Hideyasu Kojima

1.2k total citations
63 papers, 921 citations indexed

About

Hideyasu Kojima is a scholar working on Astronomy and Astrophysics, Ecology and Atmospheric Science. According to data from OpenAlex, Hideyasu Kojima has authored 63 papers receiving a total of 921 indexed citations (citations by other indexed papers that have themselves been cited), including 49 papers in Astronomy and Astrophysics, 21 papers in Ecology and 10 papers in Atmospheric Science. Recurrent topics in Hideyasu Kojima's work include Astro and Planetary Science (48 papers), Planetary Science and Exploration (36 papers) and Isotope Analysis in Ecology (19 papers). Hideyasu Kojima is often cited by papers focused on Astro and Planetary Science (48 papers), Planetary Science and Exploration (36 papers) and Isotope Analysis in Ecology (19 papers). Hideyasu Kojima collaborates with scholars based in Japan, United States and Belgium. Hideyasu Kojima's co-authors include Keizô Yanai, K. Tomeoka, K. Misawa, Shoichi Itoh, Hisayoshi Yurimoto, T. K. Mayeda, Robert N. Clayton, Toru Yada, Yukio Ikeda and M. Miyamoto and has published in prestigious journals such as Science, SHILAP Revista de lepidopterología and Geochimica et Cosmochimica Acta.

In The Last Decade

Hideyasu Kojima

62 papers receiving 879 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hideyasu Kojima Japan 16 837 396 250 202 33 63 921
A. W. R. Bevan United Kingdom 21 1.1k 1.3× 451 1.1× 244 1.0× 317 1.6× 74 2.2× 80 1.2k
Byeon‐Gak Choi United States 16 1.1k 1.3× 564 1.4× 268 1.1× 169 0.8× 43 1.3× 32 1.2k
T. Kunihiro Japan 13 778 0.9× 332 0.8× 185 0.7× 168 0.8× 32 1.0× 44 1.0k
V. A. Fernandes United Kingdom 24 1.3k 1.5× 508 1.3× 233 0.9× 299 1.5× 34 1.0× 61 1.4k
Y. Reese United States 17 1.3k 1.5× 521 1.3× 312 1.2× 342 1.7× 66 2.0× 65 1.4k
A. Ruzicka United States 23 1.2k 1.4× 736 1.9× 255 1.0× 149 0.7× 35 1.1× 96 1.3k
D. H. Hill United States 18 680 0.8× 304 0.8× 181 0.7× 133 0.7× 17 0.5× 46 741
A. S. Sexton United Kingdom 9 534 0.6× 226 0.6× 181 0.7× 184 0.9× 28 0.8× 23 606
D. Nakashima Japan 19 1.1k 1.3× 372 0.9× 200 0.8× 191 0.9× 19 0.6× 96 1.2k
H. Waenke Germany 14 622 0.7× 328 0.8× 154 0.6× 134 0.7× 32 1.0× 45 756

Countries citing papers authored by Hideyasu Kojima

Since Specialization
Citations

This map shows the geographic impact of Hideyasu 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 Hideyasu Kojima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hideyasu Kojima more than expected).

Fields of papers citing papers by Hideyasu Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hideyasu 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 Hideyasu Kojima. The network helps show where Hideyasu Kojima may publish in the future.

