Fig.1.Document type of AITSH, CPRI, and ICAR-NIANP The study focused categorization of research publications of all the three institutes during the period 2006-2019. AIISH registered “Article Type” which is highest with 138 (91.39%) followed by “Proceedings Paper” with 9 (5.96%), and “Review” with 4 (2.64%). CPRI has registered the highest number of papers in “Proceedings Paper” as 187 (51.23%), followed by “Article Type” with 176 (48.21%), the other type of documents are very less in number. ICAR-NIANP registered the highest number with “Article Type” as 352 (92.14%), followed by “Review” as 19 (4.97%), “Meeting Abstract as 6 (1.57%) & “Proceedings Paper” as 3 (0.78%) and so on. Table.2. Year-wise publications Fig.2. Year-wise publications of AITISH, CPRI, and ICAR-NIANP Table.4. Top 20 productive authors of AITSH Fig.3.VOSviewer co-authorship network visualization of AITSH NP: Number of Papers, TC: Total Citations, PY: Publication Year Table.5. Top 20 productive authors of CPRI NP: Number of Papers, TC: Total Citations, PY: Publication Year Table.6. indicates the top 20 productive authors of ICAR-NIANP based on the number of publications. “Nandi S” has published 56 articles and gained 1“ position followed by Ravindra, JP, Sejian, V., and Selvaraju, S. with 55 articles placed 2™4 position and Gupta, PSP., produced 50 articles and reached 3" position. Ravindra, JP., has published 55 articles received 666 citations, followed by Selvaraju, S., with 55 articles and gained 661 citations. Nandi, S., with 56 articles received 565 citations. Ravindra, JP., with H-index 15 stands 1* position followed by Nandi, S., Selvaraju, S., with H-index 14 stands 2™ position and Gupta, PSP., with H-index 12 stands 3 position. Further, the table has produced g-index and m-index of the authors. Fig.5.VOSviewer co-authorship network visualization of ICAR-NIANP NP: Number of Papers, TC: Total Citations, PY: Publication Year Table.7. Top 10 highly cited papers TESTING OF LOTKA’S LAW OF SCIENTIFIC PRODUCTIVITY Lotka’s law is one of the laws of bibliometrics which will enable us to find out the frequency distribution of authors on scientific productivity. (Lotka 1926) coined a law; it states that the number of authors making ‘n’ publications is approximately equal to 1/n” of the number of authors that produce only one paper. i.e., in a given field, about 60% of authors out of one hundred will have one paper each, 15% will have two papers each, 7% will have 3 papers each, and so on. Lotka's Law is defined as follows: AIISH published 151 articles (438 authors) during the period 2006-2019. Table.13. provides the academics’ observed value 1.e,176 (73.94%) authors who made one article. 27 (11.34%) authors who published two articles, 20 (8.4%) authors who contributed three articles, and so on. As per Lotka’s law, there will be 27 (12.5%) authors who produced two articles, 9 (4.16%) authors who brought out three articles, 2 (0.92%) authors who produced five articles. Hence, the study non- confirms Lotka’s law of scientific productivity. Table 14: Lotka's law of scientific productivity of CPRI
