Wednesday, 2 January 2013



What is Impact Factor
Impact factor is a measure of the frequency with which the "average article" published in a given scholarly journal has been cited in a particular year or period and is often used to measure or describe the importance of a particular journal to its field. The Thomson-Reuters (formerly Institute for Scientific Information (ISI)) ranks, evaluates, and compares journals within subject categories and publishes the results in Journal Citation Reports.  The new rankings come out in the Spring, for the previous year's journals.  Three years worth of data are required to calculate a Journal Impact Factor.
The formula to determine the 2007 impact factor for a journal would be calculated as follows:
A = the number of times articles published in the journal during 2006-7 were cited by other journals during 2008
B = the number of articles or reviews that were published in the journal during 2006-7
2007 Impact factor for a journal = A/B
  
list of impact factor journals


eg for 2013 Indo American Journal of Pharmaceutical Research 0.85 www.iajpr.com (Pharma)

Journal Names
2006  cited
Impact Factor
Immed. Index
Articles
Half-life
CELL ONCOL         
2391
3.089
0.5
62
8.2
CELL PHYSIOL BIOCHEM
148
2.979
0.357
14
2.1
CELL PROLIFERAT    
1115
3.558
0.206
63
3.8
CELL RES           
912
4.492
0.356
45
3.9
CELL SIGNAL        
1157
3.426
0.545
101
2.4
CELL STRESS CHAPERON
4590
4.887
1.213
225
4.1
CELL STRUCT FUNCT  
1195
3.097
0.25
40
5.1
CELL TISSUE RES    
1120
2.143
1.5
4
6.8
EXP HEAT TRANSFER  
2441
1.112
0.235
153
6.8
EXP MOL MED        
157
0.361
0.1
20
8.5
EXP NEUROL         
965
2.296
0.265
83
3.6
EXP TECHNIQUES     
13008
4.156
0.889
316
6.9
EXP THERM FLUID SCI
162
0.274
0.133
45
5.4
EXP THERM FLUID SCI
1178
0.894
0.075
80
6.9
EXPERT OPIN BIOL TH
1178
0.894
0.075
80
6.9
EXPERT REV MED DEVIC
1405
2.705
0.385
104
2.8
EXPERT REV PROTEOMIC
81
0.791
0.141
64
     
EXPERT SYST APPL   
350
2.991
0.581
31
1.8
EXTREMOPHILES      
884
0.957
0.123
162
4.4
FARADAY DISCUSS    
999
1.921
0.164
67
5.1
FASEB J            
4045
4.731
2.766
47
99.9
FATIGUE FRACT ENG M
30621
6.721
1.241
449
5.8
FEBS J             
1387
0.756
0.097
93
7.7
FEBS LETT          
1879
3.033
0.463
467
1.4
FEMS IMMUNOL MED MIC
53127
3.372
0.589
1068
7.7
FEMS MICROBIOL ECOL
2626
2.281
0.34
156
5.2
FEMS MICROBIOL LETT
4812
3.157
0.489
186
5.3
FEMS MICROBIOL REV 
13243
2.068
0.344
485
6.7
IEE P-ELECT POW APPL
1127
0.927
0.047
85
7.2
IEE P-GENER TRANSM D
609
0.29
0.036
110
8.3
IEE P-MICROW ANTEN P
819
0.293
0.011
91
8.3
IEE P-OPTOELECTRON 
686
0.572
0.033
91
9
IEE P-SCI MEAS TECH
544
0.632
0.035
57
8
IEE P-VIS IMAGE SIGN
476
0.461
0.081
37
99.9
IEE REV            
382
0.461
0.04
101
6.2
IEEE ACM T COMPUT BI
57
0.126
0
17
     
