Southern two-lined salamanders in urbanizing watersheds

Forested riparian buffers are an increasingly common method of mitigating the negative effects of impervious surface cover on water quality and wildlife habitat. We sampled larval southern two-lined salamanders (Eurycea cirrigera) in 43 streams, representing the range of impervious surface cover and forested riparian buffer width across Wake County, NC, USA. Larval abundance decreased with increasing impervious surface cover in the upstream catchment, but was not affected by buffer width. This is likely a result of an incomplete buffer system and culverts or other breaches along streams. Larval abundance increased with detritus cover in the stream to a threshold and then decreased as detritus continued to increase. As percent pebble substrate in the stream increased, especially in perennial streams, larval salamander abundance also increased. We suspect salamanders were unable to migrate with the water column during dry periods in intermittent streams with sedimented interstices below the surface, resulting in low abundances. A combination of increased peak flows and sedimentation, reduced base flow, and chemical changes likely reduces the abundance of salamanders in urban and suburban streams. We suggest creation of catchment-wide, unbreached buffers to maintain the integrity of stream habitats in urbanizing watersheds.     

Developing family-based care: complexities in implementing the UN Guidelines for the Alternative Care of Children

In response to immense challenges facing children in out-of-home care in all parts of the world, there is a growing international trend towards the development of family-based placements for children in out-of-home care, away from large-scale institutions. This development of family-based care within a range of care options is recommended within the international Guidelines for the Alternative Care of Children (the Guidelines), which were welcomed unanimously by the United Nations General Assembly in 2009. This paper offers an overview of these guidelines’ key principles, and considers the complexities that arise in efforts towards their implementation. Drawing on the literature, supported by research that informed Moving forward (the implementation handbook on the Guidelines) and illustrated by practice examples from across global regions, the authors examine three fundamental challenges in States’ efforts to implement the Guidelines’ ‘suitability’ principle, namely: de-institutionalising the care system; financing suitable family-based care and supporting the suitability of kinship care. The paper critically reflects on de-institutionalised systems and practices, and the cross-cultural assumptions about suitable foster and kinship care that emerge in efforts towards de-institutionalisation; it aims to spark new thinking on strategic ways in which alternative care is planned and delivered, to impact on future practice.     

Crafting an Architectural Blueprint: Principles of Design for Ethnographic Research

The purpose of this article is to enrich our conceptual understanding of ethnography through principles of design by offering a blueprint for ethnographic ways of knowing. Drawing on published ethnographic research, this article develops and defines principles of design that help facilitate the process and product of ethnographic research. Through the metaphor of an architectural blueprint, we consider the epistemological value of identifying foundational principles supporting ethnographic research and writing. The architectural blueprint offers a foundation for creating, writing, revising, teaching, and evaluating ethnographic scholarship. The article closes with a discussion of the utility of the metaphor as well as how other metaphors that currently guide ethnographic research could be used in tandem with the blueprint metaphor.     

Assessing Multidimensional Approaches to Measure Program Outcomes in Human Service Organizations

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This study explores scholars’ approaches to measure performance in nonprofit human service organizations. While...     

Male street prostitution in Dublin: a psychological analysis

This study assessed the mental health characteristics of 12 male street prostitutes (MSPs) in Dublin, with particular regard to issues of homelessness, substance abuse, depression, suicidal ideation, and self-esteem. Participants completed five psychometric tests, which indicated that all of the participants had above average levels of depression and suicidal ideation and low levels of self-esteem. This study found that candidates likely to become MSPs are young males with a combination of factors, including a background of childhood sexual or physical abuse, leaving school early, running away from home, and a dependence on heroin.     

Bayesian Probabilistic Projections of Life Expectancy for All Countries

We propose a Bayesian hierarchical model for producing probabilistic forecasts of male period life expectancy at birth for all the countries of the world to 2100. Such forecasts would be an input to the production of probabilistic population projections for all countries, which is currently being considered by the United Nations. To evaluate the method, we conducted an out-of-sample cross-validation experiment, fitting the model to the data from 1950–1995 and using the estimated model to forecast for the subsequent 10 years. The 10-year predictions had a mean absolute error of about 1 year, about 40 % less than the current UN methodology. The probabilistic forecasts were calibrated in the sense that, for example, the 80 % prediction intervals contained the truth about 80 % of the time. We illustrate our method with results from Madagascar (a typical country with steadily improving life expectancy), Latvia (a country that has had a mortality crisis), and Japan (a leading country). We also show aggregated results for South Asia, a region with eight countries. Free, publicly available R software packages called bayesLife and bayesDem are available to implement the method.     

The Educational Consequences of Teen Childbearing

A huge literature shows that teen mothers face a variety of detriments across the life course, including truncated educational attainment. To what extent is this association causal? The estimated effects of teen motherhood on schooling vary widely, ranging from no discernible difference to 2.6 fewer years among teen mothers. The magnitude of educational consequences is therefore uncertain, despite voluminous policy and prevention efforts that rest on the assumption of a negative and presumably causal effect. This study adjudicates between two potential sources of inconsistency in the literature—methodological differences or cohort differences—by using a single, high-quality data source: namely, The National Longitudinal Study of Adolescent Health. We replicate analyses across four different statistical strategies: ordinary least squares regression; propensity score matching; and parametric and semiparametric maximum likelihood estimation. Results demonstrate educational consequences of teen childbearing, with estimated effects between 0.7 and 1.9 fewer years of schooling among teen mothers. We select our preferred estimate (0.7), derived from semiparametric maximum likelihood estimation, on the basis of weighing the strengths and limitations of each approach. Based on the range of estimated effects observed in our study, we speculate that variable statistical methods are the likely source of inconsistency in the past. We conclude by discussing implications for future research and policy, and recommend that future studies employ a similar multimethod approach to evaluate findings.     

The exponential multidimensional demographic projection model

This paper presents the multidimensional demographic projection on the basis of an exponential specification, which avoids the problems associated with the widely used specification on the basis of the linear integration hypothesis. It generalizes earlier work by Gill (1986) on Markov models for closed populations to include the case of open populations. A numerical illustration is also provided.     

The Heart in Haart: Quality of Life of Patients Enrolled in the Public Sector Antiretroviral Treatment Programme in the Free State Province of South Africa

This paper reports on the quality of life of patients enrolled in the public sector antiretroviral treatment programme in the Free State province of South Africa. Statistical analysis of cross-sectional data reveals that it is not access to treatment per se that enhances the quality of life of those who have come forward for ART. Rather, it is the health benefits associated with treatment, levels of stigmatisation, quality health care services, and the ability of persons to access support and care, both from within and outside the health care sector, that are independently associated with improvements in and differences in levels of quality of life.