1,721,062 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
Control Strategies for Gaseous Contamination in Museums: a New Method for Assessing Environmental Risk
No full textIn 1995-1996 a “Museum Campaign” using environmental reactivity coupons (ERCs) was begun to assess the air quality in and around a large number of cultural heritage sites throughout Italy. Analysis of the resulting reactivity monitoring database
showed that the outdoor air quality does not (generally) meet the specified acceptance criteria for gaseous pollutants. There were also a significant number of locations where
the indoor air was deemed as "not acceptable" for these environments.
About the same time a project carried out by the Istituto Centrale per il Restauro (Central Institute for Restoration, ICR), “The Risk Map of Cultural Heritage,” was just being completed. It was well known that air pollution and other factors were responsible for bringing about the degradation many items of historical significance. Monitoring was carried out for (among other things) suspended particulate matter, black smoke, sulfur
dioxide, ozone and rain pH to directly define environmental aggressiveness and the rate of deterioration of the various cultural assets. Each single municipality was assigned a
danger (risk) value or index with the aim of defining a hierarchy of the various phenomena according to their hypothetical effects. A correlation was observed between those locations with the highest risk factors and those not meeting reactivity monitoring standards.
Closer examination of past and present reactivity monitoring data revealed that there were a number of locations where this correlation was not as close as one might have expected when compared to the Risk Map. It was suspected that the standard
practice of “normalizing” reactivity monitoring results to a 30-day exposure period mayhave been artificially increasing the reported severity level – especially for exposure
periods greater than 60 days. Using the same reactivity monitoring rates and acceptance
criteria, a new environmental classification scheme has been developed using actual
corrosion results and exposure times. This approach showed that the copper reactivity
rates were being overstated more than 35% of the time with these longer monitoring
periods.
Since the original Museum Campaign, reactivity monitoring has continued for
some of the same sites as well as a number of new sites. These results have shown higher
average reactivity levels indicating that, if anything, air pollution levels in Italy are
getting worse instead of better. If these trends continue, many cultural treasures may be
lost or irreparably damaged.
This paper will discuss past and present ERC monitoring results with respect to
this new classification scheme. This with the intent of looking toward their use both as a
standard gauge of outdoor and indoor air quality for museums, libraries, and archives as
well as recommendations for their use as a general monitoring tool for the ICR and the
Risk Map
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
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
La valutazione del "merito" nella cultura giuridica dell'amministrazione penitenziaria: una analisi empirica sul regime del 41 bis
No full textThe special regime regulated by art. 41-bis ord. pen. marks a complex intersection between administration and jurisdiction. The administrative power to organize and control the area of punishment is opposed to the sole legitimacy judicial control of the discretionary action. Although the legal penitentiary field is driven by a will of jurisdictionalization to protect the prisoners constitutional rights, there are areas managed in an "autarkic" form by the prison administration through the infralegislative source of the "circular". The present analysis aims to contribute to the study of these two normative dimensions that cohabit in the space of the special circuit. Conceptually characterized by a supremacy of the bureaucratic authority and "created" by a suspensive regulation, the administrative agent decides for prevalent and non codifiable reasons of security and of fight against organized crime
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
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