Document (#35334)

Author
Visscher, A. de
Title
¬An index to measure a scientist's specific impact
Source
Journal of the American Society for Information Science and Technology. 61(2010) no.2, S.319-328
Year
2010
Abstract
The specific impact index, or s-index, is introduced as a measure of a scientist's projected impact per paper. The index is complementary to other indices that measure overall impact as it can distinguish between authors maximizing the quantity of their output and authors maximizing the quality of their output. It also can be used to monitor career progress. The main advantage of the new index is that it reduces age bias from older papers that have more time to accumulate citations than do more recent papers. The index was tested on 24 scientists in different fields and of different statures. The overall projected impact estimated from the index correlates well with Hirsch's h-index squared (r**2=0.99). The impact of different aging models was evaluated as well.
Theme
Informetrie
Object
h-index

Similar documents (content)

  1. Schreiber, M.: ¬An empirical investigation of the g-index for 26 physicists in comparison with the h-index, the A-index, and the R-index (2008) 0.30
    0.297596 = sum of:
      0.297596 = product of:
        0.8266555 = sum of:
          0.008230933 = weight(abstract_txt:that in 3969) [ClassicSimilarity], result of:
            0.008230933 = score(doc=3969,freq=2.0), product of:
              0.03872265 = queryWeight, product of:
                1.0086248 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.015964173 = queryNorm
              0.2125612 = fieldWeight in 3969, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.07785669 = weight(abstract_txt:indices in 3969) [ClassicSimilarity], result of:
            0.07785669 = score(doc=3969,freq=2.0), product of:
              0.12008513 = queryWeight, product of:
                1.0254892 = boost
                7.335196 = idf(docFreq=74, maxDocs=42306)
                0.015964173 = queryNorm
              0.6483458 = fieldWeight in 3969, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.335196 = idf(docFreq=74, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.017049065 = weight(abstract_txt:well in 3969) [ClassicSimilarity], result of:
            0.017049065 = score(doc=3969,freq=1.0), product of:
              0.06925412 = queryWeight, product of:
                1.1013473 = boost
                3.9388995 = idf(docFreq=2238, maxDocs=42306)
                0.015964173 = queryNorm
              0.24618122 = fieldWeight in 3969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9388995 = idf(docFreq=2238, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.05891412 = weight(abstract_txt:papers in 3969) [ClassicSimilarity], result of:
            0.05891412 = score(doc=3969,freq=2.0), product of:
              0.12563622 = queryWeight, product of:
                1.4834023 = boost
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.015964173 = queryNorm
              0.46892625 = fieldWeight in 3969, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.030081548 = weight(abstract_txt:different in 3969) [ClassicSimilarity], result of:
            0.030081548 = score(doc=3969,freq=2.0), product of:
              0.091875374 = queryWeight, product of:
                1.5536268 = boost
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.015964173 = queryNorm
              0.32741687 = fieldWeight in 3969, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.058439318 = weight(abstract_txt:output in 3969) [ClassicSimilarity], result of:
            0.058439318 = score(doc=3969,freq=1.0), product of:
              0.1574401 = queryWeight, product of:
                1.6605775 = boost
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.015964173 = queryNorm
              0.37118447 = fieldWeight in 3969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.067298114 = weight(abstract_txt:measure in 3969) [ClassicSimilarity], result of:
            0.067298114 = score(doc=3969,freq=1.0), product of:
              0.19800566 = queryWeight, product of:
                2.2807932 = boost
                5.438076 = idf(docFreq=499, maxDocs=42306)
                0.015964173 = queryNorm
              0.33987975 = fieldWeight in 3969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.438076 = idf(docFreq=499, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.19535689 = weight(abstract_txt:scientist's in 3969) [ClassicSimilarity], result of:
            0.19535689 = score(doc=3969,freq=1.0), product of:
              0.3519906 = queryWeight, product of:
                2.4829445 = boost
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.015964173 = queryNorm
              0.55500597 = fieldWeight in 3969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
          0.3134288 = weight(abstract_txt:index in 3969) [ClassicSimilarity], result of:
            0.3134288 = score(doc=3969,freq=7.0), product of:
              0.40030578 = queryWeight, product of:
                5.295749 = boost
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.015964173 = queryNorm
              0.78297347 = fieldWeight in 3969, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.0625 = fieldNorm(doc=3969)
        0.36 = coord(9/25)
    