IEEE ACM T NETWORK 
121
2.283
0.389
36
2.2
IEEE AERO EL SYS MAG
3614
1.789
0.131
107
7.4
IEEE ANTENN PROPAG M
172
0.423
0
78
4.4
IEEE CIRCUITS DEVICE
847
0.873
0.169
59
6.2
IEEE COMMUN MAG    
241
1.22
0.067
15
5.7
IEEE ELECTR DEVICE L
3691
1.678
0.224
165
5.2
IEEE ELECTR INSUL M
5233
2.716
0.5
278
4.9
IEEE ENG MED BIOL  
199
0.612
0
22
6.4
IEEE IND APPL MAG  
1095
0.94
0.067
60
6.8
IEEE INSTRU MEAS MAG
181
0.238
0.023
43
5.5
IEEE INTELL SYST   
127
0.327
0.051
39
4.9
IEEE J OCEANIC ENG 
1120
2.413
0.176
68
5.1
IEEE J QUANTUM ELECT
1106
1.259
0.391
46
6.7
IEEE J QUANTUM ELECT
10005
2.262
0.48
150
99.9
IEEE J SEL AREA COMM
10005
2.262
0.48
150
99.9
IEEE J SEL TOP QUANT
6813
1.816
0.209
235
6.9
IEEE J SOLID-ST CIRC
4712
2.842
0.191
188
5.3
IEEE MICROW MAG    
7148
2.002
0.234
290
6.8
IEEE MICROW WIREL CO
210
1.357
0.167
30
4
IEEE NETWORK       
1428
1.424
0.159
226
3
IEEE PERVAS COMPUT 
1135
2.211
0.057
35
6.2
IEEE PHOTONIC TECH L
447
2.062
0.093
43
3.5
IEEE PHOTONIC TECH L
13528
2.353
0.461
868
4.5
IEEE SENS J        
13528
2.353
0.461
868
4.5
IEEE SENS J        
834
1.117
0.135
223
3.3
IEEE SIGNAL PROC LET
834
1.117
0.135
223
3.3
IEEE SIGNAL PROC MAG
1367
0.722
0.039
181
5.1
IEEE SPECTRUM      
1466
2.655
1.212
52
5.4
IEEE T ADV PACKAGING
728
0.84
0.279
61
6.5
IEEE T AERO ELEC SYS
763
1.443
0.106
94
4.8
IEEE T ANTENN PROPAG
2316
0.836
0.233
86
99.9
IEEE T APPL SUPERCON
9487
1.48
0.245
477
9.9
IEEE T APPL SUPERCON
3096
0.717
1.654
26
4
IEEE T AUDIO SPEECH
3096
0.717
1.654
26
4
IEEE T AUTOMAT CONTR
29

0.136
198
     
IEEE T BIO-MED ENG 
15573
2.772
0.156
256
99.9
IEEE T BROADCAST   
7328
2.302
0.233
309
8.6
IEEE T CIRC SYST VID
514
1.235
0.304
69
4.1
IEEE T CIRCUITS-I  
3406
1.743
0.146
144
5.7
IEEE T CIRCUITS-II 
3751
1.139
0.103
263
6.1
IEEE T COMMUN      
1773
0.922
0.059
287
7.1
IEEE T COMPON PACK T
8270
1.208
0.147
258
9.2
IEEE T COMPUT      
1070
0.816
0.055
109
5.9
IEEE T COMPUT AID D
5518
1.426
0.243
140
99.9
IEEE T CONSUM ELECTR
2357
0.838
0.077
234
8
IEEE T CONTR SYST T
1184
0.727
0.081
211
5.2
IEEE T DEVICE MAT RE
1580
1.211
0.148
115
6
IEEE T DEVICE MAT RE
309
1.373
0.068
73
2.4
IEEE T DIELECT EL IN
309
1.373
0.068
73
2.4
IEEE T DIELECT EL IN
1228
0.771
0.087
160
6.3
IEEE T EDUC        
1228
0.771
0.087
160
6.3
IEEE T ELECTROMAGN C
393
0.362
0.019
54
6.8
IEEE T ELECTRON DEV
968
0.77
0.173
98
8.5
IEEE T ELECTRON DEV
10251
2.052
0.34
423
7.7
IEEE T ELECTRON PACK
10251
2.052
0.34
423
7.7
IEEE T ENERGY CONVER
311
1
0.111
36
4.7
IEEE T ENG MANAGE  
1246
0.716
0.066
106
7.6
IEEE T FUZZY SYST  
800
0.825
0.22
41
9.2
IEEE T GEOSCI REMOTE
2579
1.803
0.085
71
6.9
IEEE T IMAGE PROCESS
7698
1.752
1.055
343
6.7
IEEE T IND APPL    
7045
2.715
0.307
322
6.7
IEEE T IND ELECTRON
3663
0.611
0.068
161
9.5
IEEE T IND INFORM  
2175
0.59
0.05
200
6.9
IEEE T INFORM THEORY
36
0.923
0.4
30
     
