1,721,315 research outputs found
Production and distribution centers of Serra-d’Alto-style pottery (4th millennium BC) in southeastern Italy
No full textGoing 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
Rehabilitation, using prosthetic implants, in patients with cancer of the oral cavity [Riabilitazione implanto protesica in pazienti trattati per neoplasia del cavo orale.]
No full textBACKGROUND: The number of patients treated for neoplasms of the oral cavity (by surgery and/or radiotherapy) requiring prosthesis rehabilitation using osteointegrated implants is increasing greatly. The objective of this research is to examine the correlation between prosthesis rehabilitation using osteointegrated implants, radiotherapy and the use of hyperbaric oxygen treatment in order to reduce the risk of osteoradionecrosis. METHODS: Research was carried out on 13 patients with 58 implants. The patients were divided into three sample groups: group A patients underwent radiotherapy (10 implants), group B patients did not undergo radiotherapy (29 implants) and group C patients first underwent radiotherapy and then hyperbaric oxygen treatment (19 implants). The group C patients first underwent hyperbaric oxygen treatment at 2.5 atmospheres. The osteointegrated implants were then applied and hyperbaric oxygen treatment was carried out again over 20-30 postoperative sittings without any other treatment between the sittings. The whole test period lasted 24 months. RESULTS: Only two implants were lost out of the 58 implants and they were in the group that had undergone radiotherapy. CONCLUSIONS: The results show how pre and postoperative hyperbaric oxygen treatment improves the success rate of osteointegrated implants in mandibular areas that had previously undergone radiotherapy. Moreover, the stability of the prostheses that are fixed to the implants is greatly improved compared to conventional methods
Bringing model-based systems engineering capabilities to project management: An application to prince2
No full textPRINCE2 is arguably one of the most adopted process-based methods for project management. Currently, PRINCE2 is defined in a textual specification, which describes the principles, the themes, and the processes that project managers should apply in their management activities. Although the specification is well structured and mature, the specification does not provide a browsable digital representation that can be interactively used for learning and/or for the specification application during project management activities. This paper aims to overcome these limitations with the application of a modelbased systems engineering approach to represent the PRINCE2 specification in a model-based format. This can bring several benefits to the specification, including the availability of a graphical, comprehensive and digitally browsable visualization of the PRINCE2 processes, their inputs/outputs, and the constituting tasks. The modelbased format has been obtained by a top-down mapping of the PRINCE2 specifications, beginning with the process architecture in IDEF0 down to the individual tasks, roles, and tools in BPMN 2.0. Besides supporting PRINCE2 understanding and application, the model-based format can also serve as a baseline for further exploitations, such as consistency verification of the PRINCE2 specification and model-based process simulation for the governance of the PRINCE2 processes and of the project management activities
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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