Koichi Hirata

3.5k total citations
149 papers, 2.8k citations indexed

About

Koichi Hirata is a scholar working on Mechanics of Materials, Materials Chemistry and Computational Mechanics. According to data from OpenAlex, Koichi Hirata has authored 149 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 57 papers in Mechanics of Materials, 38 papers in Materials Chemistry and 32 papers in Computational Mechanics. Recurrent topics in Koichi Hirata's work include Muon and positron interactions and applications (50 papers), Ion-surface interactions and analysis (30 papers) and Copper Interconnects and Reliability (16 papers). Koichi Hirata is often cited by papers focused on Muon and positron interactions and applications (50 papers), Ion-surface interactions and analysis (30 papers) and Copper Interconnects and Reliability (16 papers). Koichi Hirata collaborates with scholars based in Japan, China and United States. Koichi Hirata's co-authors include Yoshinori Kobayashi, Kenji Ito, Yoichi Niki, Hidenori Sekiguchi, Yûsuke Ujihira, W. Zheng, K. Sato, Toshiaki Ougizawa, Cailin Wang and Nobuhiro Yuki and has published in prestigious journals such as Physical Review Letters, Journal of Biological Chemistry and The Journal of Chemical Physics.

In The Last Decade

Koichi Hirata

139 papers receiving 2.8k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koichi Hirata Japan	32	834	738	609	364	299	149	2.8k
Wenjie Xia United States	39	1.6k 1.9×	419 0.6×	1.6k 2.7×	489 1.3×	287 1.0×	174	5.0k
Olivier Tillement France	47	3.5k 4.1×	404 0.5×	1.1k 1.8×	940 2.6×	183 0.6×	266	8.5k
Atsushi Takano Japan	40	2.6k 3.2×	158 0.2×	421 0.7×	460 1.3×	308 1.0×	194	5.3k
Richard B. Timmons United States	35	977 1.2×	442 0.6×	238 0.4×	629 1.7×	27 0.1×	111	3.4k
Małgorzata Lekka Poland	32	515 0.6×	207 0.3×	1.3k 2.2×	220 0.6×	128 0.4×	160	4.9k
Tomohiro Ohta Japan	30	571 0.7×	413 0.6×	594 1.0×	676 1.9×	117 0.4×	132	3.4k
Xiaoyong Wang China	30	1.7k 2.1×	125 0.2×	869 1.4×	336 0.9×	74 0.2×	101	4.5k
Olivier Schueller United States	20	555 0.7×	120 0.2×	834 1.4×	2.6k 7.2×	95 0.3×	47	8.4k
Qiang Wang China	32	1.6k 2.0×	76 0.1×	519 0.9×	513 1.4×	67 0.2×	175	3.8k
Stéphane Lucas Belgium	33	1.6k 1.9×	478 0.6×	472 0.8×	653 1.8×	295 1.0×	204	3.8k

Countries citing papers authored by Koichi Hirata

Since Specialization

Citations

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

Fields of papers citing papers by Koichi Hirata

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Hirata

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Hirata, Koichi, et al.. (2020). Experimental characterization of ultrafast phenomena of secondary-ion emission induced by nanoscale energy deposition processes of energetic C60 impacts. Journal of Applied Physics. 127(21). 1 indexed citations

Niki, Yoichi, et al.. (2018). Effects of the Combustion Characteristics of Diesel Engine by the Intake of Exhaust Gas from Gas Engine. Marine Engineering. 53(3). 392–397. 4 indexed citations

Niki, Yoichi, et al.. (2018). Emission and Combustion Characteristics of Diesel Engine Fumigated With Ammonia. 45 indexed citations

Hirata, Koichi, et al.. (2017). Effect of Gas Compositions on Combustion and Emission Characteristics of Lean Burn Gas Engine. Marine Engineering. 52(2). 230–237. 1 indexed citations

Hirata, Koichi. (2016). Stirling Engines as Electric Power Generators from Waste Heat. The Journal of the Institute of Electrical Engineers of Japan. 136(9). 592–595.

Niki, Yoichi, et al.. (2012). COMPARISON OF THE NOx REDUCTION PERFORMANCE OF SCR INSTALLED ON DIESEL ENGINE AND THE ESTIMATED PERFORMANCE FROM CATALYST TEST USING MICRO-REACTORS. 47(3). 403–408.

