This map shows the geographic impact of Koichiro Sawa'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 Koichiro Sawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichiro Sawa more than expected).
This network shows the impact of papers produced by Koichiro Sawa. 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 Koichiro Sawa. The network helps show where Koichiro Sawa may publish in the future.
Co-authorship network of co-authors of Koichiro Sawa
This figure shows the co-authorship network connecting the top 25 collaborators of Koichiro Sawa.
A scholar is included among the top collaborators of Koichiro Sawa 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 Koichiro Sawa. Koichiro Sawa is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Kubota, Hiroaki, et al.. (2014). Degradation phenomenon of electrical contacts by using a micro-sliding mechanism -- The comparison with input waveforms concerning of minimal sliding amplitudes under some conditions (3). IEICE technical report. Speech. 114(382). 7–12.1 indexed citations
4.
Yoshida, Kiyoshi, et al.. (2011). Arc voltage and current waveforms of DC electromagnetic contactor -- Influence on break arc waveforms of voltage and current. IEICE technical report. Speech. 111(183). 1–6.1 indexed citations
5.
Yoshida, Kiyoshi, et al.. (2011). Electrode Mass Change of AgNi Contacts for Electromagnetic Contactor : Influence of Voltage when only Break Arc is Generated. IEICE Technical Report; IEICE Tech. Rep.. 111(299). 185–188.3 indexed citations
6.
Yoshida, Kiyoshi & Koichiro Sawa. (2009). A study on influence of surrounding atmosphere to gaseous phase transition in break arc. 109(287). 97–100.1 indexed citations
7.
Nagashima, K., Hiroshi Seino, Tomoyuki Suzuki, et al.. (2005). Characteristics of Magnetic Force between a Superconducting Coil and a Bulk Superconductor. 73. 269.1 indexed citations
Ueno, Takahiro, Noboru Morita, & Koichiro Sawa. (2003). Effect of Inert Gas on Surface Film Formation and on Voltage Drop of Sliding Contacts. IEICE Transactions on Electronics. 86(6). 891–896.4 indexed citations
Sawa, Koichiro, et al.. (2001). Relationship Between Contact Form and Operation Characteristics of Medium Duty Electrical Contacts. 101(327). 47–52.2 indexed citations
12.
Ueno, Takahiro & Koichiro Sawa. (2000). An Influence of Atmospheric Humidity and Temperature on Brush Wear of Sliding Contact. IEICE Transactions on Electronics. 83(9). 1395–1401.4 indexed citations
Sawa, Koichiro, et al.. (1994). An Experimental Study on Material Transfer and Arc Erosion Characteristic of Ag Contacts under Switching Lower Current (Special Issue on Recent Electromechanical Devices). IEICE Transactions on Electronics. 77(10). 1655–1661.2 indexed citations
15.
Arai, Keisuke, et al.. (1994). The Influence of Oxygen Concentration on Contact Resistance Behaviours of Ag and Pd Materials in DC Breaking Arcs. IEICE Transactions on Electronics. 77(10). 1647–1654.3 indexed citations
Hasegawa, Makoto, Koichiro Sawa, & Kunio Miyachi. (1989). A Study of the Formation of Palladium-Oxides Caused by Mechanical Switching Actions. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 72(4). 296–298.2 indexed citations
19.
Hasegawa, Makoto, Koichiro Sawa, & Kunio Miyachi. (1988). Analysis of Steady Arc Products on Ag/Pd Contacts. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 276–277.3 indexed citations
20.
Sawa, Koichiro, Makoto Hasegawa, & Kunio Miyachi. (1986). A Study on Contact Characteristics of Ag-Pd Alloy Contacts by using Automatic Data-Acquisition System for Contact Resistance. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 461–463.3 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.