1,720,991 research outputs found
Effects Of Device Screen Size On Online Information Search Quality & Efficiency
No full textWith recent advances in mobile technologies and the growing ubiquity of wireless network accessibility, online information search tasks are now being conducted on mobile devices with a broad range of screen form factors. Screen size is particularly variable among devices, though its impact on search efficiency and quality is unknown. This study investigates the relationship between device screen size and users' information search efficiency and quality. Thirty-six participants were tested in a variety of closed informational search tasks on three screen sizes corresponding to the Apple iPhone, iPad, and Macbook Air (13"). Although it was hypothesized that small screen size would detrimentally impact web search performance, analysis of results shows that informational search tasks were not significantly affected by screen size for measures of time on task, answer correctness, or perceived confidence or effort. The implications of these findings for mobile web searching are discussed. ii
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
Copyright and Commerce: The DMCA, Trusted Systems, and the Stabilization of Distribution
Get PDFThe Digital Millennium Copyright Act has been criticized for granting too much power to copyright holders, offering them new technological controls that may harm the public interest. But, by considering this exclusively as a copyright issue, we overlook how the DMCA anticipates a technological and commercial infrastructure for regulating not only copying, but every facet of the purchase and use of cultural goods. In upholding the law in Universal v. Reimerdes, the courts not only stabilized these market-friendly arrangements in cultural distribution; they extended these arrangements into realms as diverse as encryption research and journalism, with consequences for the very production of knowledge
The Politics of 'Platforms'
Get PDFOnline content providers such as YouTube are carefully positioning themselves to users, clients, advertisers, and policymakers, making strategic claims as to what they do and do not do, and how their place in the information landscape should be understood. One term in particular, 'platform,' reveals the contours of this discursive work. 'Platform' has been deployed in both their populist appeals and their marketing pitches - sometimes as technical platforms, sometimes as platforms from which to speak, sometimes as platforms of opportunity. Whatever tensions exist in serving all of these constituencies are carefully elided. The term also fits their efforts to shape information policy, where they seek protection for facilitating user expression, yet also seek limited liability for what those users say. As these providers become the curators of public discourse, we must examine the roles they aim to play, and the terms with which they hope to be judged.Institute for the Social Science
The New(s) Creators: Labor, Precarity, and Community on Global Subscription Platforms
No full text161 pagesThe “digital transformation” of the news industry—brought on initially by the web and later by social media—has been the subject of hundreds of studies and enduring discussions about the role of technology in the future of journalism. This dissertation enters this debate by examining how the structures, logics, and incentives of the social media economy are presently reconfiguring the work of independent digital journalism on global subscription platforms. Drawing on in-depth interviews with 30 independent journalists spanning 9 countries and an analysis of the American subscription platform Substack, I argue that journalists’ labor on subscription platforms mirrors the nature of work undertaken by social media influencers in the “creator economy.” I explore this argument by highlighting three dimensions of their labor that represent how platformization and creator cultures have pervaded journalists’ work: relations with news communities, experiences with precarity, and self-branding and identity management. My findings suggest that global subscription platforms challenge and reimagine the role of identity and subjectivity in news production in spaces largely unsupported by advertising or algorithms. Yet, this emerging space also introduces new inequalities in access, financial success, and sustainability that are familiar concerns from the social media economy and facing full-time cultural producers. I explore this argument with particular attention to voices traditionally excluded from the journalistic mainstream by highlighting journalists from underrepresented communities who are working to reform and reimagine the future of news. I conclude by considering how subscription platforms play a role in challenging the norms and cultures of the institution of journalism—for workers within and beyond the United States—whether or not these challenges lead to meaningful media reform.2026-09-0
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Can an Algorithm be Wrong?
No full textHow do we know if we are where it’s at? Tarleton Gillespie explores the controversy over Twitter Trends and the algorithmic ‘censorship’ of #occupywallstreet
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