  2. Bornmann, L.; Mutz, R.; Daniel, H.D.: Do we need the h index and its variants in addition to standard bibliometric measures? (2009) 0.29
    0.28899285 = sum of:
      0.28899285 = product of:
        0.8027579 = sum of:
          0.010185259 = weight(abstract_txt:that in 681) [ClassicSimilarity], result of:
            0.010185259 = score(doc=681,freq=4.0), product of:
              0.03872265 = queryWeight, product of:
                1.0086248 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.015964173 = queryNorm
              0.26303107 = fieldWeight in 681, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.117995284 = weight(abstract_txt:indices in 681) [ClassicSimilarity], result of:
            0.117995284 = score(doc=681,freq=6.0), product of:
              0.12008513 = queryWeight, product of:
                1.0254892 = boost
                7.335196 = idf(docFreq=74, maxDocs=42306)
                0.015964173 = queryNorm
              0.982597 = fieldWeight in 681, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                7.335196 = idf(docFreq=74, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.0149179315 = weight(abstract_txt:well in 681) [ClassicSimilarity], result of:
            0.0149179315 = score(doc=681,freq=1.0), product of:
              0.06925412 = queryWeight, product of:
                1.1013473 = boost
                3.9388995 = idf(docFreq=2238, maxDocs=42306)
                0.015964173 = queryNorm
              0.21540856 = fieldWeight in 681, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9388995 = idf(docFreq=2238, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.07290251 = weight(abstract_txt:papers in 681) [ClassicSimilarity], result of:
            0.07290251 = score(doc=681,freq=4.0), product of:
              0.12563622 = queryWeight, product of:
                1.4834023 = boost
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.015964173 = queryNorm
              0.58026665 = fieldWeight in 681, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.018612007 = weight(abstract_txt:different in 681) [ClassicSimilarity], result of:
            0.018612007 = score(doc=681,freq=1.0), product of:
              0.091875374 = queryWeight, product of:
                1.5536268 = boost
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.015964173 = queryNorm
              0.20257884 = fieldWeight in 681, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.07231497 = weight(abstract_txt:output in 681) [ClassicSimilarity], result of:
            0.07231497 = score(doc=681,freq=2.0), product of:
              0.1574401 = queryWeight, product of:
                1.6605775 = boost
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.015964173 = queryNorm
              0.45931736 = fieldWeight in 681, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.17093727 = weight(abstract_txt:scientist's in 681) [ClassicSimilarity], result of:
            0.17093727 = score(doc=681,freq=1.0), product of:
              0.3519906 = queryWeight, product of:
                2.4829445 = boost
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.015964173 = queryNorm
              0.4856302 = fieldWeight in 681, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.1453538 = weight(abstract_txt:impact in 681) [ClassicSimilarity], result of:
            0.1453538 = score(doc=681,freq=4.0), product of:
              0.2870414 = queryWeight, product of:
                3.883599 = boost
                4.629816 = idf(docFreq=1121, maxDocs=42306)
                0.015964173 = queryNorm
              0.50638616 = fieldWeight in 681, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.629816 = idf(docFreq=1121, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
          0.17953889 = weight(abstract_txt:index in 681) [ClassicSimilarity], result of:
            0.17953889 = score(doc=681,freq=3.0), product of:
              0.40030578 = queryWeight, product of:
                5.295749 = boost
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.015964173 = queryNorm
              0.4485044 = fieldWeight in 681, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.0546875 = fieldNorm(doc=681)
        0.36 = coord(9/25)
    
