Design Engineering Laboratory

T. Sugimoto

Takeshi Sugimoto

Office: 23-531 Ext.: 3778


03/1990, Ph.D. in Aeronautics and Astronautics, The University of Tokyo

03/1987, M.A., The University of Tokyo

S. Yamaguchi

Sachi Yamaguchi
(Assistant Professor)

Laboratory: 23-530 Ext.: 3777


09/2009, Ph.D., Nara Women’s University

03/2007, M.S., Nara Women’s University

Research Field

T. Sugimoto: Applied Mathematics and Theoretical Physics, Philosophy of Science.
S. Yamaguchi: Mathematical Biology

Research Overview

Study of mathematical biology, mathematical environmentics, and mathematical sociology.

Research Subjects

  • 1. Mathematical physics of form and function.
  • 2.Dynamics of nonlinear systems.
  • 3.Mathematics of ecology.
  • 4.Creativity literacy.
  • 5.History of science.


Design is “to create a new form to solve problems in the course of society developments.” Creativity is “to produce a new value by connecting unrelated concepts.” Feasibility means “to be scientific, manufacturable, and fulfilling design constraints.” To design beautiful, beneficial products, designers should have an overall decision-making philosophy, a vision for a product to make people happy, and concepts to specify the product.


    T. Sugimoto:

  • 1) T. Sugimoto, “Newton’s Principia Revisited: A New Passage of the Solution to the Direct Kepler Problem,” Proc. Acad. Mech. Japan, vol. 1, pp. 17-27 (2015).
  • 2) T. Sugimoto, “The historic Japanese visitors to St Helena,” Wirebird, No. 43, pp.21–33 (2014).
  • 3) T. Sugimoto, “Discourse on the latus rectum in conics,” Symmetry, vol. 24(1-4), pp. 295–309 (2013).
  • 4) T. Sugimoto, “A theory for ciliary gliding in freshwater planarians,” J. Aero Aqua Bio-mech., vol. 1, No. 1, pp. 57–63 (2010).
  • 5)T. Sugimoto, “How to present the heart of Newton’s Principia: a primer on the conic sections without Apollonius of Perga,” Symmetry, vol. 20(1–4), pp.113–144 (2009)
  • 6) T. Sugimoto, “Bifurcation and hysteresis phenomena in two-dimensional sail-sail-flow interactions,” Physics of Fluids, vol. 19(12), pp. 122102-1–13 (2007).
  • 7) T. Sugimoto, “Design to learn science and art symmetrically,” Symmetry, vol. 16(1–2), pp. 33–40 (2006).

    S. Yamaguchi:

  • 1) K. Sawada, R. Yoshida, K. Yasuda, S. Yamaguchi, and Y. Yusa. “Dwarf males in an epizoic barnacle Octolasmis unguisiformis and their implication for sexual system evolution.” Invertebrate Biology, vol. 134. pp. 162-167 (2015).
  • 2) S. Yamaguchi, and Y. Iwasa. “Phenotype adjustment promotes adaptive evolution in a game without conflict.” Theoretical Population Biology, vol. 102, pp. 16-25 (2015).
  • 3) S. Yamaguchi, S. Yoshida, A. Kaneko, K. Sawada, K. Yasuda, and Y. Yusa, “Sexual system of a symbiotic pedunculate barnacle Poecilasma kaempferi (Cirripedia: Thoracica),” Marine Biology Research, vol. 10(6), pp. 635–640 (2014).
  • 4) S. Yamaguchi, J.T. Høeg, and Y. Iwasa, “Evolution of sex determination and sexually dimorphic larval sizes in parasitic barnacles,” Journal of Theoretical Biology, vol. 347, pp. 7–16 (2014).
  • 5) S. Yamaguchi, T. Higashiji, K. Sawada, and S. Yamato, “The rediscovery of a rare pedunculate cirripede Paralepas maculata (Cirripedia: Heteralepadidae) on a sea urchin Prionocidaris sp. in Okinawa, southern Japan,” Marine Biodiversity Records, vol. 7, pp. 1–5 (2014).
  • 6) S. Yamaguchi, K. Sawada, Y. Yusa, and Y. Iwasa, “Dwarf males and hermaphrodites can coexist in marine sedentary species if the opportunity to become a dwarf male is limited,” Journal of Theoretical Biology, vol. 334, pp. 101–108 (2013).
  • 7) Y. Yusa, M. Takemura, K. Sawada, and S. Yamaguchi, “Diverse, continuous, and plastic sexual systems in barnacles,” Integrative and Comparative Biology, vol. 53(4), pp. 701–712 (2013).
Affiliated Academic Organizations

T. Sugimoto:
Society for Industrial and Applied Mathematics, American Institute of Aeronautics and Astronautics, Euromech, The Society for Mathematical Biology, Ornithological Society of New Zealand, Society for Science on Form, History of Science Society of Japan

S. Yamaguchi:
Japanese Society for Mathematical Biology, The Ecological Society of Japan, Japan Ethological Society

Current members
◯ Professors: 1 ◯ Assistant Professors: 1
◯ Postgraduates: 1 ◯ Undergraduates: 10

Facilities: Reflection telescope, wind tunnel, 3D printer, 3D scanner, computers.