5. The Institute for Scientific
Information® (ISI®
Since it was first defined by Garfield in 1979, the use of the impact
factor
(IF) of scientific journals as an indication of research performance and
quality
has been discussed extensively. Impact factors of a selected set of
approximately
5,000 of the world’s leading journals in a broad range of disciplines are
published yearly by the Institute for Scientific Information (ISI) of
Philadelphia,
in the Journal Citation Reports (JCR)
سنة كارفيلد قبل من االستشهاد معامل اكتشاف منذ1979لتقييم استخدامه تم
من اكثر هناك وحاليا المجالت5000التابعة اي اس االي في مسجلة عالمية مجلة
راوتر ثومسون لمؤسسة
Dr. Aziz Ibrahim Abdulla /
aziz_914@yahoo.com
6. Impact factor in 2012=No. of Citation for Articles in 2011and2010 / No. of Articles in
2011and2010
Dr. Aziz Ibrahim Abdulla /
aziz_914@yahoo.com
8. البحوث هذه من
1-SOME MISUSES OF JOURNAL IMPACT FACTOR IN
RESEARCH EVALUATION, Jesús Rey-Rocha1, M. José
Martín-Sempere2, Jesús Martínez-Frías, and
Fernando
2-Is the journal impact factor a valid indicator
of scientific value? Oh H C, Lim J F Y,
Singapore Med J 2009; 50(8) : 749
3-IMPACT FACTORS: USE AND ABUSE, M. Amin
& M. Mabe , Elsevier
Dr. Aziz Ibrahim Abdulla / aziz_914@yahoo.com
10. االستشهاد معامل مساوئ
Journal Impact Factor can not be calculated for new journals. I mean “the impact
factor of a
journal is calculated by dividing the number of current year citations to the source
items
published in that journal during the previous two years”, hence impact factor can be
calculated
after completing the minimum of 3 years of publication.
Journal Impact Factor will be a quotient factor only and will not be a quality
factor.
Journal Impact Factor will not be related to quality of content and quality of
peer review, it
is only a measure of the frequency with which the "average article" in a journal has
been cited in
a particular year or period.
Journal which publishes more review articles will get highest impact factors.
Dr. Aziz Ibrahim Abdulla / aziz_914@yahoo.com
11. H-Index
االستشهاد نوعية االستشهاد معامل الى يضيف معامل هو
االستشهاد كمية وليس
للمجالت ويعتمد
لالشخاص يستخدم الغالب وفي
ببحوث االستشهاد تزايد على حسابه طريقة في يعتمد
االستشهادات عدد حسب بحوثه تسلسل مع معين شخص
متزايد استشهاد ذات الشخص بحوث ان على يدل وبذلك
االستشهاد لمعامل االخرى المشاكل اليحل ولكنه
قبل من اقتراحه تم وقد
Jorge E. Hirsch, a physicist at UCSD
Dr. Aziz Ibrahim Abdulla / aziz_914@yahoo.com
37. Co-Citation Proximity Index (CPI)
المتشابه المشترك االسشتهاد مؤشر وتعني
مباشرة بالمصدرين االستشهاد تم اذا كبيرا ويكون
بمصدر االستشهاد تم اذا يقل وهكذا فاصلة بدون
يقل وهكذا البحث من فقرة بعد الثاني بالمصدر ثم
وهكذا صفحة بعد كان اذا
Dr. Aziz Ibrahim Abdulla /
aziz_914@yahoo.com
38. Howard White introduced author co-citation
analysis in 1981.[10] Gipp and Beel
proposedCo-citation Proximity Analysis
(CPA) and introduced the CPI as an
enhancement to the original co-citation
concept in 2009.[4] Co-citation Proximity
Analysis considers the proximity of citations
within the full-texts for similarity computation
and therefore allows for a more fine-grained
assessment of semantic document similarity
using co-citation.
Dr. Aziz Ibrahim Abdulla /
aziz_914@yahoo.com