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“AD Scientific Index” (Alper-Doger Scientific Index):

The AD Scientific Index (Alper-Doger Scientific Index), unlike other systems that provide evaluations of journals and universities, is a ranking and analysis system based on the scientific performance and the added value of the scientific productivity of individual scientists. Furthermore, it provides rankings of institutions based on the scientific characteristics of affiliated scientists.

This new index has been developed by Prof. Dr. Murat ALPER (MD) and Associate Prof. Dr. Cihan DÖĞER (MD) by using the total and last 5 years’ values of the i10 index, h-index, and citation scores in Google Scholar.  In addition, the ratio of the last 5 years’ value to the total value of the abovementioned indexes is used. Using a total of nine parameters, the “AD Scientific Index” shows the ranking of an individual scientist by 11 subject (Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law / Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences and Others), 256 branch, 19,300 institution, 216 country, 10 region (Africa, Asia, Europe, North America, Oceania, Arab Leageu, EECA, BRICS, Latin America and COMESA) and in the world. The “AD Scientific Index” is the first and only study that shows the total and the last five-year productivity coefficients of scientists based on the h-index and i10 index scores and citations in Google Scholar. Besides the indexing and ranking functions, AD Scientific Index sheds life on academic lives and offers the user the opportunity to perform an efficient academic analysis to scrutinize and detect faulty and unethical profiles, plagiarism, forgery, distortion, duplications, fabrication, slicing, salamization, unfair authorship, and several manifestations of academic mobbing. Such analyses also help reveal the medium and long-term results of several policies implemented by institutions, including those of the academic staff employment and retention policies, wage policies, academic incentives, and scientific working environments. 

One of the major differences of the AD Scientific Index is the provision of the last five years’ scores and the total scores of the h-index and the i10 index, and the total and last five years’ number of citations. Other unique differences of the AD Scientific Index include rankings in all fields and subjects of scientific interest and the emphasis on the scientific productivity of the scientist. Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies.

The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Thus, scientists and universities can obtain their academic rankings and monitor developments in the ranking over time. 

For global university rankings, ranking organizations use the following parameters including the quality of education, employment rates of graduates, the quality of faculties within an individual university, international collaborations, the number of graduates and staff awarded with Nobel Prizes and Fields Medals, the number of highly cited researchers selected by Clarivate Analytics, the total number of research papers, the number of articles published by Nature and Science journals, the number of articles indexed in Science Citation Index-Expanded (SCIE) and Social Science Citation Index (SSCI), and the number of research articles receiving a high number of citations. Each ranking organization develops a ranking methodology, which attributes different % weights to selected items out of such parameters. Experienced ranking organizations evaluate 2000 - 3000 universities for ranking.

AD Scientific Index performs rankings using a single parameter, which is the number of "Valued and Productive Scientists" staffed by a specific university. Selected after years of observation, this parameter is calculated using the total H-index and i10-index values together with the number of citations, and the last 5 years’ total H-index and i10-index values along with the number of citations received over the last 5 years. We rank more than 15 930 universities using this method. A careful examination will reveal that most of the other parameters are representations of natural academic products of "Valued and Productive Scientists." Institutions that employ a high number of "Valued and Productive Scientists", for example, scientists in the first Top 2%, Top 10%, Top 20%, Top 40%, Top 60%, Top 80% and later ranks, respectively, will naturally produce increased numbers of academic outputs listed as the parameters above.

A comparison of "AD Scientific Index" scores of universities, some examples of which are given below, with the scores from other ranking institutions will show great agreement among scores. We use our methodology to rank universities of different characteristics and sizes from different countries and every continent, achieving very successful results through the yielded ranking figures. Considering the continuing processes of data entry and data cleaning for more than 19.000 universities, we foresee that data entry issues, such as not completed entries or human errors in data entry caused either by universities or our team mistakenly, will be resolved and will yield to improved accuracy of results over time.

You may sort the ranking from the highest score to the lowest or vice versa in any of these fields. You can observe the fields, which move the respective university to the forefront. Furthermore, the name of the academician with the highest total h-index in the respective university is displayed with the world ranking. Top University Ranking by “AD Scientific Index” will not only list the areas, where a university is the best or has room for improvement, but also reflect the outcomes of scientist policies of the institutions. This report reveals the competency of institutions to attract prized scientists and the ability of institutions to encourage advances and retain scientists.

The list of universities for ranking comparisons is presented below:

Through the contribution of many scientists from different fields, the "AD Scientific Index" undergoes systematic updates with the aim of continuous improvement. The index is an independent institution and does not receive any support from any institutions, organizations, countries, or funds. Concurrently with the continuous increase in the number of universities and scientists registered to the Index, we are improving methodology, software, data accuracy, and data cleaning procedures every day through the contributions of a large team. Your remarks and contributions about our shortcomings will shed light to lead our efforts for continuous improvement.

May 25, 2021 Total 417.605 scientist, 167 country, 9.525 university

June 18, 2021 Total 700.093 scientist, 182 country, 11.350 university

October 18, 2021 Total 708.675 scientist, 206 country, 13.542 university

December 8, 2021 Total 710.652 scientist, 212 country, 14.124 university

January 3, 2022 Total 716.979 scientist, 212 country, 14.130 university

February 1, 2022 Total 744.886 scientist, 216 country, 14.172 university

March 27, 2022 Total 838.396 scientist, 216 country, 15.165 university

April 27, 2022 Total 907.146 scientist, 217 country, 15.450 university

June 5, 2022 Total 948.737 scientist, 216 country, 15.652 university

August 1, 2022 Total 1.037.806 scientist, 16.043 university

October 1, 2022 Total 1.082.054 scientist, 19.490 university

November 1, 2022 Total 1.113.263 scientist, 216 country, 19.520 university

November 13, 2022 Total 1.144.571 scientist, 216 country, 19.528 university

For a more detailed explanation,

Possible reasons why a scientist is not on this list...

Reasons why a name is not on the list...

How can individuals find out their ranking if they are not already included in the list?

please refer to our “Methodology” page.


AD Scientific Index Ltd.