Kôji Yamada

11.7k total citations · 2 hit papers
427 papers, 9.2k citations indexed

About

Kôji Yamada is a scholar working on Surgery, Nutrition and Dietetics and Molecular Biology. According to data from OpenAlex, Kôji Yamada has authored 427 papers receiving a total of 9.2k indexed citations (citations by other indexed papers that have themselves been cited), including 143 papers in Surgery, 59 papers in Nutrition and Dietetics and 55 papers in Molecular Biology. Recurrent topics in Kôji Yamada's work include Fatty Acid Research and Health (30 papers), Cholesterol and Lipid Metabolism (26 papers) and Pediatric Hepatobiliary Diseases and Treatments (19 papers). Kôji Yamada is often cited by papers focused on Fatty Acid Research and Health (30 papers), Cholesterol and Lipid Metabolism (26 papers) and Pediatric Hepatobiliary Diseases and Treatments (19 papers). Kôji Yamada collaborates with scholars based in Japan, United States and South Korea. Kôji Yamada's co-authors include Hirofumi Tachibana, Hirohisa Tanaka, Michihiro Sugano, Koichiro Asazawa, Satoshi Hoshino, Tsutomu Matsumoto, Hiroyuki Matsumoto, Masao Yamasaki, Tetsuhiko Kobayashi and Daisuke Umeda and has published in prestigious journals such as Science, Journal of the American Chemical Society and Journal of Biological Chemistry.

In The Last Decade

Kôji Yamada

388 papers receiving 8.9k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

<title>Impact of artificial "gummy" fingers on fingerprint systems</title>

2002 492 citations Tsutomu Matsumoto, Kôji Yamada et al. profile →
Anion Conductive Block Poly(arylene ether)s: Synthesis, Properties, and Application in Alkaline Fuel Cells

2011 481 citations Kôji Yamada et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kôji Yamada Japan	51	1.9k	1.7k	1.4k	1.2k	1.2k	427	9.2k
Hye Jung Kim South Korea	65	4.1k 2.2×	4.9k 2.9×	494 0.3×	1.0k 0.8×	766 0.7×	404	18.9k
Dong‐Hyun Kim South Korea	60	1.8k 1.0×	6.0k 3.5×	386 0.3×	604 0.5×	252 0.2×	530	15.1k
Shiguo Chen China	68	635 0.3×	2.9k 1.7×	2.5k 1.7×	297 0.2×	342 0.3×	318	14.2k
Huimin Wang China	56	299 0.2×	4.8k 2.8×	714 0.5×	799 0.7×	641 0.5×	524	12.6k
Hiromi Yoshida Japan	46	502 0.3×	3.6k 2.1×	1.0k 0.7×	808 0.7×	153 0.1×	427	9.9k
Yang Song China	52	1.0k 0.5×	3.6k 2.1×	874 0.6×	367 0.3×	293 0.3×	375	9.7k
Bei Wang China	42	945 0.5×	2.5k 1.5×	520 0.4×	264 0.2×	2.1k 1.8×	272	8.7k
Ki Hyun Kim South Korea	49	831 0.4×	5.4k 3.2×	385 0.3×	440 0.4×	196 0.2×	633	13.4k
Na Qin China	56	1000 0.5×	4.1k 2.4×	494 0.3×	375 0.3×	2.0k 1.7×	465	12.5k
Gi‐Young Kim South Korea	68	474 0.3×	8.5k 5.0×	792 0.5×	662 0.6×	367 0.3×	633	18.2k

Countries citing papers authored by Kôji Yamada

Since Specialization

Citations

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

Fields of papers citing papers by Kôji Yamada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kôji Yamada

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

All Works

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20 of 20 papers shown

Nagata, Kosei, et al.. (2024). Estimated number of spine surgeries and related deaths in Japan from 2014 to 2020. Journal of Orthopaedic Science. 30(1). 32–38. 2 indexed citations

Onishi, Shun, Masakazu Murakami, Go Miyano, et al.. (2024). Current Practice of Laparoscopic Surgery for Choledochal Cyst in Children -A Survey on Opinion and Experience Among IPEG Members. Journal of Pediatric Surgery. 59(12). 161683–161683. 2 indexed citations

Onishi, Shun, Mitsuru Muto, Toshio Harumatsu, et al.. (2022). Intraoperative visualization of urethra using illuminating catheter in laparoscopy‐assisted anorectoplasty for imperforated anus—A novel and safe technique for preventing urethral injury. Asian Journal of Endoscopic Surgery. 15(4). 867–871. 1 indexed citations

