Document (#33736)

Author

Liang, L.
Rousseau, R.

Title

Yield sequences as journal attractivity indicators : "payback times" for Science and Nature

Source

Journal of documentation. 64(2008) no.2, S.229-245

Year

2008

Abstract

Purpose - The yield period of a journal is defined as the time needed to accumulate the same number of citations as the number of references included during the period of study. Yield sequences are proposed as journal attractivity indicators describing dynamic characteristics of a journal. This paper aims to investigate their use. Design/methodology/approach - As a case study the yield sequences of the journals Nature and Science from 1955 onward are determined. Similarities and dissimilarities between these sequences are discussed and factors affecting yield periods are determined. Findings - The study finds that yield sequences make dynamic aspects of a journal visible, as reflected through citations. Exceptional circumstances (here the publication of Laemmli's paper in 1970 in the journal Nature) become clearly visible. The average number of references per article, the citation distribution and the size of the database used to collect citations are factors influencing yield sequences. Originality/value - A new dynamic indicator for the study of journals is introduced.

Theme

Informetrie

Object

Science
Nature

Similar documents (author)

1. Egghe, L.; Liang, L.; Rousseau, R.: ¬A relation between h-index and impact factor in the power-law model (2009) 4.26

   4.2626324 = sum of:
     4.2626324 = sum of:
       1.7635715 = weight(author_txt:rousseau in 757) [ClassicSimilarity], result of:
         1.7635715 = score(doc=757,freq=1.0), product of:
           0.6211731 = queryWeight, product of:
             7.570929 = idf(docFreq=60, maxDocs=43556)
             0.08204714 = queryNorm
           2.8390985 = fieldWeight in 757, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.570929 = idf(docFreq=60, maxDocs=43556)
             0.375 = fieldNorm(doc=757)
       2.4990609 = weight(author_txt:liang in 757) [ClassicSimilarity], result of:
         2.4990609 = score(doc=757,freq=1.0), product of:
           0.78367347 = queryWeight, product of:
             1.1232108 = boost
             8.503749 = idf(docFreq=23, maxDocs=43556)
             0.08204714 = queryNorm
           3.1889057 = fieldWeight in 757, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.503749 = idf(docFreq=23, maxDocs=43556)
             0.375 = fieldNorm(doc=757)
   

2. Egghe, L.; Liang, L.; Rousseau, R.: Fundamental properties of rhythm sequences (2008) 4.26

   4.2626324 = sum of:
     4.2626324 = sum of:
       1.7635715 = weight(author_txt:rousseau in 3963) [ClassicSimilarity], result of:
         1.7635715 = score(doc=3963,freq=1.0), product of:
           0.6211731 = queryWeight, product of:
             7.570929 = idf(docFreq=60, maxDocs=43556)
             0.08204714 = queryNorm
           2.8390985 = fieldWeight in 3963, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.570929 = idf(docFreq=60, maxDocs=43556)
             0.375 = fieldNorm(doc=3963)
       2.4990609 = weight(author_txt:liang in 3963) [ClassicSimilarity], result of:
         2.4990609 = score(doc=3963,freq=1.0), product of:
           0.78367347 = queryWeight, product of:
             1.1232108 = boost
             8.503749 = idf(docFreq=23, maxDocs=43556)
             0.08204714 = queryNorm
           3.1889057 = fieldWeight in 3963, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.503749 = idf(docFreq=23, maxDocs=43556)
             0.375 = fieldNorm(doc=3963)
   

3. Liang, D.F.: Mathematical journals : an annotated guide (1992) 2.08

   2.0825508 = sum of:
     2.0825508 = product of:
       4.1651015 = sum of:
         4.1651015 = weight(author_txt:liang in 245) [ClassicSimilarity], result of:
           4.1651015 = score(doc=245,freq=1.0), product of:
             0.78367347 = queryWeight, product of:
               1.1232108 = boost
               8.503749 = idf(docFreq=23, maxDocs=43556)
               0.08204714 = queryNorm
             5.314843 = fieldWeight in 245, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.503749 = idf(docFreq=23, maxDocs=43556)
               0.625 = fieldNorm(doc=245)
       0.5 = coord(1/2)
   

