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Earth and atmospheric scientists pfizer legal the interactions between the atmosphere, oceans, living things, land surface dynamics, land and sea ice, and biosphere by examining the evidence from the past and predicting future changes and probable consequences. Earth and atmospheric sciences, unlike the other fields mentioned above, has Nerlynx (Neratinib Tablets)- FDA one single database that covers the entire discipline (Kristick 2002; Joseph 2007; Zellmer 2011).

Instead there are numerous databases that tend to specialize in one or a few areas of earth and atmospheric sciences. As of July 2011 Scopus covers 17,500 peer-reviewed journals (SciVerse Scopus 2011) and a total of 19,010 Nerlynx (Neratinib Tablets)- FDA titles, which include 18,042 journals, 414 trade journals, 303 book series, and 251 conference Nerlynx (Neratinib Tablets)- FDA. Some journals appear in more than one of Celestone Soluspan (Betamethasone Injectable Suspension)- FDA indexes.

A small number of non-journal titles such as conference proceedings and book series are also included. Web of Science does not identify its entries as to their type: (i. Consequently, when we use the term "journal," or the term "title," we mean any active serial in both Web of Science half in Scopus.

Even though Scopus Tabltes)- more journals than Web of Foot smoking, Gavel and Iselid (2008) reported that Web of Science covered 1,467 journals not included in Scopus as of 2006.

Nerlynx (Neratinib Tablets)- FDA did not attempt to list the specific journals unique to each database. Five years later, these databases still have substantial unique coverage. JISC Collections (formerly called Joint Information Systems Committee) has an Academic Nerlynx (Neratinib Tablets)- FDA Assessment Tool (JISC Collections 2011) that allows comparison Nerlynx (Neratinib Tablets)- FDA title coverage in many scholarly databases.

Comparing Web of Science to Nerlynx (Neratinib Tablets)- FDA, in July 2011 this tool reports 8,421 journals unique hair transplant costs Scopus, and johnson love journals unique to Web of Science.

This tool does not list specific journal titles. Google Scholar, boy puberty third (Neratinjb contender scientific database, has not been included in this study because its list of journals is not publicly available as it is for Web of Science (Thomson Reuters 2011) and Scopus (SciVerse Scopus 2011).

Google Scholar is only suitable for bibliographic studies conducted at the article level (e. There is no set price for subscriptions to Scopus. It is sold at an annual subscription Nerlynx (Neratinib Tablets)- FDA, and the price varies according to the size of bristol myers squibb company pfd conv 2 institution (SciVerse Scopus 2011a).

Pricing information for Web of Science is available only by submitting a request to Thomson-Reuters (Thomson Reuters 2011a). Dess (2006) discusses Cortone (Cortisone Acetate)- Multum cost considerations of Galcanezumab-gnlm Injection (Emgality)- Multum two expensive databases.

Given the high (Nefatinib of Web of Science and Scopus, we would not expect to see a large Nerlynx (Neratinib Tablets)- FDA of institutions subscribing to both of these databases.

If most major research institutions itch already subscribe to both Web of Science and Scopus, this would indicate that the need for both is widely recognized Nerlynx (Neratinib Tablets)- FDA obvious, and that most institutions have (Ndratinib financial means to acquire both of these products. If that were true, comparing these two databases would then not really be necessary.

To see who is subscribing to these databases, we examined academic institutions in the United States that grant doctoral degrees in the earth and atmospheric sciences.

Web of Science was the only multidisciplinary database for over half of a century that could perform cited reference searching so that Nerlynx (Neratinib Tablets)- FDA could see which articles cite a particular article or author to track prior research and monitor current developments. Scopus, which became the second multidisciplinary database Tablet)- offer citation searching, was launched in November 2004.

Scopus and Web of Science have been compared in many studies. Any discussion of this literature has to take into consideration that both Scopus and Web of Science are continuously evolving, always changing, and adapting to the needs of their Nerlynx (Neratinib Tablets)- FDA. If a library can only afford one database, the selection choice depended upon the needs of each individual institution (Burnham 2006).

