| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Social Sciences and Humanities | 46 | 3588 | 3305 | 7 | 7 | 194 | 10020 |
The chart shows the history of publications by Naoki Ikegami between 1980 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Naoki Ikegami published across 46 years, from 1980 to 2025, averaging 4.8 papers a year. Output peaked at 20 publications in 1998. 2 of the 221 publications appeared in the last two years.
221 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1980 | 1 |
| 1981 | 0 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 0 |
| 1985 | 2 |
| 1986 | 1 |
| 1987 | 0 |
| 1988 | 1 |
| 1989 | 1 |
| 1990 | 0 |
| 1991 | 1 |
| 1992 | 2 |
| 1993 | 0 |
| 1994 | 2 |
| 1995 | 2 |
| 1996 | 4 |
| 1997 | 10 |
| 1998 | 20 |
| 1999 | 11 |
| 2000 | 8 |
| 2001 | 6 |
| 2002 | 8 |
| 2003 | 9 |
| 2004 | 9 |
| 2005 | 5 |
| 2006 | 9 |
| 2007 | 5 |
| 2008 | 8 |
| 2009 | 12 |
| 2010 | 7 |
| 2011 | 11 |
| 2012 | 5 |
| 2013 | 5 |
| 2014 | 16 |
| 2015 | 9 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
| Total | 221 |
The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Naoki Ikegami sits on this spectrum.
This scientist: 194 publications — 62nd percentile
62% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 570 publications or more.
| Publications | Scientists | This scientist |
|---|---|---|
| 44–53 | 28 | |
| 54–63 | 61 | |
| 64–73 | 161 | |
| 74–83 | 225 | |
| 84–93 | 301 | |
| 94–103 | 390 | |
| 104–113 | 406 | |
| 114–123 | 474 | |
| 124–133 | 453 | |
| 134–143 | 434 | |
| 144–153 | 407 | |
| 154–163 | 411 | |
| 164–173 | 391 | |
| 174–183 | 313 | |
| 184–193 | 319 | |
| 194–203 | 304 | 194 |
| 204–213 | 285 | |
| 214–223 | 246 | |
| 224–233 | 213 | |
| 234–243 | 170 | |
| 244–253 | 167 | |
| 254–263 | 162 | |
| 264–273 | 138 | |
| 274–283 | 138 | |
| 284–293 | 113 | |
| 294–303 | 106 | |
| 304–313 | 95 | |
| 314–323 | 101 | |
| 324–333 | 81 | |
| 334–343 | 69 | |
| 344–353 | 56 | |
| 354–363 | 36 | |
| 364–373 | 42 | |
| 374–383 | 41 | |
| 384–393 | 44 | |
| 394–403 | 27 | |
| 404–413 | 30 | |
| 414–423 | 20 | |
| 424–433 | 29 | |
| 434–443 | 29 | |
| 444–453 | 25 | |
| 454–463 | 19 | |
| 464–473 | 21 | |
| 474–483 | 11 | |
| 484–493 | 17 | |
| 494–503 | 7 | |
| 504–513 | 6 | |
| 514–523 | 12 | |
| 524–533 | 10 | |
| 534–543 | 7 | |
| 544–553 | 6 | |
| 554–563 | 12 | |
| 564–569 | 8 | |
| 570+ | 100 |
The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Naoki Ikegami sits on this spectrum.