  3. Visscher, A. De: What does the g-index really measure? (2011) 0.24
    0.24008608 = sum of:
      0.24008608 = product of:
        1.0003587 = sum of:
          0.01626781 = weight(abstract_txt:that in 3054) [ClassicSimilarity], result of:
            0.01626781 = score(doc=3054,freq=5.0), product of:
              0.03872265 = queryWeight, product of:
                1.0086248 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.015964173 = queryNorm
              0.42011097 = fieldWeight in 3054, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.078125 = fieldNorm(doc=3054)
          0.040170792 = weight(abstract_txt:specific in 3054) [ClassicSimilarity], result of:
            0.040170792 = score(doc=3054,freq=2.0), product of:
              0.083875574 = queryWeight, product of:
                1.2120464 = boost
                4.334808 = idf(docFreq=1506, maxDocs=42306)
                0.015964173 = queryNorm
              0.47893313 = fieldWeight in 3054, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.334808 = idf(docFreq=1506, maxDocs=42306)
                0.078125 = fieldNorm(doc=3054)
          0.08214514 = weight(abstract_txt:overall in 3054) [ClassicSimilarity], result of:
            0.08214514 = score(doc=3054,freq=2.0), product of:
              0.13512939 = queryWeight, product of:
                1.5384252 = boost
                5.5020814 = idf(docFreq=468, maxDocs=42306)
                0.015964173 = queryNorm
              0.60789984 = fieldWeight in 3054, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5020814 = idf(docFreq=468, maxDocs=42306)
                0.078125 = fieldNorm(doc=3054)
          0.16824529 = weight(abstract_txt:measure in 3054) [ClassicSimilarity], result of:
            0.16824529 = score(doc=3054,freq=4.0), product of:
              0.19800566 = queryWeight, product of:
                2.2807932 = boost
                5.438076 = idf(docFreq=499, maxDocs=42306)
                0.015964173 = queryNorm
              0.8496994 = fieldWeight in 3054, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.438076 = idf(docFreq=499, maxDocs=42306)
                0.078125 = fieldNorm(doc=3054)
          0.27469283 = weight(abstract_txt:impact in 3054) [ClassicSimilarity], result of:
            0.27469283 = score(doc=3054,freq=7.0), product of:
              0.2870414 = queryWeight, product of:
                3.883599 = boost
                4.629816 = idf(docFreq=1121, maxDocs=42306)
                0.015964173 = queryNorm
              0.9569799 = fieldWeight in 3054, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.629816 = idf(docFreq=1121, maxDocs=42306)
                0.078125 = fieldNorm(doc=3054)
          0.41883686 = weight(abstract_txt:index in 3054) [ClassicSimilarity], result of:
            0.41883686 = score(doc=3054,freq=8.0), product of:
              0.40030578 = queryWeight, product of:
                5.295749 = boost
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.015964173 = queryNorm
              1.0462923 = fieldWeight in 3054, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.078125 = fieldNorm(doc=3054)
        0.24 = coord(6/25)
    
  4. Schreiber, M.: ¬A case study of the modified Hirsch index hm accounting for multiple coauthors (2009) 0.21
    0.21192577 = sum of:
      0.21192577 = product of:
        0.7568778 = sum of:
          0.0072751855 = weight(abstract_txt:that in 678) [ClassicSimilarity], result of:
            0.0072751855 = score(doc=678,freq=1.0), product of:
              0.03872265 = queryWeight, product of:
                1.0086248 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.015964173 = queryNorm
              0.18787934 = fieldWeight in 678, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
          0.03596366 = weight(abstract_txt:authors in 678) [ClassicSimilarity], result of:
            0.03596366 = score(doc=678,freq=1.0), product of:
              0.098162994 = queryWeight, product of:
                1.3112195 = boost
                4.689494 = idf(docFreq=1056, maxDocs=42306)
                0.015964173 = queryNorm
              0.36636674 = fieldWeight in 678, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.689494 = idf(docFreq=1056, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
          0.07364265 = weight(abstract_txt:papers in 678) [ClassicSimilarity], result of:
            0.07364265 = score(doc=678,freq=2.0), product of:
              0.12563622 = queryWeight, product of:
                1.4834023 = boost
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.015964173 = queryNorm
              0.5861578 = fieldWeight in 678, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
          0.026588583 = weight(abstract_txt:different in 678) [ClassicSimilarity], result of:
            0.026588583 = score(doc=678,freq=1.0), product of:
              0.091875374 = queryWeight, product of:
                1.5536268 = boost
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.015964173 = queryNorm
              0.28939837 = fieldWeight in 678, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
          0.07304915 = weight(abstract_txt:output in 678) [ClassicSimilarity], result of:
            0.07304915 = score(doc=678,freq=1.0), product of:
              0.1574401 = queryWeight, product of:
                1.6605775 = boost
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.015964173 = queryNorm
              0.4639806 = fieldWeight in 678, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
          0.24419612 = weight(abstract_txt:scientist's in 678) [ClassicSimilarity], result of:
            0.24419612 = score(doc=678,freq=1.0), product of:
              0.3519906 = queryWeight, product of:
                2.4829445 = boost
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.015964173 = queryNorm
              0.6937575 = fieldWeight in 678, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
          0.2961624 = weight(abstract_txt:index in 678) [ClassicSimilarity], result of:
            0.2961624 = score(doc=678,freq=4.0), product of:
              0.40030578 = queryWeight, product of:
                5.295749 = boost
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.015964173 = queryNorm
              0.7398404 = fieldWeight in 678, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.078125 = fieldNorm(doc=678)
        0.28 = coord(7/25)
    
