Ruan, Ning (Dr) - Research

Current research projects/students

  • Global optimisation and computational science
  • Applied mathematics and complex systems
  • Operations research and industrial systems engineering
  • Liner shipping network design, logistics and supply Chain

Consulting and other activities

Logistics and scheduling optimisation


  1. Gao, D.Y., Ruan, N. and Xing, W. X. (2015), Advances in Global Optimization, Springer, New York.
  2. Ruan, N. and Gao, D.Y. (2015), Global solutions to fractional programming problem with ratio of nonconvex functions. Applied Mathematics and Computation. 255, 66-72.
  3. Ruan, N. and Gao, D.Y. (2014), Global optimal solutions to sensor network localization problem. Performance Evaluation. 75-76, 1-16.
  4. Ruan, N., and Gao, D. Y. (2014), Canonical duality approach for nonlinear dynamical systems. IMA Journal of Applied Mathematics, 79(2), 313-325.
  5. Ruan, N., Chen, Y. and Gao, D.Y. (2013), An efficient classification using support vector machines. Proceedings of 2013 Science and Information conference, The Science and Information Organization, 585-589,ISBN: 978-0-9893193-0-0.
  6. Gao, D.Y., Ruan, N. and Pardalos, P.M. (2012), Canonical dual solutions to sum of fourth-order polynomials minimization problems with applications to sensor network localization. Boginski, V. L., Commander, C.W., Pardalos, P.M. and Ye, Y. Y. (Eds.), Sensors: Theory, Algorithms, and Applications. Springer, 61, 37-54, ISBN: 978-0-387-88618-3.
  7. Ruan, N., Gao, D.Y., and Jiao, Y. (2010), Canonical dual least square method for solving general nonlinear systems of quadratic equations, Computational Optimization and Applications, 47(2), 335-347.
  8. Gao, D.Y. and Ruan, N. (2010), Solutions to quadratic minimization problems with box and integer constraints, Journal of Global Optimization, 47(3): 463-484.
  9. Gao, D.Y., Ruan, N. and Sherali, H. D. (2010), Canonical dual solutions to fixed cost quadratic programs, Optimization and Optimal Control: Theory and Applications, Chinchuluun, A., Pardalos, P.M., Enkhbat, R. and Tseveendorj, L. (Eds.), Springer, 39, 139-156, ISBN: 978-0-387-89495-9.
  10. Gao, D.Y., Ruan, N. and Sherali, H. D. (2009), Solutions and optimality criteria for nonconvex constrained global optimization problems with connections between canonical and Lagrangian duality, Journal of Global Optimization, 45(3): 473-497.
  11. Gao, D.Y. and Ruan, N. (2008), Complete solutions and optimality criteria for nonconvex quadratic-exponential minimization problem, Mathematical Methods of Operations Research, 67(3): 479-491.

Professional memberships and associations

  • Australian Mathematical Society (AustMS)
  • The Institute of Electrical and Electronics Engineers (IEEE)
  • American Mathematical Society (AMS)
  • Society for Industrial and Applied Mathematics (SIAM)

Research interests

  • Non-convex optimisation
  • (Mixed) integer programming
  • Canonical primal-dual algorithm
  • Nonlinear dynamical systems
  • Data mining
  • Sensor network localisation
  • Supply chain optimisation