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بسم الله الرحمن الرحيم

بسم الله الرحمن الرحيم. دانشگاه علوم پزشکی شهید بهشتی. Finding and choosing an appropriate journal. دكتر علي اصغر كلاهي دانشیار پزشكي اجتماعي www.ak.sbmu.ac.ir. What is Impact Factor?. Impact Factor is one of the quantitative tools for Journal assessment ISI.

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بسم الله الرحمن الرحيم

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  1. بسم الله الرحمن الرحيم A.A. Kolahi MD

  2. دانشگاه علوم پزشکی شهید بهشتی Finding and choosing an appropriate journal دكتر علي اصغر كلاهي دانشیار پزشكي اجتماعي www.ak.sbmu.ac.ir A.A. Kolahi MD

  3. What is Impact Factor? • Impact Factor is one of the quantitative tools for Journal assessment • ISI A.A. Kolahi MD

  4. Calculation for journal impact factor. • A= total cites in 1992 B= 1992 cites to articles published in 1990-91 (this is a subset of A) C= number of articles published in 1990-91 D= B/C = 1992 impact factor • IFسال 1992 برابر است با مجموع ارجاعات مقالات سال های 1-1990 در سال 1992 تقسیم بر تعداد مقالات چاپ شده در سالهای 1-1990 A.A. Kolahi MD

  5. BMJ 2002 مجموع ارجاعات به مقالات 1-2000 در سال 2002 IF = -------------------------------------------------- تعداد مقالات چاپ شده در سال 1-2000 نکته: A.A. Kolahi MD

  6. History • Eugene Garfield: • I first mentioned the idea of an impact factor in Science in 1955 A.A. Kolahi MD

  7. Usage • Ranking, • Evaluating, • Categorizing, • Comparing journals.  A.A. Kolahi MD

  8. Find Impact Factor • Annually Published • http://www.epidemiologic.org/2006/10/journal-impact-factors-for-2005.html • impact factor of journals by specialty: http://in-cites.com/search.pl (search: journals ranked by impact) • Own journal site • journal citation reports • http://abhayjere.com/impactfactor.aspx • http://impactfactor.weebly.com/ A.A. Kolahi MD

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  15. میانگین تعداد نویسندگان A.A. Kolahi MD

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  19. Limitations of Journal Impact Factors • Journal impact factors are not representative of individual journal articles • Journal impact factors correlate poorly with actual citations of individual articles • Authors use many criteria other than impact when submitting to journals • Potentially manipulateable via self citations • Journals can inflate impact factors by publishing greater proportion of review articles, which are heavily cited • Long articles collect many citations and give high journal impact factors • Short publication lag allows many short term journal self citations and gives a high journal impact factor • Citations in the national language of the journal are preferred by the journal's authors • journal self citation: articles tend to preferentially cite other articles in the same journal • Editorial board coerced self citation: editors may suggestively coerce authors to include and cite additional relevant articles from the same journal as criteria for resubmitting manuscript • Citations to "non-citable" items are erroneously included in the database • Coverage of the database is not complete • Books are not included in the ISI database as a source for citations • Database has an English language bias • The database of included journals may vary over time, causing instability of impact factor values • Research fields with literature that have high rates of citation due to the nature of rapidly updated and outdated study results • Impact factor depends on dynamics (expansion or contraction) of the research field • Small research fields tend to lack journals with high impact • Relations between fields (clinical v basic research, for example) strongly determine the journal impact factor A.A. Kolahi MD

  20. Limitations of Journal Impact Factors • ژورنال معتبر ولی مقاله کم ارزش • تنوع مخاطب و رشته • دسترسی • ژورنال های غیر ISI • مقاله مروری • ارجاع به خود • ارجاعات سالهای بعد • ............... A.A. Kolahi MD

  21. H index • What is H index • www.Scopus.com • Willett, Walter C. =172 • TopH-Index in Iran [86.12.20] A.A. Kolahi MD

  22. تعريف شاخص h يك پژوهشگر عبارت است از h تعداد از مقالات وي كه به هر كدام حداقل  h بار استناد شده باشد. • H-Indexشاخص جديدي از شاخص‌هاي علم‌سنجي است. اين شاخص در سال 2005 ميلادي توسط Jorge E Hirsch در دانشگاه کاليفرنيا ابداع شد. اين شاخص در واقع با هدف ارزيابي کيفي اثر و ارزيابي کمي برون‌داد پژوهشي محققين ابداع شده است. • مفهوم H-Index عبارت است از تعداد مقالات نويسنده که تعداد ارجاعات برابر با h و يا بيشتر از آن دارند. مثلا چنان‌چه H-Index محققي 5 باشد، مفهوم آن اين است که اين محقق حداقل 5 مقاله منتشر شده دارد که هرکدام حداقل 5 استناد يا Citation دارند. به عبارت ديگر مفهوم آن اين است که ساير مقالات اين محقق کمتر از 5 استناد دارند. امروزه اين شاخص معادل Impact Factor براي محققين محسوب مي‌شود. A.A. Kolahi MD

  23. H index • 78 • 12 • 3 • 3 • 2 • 2 • 1 • 1 • 0 • 0 • 0 • 0 A.A. Kolahi MD

  24. Journal Choosing Criteria • Relevancy • Level of your work • History, Well known, Prestige, • Specialty • ISI and Impact Factor) • Indexed PubMed • Indexed in Scopus • Frequency A.A. Kolahi MD

  25. Continue • Accessibility (Open Accessed) • Print or E-journal • Assessment of Iranian authors accepting • Acceptation time • Rejection Rate • On time publication • Country of Publication, • Language of country A.A. Kolahi MD

  26. For this • Go PubMed • Find • Check indexed, Iranian author, open, free, print or e, freq, on time, • Make an excel file • Current Impact Factor • ISI website, IF list or J own website • Chose a appropriate journal • Chose alternative journals A.A. Kolahi MD

  27. Useful Links • www.ak.sbmu.ac.ir • http://www.sbmu.ac.ir/SiteDirectory/Guide/Pages/articleguide.aspx • http://www.sciencewatch.com/dr/sci/11/jan16-11_2/ • http://impactfactor.weebly.com/anaesthesia.html A.A. Kolahi MD

  28. Thank you www.ak.sbmu.ac.ir

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