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Current Limits

This section of the search page allows you to select the following limits and settings.

See also Databases for information about your database product.

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Timespan

Use the Timespan options to specify the time period that you wish to search.

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  • All years – Searches all years in your current subscription. This is the default timespan setting.

  • Latest 5 years – Searches the current year and the last five cover journal publication years. For example, selecting this option would be equivalent to searching publication years from 2008 to 2012.

  • Year to date – Searches the current year -- only records with a cover date of the current year are included in the results.

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  • Latest 4 weeks – Searches the last four weeks of data that we entered in the product database. This may include "early arrivals" or late arrivals" in the results.

  • Latest 2 weeks – Searches the last two weeks of data that we entered in the product database. This may include "early arrivals" or late arrivals" in the results.

  • Latest (current) week – Searches the most recent week of data that we entered in the product database. This may include "early arrivals" or late arrivals" in the results.

Did You Know ... An "early arrival" may be a January item arriving early in November. A "late arrival" may be a December item arriving in February?

Note 1: If you wish to search for journals with a cover date older than 12 months, then we suggest you select the All Years or Latest 5 Years timespan.

Note 2: Take note that the Biological Abstracts product database is updated semi-monthly (24 times per year).

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Adjust Your Search Settings

Lemmatization

The default setting is On. To disable the feature, select Off from the Lemmatization menu.

Keep this setting on if you want the system to search for inflected forms of words in Topic and/or Title searches. Lemmatization allows for a broader scope of functionality and includes synonyms, plurals, and singulars in the search results. For example:

  • mouse finds plural variants such as mouse and mice
  • napkin finds vocabulary variants such as napkin and serviette
  • serfs finds phonological variants such as serfs and serves
  • matrix finds Latin variants such as matrix and matrices
  • defense finds spelling variants such as defense and defence

The product does not apply Lemmatization rules to search terms enclosed in quotation (" ") marks. For example, the query "color" finds records that contain the word color, but not colour.

The product does not apply Lemmatization rules to search terms in which wildcards are used in the query. For example, the query color* finds records that contain the words color, colors, colorful, coloring, and colorants but not colour, colours, colourful, colouring, and colourants. If you want to find all variants of a term, enter both terms using a wildcard separated by the OR operator. For example, color* OR colour* finds all variants of both terms.

See also the Help topic called Synonyms for a list of spelling variations (such as U.S. and U.K. spelling differences) that you can use in Topic and Title searches.

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Note: Left-hand truncation automatically turns off lemmatization. A search for a term such as *valves returns bivalves but not bivalve. Because this occurs, you will not get plural and singular forms of search terms resulting in fewer records. By adding right-hand truncation to your search, the product returns more records. For example, *valve* returns both bivalve and bivalves.

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Note: The product automatically turns off lemmatization if your search query exceeds the number of terms allowed in a search. When you exceed the limit, the product returns only exact matches.

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Search Language

This option is available to customers who have a subscription to Web of Knowledge and the Chinese Science Citation Database.

Select one of the following language options to search for records: Auto Select, English, or Chinese.

Auto Select

This is the default language selection. We recommend this selection to broaden your search results.

Enter search terms in English or Chinese.

Auto Select searches as the Chinese language if a Chinese character is detected anywhere in a search phrase. If no Chinese characters are found, Auto Select searches as the English language.

English

Enter search terms in English. The system searches the Chinese Science Citation Database for records that contain English data and returns results that satisfy your query.

Chinese

Enter search terms in Chinese. The system searches the Chinese Science Citation Database for records that contain Chinese data and returns results that satisfy your query.

See the following topics for more information about the search language.

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Adjust Your Results Settings

Records per page

Select the number of records (10, 25, or 50) to display on the Results page. The default setting is 10 records per page.

Your selection remains for the duration of your search session. If you are logged in, then your selection will apply across all sessions and all subscription databases until you make another selection change or until you log out.

Sort by

Select an option for sorting search results on the Results page. The default setting is Publication Date -- newest to oldest.

Note: Latest Date is the default sort option for users of Derwent Innovations Index.

Refine panel

Options on the Refine Results panel of the Results page allow you to display a ranked list of items extracted from records and to enter a new search to filter or reduce results.

The default setting is Show the Refine Results panel. If you select Hide, the system hides the panel on the Results page. However, a Show Refine tab on the Results page allows you to display the Refine Results panel at anytime.

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Updates to Web of Science

The Web of Science database is updated on a weekly basis as new records arrive and author feedback from ResearcherID comes into the Web of Science product.

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Did You Know ...

The default timespan selection is All Years, which includes "all years" in your current subscription

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Did You Also Know ...

Limits and settings are remembered by the system during a search session. They are also remembered in future sessions, but only if you are a registered user and you sign in.