1,721,042 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
Eight years secular trends of physical self-esteem among Swedish adolescents
No full textThe main aim of this study was to explore secular trends between 2000 and 2008 in physical self esteem by comparing cross sectional cohorts of young adolescents
Integrating evidence based pedometry for adolescents into the physical activity on prescription (PAP) model in Sweden
No full textDispelling 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
Secular trends of pedometer-determined physical activity in Swedish school children
No full textAim: To explore the secular trends (time change) of pedometer-determined physical activity (steps per day) in Swedish schoolchildren 7\u969 years of age from 2000 to 2006. It was an additional aim to examine the secular trends in body mass index.
Methods: The study was analyzed between two cross-sectional cohorts on children 7\u969 years of age carried out in October 2000 (336 children, 153 girls) and March/April 2006 (168 children, 83 girls) in the same five schools in south eastern Sweden, using identical procedures at the two occasions. Data of mean steps per day were collected during four consecutive weekdays (sealed pedometer Yamax SW-200 Tokyo, Japan) and in addition height and weight were measured.
Results: Physical activity (mean steps per day) was significantly higher in 2006 than in 2000 among girls (13788 vs. 15141 steps per day) and boys (15991 vs. 16973 steps per day). The share of girls and boys to meet the preliminary weight control recommendations of 12000 and 15000 steps per day respectively was higher in 2006 than in 2000: 90% versus 75% (girls) and 67% versus 60% (boys).
Conclusion: The level of physical activity (steps per day) during school weekdays was higher in 2006 than in 2000. Enhanced focus on physical activity in society and at school might have influenced the result
Activity levels and body mass index of children in the United States, Sweden, and Australia
No full textPurpose: Assess the physical activity and body mass index (BMI) levels of children in the United States, Sweden, and Australia. Methods: A total of 1954 children, 6-12 yr old (711 American, 563 Australian, and 680 Swedish) wore sealed pedometers for four consecutive days. Height and weight measures were obtained. Results: Descriptive data for step counts and BMI by sex, age, and country were calculated to determine activity levels and BMI. Three-way multivariate ANOVA for step counts and BMI between countries at each age and sex found that, in general, the Swedish children were significantly more active than the Australian and American children, and the American children were significantly heavier than the Australian and Swedish children. For boys, the mean step counts ranged from 15,673 to 18,346 for Sweden, 13,864 to 15,023 for Australia, and 12,554 to 13,872 for America. For girls, the mean step Counts ranged from 12,041 to 14,825 for Sweden, 11,221 to 12,322 for Australia, and 10,661 to 11,383 for America. The activity curve is somewhat level during the preadolescent years. The rate of increase in BMI with age is much greater in the American children than in the Swedish or Australian children. The percent of American, Swedish, and Australian boys classified as overweight/obese was 33.5, 16.6, and 15.8, respectively. The percent of American, Swedish, and Australian girls classified as overweight/obese was 35.6, 16.8, and 14.4, respectively. Correlation analysis found few significant negative relationships between step counts and BMI. Conclusions: American children tend to be the least active and heaviest with the greatest rate of increase in BMI. The Swedish children are the most active group followed by Australia. Swedish and Australian children maintain lower BMI throughout their prepubescent years than do the American children who have a greater percentage who are classified as overweight
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