IEEE T INSTRUM MEAS
14149
1.938
0.398
452
8.8
IEEE T INTELL TRANSP
2461
0.572
0.074
299
7.6
IEEE T KNOWL DATA EN
327
1.434
0.163
49
4
IEEE T MAGN        
2125
2.063
0.159
126
5.5
IEEE T MAGN        
10422
0.938
0.151
910
7.3
IEEE T MED IMAGING 
10422
0.938
0.151
910
7.3
IEEE T MICROW THEORY
7766
3.757
0.532
141
6.7
IEEE T NANOBIOSCI  
10815
2.027
0.265
529
7.8
IEEE T NANOTECHNOL 
316
2.592
0.162
37
2.7
IEEE T NANOTECHNOL 
713
1.909
0.207
111
3
IEEE T NEUR SYS REH
713
1.909
0.207
111
3
IEEE T NEURAL NETWOR
627
1.842
0.221
68
3.4
IEEE T NUCL SCI    
6167
2.62
0.28
150
7.5
IEEE T PARALL DISTR
8582
1.497
0.2
606
6.8
IEEE T PATTERN ANAL
1669
1.246
0.112
116
6.9
IEEE T PLASMA SCI  
14708
4.306
0.489
182
9.2
IEEE T POWER DELIVER
3821
1.144
0.179
329
6.5
IEEE T POWER ELECTR
2692
0.496
0.066
274
9
IEEE T POWER SYST  
2169
1.029
0.049
204
7
IEEE T RELIAB      
4094
0.922
0.066
228
8.2
IEEE T SEMICONDUCT M
1297
0.8
0.033
61
99.9
IEEE T SEMICONDUCT M
852
0.785
0.115
52
7.2
IEEE T SIGNAL PROCES
852
0.785
0.115
52
7.2
IEEE T SOFTWARE ENG
8390
1.57
0.203
434
7.5
IEEE T SPEECH AUDI P
3203
2.132
0.158
57
99.9
IEEE T ULTRASON FERR
1687
1.006

0
6.6
IEEE T VEH TECHNOL 
4384
1.729
0.245
261
6.9
IEEE T VLSI SYST   
2783
1.071
0.103
174
7.7
IEEE T WIREL COMMUN
1027
0.771
0.052
134
5.6
IEEE TECHNOL SOC MAG
1383
1.184
0.077
427
2.9
IEEE WIREL COMMUN  
53
0.512
0.05
20
     
IEEE-ASME T MECH   
574
2.577
0.05
60
3.1
IEICE T COMMUN     
798
0.979
0.074
81
5.3
IEICE T ELECTRON   
1046
0.29
0.041
489
4.3
IEICE T FUND ELECTR
1102
0.508
0.05
298
4.6
IETE J RES         
1132
0.312
0.049
508
4.8
IETE TECH REV      
19
0.05
0
25
     
IIE TRANS          
26
0.023
0
12
     
IMAGE VISION COMPUT
1839
0.637
0.058
86
99.9
IMMUNITY           
1770
1.171
0.093
118
6.4
IMMUNOBIOLOGY      
22744
18.306
3.556
133
5.8
IMMUNOGENETICS     
1401
1.867
0.24
75
7.1
IMMUNOL ALLERGY CLIN
3896
2.852
0.491
106
6.7
IMMUNOL CELL BIOL  
487
3.178
0.163
43
3.1
IMMUNOL INVEST     
1827
2.482
0.567
67
5.5
IMMUNOL LETT       
490
1.276
0
26
8.9
IMMUNOL RES        
3336
2.352
0.529
157
4.7
IMMUNOL REV        
1115
2.342
0.035
57
5.3
IMMUNOLOGY         
8489
10.758
1.508
118
5
IMMUNOPHARM IMMUNOT
7992
3.674
0.52
175
8
IN VITRO CELL DEV-AN
461
0.654
0.107
56
7
IN VITRO CELL DEV-PL
1102
0.735
0.04
50
7.5
IND ENG CHEM RES   
734
0.607
0
80
5.5
IND LUBR TRIBOL    
16523
1.518
0.258
1067
6.4
IND ROBOT          
74
0.444
0.25
32
     
