Abstract & Indexing

The Advances in Science, Technology and Engineering Systems Journal is indexed or abstracted by the following:

  • Thomson Reuters Researcherid (Click Here)
  • Crossref DOI (Click Here)
  • Directory of Open Access Journals (DOAJ) (Click Here)
  • Index Copernicus Value (Click Here) (ICV 2016: 61.95)
  • Genamics JournalSeek (Click Here)
  • Google Scholar (Click Here)
  • WorldCat Discovery Services (Click Here)
  • Publons (Click Here)
  • Applied Science and Technology Source
  • CNKI Scholar
  • J-Gate Portal
  • Primo Central Index
  • Technology and Management (TEMA Database)
  • The Summon Service

Impact Factor

Several journal metrics are calculated. The first metric is an alternative impact factor which is based on Google Scholar’s citation count.

The journal impact factor (JIF) normally referred to is the proprietary journal impact factor from Thomson Reuters calculated based on the Web of Science (WOS) and published in the Journal Citation Reports® (JCR). We call this the JCR®JIF. DOAJ writes: “There is only one official, universally recognized impact factor that is generated by Thomson Reuters; it is a proprietary measure run by a profit making organisation. It runs against the ethics and principles of open access.” This journal has no JCR®JIF, but an alternative Google-based impact factor.

Today 80% of readers find their way to ASTESJ’s articles via Google Scholar. No open or proprietary database is directing so many readers to ASTESJ’s articles. Google Scholar is the only openly available database suitable for journal metric calculation. It has a wide coverage and is a meaningful source. For this reason, ASTESJ is calculating its own Impact Factor based on Google Scholar’s citation counts. Scientists are used to Thomson Reuters’ way of calculating an impact factor. For this reason, ASTESJ applies Thomson Reuters'(TR) algorithm as published on http://wokinfo.com/essays/impact-factor in Figure 1. This algorithm is not protected and can be used by anyone. In short: ASTESJ calculates a 2-year Google-based Journal Impact Factor (2-GJIF).

With respect to all articles from this journal for the respective year:
A = 2018 cites to articles published in 2016-2017 = 198
B = number of articles published in 2016-17 = 175
2-GJIF for 2018 = C = A/B = 198/175 = 1.13 (TR algorithm, Google citations, data February 2018)

An impact factors for e.g. 2016-17 can only be published once this year is over (e.g. in 2018). At Thomson Reuters this is done when all 2016-17 publications have been processed. Once published, the JCR®JIF for a given year is fixed. In contrast, a GJIF has never a fixed value. Depending on individual activities on the Internet (self-archiving and Green Open Access), some articles published Closed Access in one year may appear online only months or even years later. This has an influence on Google Scholar’s citation count and makes it necessary to state the 2-GJIF for a given year always with the date the data was retrieved from Google Scholar. ASTESJ may provide updates of the 2-GJIF during the year.

= 2018 self-citations to articles published in 2016-17 = 15
Self-Cited Rate = D/A = 15/198 = 7.5 % (definition Rousseau 1999, data February 2018)

Journal self-citations are citations to articles in the same journal. A Self-Cited Rate below 20 % is considered acceptable. A higher Self-Cited Rate than this could be explained by a journal’s novel or highly specific topic, but could also reveal a journal with excessive self-citations.

Please interpret the 2-GJIF with caution:

  • Due to differences in the underlying database, the value calculated here for the 2-GJIF can not be compared with a JCR®2-JIF.
  • Do not compare journals from different subject fields based on their JIF. Journals in fundamental subject fields tend to have higher impact factors than journals in specialized or applied subject fields.
  • Journal metrics should not be used to assess individual authors. Please refer instead to our article metrics provided for each paper: Number of citations from Google Scholar and number of citations from CrossRef.

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