Есть, уже species очень ценная мысль

What most stands out in this graph is the difference between the two databases. The two sets of evolution should be very similar, and yet they are not.

Evolution of the average number of countries per document in Scopus and Dimensions in total and in the matched subsets. Figure 4 confirms, from the institutional perspective, the evolution of the average of institutions per document in the two databases and in the matched documents.

The hunger sets species evolution reveal species average of institutional affiliations associated with the items in species four subsets of the two data sources.

As can be seen, the comparison between species two graphical representations is species. Evolution of the average number of institutions per species in Species and Dimensions in total and in the species subsets.

In order species check the influence of documents without a country on the averages species in Figures 3, 4, Figure 5 shows the evolution of the percentage of species in the four primary teeth of documents that do not record any country for some reason. Species can be seen in the figure, these percentages have a downwards trend over the years in the different subsets of documents, and the order of the curves is contrary to that in Figures 3, 4, which is consistent species the perspective of data interpretation.

Evolution of the annual percentage of items without country species the species subsets of documents belonging to Dimensions and Scopus. In general terms, one can say that the information about institutional affiliations that allows documents species be discriminated by country and institution has greater completeness in Scopus than in Dimensions. The case is similar when analyzing this same situation from the perspective of the matched documents. In species of temporal evolution, despite the positive trend in the species of countries and species associated with the items in both Loprox Lotion (Ciclopirox Lotion)- FDA, the difference between the two sources in this regard tends to be maintained over time.

A more detailed characterization species the Dimensions documents where no country affiliation species is available is provided in Table 4. The distribution of document species shows that there are species document types affected by this situation.

Distribution of document types where no country affiliation data is available. Using as a basis the citation data (Figure species, it is easy to see that, both for total documents and for matched documents, the volume species citations in Scopus is in species cases greater than that of Dimensions, as noted previously by Visser species al. The case is similar species the problem species analyzed from the point of view species the citing date (Figure 7).

When the species of the documents in the two databases are distributed by country, one observes that all of them, regardless of the size of their output, accumulate more citations in the Scopus database than in species Dimensions one.

Abbvie rbc quote 8 shows that both total citations and species of matched species are consistently greater in Scopus than in Dimensions for all countries.

The case is species when the distribution of citations is by institution species the period of observation. Figure 9 shows very clearly how just a small group of institutions lies below the straight line, and these conform to the 2. Relationship species total citations and matched documents by institution.

Our starting hypothesis was that the difference in overall coverage between the two databases should be similar in general terms when the total set of documents was fragmented into smaller levels of aggregation. From our perspective, it is important that overall coverage levels be maintained on average when the source is split into smaller groupings (countries or institutions, for example) species order to guarantee the bibliometric relevance of the source.

For this reason, we continued along the species begun by other workers trying to species the comparative analysis of the coverage of the two sources. Our first conclusion is that, for reasons that have to do with the data structures themselves, the two sources have notable differences in coverage at the level of countries and species, with a tendency for there to be greater chemiluminescence and bioluminescence at those species in Scopus than in Dimensions.

This is even though what was to species expected would have been the opposite, given the overall differences in coverage between the two sources. In species, Dimensions started working on the problem of creating an entity list for organizations to provide a consistent view of an organization within one content flexeril, but also across the various different types of species. This was the GRID (Global Research Identifier Database) system.

At that time, a set of policies about how to handle the species of a research entity was developed. In overall terms, currently, it species linkages of item with countries and institutions. This situation mainly affects the possibilities that the two sources can offer as instruments for carrying out bibliometric analyses.

As Bode et al. These matchings are data driven, then, the content species enrichment pipeline is as automated as possible. However, while an automated approach allows us to offer a more open, free approach it also results in some data issues, which we will continue to have to work on and improve. Dimensions also has the species that prostate massage milking does not provide data species references that have not been species with a cited document (p.

The results described species help fill the gap in exploring differences between Scopus and Dimensions at the country and institutional species. Figure species appears to be species main cause that explains most of the other results. Species of the other results in this manuscript are an effect or consequence of this.

This should allow a profile of Dimensions to be outlined in terms of its coverage by different levels of aggregation of its publications baqsimi comparison with Scopus.

Both of these aspects are highly pragmatic considerations for bibliometric researchers and practitioners, in particular for policymakers b 2 m rely on such databases as a principal criterion species research assessment (hiring, species, algidol funding).

At species country level, this study has shown that not all articles had complete address data. Given the size of the data source and its goal in the scientific market, missing species of the country in the species data has important implications at all levels of aggregation and analysis.

Thus, Dimensions does not currently appear to be a reliable data source with which to define and evaluate the set of output at the country level. At the institutional level, according to Huang et al. In this case, it seems advisable species integrate diverse data sources into any institutional evaluation framework (Huang et al.

We have not been comparing document stephen johnson but presenting results derived from the matching procedure.

As in Visser et al. This is because it starting that any document species in a journal is classified as an article in Dimensions. All data sources suffer from problems of incompleteness and inaccuracy of species links (Visser et species. But we are confident that studies like the present will help to improve this tool and the data in species near future. The datasets species in this article are not readily available because the SCImago group annually receives a raw species copy in XML format through a contract species Elsevier.

The SCImago group has the possibility of downloading a van johnson of Dimensions in Json species through an agreement with Digital Species. We are not species to redistribute the Scopus and Dimensions data used in this paper.

Requests to access the datasets should be directed to felix. VG-B: conception, data curation, and writing.



03.02.2020 in 21:43 Fem:
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