Co-authorship network of co-authors of Hideyasu Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Hideyasu Kojima. A scholar is included among the top collaborators of Hideyasu 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 Hideyasu Kojima. Hideyasu Kojima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ninagawa, K., et al.. (2005). Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, IV: Asuka ordinary chondrites. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 18. 1–16. 3 indexed citations
2.
Ninagawa, K., et al.. (2002). Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, III: Asuka and Yamato type 3. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 15. 114–121. 2 indexed citations
3.
Imae, Naoya & Hideyasu Kojima. (2000). On the relationship between troilite and/or magnetite rimmed FeNi metals and subtype in CO3 chondrites. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 13. 65–77. 1 indexed citations
4.
Ninagawa, K., Shin Toyoda, Naoya Imae, et al.. (2000). Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, II: New measurements for thirty type 3 ordinary chondrites. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 13. 112–120. 4 indexed citations
5.
Ninagawa, K., et al.. (1998). Thermoluminescence of Japanese Antarctic ordinary chondrite collection. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 11. 1–17. 4 indexed citations
6.
Haramura, Hiroshi, Yukio Ikeda, Makoto Kimura, et al.. (1997). Comparative study on the major element chemical compositions of Antarctic chondrites to those of non-Antarctic falls with reference to terrestrial weathering. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 10(10). 165–180. 8 indexed citations
7.
Ikeda, Yukio, et al.. (1997). Yamato-791093, a metal-sulfide-enriched H-group chondritic meteorite transitional to primitive IIE irons with silicate inclusions. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 10. 335–353. 13 indexed citations
8.
Kojima, Hideyasu, M. Miyamoto, & P. H. Warren. (1997). The Yamato-793605 martian meteorite consortium. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 10(10). 3–12. 7 indexed citations
9.
Yanai, Keizô & Hideyasu Kojima. (1995). Yamato-8451: A newly identified pyroxene-bearing pallasite. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 8(8). 1–10. 11 indexed citations
10.
Yanai, Keizô, Kazuyuki Shiraishi, & Hideyasu Kojima. (1994). The Asuka-90 meteorites collection from Antarctica: Searching, initial processing and preliminary identification. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 7. 1–8. 1 indexed citations
11.
Kimura, Makoto, Yangting Lin, Yukio Ikeda, et al.. (1993). Mineralogy of Antarctic aubrities, Yamato-793592 and Allan Hills-78113: Comparison with non-Antarctic aubrites and E-chondrites. 6. 186–203. 10 indexed citations
12.
Hiroi, Yoshikuni & Hideyasu Kojima. (1988). PETROLOGY OF DOLOMITIC MARBLES FROM KASUMI ROCK, PRINCE OLAV COAST, EAST ANTARCTICA. 2(2). 96–109. 4 indexed citations
13.
Kojima, Hideyasu, et al.. (1987). A PRELIMINARY REPORT ON THE GEOLOGY OF THE CENTRAL PART OF THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA. 1(1). 113–128. 3 indexed citations
14.
Moriwaki, Kiichi, et al.. (1986). Report on the geological, geomorphological and geodetic field party in the Sør Rondane Mountains, 1986 (JARE-27). SHILAP Revista de lepidopterología. 2 indexed citations
15.
Yanai, Keizô, Hideyasu Kojima, & Yukio Matsumoto. (1985). A New Type Chondrite?: Yamato-75302 Consists Mostly of Very High Iron Olivine. Meteoritics and Planetary Science. 20. 791. 18 indexed citations
16.
Yanai, Keizô & Hideyasu Kojima. (1985). Yamato-82193 Meteorite: The Third Lunar Meteorite Collected at the Yamato Mountains, Antarctica. Metic. 20. 790. 3 indexed citations
17.
Yanai, Keizô & Hideyasu Kojima. (1984). Yamato-791197: A lunar meteorite in the Japanese collection of Antarctic meteorites. Memoirs of National Institute of Polar Research. Special issue. 35(35). 18–34. 15 indexed citations
18.
Delaney, J. S., Craig O’Neill, C. E. Nehru, et al.. (1984). The classification and reconnaisance petrography o of basaltic achondrites from the Yamato 1979 collection including pigeonite cumulate eucrites,a new group. Memoirs of National Institute of Polar Research. Special issue. 35(35). 53–80. 4 indexed citations
19.
Kojima, Hideyasu, Yukio Ikeda, & Keizô Yanai. (1984). The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites. Memoirs of National Institute of Polar Research. Special issue. 35(35). 184–199. 28 indexed citations
20.
Matsumoto, Yukio, et al.. (1982). Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica. Memoirs of National Institute of Polar Research. Special issue. 21. 47–70. 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.

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