Hiroshi Koyama

1.5k total citations
71 papers, 1.1k citations indexed

About

Hiroshi Koyama is a scholar working on Biomedical Engineering, Materials Chemistry and Surgery. According to data from OpenAlex, Hiroshi Koyama has authored 71 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Biomedical Engineering, 13 papers in Materials Chemistry and 12 papers in Surgery. Recurrent topics in Hiroshi Koyama's work include Cellular Mechanics and Interactions (11 papers), Hip disorders and treatments (6 papers) and 3D Printing in Biomedical Research (6 papers). Hiroshi Koyama is often cited by papers focused on Cellular Mechanics and Interactions (11 papers), Hip disorders and treatments (6 papers) and 3D Printing in Biomedical Research (6 papers). Hiroshi Koyama collaborates with scholars based in Japan, United States and Germany. Hiroshi Koyama's co-authors include Masayuki Fujimoto, Toshihiko Fujimori, Kazuya Ishihara, Nobuyoshi Awaya, Dongbo Shi, Yukihiro Matsuyama, Mitsuru Hanada, Yuji Nishi, Toshimasa Suzuki and Masaaki Takahashi and has published in prestigious journals such as Applied Physics Letters, PLoS ONE and Development.

In The Last Decade

Hiroshi Koyama

69 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hiroshi Koyama Japan 20 340 232 173 159 122 71 1.1k
Yahui Liu China 21 327 1.0× 189 0.8× 398 2.3× 77 0.5× 116 1.0× 70 1.7k
Jun Yamaguchi Japan 20 453 1.3× 388 1.7× 192 1.1× 162 1.0× 135 1.1× 88 1.7k
Shinji Watanabe Japan 18 335 1.0× 96 0.4× 127 0.7× 97 0.6× 182 1.5× 75 1.1k
Linan Li China 21 243 0.7× 142 0.6× 152 0.9× 155 1.0× 294 2.4× 101 1.4k
Quanfu Li China 21 355 1.0× 328 1.4× 507 2.9× 86 0.5× 253 2.1× 90 1.4k
Ryo Yamaguchi Japan 18 110 0.3× 124 0.5× 339 2.0× 95 0.6× 124 1.0× 157 1.5k
Kazutaka Nishikawa Japan 27 183 0.5× 353 1.5× 507 2.9× 113 0.7× 606 5.0× 86 2.5k
Nan Wu China 28 677 2.0× 198 0.9× 528 3.1× 140 0.9× 214 1.8× 90 2.0k
Dongmei Li China 18 174 0.5× 237 1.0× 164 0.9× 294 1.8× 94 0.8× 158 1.3k
Sabrina Lacomme France 16 65 0.2× 110 0.5× 204 1.2× 136 0.9× 145 1.2× 36 792