4. Liang, L.: R-Sequences : relative indicators for the rhythm of science (2005) 2.08

   2.0825508 = sum of:
     2.0825508 = product of:
       4.1651015 = sum of:
         4.1651015 = weight(author_txt:liang in 4875) [ClassicSimilarity], result of:
           4.1651015 = score(doc=4875,freq=1.0), product of:
             0.78367347 = queryWeight, product of:
               1.1232108 = boost
               8.503749 = idf(docFreq=23, maxDocs=43556)
               0.08204714 = queryNorm
             5.314843 = fieldWeight in 4875, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.503749 = idf(docFreq=23, maxDocs=43556)
               0.625 = fieldNorm(doc=4875)
       0.5 = coord(1/2)
   

5. Liang, T.-Y.: ¬The basic entity model : a fundamental theoretical model of information and information processing (1994) 1.67

   1.6660405 = sum of:
     1.6660405 = product of:
       3.332081 = sum of:
         3.332081 = weight(author_txt:liang in 465) [ClassicSimilarity], result of:
           3.332081 = score(doc=465,freq=1.0), product of:
             0.78367347 = queryWeight, product of:
               1.1232108 = boost
               8.503749 = idf(docFreq=23, maxDocs=43556)
               0.08204714 = queryNorm
             4.2518744 = fieldWeight in 465, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.503749 = idf(docFreq=23, maxDocs=43556)
               0.5 = fieldNorm(doc=465)
       0.5 = coord(1/2)
   

Similar documents (content)

1. Campanario, J.M.: Self-citations that contribute to the journal impact factor : an investment-benefit-yield analysis (2010) 0.28

   0.2789583 = sum of:
     0.2789583 = product of:
       1.1623262 = sum of:
         0.01476076 = weight(abstract_txt:science in 1122) [ClassicSimilarity], result of:
           0.01476076 = score(doc=1122,freq=1.0), product of:
             0.048623297 = queryWeight, product of:
               1.0854014 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.011528685 = queryNorm
             0.30357382 = fieldWeight in 1122, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.078125 = fieldNorm(doc=1122)
         0.059704944 = weight(abstract_txt:journals in 1122) [ClassicSimilarity], result of:
           0.059704944 = score(doc=1122,freq=3.0), product of:
             0.085586466 = queryWeight, product of:
               1.4400272 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.011528685 = queryNorm
             0.697598 = fieldWeight in 1122, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.078125 = fieldNorm(doc=1122)
         0.029029708 = weight(abstract_txt:study in 1122) [ClassicSimilarity], result of:
           0.029029708 = score(doc=1122,freq=2.0), product of:
             0.076325044 = queryWeight, product of:
               1.9231657 = boost
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.011528685 = queryNorm
             0.38034317 = fieldWeight in 1122, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.078125 = fieldNorm(doc=1122)
         0.1294985 = weight(abstract_txt:citations in 1122) [ClassicSimilarity], result of:
           0.1294985 = score(doc=1122,freq=5.0), product of:
             0.13845931 = queryWeight, product of:
               2.2432356 = boost
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.011528685 = queryNorm
             0.935282 = fieldWeight in 1122, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.078125 = fieldNorm(doc=1122)
         0.25460956 = weight(abstract_txt:journal in 1122) [ClassicSimilarity], result of:
           0.25460956 = score(doc=1122,freq=6.0), product of:
             0.25763908 = queryWeight, product of:
               4.327476 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.011528685 = queryNorm
             0.9882412 = fieldWeight in 1122, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.078125 = fieldNorm(doc=1122)
         0.67472273 = weight(abstract_txt:yield in 1122) [ClassicSimilarity], result of:
           0.67472273 = score(doc=1122,freq=4.0), product of:
             0.5945543 = queryWeight, product of:
               7.1006474 = boost
               7.2629623 = idf(docFreq=82, maxDocs=43556)
               0.011528685 = queryNorm
             1.1348379 = fieldWeight in 1122, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               7.2629623 = idf(docFreq=82, maxDocs=43556)
               0.078125 = fieldNorm(doc=1122)
       0.24 = coord(6/25)
   