  5. Bornmann, L.; Mutz, R.; Daniel, H.-D.: Are there better indices for evaluation purposes than the h index? : a comparison of nine different variants of the h index using data from biomedicine (2008) 0.21
    0.21184823 = sum of:
      0.21184823 = product of:
        0.7566008 = sum of:
          0.011640297 = weight(abstract_txt:that in 3609) [ClassicSimilarity], result of:
            0.011640297 = score(doc=3609,freq=4.0), product of:
              0.03872265 = queryWeight, product of:
                1.0086248 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.015964173 = queryNorm
              0.30060694 = fieldWeight in 3609, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.07785669 = weight(abstract_txt:indices in 3609) [ClassicSimilarity], result of:
            0.07785669 = score(doc=3609,freq=2.0), product of:
              0.12008513 = queryWeight, product of:
                1.0254892 = boost
                7.335196 = idf(docFreq=74, maxDocs=42306)
                0.015964173 = queryNorm
              0.6483458 = fieldWeight in 3609, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.335196 = idf(docFreq=74, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.05891412 = weight(abstract_txt:papers in 3609) [ClassicSimilarity], result of:
            0.05891412 = score(doc=3609,freq=2.0), product of:
              0.12563622 = queryWeight, product of:
                1.4834023 = boost
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.015964173 = queryNorm
              0.46892625 = fieldWeight in 3609, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.305295 = idf(docFreq=570, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.058439318 = weight(abstract_txt:output in 3609) [ClassicSimilarity], result of:
            0.058439318 = score(doc=3609,freq=1.0), product of:
              0.1574401 = queryWeight, product of:
                1.6605775 = boost
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.015964173 = queryNorm
              0.37118447 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9389515 = idf(docFreq=302, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.19535689 = weight(abstract_txt:scientist's in 3609) [ClassicSimilarity], result of:
            0.19535689 = score(doc=3609,freq=1.0), product of:
              0.3519906 = queryWeight, product of:
                2.4829445 = boost
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.015964173 = queryNorm
              0.55500597 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.117463596 = weight(abstract_txt:impact in 3609) [ClassicSimilarity], result of:
            0.117463596 = score(doc=3609,freq=2.0), product of:
              0.2870414 = queryWeight, product of:
                3.883599 = boost
                4.629816 = idf(docFreq=1121, maxDocs=42306)
                0.015964173 = queryNorm
              0.4092218 = fieldWeight in 3609, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.629816 = idf(docFreq=1121, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.23692991 = weight(abstract_txt:index in 3609) [ClassicSimilarity], result of:
            0.23692991 = score(doc=3609,freq=4.0), product of:
              0.40030578 = queryWeight, product of:
                5.295749 = boost
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.015964173 = queryNorm
              0.59187233 = fieldWeight in 3609, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.7349787 = idf(docFreq=1009, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
        0.28 = coord(7/25)