1,721,076 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
The impacts of RMB real exchange rate fluctuation on the export structure of the manufacturing industry
Get PDFThis paper empirically examines the impacts of exchange rate on the real economy in China. Leveraging the variation in RMB exchange rate in China, the analysis finds that the appreciation of RMB had a negative impact on the export of the manufacturing industry and that the effect varies across industries. The appreciation of the RMB promoted the export of high-techand capital-intensive industries and restrained that of the low-capital and labor-intensive industries, tilting the overall export structure toward high-tech and capital-intensive industries
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 value of dynamic regulation : the impacts of the double first-class policy on ascent of Chinese universities
No full textThis paper investigates the impacts of dynamic regulation of China’s higher education institutions on the quality and quantity of their research outputs. Using university level data and an SCM-DID estimator, we found that the double first-class policy benefits the overall performance of Chinese universities. The universities facing more uncertainty, such as those that are on the borderline of being demoted, tend to produce 25.5% more paper than their peers. However, there is no evidence of quality being different between the two groups. These results are robust to different model specifications and alternative constructions of DID settings. In conclusion, the double first-class policy has changed the traditional ranking among Chinese universities, and the dynamic competition brought by this policy improves the quality (except for those universities on the borderline) and quantity of papers as well as the international rankings for Chinese universities in the short run. However, the non-public selection and opaque standard of this policy incentivize the demoted universities to engage in a strategy of producing a high quantity of low-quality papers. Together, this research suggests the government should consider a more transparent policy design to incentivize universities to invest in activities that could have long-term benefit.</p
DOES ETHANOL IN GASOLINE AFFECT AIR QUALITY? EVIDENCE FROM NASCAR
No full text50 pagesWhether ethanol gasoline is more environmental-friendly than pure gasoline in air pollutants’ emissions has been an important but controversial topic for over a decade. To investigate the question, we use quasi-experiment methods to analyze the changes in types of air pollutants’ concentrations near the race tracks taken by the NASCAR fuel-switching policy, which shifted from pure gasoline to an E15 blend implemented in 2011. We find that switching fuel to have 1 million racing miles in one race day can reduce up to 12.4% of ambient NO2 concentrations within areas 50 miles around the race tracks. Our research also suggests that before 2011 in the areas around the race tracks, especially in the Northeast states of the U.S., there might exist a relative deficiency of volatile organic compounds (VOC), which impeded and even reduced the accumulation of ground ozone, when more man-made NO? was produced during racing days
Marginal Effect of Road Construction on Traffic Speed: Evidence from New York City
No full text49 pagesRoad Construction, which is proposed as a solution to severe congestion, might rise an increase in commuting time and decease in traffic speed due to the poor management or delay in completion. This paper sets up a traffic dataset with 2 million real-time traffic speed data and 13,000 construction record data from 2017 - 2019, to estimate the marginal effect of road construction on traffic speed in New York City and evaluate the efficiency of construction contrast. The main finding is that traffic speed will decrease by 3.47\% on average when vehicles are 1km closer to road project. Speed decreases slower when vehicles are further from construction. Besides, long duration and "unplanned" project has greater effect on vehicles speed. The estimated cost of decrease in speed is about \$326-451 per hour, which is relatively higher than penalty in construction contrast. Based on this, this paper suggests a bonus for early completion or a higher penalty on late completion should be considered in road construction contrast
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
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