INDIAN J BIOCHEM BIO
111
0.278
0.045
44
4.7
INDIAN J CHEM A    
486
0.277
0.055
55
99.9
INDIAN J CHEM B    
2092
0.631
0.168
167
9.8
INDIAN J CHEM TECHN
2660
0.491
0.049
283
99.9
INDIAN J CHEM TECHN
313
0.301
0.021
95
6.3
INDIAN J ENG MATER S
313
0.301
0.021
95
6.3
INDIAN J HETEROCY CH
123
0.277
0.028
72
4
INDIAN J MED RES   
385
0.254
0.046
130
5.8
INDIAN J PHYS      
1621
1.224
0.342
117
99.9
INDIAN J PURE AP PHY
425
0.195
0.024
124
9.4
INDOOR AIR         
809
0.38
0.045
154
99.9
INDO AMERICAN JOURNAL OF PHARMACEUTICAL RESEARCH
1100
0.85
0.5
102
5.1
INFECT DIS CLIN N AM
198
0.535
0.2
65
3.6
INFECT IMMUN       
1453
1.642
0.091
44
7
INFIN DIMENS ANAL QU
47906
4.004
0.645
819
7
INFLAMM RES        
520
0.634
0.079
38
9.7
INFLAMMATION       
2032
1.485
0.109
119
5.9
INFORM MIDEM       
844
0.761

0
9.6
INFRARED PHYS TECHN
23
0.066
0
22
     
ING HIDRAUL MEX    
793
0.97
0.186
70
8.2
ING QUIM           
58
0.225
0.049
41
     
INORG CHEM         
39
0.125
0.053
19
     
INORG CHEM COMMUN  
58002
3.911
0.699
1443
8.4
INORG CHIM ACTA    
3248
1.787
0.29
335
3.5
INORG REACT MECH   
12777
1.674
0.433
631
7.9
INSECT BIOCHEM MOLEC
130
0.8
0.125
16
6.2
INSECT MOL BIOL    
3746
2.711
0.464
97
6.3
INSTRUM EXP TECH+  
1850
2.639
0.463
82
5.4
INSTRUM SCI TECHNOL
621
0.329
0.086
140
8
INT ARCH ALLERGY IMM
202
0.518
0.037
54
4.6
INT BIODETER BIODEGR
4497
2.524
0.269
145
7.2
INT GAS ENG MANAGE 
1217
1.619
0.092
76
6.5
INT IMMUNOL        
7
0.029
0
46
     
ISA T               
8
0.064
0
44
     
ISOKINET EXERC SCI 
217
0.3
0.062
48
6.5
ISOT ENVIRON HEALT S
132
0.222
0
30
6.9
ISR J CHEM         
240
0.952
0.226
31
4.4
ISR J ZOOL         
1093
1.174
0.125
24
99.9
ISSUES SCI TECHNOL 
318
0.4

     
99.9
ITAL J ZOOL        
167
0.43
0.179
28
5.6
ITE J              
353
0.857
0.068
44
6.2
IUBMB LIFE         
129
0.132
0.021
47
8.6
J ADHES SCI TECHNOL
1460
2.316
0.253
83
4.6
J ADHESION         
1343
0.868
0.068
117
7.5
J ADV OXID TECHNOL 
935
1.046
0.113
53
99.9
J ADV TRANSPORT    
185
0.85
0.054
37
7.4
J AEROSOL SCI      
102
0.731
0
16
7.8
J AEROSPACE ENG    
4040
2.952
0.272
125
8.4
J AGR BIOL ENVIR ST
151
0.478
0.037
27
6.9
J AGR FOOD CHEM    
328
0.85
0
18
6.4
J AIR WASTE MANAGE 
37636
2.322
0.341
1459
6
J AIRCRAFT         
3106
1.441
0.286
161
6.9
J ALLERGY CLIN IMMUN
1658
0.456
0.066
243
9.5
J ALLOY COMPD      
26391
8.829
1.79
338
5.4
J ALZHEIMERS DIS   
13994
1.25
0.204
1217
5.3
J AM ASSOC LAB ANIM
974
3.058
0.532
62
3.2
J AM CHEM SOC      
8

0.093
75
     
J VAC SCI TECHNOL B
7388
1.394
0.199
366
8.6
J VAC SCI TECHNOL B
10633
1.597
0.268
589
6.7
J VESTIBUL RES-EQUIL
10633
1.597
0.268
589
6.7
J VIB ACOUST       
604
1.057
0
7
8.8