2. Didegah, F.; Thelwall, M.: Determinants of research citation impact in nanoscience and nanotechnology (2013) 0.20

   0.20172259 = sum of:
     0.20172259 = product of:
       0.5603405 = sum of:
         0.04617401 = weight(abstract_txt:periods in 2735) [ClassicSimilarity], result of:
           0.04617401 = score(doc=2735,freq=1.0), product of:
             0.08254555 = queryWeight, product of:
               7.160014 = idf(docFreq=91, maxDocs=43556)
               0.011528685 = queryNorm
             0.5593761 = fieldWeight in 2735, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.160014 = idf(docFreq=91, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.01476076 = weight(abstract_txt:science in 2735) [ClassicSimilarity], result of:
           0.01476076 = score(doc=2735,freq=1.0), product of:
             0.048623297 = queryWeight, product of:
               1.0854014 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.011528685 = queryNorm
             0.30357382 = fieldWeight in 2735, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.059704944 = weight(abstract_txt:journals in 2735) [ClassicSimilarity], result of:
           0.059704944 = score(doc=2735,freq=3.0), product of:
             0.085586466 = queryWeight, product of:
               1.4400272 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.011528685 = queryNorm
             0.697598 = fieldWeight in 2735, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.098652355 = weight(abstract_txt:references in 2735) [ClassicSimilarity], result of:
           0.098652355 = score(doc=2735,freq=5.0), product of:
             0.10089126 = queryWeight, product of:
               1.5634894 = boost
               5.5973034 = idf(docFreq=438, maxDocs=43556)
               0.011528685 = queryNorm
             0.9778087 = fieldWeight in 2735, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.5973034 = idf(docFreq=438, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.045116086 = weight(abstract_txt:period in 2735) [ClassicSimilarity], result of:
           0.045116086 = score(doc=2735,freq=1.0), product of:
             0.10240619 = queryWeight, product of:
               1.575184 = boost
               5.6391697 = idf(docFreq=420, maxDocs=43556)
               0.011528685 = queryNorm
             0.44056013 = fieldWeight in 2735, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6391697 = idf(docFreq=420, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.03745565 = weight(abstract_txt:number in 2735) [ClassicSimilarity], result of:
           0.03745565 = score(doc=2735,freq=2.0), product of:
             0.082187146 = queryWeight, product of:
               1.7282866 = boost
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.011528685 = queryNorm
             0.45573607 = fieldWeight in 2735, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.020527106 = weight(abstract_txt:study in 2735) [ClassicSimilarity], result of:
           0.020527106 = score(doc=2735,freq=1.0), product of:
             0.076325044 = queryWeight, product of:
               1.9231657 = boost
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.011528685 = queryNorm
             0.26894325 = fieldWeight in 2735, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.057913486 = weight(abstract_txt:citations in 2735) [ClassicSimilarity], result of:
           0.057913486 = score(doc=2735,freq=1.0), product of:
             0.13845931 = queryWeight, product of:
               2.2432356 = boost
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.011528685 = queryNorm
             0.4182708 = fieldWeight in 2735, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
         0.18003614 = weight(abstract_txt:journal in 2735) [ClassicSimilarity], result of:
           0.18003614 = score(doc=2735,freq=3.0), product of:
             0.25763908 = queryWeight, product of:
               4.327476 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.011528685 = queryNorm
             0.69879204 = fieldWeight in 2735, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.078125 = fieldNorm(doc=2735)
       0.36 = coord(9/25)
   

3. Nebelong-Bonnevie, E.; Frandsen, T.F.: Journal citation identity and journal citation image : a portrait of the Journal of Documentation (2006) 0.19

