This map shows the geographic impact of Kenichi Ishii'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 Kenichi Ishii with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kenichi Ishii more than expected).
This network shows the impact of papers produced by Kenichi Ishii. 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 Kenichi Ishii. The network helps show where Kenichi Ishii may publish in the future.
Co-authorship network of co-authors of Kenichi Ishii
This figure shows the co-authorship network connecting the top 25 collaborators of Kenichi Ishii.
A scholar is included among the top collaborators of Kenichi Ishii 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 Kenichi Ishii. Kenichi Ishii is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Sakamoto, Takashi, et al.. (2003). Experimental And Analytical Study For the Installation of Flexible Pipe In Existing Submarine Pipelines By Pipe-in-Pipe Technology.1 indexed citations
5.
Ishii, Kenichi, et al.. (1995). A Design of Flexible Riser Pipe With Composite Material.1 indexed citations
6.
Nakazawa, Keiji, Yuji Bando, Kenichi Ishii, et al.. (1981). The Permian and the Lower Triassic Systems in Abadeh Region, Central Iran. Kyoto University Research Information Repository (Kyoto University). 47(2). 61–133.107 indexed citations
7.
Ishii, Kenichi, Yuji Okimura, & Keiji Nakazawa. (1975). On the Genus Colaniella and its Biostratigraphic Significance. Journal of Geosciences, Osaka City University. 19. 107–138.35 indexed citations
8.
Nakazawa, Keiji, et al.. (1975). Upper Permian Fossils from Island of Salamis, Greeoe. Kyoto University Research Information Repository (Kyoto University). 41(2). 21–44.10 indexed citations
9.
Ishii, Kenichi, et al.. (1974). Khumerspira, a new Genus of Bellerophontidae, and some Middle Permian Gastropods from Cambodia (Contributions to the Geology and Palaeontology of Cambodia, Part 4). Journal of Geosciences, Osaka City University. 17(17). 73–86.3 indexed citations
10.
Ishii, Kenichi, et al.. (1972). Permian Brachiopods from Bukit Tungku Lembu, Perlis, Malaysia. Journal of Geosciences, Osaka City University. 15. 65–76.2 indexed citations
11.
Ishii, Kenichi, Jochen Fischer, & Yuji Bando. (1971). Notes on the Permian-Triassic boundary in Eastern Afghanistan. Journal of Geosciences, Osaka City University. 14(14). 1–18.3 indexed citations
12.
Nakazawa, Keiji, et al.. (1970). Preliminary Report on the Permo-Trias of Kashmir. Kyoto University Research Information Repository (Kyoto University). 37(2). 163–172.15 indexed citations
13.
Yao, Akira, et al.. (1970). Discovery of the Upper Jurassic / Permian Unconformity at Shirasaki, Wakayama Prefecture and its Geological Significance. Journal of Geosciences, Osaka City University. 13(13). 17–30.2 indexed citations
14.
Ishii, Kenichi. (1966). On Some Fusulinids and Other Foraminifera from the Permian of Pahang, Malaya : Notes on the Geology and Palaeontology of Malaya-V. Journal of Geosciences, Osaka City University. 9. 131–142.12 indexed citations
15.
Ishii, Kenichi, et al.. (1966). On the Remarkable Unconformity at the Jengka Pass, pahang, Malaya : Notes on the Geology and Palaeontology of Malaya-IV. Journal of Geosciences, Osaka City University. 9. 123–130.7 indexed citations
16.
Ishii, Kenichi. (1966). Preliminary Notes of the Permian Fusulinids of H.S.LEE Mine.8 Limestone near Kamper, Perak, Malaya. Journal of Geosciences, Osaka City University. 9. 145–145.2 indexed citations
17.
Ishii, Kenichi, et al.. (1966). Discovery of Triassic Conodonts from the So-called Palaeozoic Limestone in Kedah, Malaya. Journal of Geosciences, Osaka City University. 9. 93–98.18 indexed citations
18.
Ishii, Kenichi, et al.. (1962). On Yabeina shiraiwensis Ozawa and Yabeina yasubaensis Toriyama. Journal of Geosciences, Osaka City University. 6. 59–72.3 indexed citations
19.
Ishii, Kenichi. (1962). Fusulinids from the Middle Upper Carboniferous Itadorigawa Group in Western Shikoku, Japan Part 2. Genus Fusulinella and other Fusulinids. Journal of Geosciences, Osaka City University. 6. 1–58.10 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.