Optimal Monte Carlo integration on closed manifolds

Statistics and Computing - The worst case integration error in reproducing kernel Hilbert spaces of standard Monte Carlo methods with n random points decays as $$n^{-1/2}$$. However, the...     

Stakeholder identities in Britain's neoliberal ethical community: Polish narratives of earned citizenship in the context of the UK's EU referendum

This article examines the narrative strategies through which Polish migrants in the UK challenge the formal rights of political membership and attempt to redefine the boundaries of ‘citizenship’ along notions of deservedness. The analysed qualitative data originate from an online survey conducted in the months before the 2016 EU referendum, and the narratives emerge from the open‐text answers to two survey questions concerning attitudes towards the referendum and the exclusion of resident EU nationals from the electoral process. The analysis identifies and describes three narrative strategies in reaction to the public discourses surrounding the EU referendum – namely discursive complicity, intergroup hostility and defensive assertiveness – which attempt to redefine the conditions of membership in Britain's ‘ethical community’ in respect to welfare practices. Examining these processes simultaneously ‘from below’ and ‘from outside’ the national political community, the paper argues, can reveal more of the transformation taking place in conceptions of citizenship at the sociological level, and the article aims to identify the contours of a ‘neoliberal communitarian citizenship’ as internalized by mobile EU citizens.     

Insecure Attachment Predicts History of Divorce,Marriage, and Current Relationship Status

The goal of this research was to test the predictive ability of attachment styles and dysfunctional relational communication patterns to predict adults’ relationship status (i.e., single/partnered and ever-married/ever-divorced). Anxious and avoidant attachment styles and dysfunctional relational communication patterns (i.e., criticism, defensiveness, contempt, stonewalling) were predictors of relationship status in 413 adults who participated in an online survey. The results indicated that anxious and avoidant attachment styles significantly predicted both history of divorce and single versus partnered relationship status. The dysfunctional communication patterns did not explain a great deal of variance in relationship history and status above and beyond insecure attachment, although dysfunctional communication was significantly and consistently associated with insecure attachment. These results indicate that some of the individual characteristics that generate a risk for divorce might also pose a barrier to repartnering after a divorce.     

Maternal education influences Australian infants’ language experience from six months

Disparities in children's early language skills associated with socioeconomic factors have led to many studies examining children's early language environments, but few as yet in the first year of life. This longitudinal study assessed the home language environments of 50 Australian infants, who varied in maternal education (university education, or not). Full‐day audio recordings were collected and analyzed using the LENA system when infants were aged 6–9 months and 12–15 months. Using the device‐specific analysis software, we assessed 12‐h projected counts of (1) adult speech input, (2) conversational interactions, and (3) child vocalizations. At both ages, higher maternal education was associated with higher counts of adult words and conversational turns, but not child vocalizations. The study adds to the literature by demonstrating disparities in the infants’ language experience within the first year of life, related to mothers’ education, with implications for early intervention and parenting supports.     

Depleted suburban house sparrow <Emphasis Type="Italic">Passer domesticus</Emphasis> population not limited by food availability

Little is known about the environmental factors that limit the demography and abundance of wild vertebrates in highly modified urban environments. The House Sparrow Passer domesticus is a globally widespread species whose urban populations have recently undergone substantial declines particularly in Europe. The environmental drivers of these declines remain unknown. In a previous study we showed that invertebrate availability during the breeding season limited reproductive success but not population size in a suburban sparrow population. In this study we test experimentally whether year-round food availability limits demography and population size. Supplementary feeding involved the provision of invertebrate prey (during the breeding season) plus unlimited high-energy seed (year-round) at 33 sparrow colonies spread across suburban London over two successive calendar years. Thirty-three unfed colonies served as controls. Supplementary feeding increased fledgling abundance, but had no impact on overwinter survival or population size. We conclude that this depleted suburban sparrow population is not limited by food availability, and conservation efforts based primarily on food provision are unlikely to succeed. We also tested whether cross-colony variation in sparrow abundance was correlated with a set of potential environmental stressors including measures of predator abundance and pollution. Sparrows were more abundant, or showed more positive temporal changes in abundance, at localities containing large areas of seed-rich habitat and low levels of nitrogen dioxide air pollution. Further research is merited into the potential impacts of air pollution on the fitness of urban birds.     

Exploring the Urban–Rural Incarceration Divide: Drivers of Local Jail Incarceration Rates in the United States

ABSTRACT

A large body of research has focused on understanding mass incarceration in the United States through the lens of federal and state prison growth. However, local jail systems, with 11 million admissions each year, have received less research attention despite their broad impact on communities. Preliminary analysis conducted by the Vera Institute of Justice (Vera) uncovered geographical disparities in county jail incarceration rates. Contrary to assumptions that incarceration is an urban phenomenon, Vera discovered that, in recent decades, pretrial jail rates have declined or remained flat in many urban areas, whereas rates have grown in rural counties. In an effort to uncover factors contributing to continued jail growth in rural areas, Vera joined forces with Two Sigma’s Data Clinic, a volunteer-based program that leverages Two Sigma employees’ data science expertise. Determinants of local jail rates from 2000–2013 were examined using a generalized estimating equations (GEE) model to account for correlations within counties over time. Results revealed that county-level poverty, police expenditures, and spillover effects from other county and state authorities are significant predictors of local jail rates. Investigation of model residuals revealed clusters of counties where observed rates were much higher than expected conditioned upon county variables.     

The Ombudsman Institution in Small States: The Case of Cyprus

Many small state constitutions provide for the establishment of an ombudsman. In the Cyprus case, the original constitution-makers were preoccupied with other things, and many years were to elapse before provision was made for the appointment of an ombudsman. While the office now plays an important part in the governance of the island, its provision needs to be viewed as part of this small state's preparation to become part of the European Union rather than as an accommodation to small state orthodoxy.     

Child Abuse and Sudden Infant Death

In times past, parents were usually blamed when an infant died suddenly and unexpectedly. A more caring attitude evolved with the adoption of the term ‘cot death’ or ‘sudden infant death syndrome’ (SIDS). Recent research looking at the factors responsible for SIDS has focused on aspects of child care and parental behaviour. Epidemiological studies confirm that several risk factors associated with child maltreatment are also to be found in many families who experience a sudden infant death. Social deprivation and other well-known associated features linked to maltreatment are correlated with sudden death in infancy. It is suggested that both physical abuse (suffocation is the most usual mechanism proposed) and neglect (failure to thrive, failure to recognize and treat illness) are important mechanisms. Infanticide (filicide) has existed widely over past centuries and its continuation in modern times is reflected in the highest murder rates of all age groups in infancy. However, much fatal abuse and neglect remains hidden, as demonstrated from the results of detailed fatality reviews. The evidence linking child abuse and neglect with sudden unexpected death in infancy is reviewed.