The chart shows the history of publications by Naoaki Kumagai between 1975 and 2015, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Naoaki Kumagai published across 41 years, from 1975 to 2015, averaging 4.1 papers a year. Output peaked at 13 publications in 2010. 3 of the 167 publications appeared in the last two years.
167 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1975 | 1 |
| 1976 | 2 |
| 1977 | 0 |
| 1978 | 2 |
| 1979 | 0 |
| 1980 | 0 |
| 1981 | 0 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 0 |
| 1985 | 1 |
| 1986 | 0 |
| 1987 | 2 |
| 1988 | 3 |
| 1989 | 3 |
| 1990 | 0 |
| 1991 | 2 |
| 1992 | 3 |
| 1993 | 4 |
| 1994 | 2 |
| 1995 | 2 |
| 1996 | 4 |
| 1997 | 5 |
| 1998 | 6 |
| 1999 | 3 |
| 2000 | 10 |
| 2001 | 11 |
| 2002 | 11 |
| 2003 | 7 |
| 2004 | 5 |
| 2005 | 10 |
| 2006 | 12 |
| 2007 | 11 |
| 2008 | 7 |
| 2009 | 3 |
| 2010 | 13 |
| 2011 | 5 |
| 2012 | 7 |
| 2013 | 4 |
| 2014 | 2 |
| 2015 | 1 |
| Total | 167 |
The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Naoaki Kumagai sits on this spectrum.
The last bar groups every scientist with 1,163 publications or more.
| Publications | Scientists |
|---|---|
| 50–69 | 28 |
| 70–89 | 152 |
| 90–109 | 356 |
| 110–129 | 487 |
| 130–149 | 723 |
| 150–169 | 835 |
| 170–189 | 850 |
| 190–209 | 891 |
| 210–229 | 862 |
| 230–249 | 766 |
| 250–269 | 726 |
| 270–289 | 665 |
| 290–309 | 593 |
| 310–329 | 537 |
| 330–349 | 477 |
| 350–369 | 440 |
| 370–389 | 356 |
| 390–409 | 321 |
| 410–429 | 256 |
| 430–449 | 246 |
| 450–469 | 216 |
| 470–489 | 212 |
| 490–509 | 174 |
| 510–529 | 194 |
| 530–549 | 162 |
| 550–569 | 131 |
| 570–589 | 111 |
| 590–609 | 103 |
| 610–629 | 99 |
| 630–649 | 77 |
| 650–669 | 92 |
| 670–689 | 56 |
| 690–709 | 53 |
| 710–729 | 53 |
| 730–749 | 38 |
| 750–769 | 52 |
| 770–789 | 43 |
| 790–809 | 38 |
| 810–829 | 34 |
| 830–849 | 25 |
| 850–869 | 18 |
| 870–889 | 20 |
| 890–909 | 24 |
| 910–929 | 27 |
| 930–949 | 20 |
| 950–969 | 17 |
| 970–989 | 10 |
| 990–1,009 | 16 |
| 1,010–1,029 | 13 |
| 1,030–1,049 | 12 |
| 1,050–1,069 | 9 |
| 1,070–1,089 | 8 |
| 1,090–1,109 | 7 |
| 1,110–1,129 | 9 |
| 1,130–1,149 | 2 |
| 1,150–1,162 | 5 |
| 1,163+ | 100 |
The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Naoaki Kumagai sits on this spectrum.
The last bar groups every scientist with 165 D-Index or more.
