Sinan Gurel

PUBLIC R&D PROJECT PORTFOLIO SELECTION UNDER EXPENDITURE UNCERTAINTY AND POLICY CONSTRAINTS

  • Musa Caglar
  • Sinan Gurel
    • Categories Applications - OR and Management Sciences Tags , , , ,

    We consider a project portfolio selection problem faced by research councils in project and call-based R&D grant programs. In such programs, typically, each applicant project receives a score value during specially-designed peer review processes. Each project also has a certain budget, estimated by its principle investigator. The problem is to select an optimal (maximum total … Read more

    A strong conic quadratic reformulation for machine-job assignment with controllable processing times

  • M. Selim Akturk
  • Alper Atamturk
  • Sinan Gurel
    • Categories (Mixed) Integer Nonlinear Programming, Second-Order Cone Programming

    We describe a polynomial-size conic quadratic reformulation for a machine-job assignment problem with separable convex cost. Because the conic strengthening is based on only the objective of the problem, it can also be applied to other problems with similar cost functions. Computational results demonstrate the effectiveness of the conic reformulation. Citation Appeared in Operations Research … Read more