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Impact Factors Journal, Institutional and Authors; H-Index, G-index, i10 index
• The Impact Factor (IF) or Journal Impact Factor (JIF) of an academic journal is an index.
•The impact factor was devised by Eugene Garfield, the founder of the institute for scientific information.
• That reflects the yearly average number of citations.
• That articles published in the last two years in a given journal received. .
• Journals with higher impact factors are often deemed to be more important than those with lower ones.
• It is dynamic index presented by Digit.
Impact Factory = citations Y-1 + citation Y-2
publication Y-1 + publication Y-2
Journal can have impact factors only in 3rd year after its publication stats.
Impact Factor 2019 = citations 2018 + citations 2017
publication 2018 + publication 2017
Citation 2017. 2018
50. 60
Publication. 10. 25
Impact Factor 2019 = 60+50
25+10
= 110
35
= 3.14
Journal
Journal is a book of prime entry оr а book of original entry in which transactions are first recorded in a chronological order.
Characteristics
1. Day to Day transactions are recorded in a journal in chronological order.
2. It is a book of original entry in which transactions are written before they are posted in the ledger account.
3. It records both transaction Debitor credit.
4. If records complete details of transaction in one entry.
5. This is a so process of recording transaction in the journal.
H-index (2005/Jorge E. Hirsch)
The h-inder is short for the Hirsch Index, which was introduced by Jorge E. Hirsch in 2005 as away to quantify the productivity and impact of an individual author. Similar to how the IF is now be used to measure a journal or an author to their scientific field, the h-index has become another measure of relative impact of scientific publication.
While the IF is derived from the quotient of total citations and total papers in a two year span, the h-index is simply a count of the largest number of papers (h) from a journal or author that have at least (h) number of citations.
Tools to calculate h-index.
1. Google scholar
2. Web of Science
3. Scopus
H-index Calulate system
Publication Citation
P-1 26
P-2 12
P-3 06
P-4. 11
P-5. 02
P-6. 29
P-7. 14
P-8. 11
P-9. 07
P-10. 15
Arranged by Rank
Rank. Citation. Publication
1. 29. P6
2. 26. P1
3. 15. P10
4. 14. P7
5. 12. P2
6. 11. P4
7. 11. P8
8. 07. P9
9. 06. P3
10. 02. P5
H-index = 7 Rank and citation equal and up, rank 8 citation 7 not allowed
G - index (2006 Leo Egghe)
The g-indx is an author level metric suggested in 2006 by Leo Egghe. As an improvement on h-index.
The g-index is the unique largest number such that the top g articlers received together at least g2 citations.
formula
Rank (r) Citations (c) c. r2
1. 29. 29. 01
2. 26. (29+26). 55. 04
3. 15. (55+15). 70. 09
4. 14. (70+14). 84. 16
5. 12. (84+12). 96. 25
6. 11. (96+11). 107. 36
7. 11. (107+11). 118. 49
8. 09. (118+09). 127. 64
9. 07. (127+07). 134. 81
10. 06. (134+06). 140. 100
11. 04. (140+04). 144. 121
12. 02. (144+02). 146. 144
up down
g-index=12
i10-index
The i10-index is the newest in the line of journal metrics and was introduced by Google Scholar in 2011. It is a simple and straightforward indexing measure found by tallying a journal's total number of published papers with at least 10 citations (Google Scholar Blog, 2011). My citation in Google Scholar is free and easy to use. Used only in Google Scholar.
Rank Citations. Publication
1. 29. P-6
2. 26. P-1
3. 15. P-10
4. 14. P-7
5. 12 P-2
6. 11. P-4
7. 11. P-8
8. 09. P-11
9. 07. P-9
10. 06. P-3
11. 04. P-11
12. 02. P-5
Citation always 10 up, no down
i10 index = 7
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