1,721,074 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Combustion characteristics of biodiesel saturated with pyrolysis oil for power generation in gas turbines
No full textThere is a perceived need for multi-fuel burner geometries capable of operating with variable composition fuels from diverse sources to achieve fuel flexibility in gas turbines. The objective of the research covered herein is a comparison study between two liquid fuels, a biodiesel (in a pure form) and the biodiesel as a saturated mixture with a pyrolysis by-product; these two fuels were compared against a standard kerosene as a baseline. The research methodology involved two stages: firstly atomization patterns and injection regimes were obtained using a high speed imaging method, secondly a combustion test campaign was undertaken using a swirl burner to quantify the operational behaviour, species production and exhaust gas compositions of the fuels. Emissions, flame stability trends and power outputs were measured at gas turbine relevant equivalence ratios. Excess oxygen and atomization trends in the biodiesel seem to be playing a major role in the production of emissions and flame stability when compared to kerosene. Also, heavy organics seem to be acting as catalytic substances for OH production close to the burner mouth. In terms of stability and combustion, it is proposed that the saturated blend would be a viable candidate for power generation. © 201
It’s not all About Money: the Collateral Benefits of Crowdfunding
No full textPurpose
Crowdfunding (CF) is a fast-developing and multifaceted phenomenon which is changing the entrepreneurial landscape, with implications in areas such as finance, sociology, and management. Although it is basically an alternative way to fund innovative projects using the potentiality of Internet, many scholars agree that CF can provide great value other than money. Nevertheless, only few studies have been realized to shed light on how a CF campaign can help in practice the evolution of an entrepreneurial initiative. In such scenario, this article aims to build an integrative model and a taxonomy to classify the additional benefits of CF for the successful undertaking and sustainability of the entrepreneurial process.
Design/methodology/approach
Based on a systematic review of CF and entrepreneurship literature, the potential benefits of CF are defined and grouped in different areas and categories, according to their nature and level of specificity. After several iterations, where duplications, mismatched and nonsense have been deleted or adapted, a framework with a standard taxonomy has been draft.
Findings
The model proposed testifies that CF is much more than a funding instrument. Several areas of benefits have been identified for the project, the start-up and the creator itself, such as viability, cost reduction, market research, product design, demand and customer relationship.
Research limitations/implications
Interesting implications can be derived for CF platforms managers, when designing tools for improving the platform performance and attractiveness and for project creators and consultants, when deciding the characteristics of a campaign according to their needs.
Future researches can focus on the determinants of these benefits and try to operationalize the latter, in order to measure the effectiveness of the campaign according to prearranged objectives.
The empirical validation of some benefits and the study of the relationship between benefits and project characteristics or platform type can be further follow-up investigations.
Originality/value
The theoretical framework obtained wants to be an exhaustive snapshot of the benefits that have been related to a CF campaign so far, categorized in different areas according to their characteristics. The outcome of this analysis represents a starting point for future researches on the benefits of CF for project creators and start-ups
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