1,721,060 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
Architectural paradigms for robotics applications
No full textIn recent years, several technical architectural paradigms have been proposed to support the development of distributed and concurrent systems. Object-oriented, component-based, service-oriented approaches are among the most recent paradigms for the implementation of heterogeneous software products that require complex interprocess communications and event synchronization. Despite the sharing of common objectives with distributed systems research, the robotics community is still late in applying these research results in the development of its architectures, often relying only on the most basic concepts.
In this paper, we shortly illustrate these paradigms, their characteristics, and the successful stories about their application within the robotic domain. We discuss benefits and tradeoffs of the different solutions with the goal of deriving some practical principles and strategies to be exploited in robotics practice. Understanding the characteristics, features, advantages, and drawbacks of the different paradigms is, indeed, crucial for the successful design, implementation, and use of robotic architectures
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
Peer: an architectural pattern
No full textVirtual Organizations (VOs) are transitory communities made of individuals and institutions coupled together by advanced communications technologies. Today’s VOs are more and more demanding in terms of efficiency and flexibility of the technological infrastructure.
Envisioning VOs in which all participants are both resource providers and consumers, in a peer-to-peer fashion, seems to be an appropriate solution.
This paper proposes a structure for programmed elements, i.e. Peers, sharing resources through a peer-to-peer network. Publishing and discovery of resource provision services are managed by the routing and communication modules. The first one creates publication/query
messages and computes their destination, which is then used by the communication service to transport the message to the destination Peer
Service-oriented grids for dynamic e-learning environments
No full textModern Grids are moving towards Service-Oriented Architectures (SOAs) to cope with new distributed applications, beyond traditional massive computing for scientific research. Resource sharing across different e-learning domains in a transparent, seamless and secure way, with wireless support, is the goal of the Grid architecture we have developed. In the first part of the paper we describe Grid Services which cooperate to perform the above task, including discovery and streaming of multimedia objects, content update, and QoS management. The second part of the paper is devoted to the Peer-to-Peer approach we are exploiting to realize a new conception of Grid, where all nodes are potential service providers
and contribute to service sharing, discovery and delivery
Collaborative teleoperation of manipulation tasks over the Internet using an open, component-based architecture
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