A. Hajime Koyama

77 papers and 2.2k indexed citations i.

About

A. Hajime Koyama is a scholar working on Epidemiology, Genetics and Infectious Diseases. According to data from OpenAlex, A. Hajime Koyama has authored 77 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Epidemiology, 24 papers in Genetics and 24 papers in Infectious Diseases. Recurrent topics in A. Hajime Koyama’s work include Virus-based gene therapy research (22 papers), Herpesvirus Infections and Treatments (21 papers) and HIV Research and Treatment (17 papers). A. Hajime Koyama is often cited by papers focused on Virus-based gene therapy research (22 papers), Herpesvirus Infections and Treatments (21 papers) and HIV Research and Treatment (17 papers). A. Hajime Koyama collaborates with scholars based in Japan, United States and Russia. A. Hajime Koyama's co-authors include Akio Adachi, Hisashi Yamasaki, Tsutomu Arakawa, Hiroshi Irie, Yoshikazu Miwa, Misao Uozaki, Mikako Fujita, Keiko Ikeda, Tomoharu Fukumori and Kazuko Tsujimoto and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Virology and Biochemical and Biophysical Research Communications.

In The Last Decade

Co-authorship network of co-authors of A. Hajime Koyama i

Fields of papers citing papers by A. Hajime Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by A. Hajime Koyama

Since Specialization
Citations

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