| D-Index | Scientists |
|---|---|
| 40–41 | 211 |
| 42–43 | 450 |
| 44–45 | 612 |
| 46–47 | 612 |
| 48–49 | 598 |
| 50–51 | 657 |
| 52–53 | 667 |
| 54–55 | 621 |
| 56–57 | 597 |
| 58–59 | 610 |
| 60–61 | 587 |
| 62–63 | 606 |
| 64–65 | 533 |
| 66–67 | 490 |
| 68–69 | 469 |
| 70–71 | 378 |
| 72–73 | 421 |
| 74–75 | 359 |
| 76–77 | 323 |
| 78–79 | 299 |
| 80–81 | 230 |
| 82–83 | 210 |
| 84–85 | 195 |
| 86–87 | 203 |
| 88–89 | 175 |
| 90–91 | 175 |
| 92–93 | 142 |
| 94–95 | 121 |
| 96–97 | 117 |
| 98–99 | 107 |
| 100–101 | 88 |
| 102–103 | 85 |
| 104–105 | 68 |
| 106–107 | 62 |
| 108–109 | 57 |
| 110–111 | 45 |
| 112–113 | 49 |
| 114–115 | 50 |
| 116–117 | 34 |
| 118–119 | 38 |
| 120–121 | 37 |
| 122–123 | 29 |
| 124–125 | 28 |
| 126–127 | 24 |
| 128–129 | 33 |
| 130–131 | 28 |
| 132–133 | 21 |
| 134–135 | 20 |
| 136–137 | 23 |
| 138–139 | 17 |
| 140–141 | 12 |
| 142–143 | 17 |
| 144–145 | 21 |
| 146–147 | 13 |
| 148–149 | 11 |
| 150–151 | 14 |
| 152–153 | 13 |
| 154–155 | 9 |
| 156–157 | 10 |
| 158–159 | 7 |
| 160–161 | 4 |
| 162–163 | 4 |
| 164 | 3 |
| 165+ | 98 |
Naoaki Kumagai is affiliated with Iwate University in Japan, where they engage in academic research. The scope of their work, research topics, and publication record detail a focused academic career.
The scientist has not listed recent papers, co-authors, or frequent publication venues, which suggests limited publicly available bibliographic data at this moment.
Similarly, there is no information regarding book publications, which indicates a lack of contributions in the form of authored or edited volumes. No main or subfields of study have been specified, which restricts direct insight into their specific academic focus areas.
There are no reported awards attributed to Naoaki Kumagai, and there is no indication that the scientist is deceased.
Despite the limited data on publications and research topics, the scientist's affiliation with a recognized academic institution in Japan establishes a formal research environment.
Seung Taek Myung;Kentarou Izumi;Shinichi Komaba;Yang Kook Sun
Shinichi Komaba;Naoaki Kumagai;Yoichi Kataoka
Seung Taek Myung;Naoaki Kumagai;Shinichi Komaba;Hoon Taek Chung
Seung Taek Myung;Shinichi Komaba;Norimitsu Hirosaki;Hitoshi Yashiro
Seung Taek Myung;Shinichi Komaba;Naoaki Kumagai
Seung-Taek Myung;Shinichi Komaba;Naoaki Kumagai;Hitoshi Yashiro
Seung Taek Myung;Kentarou Izumi;Shinichi Komaba;Hitoshi Yashiro
Ryoji Kodama;Yasuko Terada;Izumi Nakai;Shinichi Komaba
Naoaki Kumagai;Kazuo Tanno;Tsuyoshi Nakajima;Nobuatsu Watanabe
Naoaki Kumagai;Yoshimasa Koishikawa;Shinichi Komaba;Nobuharu Koshiba
Seung-Taek Myung;Myung-Hun Lee;Shinichi Komaba;Naoaki Kumagai
Seung Taek Myung;Shinichi Komaba;Kiyoharu Hosoya;Norimitsu Hirosaki
Shinichi Komaba;Naoaki Kumagai;Shiho Chiba
Naoaki Kumagai;Aishui Yu
Seung-Taek Myung, ,†;Shinichi Komaba;Koutarou Kurihara;Kiyoharu Hosoya
Ken-ichi Watanabe;Mitsuru Koseki;Naoaki Kumagai
Seung Taek Myung;Shinichi Komaba;Naoaki Kumagai
M. Baba;N. Kumagai;H. Kobayashi;O. Nakano
Koichi Ui;Shinei Kikuchi;Yoshihiro Kadoma;Naoaki Kumagai
Yoshihiro Kadoma;Jung-Min Kim;Katsutoshi Abiko;Keitaro Ohtsuki
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