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Researcher · Tohoku University · Japan

Hiroki Nishiyama

Hiroki Nishiyama publishes mostly in Computer Networks and Communications, Electrical and Electronic Engineering and Aerospace Engineering, on topics such as Opportunistic and Delay-Tolerant Networks, Mobile Ad Hoc Networks and Cooperative Communication and Network Coding.

ORCID 0000-0002-7374-2772 OpenAlex
World rank
#483,009
of 7,710,434 ranked researchers
Rank in Japan
#4,892
of 383,136
Works
324
Citations
6.7k
Citations per work
20.6
h-index
41
i10-index 109Top 2% in Computer Networks and Communications
Hiroki Nishiyama

What does Hiroki Nishiyama research?

Hiroki Nishiyama's work is mostly in Computer Science (53%), Engineering (28%), Medicine (4%).

Physical Sciences: 264 works · 81.4% of their workComputer Science: 173 works · 53.4% of their workComputer Networks and Communications: 167 works · 51.4% of their workInformation Systems: 6 works · 2.0% of their workEngineering: 91 works · 28.0% of their workElectrical and Electronic Engineering: 56 works · 17.2% of their workAerospace Engineering: 35 works · 10.8% of their workEverything else: 47 works · 14.4% of their workHealth Sciences: 14 works · 4.2% of their workMedicine: 14 works · 4.2% of their workRadiology, Nuclear Medicine and Imaging: 9 works · 2.7% of their workPulmonary and Respiratory Medicine: 5 works · 1.5% of their workTHEIR WORKHiroki Nishiyama324works
Physical Sciences81%Health Sciences4%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Computer Science17353.4%
    2. Engineering9128.0%
  2. Everything else4714.4%
    1. Medicine144.2%
  1. 1Computer Networks and Communications51% of their works
  2. 2Electrical and Electronic Engineering17% of their works
  3. 3Aerospace Engineering11% of their works
  4. 4Radiology, Nuclear Medicine and Imaging3% of their works
  5. 5Information Systems2% of their works
  6. 6Pulmonary and Respiratory Medicine2% of their works

Research topics

Which keywords describe Hiroki Nishiyama's research?

The keywords of their largest research topics: Mobile Ad Hoc Networks, Mobility Models, Channel Assignment, Delay-Tolerant Networks, Opportunistic Routing, Ad Hoc Networks, Wireless Mesh Networks and Wireless Networks.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.

All 20 words, with their numbers
  1. Mobile Ad Hoc Networks1972 topics
  2. Mobility Models1972 topics
  3. Channel Assignment1302 topics
  4. Delay-Tolerant Networks991 topic
  5. Opportunistic Routing991 topic
  6. Ad Hoc Networks981 topic
  7. Wireless Mesh Networks981 topic
  8. Wireless Networks902 topics
  9. Cooperative Diversity601 topic
  10. Network Coding601 topic
  11. LEO Satellite Constellation511 topic
  12. Satellite Communications511 topic
  13. IEEE 802.11321 topic
  14. MAC Protocol321 topic
  15. Caching301 topic
  16. Information-Centric Networking301 topic
  17. Cellular Networks281 topic
  18. Massive MIMO281 topic
  19. UAV Networks231 topic
  20. Wireless Communications231 topic

Where does Hiroki Nishiyama work?

Hiroki Nishiyama's main affiliation in the publication record is Tohoku University, Japan.

How many publications and citations does Hiroki Nishiyama have?

OpenAlex counts 324 works and 6,675 citations for Hiroki Nishiyama, an h-index of 41, ranking #483,009 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Other researchers named Hiroki Nishiyama

Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.

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