Hiroyuki Kojima

353 total papers · 2.2k total citations
187 papers, 1.6k citations indexed

About

Hiroyuki Kojima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Control and Systems Engineering. According to data from OpenAlex, Hiroyuki Kojima has authored 187 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Surgery, 52 papers in Pulmonary and Respiratory Medicine and 35 papers in Control and Systems Engineering. Recurrent topics in Hiroyuki Kojima's work include Gallbladder and Bile Duct Disorders (27 papers), Pancreatic and Hepatic Oncology Research (24 papers) and Esophageal and GI Pathology (19 papers). Hiroyuki Kojima is often cited by papers focused on Gallbladder and Bile Duct Disorders (27 papers), Pancreatic and Hepatic Oncology Research (24 papers) and Esophageal and GI Pathology (19 papers). Hiroyuki Kojima collaborates with scholars based in Japan, United States and Singapore. Hiroyuki Kojima's co-authors include Satoshi Sawada, Atsushi Komemushi, Noboru Tanigawa, Shuji Kariya, Yuzo Shomura, Shuntaro Mukai, Sadao Komemushi, Ryosuke Tonozuka, Takayoshi Tsuchiya and Takao Itoi and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and Radiology.

In The Last Decade

Hiroyuki Kojima

167 papers receiving 1.5k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Hiroyuki Kojima 736 342 330 228 167 187 1.6k
Takashi Yamanaka 415 0.6× 289 0.8× 547 1.7× 365 1.6× 172 1.0× 145 2.4k
Thomas Herold 512 0.7× 49 0.1× 346 1.0× 231 1.0× 67 0.4× 83 1.4k
Takashi Tsuchiya 677 0.9× 194 0.6× 371 1.1× 655 2.9× 190 1.1× 151 2.1k
Wei Du 411 0.6× 326 1.0× 149 0.5× 120 0.5× 83 0.5× 124 1.8k
Jason Y. K. Chan 745 1.0× 89 0.3× 612 1.9× 516 2.3× 329 2.0× 123 2.2k
Sumanta Mukherjee 174 0.2× 71 0.2× 267 0.8× 178 0.8× 117 0.7× 74 2.1k
Kamal Khalil 511 0.7× 47 0.1× 311 0.9× 106 0.5× 75 0.4× 69 1.3k
Ryuichi Yoshida 857 1.2× 53 0.2× 349 1.1× 755 3.3× 183 1.1× 180 2.4k
Chang‐Ho Kim 207 0.3× 134 0.4× 266 0.8× 58 0.3× 80 0.5× 107 1.5k
Liang Kang 602 0.8× 237 0.7× 297 0.9× 818 3.6× 71 0.4× 162 2.1k

Countries citing papers authored by Hiroyuki Kojima

Since Specialization
Citations

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

Fields of papers citing papers by Hiroyuki Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroyuki Kojima

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

All Works

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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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2026