1,720,968 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
Tezosentan and Right Ventricular Failure in Patients with Pulmonary Hypertension Undergoing Cardiac Surgery: The TACTICS Trial.
No full textOBJECTIVE:
To evaluate the efficacy of tezosentan in reducing the incidence of right ventricular (RV) failure and associated mortality in patients with pre-existing pulmonary hypertension. The primary endpoint was the proportion of patients with RV failure during weaning from cardiopulmonary bypass (CPB), assessed 30 minutes after the end of CPB.
DESIGN:
Multicenter, double-blind, randomized, placebo-controlled trial.
SETTING:
Thirty-one cardiac surgical centers in 14 countries.
PARTICIPANTS:
Two hundred seventy-four patients with pulmonary hypertension aged≥18 years scheduled to undergo cardiac surgery.
INTERVENTION:
Intravenous tezosentan (5 mg/h) during surgery and up to 24 hours afterwards (1 mg/h), or matched placebo.
MEASUREMENTS AND MAIN RESULTS:
One-hundred thirty-three patients received tezosentan and 141 placebo. RV failure occurred in 30 patients (10.9%), 37% of whom died. There was no difference in the incidence of RV failure between the two treatment groups (relative risk reduction: 0.07 [95% CI-0.83, 0.53; P = 0.8278]).
CONCLUSION:
A reduction in RV failure with tezosentan was not observed in this study.(Current Controlled Trials, identifier NCT00458276)
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
Work and study in construction education - practices of undergraduate students in Australia
No full textThe aim of this paper is to determine the amount of time construction management students spend engaged in paid work and study during semester time. Past research has shown that working long hours has a negative effect on the study patterns of undergraduate students. Students responded to a questionnaire on the nature of their paid work while enrolled in full-time study in a sample of universities across Australia. The results showed that students are working on average 18 hours per week during semester time. The results indicate that students in their first two years tend to undertake casual work that is not related to their degree. However, this pattern changes in the later two years of the course, where students switch to roles in construction that do relate to their coursework. The students start working on average 15 hours in the first year of their degree, and the time spent rises to 23 hours in their fourth year. Past research suggests that students may be working to an extent beyond what is considered beneficial to their studies. The implications of the amount of time working and the type of work are discussed. The long-term impact of high levels of work and study on construction students are unknown. The paper concludes by suggesting that universities need a greater awareness of the impact of paid employment on engagement with their learning
Construction Cost Management in China: The Impact of Government Economic Reforms
No full textThis paper examines the changes in Chinese construction cost management practices brought about by the 'open door' economic reforms implemented by the Chinese government since 1978. Prior to these reforms the construction industry was tightly controlled by the government and a quota pricing system was used whereby all projects were priced according to nationally uniform standards of pricing prepared and issued by the government. The 1978 economic reforms resulted in a transformation from this closed system to a market oriented system that incorporated competitive bidding utilizing market pricing. The key problem that the industry has faced is coping with fundamental changes to their industry in a relatively short period of time. The methodology to investigate this problem comprises a review of English/Chinese literature, an exploratory perception survey of construction professionals in the Chinese construction industry in Tianjin and Beijing and a project case study interview in Beijing. The government economic reforms have had a profound effect on the Chinese construction industry and cost management practices. The Chinese industry has developed at an unprecedented phenomenal rate to the point where it is now a global leader. The industry has shifted to a more 'western' open market system and has embraced competitive bidding and market pricing. This transformation has occurred in a very short space of time and the research has found that the industry is struggling to adapt to the 'western style' of cost management. The research has found a pressing need for the further development of cost management education and training in China. In the past decade more than 110,000 cost engineers have been certified in China with growing concerns about the quality and adequacy of the certification system. The paper provides original contribution to the field through in-country case studies, surveys and interviews and the analysis/translation of Chinese literature
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