1,721,034 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
The Effects of Unemployment on Property Crime: Evidence from a Period of Unusually Large Swings in the Business Cycle
Get PDFThis paper uses a panel of Swedish counties over the years 1988-99 to study the effects of unemployment on property crime rates. The period under study is characterized by great turbulence in the labor market - the variation in the unemployment rates is unprecedented in the second half of the century. The data hence provides a unique opportunity to investigate unemployment effects. According to the theory of economics of crime, increased unemployment rates lead to higher property crime rates. A fixed effects model is estimated to investigate this hypothesis. The model includes time- and county-specific effects and a number of economic and socio-demographic variables in order to control for unobservables and covariates. In addition the model is estimated with linear and quadratic time trends to control for county-specific unobserved trends. The result gives strong evidence that unemployment has a positive and significant effect on burglary, car theft and bike theft.Economics of Crime; Unemployment; Panel Data; Fixed Effects Estimation
The impact of attending an independent upper secondary school : Evidence from Sweden using school ranking data
Get PDFThis paper provides a comprehensive study on how attending a Swedish Independent upper secondary school affects students’ academic and short-term post-secondary outcomes. Beyond having access to population registers that measure school attendance and student outcomes, we are able to control for student preferences for independent provision, as stated in school application forms. The results from a CEM/VAM approach suggest a positive independent school effect on: final GPA, test results in English and Swedish, the likelihood to graduate on time, and attending post-secondary education. However, we also find a larger discrepancy between the final grade and the standardized test result among the independent school students, in a way that accords with more lenient grading practices among independent schools. Results from an alternative difference-in-difference analysis around admission thresholds yielded no additional insights, due to imprecise estimates
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
The impact of local supply of upper secondary field of study
No full textThis paper evaluates the impact on students' educational and labour market trajectories of local supply variations in fields of upper secondary education in Sweden. It takes a broad approach and studies the overall, reduced form, effects on several short-, medium- and long- term outcomes. The results highlight the multidimensional impact of educational supply; expanding supply of one track increases its admission rates, but also leads to a redistribution of students across programs. Increased supply is furthermore associated with decreasing average school peer ability, but also with smaller class sizes, and a higher likelihood of getting into one's top ranked program. There is no strong evidence of any long-term effects on the labour market outcomes of local youth - a finding that may reflect the multifaceted short-run impacts
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