Nomura, Y, Saito, S, Ishiwata, R, and Sugiyama, Y. Hopf bifurcation analysis for a dissipative system with asymmetric interaction: Analytical explanation of a specific property of highway traffic. Physical Review E, American Physical Society, 93(1):012215, January 2016. [ DOI | http ]
 
Ishiwata, R and Sugiyama, Y. Flow instability originating from particle configurations using the two-dimensional optimal velocity model. Physical Review E, 92(6):062830, December 2015. [ DOI | http ]
 
Matsumae, H, Ishiwata, R, Minamoto, T, Ishida, N, Ogishima, S, and Tanaka, H. Detection of periodic patterns in microarray data reveals novel oscillating transcripts of biological rhythms in Ciona intestinalis. Artificial Life and Robotics, Springer Japan, pages 1--6, November 2015. [ DOI | .html ]
 
Ishiwata, R, Kinukawa, R, and Sugiyama, Y. Analysis of motion of two-dimensional Optimal Velocity particles on simple maze using Kantorovich metric. In International Conference on Mathematical Modeling and Applications. Tokyo, January 2015.
 
Ishiwata, R and Iwasa, M. Extracellular and intracellular factors regulating the migration direction of a chemotactic cell in traveling-wave chemotaxis. Physical Biology, IOP Publishing, 12(2):026004, 2015. [ DOI | http ]
 
Ishiwata, R, Kinukawa, R, and Sugiyama, Y. Analysis of motion of two-dimensional Optimal Velocity particles on simple maze using Kantorovich metric (in Japanese). In Symposium on Simulation of Traffic Flow (In Japanese). Nagoya, December 2014. [ .pdf ]
 
Ishiwata, R and Sugiyama, Y. Quantitative Analysis for Quasi-Stable Pattern in the system of Optimal Velocity Model. In Joint Annual Meeting of the Japanese Society for Mathematical Biology and the Society for Mathematical Biology. Osaka, July 2014.
 
Tanabe, M and Ishiwata, R. Swarm Oscillators - scenario of spiral aggregation - (in Japanese). In JPS 69th Annual Meeting (in Japanese). March 2014.
 
Ishiwata, R, Tanabe, M, and Iwasa, M. Swarm Oscillators - non-equilibrium state with large number of particle - (in Japanese). Meeting abstracts of the Physical Society of Japan, 1:352, 2014.
 
Katayama, T, Wilkinson, MD, Micklem, G, Kawashima, S, Yamaguchi, A, Nakao, M, Yamamoto, Y, Okamoto, S, Oouchida, K, Chun, HW, Aerts, J, Afzal, H, Antezana, E, Arakawa, K, Aranda, B, Belleau, F, Bolleman, J, Bonnal, RJ, Chapman, B, Cock, PJ, et al. The 3rd DBCLS BioHackathon: improving life science data integration with Semantic Web technologies. Journal of Biomedical Semantics, 4(1):6, 2013. [ DOI | http ]
 
Ishiwata, R and Sugiyama, Y. Relationships between power-law long-range interactions and fractional mechanics. Physica A: Statistical Mechanics and its Applications, 391(23):5827--5838, December 2012. [ DOI | http ]
 
Iwasa, M and Ishiwata, R. Transition between Aggregation and Dispersion of Chemotactic Cells(in Japanese). In Symposium on Simulation of Traffic Flow (In Japanese). Nagoya, December 2011.
 
Iwasa, M and Ishiwata, R. Phenomenological understanding of aggregation and dispersion of chemotactic cells. arXiv.org, October 2011. [ arXiv | http ]
 
Ishiwata, R and Sugiyama, Y. Analysis of aggregation behavior with 2D OV model. In Symposium on Simulation of Traffic Flow (In Japanese). Nagoya, November 2010.
 
Ishiwata, R and Sugiyama, Y. Instability of Collective Flow in Two-Dimensional Optimal Velocity Model. In Natural Computing, pages 191--198. Springer Japan, Tokyo, 2010. ISBN 978-4-431-53867-7. [ DOI | http ]
 
Ishiwata, R and Sugiyama, Y. Instability of Collective Flow in Two-Dimensional Optimal Velocity Model. Natural Computing, Natural Computing, 2:191--198, 2010. [ http ]
 
Ishiwata, R and Sugiyama, Y. Array dependent instability of homogenous flow with two-dimensional OV model(in Japanese). In Symposium on Simulation of Traffic Flow (In Japanese). Nagoya, December 2009.
 
Matsumae, H, Minamoto, T, Ishiwata, R, Hanai, S, Azumi, K, Ogishima, S, Tanaka, H, and Satoh, N. Microarray analysis of circadian gene expressions in Ciona intestinalis. In The 5th International Tunicate meeting. Okinawa, June 2009.
 
Ishiwata, R, Morioka, MS, Ogishima, S, and Tanaka, H. BioCichlid: central dogma-based 3D visualization system of time-course microarray data on a hierarchical biological network. Bioinformatics (Oxford, England), Oxford University Press, 25(4):543--544, February 2009. [ DOI | http ]
 
Ishiwata, R and Sugiyama, Y. Relationships between models of long range power law interaction and mechanics containing fractional derivative(in Japanese). In Symposium on Simulation of Traffic Flow (In Japanese). Nagoya, November 2008.
 
Morioka, MS, Ishiwata, R, Ogishima, S, Sone, T, Oshiro, S, and Tanaka, H. GSMTA: novel method of gene-set trend analysis for temporal gene expression data. In 4th EMBO Conference From Functional Genomics to Systems Biology EMBL. Heidelberg, November 2008.
 
Morioka, MS, Ishiwata, R, Ogishima, S, Oshiro, S, and Tanaka, H. Temporal gene expression analysis of hypoxia in human muscle cell. In The 8th International conference on system Biology. California, October 2007.
 
Ishiwata, R. Mathematical modeling of emission of inducers of apoptosis. Master's thesis, 2006.