Determining urban exploiter status of a termite using genetic analysis

Urban ecosystems are characterized by “urban exploiters”: species that thrive in the modified environment of cities. Few insects have been categorized as such, in part because they are usually considered as pests first, in part because many studies do not identify to species, and in part because many insects can survive in small vegetated areas within the urban matrix. Some termites may be prime examples of urban exploiters; Coptotermes species are rare in natural forests, but are abundant and major pests in urban areas. We investigated the genetic structure of the South East Asian species Coptotermes gestroi in the urban nation of Singapore. There was a panmictic population across the city, yet all 29 colonies were genetically distinct, and many had expanded from recent bottlenecks. There were no significant differences between colonies in vegetated areas (forests and parks), and those in urban habitats. The genetic pattern is similar to some other urban exploiter species in comparable environments, thus confirming C. gestroi is a native species that has become an urban exploiter, the first termite to be considered as such.     

The Socioeconomic Incorporation of Immigrant and Native‐born Day Labourers in Tshwane,South Africa

It has been widely documented that unauthorized immigrants experience adverse economic incorporation in destination countries, particularly in the global North. Faced with restricted employment opportunities, many are drawn into informalizing segments of the labour market where earnings are low and unstable. Much less is known about how immigrant workers fare in the informal economy of cities of the South. Using surveys conducted in 2004, 2007 and 2015, we examine the economic outcomes of immigrant and native‐born workers who participate in the day labour markets of Tshwane, South Africa. In 2004 there were signs that foreign‐born workers enjoyed modestly better outcomes than South Africa‐born workers. In the latter periods, however, these advantages have disappeared and there are indications of a downward convergence of employment outcomes. The article concludes with a call for creating worker centres to regulate informal job markets for the benefit of workers, regardless of immigration status.     

Mental health professionals in children's advocacy centers: is there role conflict?

Two recent chapters in professional books have criticized children's advocacy centers for creating role conflict for mental health professionals because of their work with criminal justice and child protection professionals in children's advocacy centers as part of a coordinated response to child abuse. This article argues that these critiques misunderstand children's advocacy center practice and overestimate the risk of role conflict. Children's advocacy center standards set a boundary between forensic interviewing and therapy, which in most children's advocacy centers are done by separate professionals and never by the same professional for a given child. Many mental health professionals serve children's advocacy centers as consultants with no treatment role. Children's advocacy center therapists are rarely involved in investigation, and their participation in multidisciplinary teams focuses on children's interests and well-being.     

A methodology for identifying married couples in medicare data: Mortality, morbidity, and health care use among the married elderly

Wedescribe a method for the development of cohorts of up to three quarters of the 14 million married couples aged 65 and over in the United States. The health care experiences, illness histories, and mortality of these identified couples can be assessed longitudinally using Medicare data. We summarize strengths and limitations of using data from Medicare administrative records for the study of marriage, health, and aging. We illustrate the method by demonstrating substantial differences in survival in a cohort of hospice patients as a function of not only the patient's own diagnosis and illness burden but also the patient's spouse's illness burden.     

Recovering event histories by cubic spline interpolation

If event history data are recorded in discrete intervals of time, errors are introduced when the data are converted from the unit in which they were recorded, such as date, to another unit such as age or duration. The problem is illustrated by the inconsistent age at marriage schedules published by two recent U.S. censuses. This paper develops a general method for treating problems of this type using cubic spline interpolation. The method is used to adjust U.S. age at marriage schedules, explaining a substantial part of the discrepancy in the 1960 and 1970 censuses.     

Correlation neglect and case-based decisions

Journal of Risk and Uncertainty - In most theories of choice under uncertainty, decision-makers are assumed to evaluate acts in terms of subjective values attributed to consequences and...