Countries citing papers authored by Hiroshi Koyama

Since Specialization
Citations

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

Fields of papers citing papers by Hiroshi Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroshi Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroshi Koyama. A scholar is included among the top collaborators of Hiroshi Koyama 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 Hiroshi Koyama. Hiroshi Koyama 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.
Morigaki, Ryoma, et al.. (2024). Striatal parvalbumin interneurons are activated in a mouse model of cerebellar dystonia. Disease Models & Mechanisms. 17(5). 3 indexed citations
2.
Koyama, Hiroshi, Hisashi Okumura, Atsushi Ito, et al.. (2023). Effective mechanical potential of cell–cell interaction explains three-dimensional morphologies during early embryogenesis. PLoS Computational Biology. 19(8). e1011306–e1011306. 6 indexed citations
3.
Morigaki, Ryoma, Hiroshi Koyama, Nobuaki Yamamoto, et al.. (2023). Cranial geometry in patients with dystonia and Parkinson’s disease. Scientific Reports. 13(1). 11003–11003. 2 indexed citations
4.
Koyama, Hiroshi, et al.. (2022). An ImageJ ‐based tool for three‐dimensional registration between different types of microscopic images. Development Growth & Differentiation. 65(1). 65–74. 2 indexed citations
5.
Koyama, Hiroshi, Makoto Suzuki, Naoko Yasue, et al.. (2022). Differential Cellular Stiffness Contributes to Tissue Elongation on an Expanding Surface. Frontiers in Cell and Developmental Biology. 10. 864135–864135. 4 indexed citations
6.
Kato, Kagayaki, Hiroshi Koyama, Hiroki Takahashi, et al.. (2020). A step-down photophobic response in coral larvae: implications for the light-dependent distribution of the common reef coral, Acropora tenuis. Scientific Reports. 10(1). 17680–17680. 21 indexed citations
7.
Koyama, Hiroshi, Dongbo Shi, & Toshihiko Fujimori. (2019). Biophysics in oviduct: Planar cell polarity, cilia, epithelial fold and tube morphogenesis, egg dynamics. Biophysics and Physicobiology. 16(0). 89–107. 33 indexed citations
8.
Sanui, Masamitsu, et al.. (2017). Interruption of enteral nutrition in the intensive care unit: a single-center survey. Journal of Intensive Care. 5(1). 52–52. 31 indexed citations
9.
Togawa, Daisuke, et al.. (2016). Repeated posterior dislocation of total hip arthroplasty after spinal corrective long fusion with pelvic fixation. European Spine Journal. 26(S1). 100–106. 36 indexed citations
10.
Ohno, Yousuke, Rio Yokota, Hiroshi Koyama, et al.. (2014). Petascale molecular dynamics simulation using the fast multipole method on K computer. Computer Physics Communications. 185(10). 2575–2585. 20 indexed citations
11.
Hanada, Mitsuru, Masaaki Takahashi, Hiroshi Koyama, & Yukihiro Matsuyama. (2014). Assessing the validity of the modified Blumensaat method for radiographic evaluation of patellar height. European Journal of Orthopaedic Surgery & Traumatology. 25(4). 757–762. 5 indexed citations
12.
Koyama, Hiroshi, et al.. (2012). New Radiographic Index for Evaluating Acetabular Version. Clinical Orthopaedics and Related Research. 471(5). 1632–1638. 11 indexed citations
13.
Fujimoto, Masayuki, Hiroshi Koyama, Shinji Kobayashi, et al.. (2006). Resistivity and resistive switching properties of Pr0.7Ca0.3MnO3 thin films. Applied Physics Letters. 89(24). 21 indexed citations
14.
Tsukino, Mitsuhiro, Koichi Nishimura, Akihiko Ikeda, et al.. (1998). Effects of theophylline and ipratropium bromide on exercise performance in patients with stable chronic obstructive pulmonary disease. Thorax. 53(4). 269–273. 36 indexed citations
15.
Kataoka, Makoto, et al.. (1996). Studies on the Lymphocyte Subsets of the Patients with Gastroenterological Cancer by Use of Three Color Flow Cytometry.. The Japanese Journal of Gastroenterological Surgery. 29(7). 1643–1651.
16.
17.
Koyama, Hiroshi, et al.. (1988). Analysis of impurities in semiconductor by IMA (SIMS). 1 indexed citations
18.
Oda, Keiji, et al.. (1984). Comparison among Methods for Evaluating Dose Equivalent in Pulsed and Mixed Radiation Field. Journal of Nuclear Science and Technology. 21(3). 224–232. 1 indexed citations
19.
Koyama, Hiroshi, et al.. (1980). Incorporation of Oxygen into Silicon during Pulsed-Laser Irradiation. Japanese Journal of Applied Physics. 19(7). L375–L375. 34 indexed citations
20.
Matsuda, Michiyuki & Hiroshi Koyama. (1969). [Cytologic diagnosis of the abnormal nipple discharge].. PubMed. 15(12). 1039–46. 1 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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