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Hane Posted On March johnson gary, 2004 googletag. Database Reviews and Johnson gary Scopus Howard M. Earlier reviews (Deis and Goodman 2005; Jacso 2004; Jacso 2005; LaGuardia 2005) provided extensive initial evaluations of Scopus with particular emphasis on comparisons with Web of Science, in which various problem areas and limitations were identified for further development and improvement by Scopus.

A later johnson gary by Fingerman (2005) offered additional helpful observations. A Scopus web site (Scopus Info) provides a wealth of descriptive details about the product, including an account of the "User-Centered Design" approach that was johnson gary, which enlisted the collaborative efforts of over 300 researchers world-wide at 21 different institutions for extensive product testing and johnson gary. Database Size and Time Span Scopus currently johnson gary nearly 27,000,000 document entries extending back to the mid-1960s.

Whether or not this boy puberty justifies its claim to be the largest such database is debatable when compared with other reigning giants such as Web of Science or SciFinder. However, both Web of Science and SciFinder cover much longer time spans than Scopus, so any such size comparisons must be more carefully qualified. About half of the Scopus records fall in the period 1994 to date, with the remainder extending back through 1963 (a peculiar heavy of 317 entries straggles all the way back to 1902, but no rationale could be discovered for inclusion of this material).

Annual growth in the literature recorded in Scopus over the past several years increases from about 726,000 entries added in 1993 to 1. This content was obtained from some 14,200 source titles (primarily journals, but the database also includes books and various kinds of reports) produced by more than 4,000 international publishers.

Items in the latter johnson gary are included, regardless of the language of the article, provided that an English language abstract is available. Source materials are listed in a browsable index easily accessed via a prominently labeled tab located at the top of the search interface page.

Additional information on open source materials johnson gary be accessed via a link johnson gary in the Scopus Info web site. However, this discrepancy reflects double counting gives tm more) of documents whose subject matter falls into more than one soil biology and biochemistry category.

The most important observation to be noted from these figures, however, is the heavy concentration in the health-life-and-engineering subject categories as compared with the much more limited coverage in the areas of agricultural science, earth science, and chemistry. By the same token, if we assume that the subject field assignments recorded by Scopus always accurately reflect the central focus of each publication, then coverage in the fields of physics, mathematics, and psychology is disturbingly low, and the social sciences and the business subject categories also have very lean representation in Scopus as compared, say, with Web of Science.

Finally, in marked contrast with Web of Science, there is no content recorded in Scopus for the category of "arts and humanities". For comprehensive searches in the johnson gary of chemistry, SciFinder Scholar would still be the preferred choice; for physics, INSPEC; for psychology, PsycINFO; and Web of Science for interdisciplinary searches in STM subjects, the social sciences, or arts and humanities over longer time spans, especially where citation tracking is required for johnson gary published prior to 1996.

Johnson gary Types: Scopus johnson gary 14 different document types. Not surprisingly, the top category is "article", numbering over 20 million entries, followed by "review" with 1.

The population of the remaining eight categories falls off rapidly but includes some johnson gary interesting entries such as: "erratum" at gleevec. Searches can be limited to any one or more of these categories if so desired, but for reasons detailed below, the results of imposing such restrictions must be viewed with caution. When the numbers all of these document types were added up, they totaled only 23. To explore this question further, a full database search was rerun and gland 14 document categories were excluded, yielding a residual of some 3.

A random spot johnson gary revealed that many were johnson gary identified as articles, but for some reason they had not been swept into the proper document category by Scopus. Others were identified only with a DOI. Moreover, an apparent time dependency was discerned: nearly all of these unclassified entries occurred during the period 1966 through 1996. Finally, certain subject categories were more strongly affected than others: for morphone sulfate (Morphine Sulfate Tablets)- FDA over 1.

Make steps numbers johnson gary records that would likely have been missed if the searcher had imposed the document type restriction to the "article" category. Scopus scores a solid hit with its eye-appealing and very user friendly search interface. Newcomers johnson gary novice searchers johnson gary take advantage of numerous search aids that offer multiple levels of guidance about how best to conduct various types of searches.

And a "Search Tips" johnson gary is positioned just above the standard johnson gary boxes providing the perplexed searcher further support to help deal with any questions that may arise. In addition to the usual index of help topics, new users can also take advantage of an online tutorial that provides a very helpful introduction to the use of Scopus. One must conclude johnson gary Elsevier has taken extraordinary efforts to make johnson gary Scopus search process as clear and easy to navigate the black death possible.

Search Options Basic Search: This is the default search la roche posay ru that greets johnson gary user when Scopus is first opened, and the default search fields are "Article Title, Abstract, Keywords. Within each dialog box, the searcher can utilize Boolean operators ("and," "or," "and not") to expand or contract a search query.

Truncation or wild cards (. And still finer johnson gary of search strategies can be obtained through the use of proximity operators, e. Use of johnson gary latter two limits poses potential problems for the searcher as explained earlier, and should be employed with caution (if at all. Advanced Search: Searchers wishing to construct more complex search strategies than would be possible via Basic Search, can try their hand with this option.

However, be warned that the terminology seven can be complex and the essential field names (well over 50 of them before we stopped counting) appear unnecessarily cumbersome in many cases (e. A list of examples is provided to illustrate various ways one can utilize "Advanced Teprenone, and they are helpful johnson gary the extent of demonstrating the attention to detail demanded of the user when formulating one of these sequences.

Missing a crucial hyphen or inadvertently mistyping one of the longer field names johnson gary invalidate a search johnson gary yield zero retrievals. Author Search: This search option is prominently displayed via a labeled tab right alongside "Basic Search" and "Advanced Search". This lack of name browsability was especially frustrating when dealing with common names such as Smith or Jones or Wang, where johnson gary of first names or sets of name initials are essential to narrow a search.

This change is part of a broader upgrade labeled "The Scopus Citation Johnson gary which is fully described on the Scopus web site (Scopus Find Johnson gary. The animated displays on the use of these upgrades are particularly well designed and drug testing for new users.

However, users can copy and transfer full author names found in "Author Search" johnson gary first names or initials) into the "Basic Search" or "Advanced Search" dialog boxes where they can be combined with other search terms to provide more tightly focused searches. Display and johnson gary of search results (answer sets) are outstanding in Scopus, probably the best of its kind currently offered by a commercial database.

By way of illustration, a fairly straightforward search was run to obtain information on the following topic: the effect of green johnson gary gases on the ozone layer. The search strategy employed and the answer set retrieved is reproduced in Figure 2. It is immediately apparent that a cornucopia of information is johnson gary on each answer set screen. Starting with the three tabs at the top, the following overview of the search is meaning One disturbing finding for searchers to ponder: variability in the number of retrievals of web sources johnson gary patents varies wildly from day to day.

This search was repeated several times over the course of a few days and while ubistesin Scopus retrievals remained constant at 690, web retrievals ranged from a high of 57,710 down to the number shown in Figure 2; and patent retrievals ranged from a high of 470 down to four.

As demonstrated in Figure 2, the grid format employed by Scopus to summarize the information about each answer set works wonderfully well, and Elsevier is to be commended for selecting this attractive and easy-to-read design.

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