Ayaka Shimizu

472 total citations
43 papers, 249 citations indexed

About

Ayaka Shimizu is a scholar working on Geometry and Topology, Discrete Mathematics and Combinatorics and Mathematical Physics. According to data from OpenAlex, Ayaka Shimizu has authored 43 papers receiving a total of 249 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Geometry and Topology, 12 papers in Discrete Mathematics and Combinatorics and 7 papers in Mathematical Physics. Recurrent topics in Ayaka Shimizu's work include Geometric and Algebraic Topology (14 papers), Advanced Combinatorial Mathematics (12 papers) and Homotopy and Cohomology in Algebraic Topology (6 papers). Ayaka Shimizu is often cited by papers focused on Geometric and Algebraic Topology (14 papers), Advanced Combinatorial Mathematics (12 papers) and Homotopy and Cohomology in Algebraic Topology (6 papers). Ayaka Shimizu collaborates with scholars based in Japan, United States and Canada. Ayaka Shimizu's co-authors include Hiromi Sato, Wun Chey Sin, Koichi Ueno, Akihiro Hisaka, Yoshio Satō, Noboru Ιτο, Yasutaka Shigemura, Hiroshi Ishizaka, Koki Takagaki and Go Okada and has published in prestigious journals such as Scientific Reports, Food Chemistry and International Journal of Molecular Sciences.

In The Last Decade

Ayaka Shimizu

32 papers receiving 245 citations

Peers

Ayaka Shimizu
Jean Cougnard France
Cailong Chen China
Jiangbin Chen China
Elaine Zhong United States
Daming Liu China
Michael J. Lafferty United States
Junghyo Jo United States
Daniel Weber Germany
Erik R. Hauge Norway
Yanmei Lu China
Jean Cougnard France
Ayaka Shimizu
Citations per year, relative to Ayaka Shimizu Ayaka Shimizu (= 1×) peers Jean Cougnard

Countries citing papers authored by Ayaka Shimizu

Since Specialization
Citations

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

Fields of papers citing papers by Ayaka Shimizu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ayaka Shimizu

This figure shows the co-authorship network connecting the top 25 collaborators of Ayaka Shimizu. A scholar is included among the top collaborators of Ayaka Shimizu 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 Ayaka Shimizu. Ayaka Shimizu 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.
Otaka, Yohei, Daisuke Ito, Ayaka Shimizu, et al.. (2024). Efficacy of Cognitive Stimulation Therapy for Cognition in Patients with Vascular Cognitive Impairment: A Pilot Randomized Controlled Trial. The Keio Journal of Medicine. 73(4). 39–46.
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Seto, Makiko, Takafumi Sangai, Hiroshi Nishimiya, et al.. (2023). The effectiveness of pretreatment video-based psychoeducation for patients with breast cancer. Palliative & Supportive Care. 21(6). 1016–1023.
4.
Sato, Yosuke, Go Okada, Satoshi Yokoyama, et al.. (2023). Resting-state functional connectivity disruption between the left and right pallidum as a biomarker for subthreshold depression. Scientific Reports. 13(1). 6349–6349. 9 indexed citations
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Yokoyama, Satoshi, Masahiro Takamura, Koki Takagaki, et al.. (2022). Decreased physical activity with subjective pleasure is associated with avoidance behaviors. Scientific Reports. 12(1). 2832–2832. 12 indexed citations
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Sato, Hiromi, et al.. (2021). Metabolome Shift in Both Metastatic Breast Cancer Cells and Astrocytes Which May Contribute to the Tumor Microenvironment. International Journal of Molecular Sciences. 22(14). 7430–7430. 3 indexed citations
9.
Shimizu, Ayaka. (2020). Prime alternating knots of minimal warping degree two. Journal of Knot Theory and Its Ramifications. 29(8). 2050060–2050060. 1 indexed citations
10.
Shimizu, Ayaka, et al.. (2020). Severe Gastroparesis After Ablation for Atrial Fibrillation. Cureus. 12(6). e8610–e8610.
11.
Nelson, Sam, et al.. (2019). Biquandle virtual brackets. Journal of Knot Theory and Its Ramifications. 28(11). 1940003–1940003. 1 indexed citations
12.
Sato, Hiromi, et al.. (2017). Connexin 43 enhances Bax activation via JNK activation in sunitinib-induced apoptosis in mesothelioma cells. Journal of Pharmacological Sciences. 134(2). 101–107. 23 indexed citations
13.
Shimizu, Ayaka, et al.. (2017). Up–down colorings of virtual-link diagrams and the necessity of Reidemeister moves of type II. Journal of Knot Theory and Its Ramifications. 26(12). 1750073–1750073.
14.
Shimizu, Ayaka, et al.. (2016). Defective splicing of the background K+ channel K2P5.1 by the pre-mRNA splicing inhibitor, pladienolide B in lectin-activated mouse splenic CD4+ T cells. Journal of Pharmacological Sciences. 132(3). 205–209. 4 indexed citations
15.
Shimizu, Ayaka. (2015). The reductivity of spherical curves. Topology and its Applications. 196. 860–867. 3 indexed citations
16.
Shimizu, Ayaka. (2014). Region crossing change is an unknotting operation. Journal of the Mathematical Society of Japan. 66(3). 15 indexed citations
17.
Shimizu, Ayaka. (2011). The warping degree of a link diagram. Osaka Journal of Mathematics. 48(1). 209–231. 6 indexed citations
18.
Shimizu, Ayaka. (2011). The complete splitting number of a lassoed link. Topology and its Applications. 159(4). 959–965. 6 indexed citations
19.
Ishizaka, Hiroshi, et al.. (2011). Development of a fine thermocouple-needle system for real-time feedback of thermal tumour ablation margin. British Journal of Radiology. 84(1008). 1139–1141. 5 indexed citations
20.
Ishizaka, Hiroshi, et al.. (2010). CT-guided radiofrequency liver tumour ablation: use of a two-step coaxial system with a fine guide needle wire unit for high-risk cases. British Journal of Radiology. 83(996). 1077–1079. 1 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.

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