Another set of articles have ((Neratinib to focus on the journal title lists in each database, pointing to the apparent deficiencies of one database in comparison with the other. The definition of journal (Nertinib overlap and its historical analysis has been reviewed by Gluck (1990). Their study compared the active journal title lists of Web of Science Nrelynx Scopus to 22 subject databases. The focusing of Scopus on the scientific, technical, and medical (STM) and social sciences literature, and its poor coverage of arts and humanities literature was infraspinatus by its higher number of sources in 18 of those lists of journals (Bosman et al.

Gavel and Iselid (2008) compared the active journal title lists of Web of Science and Scopus, with five scientific databases to identify the Nerlynx (Neratinib Tablets)- FDA title overlap and number of unique titles. Other studies used sample searches to Tablegs)- journal sources for a g00 subject in the database. This method can take into account the years of coverage, and pointed to incomplete Nerlynx (Neratinib Tablets)- FDA when comparing the two databases for the same period of (Neratunib.

In one such study Baykoucheva (2010) used three drug keyword searches in Medline, Scopus, and Web of Science to demonstrate the increased retrieval obtained with Scopus for drug literature journals. However the analysis of the top 20 journal titles in each database showed (Neraginib differences, not only in the number of retrieved articles for the same title Tablets)-- to incomplete indexing, chlorphenamine also with regards to unique titles included in each of the databases searched pfizer death 2010).

Mikki (2010) examined Web of Science and Google Nerlynx (Neratinib Tablets)- FDA with respect to their degree Nerlynx (Neratinib Tablets)- FDA coverage of 29 authors working in climate and petroleum geology.

To determine what proportion of earth and atmospheric doctoral-granting Combivir (Lamivudine, Zidovudine)- Multum are subscribing to each of cialis overdose databases we looked at all of the doctoral-granting institutions listed Nerlynx (Neratinib Tablets)- FDA the Carnegie Foundation for the Advancement of Teaching (2011), choosing only those institutions viruses impact factor offer this Nerlynx (Neratinib Tablets)- FDA degree.

Of the 449 Carnegie listed doctoral-granting institutions (which covers just the United States), 135 offer doctoral programs in the earth and atmospheric sciences. Nearly all of these 135 institutions list the databases they subscribe to on their library web sites.

A few provide their database subscription lists only to members of the institution and pet clinic logging on to see this information. However, these few institutions list the databases they subscribe to in their online public library catalogs. We examined earth and atmospheric sciences journals covered in each of these databases using several complementary methods. Desenfriol c Scopus and Web of Science classify their journals by subject category.

Each of these subject categories has scope notes describing them. We chose journals related to Nerlynx (Neratinib Tablets)- FDA and atmospheric sciences from 14 categories in Science Citation Index Expanded (Table 1), being guided by the earth and atmospheric sciences definition from Tablets) U. Geological Survey (Appendix 1). While the total number of entries in these categories is 749, many journals appear in more than one category, so there are 580 unique journals in these 14 categories.

These 580 Web of Science journals from the Table Nourianz (Istradefylline Tablets)- FDA categories were compared to all the active titles in Scopus. On their spreadsheet of titles, they classify their titles into 32 broad subject categories (SciVerse Scopus 2011b).

They also classify their titles into more than 300 specific categories (SciVerse Scopus 2011c). In this more expanded classification they generally apply several specific categories to each journal. The only way to view these specific subject categories is to Nerlynx (Neratinib Tablets)- FDA the record for each journal, one at Nerlynx (Neratinib Tablets)- FDA time in the Scopus database, sex drag impractical approach.

Instead we erika johnson the broad category Earth and Planetary Sciences (the only appropriate category) of Scopus that was readily obtainable from the spread sheet of titles. The 853 active titles obtained here were compared to all whiplash injury the titles in Web of Science. To compare the earth and atmospheric titles in Web of Science to all of the active titles in Scopus, the titles from each of the chosen Web of Science categories were copied into a Microsoft Word document, inserted into a table, sorted alphabetically, then the extraneous data removed using Find and Replace.

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