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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Reconceptualizing Measures of Black–White Disparity in Infant Mortality in U.S. Counties
No full textThe magnitude of Black–White differences in infant mortality rates varies considerably across U.S. counties. Many prior studies of racial disparities in infant mortality rely on rate ratios (RRs) and rate differences (RDs) to measure relative and absolute inequalities in the risk of infant mortality between Black and White infants. In this paper, I draw on linked birth and death records from 2004 to 2013 to systematically evaluate RRs and RDs as tools for assessing variation in Black–White disparities in infant mortality across U.S. counties. I present evidence that both metrics have limitations in identifying counties that can serve as a model for, or target of, institutional interventions. For example, rather than reflecting an advantaged position for Black infants, counties with the lowest RRs tend to be places with high White infant mortality rates. I then introduce a new approach to measuring relative and absolute inequalities in infant mortality and evaluate the utility of these new metrics compared to conventional approaches
Variations on the Author
Get PDF“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
Get PDFWe 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
Cross-State Differences in the Processes Generating Black–White Disparities in Neonatal Mortality
Get PDFThe U.S. Black neonatal mortality rate is more than twice the White rate. This dramatic disparity can be decomposed into two components: (1) disparities due to differences in the distribution of birth weights, and (2) disparities due to differences in birth weight–specific mortality. I utilize this distinction to explore how the social context into which infants are born contributes to gaps in mortality between Black and White neonates. I analyze variation in Black–White differences in neonatal mortality across 33 states using 1995–2010 data. For each state, I calculate the contribution of differences in birth weight distribution versus differences in birth weight–specific mortal ity to the total disparity in mortality between White and Black neonates. Disparities are largely a product of different birth weight distributions between Black and White newborns (mirroring the pattern for the United States as a whole). However, in at least nine states, differences in birth weight–specific mortality make a notable contribution. This pattern is observed even among those from advantaged sociodemographic backgrounds and is driven by differences in mortality among very low birth weight neonates. This calls attention to inequality in medical care at birth as an important contributor to racial disparities in neonatal mortality
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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Life Chances: Infant Mortality, Institutions, and Inequality in the United States
No full textThe dissertation explores variation in socio-demographic inequalities in infant mortality in the U.S. with three empirical chapters.
The first empirical chapter focuses on inequalities in the likelihood of infant mortality by maternal education. Drawing on vital statistics records, I begin by assessing variation in these disparities across states. In some states, infants born to mothers with less than twelve years of schooling are more than twice as likely to die as infants of mothers with four years of college or more. I then examine how variation in the magnitude of these inequalities is associated with key medical system institutions. I find that more widespread availability of neonatal intensive care is associated with reduced inequality. In contrast, greater supply of primary care is linked to slightly larger differences in infant mortality between mothers with low and high education.
In the second empirical chapter, I explore racial disparities in neonatal mortality by stratifying these gaps based on two generating mechanisms: 1) disparities due to differences in the distribution of birth weights, and 2) those due to differences in birth weight-specific mortality. For each state, I then calculate the relative contribution these mechanisms to disparities in neonatal mortality between whites and blacks. Two patterns emerge. In some states, racial disparities in neonatal mortality are entirely a product of differences in health at birth. In other states, differential receipt of medical care contributes to disparities in very low birth weight mortality between white and black neonates.
The third empirical chapter evaluates the relationship between local public health expenditures and socioeconomic inequalities in infant mortality. Drawing on local government expenditure data in a sample of large municipalities, I explore the extent to which health and hospital spending are associated with inequalities in county infant mortality rates between mothers with low and high levels of educational attainment. For white mothers, I find that hospital expenditures are negatively associated with educational inequalities in infant mortality, but that other health expenditures are positively associated with inequality. In contrast, local public health expenditures are not significant predictors of educational inequalities in infant mortality rates for black mothers.Sociologyinfant mortality; health disparities; institution
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