1,721,040 research outputs found
In brief: The recession will be over sooner than you think
Full text linkNick Bloom and Max Floetotto report that key measures of uncertainty have dropped so rapidly that growth will resume in late 2009.
Bossonomics: the economics of management and productivity
Full text linkNick Bloom and John Van Reenen analyse the role of management practices in driving firm performance and national productivity.
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
Does Product Market Competition Lead Firms to Decentralize?
Full text linkThere is a widespread sense that over the last two decades firms have been decentralizing decisions to employees further down the managerial hierarchy. Economists have developed a range of theories to account for delegation, but there is less empirical evidence, especially across countries. This has limited the ability to understand the phenomenon of decentralization. To address the empirical lacuna we have developed a research program to measure the internal organization of firms - including their decentralization decisions - across a large range of industries and countries. In this paper we investigate whether greater product market competition increases decentralization. For example, tougher competition may make local manager's information more valuable, as delays to decisions become more costly. Since globalization and liberalization have increased the competitiveness of product markets, one explanation for the trend towards decentralization could be increased competition. Of course there are a range of other factors that may also be at play, including human capital, information and communication technology, culture and industrial composition. To tackle these issues we collected detailed information on the internal organization of firms across nations. The few datasets that exist are either from a single industry or (at best) across many firms in a single country. We analyze data on almost 4,000 firms across twelve countries in Europe, North America and Asia. We find that competition does indeed seem to foster greater decentralization.Decentralization, management practices
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
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