This scientist: 46 D-Index — 55th percentile
55% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 100 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 30 | 177 | |
| 31 | 210 | |
| 32 | 222 | |
| 33 | 188 | |
| 34 | 181 | |
| 35 | 243 | |
| 36 | 261 | |
| 37 | 272 | |
| 38 | 278 | |
| 39 | 300 | |
| 40 | 297 | |
| 41 | 308 | |
| 42 | 313 | |
| 43 | 300 | |
| 44 | 269 | |
| 45 | 260 | |
| 46 | 228 | 46 |
| 47 | 251 | |
| 48 | 203 | |
| 49 | 186 | |
| 50 | 187 | |
| 51 | 166 | |
| 52 | 138 | |
| 53 | 141 | |
| 54 | 131 | |
| 55 | 137 | |
| 56 | 109 | |
| 57 | 129 | |
| 58 | 95 | |
| 59 | 105 | |
| 60 | 106 | |
| 61 | 86 | |
| 62 | 94 | |
| 63 | 77 | |
| 64 | 79 | |
| 65 | 59 | |
| 66 | 68 | |
| 67 | 51 | |
| 68 | 49 | |
| 69 | 40 | |
| 70 | 43 | |
| 71 | 40 | |
| 72 | 50 | |
| 73 | 46 | |
| 74 | 43 | |
| 75 | 45 | |
| 76 | 45 | |
| 77 | 30 | |
| 78 | 25 | |
| 79 | 31 | |
| 80 | 29 | |
| 81 | 18 | |
| 82 | 21 | |
| 83 | 26 | |
| 84 | 15 | |
| 85 | 15 | |
| 86 | 19 | |
| 87 | 19 | |
| 88 | 12 | |
| 89 | 7 | |
| 90 | 19 | |
| 91 | 20 | |
| 92 | 13 | |
| 93 | 9 | |
| 94 | 13 | |
| 95 | 8 | |
| 96 | 7 | |
| 97 | 6 | |
| 98 | 6 | |
| 99 | 6 | |
| 100+ | 97 |
Naoki Ikegami is affiliated with Keio University in Japan. Their academic profile includes contributions to various fields associated with their institution.
Although specific details about their research papers, co-authors, and publication venues are not listed, their connection to Keio University positions them within a well-established academic environment known for diverse research activities.
There is no detailed record of main fields or subfields of study, nor topics explicitly connected to their work available from the data. This limits the ability to outline precise thematic areas or trends in their academic focus.
Naoki Ikegami's profile does not include information on awards, book publications, or other forms of academic recognition in the provided source.
The absence of recent papers or publication records in the data suggests either limited publicly cataloged output or a focus on non-published or less indexed scholarly activities.
Without noted co-authors or specific publication venues, it is not possible to describe the collaborative or dissemination patterns of their research at this time.
John N. Morris;Brant E. Fries;Knight Steel;Naoki Ikegami
Nanako Tamiya;Haruko Noguchi;Akihiro Nishi;Michael R Reich
Naoki Ikegami;Byung Kwang Yoo;Byung Kwang Yoo;Hideki Hashimoto;Masatoshi Matsumoto
Aki Tsuchiya;Shunya Ikeda;Naoki Ikegami;Shuzo Nishimura
John Creighton Campbell;Naoki Ikegami
Michael R Reich;Joseph Harris;Naoki Ikegami;Akiko Maeda
Miel W. Ribbe;Gunnar Ljunggren;Knight Steel;Eva Topinková
Zhanlian Feng;John P. Hirdes;John P. Hirdes;Trevor F. Smith;Harriet Finne-Soveri
Hideki Hashimoto;Naoki Ikegami;Kenji Shibuya;Nobuyuki Izumida
John P. Hirdes;Brant E. Fries;John N. Morris;Naoki Ikegami
John Creighton Campbell;Naoki Ikegami;Mary Jo Gibson
John P. Hirdes;Trevor F. Smith;Terry Rabinowitz;Keita Yamauchi
Naoki Ikegami;John C. Campbell
Satoko Niwata;Yukari Yamada;Yukari Yamada;Naoki Ikegami
Naoki Ikegami;John Creighton Campbell
Kenji Shibuya;Hideki Hashimoto;Naoki Ikegami;Akihiro Nishi;Akihiro Nishi
Naoki Ikegami;John Creighton Campbell
Hiroyuki Sakamaki;Shunya Ikeda;Naoki Ikegami;Yasuko Uchigata
Susan Horton;John Creighton Campbell;Naoki Ikegami
Naoki Ikegami
John Creighton Campbell;Naoki Ikegami
Hideki Hashimoto;Naoki Ikegami;Kenji Shibuya;Nobuyuki Izumida
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