation (N = 23,985) the authors documented patterns of family complexity among a nationally representative sample of children ages 0–17 living in a range of family structures. They also examined the independent and joint associations of family structure and family complexity on child economic well‐being. Family complexity was independently related to economic disadvantage, namely, a lower income‐to‐needs ratio and a higher likelihood of public assistance receipt. The role of family complexity was partially contingent on family structure, with the positive association between family complexity and receipt of public assistance more pronounced for children in families with 2 married biological parents. This study demonstrates the utility of integrating family structure and family complexity in studies of children's well‐being.     

Enabling,structuring and creating elite transnational lifestyles: intermediaries of the super-rich and the elite mobilities industry

ABSTRACT

This article considers how the migration industries lens can be usefully employed in understanding how professional intermediaries enable, structure, and create transnational migration lifestyles of the super-rich. In particular, we examine how intermediaries and their services (1) enable the continued sustenance of transnational migration lifestyles for this group of elites; and (2) structure and create elite transnational lifestyles. This article primarily draws on interviews with professional intermediaries who service the super-rich, and content analysis of their websites and brochures. Inspired by insights from the new mobilities paradigm (and in particular the politics of mobility), we argue for an expanded conceptualisation of the migration industries beyond the literature’s current focus on labour recruitment and migration management. Specifically, we suggest thinking of the migration industries as a collection of actors and services that enable, structure, and create different types of ‘migrants’, their spaces and their highly uneven transnational mobilities – including that of the super-rich and their elite transnational lifestyles. We conclude with suggestions for a research agenda that may help to better understand the role of intermediaries in the creation of differentiated mobilities.     

A paradise for LGBT rights? The paradox of Belgium

How is it that a small country such as Belgium, with its reputation of relative conservatism, has jumped to the forefront of LGBT-friendly nations when it comes to the extension of rights to, and implementation of government policies for, its LGBT population? The analysis offered here focuses on a combination of six causes: the impact of wider secularization processes; the political history and culture of the country; the organization of especially the Flemish LGBT movement and reasons for its political effectiveness; mainstream social trends in national scapegoating hierarchies; the overall media environment; and the window of opportunity opened by the political landslide of 1999.     

Erratum: Amplification in Service Supply Chains: An Exploratory Case Study from the Telecom Industry

This erratum contains the appendix that was omitted from the original paper by H. Akkermans and B. Vos, “Amplification in service supply chains: an exploratory study from the telecom industry”, Production and Operations Management, 12, 2, 204–223.     

Expanding social health protection in Cambodia: An assessment of the current coverage potential and gaps,and social equity considerations

The Royal Government of Cambodia recently launched its National Social Protection Policy framework to strengthen and expand social security and assistance. To inform social health protection policy, we examine socio-economic survey data and administrative coverage data to assess the coverage potential of existing coverage mechanisms and current gaps; and compare equitable contribution rates. Over 53 per cent of the population currently has no social health protection coverage mechanism, and about 16 per cent of the population who do have access to a mechanism are not yet enrolled. Current expansion efforts focus on the formal employee scheme, primarily benefiting individuals from higher income households. In addition, recent coverage expansion to some informal workers leaves significant gaps, particularly among the informal sector. We find out-of-pocket health care expenditure to be an excessive share of income among lower wealth quintile individuals and conclude they are financially vulnerable. Finally, we illustrate that an equitable approach to individual, monthly health care contributions among the lower three quintiles has a severely limited potential for revenue generation, and collection costs could exceed the amount collected. Therefore, we recommend that vulnerable groups should be exempted from contribution payments as social health protection is expanded.     

Public support for the social rights and social obligations of the unemployed: Two sides of the same coin?

In light of the ever‐growing shift towards activation in European welfare states, the present article examines the relationship between citizens’ welfare generosity (i.e., support for social rights) and welfare conditionality (i.e., support for social obligations) with regard to the unemployed. Using data from the 2014 Belgian National Elections Study, we found that generosity and conditionality appear to be two sides of the same coin. The two factors are negatively correlated, and most of their respective attitudinal drivers are quite similar in strength, yet opposite in direction. In addition to self‐interest and conventionally recognised ideational beliefs, such as egalitarianism and individualism, beliefs about welfare deservingness – an explanatory factor that has remained understudied in the field – are particularly influential in shaping people’s welfare preferences. A stronger emphasis on criteria of deservingness such as control, attitude and reciprocity considerably lowers support for social rights and strengthens support for social duties.     

Anarchy,groups, and conflict: an experiment on the emergence of protective associations

In this article, we investigate the implications of the philosophical considerations presented in Nozick’s Anarchy, State, and Utopia, by examining group formation in a laboratory setting where subjects engage in both cooperative and conflictual interactions. We endow participants with a commodity used to generate earnings, plunder others, or protect against plunder. In our primary treatment, we allow participants to form groups to pool their resources. We conduct a baseline comparison treatment that does not allow group formation. We find that allowing subjects to organize themselves into groups does not lead to more cooperation and may in fact exacerbate tendencies towards conflict.     

Automatic sleep stage classification based on easy to register signals as a validation tool for ergonomic steering in smart bedding systems

Ergonomic sleep studies benefit from long-term monitoring in the home environment to cope with daily variations and habituation effects. Polysomnography allows to asses sleep accurately, but is costly, time-consuming and possibly disturbing for the sleeper. Actigraphy is cheap and user friendly, but for many studies lacks accuracy and detailed information. This proof-of-concept study investigates Least-Squares Support Vector Machines as a tool for automatic sleep stage classification (Wake-N1-Rem to N2-N3 separation), using automatic trainingset-specific filtered features as derived from three easy to register signals, namely heart rate, breathing rate and movement. The algorithms are trained and validated using 20 nights out of a 600 night database from over 100 different healthy persons. Different training and test set strategies were analyzed leading to different results. The more person-specific the training nights to the test nights, the better the classification accuracy as validated against the hypnograms scored by experts from the full polysomnograms. In the limit of complete person-specific training, the accuracy of the algorithm on the test set reached 94%. This means that this algorithm could serve its use in long-term monitoring sleep studies in the home environment, especially when prior person-specific polysomnographic training is performed.     

How Are Parental Psychological Control and Autonomy‐Support Related? A Cluster‐Analytic Approach

This study addresses the hypothesis that the relationship between parental psychological control and autonomy‐support depends on how autonomy‐support is conceptualized, that is, in terms of promotion of independence or in terms of promotion of volitional functioning. Questionnaires tapping into psychological control and these two types of autonomy‐support were administered to a sample of 495 emerging adults. Cluster analysis revealed that, whereas parental promotion of independence may or may not co‐occur with psychological control, high parental promotion of volitional functioning systematically goes together with low psychological control and vice versa. Differences between clusters in terms of adjustment were mainly driven by differences in psychological control and promotion of volitional functioning and to a lesser extent by differences in promotion of independence.