This map shows the geographic impact of Nishikawa'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 Nishikawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Nishikawa more than expected).
This network shows the impact of papers produced by Nishikawa. 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 Nishikawa. The network helps show where Nishikawa may publish in the future.
Co-authorship network of co-authors of Nishikawa
This figure shows the co-authorship network connecting the top 25 collaborators of Nishikawa.
A scholar is included among the top collaborators of Nishikawa 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 Nishikawa. Nishikawa is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Nishikawa, et al.. (2013). Changes in Soil Physicochemical Properties Following Land Use Change from Paddy Fields to Greenhouse and Upland Fields in the Southeastern Basin of Dianchi Lake, Yunnan Province, China. 土壤圈：英文版. 169–176.11 indexed citations
Nishikawa, et al.. (2011). Contactless Face Interface that Detects Users’ Facial Movements by Multiallocated Reflective Photo Sensor.. 43–44.2 indexed citations
5.
Nishikawa, et al.. (2011). Estimation of the neural circuit for the command generation in the premotor center of an insect brain. 891–894.
6.
Okada, Nishikawa, & Sato. (2010). DoS attack countermeasures in NGN using private security policy. 1–6.
7.
Nishikawa, et al.. (2008). PIV Measurements of Flows around the Wind Turbines with a Flanged-Diffuser Shroud. 热科学学报：英文版. 17(4). 375–380.12 indexed citations
8.
Seki, et al.. (2004). High efficiency multi-layer parasitic microstrip array antenna on TEFLON substrate. European Microwave Conference. 2. 829–832.7 indexed citations
9.
Ono, Ono, et al.. (2004). An analysis of cylindrical coplanar waveguides with finite metallization thickness by extended spectral domain approach. European Microwave Conference. 2. 589–592.1 indexed citations
10.
Nishikawa & Kato. (2003). Demonstrative research on grid-interconnection of clustered photovoltaic power generation systems. 3rd World Conference onPhotovoltaic Energy Conversion, 2003. Proceedings of. 3. 2652–2654.
Nishikawa, et al.. (1998). Intérêt diagnostique et thérapeutique de la mucosectomie par aspiration endoscopique dans le traitement du cancer gastrique épithélial. Acta Endoscopica.
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.