   0.19387306 = sum of:
     0.19387306 = product of:
       0.6058533 = sum of:
         0.03899911 = weight(abstract_txt:journals in 584) [ClassicSimilarity], result of:
           0.03899911 = score(doc=584,freq=2.0), product of:
             0.085586466 = queryWeight, product of:
               1.4400272 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.011528685 = queryNorm
             0.45566913 = fieldWeight in 584, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.03529494 = weight(abstract_txt:references in 584) [ClassicSimilarity], result of:
           0.03529494 = score(doc=584,freq=1.0), product of:
             0.10089126 = queryWeight, product of:
               1.5634894 = boost
               5.5973034 = idf(docFreq=438, maxDocs=43556)
               0.011528685 = queryNorm
             0.34983146 = fieldWeight in 584, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5973034 = idf(docFreq=438, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.089166 = weight(abstract_txt:indicators in 584) [ClassicSimilarity], result of:
           0.089166 = score(doc=584,freq=4.0), product of:
             0.11789394 = queryWeight, product of:
               1.6901059 = boost
               6.050591 = idf(docFreq=278, maxDocs=43556)
               0.011528685 = queryNorm
             0.7563239 = fieldWeight in 584, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.050591 = idf(docFreq=278, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.021188114 = weight(abstract_txt:number in 584) [ClassicSimilarity], result of:
           0.021188114 = score(doc=584,freq=1.0), product of:
             0.082187146 = queryWeight, product of:
               1.7282866 = boost
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.011528685 = queryNorm
             0.25780326 = fieldWeight in 584, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.023223767 = weight(abstract_txt:study in 584) [ClassicSimilarity], result of:
           0.023223767 = score(doc=584,freq=2.0), product of:
             0.076325044 = queryWeight, product of:
               1.9231657 = boost
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.011528685 = queryNorm
             0.30427453 = fieldWeight in 584, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.0756217 = weight(abstract_txt:visible in 584) [ClassicSimilarity], result of:
           0.0756217 = score(doc=584,freq=1.0), product of:
             0.16767806 = queryWeight, product of:
               2.015609 = boost
               7.2158947 = idf(docFreq=86, maxDocs=43556)
               0.011528685 = queryNorm
             0.45099342 = fieldWeight in 584, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2158947 = idf(docFreq=86, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.03430185 = weight(abstract_txt:nature in 584) [ClassicSimilarity], result of:
           0.03430185 = score(doc=584,freq=1.0), product of:
             0.11331501 = queryWeight, product of:
               2.0293527 = boost
               4.8433976 = idf(docFreq=932, maxDocs=43556)
               0.011528685 = queryNorm
             0.30271235 = fieldWeight in 584, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8433976 = idf(docFreq=932, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
         0.28805783 = weight(abstract_txt:journal in 584) [ClassicSimilarity], result of:
           0.28805783 = score(doc=584,freq=12.0), product of:
             0.25763908 = queryWeight, product of:
               4.327476 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.011528685 = queryNorm
             1.1180673 = fieldWeight in 584, product of:
               3.4641016 = tf(freq=12.0), with freq of:
                 12.0 = termFreq=12.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.0625 = fieldNorm(doc=584)
       0.32 = coord(8/25)
   

4. Vinkler, P.: Characterization of the impact of sets of scientific papers : the Garfield (impact) Factor (2004) 0.18

   0.17828223 = sum of:
     0.17828223 = product of:
       0.557132 = sum of:
         0.03509906 = weight(abstract_txt:factors in 3225) [ClassicSimilarity], result of:
           0.03509906 = score(doc=3225,freq=2.0), product of:
             0.0797809 = queryWeight, product of:
               1.3903292 = boost
               4.9773884 = idf(docFreq=815, maxDocs=43556)
               0.011528685 = queryNorm
             0.43994313 = fieldWeight in 3225, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.9773884 = idf(docFreq=815, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.07799822 = weight(abstract_txt:journals in 3225) [ClassicSimilarity], result of:
           0.07799822 = score(doc=3225,freq=8.0), product of:
             0.085586466 = queryWeight, product of:
               1.4400272 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.011528685 = queryNorm
             0.91133827 = fieldWeight in 3225, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.03529494 = weight(abstract_txt:references in 3225) [ClassicSimilarity], result of:
           0.03529494 = score(doc=3225,freq=1.0), product of:
             0.10089126 = queryWeight, product of:
               1.5634894 = boost
               5.5973034 = idf(docFreq=438, maxDocs=43556)
               0.011528685 = queryNorm
             0.34983146 = fieldWeight in 3225, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5973034 = idf(docFreq=438, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.05104302 = weight(abstract_txt:period in 3225) [ClassicSimilarity], result of:
           0.05104302 = score(doc=3225,freq=2.0), product of:
             0.10240619 = queryWeight, product of:
               1.575184 = boost
               5.6391697 = idf(docFreq=420, maxDocs=43556)
               0.011528685 = queryNorm
             0.49843687 = fieldWeight in 3225, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.6391697 = idf(docFreq=420, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.089166 = weight(abstract_txt:indicators in 3225) [ClassicSimilarity], result of:
           0.089166 = score(doc=3225,freq=4.0), product of:
             0.11789394 = queryWeight, product of:
               1.6901059 = boost
               6.050591 = idf(docFreq=278, maxDocs=43556)
               0.011528685 = queryNorm
             0.7563239 = fieldWeight in 3225, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.050591 = idf(docFreq=278, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.03669889 = weight(abstract_txt:number in 3225) [ClassicSimilarity], result of:
           0.03669889 = score(doc=3225,freq=3.0), product of:
             0.082187146 = queryWeight, product of:
               1.7282866 = boost
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.011528685 = queryNorm
             0.44652835 = fieldWeight in 3225, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.06552163 = weight(abstract_txt:citations in 3225) [ClassicSimilarity], result of:
           0.06552163 = score(doc=3225,freq=2.0), product of:
             0.13845931 = queryWeight, product of:
               2.2432356 = boost
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.011528685 = queryNorm
             0.47321936 = fieldWeight in 3225, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
         0.16631027 = weight(abstract_txt:journal in 3225) [ClassicSimilarity], result of:
           0.16631027 = score(doc=3225,freq=4.0), product of:
             0.25763908 = queryWeight, product of:
               4.327476 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.011528685 = queryNorm
             0.64551646 = fieldWeight in 3225, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.0625 = fieldNorm(doc=3225)
       0.32 = coord(8/25)
   

