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.
Elastic‐wave velocity in marine sediments with gas hydrates: Effective medium modeling
This map shows the geographic impact of Akio Sakai'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 Akio Sakai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Akio Sakai more than expected).
This network shows the impact of papers produced by Akio Sakai. 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 Akio Sakai. The network helps show where Akio Sakai may publish in the future.
Co-authorship network of co-authors of Akio Sakai
This figure shows the co-authorship network connecting the top 25 collaborators of Akio Sakai.
A scholar is included among the top collaborators of Akio Sakai 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 Akio Sakai. Akio Sakai is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Otsuka, Kotaro, et al.. (2014). [After the Great East Japan Earthquake : suicide prevention and a gatekeeper program].. PubMed. 116(3). 196–202.2 indexed citations
4.
Kashimura, Osamu & Akio Sakai. (2012). Exercise Training Promotes Release of Endothelium-Derived Nitric Oxide During Pulmonary Vasoconstriction and Increases in Flow Rate. 11(4). 125–131.
Sakai, Akio. (2005). Monitoring of the geologic sequestration of carbon dioxide by 4D seismic survey. 112. 94–97.1 indexed citations
10.
Sakai, Akio. (2002). Velocity estimates by the nonlinear elastic wavefield inversion method. 107. 47–50.2 indexed citations
11.
Nagashima, Yoshinao, Yukihiro Yada, Toshiyuki Suzuki, & Akio Sakai. (2002). Comparison of the Skin Blood Flow under Cooling Loads at Various Body Sites Using an Integration-type Skin Blood Laser Doppler Flowmeter with a Temperature Loading Instrument(ILD-T). 32(2). 109–118.1 indexed citations
12.
Nagashima, Yoshinao, Yukihiro Yada, Toshiyuki Suzuki, & Akio Sakai. (2001). Development and Clinical Application of an Integration Type Laser Doppler Flowmeter Equipped with Temperature Load Instrument for Skin Blood Flow. 31(6). 305–314.1 indexed citations
13.
Kosaka, Mitsuo, et al.. (1998). ThermobiologicalCharacteristics of Pikas, Rabbits and Rats. Nagasaki University's Academic Output SITE (Nagasaki University). 40(3). 157–163.1 indexed citations
14.
Yabuki, H., Akio Sakai, R. B. Kayastha, et al.. (1996). Establishment of the GEN Automatic Weather Station(AWS)in Khumbu region, Nepal Himalayas. 14(14). 13–22.5 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.