Park, Jae‐Hyun, Toshihiko Nishidate, Kyoko Kijima, et al.. (2010). Critical Roles of Mucin 1 Glycosylation by Transactivated Polypeptide N -Acetylgalactosaminyltransferase 6 in Mammary Carcinogenesis. Cancer Research. 70(7). 2759–2769. 152 indexed citations

Okuya, Koichi, Yasuaki Tamura, Keita Saito, et al.. (2010). Spatiotemporal Regulation of Heat Shock Protein 90-Chaperoned Self-DNA and CpG-Oligodeoxynucleotide for Type I IFN Induction via Targeting to Static Early Endosome. The Journal of Immunology. 184(12). 7092–7099. 33 indexed citations

Kutomi, Goro, Yasuaki Tamura, Koichi Okuya, et al.. (2009). Targeting to Static Endosome Is Required for Efficient Cross-Presentation of Endoplasmic Reticulum-Resident Oxygen-Regulated Protein 150-Peptide Complexes. The Journal of Immunology. 183(9). 5861–5869. 22 indexed citations

10.

Maeda, Hideki, Hiroeki Sahara, Yoko Mori, et al.. (2007). Biological Heterogeneity of the Peptide-binding Motif of the 70-kDa Heat Shock Protein by Surface Plasmon Resonance Analysis. Journal of Biological Chemistry. 282(37). 26956–26962. 19 indexed citations

11.

Hirata, Koichi. (2003). Geographic Information Systems 1. Introduction. National Remote Sensing Bulletin. 23(1). 50–53. 36 indexed citations

12.

Kobayashi, Yoshinori, Kenji Ito, Koichi Hirata, et al.. (2003). Improved Radiation Resistance of Polypropylene by Sputtered Silica Coating. RADIOISOTOPES. 52(9). 449–455. 2 indexed citations

13.

Muramatsu, Makoto, Keiichi Kuboyama, Toshiaki Ougizawa, et al.. (2003). Oxygen permeability and free volume hole size in ethylene–vinyl alcohol copolymer film: temperature and humidity dependence. Radiation Physics and Chemistry. 68(3-4). 561–564. 94 indexed citations

14.

Kobayashi, Yuka, Masayuki Miyamoto, Tomoyuki Miyamoto, et al.. (2002). [Nacrolepsy manifesting initially as cataplexy and sleep paralysis: usefulness of CSF hypocretin-1 examination for early diagnosis].. PubMed. 42(3). 233–6.

15.

Ito, Kenji, Yoshinori Kobayashi, Weitao Zheng, Tian Chang, & Koichi Hirata. (2002). Positron Annihilation Process in Mesoporous Silicon Oxide Thin Films.. RADIOISOTOPES. 51(2). 53–59. 3 indexed citations

16.

Isshiki, Nobuhiko, et al.. (2002). Regenerative rotary displacer Stirling engine. 2. 1249–1254. 2 indexed citations

17.

Wang, Cailin, Yoshinori Kobayashi, Koichi Hirata, et al.. (2001). Nanometer-scale voids in PECVD silicon-oxide films probed by variable-energy positron lifetime spectroscopy:. Radiation Physics and Chemistry. 60(4-5). 545–549. 6 indexed citations

18.

Kihara, Chikashi, Yoichi Furukawa, Hideaki Yamana, et al.. (2000). Mutations in Zinc‐binding Domains of p53 as a Prognostic Marker of Esophageal‐cancer Patients. Japanese Journal of Cancer Research. 91(2). 190–198. 31 indexed citations

19.

Hirata, Koichi, et al.. (2000). Performance of a 50 W Class Small Stirling Engine : 2nd Report, Experiments of a Hermetic Generator Set. 2000.4(0). 23–26. 1 indexed citations

20.

Okazaki, Atsushi, M. Okazaki, Hiroaki Satoh, et al.. (1991). Fiberoptic Ductoscopy of the Breast: A New Diagnostic Procedure for Nipple Discharge. Japanese Journal of Clinical Oncology. 21(3). 188–93. 76 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.

Explore authors with similar magnitude of impact