5. Schloegl, C.; Gorraiz, J.: Global usage versus global citation metrics : the case of pharmacology journals (2011) 0.18

   0.17541088 = sum of:
     0.17541088 = product of:
       0.48725244 = sum of:
         0.010332532 = weight(abstract_txt:science in 1139) [ClassicSimilarity], result of:
           0.010332532 = score(doc=1139,freq=1.0), product of:
             0.048623297 = queryWeight, product of:
               1.0854014 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.011528685 = queryNorm
             0.21250167 = fieldWeight in 1139, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.021716436 = weight(abstract_txt:factors in 1139) [ClassicSimilarity], result of:
           0.021716436 = score(doc=1139,freq=1.0), product of:
             0.0797809 = queryWeight, product of:
               1.3903292 = boost
               4.9773884 = idf(docFreq=815, maxDocs=43556)
               0.011528685 = queryNorm
             0.27220094 = fieldWeight in 1139, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9773884 = idf(docFreq=815, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.06384057 = weight(abstract_txt:journals in 1139) [ClassicSimilarity], result of:
           0.06384057 = score(doc=1139,freq=7.0), product of:
             0.085586466 = queryWeight, product of:
               1.4400272 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.011528685 = queryNorm
             0.745919 = fieldWeight in 1139, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.03158126 = weight(abstract_txt:period in 1139) [ClassicSimilarity], result of:
           0.03158126 = score(doc=1139,freq=1.0), product of:
             0.10240619 = queryWeight, product of:
               1.575184 = boost
               5.6391697 = idf(docFreq=420, maxDocs=43556)
               0.011528685 = queryNorm
             0.3083921 = fieldWeight in 1139, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6391697 = idf(docFreq=420, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.06756752 = weight(abstract_txt:indicators in 1139) [ClassicSimilarity], result of:
           0.06756752 = score(doc=1139,freq=3.0), product of:
             0.11789394 = queryWeight, product of:
               1.6901059 = boost
               6.050591 = idf(docFreq=278, maxDocs=43556)
               0.011528685 = queryNorm
             0.5731212 = fieldWeight in 1139, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.050591 = idf(docFreq=278, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.0185396 = weight(abstract_txt:number in 1139) [ClassicSimilarity], result of:
           0.0185396 = score(doc=1139,freq=1.0), product of:
             0.082187146 = queryWeight, product of:
               1.7282866 = boost
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.011528685 = queryNorm
             0.22557786 = fieldWeight in 1139, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.124852 = idf(docFreq=1913, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.014368973 = weight(abstract_txt:study in 1139) [ClassicSimilarity], result of:
           0.014368973 = score(doc=1139,freq=1.0), product of:
             0.076325044 = queryWeight, product of:
               1.9231657 = boost
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.011528685 = queryNorm
             0.18826026 = fieldWeight in 1139, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4424734 = idf(docFreq=3786, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.08107888 = weight(abstract_txt:citations in 1139) [ClassicSimilarity], result of:
           0.08107888 = score(doc=1139,freq=4.0), product of:
             0.13845931 = queryWeight, product of:
               2.2432356 = boost
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.011528685 = queryNorm
             0.5855791 = fieldWeight in 1139, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.353866 = idf(docFreq=559, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
         0.17822668 = weight(abstract_txt:journal in 1139) [ClassicSimilarity], result of:
           0.17822668 = score(doc=1139,freq=6.0), product of:
             0.25763908 = queryWeight, product of:
               4.327476 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.011528685 = queryNorm
             0.6917688 = fieldWeight in 1139, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.0546875 = fieldNorm(doc=1139)
       0.36 = coord(9/25)