1,721,154 research outputs found
Impacts of heat exposure in utero on long-term health and social outcomes: A systematic review
No full textBackgroundClimate change, particularly global warming, is amongst the greatest threats to human health. While short-term effects of heat exposure in pregnancy, such as preterm birth, are well documented, long-term effects have received less attention. This review aims to systematically assess evidence on the long-term impacts on the foetus of heat exposure in utero.MethodsA search was conducted in August 2019 and updated in April 2023 in MEDLINE(PubMed). We included studies on the relationship of environmental heat exposure during pregnancy and any long-term outcomes. Risk of bias was assessed using tools developed by the Joanna-Briggs Institute, and the evidence was appraised using the GRADE approach. Synthesis without Meta-Analysis (SWiM) guidelines were used.ResultsEighteen thousand six hundred twenty one records were screened, with 29 studies included across six outcome groups. Studies were mostly conducted in high-income countries (n = 16/25), in cooler climates. All studies were observational, with 17 cohort, 5 case-control and 8 cross-sectional studies. The timeline of the data is from 1913 to 2019, and individuals ranged in age from neonates to adults, and the elderly. Increasing heat exposure during pregnancy was associated with decreased earnings and lower educational attainment (n = 4/6), as well as worsened cardiovascular (n = 3/6), respiratory (n = 3/3), psychiatric (n = 7/12) and anthropometric (n = 2/2) outcomes, possibly culminating in increased overall mortality (n = 2/3). The effect on female infants was greater than on males in 8 of 9 studies differentiating by sex. The quality of evidence was low in respiratory and longevity outcome groups to very low in all others.ConclusionsIncreasing heat exposure was associated with a multitude of detrimental outcomes across diverse body systems. The biological pathways involved are yet to be elucidated, but could include epigenetic and developmental perturbations, through interactions with the placenta and inflammation. This highlights the need for further research into the long-term effects of heat exposure, biological pathways, and possible adaptation strategies in studies, particularly in neglected regions. Heat exposure in-utero has the potential to compound existing health and social inequalities. Poor study design of the included studies constrains the conclusions of this review, with heterogenous exposure measures and outcomes rendering comparisons across contexts/studies difficult
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
How to ensure access to adequate HIV and sexual and reproductive health services for female sex workers? : lessons learned from a ‘diagonal’ service delivery model tested in Africa and India
No full textDispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Characteristics, sexual behaviour and access to health care services for sex workers in South Africa and Kenya
No full textSex workers in Sub-Saharan Africa are vulnerable to a range of factors that dispose them to poor health outcomes. In particular, they are at high risk of violence, injury, rape, discrimination and a spectrum of human rights abuses. Their vulnerability to HIV and other STIs are many fold greater than the non-sex worker population of the same age. Health care systems world-wide, and particularly in Africa, are not adequately responsive to the needs of sex workers. As a result, many sex workers do not receive adequate health services, education or HIV prevention tools. While the literature on female sex work in Africa is fairly robust, troubling research gaps are evident on male and transgender sex work, as well as on the intersections of migration and sex work.
Mega-sport events have been associated with increased anxiety about sex work and human trafficking, with few studies tracking the impact of such events on local sex work industries over time. These fears were prominent during the 2010 FIFA Soccer World Cup.
This PhD project consisted of three research projects based in South Africa and Kenya. It aimed to evaluate the impact of social and behavioural factors on the health of sex workers. To achieve this objective, it examined the effects of sex worker characteristics, migration status, and their relationships with commercial and non-commercial partners on sexual behaviour and access to services. Such information may assist in designing more effective health policies in addition to providing insights into the structural factors that affect sex work settings and heighten sex worker vulnerability to ill-health.
The first research project consisted of face-to-face surveys with 1799 male, female and transgender sex workers in Johannesburg, Rustenburg and Cape Town. The second research project involved telephonic interviews in three waves with 663 female sex workers who advertised online or in newspapers in South Africa. The third component was a prospective cohort of 400 female sex workers in Mombasa, Kenya.
The research findings indicate the diversity of the sex industry and the people who work in it. Sex work is an important livelihood strategy that provides an income for sex workers and their extended network of dependents. Migration is a vital component for exploring and understanding how many sex worker lives and work are structured in South Africa. Sex workers are subject to violence from their non-commercial partners as well as from police, while unprotected sex with non-commercial partners emerges as an important risk factor for HIV.
The PhD research detected little significant changes in the sex industry due to the 2010 Soccer World Cup, and documents how strategic opportunities were lost to alter some of the structural conditions of sex work during a time of heightened sex work awareness, funding and scrutiny.
Moreover, this thesis highlights the shortcomings of health care services in responding to the needs of sex workers. It recommends the rolling-out of specialised, sex work-specific health care services in areas of sex work concentration, and sex work-friendly services in mainstream health care facilities in areas of lower sex work concentration. Non-judgemental and empathetic health workers are a key component of responsive services. Lastly and perhaps most importantly, it underscores the importance of decriminalising sex work in order to safeguard sex worker rights and to protect individual and public health
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