1,720,967 research outputs found
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
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
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
Ethnic identification for children of Hispanic intermarriage: Ethnic leakage?
No full textThis item is available only to currently enrolled UTSA students, faculty or staff. To download, navigate to Log In in the top right-hand corner of this screen, then select Log in with my UTSA ID.Ethnic identification of children by a parent is a frequent and important decision made when completing questionnaires which require demographic data. Mixed children, those with parents of different ethnic group membership, are a source of important statistical idiosyncrasies in data collection and population distributions. In this paper I examine the dynamics surrounding an intermarried, Hispanic parents' ethnic identification of a mixed child.
The data for this study is from the 5-percent Public Use Microdata Sample (PUMS) of the 2000 United States (U.S.) Census. This research includes only intermarried couples where one parent is a Hispanic and the other parent is a non-Hispanic. Logistic regressions are used to predict the likelihood that mixed ethnicity children are reported as non-Hispanic. Ethnicity of the daughter and son is measured as dichotomous, as either Hispanic or non-Hispanic. Demographic and socio-economic parental characteristics are used to test hypotheses for the likelihood of non-Hispanic identification of a multi-ethnic child.
The results of this study demonstrate that choices of ethnic identification for Hispanic or Non-Hispanic children are increasingly optional and can be predicted based on a number of important parent attributes including, parental U.S. citizenship and the ability to speak English, for both daughters and sons. The predictive characteristics result in differences for sons and daughters. In sum, demographic change is not only a consequence of births, deaths, and immigration but also a consequence of optional Hispanic ethnic identification selection for children of intermarriage.Demograph
Inadequate parity standardization in Hispanic birth projections
No full textThis item is available only to currently enrolled UTSA students, faculty or staff. To download, navigate to Log In in the top right-hand corner of this screen, then select Log in with my UTSA ID.The primary aim of this analysis is to examine the role of inadequate birth parity standardization as a potential source of error in US Hispanic birth projections. It is proposed that inadequate standardization for birth parity results when the effects of birth parity distributions on subsequent births are not included as part of the methodological assumptions of a projection.
Specifically, because individual fertility decisions are framed within a sequential decision- making model, they alter the perceived costs and benefits of marginal births, and by extension, the probability of these births occurring. At the aggregate level, these individual decisions are manifest in birth parity distributions, which introduce non-uniform probabilities for additional births among women within an analytical group. To the extent that the methods used to project subsequent births are unable to account for these variations, inadequate parity standardization will be a source of error.
Because methods that do not account for the effects of birth parity distributions, by default, assume no corresponding effect, this analysis first examines the birth parity distributions of US Hispanics and Non-Hispanics to determine if their birth parity distributions differ from the null assumption of a uniform distribution. Moreover, to the extent that the birth parity distributions of US Hispanics differ from non-Hispanics, the potential for inadequate birth parity standardization as a disproportionate source of error in US Hispanic birth projections is introduced. A method that accounts for variations in birth parity distributions is tested to assess improvements in projection accuracy, when compared to traditional methods.
Differences in birth parity distributions between the groups confirm inadequate birth parity standardization as a potential source of error in US Hispanic birth projections. Projection results comparable to official US projections were obtained, with the use of fewer resources and less data.Demograph
NAFTA and determinants of Mexico's internal migration: 1995-2005
No full textThis item is available only to currently enrolled UTSA students, faculty or staff. To download, navigate to Log In in the top right-hand corner of this screen, then select Log in with my UTSA ID.The purpose of this dissertation is to study the determinants of interstate migration flows for the period 1995--2005. I use panel data techniques for the estimation of extended gravity models in order to identify variables contributing or deterring contemporary interstate migration flows in Mexico. Particular focus is placed on the role of regional patterns of industrial concentration in different economic sectors as possible push or pull factors for internal migrants.
The findings suggest that higher wages at origins discourage out-migration, and higher wages in the destination places act as a pull factor for in-migration. Internal migrants seem to be discouraged from embarking on interstate migration as the risk associated with labor market volatility increases. A state's relative concentration in the manufacturing sector is in a greater manner associated with deterring out-migration flows rather than positively affecting inflows of migrants. Nonetheless, its effects on the migratory system become significant when this sector interacts with geography. The Northern Border, in particular, does pull internal migrants.
The study explores the role of regional industrial concentration on certain economic activities, finding that the relative specialization in the agricultural sector influences the Central part of Mexico, while changes in the professional services sector influence the Capital region. The commerce sector seems to have strong and positive effects for inflows of migrants in the Southern region.
These findings support the argument that regions in Mexico are to some extent segmented following particular dynamics in terms of their economic development and their relationship with internal population movements.Demograph
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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