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We found that close to half of all documents in Dimensions are what does clomid do to you associated with any country of affiliation while the proportion of documents without this data in Scopus is much lower.

This situation mainly affects the possibilities that Dimensions can offer as instruments for carrying out bibliometric analyses at the country and institutional level. Both of these aspects are highly pragmatic considerations for information retrieval and the design of policies for the use of scientific databases in research evaluation. As new multidisciplinary scientific bibliographic data sources are coming onto the market, there is growing interest in comparative studies looking at aspects of the coverage they offer.

Sex urethra databases have begun to play an increasingly important role in the academic ecosystem. There are several reasons for this, including burgeoning competitiveness in research, greater availability of data, and the need to justify the use of public funds. This context has driven the diversification of evaluations of publication and citation data use cases as well as of research use cases that have not been met by existing scholarly databases (Hook et al.

Since bibliometric methods are used in multiple areas for a variety of purposes, especially research evaluation, the results they provide may vary depending on the representativeness of the database what does clomid do to you (Mongeon and Paul-Haus, 2016; Huang et al. The new data sources can offer several benefits for research evaluators because they may have better coverage or have capabilities that make them a better fit for a given impact evaluation task, and they can reduce the cost of evaluations and make informal self-evaluations of impact Glucotrol XL (Glipizide Extended Release)- FDA for researchers who would not pay to access that kind of data (Thelwall, 2018).

Given the potential value of these data sources for research evaluation, it is important to assess their key properties to better understand their strengths and weaknesses, in particular, to decide whether their data is sufficient in volume, completeness, and accuracy to be useful for scientists, policymakers, and other stakeholders. Traditionally, what does clomid do to you only homogeneous record of published research available when funders and governments sought additional information to help them make evidence-driven decisions was the Web of Science (WoS).

The appearance of the Scopus database (Baas et al. At that time, it appeared that Scopus and WoS had entered into head-on competition (Pickering, 2004), and any comparison of them called for the utmost care and methodological consistency. The results outlined a profile of Scopus in terms of its coverage by areas-geographic and thematic-and the significance of peer-review in what does clomid do to you publications. Both of these aspects are of highly pragmatic significance for policymakers and the users of scientific databases.

Years later, Mongeon and Paul-Haus (2016) revisited the issue and compared the coverage of WoS and Scopus what does clomid do to you examine whether preexisting biases (such as language, geography, and theme) were still to be found in Scopus.

They concluded that some biases still remained in both databases and stated that this should be taken into account in assessing scientific activities. For example, most languages and countries are underrepresented, which contributes to the known lack of visibility of research done in some countries. Hence, when using bibliometric methods for research evaluation, it is important to understand what each tool has to offer and what its limitations are and to choose the right tool for the task at hand before drawing conclusions for research evaluation purposes (Mongeon and Paul-Haus, 2016).

Google Scholar appeared to be an alternative to WoS and Scopus, but its suitability for research evaluation and other bibliometric analyses was called strongly into question. At the beginning of 2018, Digital Science launched Dimensions, a new integrated database covering the entire research process from funding to research, from publishing results through attention, both scholarly and beyond, to commercial applications and policymaking, consistently matched in multiple dimensions (Adams et al.

This new scholarly data source was created to overcome significant constraints of the existing databases. It sought to understand the research landscape through the lens of publication and citation data and help the academic community to formulate and develop its own metrics what does clomid do to you can tell the best stories and give the best context to a line of research (Bode et what does clomid do to you. Most of them have focused on publication and citation in specific thematic fields, but few of them have taken a global perspective.

The findings of these studies in the field of Rong wang Science show Dimensions to be a competitor to WoS and Scopus in making nonevaluative citation analyses and in supporting some types of formal research evaluations (Thelwall, 2018).

But what does clomid do to you reliability and validity of its field classification scheme were questioned. This scheme is not based on journal classification systems as it is in WoS or Scopus, but on machine learning. This feature makes it what does clomid do to you to undertake large-scale investigations in future studies to ensure that metrics such as the field-normalized citation scores presented in Dimensions and calculated based on its field classification scheme are indeed reliable (Bornmann, 2018).

A large-scale comparison of blue ball multidisciplinary bibliographic data sources, including Dimensions and Scopus, was carried out recently by Visser et al.

They used Scopus as the baseline for comparing and analyzing not just the different coverage of documents over time by document type and discipline but also the completeness and accuracy of the citation links. The results of this comparison shed light on the different no indications of documents covered by Dimensions but not by Scopus.

These are basically meeting abstracts and other short items that do not seem to make a very substantial contribution to science.

The authors concluded that differences between data sources should be assessed in accordance with the purpose for which the data sources are used.

For example, it may be desirable to work within a more restricted universe of documents, such as a specific thematic field or a specific level of aggregation. This is the case with the study of Huang et al. The present communication extends previous comparisons of Scopus by expanding the study set to include distinct levels video aggregation (by country and by institution) across a larger selection of characteristics and measures.

The SCImago group annually receives a raw data copy in XML format through a contract with Elsevier. In 2018, Digital Science published the Dimensions database with scientific publications and citations, grants, patents, and clinical trials (Hook et al.

Since then, there has been characterization published of it (Bornmann, phyllanthus niruri Harzing, 2019; Visser et al. In the present study, we shall only consider the scientific publications. Bibliographic databases often give what does clomid do to you studies problems with author affiliations which usually do what does clomid do to you include standardized names of institutions.



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