Onishi, Shun, Masakazu Murakami, Koshiro Sugita, et al.. (2021). A rare case of accessory liver lobe torsion in a pediatric patient who showed recurrent epigastralgia and who was treated by elective laparoscopic resection. SHILAP Revista de lepidopterología. 7(1). 143–143. 4 indexed citations

Sarkar, Raju, et al.. (2019). Probabilistic Rainfall Thresholds for Landslide Occurrences in Bhutan. International Journal of Recent Technology and Engineering (IJRTE). 8(2S10). 737–742. 2 indexed citations

Yamada, Kôji, Masakazu Murakami, Keisuke Yano, et al.. (2019). Impact and Characteristics of Forceps Manipulation of Three-Dimensional in Laparoscopic Hepaticojejunostomy Mimicking a Disease-Specific Simulator: A Comparison of Expert with Trainee. Journal of Laparoendoscopic & Advanced Surgical Techniques. 29(10). 1378–1382. 7 indexed citations

Nagata, Kosei, Kôji Yamada, Tomohiro Shinozaki, et al.. (2019). Non-inferior comparative study comparing one or two day antimicrobial prophylaxis after clean orthopaedic surgery (NOCOTA study): a study protocol for a cluster pseudo-randomized controlled trial comparing duration of antibiotic prophylaxis. BMC Musculoskeletal Disorders. 20(1). 533–533. 3 indexed citations

Onishi, Shun, Masakazu Murakami, Keisuke Yano, et al.. (2019). A Comparison of the Effectiveness Between Three Different Endoscopic Surgical Skill Training Programs for Medical Students Using the Infant Laparoscopic Fundoplication Simulator: A Randomized Controlled Trial. Journal of Laparoendoscopic & Advanced Surgical Techniques. 29(10). 1252–1258. 7 indexed citations

Onishi, Shun, Motoi Mukai, Takafumi Kawano, et al.. (2017). A comparison of the characteristics and precision of needle driving for right-handed pediatric surgeons between right and left driving using a model of infant laparoscopic diaphragmatic hernia repair. Pediatric Surgery International. 33(10). 1103–1108. 10 indexed citations

10.

Yamada, Kôji, et al.. (2012). Effect of Potential Model on Monte-Carlo Go - Pruning the igo Game Tree Using Potential and Potential Gradient.. Advances in intelligent systems and computing. 767–774. 1 indexed citations

11.

Yamada, Kôji, et al.. (2010). 2P1-G12 Efficiency Improvement of Reinforcemnt Learning Using Parallel Processing for Combination Value Function. The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec). 2010(0). _2P1–G12_1.

12.

Inoue, Yukinori, Kôji Yamada, Shigeo Morimoto, & Masayuki Sanada. (2008). Improvement of Position Estimation Accuracy in IPMSM Sensorless Drives with On-Line Parameter Identification. IEEJ Transactions on Industry Applications. 128(7). 867–873. 2 indexed citations

13.

Yamada, Kôji, et al.. (2008). 2A1-G24 Motion control of a modular robot using neural networks. The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec). 2008(0). _2A1–G24_1.

14.

Yamada, Kôji, et al.. (2005). 2P1-S-065 Studies on Forward Motion of Five Legs Robot(Evolution and Learning for Robotics 5,Mega-Integration in Robotics and Mechatronics to Assist Our Daily Lives). The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec). 2005(0). 220–220. 1 indexed citations

15.

Yamada, Kôji, et al.. (2002). Dietary Effect of .ALPHA.-Tocopherol and Tocotrienols on Lipid Metabolism and Immune Function of Aged Sprague-Dawley Rats.. Food Science and Technology Research. 8(1). 59–63. 5 indexed citations

16.

Matsumoto, Tsutomu, Hiroyuki Matsumoto, Kôji Yamada, & Satoshi Hoshino. (2002). Impact of Artificial "Gummy" Fingers on Fingerprint Systems.. 26. 92 indexed citations

17.

Yamada, Kôji. (2001). Immunoglobulin Production Regulating Activity of Water-soluble Dietary Fibers. 5(1). 1–9. 1 indexed citations

18.

Yamada, Kôji, et al.. (1998). A Design Method of Servo System using High Order Disturbance Observer. IEEJ Transactions on Industry Applications. 118(4). 474–479. 1 indexed citations

19.

Suzuki, Tatsuya, et al.. (1995). Positioning Control of Direct Drive Robot with Two-Degree-of-Freedom Compensator.. IEEJ Transactions on Industry Applications. 115(4). 444–451. 5 indexed citations

20.

Yoshino, Ichiro, Genki Kimura, Tokujiro Yano, et al.. (1993). Characterization of lung squamous cell carcinoma-derived t-cell suppressive factor. Cancer. 72(8). 2347–2357. 11 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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