S Nishiyama

76 total papers · 603 total citations
32 papers, 442 citations indexed

About

S Nishiyama is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Epidemiology. According to data from OpenAlex, S Nishiyama has authored 32 papers receiving a total of 442 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Surgery, 9 papers in Pulmonary and Respiratory Medicine and 9 papers in Epidemiology. Recurrent topics in S Nishiyama's work include Gastric Cancer Management and Outcomes (8 papers), Metastasis and carcinoma case studies (5 papers) and Gastrointestinal Tumor Research and Treatment (4 papers). S Nishiyama is often cited by papers focused on Gastric Cancer Management and Outcomes (8 papers), Metastasis and carcinoma case studies (5 papers) and Gastrointestinal Tumor Research and Treatment (4 papers). S Nishiyama collaborates with scholars based in Japan. S Nishiyama's co-authors include Shinji Tanaka, Kazuaki Chayama, Shiro Oka, Nana Hayashi, Motomi Terasaki, Koichi Nakadoi, Masaharu Yoshihara, Kenjiro Shigita, Naoki Asayama and Yuki Ninomiya and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastrointestinal Endoscopy and Inflammatory Bowel Diseases.

In The Last Decade

S Nishiyama

30 papers receiving 433 citations

Author Peers

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

Author						Papers	Cites
S Nishiyama	322	191	171	124	57	32	442
Shigeto Koizumi	177 0.5×	260 1.4×	109 0.6×	101 0.8×	52 0.9×	36	457
Lucille Quénéhervé	174 0.5×	244 1.3×	150 0.9×	105 0.8×	30 0.5×	46	399
Yoshikazu Hirata	210 0.7×	242 1.3×	70 0.4×	147 1.2×	55 1.0×	44	457
Youichi Miyaoka	96 0.3×	325 1.7×	76 0.4×	85 0.7×	62 1.1×	31	493
Kuniomi Honda	139 0.4×	178 0.9×	134 0.8×	55 0.4×	30 0.5×	22	441
Teppei Kabemura	240 0.7×	240 1.3×	155 0.9×	80 0.6×	26 0.5×	29	476
Balthazar Ej	112 0.3×	329 1.7×	83 0.5×	67 0.5×	56 1.0×	26	430
Hideharu Okanobu	271 0.8×	200 1.0×	138 0.8×	145 1.2×	62 1.1×	35	454
Yoshiaki Maeda	104 0.3×	203 1.1×	72 0.4×	154 1.2×	91 1.6×	41	401
Sun‐Jin Boo	141 0.4×	155 0.8×	90 0.5×	135 1.1×	155 2.7×	39	448

Countries citing papers authored by S Nishiyama

Since Specialization

Citations

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

Fields of papers citing papers by S Nishiyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S Nishiyama

This figure shows the co-authorship network connecting the top 25 collaborators of S Nishiyama. A scholar is included among the top collaborators of S Nishiyama 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 S Nishiyama. S Nishiyama 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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