Hiroshi Koyama

85 papers and 1.7k indexed citations i.

About

Hiroshi Koyama is a scholar working on Electrical and Electronic Engineering, Astronomy and Astrophysics and Materials Chemistry. According to data from OpenAlex, Hiroshi Koyama has authored 85 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Electrical and Electronic Engineering, 18 papers in Astronomy and Astrophysics and 11 papers in Materials Chemistry. Recurrent topics in Hiroshi Koyama’s work include Semiconductor materials and devices (16 papers), Astrophysics and Star Formation Studies (14 papers) and Integrated Circuits and Semiconductor Failure Analysis (12 papers). Hiroshi Koyama is often cited by papers focused on Semiconductor materials and devices (16 papers), Astrophysics and Star Formation Studies (14 papers) and Integrated Circuits and Semiconductor Failure Analysis (12 papers). Hiroshi Koyama collaborates with scholars based in Japan, United States and Germany. Hiroshi Koyama's co-authors include Shu‐ichiro Inutsuka, Eve C. Ostriker, DM Geddes, Tomikichi Wada, Kaoru Yoshida, Satoshi Naito, Kazuhisa Sekimizu, Takahiro Ito, Masahiro Watanabe and Tsuyoshi Inoue and has published in prestigious journals such as Circulation, The Astrophysical Journal and Journal of Applied Physics.

In The Last Decade

Co-authorship network of co-authors of Hiroshi Koyama i

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.

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).

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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