Takeo Ojika

906 total citations
37 papers, 646 citations indexed

About

Takeo Ojika is a scholar working on Numerical Analysis, Computational Theory and Mathematics and Computer Vision and Pattern Recognition. According to data from OpenAlex, Takeo Ojika has authored 37 papers receiving a total of 646 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Numerical Analysis, 9 papers in Computational Theory and Mathematics and 7 papers in Computer Vision and Pattern Recognition. Recurrent topics in Takeo Ojika's work include Differential Equations and Numerical Methods (8 papers), Numerical methods for differential equations (7 papers) and Advanced Optimization Algorithms Research (6 papers). Takeo Ojika is often cited by papers focused on Differential Equations and Numerical Methods (8 papers), Numerical methods for differential equations (7 papers) and Advanced Optimization Algorithms Research (6 papers). Takeo Ojika collaborates with scholars based in Japan, Canada and United States. Takeo Ojika's co-authors include Yasuhiko Ishigure, Haruhisa Kawasaki, Satoshi Ito, Yutaka Nishimoto, Satoshi Ueki, Motoyuki Abe, Takaaki Aoki, Tetsuya Mouri, Satoshi Watanabe and Taketomo Mitsui and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, IEEE/ASME Transactions on Mechatronics and Journal of Computational and Applied Mathematics.

In The Last Decade

Takeo Ojika

36 papers receiving 602 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Takeo Ojika Japan 12 190 161 136 131 119 37 646
Eloísa García–Canseco Mexico 13 47 0.2× 24 0.1× 49 0.4× 35 0.3× 17 0.1× 40 893
Georgios Evangelopoulos Greece 15 46 0.2× 15 0.1× 7 0.1× 14 0.1× 475 4.0× 29 741
Andrews Samraj India 11 52 0.3× 31 0.2× 12 0.1× 58 0.4× 69 0.6× 61 367
Nadia Figueroa United States 16 205 1.1× 8 0.0× 6 0.0× 85 0.6× 193 1.6× 49 634
Madhav Rao India 11 123 0.6× 14 0.1× 51 0.4× 25 0.2× 32 0.3× 154 515
Andrea Ricci Italy 4 27 0.1× 5 0.0× 17 0.1× 48 0.4× 188 1.6× 6 400
Teng-Hu Cheng Taiwan 15 216 1.1× 68 0.4× 28 0.2× 2 0.0× 90 0.8× 42 743
Stefan Klanke United Kingdom 12 149 0.8× 8 0.0× 17 0.1× 12 0.1× 84 0.7× 26 451
Hazem Wannous France 14 256 1.3× 101 0.6× 2 0.0× 245 1.9× 511 4.3× 37 808

Countries citing papers authored by Takeo Ojika

Since Specialization
Citations

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

Fields of papers citing papers by Takeo Ojika

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takeo Ojika

This figure shows the co-authorship network connecting the top 25 collaborators of Takeo Ojika. A scholar is included among the top collaborators of Takeo Ojika 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 Takeo Ojika. Takeo Ojika 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.
Ueki, Satoshi, Haruhisa Kawasaki, Satoshi Ito, et al.. (2010). Development of a Hand-Assist Robot With Multi-Degrees-of-Freedom for Rehabilitation Therapy. IEEE/ASME Transactions on Mechatronics. 17(1). 136–146. 196 indexed citations
2.
Ueki, Satoshi, Yutaka Nishimoto, Motoyuki Abe, et al.. (2008). Development of virtual reality exercise of hand motion assist robot for rehabilitation therapy by patient self-motion control. PubMed. 2008. 4282–4285. 30 indexed citations
3.
4.
Ojika, Takeo, et al.. (2000). Virtual Heritage: Breathing new life into our ancient past. IEEE Multimedia. 7(2). 20–21. 39 indexed citations
5.
Ojika, Takeo, et al.. (1997). Towards greater reality in virtual heritage. Modelling the frigate HMS Unicorn. 74–74. 1 indexed citations
6.
Ojika, Takeo. (1987). Modified deflation algorithm for the solution of singular problems. I. A system of nonlinear algebraic equations. Journal of Mathematical Analysis and Applications. 123(1). 199–221. 42 indexed citations
7.
Ojika, Takeo. (1987). Modified deflation algorithm for the solution of singular problems. II. Nonlinear multipoint boundary value problems. Journal of Mathematical Analysis and Applications. 123(1). 222–237. 10 indexed citations
8.
Ojika, Takeo, Satoshi Watanabe, & Taketomo Mitsui. (1983). Deflation algorithm for the multiple roots of a system of nonlinear equations. Journal of Mathematical Analysis and Applications. 96(2). 463–479. 57 indexed citations
9.
Ojika, Takeo. (1983). Structure analyses for large scale nonlinear multipoint boundary value problems. Journal of Mathematical Analysis and Applications. 92(1). 139–162. 2 indexed citations
10.
Watanabe, Satoshi, Takeo Ojika, & Taketomo Mitsui. (1983). On the quadratic convergence properties of the ε-secant method for the solution of a system of nonlinear equations and its application to a chemical reaction problem. Journal of Mathematical Analysis and Applications. 95(1). 69–84. 3 indexed citations
11.
Ojika, Takeo, et al.. (1982). Sequential Substitution Method for the Resultant of a System of Nonlinear Algebraic Equations. 31(1). 63–69. 1 indexed citations
12.
Ojika, Takeo, et al.. (1982). Initial value adjusting method and graph theoretical analysis for the solution of nonlinear multipoint boundary value problems with varying system dimensions. Journal of Mathematical Analysis and Applications. 86(1). 123–136. 2 indexed citations
13.
Ojika, Takeo, et al.. (1981). The scaling method for free interface problems in ordinary differential equations. Journal of Mathematical Analysis and Applications. 79(2). 428–435. 1 indexed citations
14.
Ojika, Takeo, et al.. (1980). Multipoint boundary value problems with discontinuities II. Convergence of the initial value adjusting method. Journal of Computational and Applied Mathematics. 6(3). 183–187. 5 indexed citations
15.
Ojika, Takeo. (1980). On quadratic convergence of the initial value adjusting method for nonlinear multipoint boundary value problems. Journal of Mathematical Analysis and Applications. 73(1). 192–203. 13 indexed citations
16.
Ojika, Takeo, et al.. (1980). Multipoint boundary value problems with discontinuities I. Algorithms and applications. Journal of Computational and Applied Mathematics. 6(2). 133–143. 15 indexed citations
17.
Ojika, Takeo, et al.. (1980). A numerical method for multipoint boundary value problems with application to a restricted three body problem. International Journal of Computer Mathematics. 8(4). 329–344. 7 indexed citations
18.
Ojika, Takeo, et al.. (1980). Initial Value Adjusting Method for the Solution of Nonlinear Multipoint Boundary Value Problems with Increases or Decreases in System Dimensions. Medical Entomology and Zoology. 29(2). 151–162. 1 indexed citations
19.
Ojika, Takeo, et al.. (1979). Initial-value adjusting method for the solution of nonlinear multipoint boundary-value problems. Journal of Mathematical Analysis and Applications. 69(2). 359–371. 26 indexed citations
20.
Nishikawa, Yoshikazu, Nobuo Sannomiya, & Takeo Ojika. (1974). An Algorithm for Interaction Coordination in Multilevel Control of Nonlinear Systems. Transactions of the Society of Instrument and Control Engineers. 10(1). 15–21. 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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