1,721,835 research outputs found
A performance study of WebDav access to storages within the Belle II collaboration
No full textWebDav and HTTP are becoming popular protocols for data access in the High
Energy Physics community. The most used Grid and Cloud storage solutions provide such kind
of interfaces, in this scenario tuning and performance evaluation became crucial aspects to
promote the adoption of these protocols within the Belle II community. In this work, we present
the results of a large-scale test activity, made with the goal to evaluate performances and
reliability of the WebDav protocol, and study a possible adoption for the user analysis. More
specifically, we considered a pilot infrastructure composed by a set of storage elements
configured with the WebDav interface, hosted at the Belle II sites. The performance tests include
a comparison with xrootd and gridftp. As reference tests we used a set of analysis jobs running
under the Belle II software framework, accessing the input data with the ROOT I/O library, in
order to simulate as much as possible a realistic user activity. The final analysis shows the
possibility to achieve promising performances with WebDav on different storage systems, and
gives an interesting feedback, for Belle II community and for other high energy physics
experiments
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
A lightweight federation of the Belle II storages through Dynafed
No full textBelle II experiment can take advantage from Federation technologies to simplify data management. The increasing adoption of HTTP and WebDAV protocol by sites, enable to create lightweight solutions to give an aggregate view of multiple distributed storages. In this work we present a study on the possible usage of the software Dynafed developed by CERN for the creation of a dynamic data federation system. We created a first Dynafed server, hosted in the datacentre in Napoli, and connected with about the 60% of the production storages of Belle II. Then we aggregated all the file systems under a unique HTTP path. Over this infrastructure we performed a set of stress tests, in order to evaluate the impact of federation, the service resilience, and to study the capability of Dynafed to redirect clients properly to the most convenient file replica. The results show good potentialities of the service and suggest further investigation
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
- …
