Thorsten Wetzenstein Lange Nacht der aufgeschobenen Hausarbeiten am Kiel University Library Search strategies beyond Google

Transcription

1 Thorsten Wetzenstein Lange Nacht der aufgeschobenen Hausarbeiten am Kiel University Library Search strategies beyond Google Abstract: A quite impressing fact is that google scholar's index has an extensively large size of about 160 million entries1. If google scholar does index as many items in how far does it represent the whole number of scholarly items available? In google scholar you can search for items in a simple way and get large lists back2. However, doing queries in google scholar is fine but adding special databases of libraries to your web search will give it more power. After spending this night at your library you will probably feel easier finding topic-related documents. How do you realize it all? Come along and let's see what libraries can do for you. Google scholar (start in November 2004) index size : 200 million in 2016 index bias: journal articles special features: indexing at full-text level, ranking, citation indexing earliest work found: Histoire des Sevarambes (1677) in an edition printed in 1700 earliest citation found: Icones avium omnium, quae in historia avium Conradi Gesner (1560) Documentation google books (start in 2004), project designed in 2002 index size: 15 million index bias: digitized scholarly books special features: indexing at full-text level, ranking, indexed words are put through to ngram viewer cooperating libraries: universities: Michigan, Stanford, Harvard, Bodleian (Oxford) / Bavarian State Library (Germany) New York Public Library earliest digitized book found: Cardon: Guidonis Vanninii,... Carminum libri quatuor. H. Cardon, 1411 experience made and conclusions drawn: experiment: how to connect an institutional repository to google and google scholar? 1 Google Scholar offers the widest coverage, situated on approximately 160 million hits on May [2], p.53 2 The estimate of the total size of the academic web was probably undersized: the summation of Google Scholar and Microsoft Academic Search is still far from representing the total academic web space, though it undoubtedly makes up a very high percentage. [1], p. 7

2 MACAU Kiel University open-accesss institutional repository URL: contains 3856 open-access publications types of publications: PhD theses, journal articles, book chapters, books, conference objects etc. Do you think any IR is completely indexed by google and by google scholar? Prior to indexation in google, the IR needs to be registered in google webmaster tools. Bielefeld Academic Search Engine BASE URL: URL: BASE: 100,183,705 items currently Sources: < Start: June 2004 content from Open-Access Repositores worldwide zvdd Zentralverzeichnis digitalisierter Drucke URL: central register of printed works from 15th century up to today digitized in Germany 1,496,075 items (books, journals, newspapers) Europeana 54,227,378 items artworks, videos, paintings, films, books and sounds from Europe More than 2,000 institutions contribute to Europeana Online-Contents (*) index size: 43.2 million articles from over 27,900 journals start: from 1993 year of publication onwards

3 IBZ(*) IBZ Online (Internationale Bibliographie der geistes- und sozialwissenschaftlichen Zeitschriftenliteratur) International Bibliography of Periodical Literature (IBZ), International Bibliography of the Social Sciences URL: index: over 11,500 journals 4.1 Million journal articles 120,000 new entries each year contains bibliographic information as well as abstracts for 200,000 articles start IBZ online: 1983 start IBZ print: 1896 DBIS Datenbank-Infosystem (DBIS) URL: rzblx10.uni-regensburg.de/dbinfo/fachliste.php? 11,476 entries 4729 free data bases in the internet law: beck online medicine: pubmed environmental studies: UFORDAT economics: business source premier online contents. and many more Directory of Open Access Journals (DOAJ) URL: 9,388 journals 128 countries 2,434,227 articles journal storage JSTOR

4 Karlsruher Virtueller Katalog free online meta catalog URL: content: 70 international bibliographic databases operation: KVK queries are executed simultaneously contains: ZVDD, Europeana, google books, BASE no data base on its own APIS (application programming interface ) List of useful APIS example 1 Topic: earth science / geo science earthquake U.S. Geological Survey

5 example 2 astronomy / space science

6 [1] Orduña-Malea, E.; Ayllón, J.M.; Martín-Martín, A.; Delgado López-Cózar, E. (2014). About the size of Google Scholar: playing the numbers. Granada: EC3 Working Papers, 18: 23 July 2014 [2] Martín-Martín, A.; Orduna-Malea, E.; Ayllón, J.M. & Delgado López-Cózar, E. (2016). The counting house: measuring those who count. Presence of Bibliometrics, Scientometrics, Informetrics, Webometrics and Altmetrics in the Google Scholar Citations, ResearcherID, ResearchGate, Mendeley & Twitter. EC3 Working Papers, th of January pages, 12 tables, 35 figures. This is for making your query session more efficient and pleasant Enabling your browser for sending queries to several search engines rather than making queries to search engines one after another: Installing search plugins to your webbrowser: let's do it for BASE