H. Kojima

2.3k total citations
236 papers, 1.8k citations indexed

About

H. Kojima is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Astronomy and Astrophysics. According to data from OpenAlex, H. Kojima has authored 236 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 148 papers in Electrical and Electronic Engineering, 124 papers in Materials Chemistry and 70 papers in Astronomy and Astrophysics. Recurrent topics in H. Kojima's work include High voltage insulation and dielectric phenomena (119 papers), Power Transformer Diagnostics and Insulation (56 papers) and Vacuum and Plasma Arcs (37 papers). H. Kojima is often cited by papers focused on High voltage insulation and dielectric phenomena (119 papers), Power Transformer Diagnostics and Insulation (56 papers) and Vacuum and Plasma Arcs (37 papers). H. Kojima collaborates with scholars based in Japan, Germany and United States. H. Kojima's co-authors include Naoki Hayakawa, Hitoshi Okubo, F. Endo, H. Ōkubo, K. Kato, Masahiro Hanai, Diaa‐Eldin A. Mansour, Kenji Tsuchiya, Yusuke Nakano and Shigehisa Tanaka and has published in prestigious journals such as IEEE Transactions on Power Electronics, IEEE Journal of Solid-State Circuits and Medicine.

In The Last Decade

H. Kojima

223 papers receiving 1.7k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
H. Kojima Japan	22	1.2k	962	435	390	274	236	1.8k
Joaquim J. Barroso Brazil	25	1.1k 0.9×	192 0.2×	89 0.2×	291 0.7×	338 1.2×	212	2.2k
P. Osmokrović Serbia	29	1.7k 1.5×	950 1.0×	215 0.5×	165 0.4×	198 0.7×	141	2.1k
Tadasu Takuma Japan	20	1.3k 1.1×	1.2k 1.3×	459 1.1×	164 0.4×	325 1.2×	123	1.7k
V. S. Yuferev Russia	20	449 0.4×	430 0.4×	116 0.3×	92 0.2×	123 0.4×	117	1.1k
Aici Qiu China	23	996 0.9×	431 0.4×	128 0.3×	100 0.3×	671 2.4×	276	2.3k
A. Ouroua United States	18	340 0.3×	213 0.2×	252 0.6×	88 0.2×	262 1.0×	58	999
Xiaofu Zhang China	20	335 0.3×	277 0.3×	82 0.2×	150 0.4×	104 0.4×	126	1.3k
Satish M. Mahajan United States	17	677 0.6×	115 0.1×	267 0.6×	65 0.2×	132 0.5×	90	1.1k
J.V. Minervini United States	23	907 0.8×	193 0.2×	185 0.4×	1.7k 4.4×	177 0.6×	144	2.4k
Junjia He China	19	806 0.7×	547 0.6×	421 1.0×	36 0.1×	205 0.7×	175	1.3k

Countries citing papers authored by H. Kojima

Since Specialization

Citations

This map shows the geographic impact of H. Kojima's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by H. Kojima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Kojima more than expected).

Fields of papers citing papers by H. Kojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Kojima. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by H. Kojima. The network helps show where H. Kojima may publish in the future.

Co-authorship network of co-authors of H. Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of H. Kojima. A scholar is included among the top collaborators of H. Kojima based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with H. Kojima. H. Kojima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

1.

Kojima, H., et al.. (2020). Conductivity Distribution in Air by Charging Process on Solid Dielectrics under DC Voltage. 1 indexed citations

2.

Kojima, Hiroaki, et al.. (2020). Carbonization Phenomena Dependence on Pressure between Insulation Sheets by Steeper Inverter Surge at Inverter Fed Motor.

3.

Hayakawa, Naoki, et al.. (2018). Electric Field Grading by Functionally Graded Materials (FGM) for HVDC Gas Insulated Power Apparatus. 309–312. 8 indexed citations

4.

Matsuoka, M., T. Nakamura, Nοbuyοshi Miyajima, et al.. (2017). Vis-IR Reflectance Spectroscopy of Hydrous Carbonaceous Chondrites with Variable Heating and Dehydration Degrees. LPI. 2050. 1 indexed citations

5.

Arai, T., K. Misawa, & H. Kojima. (2007). Lunar Meteorite MIL 05035: Mare Basalt Paired with Asuka-881757. Lunar and Planetary Science Conference. 1582. 2 indexed citations

6.

Arai, Tomoko, K. Misawa, & H. Kojima. (2005). A New Lunar Meteorite MET 01210: Mare Breccia with a Low-Ti Ferrobasalt. LPI. 2361. 4 indexed citations

7.

Kita, N. T., et al.. (2005). Source Magma Compositions for Basalt Clasts of Lunar Meteorite EET 87521 in Connection to KREEP. Meteoritics and Planetary Science Supplement. 40. 5196. 1 indexed citations

8.

Nakamura, T., T. Noguchi, T. Ushikubo, et al.. (2003). Variations of Oxygen Isotopic Compositions of Silicate Spherules Collected from Antarctic Blue Ice. LPI. 1587. 3 indexed citations

9.

Kaiden, H. & H. Kojima. (2002). Yamato983885: A second lunar meteorite from the Yamato 98 collection.. 27. 49–51. 2 indexed citations

10.

Itoh, S., Alan E. Rubin, H. Kojima, J. T. Wasson, & Hisayoshi Yurimoto. (2002). Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes. LPI. 1490. 21 indexed citations

11.

Okazaki, Ryuji, Keisuke Nagao, Naoya Imae, & H. Kojima. (2002). Noble gases in Antarctic nakhlites, Yamato 000593 and Yamato 000749.. 27. 134–136. 1 indexed citations

12.

Takeda, H., L. E. Nyquist, & H. Kojima. (2002). Mineralogical Study of a Gray Anorthositic Clast in the Yamato 86032 Lunar Meteorite: Windows to the Far-Side Highland. Lunar and Planetary Science Conference. 1267. 2 indexed citations

13.

Kojima, H., et al.. (2002). The Yamato nakhlite consortium.. 27. 66–68. 1 indexed citations

14.

Yamaguchi, Akira, K. Misawa, Hiroshi Haramura, et al.. (2001). Northwest Africa 011, a New Basaltic Meteorite. Meteoritics and Planetary Science Supplement. 36. 2 indexed citations

15.

Takeda, H., et al.. (1996). Distribution of Opaque Minerals in Primitive Achondrites. LPI. 27. 1483. 3 indexed citations

16.

Nagahara, H., T. Fukuoka, Ichiro Kaneoka, et al.. (1990). Petrology of unique meteorites, Y-74063, Y-74357, Y-75261, Y-75274, Y-75300, Y-75305, A-77081, A-78230, and Y-8002.. 15. 92–94. 3 indexed citations

17.

Kojima, H., et al.. (1987). New lunar meteorite: Yamato-793274.. 12. 17–18. 4 indexed citations

18.

Graham, A. L., et al.. (1985). Yamato 81020 and Yamato 82042; Two New Carbonaceous Chondrites from Antarctica. Metic. 20. 654. 2 indexed citations

19.

Yanai‬, ‪Keiji & H. Kojima. (1984). Lunar Meteorite in Japanese Collection of the Yamato Meteorites.. 9. 42–43. 2 indexed citations

20.

Takeda, H., et al.. (1982). Impact-Melted LL-Chondrites of Yamato 79-Collection.. 7. 9–10. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact