The importance of google among search engines

Published online Mar This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. With regard to variety of documents presented on the internet, search engines are one of the most effective search tools for finding information.

The importance of google among search engines

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

The importance of google among search engines

With regard to variety of documents presented on the internet, search engines are one of the most effective search tools for finding information. Objectives The aim of this study is to evaluate the three criteria, recall, preciseness and importance of the four search engines which are PubMed, Science Direct, Google Scholar and federated search of Iranian National Medical Digital Library in addiction prevention and treatment to select the most effective search engine for offering the best literature research.

Materials and Methods This research was a cross-sectional study by which four popular search engines in medical sciences were evaluated. To select keywords, medical subject heading Mesh was used. We entered given keywords in the search engines and after searching, 10 first entries were evaluated.

Direct observation was used as a mean for data collection and they were analyzed by descriptive statistics number, percent number and mean and inferential statistics, One way analysis of variance ANOVA and post hoc Tukey in Spss.

Results Results have shown that the search engines had different operations with regard to the evaluated criteria. Since P Value was 0. PubMed, Science Direct and Google Scholar were the best in recall, preciseness and importance respectively.

The importance of google among search engines

Developing new technologies, scholars have faced abundant variety of collection literature research review with regard to subject of presentation and information space. Literature search review is one of the most important search stages. Web, a huge resource of data plays an important role as an information reference for scholars.

Nowadays, the rate of network data growth caused inaccessibility of information that is more worse than lacking them 3.

With the creation and development of internet network as the greatest, the most varied and the most widespread information resource, simultaneous and various types of search tools are appeared to help users find information they want, these tools include search engines, meta-search engines and subject directories 4.

Information retrieval is a challenge for users since search tools are too complex to navigate 5. As one of the most effective searching tools, its role is distinct because those search engines use software facilities which can find information from different sites for users.

This growth is as a result of discussing about addiction as a national, regional and multi-dimensional problem. The volume of produced information and up to date personal data necessitates to study hours in a day, even a small part of this subject.

Therefore, persuading to use internet is essential for updating data literature review. Then we concluded that the mentioned four popular search engines in medical sciences include: He concludes that all in all, Scopus was the most effective search engine in the literature research ,in case of requiring only an overview of the topic, even for a widespread and in depth investigation in area of life sciences and closely related topics, PubMed was more appropriate.

Google Scholar, Science Direct are the best in preciseness and importance criterion in laser medicine 7. Hence, use of multiple search tools is recommended 8. According to researches, PubMed was more efficient and better than Google Scholar with regard to the patient's searches and educational purposes 9.

Background

In research by Flagas et al. Results showed that all databases were practical and offered numerous search facilities.The very popular search engine called Google was invented by computer scientists Larry Page and Sergey Brin. The site was named after a googol -- the name for the number 1 followed by zeros -- found in the book " Mathematics and the Imagination " by Edward Kasner and James Newman.

Google states that: “Google Search uses breadcrumb markup in the body of a web page to categorize the information from the page in search results.” Mobile Optimized: With more than half of all searches done from mobile devices, Google wants to see that your site is optimized for mobile users.

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without the words. where my words occur. anywhere in the article. in the title of the article. Return articles authored by. e.g., "PJ Hayes" or McCarthy. Return articles published in.

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